Log in

Relevant bibliographies by topics / Pumping machinery / Journal articles

To see the other types of publications on this topic, follow the link: Pumping machinery.

Journal articles on the topic 'Pumping machinery'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 July 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Pumping machinery.'

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

Liu, Huiyong, and Qing Zhao. "Review on Energy Conservation of Construction Machinery for Pumping Concrete." Processes 11, no. 3 (2023): 842. http://dx.doi.org/10.3390/pr11030842.

Full text

Abstract:

The excessive consumption of fossil fuel, energy shortage and global warming along with environmental deterioration have increasingly become a global issue. In order to deal with the energy crisis, energy conservation has been developed and applied in vehicles and construction machineries, i.e., excavators, loaders and forklifts. Due to the shortcoming of low efficiency, high-energy consumption and bad exhaust, the energy conservation of construction machinery for pumping concrete is necessary and urgent. This paper aims to carry out a review on energy conservation of construction machinery fo

APA, Harvard, Vancouver, ISO, and other styles

2

TOWLER, ALFRED. "On Pumping Machinery (1897)." Water and Environment Journal 9, S1 (1995): 69–79. http://dx.doi.org/10.1111/j.1747-6593.1995.tb01176.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

SHIMIZU, Yoshiharu. "Sanitary of Food Machinery : Sanitary of Pumping Food Machinery." Journal of the Society of Mechanical Engineers 92, no. 846 (1989): 446–50. http://dx.doi.org/10.1299/jsmemag.92.846_446.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

GIBSON, D. C. "Pumping Machinery in the Mid-1990s." Water and Environment Journal 9, S1 (1995): 81–86. http://dx.doi.org/10.1111/j.1747-6593.1995.tb01177.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Deryaev, Annaguly. "Dual completion operation technology for two gas condensate reservoirs with production lifting by one column of pumping and compressor pipes." Naukovij žurnal «Tehnìka ta energetika» 14, no. 4 (2023): 33–41. http://dx.doi.org/10.31548/machinery/4.2023.33.

Full text

Abstract:

In the context of the active development of gas condensate fields with several reservoirs in the Gogrendag-Ekerem Upland (Korpedje, South Gamyshlja), the study of its technologies is an important area of work. The study aims to optimise the technology of simultaneously separating two gas condensate reservoirs by lifting products with one tubing string to increase hydrocarbon production efficiency. The methods used include the analytical method, functional method, statistical method, synthesis method, and others. In the course of the study, an innovative methodology was developed for the dual c

APA, Harvard, Vancouver, ISO, and other styles

6

Garate-Quispe, Jorge, Marx Herrera-Machaca, Victor Pareja Auquipata, Gabriel Alarcón Aguirre, Sufer Baez Quispe, and Edgar Eloy Carpio-Vargas. "Resilience of Aboveground Biomass of Secondary Forests Following the Abandonment of Gold Mining Activity in the Southeastern Peruvian Amazon." Diversity 16, no. 4 (2024): 233. http://dx.doi.org/10.3390/d16040233.

Full text

Abstract:

Amazon rainforests are critical for providing a wide range of ecosystem services. In the Southeastern Peruvian Amazon; however, goldmining activities are causing severe soil degradation and forest loss. We analyzed aboveground biomass (AGB), forest structure, and species diversity recovery during secondary succession in 179 forest plots. Our study provides the first field-based quantification of AGB recovery following the abandonment by two types of goldmining (heavy machinery and suction pumping) in Madre de Dios (Peru). We found that successional secondary forests in areas subjected to sucti

APA, Harvard, Vancouver, ISO, and other styles

7

Ilott, P. W., and A. J. Griffiths. "Fault diagnosis of pumping machinery using artificial neural networks." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 211, no. 3 (1997): 185–94. http://dx.doi.org/10.1243/0954408971529665.

Full text

Abstract:

Pumping costs within British industry are enormous, with the potential for considerable financial savings through fault diagnosis and condition-based maintenance. Accurate condition monitoring data interpretation is a key requirement in pump fault diagnosis. However, the human skills required to transform monitored data into maintenance information are often unavailable. Artificial neural networks (ANNs) are proposed for automation of this skill in the development of a pumping system decision support tool, the key requirement of which is accurate pump fault diagnosis. The cumulative sum charti

APA, Harvard, Vancouver, ISO, and other styles

8

Muntyan, Maria S., Dmitry A. Cherepanov, Anssi M. Malinen, et al. "Cytochrome cbb3 of Thioalkalivibrio is a Na+-pumping cytochrome oxidase." Proceedings of the National Academy of Sciences 112, no. 25 (2015): 7695–700. http://dx.doi.org/10.1073/pnas.1417071112.

