... interpretation and application of, 12 modification and expansion of, 11 and other standards of behavior, 13, 14 private activities and, 60, 110 purpose of, 14 scope of, 5-12 staff members and, 10 financial ... Ethical Journalism A Handbook of Values and Practices for the News and Editorial Departments September 2004 Ethical Journalism A Handbook of Values and Practices for the News and Editorial Departments ... 83 advice and, 39-41 borrowed equipment and, 56, 57, 144 collaboration and testimonials and, 58, 59 competitions and contests and, 50-55 speaking engagements and, 42-49 Times ownership of, 86 withdrawal
Ngày tải lên: 06/03/2014, 11:20
... spectrum of tolerances to waterlogging. Their degree of tolerance is often estimated from either duration of survival or measured growth and productivity in forest stands or ... presence of lenticels and the de- gree of root senescence were assessed visual- ly. Root systems were divided thereafter into old roots, white tips and neoformed roots, and ... species: flooding induced a rapid decay of preexist- ing roots, with senescence and disappear- ance of white tips, and necrosis of tap root and flooded lateral roots. Hypertrophied
Ngày tải lên: 08/08/2014, 23:21
Handbook of Water and Wastewater Treatment Plant Operations - Chapter 10 pdf
... weight of one because of the single proton The atomic weight of an element is equal to the total number of protons and neutrons in the nucleus of an atom of an element In order to gain an understanding ... Adsorption Coagulation Taste and odor removal (water treatment) Water softening Recarbonation Ion exchange softening Scale and corrosion control 302 Handbook of Water and Wastewater Treatment Plant ... processes 10.10.7 WATER SOFTENING Temperature Influent quality Alkalinity Type and amount of coagulant used Type and length of flocculation Type and length of mixing 10.10.6 TASTE AND ODOR REMOVAL Although
Ngày tải lên: 11/08/2014, 10:22
Handbook of Water and Wastewater Treatment Plant Operations - Chapter 14 pdf
... Location — Name of water body and place of study and longitude and latitude Date and time Site — Point of sampling (sampling location) Name of collector Biomonitoring, Monitoring, Sampling, and Testing ... colors of insects and larvae found in streams of lakes This System also allows the recording of the color of algae and bacteria on streambeds Note: Do not leave color standard charts and comparators ... Regardless of the equipment, the process for compositing and transferring the sample is basically the same The decision is one of cost and convenience (From Spellman, F.R., Spellman’s Standard Handbook
Ngày tải lên: 11/08/2014, 10:22
Handbook of industrial and hazardous wastes treatment - Part 3 pdf
... woods like poplar and soft woods like balsam, fir, hemlock Hard and soft woods Hard woods like aspen, oak, alder, birch, and soft wood sawdust and chips Any type of hard and soft wood, nonwood fiber ... Treatment of Pulp and Paper Mill Wastes Suresh Sumathi Indian Institute of Technology, Bombay, India Yung-Tse Hung Cleveland State University, Cleveland, Ohio, U.S.A. 10.1 POLLUTION PROBLEMS OF PULP AND ... acetic acid (30–60% of COD) and methanol (10–25% of COD). Anaerobic biodegradability of the condensates is typically 50–90% of COD and sulfur compounds are the major inhibitors of methanogenic activity
Ngày tải lên: 11/08/2014, 17:22
The efficacy and safety of peripheral intravenous parenteral nutrition vs 10% glucose in preterm infants born 30 to 33 weeks’ gestation: A randomised controlled trial
... were required to be enrolled and randomised before 24 h of age Randomisation and blinding Infants were randomised to one of two groups: the peripheral parenteral nutrition (P-PN) group or control ... clinical practice between countries and centres reflecting the lack of evidence in the nutritional management of this population [10, 11, 28–30] Delivery of parenteral nutrition using a central line ... 2–3% of the infant population and a large proportion of neonatal admissions This population of preterm infants often requires transient respiratory support, are at risk of hypoglycemia and feed
Ngày tải lên: 21/09/2020, 13:48
Handbook of Water and Wastewater Treatment Plant Operations - Chapter 5 pdf
... 5.7.1 LAW OF CONSERVATION OF ENERGY Many of the principles of physics are important to the study of hydraulics. When applied to problems involving the flow of water, few of the principles of physical ... operating properly and efficiently, you must understand the basics of hydraulics — the laws of force, motion, and others. As stated previously, most applications of hydraulics in water and wastewater ... remember that the science of water hydraulics is the direct result of two immediate and enduring problems: “The acquisition of fresh water and access to continuous strip of land with a suitable gradient
Ngày tải lên: 11/08/2014, 10:22
Handbook of Water and Wastewater Treatment Plant Operations - Chapter 12 pdf
