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Journal articles on the topic 'Medium speed'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Väisänen, Ilkka, Antti Mäntylä, Antti Korpela, Teemu Kuivaniemi, and Tero Frondelius. "Medium Speed Engine Crankshaft Analysis." Rakenteiden Mekaniikka 50, no. 3 (2017): 341–44. http://dx.doi.org/10.23998/rm.64916.

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This article describes the overview of crankshaft analysis of a medium speed dieselengine. Crankshaft analysis includes static analysis, crankshaft dynamics, bearing analysis, gearanalysis, and stress & fatigue analysis, the latter being in main focus in this article. AVL ExcitePower unit is used for multi-body dynamics and Abaqus for ﬁnite element analysis.

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2

Wik, C. "Reducing medium-speed engine emissions." Journal of Marine Engineering & Technology 9, no. 2 (2010): 37–44. http://dx.doi.org/10.1080/20464177.2010.11020234.

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3

Mulyaningsih, Rejeki Sri. "Effect of Amplitude and Frequency on the Speed of Sound Waves in Air and Water Using PhET Simulation." Jurnal Pendidikan dan Ilmu Fisika 4, no. 1 (2024): 40. http://dx.doi.org/10.52434/jpif.v4i1.3501.

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Sound waves can occur not only in solid medium but also in air and water mediums. The effect of amplitude and frequency on the speed of sound waves differs between air and water mediums. The speed of sound waves cannot be seen with the naked eye. A virtual lab is needed to determine the speed of sound wave propagation. The purpose of this study is to determine the effect of amplitude and frequency on the speed of sound waves in air and water medium. The research method used is a quantitative method by conducting experiments online using the PhET application. PhET is used because it can carry o

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4

Lai, Qingying, Jun Liu, Ali Haghani, Lingyun Meng, and Yihui Wang. "Energy-efficient speed profile optimization for medium-speed maglev trains." Transportation Research Part E: Logistics and Transportation Review 141 (September 2020): 102007. http://dx.doi.org/10.1016/j.tre.2020.102007.

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5

Zheng, Zhanji, Zhigang Du, Qiaojun Xiang, and Guojun Chen. "Influence of multiscale visual information on driver’s perceived speed in highway tunnels." Advances in Mechanical Engineering 10, no. 12 (2018): 168781401881896. http://dx.doi.org/10.1177/1687814018818961.

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Speed illusion is the leading contributing factor to traffic accidents in highway tunnels. This study aimed to estimate the influence of visual information at different scales and frequencies on drivers’ visual perception and driving safety in highway tunnels. The speed perception of drivers was measured using the stimulus of subjectively equivalent speeds as an index. Thirty drivers were recruited to conduct a psychophysical experiment on speed perception using a driving simulator. The large-, medium- and small-scale visual information in a frequency range of 0.1–32 Hz were used in the experi

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Koehler, Horst W., and Claus Windelev. "Low-Emission Medium-Speed Diesel Engines." Marine Technology and SNAME News 38, no. 04 (2001): 261–67. http://dx.doi.org/10.5957/mt1.2001.38.4.261.

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In today's environmentally aware society the large-bore diesel engine is not alone in coming under scrutiny. Although only 0.25 to 0.35% among the total exhaust gases produced by this type of engine are toxious compounds, even such small amounts still need to be reduced further. MAN B&W Diesel, market leaders in the production of large-bore two-and four-stroke diesel engines covering the output bracket between 680 hp and almost 100 000 hp per engine (Fig. 1), have been facing up to this challenge for almost a decade. Taking state-of-the-art MAN B&W four-stroke engines as its example, t

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7

Herrmann, Robert. "“New Generation of Medium-Speed Engines”." JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN 30, no. 12 (1995): 877–83. http://dx.doi.org/10.5988/jime1966.30.877.

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8

Warriner, J. F., and D. L. Westerling. "Medium-Speed Engine Bearings—Development Experience." Journal of Engineering for Gas Turbines and Power 113, no. 3 (1991): 331–39. http://dx.doi.org/10.1115/1.2906234.