Full text

Abstract:

Cytochrome c oxidases (Coxs) are the basic energy transducers in the respiratory chain of the majority of aerobic organisms. Coxs studied to date are redox-driven proton-pumping enzymes belonging to one of three subfamilies: A-, B-, and C-type oxidases. The C-type oxidases (cbb3 cytochromes), which are widespread among pathogenic bacteria, are the least understood. In particular, the proton-pumping machinery of these Coxs has not yet been elucidated despite the availability of X-ray structure information. Here, we report the discovery of the first (to our knowledge) sodium-pumping Cox (Scox),

APA, Harvard, Vancouver, ISO, and other styles

9

Hristea, Alexandru, Bogdan Tudor, Stefan Sefu, and Gabriela Milian. "Mechano-hydraulic pumping solutions for reduction off energy losses in agricultural mobile machinery." E3S Web of Conferences 180 (2020): 04020. http://dx.doi.org/10.1051/e3sconf/202018004020.

Full text

Abstract:

Hydraulic digital power consists in a hydraulic plant having one or more discreet valued components actively with which we are controlling the system output flow. In this paper authors study a solution of 4 fixed pumps parallel connected. This complex pumping system can achieve 15 flows. The pumping system consists in an electrical single speed motor, 4 fixed pumps, the repartition will achieve with the help of 4 electrohydraulic distributors and an electronic micro-controller. The hydraulic plant was made in our Research Institute in the digital hydraulic laboratory for conducting tests and e

APA, Harvard, Vancouver, ISO, and other styles

10

Aagaard, Anna, Gwen Gilderson, Denise A. Mills, Shelagh Ferguson-Miller, and Peter Brzezinski. "Redesign of the Proton-Pumping Machinery of CytochromecOxidase: Proton Pumping Does Not Require Glu(I-286)." Biochemistry 39, no. 51 (2000): 15847–50. http://dx.doi.org/10.1021/bi0012641.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Brzezinski, Peter. "S11/1 The proton pumping machinery of cytochrome c oxidase." Biochimica et Biophysica Acta (BBA) - Bioenergetics 1777 (July 2008): S65. http://dx.doi.org/10.1016/j.bbabio.2008.05.256.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

RAKAY, ROBERT, ALENA GALAJDOVA, and MAREK VAGAS. "CONDITION MONITORING OF PNEUMATIC MACHINERY WITHOUT OPERATION INTERRUPTION." MM Science Journal 2022, no. 4 (2022): 6026–32. http://dx.doi.org/10.17973/mmsj.2022_11_2022017.

Full text

Abstract:

The article deals with an example of a non-invasive measurement of the system. The proposed system is suitable in cases where the equipment analysed must be monitored without interrupting its function. The measurement demonstration can serve as proof of the concept of monitoring the state of moving parts of technical systems, such as hydraulic pumps, pressure pumping stations, and large ventilation systems, where mechanical damage prediction is very important because repair is very costly.

APA, Harvard, Vancouver, ISO, and other styles

13

Zhen, Jinshuai, Yanliang Xu, Peng Zhou, and Huixin Li. "Permanent Magnetization Transformation and Performance Analysis of Small Power Three Phase Asynchronous Motor." Journal of Physics: Conference Series 2589, no. 1 (2023): 012037. http://dx.doi.org/10.1088/1742-6596/2589/1/012037.

Full text

Abstract:

Abstract Oilfield pumping units are the main production machinery in the oilfield, and the electricity consumed accounts for about 60% of the oilfield’s electricity consumption. The requirements of the pumping unit for the electric motor are high starting torque, high efficiency, and a wide economic operating range. If an induction motor is used, in order to meet the requirements of high starting torque of the pumping unit, it is necessary to configure a large capacity induction motor. However, during normal operation, the average load rate is low, mostly under light or no-load operation, the

APA, Harvard, Vancouver, ISO, and other styles

14

Szurgacz, Dawid, Krzysztof Kos, Patryk Szolc, and Tatiana Gvozdkova. "Power generating units for a powered roof support complex." E3S Web of Conferences 174 (2020): 03008. http://dx.doi.org/10.1051/e3sconf/202017403008.

Full text

Abstract:

The degree of utilisation of machinery and equipment is an important factor influencing the volume of daily output of an underground hard coal mine. Consequently, it also affects the efficiency and economic performance of an underground mining plant. The main task of a new pumping station is to ensure safety and continuity of the operation process in both active and new longwalls in the future. The article presents a modern and innovative pumping station that meets the assumptions of Industry 4.0. The power units supplying a longwall complex included in the central pumping station were selecte

APA, Harvard, Vancouver, ISO, and other styles

15

Brzezinski, Peter, Christoph von Ballmoos, Pia Ädelroth, Robert B. Gennis, Irina Smirnova, and Jóhanna Vilhjálmsdóttir. "Choreography and architecture of the proton-pumping machinery in respiratory oxidases." Biochimica et Biophysica Acta (BBA) - Bioenergetics 1837 (July 2014): e5. http://dx.doi.org/10.1016/j.bbabio.2014.05.124.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Wang, An Lin, Zhong Qiu Shi, Yu Qin Hu, and Cai Xing Yuan. "Quantitatively Calculated Parameters Configuration of Concrete Pump Accumulator." Applied Mechanics and Materials 120 (October 2011): 551–55. http://dx.doi.org/10.4028/www.scientific.net/amm.120.551.

