To see the other types of publications on this topic, follow the link: Hot Applied Lime.
Journal articles on the topic 'Hot Applied Lime'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Hot Applied Lime.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Atrash, Sara, Asghar Ramezanian, Majid Rahemi, Reza Mostofizadeh Ghalamfarsa, and Elhadi Yahia. "Antifungal Effects of Savory Essential Oil, Gum Arabic, and Hot Water in Mexican Lime Fruits." HortScience 53, no. 4 (2018): 524–30. http://dx.doi.org/10.21273/hortsci12736-17.
Full textAbstract:
Penicillium digitatum is one of the most important causes of postharvest decay of Mexican lime fruit. The first stage of this study dealt with examining the effect of savory (Satureja hortensis) essential oil on P. digitatum mycelial growth in vitro. Savory essential oil (SEO) applied at concentrations of 0, 200, 400, 600, 800, 1000, and 1200 μL·L−1 to potato dextrose agar (PDA) medium. The results revealed that the application of SEO at concentrations of 1000 and 1200 μL·L−1 completely prevented the growth of P. digitatum. Gas chromatography–mass spectrometry results indicated that the dominant components of SEO were carvacrol (55.67%) and γ-terpinene (31.98%). In the second phase of the experiment, in vivo assays were conducted to evaluate the efficiency of SEO (800 and 1000 μL·L−1), hot water (40 and 50 °C), and gum arabic coating (2.5% and 5%) in restricting the fungi activity on Mexican lime fruit. The Mexican lime fruit were immersed in the aqueous solutions of SEO and gum arabic or in the hot water for 5 minutes, and then stored at 8 °C for 30 days. Savory essential oil at the concentration of 800 μL·L−1 proved to be the most effective treatment in conserving bioactive compounds of the fruits such as total phenols. This treatment also optimally maintained antioxidant activity and suppressed the activity of polyphenol oxidase (PPO) in the fruit peel. Moreover, hot water at 40 °C caused the least physicochemical changes and the highest appearance quality during storage.
2
Lee, Kang Hun, Man Ho Kook, Dong Ho Ha, Soo Ahn Kwon, and Moon Sup Lee. "Evaluation of Moisture Resistance of Hot-Mix Asphalt Mixture Containing Refined Air-Cooled Slag for Road Pavements." Key Engineering Materials 773 (July 2018): 271–77. http://dx.doi.org/10.4028/www.scientific.net/kem.773.271.
Full textAbstract:
Recently, potholes have drawn attention as a major pavement distress. In Korea and other countries, slaked lime is used to improve the moisture resistance of asphalt mixtures in order to prevent road damages by moisture. The present study was conducted to evaluate the moisture resistance of asphalt mixtures containing air-cooled slag having a chemical composition similar to that of slaked lime. To evaluate the moisture resistance of asphalt mixtures containing air-cooled slag, a moisture resistance test that is applied in Korea and other countries was performed. The evaluation of the moisture resistance of asphalt mixtures containing air-cooled slag showed that the coverage ratio measured by the dynamic immersion test was about 80%, which was similar to that of the asphalt mixtures containing slaked lime. In the case of the indirect tensile strength test, the TSR value tends to increase with increasing the air-cooled slag content of the specimens. But the indirect tensile strength was slightly lower in the specimen containing 3% air-cooled slag. The Hamburg wheel tracking test showed that the moisture resistance of the specimens produced in a laboratory and in a plant was good but that of the specimen containing 3% air-cooled slag was slightly lower. The laboratory experiment performed in the present study showed that the moisture resistance was improved by the addition of air-cooled slag, which has a similar composition with slaked lime, to asphalt mixtures. However, when the entire filler of the asphalt mixture was replaced by air-cooled slag, the strength was slightly decreased, indicating that an appropriate amount of air-cooled slag should be added. The applicability of air-cooled slag to asphalt pavement material may need to be studied through a microstructure analysis and a long-term pavement performance test to investigate the mechanism more accurately.
3
Wongpanit, Boochita, Sumitta Chotikamas, Supacharee Roddecha, Prapakorn Tantayotai, and Malinee Sriariyanun. "Study of Mathematical Models in Hot Air Drying of Herbs in Herbal Compress Ball." MATEC Web of Conferences 187 (2018): 01002. http://dx.doi.org/10.1051/matecconf/201818701002.
Full textAbstract:
Herbal compress ball is currently one of important products of Thailand for exporting sales worldwide. It is used in Thai traditional medical treatment and spa to reduce muscle pain and relaxation. This research aimed to generate the mathematical models representing the behaviors of herbs in hot air drying to extend shelf life for exporting sales. Here, six types of herbs, including Prai (Zingiber cassumunar Roxb.), Turmeric (Curcuma longa Linn.), Lemongrass (Cymbopogon citratus), Kaffir lime (Citrus hystrix), Soap Pod leaves (Acacia concinna) and Tamarind Leaves (Tamarindus indica Linn.) were dried in different temperature at 60, 70, and 80 °C. Fours drying models, Page, Henderson and Pabis, and Logarithmic and Fick's second law equation were applied with experimental data of drying herbs to predict the rate of diffusion of water. The results showed that the Page model is the most suitable model due to the highest decision coefficient (R2) but the lowest Root Mean Square Error (RMSE). The effective moisture diffusivity (Deff) of the herbs in herbal compress ball was increased with increased the drying temperature. The size of the herb particle translated inversely with effective moisture diffusivity (Deff) value.
4
Farrell, Michael J., Angela R. Laird, and Gary F. Egan. "Brain activity associated with painfully hot stimuli applied to the upper limb: A meta-analysis." Human Brain Mapping 25, no. 1 (2005): 129–39. http://dx.doi.org/10.1002/hbm.20125.
Full text
5
Rydland, J., A. Bjørnerud, O. Haugen, et al. "New intravascular contrast agent applied to dynamic contrast enhanced MR imaging of human breast cancer." Acta Radiologica 44, no. 3 (2003): 275–83. http://dx.doi.org/10.1080/j.1600-0455.2003.00068.x.
Full textAbstract:
Purpose: To evaluate the feasibility of using dynamic contrast-enhanced MR imaging with a new intravascular contrast agent in grading human breast cancer. Material and Methods: 23 patients with 27 breast tumors (21 carcinomas and 6 fibroadenomas) were examined with dynamic MR imaging after administration of Clariscan, an iron oxide nanoparticle with large T1 relaxivity and a long plasma half life. A 3D T1-weighted gradient echo sequence with an acquisition time of 60 s was repeated at regular intervals of 3–5 min before and up to 1 h after injection of 2 mg/kg b.w. of Clariscan. The endothelial transfer constant, Kps, which reflects overall vascular permeability, and the fractional plasma volume, fPV, were estimated from time-intensity curves acquired from three separate regions of interest (ROIs): whole tumor, a permeability hot spot, and a blood volume hot spot. Kps and fPV were compared to the results of histologic tumor grading (Scarff-Bloom-Richardson, SBR) and microvascular density, MVD. Results: A statistically significant correlation between the MR-derived Kps parameters and the SBR score was obtained for the whole tumor ROI ( R = 0.70), and for the permeability hot spot ROIs ( R = 0.67). A correlation between fPV and SBR was detected for the blood volume hot spot ROIs ( R = 0.48). There was no statistically significant correlation between Kps or fPV with MVD. Conclusion: The results support the hypothesis that dynamic MR with the intravascular contrast agent Clariscan may be used for non-invasive tumor grading.
6
Thurston, Rebecca C., James A. Blumenthal, Michael A. Babyak, and Andrew Sherwood. "Emotional Antecedents of Hot Flashes During Daily Life." Psychosomatic Medicine 67, no. 1 (2005): 137–46. http://dx.doi.org/10.1097/01.psy.0000149255.04806.07.
Full text
7
Moore, Deborah A. "Some Like It Hot: Promoting Measurement and Graphical Thinking by Using Temperature." Teaching Children Mathematics 5, no. 9 (1999): 538–43. http://dx.doi.org/10.5951/tcm.5.9.0538.
