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1
Krohn, Christine E., and Marvin L. Johnson. "HFVS™: Enhanced data quality through technology integration." GEOPHYSICS 71, no. 2 (2006): E13—E23. http://dx.doi.org/10.1190/1.2187730.
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Known problems with vibroseis data include difficult-to-pick and inaccurate first-arrival times, poor well ties, correlation side lobes, harmonic ghosts, and coupling differences. Also, to reduce acquisition costs, various methods are used to record and then separate data from different source locations using vibrators sweeping simultaneously, but these methods suffer from poor data separation and harmonic contamination. A novel combination of heritage Mobil High Fidelity Vibratory Seismic (HFVS) and heritage Exxon vibrator technologies solves these problems with vibroseis data. The method involves vibrator separation combined with vibrator signature deconvolution in such a manner that the output is minimum phase and matches impulsive data. Vibrator signatures are calculated from the vibrator accelerometer measurements. The signatures from multiple vibrators and multiple sweeps are used to design a filter that optimally separates the data from each vibrator and replaces the signatures with a specially designed impulse response. Specific procedures are included to reduce the effects of inversion noise, which can distort the phase. HFVS recording can be used to increase production rates and reduce acquisition costs or to increase spatial sampling and improve data quality. Data recorded from multiple vibrators sweeping simultaneously can be separated by at least 60 dB. After separation, the data from each vibrator can be processed as unique source points. Compared with traditional vibrator arrays, individually processing each source point can result in better data quality by reducing intra-array effects and improving the mitigation of ground-roll noise.
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Gosselin, Philippe, Jonas Truong, and Alexis Lussier Desbiens. "Comparative Study of Ski Damping Technologies by Accelerance Maps." Proceedings 49, no. 1 (2020): 49. http://dx.doi.org/10.3390/proceedings2020049049.
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The vibratory response of alpine skis plays a significant role in the overall skier’s experience. This response is more important than ever as skiers now demand light and approachable (i.e., soft) skis. To improve the vibratory response, many companies now offer technologies to damp the ski’s motion. Even if widely used, these technologies are still widely misunderstood. This paper presents a method based on accelerance maps to evaluate the vibratory response (i.e., bending and torsional modes up to 250 Hz) and the damping at all points on the ski forebody. A variety of commercial technologies are evaluated (i.e., tuned-mass damper, particle damper, constrained-layer and rod activated viscoelastic bushing) and compared to the more traditional effects brought by adjusting mass, bending/torsional stiffnesses and construction.
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M.T., Ismailov, and Mehdiyev E. M. "Basic Principles of Vibrational Maceration Technology and Its Scientific and Technological Impact on Wine Quality." International Journal of Research and Innovation in Applied Science X, no. V (2025): 1142–50. https://doi.org/10.51584/ijrias.2025.1005000101.
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This article examines the scientific basis, technological parameters and effects of the vibratory maceration process, one of the modern winemaking technologies, on the phenolic, aromatic and sensory characteristics of wine. The fact that the vibratory method is more efficient and environmentally friendly compared to traditional maceration methods has expanded its scope of application. This method provides remarkable results, especially in the extraction of phenolic components - anthocyanins, tannins and flavonoids.
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Korendiy, Vitaliy, Oleksandr Kachur, Viktor Zakharov, et al. "Experimental testing of roughness parameters during vibratory lapping of flat surfaces." Vibroengineering Procedia 57 (December 12, 2024): 16–24. https://doi.org/10.21595/vp.2024.24562.
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The basic design parameters and operational conditions of an enhanced vibratory lapping machine are considered. The main purpose of the research is to define the influence of different machining regimes on the roughness parameters of flat surfaces of parts made of C22 steel. The experiments are carried out at different controllable conditions of the vibratory lapping process: amplitudes of vibrations of the upper lap, forced frequencies, machining durations, and lapping paste types. The obtained results are shown in the form of bar charts describing the dependencies of the surface roughness on the machining conditions mentioned above. The major scientific novelty consists in the further development of the technologies of lapping and polishing of flat surfaces using vibratory machines with an electromagnetic drive. The presented research can be used by engineers and technologists while improving existent designs of vibratory lapping-polishing machines, as well as enhancing the corresponding machining processes.
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Yuan, Haobo, Ke Xing, and Hung-Yao Hsu. "Trinity of Three-Dimensional (3D) Scaffold, Vibration, and 3D Printing on Cell Culture Application: A Systematic Review and Indicating Future Direction." Bioengineering 5, no. 3 (2018): 57. http://dx.doi.org/10.3390/bioengineering5030057.
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Cell culture and cell scaffold engineering have previously developed in two directions. First can be ‘static into dynamic’, with proven effects that dynamic cultures have benefits over static ones. Researches in this direction have used several mechanical means, like external vibrators or shakers, to approximate the dynamic environments in real tissue, though such approaches could only partly address the issue. Second, can be ‘2D into 3D’, that is, artificially created three-dimensional (3D) passive (also called ‘static’) scaffolds have been utilized for 3D cell culture, helping external culturing conditions mimic real tissue 3D environments in a better way as compared with traditional two-dimensional (2D) culturing. In terms of the fabrication of 3D scaffolds, 3D printing (3DP) has witnessed its high popularity in recent years with ascending applicability, and this tendency might continue to grow along with the rapid development in scaffold engineering. In this review, we first introduce cell culturing, then focus 3D cell culture scaffold, vibration stimulation for dynamic culture, and 3DP technologies fabricating 3D scaffold. Potential interconnection of these realms will be analyzed, as well as the limitations of current 3D scaffold and vibration mechanisms. In the recommendation part, further discussion on future scaffold engineering regarding 3D vibratory scaffold will be addressed, indicating 3DP as a positive bridging technology for future scaffold with integrated and localized vibratory functions.
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Yaroshenko, Leonid, and Roman Chubyk. "SUBSTANTIATION OF NEUROCONTROLER PARAMETERS FOR THE CONTROL SYSTEM OF THE VIBRATOR DRIVE OF ADAPTIVE VIBRATION TECHNOLOGICAL MACHINES." Vibrations in engineering and technology, no. 1(104) (April 29, 2022): 44–56. http://dx.doi.org/10.37128/2306-8744-2022-1-6.
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The article proposes and analyzes the structure of the neurocontroller for controlling the vibratory drive of adaptive vibrating technological machines (AVTM), which allows to implement a two-circuit neurocontrol system of energy and technological parameters of AVTM that its each circuit takes into account inertial and dissipative characteristics. By monitoring the phase shift between the frequency of forced oscillations of the AVTM working body and the frequency of cyclic forcing force of the vibrating drive and using predictive model neurocontrol technology to correct the frequency of cyclic forcing force of the vibrating drive, the neurocontroller provides mini resonant operation. The second circuit of neurocontrol provides on the resonant frequency tracking and stabilization of the specific work of the vibration field of AVTM during the vibration cycle using to adjust the amplitude of oscillations of the working body hybrid neuro-PID control system with self-tuning based on neuromodel AVTM system. The proposed design of the neurocontroller to control the vibratory drive of adaptive vibrating technological machines can improve the quality characteristics of the control of dynamic parameters of both electromagnetic and unbalanced vibratory drive. The use of neural network technologies in the design solution allows the introduction of neurocontrol algorithms that change the parameters of the process of vibration processing implemented by AVTM, or change the load mass of the working body AVTM, through the use of predictive model neurocontrol based on the simplex method or quasi-Newtonian algorithm that will optimally choose a strategy for correcting the frequency of cyclic forcing force of the vibrator to ensure and maintain a constant resonant mode of AVTM and at the resonant frequency AVTM will stabilize the specific operation of the neural network PID-controller with self-adjustment on the basis of the direct AVTM neuroemulator.
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Li, Lindan, Jiaye Wu, Yingqian Zhang, et al. "Research Progress of concrete Vibratory Technology." Academic Journal of Science and Technology 3, no. 2 (2022): 71–77. http://dx.doi.org/10.54097/ajst.v3i2.2095.
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Traditional vibrating equipment and technology combined with manual experience to judge the quality of concrete vibrating is highly subjective and poorly standardized. Due to under-vibration, over-vibration and leakage vibration, the concrete has defects such as holes, segregation and cracks, which lead to the pouring quality not meeting the design requirements. The research progress of vibrating technology is introduced from four aspects: parameters affecting vibrating quality, evaluation method of vibrating quality, key technologies and development trends of vibrating. The research shows that intelligent vibrating has a significant role in promoting the development of civil engineering construction, and also lays a good foundation for the development of related engineering equipment and vibrating machinery automation.