Full text

Abstract:

In order to solve the problem of the response time of concrete pump distribution circuit unmatching pumping construcution requirement,which caused by selecting accumulator based on experience, the parameter configuration of the accumulator was quantitatively expressed. The response time of the distribution circuit is divided into switch time of S tube distribution valve and accumulated pressure differential time of the accumulator. In order to meet the requirements of the response time of the pumping construction, based on the existing parameter configuration of the accumulator, with dynamic c

APA, Harvard, Vancouver, ISO, and other styles

17

Dambrosio, Lorenzo. "Multi-obective performance analysis of a wind power plant equipped with a PAT system." Journal of Physics: Conference Series 2648, no. 1 (2023): 012024. http://dx.doi.org/10.1088/1742-6596/2648/1/012024.

Full text

Abstract:

Abstract In conventional wind power plants, the wind turbine drives an electrical generator equipped with an AC/DC converter for battery charging purposes and with an inverter inverter to supply power to the grid / AC load. This approach exhibits some drawbacks like the energy losses associated to the power electronics and the cost and the waste management of the battery storage systems. To overcome such drawbacks, this work proposes a new plant scheme, where the battery system has been removed (or strongly reduced) and the storage task is accomplished by a pumping system equipped with a rever

APA, Harvard, Vancouver, ISO, and other styles

18

López-Morales, Juan A., Juan A. Martínez, and Antonio F. Skarmeta. "Improving Energy Efficiency of Irrigation Wells by Using an IoT-Based Platform." Electronics 10, no. 3 (2021): 250. http://dx.doi.org/10.3390/electronics10030250.

Full text

Abstract:

The irrigation sector has undergone a remarkable transformation in recent decades due to the application of pressurized water distribution technologies, improving the management of limited water resources. As a result of this transformation, irrigation has become, together with agricultural machinery, the primary consumer of energy within the agri-food sector. Furthermore, the energy cost of operating pumping equipment during a farming season represents 30–40% of the crop’s total cost. For this reason, one of the most interesting challenges in this scope is that of improving energy efficiency

APA, Harvard, Vancouver, ISO, and other styles

19

Wang, Gui Ling, Ming Lei Ma, Dong Mei Miao, and Hong Juan Ma. "Test Machinery System of the Pressure Water Absorption Inside the Lightweight Aggregate Concrete." Advanced Materials Research 671-674 (March 2013): 1950–53. http://dx.doi.org/10.4028/www.scientific.net/amr.671-674.1950.

Full text

Abstract:

Concrete is a composite construction material composed primarily of aggregate, cement, and water. While different formulations provided varied properties. Some times engineering structure need to expand its span length, the commonly thinking is how to decrease the dead load by no harming the structure capacity. The lightweight aggregate concrete focus on the light weight of the aggregate and it can be obtained by using nature stone or artificial stones. The application can decrease the weight by lowering the structure body with 20%-30% total weight. This article proposed an accuracy test machi

APA, Harvard, Vancouver, ISO, and other styles

20

Sadaf, Hina, Adnan Kiani, and Nazir Ahmad Mir. "Mixed convection analysis of cilia-driven flow of a Jeffrey fluid in a vertical tube." Canadian Journal of Physics 98, no. 2 (2020): 111–18. http://dx.doi.org/10.1139/cjp-2018-0753.

Full text

Abstract:

In this article, effects of cilia-driven flow of a Jeffrey fluid in a vertical tube are discussed. Mixed convection effects are also considered. Jeffrey fluid equations are simplified by the well-known assumptions of small Reynolds number and large wavelength. An exact solution has been managed for the simplified equations. The ciliated motion features are investigated by plots and are discussed in detail. The consequences show that the pumping machinery functions more competently drive forward Jeffrey fluid than Newtonian fluid. The results may help us better understand the transportation of

APA, Harvard, Vancouver, ISO, and other styles

21

Röpke, Michael, Daniel Riepl, Patricia Saura, et al. "Deactivation blocks proton pathways in the mitochondrial complex I." Proceedings of the National Academy of Sciences 118, no. 29 (2021): e2019498118. http://dx.doi.org/10.1073/pnas.2019498118.

Full text

Abstract:

Cellular respiration is powered by membrane-bound redox enzymes that convert chemical energy into an electrochemical proton gradient and drive the energy metabolism. By combining large-scale classical and quantum mechanical simulations with cryo-electron microscopy data, we resolve here molecular details of conformational changes linked to proton pumping in the mammalian complex I. Our data suggest that complex I deactivation blocks water-mediated proton transfer between a membrane-bound quinone site and proton-pumping modules, decoupling the energy-transduction machinery. We identify a putati

APA, Harvard, Vancouver, ISO, and other styles

22

Gibiec, Mariusz. "Prediction of Machines Health with Application of an Intelligent Approach – a Mining Machinery Case Study." Key Engineering Materials 293-294 (September 2005): 661–68. http://dx.doi.org/10.4028/www.scientific.net/kem.293-294.661.