Full textAbstract:
Looking for a hot topic of discussion? Try temperature. Although many applied-measurement activities are used in classrooms today, most focus on distance or position. The fundamental concepts of temperature and the change in temperature over time are often overlooked.
8
WRÓBEL-KNYSAK, Anna, and Barbara KUCHARSKA. "THE ABRASION OF AL-SI COATINGS WITH DIFFERENT SILICON CRYSTAL MORPHOLOGY, APPLIED IN AUTOMOTIVE SILENCERS." Tribologia 269, no. 5 (2016): 209–18. http://dx.doi.org/10.5604/01.3001.0010.6701.
Full textAbstract:
This paper compares the abrasibility of aluminium-silicon coatings with silicon crystals of various forms. The tests were performed on Al-Si coatings with the chemical comp67890-osition corresponding to that of hypoeutectic and peritectic silumins (6-10wt% Si), manufactured by hot-dipping on type X2CrTi12 steel and by cold cladding with 60% cold reduction on AlMn1Cu alloy. The hot-dip coatings deposited on X2CrTi12 steel were investigated as made and after a two-stage heat treatment: 420oC/2h/water and 120oC/2h/air. The morphology, shape, and size of silicon crystals in the coatings were studied under a microscope and with the image analysis technique (determining the shape factor among other parameters). Image analysis was also applied to the evaluation of abrasive wear resistance of the coatings using a ball wear test. Their adhesion strength was tested with the scratch test method. The test results indicated that the change in Al-Si coating silicon crystal morphology (from large sharp edged and needle-like to smaller rounded particles) was heat induced, which, compared to the pre-treatment condition, lowered abrasion resistance values and produced a more uniform abrasion loss. This condition was regarded as more desirable in terms of maintaining the coating continuity during drawing, with no risk of spalling. It was also demonstrated that clad Al-Si coatings could provide an alternative solution for the widely used hot dip coatings on steel sheet.
9
Braeuer, Guenter, Hanno Paschke, Martin Weber, Bernd Arno Behrens, and Timur Yilkiran. "Surface Modifications for Optimized Forming Operations." Key Engineering Materials 611-612 (May 2014): 231–39. http://dx.doi.org/10.4028/www.scientific.net/kem.611-612.231.
Full textAbstract:
During forming operations the contact conditions relating to the surface of the tools, the intermediate coolant or lubricant and the hot work piece material are determining the material flow and the resulting wear. The possibilities for an optimization of the tool surfaces are aspects of various scientific activities of IST and IFUM and are subject of this paper. Tools typically made of hot working steel can be treated with different technologies in order to achieve wear resistant properties. First of all, the surface is mainly determined by its topography which is defined by the manufacturing method or applied finishing technology. This paper will give an overview to adjustable surface properties with additional conditioning methods like severe shot peening. The stabilization of the topography is a new approach to enhance the wear resistance of forming tools. Several models like the Abbott-Firestone graph are used in order to obtain suitable describing parameters such as the roughness-parameter sk. The development of skduring the running-in stage has a strong influence on the tool life which can be shown. A stabilization of the topographical conditions can enhance the service life of the tools. It will be shown, that this is possible by applying plasma diffusion treatments and thin film coatings by means of vacuum coating technologies.
10
Pruncu, C. I., Z. Azari, C. Casavola, and C. Pappalettere. "Characterization and Prediction of Cracks in Coated Materials: Direction and Length of Crack Propagation in Bimaterials." International Scholarly Research Notices 2015 (January 31, 2015): 1–13. http://dx.doi.org/10.1155/2015/594147.
Full textAbstract:
The behaviour of materials is governed by the surrounding environment. The contact area between the material and the surrounding environment is the likely spot where different forms of degradation, particularly rust, may be generated. A rust prevention treatment, like bluing, inhibitors, humidity control, coatings, and galvanization, will be necessary. The galvanization process aims to protect the surface of the material by depositing a layer of metallic zinc by either hot-dip galvanizing or electroplating. In the hot-dip galvanizing process, a metallic bond between steel and metallic zinc is obtained by immersing the steel in a zinc bath at a temperature of around 460°C. Although the hot-dip galvanizing procedure is recognized to be one of the most effective techniques to combat corrosion, cracks can arise in the intermetallic δ layer. These cracks can affect the life of the coated material and decrease the lifetime service of the entire structure. In the present paper the mechanical response of hot-dip galvanized steel submitted to mechanical loading condition is investigated. Experimental tests were performed and corroborative numerical and analytical methods were then applied in order to describe both the mechanical behaviour and the processes of crack/cracks propagation in a bimaterial as zinc-coated material.
11
Ahmed, Qadeer, Imran Nazir Qureshi, and Iftichar Us Salam. "Investigation of Hot Section (Nozzle Guiding Vane) Distress due to Interaction of Thermal Barrier Coatings with CMAS." Key Engineering Materials 778 (September 2018): 245–50. http://dx.doi.org/10.4028/www.scientific.net/kem.778.245.
Full textAbstract:
An investigation of distress of hot section nozzle guiding vane (NGV) was carried out. Thermal barrier coatings (TBCs) were applied to the components of gas turbine engines to operate at higher temperatures i.e. up to 1200°C. The cause of failure was hot corrosion of TBCs by chemical entities from atmosphere like oxides of Al, Ca, Si and Mg (CMAS). Source of CMAS was dust, which was ingested to airfoil engine components. Different techniques like scanning electron microscope, boroscopy, optical microscopy, X-ray Diffraction and optical emission spectroscopy were utilized to investigate the failure of nozzle guiding vanes.
12
Zhang, Jingyi, Jiaxin Liu, Yaqi Chen, Xiaochun Feng, and Zilai Sun. "Knowledge Mapping of Machine Learning Approaches Applied in Agricultural Management—A Scientometric Review with CiteSpace." Sustainability 13, no. 14 (2021): 7662. http://dx.doi.org/10.3390/su13147662.
Full textAbstract:
With the continuous development of the Internet of Things, artificial intelligence, big data technology, and intelligent agriculture have become hot topics in agricultural science and technology research. Machine learning is one of the core topics in artificial intelligence, and its application has penetrated every aspect of human social life. In modern agricultural intelligent management and decision making, machine learning plays an important role in crop classification, crop disease and insect pest prediction, agricultural product price prediction, and other aspects of management and decision-making processes in agriculture. To detect and recognize the latest research developing features in a quantitative and visual way, and based on machine learning methods in agricultural management, the authors of this paper used CiteSpace bibliometric methods to analyze relevant studies on the development process and hot spots. High-value references, productive authors, country and institution distributions, journal visualizations, research topics, and emerging trends were reviewed and analyzed. According to the keyword visualization and high-value references, machine learning approaches focus on sustainable agriculture, water resources, remote sensing, and machine learning methods. The research mainly focuses on six topics: learning technology, land environment, reference evapotranspiration, decision support systems for river geography, soil management, and winter wheat, while learning technology has been the most popular in recent years.
13
Parida, A. K., and K. P. Maity. "Finite Element Method and Experimental Investigation of Hot Turning of Inconel 718." Advanced Engineering Forum 16 (April 2016): 24–32. http://dx.doi.org/10.4028/www.scientific.net/aef.16.24.
Full textAbstract:
In the present work, a finite element modeling of hot turning has been carried out for predicting computationally the state variables like temperature distribution on chip surface and cutting forces in hot machining of Inconel 718. The hot turning operation has been carried out with L9 orthogonal design of experiment (DOE) with varying cutting speed, feed rate, heating temperature and constant depth of cut to analyze the responses. The model predicts the temperature distribution, cutting forces with and without heating. DEFORM 2D is applied for modeling hot turning simulation as similar as possible to the experimental result. Flow stress and input parameters should be modeled according to the actual machining conditions. The predicting results i.e. cutting forces and temperature distribution were partially validated with the experimental data.