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Plokhikh, Vadim V., Boris B. Danilov, and Dmitry O. Cheshchin. "DYNAMICS AND OPERATING CYCLES OF VIBRATORY-PERCUSSIVE SYSTEMS INVOLVED IN IMPLEMENTATION OF ADAPTIVE TECHNOLOGIES." Interexpo GEO-Siberia 2, no. 4 (2021): 67–77. http://dx.doi.org/10.33764/2618-981x-2021-2-4-67-77.
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The study discusses serviceability of pneumatic and hydraulic percussion machines within robotic drilling systems. The newly designed action charts of percussion machines allow varying flow data of the machines versus properties of the medium being treated, which enables technological adaptability of the machines. Simulation modeling of the operating cycle dynamics in ITI SimulationX made it possible to determine dynamic parameters of vibratory-percussive systems. The research findings prove designability of such machines.
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Anatolii, Dudnikov, Dudnikov Ihor, Kelemesh Anton, and Gorbenko Oleksandr. "INFLUENCE OF THE HARDENING TREATMENT OF A MACHINE PARTS' MATERIAL ON WEAR-RESISTANCE." Eastern-European Journal of Enterprise Technologies 3, no. 1 (93) (2018): 6–11. https://doi.org/10.15587/1729-4061.2018.130999.
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Here we consider a task on improving resource of machinery and parts by employing more efficient technologies in mechanical engineering, both in the manufacture and repairing production at restoration. The main objective of present study is to substantiate and choose a more efficient method for increasing the durability and reliability of parts in piston assembly of internal combustion engines with respect to structural and materials-science factors. We have developed a technological process for the restoration of parts using a vibratory deformation whose special feature is the periodic action of a working body on the machined surface. We defined the following parameters for the technological process of vibratory hardening: deformation rate υ=0.030 m/s, machining tolerance A=2.0 mm, a working body is the punch with inclination angle β=11°, calibration belt height h=4 mm. The conditions and duration of the examined parts operation were analyzed, as well as methods for pretreatment, restoration techniques, and materials. An analysis of the factors that determine the wear intensity of parts’ working surfaces allowed us to develop a technological process of hardening both when manufacturing in mechanical engineering and while restoring in repairing production. We have investigated structural designs of a vibratory installation in order to choose higher efficiency of the technological process. The plasticity of parts increased by 21...27 % when using vibratory oscillations. The result of the conducted set of studies and experiments is the proposed technology for the restoration of bushings in connecting rods upper heads using a method of vibratory hardening. The essence and special features of the technology imply that a worn-out working layer is compensated for by a plastic vibratory deformation with a punch dispensing a nonworking layer. The use of a given technology makes it possible to obtain a surface with enhanced wear resistance. The results obtained in the course of present research could be used in machine building in order to harden the indicated parts during manufacturing
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REYES, RAQUEL A. G. "Modernizing the Manileña: Technologies of conspicuous consumption for the well-to-do woman,circa1880s–1930s." Modern Asian Studies 46, no. 1 (2011): 193–220. http://dx.doi.org/10.1017/s0026749x1100062x.
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AbstractFrom the late nineteenth century onwards, a new range of European and American technologies, powered by electricity and gas, and intended for use on the body and in the home—especially appliances for the domestic kitchen—began to appear in Manila. Electro-mechanical vibratory devices and steam-powered massagers for the body; hair waving and curling machines; and a multitude of technologies for the domestic kitchen, from stoves and water heaters to a gamut of electric and gas gadgetry that included percolators, boilers, electric waffle-irons, grills, and refrigerators (or ice-boxes, their precursor) were targeted largely at the affluent female consumer with promises to improve her physical appearance and health or make her daily life more comfortable. Their introduction and impact in the Philippines can tell a number of compelling stories—the desirability of European or American bourgeois culture, how the trappings of Western lifestyles were imagined, the extent to which the use and purchase of certain technologies aimed at replicating or emulating those lifestyles, or, as this paper explores, the gendered technological infrastructure of the ‘good life’. In this story, modern technologies designed for domestic settings and for use on women's bodies made manifest a myriad of desires and aspirations—prestige, status, cosmopolitanism, modernity, and urbanity. They also articulated a particular sensuousness and pleasure. Electro-vibratory devices, hair styling machines, and kitchen appliances could be experienced by all the senses and thus exerted a visceral appeal; their use proclaimed an enthusiasm for modern technology which, for the first time, emphasized the relevance of modern technology to women's everyday lives by the transformative effects they promised.
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Andrievsky, Boris, and Iuliia Zaitceva. "Symmetrical Control Law for Chaotization of Platform Vibrations." Symmetry 14, no. 11 (2022): 2460. http://dx.doi.org/10.3390/sym14112460.
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The paper proposes an experimentally validated method of chaotization of the platform movement process based on the principle of feedback control using a symmetrical (bidirectional) controller. The significance is shown and the prospect of chaotization of platform oscillations for vibration technologies, in particular, mixing of bulk materials, is disclosed. The proposed algorithm was comprehensively experimentally studied with a laboratory vibratory setup, and the results of experiments demonstrating its efficacy are presented.
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Lamerdonov, Zamir G., Tatiana Yu Kashirova, and Inna A. Zhirikova. "METHODS OF CALCULATION AND STRENGTHENING WIRE ANCHOR SYSTEMS AND DEVICES FOR THEIR INSTALLATION." Land Reclamation and Hydraulic Engineering 15, no. 1 (2025): 232–45. https://doi.org/10.31774/2712-9357-2025-15-1-232-245.
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Purpose: calculation substantiation of forces acting on wire anchor systems, as well as development of devices for their installation. Materials and methods. Recently, anchor systems have been increasingly used in construction, especially in the field of environmental technologies. It is proposed to install anchor systems using vibratory hammers, impact beams, and by blockage guide rods to a great depth. Currently, wire anchors with conical tips, which have proven their efficiency and practical reliability, are actively used. The main research method is a theoretical approach. Results. Based on the static equilibrium equation, formulas for determining the pulling force are obtained. Active forces are the forces that pull out the wire anchor, while reactive forces determine the weight of the soil and the resistance that occurs during the pulling out process. The technologies for installing wire anchors, the systems of which have great potential for use in agriculture are presented; they are used to strengthen dam slopes. Conclusions. The improved designs of wire anchors and anchor systems which are used to increase bearing and static stability have been developed. A method for installing wire anchors including methods for blockage using specialized vibratory hammers and impact tools (hammers) has been developed. Calculation methods for wire anchors, reinforced structures and anchor systems, both flat and spatial, are proposed.
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Chen, Y., V. Wickramasinghe, and D. G. Zimcik. "DEVELOPMENT OF SMART STRUCTURE SYSTEMS FOR HELICOPTER VIBRATION AND NOISE CONTROL." Transactions of the Canadian Society for Mechanical Engineering 31, no. 1 (2007): 39–56. http://dx.doi.org/10.1139/tcsme-2007-0003.
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Helicopters are susceptible to high vibratory loads, excessive noise levels and poor flight stability compared to fixed-wing aircraft. The multidisciplinary nature of helicopter structures offers many opportunities for the innovative smart structure technology to improve helicopter performance. This paper provides a review of smart structures research at the National Research Council Canada for helicopter vibration and cabin noise control applications. The patented Smart Spring approach is developed to vary the blade impedance properties adaptively to reduce the vibratory hub loads transmitted to the fuselage by vibration reduction at the source. A smart gearbox strut and active structural acoustic control technologies are investigated to suppress the vibration and tonal gear meshing noise into the cabin either by modifying the vibration load transmission path, or weakening the coupling between exterior and cabin acoustic fields. Two adaptive seat mount concepts are proposed to reduce the vibration of the aircrew directly to improve ride quality of the vehicle.
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Korendiy, Vitaliy, Oleksandr Kachur, Rostyslav Predko, Oleh Kotsiumbas, Rostyslav Stotsko, and Mykola Ostashuk. "Generating rectilinear, elliptical, and circular oscillations of a single-mass vibratory system equipped with an enhanced twin crank-type exciter." Vibroengineering Procedia 51 (October 20, 2023): 8–14. http://dx.doi.org/10.21595/vp.2023.23657.
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One of the most intensively developing fields of vibratory technologies is focused on improving the design and operational parameters of the excitation mechanisms and drives. The present research is devoted to a novel twin crank-type exciter driven by a permanent-magnet direct-current motor. The research methodology consists of mathematical modeling and computer simulation of the dynamic behavior of a single-mass oscillatory system equipped with the proposed exciter. The obtained results substantiate the possibilities of generating rectilinear, elliptical, and circular oscillations of the working member by applying the corresponding design changes of the transformable vibration exciter. The major scientific novelty of the carried-out investigations consists in determining the influence of specific design parameters of the exciter on the trajectory (path) of the working member motion. The obtained results can have a significant practical value while designing new and improving existent drives of various vibratory equipment (screens, conveyors, sieves, compactors, technological (lapping, polishing) machines, etc.).