Full text

Abstract:

Machine field services depend on sensor-driven management systems that provide alerts, alarms and indicators. At the moment the alarm is sounded, it’s sometimes too late to prevent the failure. There is no alert provided that looks at degradation over time. If we could monitor degradation, then we would forecast upcoming situations, and perform maintenance tasks when necessary. In our research we chose to focus on intelligent maintenance system, which is defined as the prediction and forecast of equipment performance. Predictive maintenance, on the other hand, focuses on machine performance fe

APA, Harvard, Vancouver, ISO, and other styles

23

Su, Xuchen, Jianjun Sun, Chenbo Ma, and Qiuping Yu. "Performance Analysis of the Self-Pumping Hydrodynamic Mechanical Seal with a Conical Convergent Diffuser Groove." Coatings 12, no. 8 (2022): 1058. http://dx.doi.org/10.3390/coatings12081058.

Full text

Abstract:

Requirements such as high opening force, low leakage rate, and design without matching auxiliary flushing systems are expected of the modern fluid machinery shaft seals used in the process industry. A self-pumping hydrodynamic mechanical seal with a conical convergent diffuser groove is proposed and its sealing performance is studied by numerical simulation in this paper. Further, its sealing performance is compared to that of a flat-bottomed equal cross-sectional diffuser groove and the results have shown that the proposed seal has more superior sealing performance. The influence of structura

APA, Harvard, Vancouver, ISO, and other styles

24

Famiglietti, Antonio, Antonio Lecuona-Neumann, Mohammad Rahjoo, and José Nogueira-Goriba. "Solar Hot Air for Industrial Applications Using Linear Fresnel Concentrating Collectors and Open Brayton Cycle Layout." E3S Web of Conferences 238 (2021): 01003. http://dx.doi.org/10.1051/e3sconf/202123801003.

Full text

Abstract:

Many industrial processes use hot air as a medium. This is especially relevant for drying. Nowadays, most of them consume fossil energy. This study analyses an innovative facility for direct solar heating of air up to 400 °C. For this aim, a medium-scale solar field of linear Fresnel collectors is proposed to heat ambient air inside it. No other dedicated heat transfer fluid is necessary. A simpler layout avoids costs, hurdles, and risks of heat transfer liquids and the related machinery. A Brayton cycle configuration avoids auxiliary energy consumption for pumping air through the collectors b

APA, Harvard, Vancouver, ISO, and other styles

25

Liu, Gaojun, Shan Yang, Gaixia Wang, Fenglei Li, and Dongdong You. "A Decision-Making Method for Machinery Abnormalities Based on Neural Network Prediction and Bayesian Hypothesis Testing." Electronics 10, no. 14 (2021): 1610. http://dx.doi.org/10.3390/electronics10141610.

Full text

Abstract:

For anomaly identification of predicted data in machinery condition monitoring, traditional threshold methods have problems during residual testing. It is difficult to make decisions when the residuals are close to the threshold and fluctuate. This paper proposes a Bayesian dynamic thresholding method that combines Bayesian inference with neural network signal prediction. The method makes full use of historical prior data to build an anomaly identification and warning model applicable under single variable or multidimensional variables. A long short-term memory signal prediction model is estab

APA, Harvard, Vancouver, ISO, and other styles

26

Warnau, Judith, Vivek Sharma, Ana P. Gamiz-Hernandez, et al. "Redox-coupled quinone dynamics in the respiratory complex I." Proceedings of the National Academy of Sciences 115, no. 36 (2018): E8413—E8420. http://dx.doi.org/10.1073/pnas.1805468115.

Full text

Abstract:

Complex I couples the free energy released from quinone (Q) reduction to pump protons across the biological membrane in the respiratory chains of mitochondria and many bacteria. The Q reduction site is separated by a large distance from the proton-pumping membrane domain. To address the molecular mechanism of this long-range proton-electron coupling, we perform here full atomistic molecular dynamics simulations, free energy calculations, and continuum electrostatics calculations on complex I from Thermus thermophilus. We show that the dynamics of Q is redox-state-dependent, and that quinol, QH

APA, Harvard, Vancouver, ISO, and other styles

27

Agip, Ahmed-Noor A., James N. Blaza, Justin G. Fedor, and Judy Hirst. "Mammalian Respiratory Complex I Through the Lens of Cryo-EM." Annual Review of Biophysics 48, no. 1 (2019): 165–84. http://dx.doi.org/10.1146/annurev-biophys-052118-115704.

Full text

Abstract:

Single-particle electron cryomicroscopy (cryo-EM) has led to a revolution in structural work on mammalian respiratory complex I. Complex I (mitochondrial NADH:ubiquinone oxidoreductase), a membrane-bound redox-driven proton pump, is one of the largest and most complicated enzymes in the mammalian cell. Rapid progress, following the first 5-Å resolution data on bovine complex I in 2014, has led to a model for mouse complex I at 3.3-Å resolution that contains 96% of the 8,518 residues and to the identification of different particle classes, some of which are assigned to biochemically defined sta

APA, Harvard, Vancouver, ISO, and other styles

28

Kaya, Mehmet, and Haluk Erol. "Experimental investigation of cavitation-induced noise and vibration in a centrifugal pump." Noise Control Engineering Journal 70, no. 6 (2022): 497–506. http://dx.doi.org/10.3397/1/377043.