14
Borsetto, Francesca, Andrea Ghiotti, and Stefania Bruschi. "Investigation of the High Strength Steel Al-Si Coating during Hot Stamping Operations." Key Engineering Materials 410-411 (March 2009): 289–96. http://dx.doi.org/10.4028/www.scientific.net/kem.410-411.289.
Full textAbstract:
To improve the low formability that HSS sheets exhibit at room temperature, innovative forming technologies like the hot stamping process are currently applied. In order to avoid scaling and decarburization during the heating step, metal sheets coated with a specially developed Al-Si coating are utilized. In the present work the coating characteristics in terms of morphology, surface roughness and tribological behaviour are investigated as function of heating temperature, holding time and cooling rate that are typical of hot stamping processes.
15
Aichinger, Peter, Christine DeBarbadillo, Ahmed Al-Omari, and Bernhard Wett. "‘Hot topic’ – combined energy and process modeling in thermal hydrolysis systems." Water Science and Technology 79, no. 1 (2019): 84–92. http://dx.doi.org/10.2166/wst.2019.018.
Full textAbstract:
Abstract The thermal hydrolysis process (THP) is applied to enhance biogas production in anaerobic digestion (AD), reduce viscosity for improved mixing and dewatering and to reduce and sterilize cake solids. Large heat demands for steam production rely on dynamic effects like sludge throughput, gas availability and THP process parameters. Here, we propose a combined energy and process model suitable to describe the dynamic behaviour of THP in a full-plant context. The process model addresses interactions of THP with operational conditions covered by the AD model obeying mass continuity. Energy conservation is considered in balancing and converting various energy species dominated by thermal heat and calorific energy. The combined energy and process model was then applied on the THP at Blue Plains advanced WWTP (DC Water) to analyse the process and assess potential energy optimizations. It was found that dynamic effects like mismatched steam production and consumption, temporary gas shortages and underloaded units are responsible for energy inefficiencies with losses in electricity-production up to 29%.
16
Mayberry, K. S., and T. K. Hartz. "Extension of Muskmelon Storage through the Use of Hot Water Life Treatment and Polyethylene Wraps." HortScience 27, no. 4 (1992): 324–26. http://dx.doi.org/10.21273/hortsci.27.4.324.
Full textAbstract:
Trials were conducted in California to evaluate techniques to extend storage life of netted muskmelons (Cucumis melo L.). The use of polyethylene bags, either as individual melon wraps or as liners for 18-kg commercial cartons, minimized water loss and associated deterioration of the fruit. Individual bags and carton liners were equally effective. A 3-minute dip in 60C water effectively checked surface mold development on wrapped fruits. Lower temperature and/or shorter exposure treatments were less effective. When applied in addition to hot water treatment, imazalil fungicide did not confer significant additional benefit. The combination of polyethylene bags and hot water treatment maintained high quality, marketable fruit for at least 28 days of storage at 3C,
17
Seitz, Franziska, Robert Schießl, and Detlev Markus. "Ignition by Hot Free Jets." Zeitschrift für Physikalische Chemie 231, no. 10 (2017): 1737–71. http://dx.doi.org/10.1515/zpch-2016-0914.
Full textAbstract:
Abstract This paper describes some of our experimental studies on the re-ignition caused by jets of hot gas that interact with unburned fuel/air mixtures. The problem is approached from two complementary sides: On the one hand, phenomenological studies are conducted, which ask for the conditions under which a hot jet may cause ignition. A dedicated experiment is described which allows to create well-controlled exhaust gas jets and ambient conditions. In this experiment, parameters influencing the ignition process are varied, and the dependence of jet behavior on these parameters (i.e. pressure ratio, diameter and length of the gap through which the exhaust gas has to pass before getting into contact with ambient fuel/air) is studied. In particular, the frequency of a jet causing re-ignition in the ambient gas is studied. On the other hand, we also perform studies which are more “analytical” in nature. These attempt a more in-depth understanding, by first decomposing the hot jet ignition phenomenon into the underlying physical processes, and then studying these processes in isolation. This approach is applied to measurements of mixture fraction fields. First, non reacting isothermal variable density jets are studied. Here, the density of the gas mixture varies as to mimic the density of hot exhaust gas at varying temperatures. A laser-based non-intrusive method is introduced that allows to determine quantitative mixture fraction fields; although applied here to cold jets only, the method is also applicable to hot jets. The results show the effect of turbulence on the mixing field in and at the free jet, and allow to derive quantities that describe the statistics of the turbulent jet, like probability density functions (PDFs) and geometrical size of fluctuations.
18
Liu, Jun, Mei Ling Guo, Ming Jen Tan, and Beng Wah Chua. "FEM Study of Superplastic-Like Forming of Ti-6Al-4V Alloy." Materials Science Forum 783-786 (May 2014): 607–12. http://dx.doi.org/10.4028/www.scientific.net/msf.783-786.607.
Full textAbstract:
A superplastic-like forming (SPLF) process involving the use of hot drawing along with blow forming is studied here. The hot drawing stage helps in enhancing the formability and in fast forming the metal sheet into a hollow shape with desired amount of material draw-in. During the blow forming stage, gas pressure was applied onto the pre-formed part to complete the forming process at a targeted strain rate. Ti-6Al-4V sheets have been successfully formed by this process at 800 °C in 16 min. In this paper, finite element modeling (FEM) was used to demonstrate the effects of each stage (hot drawing and blow forming) during SPLF. A plasticity model based on tensile test data was adopted as a material model for simulation. The pressure cycle which was predicted from the simulation has been used in the process to maintain the sheet forming at an average strain rate (e.g. 10-3, 5×10-4 and 10-4 s-1. Experimental measurements, i.e. material draw-in and thickness distribution, were used to compare and validate the results from simulations. The validated simulations have shown the capability of the model to be used for the forming process. The influences of varying process parameters, such as drawing stroke, blank-holder force, friction coefficient and pressure cycle, were investigated by the simulations. It was found that the punch geometry and drawing stroke played significant roles on the thickness uniformity of the final part, from which an optimized hot-drawing system that could result in minimum thinning has been designed by FEM.
19
Bayagoob and Bamaga. "Construction of Roller Compacted Concrete Dams in Hot Arid Regions." Materials 12, no. 19 (2019): 3064. http://dx.doi.org/10.3390/ma12193064.
Full textAbstract:
Roller compacted concrete (RCC) dams are attractive to many water and energy corporations around the world due to their ease in construction and low construction cost. The hydration of cement and the climatic changes on the convective boundaries are the two main heat sources for the temperature rise in the roller compacted concrete dams. Thus, changing the RCC placement schedule according to climate conditions might eliminate the problem of thermal cracks. In this research, the RCC dam method was applied in an arid region; the Bisha state in Saudi Arabia was chosen as a case study. We found that RCC dam technology can be applied safely with an alternative solution, like selecting a suitable placement schedule and reducing the placing temperature of facing at upstream and downstream sides to overcome the risk of thermal cracks.
20
Wieland, Michael, and Marion Merklein. "Characterization of Heat Transfer Coefficients of Tool Materials and Tool Coatings for Hot Stamping of Boron-Manganese Steels." Key Engineering Materials 438 (May 2010): 81–88. http://dx.doi.org/10.4028/www.scientific.net/kem.438.81.
Full textAbstract:
One characteristic of hot stamping of ultra high strength steels is the high wear rate of the used tools which leads to shorter tool life. Coatings improving wear resistance can increase the lifetime of the used tools but process relevant data such as the heat transfer capability of coated tool steels are missing. Within this paper the heat transfer capabilities of coated tool steels for the hot stamping processes are determined. Therefore different coating systems based on AlCrN are applied on the tool steels and the pressure dependent heat transfer coefficient is determined using process relevant conditions. As semi-finished blank the hot stamping steel 22MnB5 with an aluminum-silicon pre-coating is used. With respect to a finite element analysis of the forming operation of the hot stamping process the heat transfer coefficient represents an important input data for the process layout.