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After a brief history of the introduction of galvanically applied overlays to the surface of thin-walled half-bearings, the paper goes on to describe experiences in service engines. This shows that from the mid-1970s, overlay life could be sharply reduced due to a variety (or combination) of factors. These are described, the possible causes explained, and various palliatives investigated. The principle factor in the mid-1970s was the rapid rise in the use of lower quality heavy fuels initiated by escalating oil costs. The consequence of using these fuels was often rapid overlay loss, which in

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9

PHINNEY, JOHN M. "Medium Speed Diesel Propulsion Reduction Gearing." Naval Engineers Journal 106, no. 3 (1994): 29–40. http://dx.doi.org/10.1111/j.1559-3584.1994.tb02839.x.

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10

Åstrand, Ulf. "Modular Medium Speed Four-stroke Engine." MTZ industrial 6, no. 3 (2016): 14–21. http://dx.doi.org/10.1007/s40353-016-0027-1.

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11

BOLSTER, DIOGO, ALICE HANG, and P. F. LINDEN. "The front speed of intrusions into a continuously stratified medium." Journal of Fluid Mechanics 594 (December 14, 2007): 369–77. http://dx.doi.org/10.1017/s0022112007008993.

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This paper examines intrusive Boussinesq gravity currents, propagating into a continuously stratified fluid. We develop a model, based on energy arguments, to predict the front speed of such an intrusive gravity current from a lock release. We find that the depth at which the intrusion occurs, which corresponds to the level of neutral buoyancy (i.e. the depth where the intrusion density equals the stratified fluid density), affects the front speed. The maximum speeds occur when the intrusion travels along the top and bottom boundaries and the minimum speed occurs at mid-depth. Experiments and

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12

LÖNNBERG, BRUNO. "DEVELOPMENT OF WOOD GRINDING. 6. SIGNIFICANCE OF THE FRICTIONAL COEFFICIENT IN GRINDING OF SPRUCE WOOD." Cellulose Chemistry and Technology 58, no. 3-4 (2024): 419–24. http://dx.doi.org/10.35812/cellulosechemtechnol.2024.58.40.

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The purpose of this study was to clarify whether the wood grinding model – based on an energy balance for the grinding zone – would improve understanding of wood grinding for pulp. This study relied on previously obtained data by the Finnish Pulp and Paper Research Institute. The frictional coefficient (Pc/Pt) computed and the power-specific groundwood production (Ġw/Pt) were important x- and y- variables, respectively. Fresh spruce wood samples were ground by application of a laboratory grinder, where the stone surface speeds were 30, 15 and 7 m/s, respectively. The power-specific productivit

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13

Khalid, Muhammad Anas, Muhammad Bilal Gillani, and Basit Ali. "The Role of Coaching Strategies and Training Programs in Developing Bowling Speed among Amateur Cricket Players." Journal of Social Sciences Review 5, no. 1 (2025): 277–89. https://doi.org/10.62843/jssr.v5i1.478.

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The aim of this research was to assess how power training and resistance affect medium-fast bowlers' bowling speed in cricket. Because of their capacity to create pace, medium-fast bowlers are vital in cricket; nevertheless, it's not known whether power training or resistance can really improve their bowling speed. This research included twenty medium-fast bowlers from cricket clubs of the Sports Board Punjab, aged between twenty and 25 years. Under a pre-test and post-test quasi-experimental design, bowling speeds were assessed using a speed gun both before and after an 8-week resistance and

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14

Wang, Lijie, Xianwen Zhu, Ziyi Li, and Shuchao Li. "Ultrasonic Obstacle Avoidance and Full-Speed-Range Hybrid Control for Intelligent Garages." Sensors 24, no. 17 (2024): 5694. http://dx.doi.org/10.3390/s24175694.