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Patel, Chandradip, and Patrick McCluskey. "Performance of MEMS Vibratory Gyroscope under Harsh Environments." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2012, DPC (2012): 000633–54. http://dx.doi.org/10.4071/2012dpc-ta34.
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Microelectromechanical systems (MEMS) gyroscope is a sensor that measures the rate of change in an angular position of an object. MEMS vibratory gyroscopes are increasingly used in applications ranging from consumer electronics to aerospace and are now one of the most common MEMS products after accelerometers.With advances in fabrication technologies, the low-cost MEMS gyroscope has opened up a wide variety of applications with environmental conditions ranging from medium to harsh. Despite their widespread use, the performance of MEMS gyroscopes in harsh environments is still under question. While some studies have been conducted to understand the effects of high mechanical shock, high frequency vibration and high frequency acoustic environment on the MEMS gyroscopes,the effects of sustained exposure to temperature combined withother harsh environment stresseshave not been well researched.Thus, it is necessary to quantify MEMS vibratory gyroscope performance under such conditions.This research reviews current harsh environment studies anddemonstrates the effects of an elevated temperature and sustained exposure to temperature combined humidity on the MEMS vibratory gyroscope. In order to quantify such effects, several tests have been performed. A short-term temperature effect on MEMS gyroscope was examined through temperature characterization test forfive thermal cycles at wider temperature ranges. A long-term temperature effect on the MEMS gyroscope was inspected through 500 thermal cycles; while, combined effects of temperature and humidity was studied through temperature humidity bias(THB) test and highly accelerated stress test (HAST).
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Mahmoudian, Mehrdad, Joel Filho, Rui Melicio, Eduardo Rodrigues, Mojgan Ghanbari, and Paulo Gordo. "Three-Dimensional Performance Evaluation of Hemispherical Coriolis Vibratory Gyroscopes." Micromachines 14, no. 2 (2023): 254. http://dx.doi.org/10.3390/mi14020254.
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In this paper, the oscillation patterns and characteristics of gyroscopic reaction to rotation-induced Coriolis force and phase relations are reviewed by examining the main principles of operation of Coriolis vibratory gyroscopes based on the dynamic relations and proposed improvements in performance using parameter changes. Coriolis vibratory gyroscopes (CVGs) are among the most modern applicable gyroscopes in position detection that have replaced traditional gyroscopes due to some great features of the design of vibrating proof mass and elastic suspension. Given the key characteristics of capacitive versus piezoelectric excitation technologies for determining the vibration type in sensors, their operating principles and equations have completely changed. Therefore, two-dimensional finite element analysis is required to evaluate their optimal performance. Since the sensor space is constantly vibrating, a general equation is presented in this paper to explain the impact of parameters on the frequency of different operating modes. The main purposes of building vibrating gyroscopes are replacing the constant spinning of the rotor with a vibrating structure and utilizing the Coriolis effect, based on which the secondary motion of the sensitive object is generated according to the external angular velocity.
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Bogățeanu, Răzvan, Claudiu Bîșu, Constantin Dogariu, Sorin Mihai Croitoru, and Dana Tilină. "Researches on mechanical vibrations used in assistive devices manufacturing." MATEC Web of Conferences 290 (2019): 01001. http://dx.doi.org/10.1051/matecconf/201929001001.
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Deformable structures vibrate (oscillatory motion) under the action of impulses or variable forces. Vibration of a mechanical structure results from the transformation of potential energy into kinetic energy and could be used in the construction of assistive devices. The vibratory devices for posttraumatic rehabilitation of upper limbs can stimulate muscular, circulatory and neurological systems. The paper presents the necessary elements for the personalization of rehabilitation devices like orthoses and some theoretical and experimental results related to this subject. For the persons with disabilities, the integration of enabling technologies and attributes embracing mobility, sensors and actuators provides the possibility of achieving independence in their social life. The paper underlines the importance of the systematic application of technologies, engineering methodologies or other scientific principles used in order to overpass the barriers confronted by people with disabilities.
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Soliman, Mariam, Fadwa Eljack, Monzure-Khoda Kazi, Fares Almomani, Elalim Ahmed, and Ziad El Jack. "Treatment Technologies for Cooling Water Blowdown: A Critical Review." Sustainability 14, no. 1 (2021): 376. http://dx.doi.org/10.3390/su14010376.
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Cooling water blowdown (CWBD) generated from different industries and district cooling facilities contains high concentrations of various chemicals (e.g., scale and corrosion inhibitors) and pollutants. These contaminants in CWBD streams deem them unsuitable for discharge into surface water and some wastewater treatment plants. The pollutants present in CWBD, their sources, and the corresponding impacts on the ecosystem are discussed. The international and regional (Gulf states) policies and regulations related to contaminated water discharge standards into water bodies are examined. This paper presents a comprehensive review of the existing and emerging water treatment technologies for the treatment of CWBD. The study presents a comparison between the membrane (membrane distillation (MD), reverse osmosis (RO), nanofiltration (NF), and vibratory shear enhanced membrane process (VSEP)) and nonmembrane-based (electrocoagulation (EC), ballasted sand flocculation (BSF), and electrodialysis (ED)) technologies on the basis of performance, cost, and limitations, along with other factors. Results from the literature revealed that EC and VSEP technologies generate high treatment performance (EC~99.54% reduction in terms of silica ions) compared to other processes (membrane UF with reduction of 65% of colloidal silica). However, the high energy demand of these processes (EC~0.18–3.05 kWh/m3 and VSEP~2.1 kWh/m3) limit their large-scale applications unless connected with renewable sources of energy.
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Zhang, Xin, Long He, Manoj Karkee, Matthew David Whiting, and Qin Zhang. "Field Evaluation of Targeted Shake-and-Catch Harvesting Technologies for Fresh Market Apple." Transactions of the ASABE 63, no. 6 (2020): 1759–71. http://dx.doi.org/10.13031/trans.13779.
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HighlightsThree shaking methods and vibratory harvesting systems were evaluated and compared.Multi-year field evaluations were performed with up to six cultivars trained to formal architectures.The updated semi-automated system achieved the highest fruit removal efficiency and the best fruit quality.Abstract. Apple is the most economically important agricultural crop in Washington State. In 2018, Washington State produced ~3.3 billion kg of apple, accounting for approximately 63% of U.S. production. Fresh-market apple is currently harvested manually, requiring large numbers seasonal semi-skilled workers for a small harvest window. To overcome the increasing challenges of uncertain labor availability and raising labor costs, a promising mechanical harvesting system, using a targeted shake-and-catch approach, is under development at Washington State University. This study evaluated the system by analyzing its fruit harvest efficiency and fruit quality with three shaking methods, i.e., continuous non-linear, continuous linear, and intermittent linear shaking, on up to six apple cultivars trained to formal tree architectures. Results showed that intermittent linear shaking achieved 90% fruit removal efficiency for ‘Scifresh’ cultivar, while continuous linear shaking achieved only 63% removal efficiency for ‘Gala’. This study also compared three vibratory systems: a hand-held system, a hydraulically driven system, and a semi-automated hydraulic system. The semi-automated system achieved the highest fruit removal efficiency (90%), followed by the hand-held (87%) and hydraulic (84%) systems, mainly due to the different shaking methods employed. However, the differences were statistically insignificant. Fruit catching efficiency varied among the harvesting systems, with the hand-held system achieving the highest efficiency (97%), followed by the hydraulic (91%) and semi-automated (88%) systems. Among the three tested technologies, the prototype semi-automated system achieved the highest level of mechanization, as well as high fruit removal efficiency and the best fruit quality. Because the semi-automated system did not include an auto-positioning function, positioning its shaker head took about eight times longer (~103 s) than the actual shaking time (~13 s), which suggests that a fully automated system is desirable to further increase productivity. This study showed that the shake-and-catch approach has great potential for practical adoption in harvesting of fresh-market apple and therefore can have a positive economic impact on the U.S. apple industry. Keywords: Automation in apple production, Bulk mechanical harvest, Semi-automated system, Shaking method, Time efficiency.
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Z., Stotsko, Topilnytskyy V., D.Rebot, and Kysyy Y. "INVESTIGATION OF THE DYNAMICS OF FRIABLE LOAD OF VIBRATING TECHNOLOGICAL MACHINES WITH VERTICAL INDIGNATION." Technological Complexes 1, no. 15 (2018): 27–36. https://doi.org/10.5281/zenodo.2669557.