21
Mohamad, Khearia, Abduladhem Ali, and R. Nagrajan. "Fuzzy-Neural Control of Hot-Rolling Mill." Iraqi Journal for Electrical and Electronic Engineering 6, no. 2 (2010): 150–57. http://dx.doi.org/10.37917/ijeee.6.2.11.
Full textAbstract:
This paper deals with the application of Fuzzy-Neural Networks (FNNs) in multi-machine system control applied on hot steel rolling. The electrical drives that used in rolling system are a set of three-phase induction motors (IM) controlled by indirect field-oriented control (IFO). The fundamental goal of this type of control is to eliminate the coupling influence though the coordinate transformation in order to make the AC motor behaves like a separately excited DC motor. Then use Fuzzy-Neural Network in control the IM speed and the rolling plant. In this work MATLAB/SIMULINK models are proposed and implemented for the entire structures. Simulation results are presented to verify the effectiveness of the proposed control schemes. It is found that the proposed system is robust in that it eliminates the disturbances considerably.
22
Weller, R., M. M. Bateson, B. K. Heimbuch, E. D. Kopczynski, and D. M. Ward. "Uncultivated cyanobacteria, Chloroflexus-like inhabitants, and spirochete-like inhabitants of a hot spring microbial mat." Applied and Environmental Microbiology 58, no. 12 (1992): 3964–69. http://dx.doi.org/10.1128/aem.58.12.3964-3969.1992.
Full text
23
Fang, P. H., and J. H. Kinnier. "Apparatus for low-temperature growth of diamond-containing films." Journal of Materials Research 4, no. 5 (1989): 1243–45. http://dx.doi.org/10.1557/jmr.1989.1243.
Full textAbstract:
In current processes of diamond growth, the substrate temperature is in general around 600–900 °C. In the case of diamond-like carbon, the substrate temperature is lower, around 25–200 °C. There are many superior properties of diamond compared with diamond-like carbon; however, the high temperature requirement to grow diamond precludes many technologically important substrate materials such as zinc sulfide for an infrared window or electronic devices on which protective diamond layers are to be coated. The present approach is a hot filament DC glow discharge of hydrocarbon gases. A graphite hot filament cathode is inserted in a discharge cylinder tube anode. The discharge voltage is in the range of 50 to 250 volts at a methane gas pressure of about 100 microns. A negative biased voltage of 100 volts is applied between the cathode and the substrate. A magnetic field of 1 kG is applied near the cathode-anode assembly. At a substrate temperature of 200–400 °C, the deposited film on silicon crystal is confirmed by an electron diffraction pattern to consist of microcrystalline diamond.
24
Albiñana, Virginia, Guillermo Giménez-Gallego, Angela García-Mato, et al. "Topically Applied Etamsylate: A New Orphan Drug for HHT-Derived Epistaxis (Antiangiogenesis through FGF Pathway Inhibition)." TH Open 03, no. 03 (2019): e230-e243. http://dx.doi.org/10.1055/s-0039-1693710.
Full textAbstract:
AbstractHereditary hemorrhagic telangiectasia (HHT) is a vascular dysplasia characterized by recurrent and spontaneous epistaxis (nose bleeds), telangiectases on skin and mucosa, internal organ arteriovenous malformations, and dominant autosomal inheritance. Mutations in Endoglin and ACVRL1/ALK1, genes mainly expressed in endothelium, are responsible in 90% of the cases for the pathology. These genes are involved in the transforming growth factor-β(TGF-β) signaling pathway. Epistaxis remains as one of the most common symptoms impairing the quality of life of patients, becoming life-threatening in some cases. Different strategies have been used to decrease nose bleeds, among them is antiangiogenesis. The two main angiogenic pathways in endothelial cells depend on vascular endothelial growth factor and fibroblast growth factor (FGF). The present work has used etamsylate, the diethylamine salt of the 2,5-dihydroxybenzene sulfonate anion, also known as dobesilate, as a FGF signaling inhibitor. In endothelial cells, in vitro experiments show that etamsylate acts as an antiangiogenic factor, inhibiting wound healing and matrigel tubulogenesis. Moreover, etamsylate decreases phosphorylation of Akt and ERK1/2. A pilot clinical trial (EudraCT: 2016–003982–24) was performed with 12 HHT patients using a topical spray of etamsylate twice a day for 4 weeks. The epistaxis severity score (HHT-ESS) and other pertinent parameters were registered in the clinical trial. The significant reduction in the ESS scale, together with the lack of significant side effects, allowed the designation of topical etamsylate as a new orphan drug for epistaxis in HHT (EMA/OD/135/18).
25
Wang, Ya Jun. "A Summary of Research on the Linux Operating System." Advanced Materials Research 705 (June 2013): 565–68. http://dx.doi.org/10.4028/www.scientific.net/amr.705.565.
Full textAbstract:
As the fastest growing operating system, Linux is applied in broader areas, and more and more people start to use Linux operating system. In allusion to the hot issues like Linux and UnixLinux and free softwares, Linux kernelLinux DistroLinux and embedded systemLinux and WindowsLinux teaching, the research results have been summarized in the article.
26
Socas-Navarro, H., and A. Asensio Ramos. "Exploring the Sun’s upper atmosphere with neural networks: Reversed patterns and the hot wall effect." Astronomy & Astrophysics 652 (August 2021): A78. http://dx.doi.org/10.1051/0004-6361/202140424.
Full textAbstract:
We have developed an inversion procedure designed for high-resolution solar spectro-polarimeters, such as those of Hinode and the DKIST. The procedure is based on artificial neural networks trained with profiles generated from random atmospheric stratifications for a high generalization capability. When applied to Hinode data, we find a hot fine-scale network structure whose morphology changes with height. In the middle layers, this network resembles what is observed in G-band filtergrams, but it is not identical. Surprisingly, the temperature enhancements in the middle and upper photosphere have a reversed pattern. Hot pixels in the middle photosphere, possibly associated with small-scale magnetic elements, appear cool at the log τ500 = −3 and −4 level, and vice versa. Finally, we find hot arcs on the limb side of magnetic pores. We interpret them as the first piece of direct observational evidence of the “hot wall” effect, which is a prediction of theoretical models from the 1970’s.
27
Kashyap Jagadeesh, Madhu, Sagarika Rao Valluri, Vani Kari, Katarzyna Kubska, and Łukasz Kaczmarek. "Indexing Exoplanets with Physical Conditions Potentially Suitable for Rock-Dependent Extremophiles." Life 10, no. 2 (2020): 10. http://dx.doi.org/10.3390/life10020010.
Full textAbstract:
The search for different life forms elsewhere in the universe is a fascinating area of research in astrophysics and astrobiology. Currently, according to the NASA Exoplanet Archive database, 3876 exoplanets have been discovered. The Earth Similarity Index (ESI) is defined as the geometric mean of radius, density, escape velocity, and surface temperature and ranges from 0 (dissimilar to Earth) to 1 (similar to Earth). The ESI was created to index exoplanets on the basis of their similarity to Earth. In this paper, we examined rocky exoplanets whose physical conditions are potentially suitable for the survival of rock-dependent extremophiles, such as the cyanobacteria Chroococcidiopsis and the lichen Acarospora. The Rock Similarity Index (RSI) is first introduced and then applied to 1659 rocky exoplanets. The RSI represents a measure for Earth-like planets on which physical conditions are potentially suitable for rocky extremophiles that can survive in Earth-like extreme habitats (i.e., hot deserts and cold, frozen lands).
28
Satsumoto, Yayoi, Kinzo Ishikawa, and Masaaki Takeuchi. "Evaluating Quasi-Clothing Heat Transfer: A Comparison of the Vertical Hot Plate and the Thermal Manikin." Textile Research Journal 67, no. 7 (1997): 503–10. http://dx.doi.org/10.1177/004051759706700705.