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In the current study, which focuses on the operational safety problem in intelligent three-dimensional garages, an obstacle avoidance measurement and control scheme for the AGV parking robot is proposed. Under the premise of high-precision distance detection using Kalman filtering, a mathematical model of a brushless DC (BLDC) motor with full-speed range hybrid control is established. MATLAB/Simulink (R2022a) is used to build the control model, which has dual closed-loop vector-controlled motors in the low- to medium-speed range, with photoelectric encoders for speed feedback. The simulation r

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15

Coetzee, Etienne, Bernd Krauskopf, and Mark Lowenberg. "Analysis of Medium-Speed Runway Exit Maneuvers." Journal of Aircraft 48, no. 5 (2011): 1553–64. http://dx.doi.org/10.2514/1.c031276.

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16

Mizuhara, Shuhei, Motomu Kunimitsu, Osamu Beppu, Motoyuki Takahashi, Atsushi Sakane, and Masaki Tanaka. "High-Powered ADD30V Medium Speed Diesel Engine." JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN 33, no. 12 (1998): 868–77. http://dx.doi.org/10.5988/jime1966.33.868.

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17

Kumar, Aanjaneya, and Deepak Dhar. "TASEP speed process: an effective medium approach." Journal of Statistical Mechanics: Theory and Experiment 2020, no. 1 (2020): 013211. http://dx.doi.org/10.1088/1742-5468/ab5b8a.

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18

Gao, Yaokui, Deliang Zeng, and Jizhen Liu. "Modeling of a medium speed coal mill." Powder Technology 318 (August 2017): 214–23. http://dx.doi.org/10.1016/j.powtec.2017.05.015.

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19

Yamamoto, Hideyoshi, Shoji Kato, Shuichi Anzawa, and Kazumi Imai. "Field Experience with Medium Speed Marine Engines." MTZ industrial 6, no. 2 (2016): 32–39. http://dx.doi.org/10.1007/s40353-016-0018-2.

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20

Nikl, M., P. Bohacek, A. Vedda, et al. "Efficient Medium-Speed PbWO4:Mo,Y Scintillator." physica status solidi (a) 182, no. 2 (2000): R3—R5. http://dx.doi.org/10.1002/1521-396x(200012)182:23.0.co;2-8.

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21

Coppo, Marco. "Intelligent Injection System for Medium- speed Engines." MTZ worldwide 83, no. 12 (2022): 40–47. http://dx.doi.org/10.1007/s38313-022-1405-4.

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22

Li, Junmei, Zhao Qi, Yanfeng Li, Wan-Ki Chow, Fei Xie, and Qiwei Dong. "Field Measurements of Free Ascending Behavior of Occupants along Medium-Long Stairway." Applied Sciences 12, no. 19 (2022): 10038. http://dx.doi.org/10.3390/app121910038.

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The human behavior of walking upstairs was studied by field measurement in a 10-storey building, which simulates the greatest depth of most underground facilities. The effects of age, gender, walking distance, and fatigue on individual free ascending speed on stairs were investigated. The experimental results showed that walking distance and fatigue due to the long-distance upward walking have great impact on the upward walking and ascent speed. When climbing over 8 floors (vertical height about 30 m), the mean ascent speeds were 0.97 m/s and 0.78 m/s for young males and females, and 0.91 m/s

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23

Ahmad, Sanaullah, Mohsin Tahir, Asif Nawaz, Ghufran Ullah, Zeeshan Najam Khan, and Sheeraz Ahmed. "DESIGN AND ANALYSIS OF HYDRO TURBINES FOR ELECTRICAL POWER GENERATION." Kashf Journal of Multidisciplinary Research 1, no. 12 (2024): 153–68. https://doi.org/10.71146/kjmr162.

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In designing a hydropower plant, the design of turbine type depends on the head and water flow. Researchers suggest that Axial/Propeller turbines can perform efficiently in lower heads because of their high specific speeds, Francis turbines can perform efficiently in medium to medium/high heads with high water discharge and medium specific speeds whereas Pelton turbines can perform efficiently in high heads with low water discharge and low specific speeds. In this paper the output performance of Axial/ Propeller, Francis and Pelton turbines are designed, analyzed and compared using TURBNPRO so

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24

HV Gallucci, Raymond. "A Possible Aether Explanation for Two Light Phenomena: Varying Speed with Medium and Cosmological Redshift." Space Science Journal 1, no. 2 (2024): 01–04. http://dx.doi.org/10.33140/ssj.01.02.03.