... lithology (i.e., the physical character of rock) and hydrologic pathways In areas of very high runoff, the contribution of 348 Handbook of Water and Wastewater Treatment Plant ... of the trout, all of the insects of each specific kind, and all of a certain aquatic plant type in the stream or pond at the time of the study. When ecologists study a group of the same kind of ... of a huge, slow, and inexorably moving glacier Instead, this soil and rock ground is exposed to the falling drops of snow-melt because of a combination of wind and. .. Ecology and
Ngày tải lên: 11/08/2014, 10:22
Handbook of Micro and Nano Tribology P4
... fractal surface of profile dimension D and surface dimension D + 1 In the study of geomorphology of Earth, Mandelbrot (1975) found that the cumulative size distribution of islands on Earth’s ... volume rate of wear, · V , and to establish the conditions when catastrophic failure may occur due to wear. Despite the common experiences of friction and wear and the knowledge of its existence ... diameter of a finger) and a vertical scale of about 100 µm (typical resolution of the finger). A good optical microscope is also a roughness sensor that can observe lateral length scales of the order of
Ngày tải lên: 18/10/2013, 09:15
Handbook of Micro and Nano Tribology P8
... a function of the number of cycles for virgin silicon and silicon surfaces lubricated with Z-15 and Z-Dol lubricants, Figure 8.8. An area of 1 × 1 µm was scanned at a normal force of 300 nN. ... dense films of long-chain molecules. Bhushan et al. (1995b,c) conducted micro- and macroscale friction and wear studies on single-grafted and double-grafted octodecyl (C 18 ) and LB films and their ... loads of 0.1 N and average sliding speed of 0.8 mm/s a b FIGURE 8.13 (a) Wear depth as a function of normal force after one scan cycle (b) wear depth as a function of number of scan
Ngày tải lên: 18/10/2013, 09:15
Handbook of Micro and Nano Tribology P14
... of magnetic media including polished and textured thin-film rigid disks, MP, BaFe and ME tapes, and PET tape substrate For typical values of coefficients of friction of polished and ... solution of hydrocarbon and fluorocarbon molecules The resulting film consists of discrete islands of hydrocarbon in a sea of fluorocarbon... Roughness (σ and P-V distance), Micro- and ... of friction of a 4-nm-thick lubricant film was about twice that of a 2-nm-thick film Mate (1993a) measured the coefficient of friction of unlubricated polished and textured disks and
Ngày tải lên: 18/10/2013, 09:15
Handbook of Micro and Nano Tribology P16
... use of X-ray photolithography, electroforming, and molding processes. One of the limi- tations of silicon microfabrication processes originally used for fabrication of MEMS devices is lack of ... diaphragms and X-ray masks. For a summary of SiC devices and applications, see Harris (1995). Table 16.1 compares selected bulk properties of SiC and Si(100). Because of the large band gap of SiC, ... review of macro- and micro/nanotribological studies of single-crystal silicon and polysilicon, oxidized and implanted silicon, doped and undoped polysilicon films and SiC films. A summary of limited
Ngày tải lên: 25/10/2013, 12:15
Handbook of Micro and Nano Tribology P5
... case of an eraser and its residue. A particle of eraser residue may be roughly spherical, with a radius R of the order of 100 µ m, whereas the eraser itself may have dimensions in the range of ... properties of the surface and near-surface region are important for small particles, as will be emphasized in Sections 5.3 and 5.4. The weight of a sphere of density ρ is 4 / 3 ρπ R 3 and its attraction ... college physics, chemistry, and calculus, and Chapter 2 of this book. We draw broadly from a variety of existing texts and conference proceedings listed at the end of this chapter, wherein many
Ngày tải lên: 09/11/2013, 03:15
Tài liệu Handbook of Micro and Nano Tribology P9 pptx
... (Snook and van Megan, 1979, 1980, 1981; van Megan and Snook, 1979, 1981; Kjellander and Marcelja, 1985a,b; Tarazona and Vincente, 1985; Henderson and Lozada-Cassou, 1986; Evans and Parry, ... 9.9 Rheology of Molecularly Thin Films: Nanorheology Different Modes of Friction: Limits of Continuum Models • Viscous Forces and Friction of Thick Films: Continuum Regime • Friction of Intermediate ... Friction • Simple Molecular Model of Energy Dissipation ε 9.12 Friction and Lubrication of Thin Liquid Films Smooth and Stick-Slip Sliding • Role of Molecular Shape and Liquid Structure 9.13 Stick-Slip
Ngày tải lên: 17/12/2013, 11:15
Tài liệu Handbook of Mechanical Engineering Calculations P3 pdf
... combustion and increases the weight of the products of combustion per pound (kilogram) of coal burned. Therefore, the weight of the products of combustion is the sum of the weight of the combustion ... content of the air,... content of the air, or (28.95 / 18)(0.013) ϭ 0.0209, say 0.021 mol of water per mol of air The product of this and the moles of air gives the total moles of Downloaded ... cu m) of natural gas; 1300 cu ft of air (36.8 cu m) per gal (0.003785 cu m) of No. 2 fuel oil; 1450 cu ft of air (41 cu m) per gal of No. 5 fuel oil; 1500 cu ft of air (42.5 cu m) per gal of No.
