Ngày tải lên: 23/03/2014, 19:20
Tài liệu Resource Handbook of Electronics P2 pdf
... and business aspects. 2.2 The History of Modern Standards In 1836, the U.S. Congress authorized the Office of Weights and Measures (OWM) for the primary purpose of ensuring uniformity in custom house ... of Electrical En - gineers developed standards between 1890 and 1910 based on the practices of the ma - jor electrical manufacturers of the time. Such activities were not within the purview of the ... at the left side of the screen. Consider the left side of the screen to be the an- tenna, the horizontal axis to be distance instead of time, and the sweep speed to be the speed of light, or at...
Ngày tải lên: 13/12/2013, 01:16
Tài liệu Drugs and Poisons in Humans - A Handbook of Practical Analysis (Part 36) pdf
... 200 mL of mobile phase, and passed through the column at a ow rate of 0.3 mL/min before injection of a sample solution. c) ASA is easily converted into salicylic acid by the action of esterase ... solutions of various concentrations of ASA and its metabolites, 200-àL aliquot each was processed according to the above procedure for construction of calibration curves. Assessment of the method > ... fever and somnolence appeared. e last ingestion of ASA tablets was made at 9:00 p. m. on the previous day of admission. In the morning of the day for admission, she fell into the comatose...
Ngày tải lên: 15/12/2013, 12:15
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 products ... 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. ... of air per lb (8.71 kg/kg) of natural gas, or 19.3584 /22.1 ϭ 0.875 lb of air per ft 3 (13.9 kg/ m 3 ) of natural gas. See step 4 for an explanation of the value 22.1. 7. Compute the weight of...
Ngày tải lên: 17/12/2013, 11:15
Tài liệu Handbook of Mechanical Engineering Calculations P5 pdf
... conditions of 1800 psia (12,402 kPa) and 1050 Њ F (565.6 Њ C). At exit from the cylinder the steam has a pressure of 500 psia (3445 kPa) and a temperature of 740 Њ F (393.3 Њ C). A portion of this ... is subject to the Terms of Use as given at the website. Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 5.4 POWER GENERATION m) are used. Use the Standards of the Bleeder Heater Manufacturers ... more heaters. Plot the percent improvement vs. number of stages of extraction, Fig. 6, to observe the effect of additional heaters. A plot of this type shows the decreasing gains made by addi- tional...
Ngày tải lên: 17/12/2013, 11:15
Tài liệu Handbook of Mechanical Engineering Calculations P6 pdf
... horsepower requirements of the driven load. On equipment of entirely new design, it is often difficult to ascertain the amount of power necessary. In such instances, a rough estimate of the horsepower ... of air per lb of fuel)(specific volume of the air, ft 3 /lb)(fuel consumption, lb/h)/3600 s/h. Or 24.1(13.02)(28)/3600 ϭ 2.44 ft 3 (0.69 m 3 ) per second. 5. Compute the volumetric efficiency of ... high-speed engines of the same horsepower (kW) rating. The initial cost of a larger engine is greater but more frequent servicing can easily bring the cost of a smaller engine up to that of the larger...
Ngày tải lên: 17/12/2013, 11:15
Tài liệu Handbook of Mechanical Engineering Calculations P9 pdf
... within 2.5 inHg (9.7 kPa) of the barometer, or a vacuum of 29.8 Ϫ 2.5 ϭ 27.3 inHg (105.5 kPa). 2. Compute the quantity of free air removed from the receiver Select a number of absolute pressures ... cool- ing effectiveness of both types of towers are about equal. Data given on cooling towers elsewhere in this handbook can be helpful to the designer in choosing the best type of tower to use for ... to the Terms of Use as given at the website. Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS AIR AND GAS COMPRESSORS AND VACUUM SYSTEMS 9.19 TABLE 3 Typical Computation of Compressed-Air...
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 refrigeration ... process for the weak solution is that of simple cooling. The heating of the strong aqua, however, may be accompanied by vaporization of a small portion of the constituents if the temperature ... comparison, the heat of sublimation (melting) of dry ice (CO 2 ) is 275 Btu/lb (640.8 kJ/ kg). To say that a refrigeration machine has a capacity of 10 tons (35.16 kW) is to say that the rate of refrigeration...
Ngày tải lên: 17/12/2013, 11:15
Tài liệu Handbook of Corrosion Engineering P2 pdf
... concentration of oxygen at the head 26 Chapter One Head Coated alloy Tail X Front of head Back of head Direction of propagation Figure 1.10 Illustration of the filament nature of filiform corrosion. 0765162_Ch01_Roberge ... the spontaneous pro- duction of a voltage away from equilibrium. The magnitude of polar- ization is usually measured in terms of overvoltage , which is a measure of polarization with respect ... cell is the acidification of the electrolyte with low oxygen concentration. This leads to the for- mation of an anodic metal dissolution site at the front of the head of the corrosion filament...
Ngày tải lên: 22/12/2013, 23:17
Tài liệu Spoken english elementary handbook part 15 pdf
... classes, one of the most common causes of pronunciation mistakes used to be when students tried to speak English using only the 8 vowel sounds of Polish, instead of the 23 vowel sounds of English. ... there are in English (23). No doubt they will be surprised at the disparity between the two numbers. In English there are a lot of vowel sounds! Explain that lack of knowledge of English vowel ... all forty eight sounds of English in one hour, and that you will continue to look at the sounds of English with the IPA throughout the course. Perhaps give out one set of flashcards (see p.18.7)...
Ngày tải lên: 23/12/2013, 12:17
Tài liệu Drugs and Poisons in Humans - A Handbook of Practical Analysis (Part 40) pdf
... died of its poisoning, were 9.852 àg/mL [20,21]. e blood and urine concentrations of the drug for a adult woman, who had received the administration of 3,000 mg of the drug and died of its ... fatal case with oral intake of dibucaine; 0.6 àg/mL of dibucaine and 1.5 mg/mL of ethanol were detected from blood of this victim [7]. Notes a) e long storage of the solutions in dark brown ... volume of blank blood is used for constructing a calibration curve, 1.5 mL of 0.05 àmol/mL neostigmine bromide aqueous solution and then 0.5 mL of blank blood should be added in place of 2 mL of...
Ngày tải lên: 24/12/2013, 18:15
Tài liệu Drugs and Poisons in Humans - A Handbook of Practical Analysis (Part 45) pdf
... night of the 1st day of admission, the occult blood test of urine became positive (2+); 2 vials of heptoglobin were administered, followed by direct hemoperfusion and administration of 7 mL of ... to the outer surface of hair without chemical reaction. In view of poisoning, the reactive hair dyes are objects of interest and of analysis. A reactive hair dye consists of main components for ... clogging of a pre- lter of HPLC sometimes appears and the movement of a plunger in a syringe of an autoinjector becomes not smooth for GC or GC/MS. ese are due to the presence of insoluble...
Ngày tải lên: 24/12/2013, 18:15