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The speed of light (3.00 x 105 km/s in a vacuum) lies beyond human comprehension, especially if one is to postulate that it can be achieved ballistically by a particle, even a “massless” one such as a photon. If such speeds are attainable, which experimentation and astronomical observation apparently have “proven,” then it is slightly less of a leap of faith to imagine such speeds to result from wave phenomena, suggesting that a propagating medium for light must exist (an “aether”) despite such allegedly having been disproven pre-Einstein. With this possibility in mind, two light phenomena are

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25

Li, Xiaozhen, Dangxiong Wang, Dejun Liu, Lifeng Xin, and Xun Zhang. "Dynamic analysis of the interactions between a low-to-medium-speed maglev train and a bridge: Field test results of two typical bridges." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 232, no. 7 (2018): 2039–59. http://dx.doi.org/10.1177/0954409718758502.

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The rated suspension gap of a low-to-medium-speed maglev train with electromagnetic suspension is normally 8–10 mm. However, while either passing over a bridge or being stationary on one, the maglev train deforms the bridge and therefore alters the suspension gap. Hence, a problem arises due to coupled vibrations between the maglev train and its supporting bridge. In the study reported here, field experiments were conducted on the Chinese Changsha maglev line, which was the first commercial low-to-medium-speed maglev line in China. The focus is on two types of pre-stressed double-track concret

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26

Urbański, Konrad. "Sensorless control of SRM at medium speed range." Archives of Electrical Engineering 60, no. 2 (2011): 179–85. http://dx.doi.org/10.2478/v10171-011-0017-4.

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Sensorless control of SRM at medium speed rangeThe paper deals with the problem of position and speed estimation methods in SRM (Switched Reluctance Motor) drive equipped with hysteresis band current controller with MRAS (Model Reference Adaptive System) type observer. An adaptive flux model uses equation set of one-dimensional equations instead of one two-dimensional equation. The reference model is the formal one. Instead of measured current the observer utilizes reference current. Such drive system works well at speed range up to 600 rad/s. The observer's gains must change depend on the spe

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27

Alshbib, Mussaab M., Mohamed Mussa Elgbaily, Ibrahim Mohd Alsofyani, and Fatih Anayi. "Performance Enhancement of Direct Torque and Rotor Flux Control (DTRFC) of a Three-Phase Induction Motor Over the Entire Speed Range: Experimental Validation." Machines 11, no. 1 (2022): 22. http://dx.doi.org/10.3390/machines11010022.

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This paper proposes a robust and effective method of direct torque and rotor flux control (DTRFC) strategy for an induction motor (IM). The described scheme ensures the elimination of uncontrollable angles (UCAs) over the entire speed range. This means that each voltage vector (VV) produces the required effect of both torque and flux without any counteracting effect. First, the behaviour of the DTRFC algorithm was analysed at low and high speeds in terms of determining the values of UCAs. Through the analysis, it was found that the basic scheme suffered from UCAs at medium and high speeds. Acc

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28

Sardo, Filipe, and Zelia Serrasqueiro. "Does dynamic trade-off theory explain Portuguese SME capital structure decisions?" Journal of Small Business and Enterprise Development 24, no. 3 (2017): 485–502. http://dx.doi.org/10.1108/jsbed-12-2016-0193.

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Purpose The purpose of this paper is to analyse if capital structure decisions of small- and medium-sized Portuguese firms are in accordance with the predictions of dynamic trade-off theory, more precisely, the speed of adjustment of short-term debt (STD) and long-term debt (LTD) towards the respective target debt ratios. Design/methodology/approach Based on two samples of Portuguese firms, 1,377 small-sized firms and 811 medium-sized firms, dynamic estimators were used for the treatment of data obtained from the Amadeus database for the period 2007-2011. Findings The results indicate that sma

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29

Miharja, Jaja, Heru Santosa, and Hery Adrial. "Measurement Of Aluminium Alloy 6061 Diameter Results Using Profile Projector." Piston: Journal of Technical Engineering 6, no. 2 (2023): 8. http://dx.doi.org/10.32493/pjte.v6i2.25127.