Full text

Abstract:

Cavitation has become a serious concern threatening operational stability as the need for high-speed machinery has grown. In this study, noise (sound pressure level) and vibrations (structural) were measured in a radial flow centrifugal pump for design and off-design conditions under cavitation. Because the structure of a particular noise/vibration spectrum (as well as its total level) is affected by the operating conditions and stage of cavitation within the pump, a detailed analysis the noise/vibration spectra during the pumping process was carried out to detect of the cavitation phenomenon'

APA, Harvard, Vancouver, ISO, and other styles

29

Chand, Aneesh A., Kushal A. Prasad, Ellen Mar, et al. "Design and Analysis of Photovoltaic Powered Battery-Operated Computer Vision-Based Multi-Purpose Smart Farming Robot." Agronomy 11, no. 3 (2021): 530. http://dx.doi.org/10.3390/agronomy11030530.

Full text

Abstract:

Farm machinery like water sprinklers (WS) and pesticide sprayers (PS) are becoming quite popular in the agricultural sector. The WS and PS are two distinct types of machinery, mostly powered using conventional energy sources. In recent times, the battery and solar-powered WS and PS have also emerged. With the current WS and PS, the main drawback is the lack of intelligence on water and pesticide use decisions and autonomous control. This paper proposes a novel multi-purpose smart farming robot (MpSFR) that handles both water sprinkling and pesticide spraying. The MpSFR is a photovoltaic (PV) p

APA, Harvard, Vancouver, ISO, and other styles

30

PANDEY, S. K., and DHARMENDRA TRIPATHI. "PERISTALTIC FLOW CHARACTERSTICS OF MAXWELL AND MAGNETOHYDRODYNAMIC FLUIDS IN FINITE CHANNELS: MODELS FOR OESOPHAGEAL SWALLOWING." Journal of Biological Systems 18, no. 03 (2010): 621–47. http://dx.doi.org/10.1142/s0218339010003445.

Full text

Abstract:

This is an attempt to investigate swallowing of a food bolus through oesophagus by modelling it as an unsteady peristaltic transport of Maxwell and magnetohydrodynamic (MHD) fluids in channels of finite length. The walls of the channels are subjected to progressive transverse contraction waves so that the natural oesophageal wall contractions are matched. The analysis is carried out in non-dimensional form by using long wavelength approximations. The expressions for axial and transverse velocities are derived and pressure across a wavelength is estimated. The reflux limit is determined for bot

APA, Harvard, Vancouver, ISO, and other styles

31

Ma, Lie, Siyao Sun, Ziyu Yuan, Zixin Deng, Yajie Tang, and Yi Yu. "Three putative DNA replication/repair elements encoding genes confer self-resistance to distamycin in Streptomyces netropsis." Acta Biochimica et Biophysica Sinica 52, no. 1 (2019): 91–96. http://dx.doi.org/10.1093/abbs/gmz133.

Full text

Abstract:

Abstract Distamycin (DST) is a well-characterized DNA minor groove binder with antivirus activity and antitumor potency. Two separate gene clusters (a 28-kb cluster and a 7-kb cluster) have recently been identified to coordinately encode the biosynthetic machinery of DST in Streptomyces netropsis. Here we report a gene cassette, which is linked to the aforementioned smaller dst gene cluster and plays an important role in the self-resistance to DST in S. netropsis. This cassette consists of three uncharacterized genes that might be implicated in DNA replication/repair. Knockout of the cassette

APA, Harvard, Vancouver, ISO, and other styles

32

Pandey, S. K., and Dharmendra Tripathi. "Influence of Magnetic Field on the Peristaltic Flow of a Viscous Fluid through a Finite-Length Cylindrical Tube." Applied Bionics and Biomechanics 7, no. 3 (2010): 169–76. http://dx.doi.org/10.1155/2010/294517.

Full text

Abstract:

The paper presents an analytical investigation of the peristaltic transport of a viscous fluid under the influence of a magnetic field through a tube of finite length in a dimensionless form. The expressions of pressure gradient, volume flow rate, average volume flow rate and local wall shear stress have been obtained. The effects of the transverse magnetic field and electrical conductivity (i.e. the Hartmann number) on the mechanical efficiency of a peristaltic pump have also been studied. The reflux phenomenon is also investigated. It is concluded, on the basis of the pressure distribution a

APA, Harvard, Vancouver, ISO, and other styles

33

Marner, S. T., D. Schröter, and N. Jardin. "Towards energy neutrality by optimising the activated sludge process of the WWTP Bochum-Ölbachtal." Water Science and Technology 73, no. 12 (2016): 3057–63. http://dx.doi.org/10.2166/wst.2016.142.