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Built model of loose load of vibration technological machines with the vertical indignation of working parts, which is presented by stratification of flat parallel beams which carry out the nonlinear vertical vibrations. The dynamic processes of the technology of vibration compression of the friable environment and separation (mixing) of its constituents are explored with the purpose of intensity rise of the given technological processes. It is got dependences for determination of physic-mechanical properties influence on constituents of friable loading of vibratory technological machines on its dynamics.
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Sivachenko, Leonid Aleksandrоvich, and Tatiana Leonidovna Sivachenko. "CONTROLLED VIBRATORY MACHINES AND TECHNOLOGIES AS THE BASIS FOR CREATING A NEW INDUSTRY - PROCESSING MACHINE-BUILDING." Вестник Белорусско-Российского университета, no. 3 (2016): 74–85. http://dx.doi.org/10.53078/20778481_2016_3_74.
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Kupchuk, Igor. "EXPERIMENTAL RESEARCH PROCESS OF GRINDING FODDER GRAIN USING THE VIBRATION DISC-TYPE CRUSHER." Vibrations in engineering and technology, no. 3(94) (October 26, 2019): 67–74. http://dx.doi.org/10.37128/2306-8744-2019-3-9.
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Feed make up a large part of the cost for livestock production and determine its quality. A very important technological operation with high energy costs is the grinding of feed grain (wheat, barley, peas, corn, etc.). Therefore, research on the development of effective technologies and cost-effective equipment for grinding is relevant and of practical value. In the laboratory of the theory of mechanisms and machines of the department of general technical disciplines and labor protection of Vinnitsa National Agrarian University, a vibratory disk crusher was designed to increase the level of technical support for the livestock industry. The crusher uses a more efficient method of grinding feed grain - a combination of impact and cutting, in contrast to a hammer mill that grinds with a free impact of hammers. The research results of grinding corn grain into feed by a vibratory disk crusher are presented in the article. An experimental prototype of the developed machine was used as an object of research. To register the input and output parameters of grinding, we used the material and technical base of the department of technological processes and equipment of processing and food industries. In order to comply with the zootechnical requirements for the degree of grinding of grain into feed, the dispersion of the obtained product was also controlled. The sizes of the fractions were determined by mechanical separation on a sieve analyzer. Data processing was carried out in the Microsoft Excel software package. Thus, graphs were obtained and rational parameters of the vibratory disk crusher were determined. This was done by analyzing the performance for the crusher depending on the rotor angular velocity, the sieve perforation diameter and the grain moisture content.
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Grupen, C. G., S. J. Scott, and R. B. Gilchrist. "263.Effects of animal pairing on marmoset sperm collected by penile vibratory stimulation." Reproduction, Fertility and Development 16, no. 9 (2004): 263. http://dx.doi.org/10.1071/srb04abs263.
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The marmoset monkey (Callithrix jacchus) is an important model species for the development of reproductive technologies in humans and endangered primates. Obtaining sufficient sperm of high quality is a limiting factor in implementing marmoset IVF. A method for the collection of marmoset semen, using penile vibratory stimulation (PVS), has recently been described (1). Due to the high rate of copulation in marmosets, the pairing of males with females may affect semen collection. The aim of the present study was to determine whether the quantity and motility of sperm collected by PVS is affected by animal pairing. A total of 10 adult male marmosets were used, of which 3 were paired with another adult or juvenile male, and 7 were paired with an adult female. Semen was collected from each male on up to 5 separate occassions in sterile glass tubes. PVS involved the application of successive sequences of increasing vibration to the penis using a FertiCare personal vibrator. Immediately following collection, pre-warmed Hepes-buffered TALP medium (200 μl) was added to the ejaculate. Sperm suspensions were evaluated for total sperm count and sperm motility. Ejaculates were obtained from male-paired males on every attempt (12 of 12), whereas 5 of 23 attempts failed to yield an ejaculate from female-paired males. The number of sequences of stimulation needed to obtain an ejaculate differed between males but was unaffected by animal pairing. The ejaculates collected from female-paired males had lower total numbers of sperm (3.9���1.4�×�106 v. 10.1���2.2�×�106; P�<�0.05) with a lower percentage motile (35���9% v. 85 � 13%; P<0.01), compared with those from male-paired males. We conclude that housing males separately from females increases the quantity and motility of sperm collected by PVS. (1) Schneiders, A., Sonksen, J., Hodges, J. K. (2004) J. Med. Primatol. 33, 98–104.
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Suleimenov, A. D., S. R. Baigereyev, and G. A. Guryanov. "PRECONDITIONS FOR THE DEVELOPMENT OF A NEW MILL DESIGN WITH A V-SHAPED CHAMBER." Bulletin of Shakarim University. Technical Sciences, no. 1(17) (March 29, 2025): 78–86. https://doi.org/10.53360/2788-7995-2025-1(17)-10.
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The grinding process plays a crucial role in various industries, including mining, cement, chemical, and food production. Despite technological advancements, existing milling technologies often face challenges related to energy consumption, component wear, and process control complexity. This study explores innovative approaches to improve mill designs, focusing on vibratory and ball mills with novel structural enhancements.A patent-based review was conducted to analyze different technical solutions aimed at optimizing grinding efficiency. A key innovation discussed is the introduction of an inclined-angle grinding chamber, which facilitates complex motion of grinding bodies, increasing impact directions on material particles. Additionally, vibratory mills with independent unbalanced drives were examined for their ability to enhance grinding chamber oscillations and increase productivity. However, these designs do not ensure counter-motion of grinding bodies, which is critical for maximizing impact energy.To address this gap, a new mill design is proposed, featuring a V-shaped grinding chamber combined with a vibration drive to induce counter-collision of grinding balls. This configuration significantly enhances impact energy and grinding efficiency. The proposed solution integrates all effective grinding principles, offering a novel approach to achieving superior material processing performance. Further experimental validation is recommended to confirm its advantages over existing designs.
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Dhumal, Akshay. "A Review of CNN-Based Object Recognition and Tracking Systems for Visually Impaired People." International Journal for Research in Applied Science and Engineering Technology 12, no. 11 (2024): 155–59. http://dx.doi.org/10.22214/ijraset.2024.64986.
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Visually impaired persons (VIPs) face significant challenges in navigating their environments, impacting their independence and quality of life. This paper reviews recent advancements in assistive technologies aimed at enhancing mobility and safety for VIPs. It explores various systems, including wearable devices, object detection technologies, and navigation aids, highlighting their functionalities, limitations, and potential future develop- ment. The integration of machine learning and sensor technologies has led to innovative solutions that provide realtime feedback and improved spatial awareness for users. VIPsneed assistance in performing daily tasks such as object detection, obstacle recognition,and navigation, particularly in indoor and outdoor environments. The paper emphasizes the importance of protecting and ensuring the safety of VIPs. Devices typically use sensors like infrared, ultrasonic, and imagery to gather environmental data, which is then processed by machine learning techniques. Users receive feedback via auditory or vibratory means. The paper provides a comprehensive comparative analysis of assistive devices, discussing their key attributes, challenges, and limitations, along with a score-based evaluation to help select appropriate devices for specific needs
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Bogdan, Korobko, and Bugrov Dmytro. "DEVELOPMENT OF A SETUP FOR VIBRATORY ABRASIVE TREATMENT OF SURFACES OF DECORATIVE ELEMENTS WITH AN ACTIVE WORKING TOOL." Vibrations in engineering and technology, no. 1(112) (April 22, 2024): 5–10. http://dx.doi.org/10.37128/2306-8744-2024-1-1.
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This work provides an overview of equipment and technologies for decorative-finishing treatment of parts. It is established that the most effective methods are abrasive mechanical processing techniques such as tumbling, vibrational, centric-rotational, and centric-planetary. Each of them exhibits varying levels of efficiency in specific application areas. Currently, these methods ensure the highest processing efficiency and quality while maintaining the lowest product cost and manufacturing complexity. Technological equipment is currently produced in series, which may include relatively complex assemblies and mechanisms to address complex technological process tasks, each having specific drawbacks. The main directions for improving equipment are identified, and a classifier of part characteristics for vibro-processing is provided to standardize and unify. Structural schemes for setups for vibratory abrasive processing with actively positioned horizontal and vertical working tools are proposed. The uniqueness of these setups lies in the ability to create vibrational fields of different intensities (controlled vibratory exciter of the working chamber) and to control the intensity of the motion of the working tool. Control over these parameters allows adapting the setup to a specific technological process and achieving optimal technical and economic indicators for vibro-processing parts, especially for decorative elements with complex shapes, small dimensions, diverse material characteristics – varying hardness and viscosity, which may pose challenges with conventional methods.