Full textAbstract:
In earlier work, we used a vertical hot plate as a simple model of the human body, and it was important to determine whether or not our experimental results from the hot plate could really be applied to the body. Recently, thermal manikins have emerged as substitutes for the body, and this work tests whether or not the vertical hot plate can still be used as the substitute. Experiments are done with the abdominal segment of the thermal manikin and the vertical hot plate to investigate the effect of clothing construction factors like the size of air spaces and opening designs, open or closed, on quasi-clothing heat transfer. Results from the two methods agree with each other only when the size of the air space is 20 mm, and it is difficult to reproduce a setup with a precisely sized air space for the thermal manikin. The manikin has more experimental errors than the vertical hot plate, as clarified by results of the vertical hot plate model and the theoretical analysis that follows. The heat transfer coefficient of the open garment case is larger than that for the closed garment case, with proximity to the opening. In addition, the difference in the heat transfer coefficient is largest when the size of the air space is 10 mm. We have verified that the results of the vertical hot plate are helpful in understanding the results of the thermal manikin. Moreover, if the investigation of the effect of certain physical factors on heat transfer of quasi-clothing is performed analytically, it is not absolutely necessary to use a human model of actual dimensions, like a thermal manikin.
29
ZHANG, ZHI-QIANG. "Continued growth of Systematic and Applied Acarology, and hot spots and shelf life of new species in 2013." Systematic and Applied Acarology 19, no. 1 (2014): 110. http://dx.doi.org/10.11158/saa.19.1.9.
Full text
30
Shakila, R. Jeya, B. Edwin Raj, and N. Felix. "Quality and safety of fish curry processed by sous vide cook chilled and hot filled technology process during refrigerated storage." Food Science and Technology International 18, no. 3 (2012): 261–69. http://dx.doi.org/10.1177/1082013211415177.
Full textAbstract:
Fish curry, a traditional Indian dish was prepared from farmed fish Cobia ( Rachycentron canadum), packaged by two different cook-chill processes namely, sous vide cook chilled and hot filled technology and held at 2 °C. Biochemical composition revealed that fish curry contained 5% protein and 6% fat. Omega-3 fatty acids, eicosapentaenoic acid (EPA) retained 55.44% while docosahexaenoic acid (DHA) retained 29% during cook-chilling process. The major fatty acids in fish curry were C18:2, C12:0, C16:0 and C18:1. Shelf-life of sous vide cook chilled and hot filled technology processed fish curry were 8 and 12 weeks, respectively. Total bacterial counts were detected after 4 weeks and 12 weeks in sous vide cook chilled and hot filled technology processes, respectively. Total staphylococci were detected in sous vide cook chilled and hot filled technology processed cobia fish curry after 4 and 12 weeks, respectively. Total bacilli, anaerobic sulfite reducing clostridia, Salmonella, and lactic acid bacteria were absent. Hot filled technology process was more efficient and could be applied for chilled fish curry preservation for 12 weeks without any safety problems.
31
Trebejo, I., and D. J. Midmore. "Effect of water stress on potato growth, yield and water use in a hot and a cool tropical climate." Journal of Agricultural Science 114, no. 3 (1990): 321–34. http://dx.doi.org/10.1017/s0021859600072713.
Full textAbstract:
SUMMARYIrrigation experiments are described in which three cultivars were subjected to varying degrees of drought in the cool and hot seasons in Lima, Peru. The most severely draughted plots received, on average, 20% and 35% less water than the well-watered control plots, resulting in 20% and 52% yield reduction in the cool and hot seasons, respectively. Average fresh tuber yields ranged, according to cultivar, from 1370 to 2450 g/m2 in the summer and from 2800 to 4450 g/m2 in the winter, with tuber dry-matter percentages of c. 17% and 20%, respectively. The production of total dry matter per unit intercepted solar radiation (the conversion coefficient, estimated from the slope of the regression, in g/MJ) was markedly less during the hot season but, regressed on a photo thermal quotient ∑((MJ/m2)/(°C > 4·5°C)), a common relationship across seasons was achieved. The conversion coefficient was less in draughted than in well-watered plots, more so in the hot season.Crop transpirational and evapotranspirational water use efficiencies (WUE) were less in the hot season largely because of the greater saturation vapour-pressure deficit. However, because of greater harvest index (HI) and more-efficient interception of solar radiation per unit of applied water by draughted than by well-watered plots in the summer, and despite a lower conversion coefficient, draughted plots showed greater WUE. Based on total water applied and final fresh tuber yields, WUE was, on average, 3·9 and 12·4 kg/m3 in the hot and cool seasons, respectively, values close to the extremes of the range of published values. Low HI in the summer was, to some extent, responsible for this seasonal difference.
32
Reip, Carl Peter, Christian Klinkenberg, Long Chang Tong, and Pavel Hora. "Potential of Hot Rolled Dualphase Steel from Compact Strip Production CSP® in Automotive Applications." Materials Science Forum 706-709 (January 2012): 2278–83. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.2278.
Full textAbstract:
Industrial thin slab casting and direct rolling processing started in 1989 with the world’s first CSP® plant at Crawfordsville (USA). Since this time CSP® and competing thin slab casting and direct rolling concepts have been developed to a standard process for hot strip production [1]. Typical features of the CSP® process are the homogeneous structural and mechanical properties all along the strip. Direct hot rolling of thin slabs may be followed by a well defined cooling pattern to produce hot strip from high strength multiphase steel, like dualphase (DP) grades, on the runout table. These steel grades are characterized by a favorable combination of strength and ductility based on hard martensitic particles embedded in a ductile ferritic matrix. This paper highlights the mechanical properties of hot rolled DP steel from CSP® production. To this purpose, multiple tests and modeling have been applied to determine e.g. r-values, forming limit curves and yield locus. In addition, forming simulation as well as laboratory and industrial deep drawing tests have been performed.
33
Cha, Myoung-Jin, Byung-Su Kim, and Soo-Jin Cho. "Headache Education and Assessment for Migraineurs." Journal of the Korean Neurological Association 38, no. 3 (2020): 169–74. http://dx.doi.org/10.17340/jkna.2020.3.1.
Full textAbstract:
Migraine is a common neurologic disorder with recurrent headache and variable accompanying symptoms. Patients with migraine have suffered by an enormous burden on daily life and impairment of quality of life (QoL), but migraine is still underdiagnosed and undertreated. For early and better diagnosis and treatment of migraine, headache education and instruments for evaluation of headache outcomes including QoL and disability are essential. Nonpharmachological treatment like cognitive-behavior therapy, mindfulness-based stress reduction, lifestyle modification and trigger avoidance, biofeedback, relaxation training can reduce frequency of pain, disability, so headache education might be helpful. Headache diary and instruments for evaluation of QoL, disability and comorbidity like Migraine Disability Assessment Scale (MIDAS), Headache Impact Test-6 (HIT-6), Migraine-Specific Quality of Life Questionnaire (MSQ) are useful tools to decide plans of treatment. When nonpharmachological treatment and headache education are well applied and evaluation of the QoL and disability are reflected, it will help improve the quality of life for migraine patients.
34
Brinksmeier, Ekkard, Ralf Gläbe, and Jen Osmer. "Diamond Cutting of FeN-Layers on Steel Substrates for Optical Mould Making." Key Engineering Materials 438 (May 2010): 31–34. http://dx.doi.org/10.4028/www.scientific.net/kem.438.31.
Full textAbstract:
The mass production of glass or plastic components by replication techniques, like hot pressing or injection moulding, requires inserts made of temperature resistant and hard materials. Generating an optical surface finish in these materials is time consuming and difficult. By using thermo-chemically treated steels as mould materials diamond cutting processes generating high form accuracies and low surface roughness can be applied without significant tool wear.
35
Votava, Jiří, Martin Kotus, and Vojtěch Kumbár. "Passivation of Zinc Coatings by Inhibition Chrome-Based Systems." Advanced Materials Research 1059 (December 2014): 67–73. http://dx.doi.org/10.4028/www.scientific.net/amr.1059.67.
