When the field of microfluidics emerged in the early 1990s, it was primarily focused
on the development of analytical microdevices. Since then, microfluidics has expanded
its influence into virtually every branch of science and engineering. There are many
driving forces behind this explosive growth. To name a few:
• Scaling properties afforded by miniaturization are desirable for many
applications. For example, enhanced mass transfer and heat dissipation
enable faster chemical separations without sacrificing separation
With the amazing advances of scientific research, Hydrodynamics - Theory and Application presents the engineering applications of hydrodynamics from many countries around the world. A wide range of topics are covered in this book, including the theoretical, experimental, and numerical investigations on various subjects related to hydrodynamic problems. The book consists of twelve chapters, each of which is edited separately and deals with a specific topic. The book is intended to be a useful reference to the readers who are working in this field....
UFC 3-450-01 15 May 2003
UNIFIED FACILITIES CRITERIA (UFC)
NOISE AND VIBRATION CONTROL
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.UFC 3-450-01 15 May 2003
UNIFIED FACILITIES CRITERIA (UFC) NOISE AND VIBRATION CONTROL Any copyrighted material included in this UFC is identified at its point of use. Use of the copyrighted material apart from this UFC must have the permission of the copyright holder.
U.S. ARMY CORPS OF ENGINEERS (Preparing Activity) NAVAL FACILITIES ENGINEERING COMMAND AIR FORCE CIVIL ENGINEER SUPPORT AGENCY
Record of Changes (changes are indicated by \1\ ...
An additional benefit of hydrogen peroxide and Fenton's Reagent is the
temporary increase of oxygen levels in and around the treatment area. The
increased oxygen levels at the fringes of the treatment area can enhance naturally
occurring aerobic biodegradation processes that reduce contaminant mass. While
there may be concerns about oxidizing hydrocarbon-degrading bacteria in the
chemical oxidation treatment area, many studies have shown that soil cannot be
readily sterilized by Fenton's Reagent and that microbial populations rapidly
rebound following chemical oxidation treatment.
Based on the above observations, let us assume as a working hypothesis that the Earth can be
modelled as a rotating body where the centre of mass is offset from the principal axis of rotation.
For the purposes of this paper the author will consider the two principal approaches to determine
the circumferential forces associated with an unbalanced rotating body...
In modern usage, the term is used to describe devices capable of performing mechanical work, as in the original steam engine. In most cases the work is produced by exerting a torque or linear force, which is used to operate other machinery which can generate electricity, pump water, or compress gas. In the context of propulsion systems, an air-breathing engine is one that uses atmospheric air to oxidise the fuel carried rather than supplying an independent oxidizer
This report presents an overview of the field of building engineering physics
and identifies opportunities for developments that will benefit society as a
whole, as well as employers, universities, professional engineering institutions
and in particular professionals who are following careers with building
engineering physics as the basis. The report makes key recommendations for
Government policy, academic and industry research directions and professional
development in the field to achieve the skill levels necessary to deliver mass
market low carbon buildings.
Dynein, which is a minus-end-directed microtubule motor, is crucial to a
range of cellular processes. The mass of its motor domain is about 10 times
that of kinesin, the other microtubule motor. Its large size and the diffi-culty of expressing and purifying mutants have hampered progress in
The first half of the 20th century saw a trend to increasing engine power, particularly in the American models. Design changes incorporated all known methods of raising engine capacity, including increasing the pressure in the cylinders to improve efficiency, increasing the size of the engine, and increasing the speed at which power is generated. The higher forces and pressures created by these changes created engine vibration and size problems that led to stiffer, more compact engines with V and opposed cylinder layouts replacing longer straight-line arrangements....
Abstract This paper presents an implemented approach to part-mating of three-dimensional non-cylindrical parts with a 6 DOF manipulator, considering uncertainties in modeling, sensing and control. The core of the proposed solution is a reinforcement learning algorithm for selecting the actions that achieve the goal in the minimum number of steps. Position and force sensor values are encoded in the state of the system by means of a neural network. Experimental results are presented for the insertion of diﬀerent parts – circular, quadrangular and triangular prisms – in three dimensions.
Any physical situation, whether it involves a single object or a complete system, can be described in terms of a number of recognisable properties which the object or system possesses. For example, a moving object could be described in terms of its mass, length, area or volume, velocity and acceleration. Its temperature or electrical properties might also be of interest, while other properties - such as density and viscosity of the medium through which it moves - would also be of importance, since they would affect its motion....
Chapter 3 - Kinetic concepts for analyzing human motion. In this chapter, you will learn to: Define and identify common units of measurement for mass, force, weight, pressure, volume, density, specific weight, torque, and impulse; identify and describe the different types of mechanical loads that act on the human body; identify and describe the uses of available instrumentation for measuring kinetic quantities; distinguish between vector and scalar quantities; solve quantitative problems involving vector quantities using both graphic and trigonometric procedures.
Chapter 14 - Angular kinetics of human movement. In this chapter you will learn: Identify the angular analogues of mass, force, momentum, and impulse; explain why changes in the configuration of a rotating airborne body can produce changes in the body's angular velocity; identify and provide examples of the angular analogues of Newton's laws of motion; define centripetal force and explain where and how it acts.
C H A P T E R
1. Definition. 2. Classifications of Machine Design. 3. General Considerations in Machine Design. 4. General Procedure in Machine Design. 5. Fundamental Units. 6. Derived Units. 7. System of Units. 8. S.I. Units (Inter national System of Units). 9. Metre. 10. Kilogram. 11. Second. 12. Presentation of Units and their values. 13. Rules for S.I. Units. 14. Mass and Weight. 15. Inertia. 16. Laws of Motion. 17. Force. 18. Absolute and Gravitational Units of Force. 19. Moment of a Force. 20. Couple. 21. Mass Density. 22. Mass Moment of Inertia. 23.
The article deals with a research on the design and manufacturing of a dynamic balancing machine, using dynamic load sensors and optical one, for calculating the unbalanced mass in thick rotating part on two choosen correction planes. Dynamic load sensors attached to the bearing supports of the machine help us determine the reaction forces generated by the unbalanced mass of the rotor. These load signals are filtered and digitized at a sampling rate which is synchronous to the rotor via an optical sensors.
Perhaps nothing is so ingrained in our senses as the perpetual pulling of the earth on our surroundings. It’s always there, never changing. It’s been hugging solids, liquids and gases to the earth’s surface for over 4 billion years. Earth’s gravity is built into our descriptions of our world with words like up, down, and weight. Exactly what is weight? A weight is a force, nothing more. Your weight is the pull of earth’s gravity on your body. Likewise, the weight of your car is the force of the earth’s attraction for it. The greater the mass is, the...
Satellite altimetry was developed in the 1960s soon after
the flight of artificial satellites became a reality. From the
vantage point in space, a radar altimeter is able to measure
the shape of the sea surface globally and frequently. Such
measurements have a wide range of applications to oceanography,
geodesy, and geophysics. The results are often revolutionary.
For example, in oceanography; it takes a ship weeks
or months to cross the ocean making measurements while
the ocean is constantly changing its circulation, temperature,
NOMENCLATURE A b Cp C8 di d2 e E F fb / M n P q r s t v z Cross section Width Angular factor Service factor Diameter of driving pulley Diameter of driven pulley Center distance Modulus of elasticity Force Bending frequency Datum length of flexible connector Torque Speed Power Mass per length Radius Belt thickness Pitch Velocity Number