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S. Gosani, Dhruv. "REVIEW OF UNDERWATER WELDING PROCESS UNDER MECHANICAL VIBRATION FOR ENHANCE PROPERTIES OF WELDING JOINT." International Journal of Engineering Applied Sciences and Technology 6, no. 6 (2021): 304–10. http://dx.doi.org/10.33564/ijeast.2021.v06i06.045.
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In present work arc welding technology, by applying mechanical vibrations during the welding in arc in underwater welding process. Studies have showing that welding of metals along with mechanical vibrations result in uniform and finer grain structures. Metallographic studies conducted show that weld metals under vibratory condition infatuated comparatively finer microstructure and high hardness, due to the finer microstructure. The concept of welding in underwater yields the attraction of much naval construction because it is useful in repairing of collided ships and damaged ones. Interest of underwater welding of this steel grade is connected with necessity of preparing welding repair technologies for subsea pipelines widely used in offshore oil and gas industry.
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Paladiychuk, Yuri, Inna Telyatnіk, and Marina Kubai. "RESEARCH OF THE VIBRATORY FORMATION OF THE COMPASSION OF POWDER MATERIALS BY HYDRO-IMPULSE LOADING." ENGINEERING, ENERGY, TRANSPORT AIC, no. 3(122) (December 2, 2023): 35–42. http://dx.doi.org/10.37128/2520-6168-2023-3-4.
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Modern trends in the field of mechanical engineering require constant improvement of production through the introduction of new methods and means aimed at increasing the reliability of parts and the overall quality of products, while reducing the costs of their production. The reliability of machine parts is determined by various factors, such as strength, resistance to wear, vibration and high temperatures. In order to achieve these reliability criteria, various methods are widely used, such as material selection and the use of technologies aimed at increasing strength and wear resistance, such as heat treatment, surface treatment of parts by various physical methods, and stress reduction. One of the methods of increasing the fatigue strength and wear resistance of parts includes the use of surface plating on the working surfaces of parts in general and in areas of stress concentration in particular. The mentioned article carefully analyzes the process of forming metal powders, considering it as a technological operation that leads to the creation of powder forms. A detailed analysis and comparison of the equipment used for vibropress molding of blanks from powder materials is also carried out. The article describes the main technological processes of vibration and shock impact on materials. In addition, the article offers schemes and methods of implementation of vibration molding of powder materials, as well as analysis and classification of these processes according to their characteristics of vibration and vibration-impact modes. This allows you to understand the effectiveness of various methods and their applicability in specific production conditions, contributing to the further development and improvement of modern technologies in mechanical engineering.
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Tsouvalas, Apostolos. "Underwater Noise Emission Due to Offshore Pile Installation: A Review." Energies 13, no. 12 (2020): 3037. http://dx.doi.org/10.3390/en13123037.
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The growing demand for renewable energy supply stimulates a drastic increase in the deployment rate of offshore wind energy. Offshore wind power generators are usually supported by large foundation piles that are driven into the seabed with hydraulic impact hammers or vibratory devices. The pile installation process, which is key to the construction of every new wind farm, is hindered by a serious by-product: the underwater noise pollution. This paper presents a comprehensive review of the state-of-the-art computational methods to predict the underwater noise emission by the installation of foundation piles offshore including the available noise mitigation strategies. Future challenges in the field are identified under the prism of the ever-increasing size of wind turbines and the emerging pile driving technologies.
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A, Lalitha, Likhitha Sajja, Sai Krishna Yasam, Sai Vamsi Venakata, and Naveen Vutla. "Advance Foot Step Generator Using RFID Card Based Security System." International Journal for Modern Trends in Science and Technology 11, no. 03 (2025): 183–89. https://doi.org/10.5281/zenodo.15093711.
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<em>With the rising demand for electrical energy due to population growth, innovative and sustainable power generation methods are essential. Traditional energy generation relies heavily on fuel-based technologies, leading to environmental and economic concerns. This paper presents an alternative approach using piezoelectric sensors to harness unwanted vibrations and convert them into usable electrical energy. By employing vibratory plates embedded with piezoelectric sensors, mechanical vibrations are transformed into alternating current (AC), which is then rectified into direct current (DC) using an ultra-fast switching diode. The generated power can be stored in batteries for future use or supplied directly to electrical loads. This technique offers an eco-friendly and fuel-free method for energy generation, utilizing ambient mechanical energy efficiently.</em>
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Olha, Dubrovina. "VIBRATORY DRYERS AS AN EFFECTIVE TOOL FOR REDUCING ENERGY CONSUMPTION IN PRODUCTION." Vibrations in engineering and technology, no. 1(112) (April 22, 2024): 81–89. http://dx.doi.org/10.37128/2306-8744-2024-1-9.
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Drying of materials is a complex technological process used in various industries and often is one of the main stages of production. This process, in particular for bulk materials, depends on humidity, particle size, hydrodynamic conditions of the particles flowing through the drying agent and environmental parameters. Grain dryers expose grain to more stringent conditions than natural drying, which can potentially lead to a deterioration in grain quality. The combination of these factors determines the nature of the entire process. In agricultural production, the drying stage is one of the most important for grain preservation. Currently, the convective drying method is widely used for this process. However, along with its advantages, this method also has a number of significant disadvantages, one of the most significant of which is its high energy consumption. In this regard, scientific research is being intensively conducted to develop ways and methods to reduce the energy intensity of the convective drying method. The effects of vibration on raw materials are being rapidly introduced in various industries. The use of vibration technologies during drying intensifies the process of processing grain raw materials due to the rapid renewal of its surface in contact with the drying agent. Fast and efficient drying with vibration technology reduces moisture content and the risk of the appearance of bacteria and mold in the grain. The construction of the dryer using vibration technology helps to avoid overheating of the grain, providing optimal temperature conditions, which contributes to the preservation of nutrients and other useful properties of bulk agricultural materials.
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Krake, Luther. "Helicopter Airframe Fatigue Spectra Generation." Advanced Materials Research 891-892 (March 2014): 720–25. http://dx.doi.org/10.4028/www.scientific.net/amr.891-892.720.
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Helicopter airframe fatigue cracking is a cause of significant and growing cost of ownership and operational readiness concerns for the operators of (primarily) metallic airframe helicopters. Airframe fatigue has often had relatively low priority for helicopters, with research and design concentrated on the fatigue of flight critical rotating structural components such as rotor blades and pitch links. The Australian Defence Science and Technology Organisation (DSTO) and the US Naval Air Systems Command are collaborating to develop improved methods and technologies that can be used to assess the fatigue damage endured by ageing helicopter airframes. The flight load sequencesor fatigue spectraexperienced by a helicopter airframe in its lifetime contain many billions of load cycles due to rotor revolutions. Fatigue spectra developed for helicopter airframe certification tests are heavily simplified for reasons such as computational efficiency, test practicality and cost. Real airframe fatigue spectra are likely to be influenced by the modes of vibration that might be present on the airframe, the attenuation of the vibratory loading that is introduced at the main and tail rotors and the relative magnitudes and influences of both quasi-static (manoeuvre induced) and vibratory loading. To better capture such complexity, more realistic, higher fidelity fatigue spectra are required. Fatigue spectra generation involves creating realistic flight-by-flight sequences of flight conditions and assigning high-fidelity flight loads data to those sequences. This paper details DSTOs development of a novel computer-automated process which pseudo-randomly generates realistic sequences of flight conditions to match a known or assumed usage spectrum.
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Lin, Legeng, Wanyi Qing, Yanhuan Huang, et al. "Comparison of Immediate Neuromodulatory Effects between Focal Vibratory and Electrical Sensory Stimulations after Stroke." Bioengineering 11, no. 3 (2024): 286. http://dx.doi.org/10.3390/bioengineering11030286.
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Focal vibratory stimulation (FVS) and neuromuscular electrical stimulation (NMES) are promising technologies for sensory rehabilitation after stroke. However, the differences between these techniques in immediate neuromodulatory effects on the poststroke cortex are not yet fully understood. In this research, cortical responses in persons with chronic stroke (n = 15) and unimpaired controls (n = 15) were measured by whole-brain electroencephalography (EEG) when FVS and NMES at different intensities were applied transcutaneously to the forearm muscles. Both FVS and sensory-level NMES induced alpha and beta oscillations in the sensorimotor cortex after stroke, significantly exceeding baseline levels (p < 0.05). These oscillations exhibited bilateral sensory deficiency, early adaptation, and contralesional compensation compared to the control group. FVS resulted in a significantly faster P300 response (p < 0.05) and higher theta oscillation (p < 0.05) compared to NMES. The beta desynchronization over the contralesional frontal–parietal area remained during NMES (p > 0.05), but it was significantly weakened during FVS (p < 0.05) after stroke. The results indicated that both FVS and NMES effectively activated the sensorimotor cortex after stroke. However, FVS was particularly effective in eliciting transient involuntary attention, while NMES primarily fostered the cortical responses of the targeted muscles in the contralesional motor cortex.