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The writing of this study was conducted to measure the circle of variations of aluminum alloy 6061 with a diameter of 20mm, 25mm and 30mm, respectively the speed on the CNC frais engine is different, among others, low speed 500 Rpm, medium speed 700 Rpm and high speed of 1000 Rpm. In addition, the results of frais CNC 3 Axis machine are validated using Profile Projector measuring tool that has a higher accuracy rate compared to other measuring instruments.The purpose of the study was to determine the effect of CNC engine speed with low, medium and high speeds on the dimensions of diameters of

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30

Hong, Sung-Ho. "A literature review of lacquer formation in medium-speed and low-speed engines." Journal of Mechanical Science and Technology 30, no. 12 (2016): 5651–57. http://dx.doi.org/10.1007/s12206-016-1134-1.

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31

Kawakami, Masayoshi, and Toshiyuki Okeya. "Investigation on Combustion in Medium-Speed Diesel Engines." JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN 20, no. 8 (1985): 462–72. http://dx.doi.org/10.5988/jime1966.20.462.

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32

Allocca, Michael A., and Eric H. Kessler. "Innovation Speed in Small and Medium-Sized Enterprises." Creativity and Innovation Management 15, no. 3 (2006): 279–95. http://dx.doi.org/10.1111/j.1467-8691.2006.00389.x.

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33

Stöber-Schmidt, Claude-Pascal, Marko Püschel, and Martin Drescher. "Exhaust Gas Recirculation for Medium-Speed Diesel Engines." MTZ industrial 1, no. 1 (2011): 72–77. http://dx.doi.org/10.1365/s40353-011-0014-5.

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34

N.P. ZUBOV. "Features of Medium-Range High-Speed Strike UAVs." Military Thought 33, no. 002-003 (2024): 82–89. http://dx.doi.org/10.21557/mth.98437710.

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35

Tschalamoff, Titus. "Exhaust gas recirculation in medium speed gas engines." MTZ worldwide 65, no. 11 (2004): 30–32. http://dx.doi.org/10.1007/bf03227716.

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36

Heim, Klaus M., and Marco Coppo. "Advanced Common Rail Injection for Medium Speed Engines." MTZ industrial 3, no. 2 (2013): 28–35. http://dx.doi.org/10.1007/s40353-013-0096-3.

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37

Vervaeke, Lieven, Tim Berckmoes, and Sebastian Verhelst. "Medium Speed Diesel Engine for IMO Tier III." MTZ industrial 4, no. 1 (2014): 14–21. http://dx.doi.org/10.1007/s40353-014-0117-x.

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38

Kolehmainen, Jere, and Jouni IkÄheimo. "Motors With Buried Magnets for Medium-Speed Applications." IEEE Transactions on Energy Conversion 23, no. 1 (2008): 86–91. http://dx.doi.org/10.1109/tec.2007.914331.

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39

Okamoto, Satoshi, Yoshiro Furukawa, and Hiromi Kondo. "Combustion of Degraded Fuel in Small or Medium-Sized Medium Speed Diesel Engine." JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN 20, no. 5 (1985): 332–38. http://dx.doi.org/10.5988/jime1966.20.332.

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40

Li, Xiang, Yuze Cui, and Xinzhang Wu. "Sensorless Control of Surfaced-Mounted Permanent Magnet Synchronous Motor in a Wide-Speed Range." Electronics 13, no. 6 (2024): 1131. http://dx.doi.org/10.3390/electronics13061131.

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This paper delves into a comprehensive study of a wide-speed-range sensorless control approach for surface-mounted permanent magnet synchronous motors (SPMSMs). In the low-speed range, a novel high-frequency pulse voltage injection (HFPVI) method is introduced for rotor position estimation, which does not depend on motor saliency and is well-suited for SPMSMs. This method incorporates a second-order generalized integrator (SOGI) and a new modulation signal to enhance the accuracy of rotor position estimation. For medium-to-high speeds, an improved super-twisting sliding mode observer (STSMO) u

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41

Lin, Richard J. T., Jeroen van Houts, and Debes Bhattacharyya. "Machinability investigation of medium-density fibreboard." Holzforschung 60, no. 1 (2006): 71–77. http://dx.doi.org/10.1515/hf.2006.013.