Full textAbstract:
The anticorrosion resistance of metal (inorganic) coatings is defined by the system of anode and cathode protection. As zinc coatings do not load the environment in such an extent like organic paint systems, current trend is to maximally prolong the service life of a zinc coating. This paper is focused on analysis of the speed of corrosion degradation of zinc coatings. The individual samples were prepared by the method of hot-dipping and galvanizing. Inhibition systems were applied only to electrolyte-applied zinc coating. There were prepared three different passivating methods: (1) slim-layer passivation with the content of Cr (III), (2) slim-layer passivation with the inhibitor Cr (VI) and (3) thick-layer passivation with Cr (III). The thickness of anticorrosion coatings has been measured by both destructive and non-destructive methods. The weight of the applied anticorrosion substrate was measured in compliance with the ČSN EN ISO 3892 standard. Ductile characteristics were analysed according to the ČSN EN ISO 1519 standard. The total evaluation of anticorrosion resistance was processed according to the ČSN EN ISO 9227 standard (salt-spray test). Based on the results of corrosion tests, the individual coatings can be analysed and their corrosion resistance can be evaluated. The service life of the zinc coating can be prolonged by sealing off the zinc coating by an appropriate inhibitor which supports the self-healing effect of the whole anticorrosion substrate.
36
Prysyazhnyuk, V. "The treatment of animals in Galicia in the middle ages." Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 22, no. 100 (2020): 32–35. http://dx.doi.org/10.32718/nvlvet10006.
Full textAbstract:
Surgical diseases. At head injuries was carried out bloodletting from the jugular vein and infusion into the nasal cavity of chopped horseradish and citrus, mixing with wine, to cause nasal discharge, the outflow of which had a positive influence on the course of the disease. Surgical procedures in the oral cavity of a horse. Sharp teeth are blunted if you insert an iron bar between them. When chewing a bar, the horse must break its sharp ends. Wolf teeth or fangs can be removed with a chisel. The salivary glands under the tongue was called tuberculosis which in some cases were removed surgically. The wounds of the tongue were called “mucus”, lubricated with quicklime, mercury, honey. In cases of laminitis, the reasons for which could be wind, rye, water, treatment was based on blood from the jugular vein, tail, cheeks, limbs or from the veins of the palate, with the simultaneous use of herbal remedies such as asparagus, laxatives (cleansers), and bathing the limbs in cold water. When sitting (something like steaming from the saddle) were used wraps with vinegar, clay or washing with the above means. In cases of abdominal edema were used wet and warm compresses using a harness. When the scapula was damaged, a massage with rubbing a mixture of bean oil, turpentine and olive oil was effective. If there were cracks in the bone, the place on the other side of the crack was burned with hot iron, and in addition to wrapping with the roots of plants, leaves and bread, a bandage of thin boards and a bandage was applied. In case of a broken bone – a calm horse was given a permanent bandage and a bandage with pre-lubrication of the limbs with fat. Disease of shuttle bones. Were burned with iron and covered with herbs, or lubricated with ointment, consisting of resin, vegetable oil and bean oil. Phlegmons and congestive edema of the extremities were treated by wrapping a mixture of poppy oil, including bloodletting from this limb, or massage with the simultaneous use of substances such as: nettle root or cumin, ground with honey and flour. Inflammation of the tendons was called a clogged vein, wrapping a mixture of onions and garlic was recommended for medicinal purposes. The pile (lump) “called a dog's hair” has been treated with human feces for two centuries. Dislocations and subdislocations. After directing the bone to the starting position, a mixture of vinegar, honey and tire was used. Rub, peel off the hoof (mutilation of the hoof, resulting from the attack of one limb on the other). After cutting the mutilated (wounded) place and cleaning the wound by rinsing with oil or vinegar it is necessary to cover the damage with melted wax, fat or resin. Cut the damaged horn especially when there is suppuration. When a horseshoe nail is driven deep into the hoof during shoeing, the horseshoe must be removed, open the sole in the area of the disease, and in order to allow the leakage of pus (exudate) to wash the wound with oil. To prevent further contamination of the wound, fill it with resin. Penetration of alien bodies into the hoof from below. This can happen when a horse steps on a sharp object. Were treated as described above. The so-called Spartan shoes were put on the hoof, which is still in common use today. When there was a suspicion that there was exudate in the wall of the hoof, to determine where, you need to moisten the horn of the hoof with water. The place that became dry the fastest due to the rising temperature was the most suitable for opening and the possibility of exudate. The curvature that most often occurs in barefoot unshod horses, the horn was removed with a knife up to the soft tissues of the hoof, the wound was tapenaded by wetting the tampons with vinegar, honey, or impregnate them with salt or lime, it is impossible to use alum in the final period of treatment. Granulation tissue exacerbation was treated with caustic agents such as copper green or ferrous sulfate. Ulcers were opened with steamed iron or accelerated their natural opening with the help of Spanish flies. After opening, they were covered with powdered sulfur or bread with salt. Lubricate the edema with wine yeast or grated burdock root, and knife wounds were tamponade with a saturated mixture of resin, sulfur, vinegar. Bruises on the body of animals were lubricated the damaged areas with ointment from nettle root and fat, and the removal of exterior bodies from gunshot wounds was carried out by induction of wound suppuration with mercury ointment, alkali. Iron particles embedded in the wound, tried to remove with a magnet. Cluster of hair – caused acceleration ointment, consisting of roundworms, bees and oil, and the intensive molting was facilitated by smearing the horse's fur with his own blood. White spots, varieties on the corresponding horse hair were treated through burns of this place with hot dough mixed with mustard and strong vinegar. It should be noted that one of the most common surgical procedures was bloodletting and it is from the various veins of the horse's body. Not only for internal or surgical diseases, but also as a means of disease prevention was used. Eye diseases, namely: swollen eyes with flowing tears, under this name should be understood as a series of inflammatory conditions of both eyes and eyelids. Treatment – blood from a vein over the orbits, as well as well-washed eyes with well water. In endosperm, it was recommended to inject powdered substances such as feces, pepper, ginger, feathers, lard, alum into the eye.
37
Yoon, Duk Jae, Kyoung Hoan Na, and Chong Du Cho. "The Microstructure of AZ 31 Magnesium Alloy by Forward Extrusion with Various Extrusion Parameters." Materials Science Forum 539-543 (March 2007): 1818–23. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.1818.
Full textAbstract:
Samples of AZ31 wrought magnesium alloy are hot extruded into forward direction with various initial billet temperatures and extrusion ratios (ERs). Usually the insufficient room temperature formability of magnesium wrought alloys makes processing steps like rolling, extrusion etc. difficult, thus limiting their use for rolled or wrought parts. However, in this paper experiment is preformed under the hot forward extrusion process for AZ31 wrought magnesium alloy with different important parameters. Major process parameters such as punch speed, billet temperatures and ERs are considered and applied to the hot extrusion process with a constant value of the die land. The influence of different billet temperatures and ERs on the hot forward extrusion process is investigated and analyzed in terms of the grain flow, microstructure, grain size and hardness distribution of formed part for magnesium and Mg alloy. Maximum forming loads for various main parameters is tackled and checked to know the optimum forming load for hot forward extrusion process. Also finest grain sizes and an inhomogeneous microstructure of extruded parts seem to occur near the die land of tool-set due to the anisotropic plastic behavior during the hot extrusion process. Extrusion properties such as extrusion load, grain size, micro hardness and surface quality are compared between the main parameters during the hot forward extrusion process. In addition it is easily disclosed from the experiment results that the die land designed for safe tool-set plays a key role in improving the mechanical properties of formed product during hot forward extrusion process for AZ31 magnesium alloy.
38
Chen, Lei, Yong Xiang Zhao, and Yang Bing. "Fatigue S-N Relations of the Cast Steel for Chinese Railway Rolling Wagon Bogie Frames." Advanced Materials Research 118-120 (June 2010): 181–85. http://dx.doi.org/10.4028/www.scientific.net/amr.118-120.181.