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Tsurkan, Oleh, Anatoly Spirin, Dmytro Prysiazhniuk, and Andrii Didyk. "METHOD OF MEASURING OZONE CONCENTRATION DURING DRYING OF WALNUTS IN A VIBRATORY DRYER." Vibrations in engineering and technology, no. 3(114) (December 24, 2024): 83–89. https://doi.org/10.37128/2306-8744-2024-3-10.
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From a botanical point of view, walnuts belong to the genus Juglans, which has more than 20 different species. The name of this genus comes from the Latin phrase "iovis glans", which translates as "Jupiter's acorn". Walnut kernels are used in many industries - in medicine, food and perfume industries. With the addition of hard fruit shells, the technological process of tanning leather is carried out. The pericarp, due to its high iodine content, is used to dye fabrics in various shades of brown, as well as for medical purposes. Walnut shells are used to make activated carbon, grinding stones, linoleum, etc. Currently, Ukraine occupies the sixth-eighth position in the world ranking in terms of walnut cultivation, production and export. Over the past 30 years, an average of almost 90,000 tons of nuts have been produced per year. China is the world's leading producer and exporter of walnuts in shell, with over 705,000 tons per year. The top three countries are the United States and Iran, with over 405,000 tons and 256,000 tons respectively. Turkey, Burkina Faso and Mexico are also among the world's leading producers of walnuts. Almost 60% of walnuts in shell are grown and produced in Asia, 25.5% in South and North America. Europe produces 14.4%, Africa 3% [1-3]. Based on the results of previous studies, which established the prospects for using vibration effects on the processed medium during drying, as well as ozone during dehumidification of various agricultural raw materials, we developed the idea of combining vibration technologies and ozonation, which we implemented in a vibration dryer for processing walnuts with an ozone-air mixture.
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Livescu, Silviu, and Steven Craig. "A critical review of the coiled tubing friction-reducing technologies in extended-reach wells. Part 2: Vibratory tools and tractors." Journal of Petroleum Science and Engineering 166 (July 2018): 44–54. http://dx.doi.org/10.1016/j.petrol.2018.03.026.
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Voos, Patrick. "Metallographic Preparation for Electron Backscattered Diffraction." Materials Science Forum 702-703 (December 2011): 578–81. http://dx.doi.org/10.4028/www.scientific.net/msf.702-703.578.
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Electron Backscatter Diffraction measurement can provide much analytical information, such as the phase orientation or material identification. The “Quality” rating of the backscatter diffraction depends on the success rate of indexing. To achieve this, a deformation-free preparation is essential. In recent years most preparation methods have been optimized to contain on average only three to four sample preparation steps. The sample quality is excellent when reflected light microscopy is used. Due to the low information depth of the EBSD measurement (20-100nm), the standard method must be modified. The preparation method must remove the scratches and the underlying damage in order to obtain a high quality EBSD pattern. The optimization can be done by chemo-mechanical polishing, electrolytic polishing or vibratory polishing. Examples are used to show where the limits of the technologies are and to give helpful ‘Hints’ for EBSD sample preparation.
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Markelz, Andrew, Mary Catherine Scheeler, Paul Riccomini, and Jonte C. Taylor. "A Systematic Review of Tactile Prompting in Teacher Education." Teacher Education and Special Education: The Journal of the Teacher Education Division of the Council for Exceptional Children 43, no. 4 (2019): 296–313. http://dx.doi.org/10.1177/0888406419877500.
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Researchers are exploring innovative technologies to prepare educators. A systematic literature review was conducted to study the role of tactile prompting (i.e., vibratory signals on a schedule) in teacher education. Ten studies meeting inclusion criteria were synthesized and analyzed based on how tactile prompting is utilized, effects of tactile prompting, and quality of research. Findings suggest studies with tactile prompting as the primary independent variable, or condition within a phase, demonstrated medium to very high Tau-U single-case effect sizes (range = 0.54-1.00) and high social acceptability on classroom management teaching behaviors. Simplistic prompting devices reduce cost, training, and anxiety barriers to adoption; however, innovations in wearable technology provide opportunities for a more robust behavior modification tool. Research suggests tactile prompting reduces cognitive load and provides multiple opportunities to practice, which has value in time-constrained preparation programs. Further exploration of this technique in teacher education is warranted.
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Ritter, Ekaterina, Alexey Savostin, Dmitry Ritter, Galina Savostina, Andrey Smirnov, and Sayat Moldakhmetov. "Application of a Surface Waveguide in Microwave Drying Units of the Agribusiness Industry." International Journal of Agronomy 2024 (March 12, 2024): 1–10. http://dx.doi.org/10.1155/2024/3689527.
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In the last two decades, the electromagnetic field of the microwave range has been successfully introduced into various branches of the agribusiness industry as one of the most promising and advanced technologies for drying manufactured products. In this regard, the article proposes a new microwave irradiation technique for drying various objects based on a surface waveguide’s properties. The paper analyses the main links that make up the surface waveguide as a microwave irradiation system and shows the ways of their implementation. The article describes the advantages of applying a vibratory device for exciting a surface wave, using a re-emitting antenna array, and operating a single conductor with a dielectric coating as a surface waveguide. Such advantages make it possible to introduce microwave drying units with the required distribution of electromagnetic field energy along the irradiated material, small dimensions, high drying quality, and low price.
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Eliseev, A. V., and N. K. Kuznetsov. "Optimal Vibration Fields in Problems of Modeling Dynamic States of Technical Objects." Advanced Engineering Research (Rostov-on-Don) 24, no. 1 (2024): 7–22. http://dx.doi.org/10.23947/2687-1653-2024-24-1-7-22.
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Introduction. Vibration interaction control is timely in production processes related to liquid and bulk media, systems of solids experiencing kinematic or force disturbances. At the same time, there is no single methodological basis for the formation of vibrational interactions. The issues of constructing optimal vibration fields of technical objects have not been addressed. The objective of the study is to develop a structural approach to the development of mathematical models in the problems of formation, evaluation, and correction of vibration fields of technical objects under conditions of intense force and kinematic loads. The task is to build vibration fields that are optimal in terms of the set of requirements, with the possibility of selecting the criterion of optimality of the vibration field of a technical object.Materials and Methods. A structural approach was used as the basic methodology. It was based on a comparison of mechanical vibratory systems used as computational schemes of technical objects, and structural schemes of automatic control systems, which are equivalent in dynamic terms. Lagrange formalism, elements of operational calculus based on Laplace integral transformations, sections of vibration theories, algebraic methods, and the theory of spline functions were used for structural mathematical modeling.Results. An approach to the selection of criteria for the optimality of vibration fields based on minimizing the residual of vibration fields for various required conditions was proposed. The problem was considered within the framework of a mechanical vibratory system formed by solids. It was shown that the optimal vibration field was determined by an external disturbance and was to satisfy condition Ay̅ = b. There, A — matrix mapping the operator of conditions to the shape of the vibration field at control points; b — vector of values of vibration field characteristics; “–” above y meant the vibration amplitude of the steady-state component of the coordinate. To evaluate the field with account for noisy or unreliable requirements for dynamic characteristics, the smoothing parameter was used, indicating the priority of the criterion of optimality of the vibration field shape. The construction of a field for a mechanical vibratory system showed that the value of the vibration amplitudes of generalized coordinates remained constant when the frequency of external kinematic disturbances changed. Two approaches to the correction of the field optimality criteria were considered: equalization of the vibration amplitudes of the coordinates of a technical object and the selection of an energy operator.Discussion and Conclusion. The development of the applied theory of optimal vibration fields involved, firstly, the correlation of the energy operator and the operator of the requirements for the shape of the vibration field in the theory of abstract splines. The second pair of comparable elements was the criterion of optimality of the vibration field and a system of requirements for the characteristics of the field at control points. The structural theory of optimal vibration fields improved in this way will find application in various industries. Accurate calculations in the formation, assessment, and correction of the states of systems under vibration loading are required in the tasks of increasing the durability of structures, improving measurements in complex vibratory systems, and developing new technologies and materials.