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Abstract For many applications, the perceived quality of a medium-density fibreboard (MDF) is influenced by the appearance of its machined surface. The behaviour of MDF has been studied by passing a cutting tool through it at a relatively low speed. A digital camera was used that travels synchronously with the tool and the deformation occurring in front of the tool tip was recorded. The magnification of approximately 30× also allows the individual fibres or bundles to be clearly observed. Photographic images have also been taken of the same machining process at a much higher speed, producing s

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Huang, Qi, Yun Qing Li, Cheng Kei Liu, and Xiao Li Lai. "Research on Intake System of Motorcycle Engine to Obtain High Torque at Low and Medium Speed." Applied Mechanics and Materials 233 (November 2012): 266–69. http://dx.doi.org/10.4028/www.scientific.net/amm.233.266.

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The new intake system is designed and the intake pipe is changed in order to get high torque at low and medium speed. After the intake parameters are changed, the intake dynamic effect is utilized to increase volumetric efficiency and torque at the low and medium speed by theory analyses. Through further research, it is found that intake pipe length has a quite great influence on torque characteristic. Extending intake pipe length can improve engine torque at low and medium speed and its maximum torque point is shifted from high speed scope to low and medium speed scope.

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Cui, Gao Jian, Sheng Yuan Jiang, Jiang Yong Li, and Wen Fei Wang. "Mechanism of Medium Pressure Difference Pipe Robot Speed Fluctuation." Advanced Materials Research 753-755 (August 2013): 2046–49. http://dx.doi.org/10.4028/www.scientific.net/amr.753-755.2046.

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Medium pressure type pipe robot speed fluctuation mechanism is studied. we consider that the causes of speed fluctuation are Frictional resistance mutations. Compression effect of Fluids medium and the reaction of robot speed. According to the different between the motion state of pipe robot and frictional resistance mutation trend, we make numerical simulation by using Matlab to determine the speed fluctuations law on different parameters.

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Yang, Ying, Jiangmin Deng, Laisheng Tong, Xiaoсhun Li, Qibiao Peng, and Wenhui Zhang. "Study on the optimization of linear induction motor traction system for fast-speed maglev train." Transportation Systems and Technology 4, no. 3 suppl. 1 (2018): 156–64. http://dx.doi.org/10.17816/transsyst201843s1156-164.

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Background: The short stator linear induction motor (LIM) is normally used in medium-low speed maglev train. The restriction by mounting space on bogie and motor input voltage from the third power supply rail lead that the maximum speed of medium-low speed maglev train can reach no more than 120 km/h. Aim: In this paper, by means of the LIM design optimization, improvement of the LIM force characteristic in high speed range, the maximum speed of medium-low speed maglev train can reach 160 km/h. Methods: After comparing the LIM theoretical calculation and actual test data, it

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45

Yang, Man Zhi, Zhi Feng Peng, Fang Liu, Yi Liang Peng, and Xiao Ling Sun. "Finite Element Analysis on Medium-Speed Mill-Foundation Coupled System." Applied Mechanics and Materials 166-169 (May 2012): 510–13. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.510.

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A medium speed mill-foundation coupled finite element model was established using ANSYS. The modal and harmonic responses of medium-speed mill were analyzed. The influence of the number of vibration isolators and the ratio of foundation bedplate to equipment on the vibration of mill was analyzed. The shock absorption measures of medium-speed mills were discussed. To get good vibration isolation effect, the maximum horizontal vibration displacement of medium-speed mill with spring vibration-isolated foundation is suggested as 50 μm, and the ratio of foundation bedplate to equipment as 3.0±0.2.