Full text

Abstract:

Abstract As a result of Ruhrverband's regularly performed energy audits the wastewater treatment plant (WWTP) Bochum-Ölbachtal shows substantial deficits concerning energy efficiency. Due to the energy consumption of internal recirculation, mixers and return activated sludge (RAS) pumping the existing pre-denitrification process configuration offers a specific energy consumption for biological treatment of 23 kWh (PE · a)−1. In order to optimise the energy situation and to improve the treatment efficiency, the process layout was changed completely to a three-stage step-feed process. By optimis

APA, Harvard, Vancouver, ISO, and other styles

34

Song, Xiaosheng, Shuo Wang, and Xiaosheng Song. "Design and Analysis of a Concrete Placer for Optimize the Craft of Infilled Walls’S Constructional Column." Open Civil Engineering Journal 9, no. 1 (2015): 950–56. http://dx.doi.org/10.2174/1874149501509010950.

Full text

Abstract:

Aiming at the construction of infill wall structural column are often used in artificial layer pouring method and top pouring back method, to improve the structure of wall column concrete pouring process, puts forward a new type of structural column concrete pouring machine. The application of this equipment, process worker can finish pouring filled wall structure column and tap filled wall structure column and unloading modulus. Reduces the labor intensity, reduces the construction cost and ensure the construction quality of frame pillar structure, realizes the structural column placement by

APA, Harvard, Vancouver, ISO, and other styles

35

Gricenko, Aleksandr, Vladimir Kozhanov, Aleksey Medvedev, Nail Adigamov, and Il'dus Gimaltdinov. "STUDY OF THE OUTPUT CHARACTERISTICS OF TURBOCOMPRESSORS OF MODERN AGRICULTURAL MACHINERY." Vestnik of Kazan State Agrarian University 18, no. 2 (2023): 57–65. http://dx.doi.org/10.12737/2073-0462-2023-57-65.

Full text

Abstract:

The main causes of malfunction of turbocharged internal combustion engines are high dynamic loads, significant thermal loads in friction zones, wear of turbocharger elements, overheating of components and systems, oil starvation, etc. The reliability of the output parameters of the turbochargers depending on the variable input data values. A condition has been obtained for the trouble-free operation of turbocharger bearings, taking into account oil pumping at engine start, which makes it possible to determine the limits of turbocharger performance and to exclude failure cases with a guarantee.

APA, Harvard, Vancouver, ISO, and other styles

36

Vasylyshyn, Vitalii, Iryna Taras, Iryna Bekish, Olena Kornuta, and Volodymyr Kornuta. "Partial Cases of Stressed-Deformed Condition of Casing and Pump Compressor Pipes." Management Systems in Production Engineering 28, no. 2 (2020): 97–103. http://dx.doi.org/10.2478/mspe-2020-0015.

Full text

Abstract:

AbstractThreaded joints are the most technological for piling up in the fields. However, violations of standard threaded joints account for 70% of all complications in pipe processing and production. These malfunctions result in significant material losses, reduced well productivity, and contamination of the wells and environmental pollution. Particularly acute is the loss of these sealed joints during exploration and development of gas and gas condensate fields. The necessary increase in volumes and intensification of hydrocarbon energy production is envisaged by the increase of drilling dept

APA, Harvard, Vancouver, ISO, and other styles

37

Giljen, Zdravko, and Miloš Nedeljković. "Universal Form of Radial Hydraulic Machinery Four-Quadrant Equations for Calculation of Transient Processes." Energies 16, no. 23 (2023): 7736. http://dx.doi.org/10.3390/en16237736.

Full text

Abstract:

Suter curves for the Wh and Wm characteristics and four-quadrant (4Q) diagrams of 11 radial pump–turbine models with different specific speeds (nq = 24.34, 24.8, 27, 28.6, 38, 41.6, 41.9, 43.83, 50, 56, and 64.04) are presented for the first time in this paper, as well as Suter curves for two pump models (nq = 25 and 41.8) previously published in the literature. All of these curves were analyzed to establish a certain universal law of behavior, depending on the specific speed. To determine such a law, a fitting procedure using regression and spline methods was carried out. This paper provides

APA, Harvard, Vancouver, ISO, and other styles

38

Paramonov, Aleksey, Safarbek Oshurbekov, Vadim Kazakbaev, Vladimir Prakht, and Vladimir Dmitrievskii. "Investigation of the Effect of the Voltage Drop and Cable Length on the Success of Starting the Line-Start Permanent Magnet Motor in the Drive of a Centrifugal Pump Unit." Mathematics 11, no. 3 (2023): 646. http://dx.doi.org/10.3390/math11030646.