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Megahed, Sandra, Florian Fischer, Martin Nell, et al. "Manufacturing of Pure Copper with Electron Beam Melting and the Effect of Thermal and Abrasive Post-Processing on Microstructure and Electric Conductivity." Materials 16, no. 1 (2022): 73. http://dx.doi.org/10.3390/ma16010073.
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Due to the increasing demand for electrification in the automotive sector, the interest in the manufacturing and processing of pure Copper (Cu; purity 99.99%) is also increasing. Laser-based technologies have proven to be challenging due to Cu’s high optical reflectivity. Processing pure Cu with Electron Beam Melting (EBM) is a promising manufacturing route, allowing for high design freedom. The highest priority is to achieve outstanding thermal and electric conductivity in manufactured Cu components. Chemical contamination or manufacturing defects, such as porosity, significantly reduce the thermal and electric conductivity. The literature on post-processing (thermal and abrasive) of additively manufactured Cu is scarce. Therefore, this study discusses the correlation between as built and heat treated microstructure, as well as surface roughness on the EBM electric conductivity. EBSD analysis is performed to analyze the effect of microstructure on electric conductivity. The effect of sandblasting and vibratory finishing on surface roughness and electric conductivity is investigated. Additionally, the samples are mechanically tested in terms of hardness.
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Aliiev, Elchyn, Olha Aliieva, Volodymyr Govorukha, and Oleksandr Kobets. "Development of Mechatronic Systems for Targeted Division and Selection of Seed Material." Central Ukrainian Scientific Bulletin. Technical Sciences 2, no. 10(41) (2024): 131–41. https://doi.org/10.32515/2664-262x.2024.10(41).2.131-141.
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One of the key stages in seed material processing is sorting, as seed mixtures typically contain impurities of various origins. These impurities include stems, leaves, mineral inclusions, weed seeds, and damaged seeds of the primary crop. Seed sorting, as a subtask of separation, relies on the physical differences between the components of the mixture. The main physical characteristics of seeds include size, shape, weight, color, density, and others. These properties determine the parameters of modern seed cleaning equipment, influencing its design and operational efficiency. Modern separation methods based on physical and mechanical properties have been reviewed, focusing on aerodynamic characteristics (pneumatic columns), size (screens of various shapes), density (pneumo-vibratory separators), elasticity, electrophysical properties (dielectric separators), and color (photo separators). Technological lines for the separation of small-seeded crops have been presented, taking these parameters into account. The designs of adaptive aerodynamic, vibratory screen, vibro-pneumatic separators, selective seed graders, and photoelectronic separators have been described in detail. These machines are equipped with sensors, electric motors, control units, and software, enabling enhanced productivity and separation quality. For instance, an adaptive aerodynamic separator ensures uniform airflow, promoting efficient mixture separation, while the vibro-pneumatic separator can automatically adjust the inclination of the working surface to optimize the process. The integration of adaptive mechatronic systems into primary seed production processes significantly improves seed quality, reduces energy consumption, and ensures the flexibility of technological lines. Research results confirm the effectiveness of the proposed designs, fostering the development of modern methods for seed material separation. Furthermore, the development and implementation of these advanced systems align with the increasing demand for high-quality seeds in agriculture. The use of adaptive mechatronic systems allows for real-time monitoring and adjustment of separation processes, minimizing human intervention and errors. This not only enhances the precision of sorting but also contributes to sustainable practices by reducing waste and energy usage. In conclusion, the evolution of seed sorting technologies underscores the importance of innovation in agricultural machinery. By leveraging cutting-edge technologies such as photoelectric sorting and pneumatic systems, the agricultural industry can meet the growing challenges of productivity, efficiency, and environmental responsibility. The adoption of these advanced systems promises to elevate the standards of seed processing, ensuring better yields and more sustainable farming practices worldwide.
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Eroshenko, A. Y., S. M. Groshilin, S. E. Bygayan, et al. "PERSPECTIVE NONPHARMACOLOGICAL TECHNOLOGIES OF OPTIMIZATION OF PSYCHOPHYSIOLOGICAL QUALITIES AND WORKING CAPACITY OF OPERATORS." Marine Medicine 5, no. 2 (2019): 55–62. http://dx.doi.org/10.22328/2413-5747-2019-5-2-55-62.
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In connection with the growing tension and responsibility of the activities of professional operators, it is necessary to improve the means and methods of their medical and psychophysiological support. Purpose — assessment of the effect of combined physiotherapeutic procedures — CPP (contrasting thermal effects, vibratory massage of the spine and feet, aromatherapy, music therapy) with and without transcranial electrostimulation (TES) on the psychophysiological status and working capacity of operators. Materials and methods. Surveyed 26 professional operators (male) aged 27– 38 years, divided into 2 equal in size groups: the main (MG) and control (CG). All the examined individuals were used the CPP base complex, implemented in a physiotherapy capsule. The complex consisted of 14 daily 45-minute CPP in standard mode. For the MG, the 35-minute TES procedures, also performed in standard mode, were additionally included in the base complex. Prior to the appointment of correctional complexes and after their completion, the subjects were tested for sensorimotor qualities and operator performance. Results. The use of correctional complexes in both groups resulted in positive changes in psychophysiological qualities (acceleration of sensorimotor reactions, reduction in hand tremor) and operator performance (increased attention stability, amount of random access memory, improvement of mental operations). However, in the MG, the identified changes were more pronounced: the level of tremor in this group decreased by 13–14% compared with the baseline, while in the CG — only by 6–7% (p=0,037); the time of the complex sensorimotor reaction decreased on average by 5,1%, in the CG — by 3,8% (p=0,049); the integral indicator of operator’s working capacity in the MG increased on average by 10.8%, in the CG — by 7,7% (p=0,039). Conclusion. The developed correctional complex with the inclusion of TES is a highly effective and safe non-pharmacological technology of emergency optimization of psychophysiological qualities and working capacity of operators.
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Amendoeira Esteves, Rui, Chen Wang, and Michael Kraft. "Python-Based Open-Source Electro-Mechanical Co-Optimization System for MEMS Inertial Sensors." Micromachines 13, no. 1 (2021): 1. http://dx.doi.org/10.3390/mi13010001.
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The surge in fabrication techniques for micro- and nanodevices gave room to rapid growth in these technologies and a never-ending range of possible applications emerged. These new products significantly improve human life, however, the evolution in the design, simulation and optimization process of said products did not observe a similarly rapid growth. It became thus clear that the performance of micro- and nanodevices would benefit from significant improvements in this area. This work presents a novel methodology for electro-mechanical co-optimization of micro-electromechanical systems (MEMS) inertial sensors. The developed software tool comprises geometry design, finite element method (FEM) analysis, damping calculation, electronic domain simulation, and a genetic algorithm (GA) optimization process. It allows for a facilitated system-level MEMS design flow, in which electrical and mechanical domains communicate with each other to achieve an optimized system performance. To demonstrate the efficacy of the methodology, an open-loop capacitive MEMS accelerometer and an open-loop Coriolis vibratory MEMS gyroscope were simulated and optimized—these devices saw a sensitivity improvement of 193.77% and 420.9%, respectively, in comparison to their original state.
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Fradkov, Alexander L., Boris Andrievsky, Olga P. Tomchina, and Iuliia Zaitceva. "Formation of Vibration Fields for a Mechatronic Platform Driven by Dual Asynchronous Motors." Electronics 13, no. 16 (2024): 3165. http://dx.doi.org/10.3390/electronics13163165.
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This paper investigates the formation of vibration fields in a mechatronic setup driven by dual induction motors, relying on the controlled synchronization of unbalanced rotors. The proposed algorithm enables precise control over rotor speeds and phase shifts. Experimental results from a multi-resonance vibration laboratory setup demonstrate this approach’s ability to form the vibration fields. The ability to control these fields is crucial for applications such as vibratory transportation and the mixing of bulk materials. The results obtained can ensure a diverse picture of the complex trajectories of motion for various points of the platform, primarily in the screens, making various useful effects for vibration technologies. Additionally, the practical value of this research is that in the case of double synchronous mode the ordinate of the lower point of the trajectory is lower than in the case of single synchronous mode, which improves the efficiency of unloading and prevents congestion formation. The experimental data highlight the practical advantages and potential improvements in efficiency and reliability offered by this method.
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Bolshakov, R. S., and S. K. Kargapoltsev. "On developing structural and technical solutions to ensure the vibratory displacement of the working medium." iPolytech Journal 27, no. 4 (2024): 636–44. http://dx.doi.org/10.21285/1814-3520-2023-4-636-644.
