Xem 1-20 trên 99 kết quả Control of pressure
  • Tham khảo sách 'tolley’s basic science and practice of gas service gas service technology volume 1', y tế - sức khoẻ, y học thường thức phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Pest and disease management continues to be an important challenge to the agricultural community. Confronted with the shifts in pest pressure and the rise in new pest and crop problems, coupled with public concern over pesticide use and more stringent environmental regulations, today’s crop producer must exhibit good stewardship and stay current with new technologies in order to produce high-quality crops in a profitable manner.

    pdf358p 951864273 11-05-2012 79 23   Download

  • TẠP CHÍ PHÁT TRIỂN KH&CN, TẬP 9,Số 4-2006 Vu Tu Hoai(1), Nguyen Thanh Nam(2) (1) J.V. “Vietsovpetro” (2) University of Technology, VNUHCM (Manuscript Received on December 12 th, 2005, Manuscript Revised March 27 th, 2006) ABSTRACT: Calculation of pressure drop along gas pipelines is an important activity in order to ensure safety and effectiveness in petroleum gas transportation. We can’t control the transportation process unless we understand that technology.

    pdf11p phalinh19 19-08-2011 21 2   Download

  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Continuous control of endotracheal cuff pressure and tracheal wall damage: a randomized controlled animal study...

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  • Process plants consist of hundreds, or even thousands, of control loops all networked together to produce a product to be offered for sale. Each of these control loops is designed to keep some important process variable such as pressure, flow, level, temperature, etc. within a required operating range to ensure the quality of the end product. Each of these loops receives and internally creates disturbances that detrimentally affect the process variable, and interaction from other loops in the network provides disturbances that influence the process variable....

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  • On March 20, 1905, a disastrous boiler explosion occurred in a shoe factory in Brockton, Massachusetts, killing 58 persons, injuring 117 others, and causing a quarter of a million dollars in property damage. For years prior to 1905, boiler explosions had been regarded as either an inevitable evil or “an act of God” (see Figs. 1.1 and 1.2).

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  • In this Unit, the operation of each block on Main Unit will be introduced. After study complete, users are able to use KL-62001 as measurement and assist tool for KL-620 experiments. Discussion: When connecting CHIP to the GND, the analog signal received from A/D Converter will send to single chip for decoding and output to 7 segment display? When sending the analog signal to the PC, the signal should be converted to digital format. As the result, this technique will be used when connecting the main unit to the PC. Check next exercise?...

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  • The search for oil occurs in geological sediments, as opposed to volcanic rocks. Several processes are involved in the creation of sediments. First, the inland continental volcanic rock is continuously being weakened and eroded by weathering processes (mechanical (through water, ice and wind) and chemical erosion). Secondly and simultaneously, the eroded material is being transported by water, ice and wind and gradually the material may be broken down into smaller pieces (from boulders to gravel, to sand, to silt and finally to clay).

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  • Diesel engines, also known as CI engines, possess a wide field of applications as energy converters because of their higher efficiency. However, diesel engines are a major source of NOX and particulate matter (PM) emissions. Because of its importance, five chapters in this book have been devoted to the formulation and control of these pollutants. The world is currently experiencing an oil crisis. Gaseous fuels like natural gas, pure hydrogen gas, biomass-based and coke-based syngas can be considered as alternative fuels for diesel engines.

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  • Contents Introduction operators function valve size actuator control typical valve poppet valves spool valves disc seals dynamic seals glandless spool static sealing balanced spool spool overlap other valve designs pressure switches logic valves flow regulators quick exhaust valve solenoid valves core range.

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  • Technological advances in recent years have resulted in the development of the programmable logic controller (PLC) and a consequential revolution of control engineering. This book, an introduction to PLCs, aims to ease the tasks of practicing engineers coming into contact with PLCs for the first time.

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  • State the mechanism for steam generation in a PWR. Using simplified diagrams, identify and explain the purpose of the major components and equipment involved with a PWR. Identify the equipment used to control reactor power.

    ppt24p giotletinh_hd2009 14-10-2013 45 8   Download

  • The term stress was introduced into the biomedical field by Hans Selye (1936) in reference to a General Adaptation Syndrome which would consist of all non-specific systemic reactions that occur during an intense and chronic exposure to a stressor (e.g., pressure at work and poor diet). This syndrome would be different from the specific adaptive reactions (such as muscle hypertrophy caused by exercise performed on a regular basis) and immune responses (Selye, 1936).

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  • Introduction • The ZMP Notion • The Difference between ZMP and the Center of Pressure (CoP) Modeling of Biped Dynamics and Gait Synthesis Single-Support Phase • Double-Support Phase • Biped Dynamics • Example

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  • The perspective of this book is that the steady - state separation model should also be the basis for developing the control confi guration for the column. Yes, a steady - state model! Although the technology to do so is widely available, extending to a dynamic model is not necessary for developing the column control confi guration. The most crucial component of every process control application is developing the piping and instrumentation (P & I) diagram that defi nes the control confi guration for the process and for each unit operation, such as distillation, within that process.

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  • Biological solution using strain Lipomyces starkeyi 7.1, which can produce viscous membranes to improve dry soil is considered to be sustainable for slope land improvement. The results of research on Lipomycin M ability to keep effective water in the soil of Me Linh District, Vinh Phuc Province show that in the soil samples cultivated traditional medicinal trees, the total amounts of effective water in the soil fertilized Lipomycin M (taken out under pressure pF 2.5-4.

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  • In the second half of the 1990s economic growth has been favourable stimulated by a clear fall in inte- rest rates. Unemployment was rapidly decreasing and the demand for housing has been growing causing house prices to double since 1991. Production of new housing in urban areas has not increased to the same extent as the population. A shortage of housing and high house prices, especially in the capital city of Oslo and surrounding municipalities, have been the result.

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  • These exercises have been made to fit the content of the book Pressure Control During Oil Well Drilling http://bookboon.com/no, a book that was revised and updated in 2012, mostly on basis of input from my students). Also in present book all the exercises have been solved by students in the relevant course at the Department of Petroleum Engineering and Applied Geophysics at NTNU of Trondheim, Norway. It would be highly appreciated if the readers contacted me at pal.skalle@ntnu.no with comments to this collection of exercises....

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  • A well constructed drawing should have all the parts and they should be put together beautifully, but that is not what you should see when you look at the drawing. What you should see is the emotion. In a drawing of a starving man you should see fear and hunger and despair, and you should feel this, plus pity and revulsion and anger. All gestures won’t be quite that dramatic, but all gestures are certainly more than their parts. Do this experiment: get a wooden match and look at it. That represents your model or, character in animation. Then...

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  • A randomized controlled trial of interventions to enhance patient-physician partnership, patient adherence and high blood pressure control among ethnic minorities and poor persons: study protocol NCT00123045 Lisa A Cooper*1,2,3,4, Debra L Roter5, Lee R Bone5, Susan M Larson5, Edgar R Miller III1,2,3, Michael S Barr6, Kathryn A Carson3 and David M Levine2,5 Address: 1Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins University, Baltimore, Maryland, USA, 2Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA, 3Department o...

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