Full textAbstract:
Fatigue S-N relations are investigated experimentally on the grade B cast steel for Chinese railway freight car bogie frames. Group test method was employed. Results reveal that the fatigue cracks were initiated from the material cast shrinking cavities with hot ties. Distinct fatigue striations, river-like flowers, and second cracks appeared on the fracture surface in perpendicular to the fatigue crack path. Lots of dimples in the transient fracture district indicate that present material is ductile. Considering both the scattered S-N relations and no fatigue limits under variable loads, the S-N relations are measured probabilistically in terms of continuous declined probabilistic S-N curves including super-long life regime (SLLR) of >107 cycles. Affordable novel approach, i.e. concurrent probability extrapolation method, was applied. The test S-N data in mid-long life regime (MLLR) and conventional fatigue limits are used. The curves are established by extrapolating the conventional S-N curves crossing the fatigue limits, in a concurrent probability manner, into the SLLR. Appropriate measurements have been given for the test data of the present material.
39
Ikram, Awais, Muhammad Awais, Richard Sheridan, et al. "Spark Plasma Sintering as an Effective Texturing Tool for Reprocessing Recycled HDDR Nd-Fe-B Magnets with Lossless Coercivity." Metals 10, no. 3 (2020): 418. http://dx.doi.org/10.3390/met10030418.
Full textAbstract:
The low-pressure hot-deformation methodology was applied to reprocess the nanocrystalline hydrogenation–disproportionation–desorption–recombination (HDDR) Nd-Fe-B powders from end-of-life (EOL) permanent magnets’ waste to determine the mechanism of texture development and the resultant improvement in remanence (and BHmax) in the recycled material. Both the hot-pressed and hot-deformed magnets produced via spark plasma sintering (SPS) were compared in terms of their magnetic properties with respect to forging pressures. Also, a comparison was established with the microstructure to cite the effectiveness of texture development at low deformation rates and pressures which is pivotal for retaining high coercivity. The hot-pressed magnets maintain the high coercivity (better than 100%) of the original recycled powder due to the control of SPS conditions. The hot deformation pressure was varied from 100–150 MPa at 750 °C processing temperature to identify the optimal texture development in the sintered HDDR Nd-Fe-B magnets. The effect of post-hot-deformation thermal treatment was also investigated, which helped in boosting the overall magnetic properties and better than the recycled feedstock. This low-pressure hot deformation process improved the remanence of the hot-pressed magnet by 11% over the starting recycled powder. The Mr/MS ratio which was 0.5 for the hot-pressed magnets increased to 0.64 for the magnets hot-deformed at 150 MPa. Also, a 55% reduction in height of the sample was achieved with the c-axis texture, indicating approximately 23% higher remanence over the isotropic hot-pressed magnets. After hot deformation, the intrinsic coercivity (HCi) of 960 kA/m and the remanence (Br) value of 1.01 T at 150 MPa is indicative that the controlled SPS reprocessing technique can prevent microstructure related losses in the magnetic properties of the recycled materials. This route also suggests that the scrap Nd-Fe-B magnets can be treated with recoverable magnetic properties subsequently via HDDR technique and controlled hot deformation with a follow-up annealing.
40
Notardonato, Ivan, Sergio Passarella, Alessia Iannone, et al. "Comparison of Two Extraction Procedures, SPE and DLLME, for Determining Plasticizer Residues in Hot Drinks at Vending Machines." Processes 9, no. 9 (2021): 1588. http://dx.doi.org/10.3390/pr9091588.
Full textAbstract:
This paper would like to compare two extraction procedures for analyzing phthalates (PAEs) in hot drinks collected at vending machines, usually coffee and tea. The two analytical procedures are based on Solid Phase Extraction (SPE) using C18 cartridge and on dispersive liquid-liquid microextraction (DLLME) assisted by ultrasound and vortex for improving the dispersion mechanically, with each followed by a routinary analytical method such as GC-FID. Seven phthalates (DMP, DEP, DiBP, DBP, DEHP, DOP, DDP) have been analyzed and determined. All the analytical parameters (i.e., recovery, limit of detection, limit of quantification, enrichment factors, repeatability, reproducibility) have been investigated and discussed, as has the matrix effect. The entire procedure has been applied to hot drink matrices, e.g., coffee, decaffeinated coffee, barley coffee, ginseng coffee and tea.
41
Al-Momani, Mohammad Musa. "Cluster mechanism for hot data storage in HBase system." Indonesian Journal of Electrical Engineering and Computer Science 14, no. 3 (2019): 1420. http://dx.doi.org/10.11591/ijeecs.v14.i3.pp1420-1424.
Full textAbstract:
The evolution in different areas like e-business contributed to increase the number of data. So, a scalable database is required to accommodate a large number of data. Moreover, this data could be important and the number of accessing for reading or writing operations can make a pressure in some servers more than others, this pressure called unbalanced accessing. This will be achieved if a system that guarantees the distribution of this important data in useful form is used, because the pressure can causes a delay. Accordingly, when we design a multi storage node to keep this data, the pressure will transfer from a server to another. So, the proposed system searched for a satisfied solution to distribute all the users on the servers in a useful way to detect any mistake or repeating updating operation data by using identification feature. This method is applied on Hbase and called Clusterization.
42
Zhang, Fu Ming. "Research and Application of the New Technologies on Blast Furnace at Shougang Qiangang Plant." Advanced Materials Research 402 (November 2011): 151–55. http://dx.doi.org/10.4028/www.scientific.net/amr.402.151.
Full textAbstract:
In recent years great progress is made in technical equipment of large blast furnace in China. A series of new process, technologies and equipment, integrated and developed on our own, are applied on newly built large blast furnaces and have been proved to be highly effective. After more than 20 years’ development and innovation of the bell-less top equipment designed and developed on our own, it has reached the advanced level in the world in terms of equipment reliability and service life; fully-dry impulse bag filter dedusting technology of BF gas, which is also developed on our own, has gained technical breakthroughs in terms of optimized system design, gas temperature control, pneumatic conveying of dedusting fines; the integrated innovative high-efficiency long-life high-temperature technology, through applying high-temperature preheating technology of combustion air, improving heat transfer efficiency of hot blast stove and optimizing structure of the hot blast stove system, enables the blast temperature to reach 1250°C with BF gas as fuel.
43
Morse, Solon F., Carl W. Dick, Bruce D. Patterson, and Katharina Dittmar. "Some Like It Hot: Evolution and Ecology of Novel Endosymbionts in Bat Flies of Cave-Roosting Bats (Hippoboscoidea, Nycterophiliinae)." Applied and Environmental Microbiology 78, no. 24 (2012): 8639–49. http://dx.doi.org/10.1128/aem.02455-12.
Full textAbstract:
ABSTRACTWe investigated previously unknown associations between bacterial endosymbionts and bat flies of the subfamily Nycterophiliinae (Diptera, Streblidae). Molecular analyses revealed a novel clade ofGammaproteobacteriainNycterophiliabat flies. This clade was not closely related toArsenophonus-like microbes found in its sister genusPhalconomusand other bat flies. High population infection rates inNycterophiliaacross a wide geographic area, the presence of the symbionts in pupae, the general codivergence between hosts and symbionts, and high AT composition bias in symbiont genes together suggest that this host-symbiont association is obligate in nature and ancient in origin. SomeNycterophiliasamples (14.8%) also containedWolbachiasupergroup F (Alphaproteobacteria), suggesting a facultative symbiosis. Likelihood-based ancestral character mapping revealed that, initially, obligate symbionts exhibited association with host-specificNycterophiliabat flies that use a broad temperature range of cave environments for pupal development. As this mutualism evolved, the temperature range of bat flies narrowed to an exclusive use of hot caves, which was followed by a secondary broadening of the bat flies' host associations. These results suggest that the symbiosis has influenced the environmental tolerance of parasite life history stages. Furthermore, the contingent change to an expanded host range ofNycterophiliabat flies upon narrowing the ecological niche of their developmental stages suggests that altered environmental tolerance across life history stages may be a crucial factor in shaping parasite-host relationships.