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A research study into using vibration technologies for the transport of granular working medium was carried out. A vibration testing machine, whose calculation model includes a mechanical vibration system having two degrees of freedom with a rigid body on elastic supports, was selected as an object of research. The study involved analysing the variation in the system vibrations by using the structural theory for vibration isolation systems, where a dynamic equivalent represented by a structural diagram of an automatic control system is compared to the initial calculation model. The structural diagram of the system is based on the motion equations in operator form obtained using Lagrange differential equations of the second kind. The Laplace transform was used to transform the initial data for the system of differential motion equations. The paper addresses the characteristics of a new structural and technical solution in the field of vibratory displacement of a granular working medium using the working body of a vibration technological machine, which involves introducing a number of additional weights, levers, springs, and hinges. Here, springs comprise generalised structures containing both elastic elements and vibration dampers. To connect the coordinates of the endpoints in the working body of the vibration technological machine, analytical relations were obtained. It was established that varying the parameters of the elements within the elastic-lever blocks allows the dynamic state of the vibration technological machine to be controlled. In addition, it was shown that the obtained structural diagram helps to derive mathematical expressions for transfer functions, comprising the ratio between the motion coordinates of a technical object and an external force disturbance. On the basis of these expressions, the transfer function for the ratio of the motion coordinates of the vibration technological machine was formulated. A mathematical model of a vibration technological machine was obtained in the form of a transfer function, including a large number of additional elastic and massinertial elements, where the parameters of vibration displacement can be adjusted automatically. The research results will allow the existing technical solutions in the field of technological engineering to be modernised.
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Judex, Stefan, and Suphannee Pongkitwitoon. "Differential Efficacy of 2 Vibrating Orthodontic Devices to Alter the Cellular Response in Osteoblasts, Fibroblasts, and Osteoclasts." Dose-Response 16, no. 3 (2018): 155932581879211. http://dx.doi.org/10.1177/1559325818792112.
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Modalities that increase the rate of tooth movement have received considerable attention, but direct comparisons between devices are rare. Here, we contrasted 2 mechanical vibratory devices designed to directly transfer vibrations into alveolar bone as a means to influence bone remodeling. To this end, 3 cells types intimately involved in modulating tooth movements—osteoblasts, periodontal ligament fibroblasts, and osteoclasts—were subjected to in vitro vibrations at bout durations prescribed by the manufacturers. As quantified by an accelerometer, vibration frequency and peak accelerations were 400% and 70% greater in the VPro5 (Propel Orthodontics) than in the AcceleDent (OrthoAccel Technologies) device. Both devices caused increased cell proliferation and gene expression in osteoblasts and fibroblasts, but the response to VPro5 treatment was greater than for the AcceleDent. In contrast, the ability to increase osteoclast activity was device independent. These data present an important first step in determining how specific cell types important for facilitating tooth movement respond to different vibration profiles. The device that engendered a higher vibration frequency and larger acceleration (VPro5) was superior in stimulating osteoblast and fibroblast cell proliferation/gene expression, although the duration of each treatment bout was 75% shorter than for the AcceleDent.
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Ivanova, A. A., M. G. Berengarten, and M. A. Bulatov. "Modeling of regeneration process of oil contaminated quartz sand with water solution of natural surfactant in vibratory fluidized bed." Proceedings of the Voronezh State University of Engineering Technologies 81, no. 3 (2019): 197–202. http://dx.doi.org/10.20914/2310-1202-2019-3-197-202.
Full textAbstract:
The development of new and modernization of existing technological systems aimed at increasing the efficiency of treatment of surface storm water and industrial wastewater is an important area. Since individual objects are connected to each other in wastewater treatment systems, a change in the operation parameters of one of them will affect the others. For example, carrying out the correct effective regeneration of the quick filter, selected for a certain grade of filter material and the type of pollution, will relieve the work of the treatment plant as a whole. The actual direction is the introduction of environmentally friendly technical solutions and technologies. Therefore, special attention is paid to a natural surface-active substance (surfactant), which can be used as an active substance in a regenerating solution. The process of regeneration of an oil-contaminated sample of silica sand with a surfactant solution in a vibrated fluid bed is studied. Simulation of water flushing was achieved using an experimental setup with a vibrodrive. A quartz sand sample was taken from the quick filter of the Kotlyakovo-Kolomna group facilities of the Promotkhody waste facility after it was flushed. As an active component of the regenerating solution, a substance of natural origin, gum arabic polysaccharide, which has high surface activity against oil-fat deposits, was chosen. The concentration of gum arabic in the regenerating solution was chosen at the level of 1%. The results of the influence of the frequency and amplitude of vibrations on the regeneration process are obtained. To assess the effectiveness of the regeneration process, a dimensionless simplex is proposed, which is the ratio of the volumetric weighing force to the force of vibrations. A high degree of regeneration of a quartz sand sample in a fluidized bed is shown.
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Metel, Alexander S., Sergey N. Grigoriev, Tatiana V. Tarasova, et al. "Influence of Postprocessing on Wear Resistance of Aerospace Steel Parts Produced by Laser Powder Bed Fusion." Technologies 8, no. 4 (2020): 73. http://dx.doi.org/10.3390/technologies8040073.
Full textAbstract:
The paper is devoted to the research of the effect of ultrasonic postprocessing—specifically, the effects of ultrasonic cavitation-abrasive finishing, ultrasonic plastic deformation, and vibration tumbling on surface quality, wear resistance, and the ability of real aircraft parts with complex geometries and with sizes less than and more than 100 mm to work in exploitation conditions. The parts were produced by laser powder bed fusion from two types of anticorrosion steels of austenitic and martensitic grades—20Kh13 (DIN 1.4021, X20Cr13, AISI 420) and 12Kh18N9T (DIN 1.4541, X10CrNiTi18-10, AISI 321). The finishing technologies based on mechanical action—plastic deformation, abrasive wear, and complex mechanolysis showed an effect on reducing the submicron surface roughness, removing the trapped powder granules from the manufactured functional surfaces and their wear resistance. The tests were completed by proving resistance of the produced parts to exploitation conditions—vibration fatigue and corrosion in salt fog. The roughness arithmetic mean deviation Ra was improved by 50–52% after cavitation-abrasive finishing, by 28–30% after ultrasonic plastic deformation, and by 65–70% after vibratory tumbling. The effect on wear resistance is correlated with the improved roughness. The effect of used techniques on resistance to abrasive wear was explained and grounded.
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Vega, Esther, Lidia Paredes, Evan A. N. Marks, et al. "Application of Vibrating Reverse Osmosis Technology for Nutrient Recovery from Pig Slurry in a Circular Economy Model." Membranes 12, no. 9 (2022): 848. http://dx.doi.org/10.3390/membranes12090848.
Full textAbstract:
The rapid growth of the livestock sector in some areas of Europe has caused an imbalance between the generation of livestock manure and the availability of agricultural soil for its direct application as a fertilizer. Since the transport of pig slurry to other areas with nutrient-deficient soils is costly from an economic point of view due to its high water content, the application of new technologies for the concentration of this waste is considered key for reducing management costs. Consequently, the main objective of this study was to demonstrate the potential of vibratory shear enhanced processing (VSEP) operated with reverse osmosis membranes to recover nutrients from the liquid fractions of pig slurry (LF-pig slurry) and digestate (LF-digestate) and obtain concentrated fertilizing products. Use of the VSEP unit permitted reductions in the water contents of the LF-pig slurry and LF-digestate, around 77% and 67%, respectively. Both VSEP concentrates were characterized by their significant nutrient contents and showed a nitrogen fertilizer replacement value similar to that of mineral fertilizer as demonstrated in a barley crop pot-test, although the salinity of the digestate concentrate was identified as a key limitation, negatively impacting the agronomic yield of the test crop.
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McBride, Maranda, Tomasz Letowski, and Phuong Tran. "Search for an Optimum Vibrator Location for Bone Conduction Communication." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 49, no. 4 (2005): 606–9. http://dx.doi.org/10.1177/154193120504900401.
Full textAbstract:
The military is interested in ways to increase soldier effectiveness by improving radio communication. Bone conduction (BC) radio communication is attractive because the lightweight, compact design of BC vibrators offers the ability to receive radio communication without compromising situation awareness. Several companies are attempting to accommodate the needs of the military by creating communication devices incorporating BC technologies. However, the effectiveness of these devices differs in many respects. One factor that affects the detectability of signals received via bone conduction is the location of the vibrator on the skull. The intent of this study was to identify optimum locations for the placement of BC vibrators based on hearing threshold levels of various signals. Eleven signals were transmitted via bone conduction to 11 skull locations of 12 volunteers. Results of the study indicate that the condyle might be the most appropriate location because it resulted in the lowest overall threshold level.