Full text

Abstract:

The use of Line-Start Permanent Magnet Synchronous Motors (LSPMSM) improves the efficiency of conventional direct-on-line electric motor-driven fluid machinery such as pumps and fans. Such motors have increased efficiency compared to induction motors and do not have an excitation winding compared to classical synchronous motors with an excitation winding. However, LSPMSMs have difficulty in starting mechanisms with a high moment of inertia. This problem can be exacerbated by a reduced supply network voltage and a voltage drop on the cable. This article investigates the transients during the st

APA, Harvard, Vancouver, ISO, and other styles

39

Gladyck, Stephanie, Siddhesh Aras, Maik Hüttemann, and Lawrence I. Grossman. "Regulation of COX Assembly and Function by Twin CX9C Proteins—Implications for Human Disease." Cells 10, no. 2 (2021): 197. http://dx.doi.org/10.3390/cells10020197.

Full text

Abstract:

Oxidative phosphorylation is a tightly regulated process in mammals that takes place in and across the inner mitochondrial membrane and consists of the electron transport chain and ATP synthase. Complex IV, or cytochrome c oxidase (COX), is the terminal enzyme of the electron transport chain, responsible for accepting electrons from cytochrome c, pumping protons to contribute to the gradient utilized by ATP synthase to produce ATP, and reducing oxygen to water. As such, COX is tightly regulated through numerous mechanisms including protein–protein interactions. The twin CX9C family of proteins

APA, Harvard, Vancouver, ISO, and other styles

40

Shrestha, Rajendra, Nani Raut, Lwin Swe, and Thida Tieng. "Climate Change Adaptation Strategies in Agriculture: Cases from Southeast Asia." Sustainable Agriculture Research 7, no. 3 (2018): 39. http://dx.doi.org/10.5539/sar.v7n3p39.

Full text

Abstract:

Climate change has become apparent and been threatening more and more in Southeast Asia. Its impacts on agriculture and adaptation strategies at household level in farming systems areas are explored. The study focused on better understanding of climate change impacts and adaptation practices in four villages of Myanmar and Cambodia. Household questionnaire survey, focus group discussions and key informant interviews were used for data collection at household and community level supplemented with secondary data. Dry Zone farmers of Myanmar reported increase in crop diversity while in the Kampon

APA, Harvard, Vancouver, ISO, and other styles

41

Yamuna N, Mahantesh R. Nayak, and Rakesh N. "Groundwater Marketing Dynamics in Northern Dry Zone Farms of Karnataka: A Comparative Study (2006 to 2021)." International Journal of Environment and Climate Change 14, no. 5 (2024): 135–46. http://dx.doi.org/10.9734/ijecc/2024/v14i54176.

Full text

Abstract:

Groundwater is an essential resource, but it is becoming increasingly scarce and depleting rapidly, particularly in Karnataka. As a result, groundwater markets have emerged as an alternative strategy to manage this limited resource more efficiently and equitably. These markets enable farmers who cannot afford water extraction machinery to access irrigation. This article, aims to study present status of groundwater markets, temporal depletion of water table, groundwater security, economics and factors affecting water trade in Northern Dry Zone of Karnataka, mainly to compare with the results ob

APA, Harvard, Vancouver, ISO, and other styles

42

Uno, Shinpei, Takahiro Masuya, Kyoko Shinzawa-Itoh, et al. "Oversized ubiquinones as molecular probes for structural dynamics of the ubiquinone reaction site in mitochondrial respiratory complex I." Journal of Biological Chemistry 295, no. 8 (2020): 2449–63. http://dx.doi.org/10.1074/jbc.ra119.012347.

Full text

Abstract:

NADH-quinone oxidoreductase (complex I) couples electron transfer from NADH to quinone with proton translocation across the membrane. Quinone reduction is a key step for energy transmission from the site of quinone reduction to the remotely located proton-pumping machinery of the enzyme. Although structural biology studies have proposed the existence of a long and narrow quinone-access channel, the physiological relevance of this channel remains debatable. We investigated here whether complex I in bovine heart submitochondrial particles (SMPs) can catalytically reduce a series of oversized ubi

APA, Harvard, Vancouver, ISO, and other styles

43

Kanazawa, S., M. Driscoll, and K. Struhl. "ATR1, a Saccharomyces cerevisiae gene encoding a transmembrane protein required for aminotriazole resistance." Molecular and Cellular Biology 8, no. 2 (1988): 664–73. http://dx.doi.org/10.1128/mcb.8.2.664-673.1988.

Full text

Abstract:

In Saccharomyces cerevisiae, 3-amino-1,2,4-triazole (aminotriazole) competitively inhibits the activity of imidazoleglycerolphosphate dehydratase, the product of the HIS3 gene. Wild-type strains are able to grow in the presence of 10 mM aminotriazole because they induce the level of imidazoleglycerolphosphate dehydratase. However, strains containing gcn4 mutations are unable to grow in medium containing aminotriazole because they lack the GCN4 transcriptional activator protein necessary for the coordinate induction of HIS3 and other amino acid biosynthetic genes. Here, we isolated a new gene,

APA, Harvard, Vancouver, ISO, and other styles

44

Kanazawa, S., M. Driscoll, and K. Struhl. "ATR1, a Saccharomyces cerevisiae gene encoding a transmembrane protein required for aminotriazole resistance." Molecular and Cellular Biology 8, no. 2 (1988): 664–73. http://dx.doi.org/10.1128/mcb.8.2.664.