44
JianPing, Jing, Meng Guang, Sun Yi, and Xia SongBo. "A Continuum Damage Mechanics Model on Creep Rupture Life Assessment of a Steam Turbine Rotor." Journal of Engineering for Gas Turbines and Power 128, no. 1 (2005): 173–77. http://dx.doi.org/10.1115/1.1924483.
Full textAbstract:
A nonlinear continuum damage mechanics model is proposed to assess the high temperature creep life of a steam turbine rotor, in which the effect of mean stress is taken into account and the damage is accumulated nonlinearly. The model is applied to a 300 MW steam turbine under hot start operation. The results are compared with those from the linear accumulation theory that is dominant in the creep life assessment of steam turbine rotors at present. The comparison results show that the nonlinear continuum damage mechanics model describes the accumulation and development of damage better than the linear accumulation theory.
45
van der Meer, Marcel T. J., Stefan Schouten, Jaap S. Sinninghe Damsté, Jan W. de Leeuw, and David M. Ward. "Compound-Specific Isotopic Fractionation Patterns Suggest Different Carbon Metabolisms among Chloroflexus-Like Bacteria in Hot-Spring Microbial Mats." Applied and Environmental Microbiology 69, no. 10 (2003): 6000–6006. http://dx.doi.org/10.1128/aem.69.10.6000-6006.2003.
Full textAbstract:
ABSTRACT Stable carbon isotope fractionations between dissolved inorganic carbon and lipid biomarkers suggest photoautotrophy by Chloroflexus-like organisms in sulfidic and nonsulfidic Yellowstone hot springs. Where co-occurring, cyanobacteria appear to cross-feed Chloroflexus-like organisms supporting photoheterotrophy as well, although the relatively small 13C fractionation associated with cyanobacterial sugar biosynthesis may sometimes obscure this process.
46
Bonoli, Alessandra, Emanuela Di Fusco, Sara Zanni, Ilaria Lauriola, Valentina Ciriello, and Vittorio Di Federico. "Green Smart Technology for Water (GST4Water): Life Cycle Analysis of Urban Water Consumption." Water 11, no. 2 (2019): 389. http://dx.doi.org/10.3390/w11020389.
Full textAbstract:
The increasing scarcity of water is encouraging strategies in water saving and urban water management systems devoted to reducing natural resource consumption and environmental impact. At household and urban scales, there is an increasing interest in onsite greywater and non-potable water reuse systems in order to improve water availability. In this framework, the project GST4Water funded by the European Union (EU) under the POR-FESR 2014–2020 Program of Emilia-Romagna Region, has been developed with the aim to implement water consumption monitoring systems, to define solutions for greywater reuse, and to develop tools for environmental sustainability evaluation applied to water systems. The present study focuses on this last goal, performing a life cycle assessment of the solutions optimized at a district level. In particular, six different scenarios are compared, starting from two models considering traditional water supply together with or without energy consumption related to hot water generation, and five additional models related with different assumptions in terms of greywater recovery systems, and energy and hot water production, at varying percentages of renewable and photovoltaic energy supply. Finally, an evaluation of the return time of environmental investment is carried out, based on the results obtained through the scenario analysis.
47
., Divya, and Rutash Mitta. "Coatings: A Review." Asian Journal of Engineering and Applied Technology 7, no. 2 (2018): 143–46. http://dx.doi.org/10.51983/ajeat-2018.7.2.899.
Full textAbstract:
To protect and safeguard a material from degradation, another material having better properties is applied on the base metal. The application of a coated material can propel the increase in life span, wear resistance or oxidation resistance of a material. Thermal spray coatings play an important role to protect the material from hot corrosion, erosion and wear. As it protects the material from this hazardous environment, it is helpful to increase service life of the material in any surrounding environment. This review paper presents the results of previous work done by different authors in the field of coating.
48
Brinksmeier, Ekkard, and Jen Osmer. "Precision Mould Making – From Macro to Micro." Key Engineering Materials 447-448 (September 2010): 1–8. http://dx.doi.org/10.4028/www.scientific.net/kem.447-448.1.
Full textAbstract:
Nowadays several qualified technologies have been established for the manufacturing of precision moulds. The fields of application can mainly be divided into moulds for non-optical and optical components. For optical moulding inserts the development goes from basic rotational symmetric geometries to complex surfaces like steep aspheres and freeforms which can additionally be overlaid with microstructures. The moulded components require a figure accuracy in the (sub-) micrometer and surface roughness in the nanometer range while moulds for replication also need advanced materials with high surface integrity. Here, diamond machining processes, e.g. diamond turning and milling as well as precision grinding and polishing are necessary for the manufacturing of precision moulding inserts from various materials. Depending on the material and application of the applied part to be replicated different replication techniques are used like injection moulding of plastics, hot embossing and precision moulding of optical glasses. For non-optical applications the current technical progress is driven by miniaturized products which are typically produced in mass production by replication techniques like hot embossing or metal forming. Each of these processes requires specific properties of the mould. Therefore, the surface topography and tribological conditions are of particular importance.
49
Klinkenberg, Christian, Akhil Varghese, Christoph Heering, Olga Lamukhina, Uwe Grafe, and Kirill Tokmakov. "3rd Generation AHSS by Thin Slab Technology." Materials Science Forum 941 (December 2018): 627–32. http://dx.doi.org/10.4028/www.scientific.net/msf.941.627.
Full textAbstract:
Modern steel making and hot rolling processes like CSP® thin slab technology require precise data on casting and rolling behavior of the produced steel grades. Up today only few data is available for the latest generations of advanced high strength steel (AHSS) grades. AHSS have developed by 3 generations [1, 2]. 1st Generation AHSS as dual phase (DP), complex phase (CP), martensitic (MS) and transformation induced plasticity (TRIP) steel grades are currently applied in automotive industry. 2nd and 3rd Generation AHSS typically have elevated Mn-content as well as Al and Si content. High Mn-content of up to 30% seriously affects casting and forming properties of 2nd Generation AHSS. In particular, the large solidification range of more than 100 K prevents commercial production of these steel grades by continuous casting [3]. 3rd Generation AHSS with reduced Mn-content up to about 12% are currently under development [1-4]. Investigations have been carried out to assess the CSP® thin slab process for the production of such grades. To this purpose solidification and hot forming properties of different alloys having Mn-content up to 10% have been examined by thermodynamic calculations and laboratory testing by hot forming dilatometry. The achieved flow curves match figures achieved on a hot rolling mill.
50
Chudzik, Stanisław, and Waldemar Minkina. "An Idea of a Measurement System for Determining Thermal Parameters of Heat Insulation Materials." Metrology and Measurement Systems 18, no. 2 (2011): 261–74. http://dx.doi.org/10.2478/v10178-011-0008-2.
Full textAbstract:
An Idea of a Measurement System for Determining Thermal Parameters of Heat Insulation MaterialsThe article presents the prototype of a measurement system with a hot probe, designed for testing thermal parameters of heat insulation materials. The idea is to determine parameters of thermal insulation materials using a hot probe with an auxiliary thermometer and a trained artificial neural network. The network is trained on data extracted from a nonstationary two-dimensional model of heat conduction inside a sample of material with the hot probe and the auxiliary thermometer. The significant heat capacity of the probe handle is taken into account in the model. The finite element method (FEM) is applied to solve the system of partial differential equations describing the model. An artificial neural network (ANN) is used to estimate coefficients of the inverse heat conduction problem for a solid. The network determines values of the effective thermal conductivity and effective thermal diffusivity on the basis of temperature responses of the hot probe and the auxiliary thermometer. All calculations, like FEM, training and testing processes, were conducted in the MATLAB environment. Experimental results are also presented. The proposed measurement system for parameter testing is suitable for temporary measurements in a building site or factory.