Ngày tải lên: 17/12/2013, 11:15
Tài liệu Handbook of Mechanical Engineering Calculations P5 pdf
... pressure of 500 psia (3445 kPa) and a temperature of 740 Њ F (393.3 Њ C). A portion of this 500-psia (3445-kPa) steam is used in a closed feedwater heater to increase the temperature of 1,000,000 ... the number of tubes per pass Assume the heater has only one pass, and compute the number of tubes required. Once the number of tubes is known, a decision can be made about the number of passes ... a boiler-drum pressure of 460 lb/ in 2 (abs) (3171.7 kPa), a turbine throttle pressure of 415 lb/ in 2 (abs) (2861.4 kPa) and 725 Њ F (385.0 Њ C), and a turbine capacity of 10,000 kW (or 13,410
Ngày tải lên: 17/12/2013, 11:15
Tài liệu Handbook of Mechanical Engineering Calculations P9 pdf
... subject to the Terms of Use as given at the website. AIR AND GAS COMPRESSORS AND VACUUM SYSTEMS [...]... because of the possibility of scale and impurities buildup (Ingersoll-Rand Co.) Downloaded ... is subject to the Terms of Use as given at the website. AIR AND GAS COMPRESSORS AND VACUUM SYSTEMS AIR AND GAS COMPRESSORS AND VACUUM SYSTEMS 9.7 TABLE 1 Specifications of Typical Air Motors Rated ... the Terms of Use as given at the website. Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 9.2 PLANT AND FACILITIES ENGINEERING FIGURE 1 Typical compressed-air system main and branch
Ngày tải lên: 17/12/2013, 11:15
Tài liệu Handbook of Mechanical Engineering Calculations P12 pdf
... kg) of water ice in 24 h, the rate of heat removal is a ton (3.516 kW) of refrigeration. Since the heat of melting (sublimation) of 1 lb (0.454 kg) of water ice is 144 Btu (151.9 kJ), a ton of ... and Figs 13 through 15, are the work of Norman R Sparks, Professor and Head, Department of Mechanical Engineering, The Pennsylvania State University, and Charles C DiLio, Associate Professor ... procedure is the work of Norman R Sparks, Professor and Head, Department of Mechanical Engineering, The Pennsylvania State University, and Charles C DiLio, Associate Professor of Mechanical
Ngày tải lên: 17/12/2013, 11:15
Tài liệu Colchero, J. et al. “Friction on an Atomic Scale”Handbook of Micro and Nano Tribology P6 Handbook of Micro/Nanotribology. Ed. Bharat ppt
... knowledge A better understanding of friction and wear could save an enormous amount of energy and money, which would be positive for economy and ecology On the other hand, friction is not only ... results of moving a probe of known Miller surface of a perfect crystal and calculate how energy is generated in the various phonon modes of the crystal as a function of time.” From another point of ... account the diversity of phenomena which in principle can contribute to the process of friction In fact, for a detailed understanding of friction the precise nature of the surfaces and their mutual
Ngày tải lên: 25/12/2013, 23:18
Tài liệu Handbook of Micro and Nano Tribology P10 pptx
... Modulus of Elasticity by Cantilever Deflection Measurement • Determination of Hardness and Modulus of Elasticity of Thin Films from the Composity Response of Film and Substrate 10.4 Examples of Measured ... (Figure 10.21), Er , Es, and Ei are the reduced modulus and elastic moduli of the specimen and the indenter, and ns and ni are the Poisson’s ratios of the specimen and indenter C (or ... end of the 50-data-point set The zero points for both load and displacement are then taken as the averages of the loads and displacements of 12th and 13th data sets from the end of
Ngày tải lên: 25/12/2013, 23:18
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