Full text

Abstract:

In Saccharomyces cerevisiae, 3-amino-1,2,4-triazole (aminotriazole) competitively inhibits the activity of imidazoleglycerolphosphate dehydratase, the product of the HIS3 gene. Wild-type strains are able to grow in the presence of 10 mM aminotriazole because they induce the level of imidazoleglycerolphosphate dehydratase. However, strains containing gcn4 mutations are unable to grow in medium containing aminotriazole because they lack the GCN4 transcriptional activator protein necessary for the coordinate induction of HIS3 and other amino acid biosynthetic genes. Here, we isolated a new gene,

APA, Harvard, Vancouver, ISO, and other styles

45

Popov, A. Y. U. "Simulation modeling of the volumetric hydraulic drive." Traktory i sel hozmashiny 85, no. 3 (2018): 45–53. http://dx.doi.org/10.17816/0321-4443-66397.

Full text

Abstract:

In the design of a variety of the modern agricultural machines, the hydraulic drive with reciprocating motion for lifting, lowering and moving the working bodies has obtained a wide application. One of the important stages in the design of hydraulic drives and transmissions is a simulation. In connection with the laboriousness of carrying out the full-scale experiment and the cumbersome calculation of mathematical models of hydrosystems, as well as the development of the computing machinery, the simulation modeling has obtained a widespread usage. This type of computer simulation allows to inv

APA, Harvard, Vancouver, ISO, and other styles

46

Salomaa, Kai, D. Wood, and Sheng Yu. "Pumping and pushdown machines." RAIRO - Theoretical Informatics and Applications 28, no. 3-4 (1994): 221–32. http://dx.doi.org/10.1051/ita/1994283-402211.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

redden, elizabeth. "Where Pumpkins Fly." Gastronomica 10, no. 4 (2010): 21–24. http://dx.doi.org/10.1525/gfc.2010.10.4.21.

Full text

Abstract:

At the World Championship Punkin Chunkin, you're supposed to throw your food. The contestants hurl pumpkins, the winning team being the one that throws a pumpkin the longest distance. In advance of the competition, which attracts tens of thousands of spectators and happens each November in a field outside Bridgeville, Delaware, contestants construct elaborate chunking machines——including air cannons, catapults, and trebuchets. Contestants also scavenge pumpkin patches in search of ideal, 8-to-10 pound specimen——typically of the Calabaza, Casper, or Lumina varieties——for purposes of ““chunking.

APA, Harvard, Vancouver, ISO, and other styles

48

Reshetov, A. A., and D. I. Fedorov. "METHODS, MEANS AND TECHNOLOGY FOR IMPROVING THE EFFICIENCY OF VIBRATION DIAGNOSTICS OF GAS PUMPING UNITS." Kontrol'. Diagnostika, no. 298 (April 2023): 50–57. http://dx.doi.org/10.14489/td.2023.04.pp.050-057.

Full text

Abstract:

Computational and experimental methods, tools and technology for monitoring the technical condition of gas pumping units according to the parameters of torsional vibrations are proposed. To identify risk-sensitive parts of gas pumping units, energy forms of the machine's own torsional vibrations of the shaft line are used. The results obtained made it possible to reduce operating costs.

APA, Harvard, Vancouver, ISO, and other styles

49

Tsurikova, Elena, and Marina Sharkova. "Efficiency of using hydro-turbine pumping stations for machine irrigation." E3S Web of Conferences 402 (2023): 05027. http://dx.doi.org/10.1051/e3sconf/202340205027.

Full text

Abstract:

The use of hydro-turbine pumps increases the efficiency of pumping stations for machine irrigation by utilizing the free water energy of agricultural irrigation sources. The energy savings on irrigation pumping stations achieved through the use of hydro-turbine pumping stations (HTPS) (traditionally obtained through electrical networks) creates ecological conditions for the implementation of turbine pumps, while also improving the economic efficiency of pumping stations.

APA, Harvard, Vancouver, ISO, and other styles

50

Toirov, Olimjon, and Salikhdjan Khalikov. "Diagnostics of pumping units of pumping station of machine water lifting." E3S Web of Conferences 365 (2023): 04013. http://dx.doi.org/10.1051/e3sconf/202336504013.

Full text

Abstract:

The purpose of diagnostics is to determine the operability of the pumping units of the pumping station of the machine water lifting at a given time and to identify defects in their components. For this reason, the article presents diagnostic issues for pumping stations No. 1 - No. 6 of the Karshi main canal, designed and commissioned in 1965-1976, where 6 pumping units of the OPV11-260EG type with electric motors of the VDS-375/130-24 type are installed, vertical pumping units, shaft power – 8010 kW, rated power electric motor – 12500 kW, voltage – 10.0 kV, stator current – 825.0 A, maximum pe

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!