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46

Woodward, Eilis, Jillian Haszard, Anna Worsfold, and Bernard Venn. "Comparison of Self-Reported Speed of Eating with an Objective Measure of Eating Rate." Nutrients 12, no. 3 (2020): 599. http://dx.doi.org/10.3390/nu12030599.

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Slow eating may be beneficial in reducing energy intake although there is limited research quantifying eating rate. Perceived speed of eating was self-reported by 78 adults using a standard question “On a scale of 1–5 (very slow–very fast), how fast do you believe you eat?” Timing the completion of meals on three occasions was used to assess objective eating rate. The mean (SD) speeds of eating by self-reported categories were 49 (13.7), 42 (12.2), and 35 (10.5) g/min for fast, medium, and slow eaters, respectively. Within each self-reported category, the range of timed speed of eating resulte

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47

Shatrov, M. G., A. S. Khachiyan, V. V. Sinyavskiy, I. G. Shishlov, and A. V. Vakulenko. "PHYSICAL MODELING OF GAS-DIESEL ENGINE OPERATIONAL PROCESS." Traktory i sel hozmashiny 84, no. 4 (2017): 3–10. http://dx.doi.org/10.17816/0321-4443-66253.

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Conversion of engines to natural gas feeding is actual due to the lower cost of gas fuel and improvement of environmental performance. Within the works on creation of high- and medium-speed transport engines powered by natural gas conducted at MADI, an electronic control system and a modular gas supply system for a gas-diesel were developed and manufactured. This approach allowed using of three modules for feeding of the medium-speed gas diesel 6ChN20/28 and one module for the high-speed gas diesel 6ChN10.7/12.4. For experimental testing of the systems, at MADI there was made the conversion of

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48

Omura, Y., Y. Kitaya, and T. Kozai. "Visualization and Analysis of Air Currents in the Plant Tissue Culture Vessel." HortScience 30, no. 4 (1995): 874E—874. http://dx.doi.org/10.21273/hortsci.30.4.874e.

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Air currents, and consequent diffusion processes, in the plant tissue culture vessel are slow and limit photosynthesis, transpiration, and uptake of water and nutrients by in vitro plantlets. Air currents in Magenta-type and Mayonnaise bottle-type culture vessels were visualized using fine particles of feathery crystal of metaldehyde [(CH3CHO)4] as tracers. Pictures of visualized air currents were recorded by the video camera. Air current speeds in the culture vessel were determined by analyzing the changes in video pictures with time. Air current speed around the culture vessel was set at 0.1

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Lynch, Kieran J., David J. Brayshaw, and Andrew Charlton-Perez. "Verification of European Subseasonal Wind Speed Forecasts." Monthly Weather Review 142, no. 8 (2014): 2978–90. http://dx.doi.org/10.1175/mwr-d-13-00341.1.

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Abstract Analysis of the forecasts and hindcasts from the ECMWF 32-day forecast model reveals that there is statistically significant skill in predicting weekly mean wind speeds over areas of Europe at lead times of at least 14–20 days. Previous research on wind speed predictability has focused on the short- to medium-range time scales, typically finding that forecasts lose all skill by the later part of the medium-range forecast. To the authors’ knowledge, this research is the first to look beyond the medium-range time scale by taking weekly mean wind speeds, instead of averages at hourly or

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Roychoudhuri, S. K., and Nupur Bandyopadhyay. "Thermoelastic wave propagation in a rotating elastic medium without energy dissipation." International Journal of Mathematics and Mathematical Sciences 2005, no. 1 (2005): 99–107. http://dx.doi.org/10.1155/ijmms.2005.99.

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A study is made of the propagation of time-harmonic plane thermoelastic waves of assigned frequency in an infinite rotating medium using Green-Naghdi model (1993) of linear thermoelasticity without energy dissipation. A more general dispersion equation is derived to examine the effect of rotation on the phase velocity of the modified coupled thermal dilatational shear waves. It is observed that in thermoelasticity theory of type II (Green-Naghdi model), the modified coupled dilatational thermal waves propagate unattenuated in contrast to the classical thermoelasticity theory, where the thermoe

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