variation sources and emission rates of volatile organic compounds over the northeastern u s
Chemical evolution of volatile organic compounds in the outflow of the Mexico City Metropolitan area potx
... UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI TOGA TOGA/PTR-MS TOGA TOGA TOGA TOGA UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI UCI ... fraction of emissions from paints and solvents compared to mobile sources Secondary sources of these species were found to be large at T1 (de Gouw et al., 2009) Less is known about the emissions of the ... Aromatics result from vehicle emissions but are also widely used in paints, and industrial cleaners and solvents Aldehydes result from fossil fuel combustion and are formed in the atmosphere from the...
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DETERMINATION OF VOLATILE ORGANIC COMPOUNDS (VOC) IN CONSUMER PRODUCTS AND REACTIVE ORGANIC COMPOUNDS IN AEROSOL COATING PRODUCTS doc
... generate the coefficients for an Antoine equation The data analysis procedure assumes that the measured pressure is the sum of the compound s vapor pressure and a residual fixed gas pressure The vapor ... resolved between the results of Method 310 and the supplied formulation data, then the results of Method 310 shall take precedence over the supplied formulation data The results of Method 310 shall ... pressure work only) A purge and degassing procedure consisting of lower pressures and a liquid nitrogen bath replaces the step of lightly boiling the sample as outlined in ASTM D 2879-97 Purge and...
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Tài liệu Glossary of Volatile Organic Compounds ppt
... variety of foods such as fruits, vegetables, nuts, beverages, and meats Styrene is also present in combustion products, such as cigarette smoke and automobile exhaust Route of exposure Styrene ... much higher levels can cause unconsciousness, low blood pressure, and loss of heartbeat In some animals, exposure to high levels damages the breathing passages, affects the nervous system, and ... been found in underground water sources and many surface waters as a result of the manufacture, use, and disposal of the chemical Trichloroethylene is mainly used as a solvent to remove grease from...
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Volatile Organic Compounds in the Nation’s Ground Water and Drinking-Water Supply Wells pdf
... occurrence of a large number of VOCs with different uses, and the assessment addresses key questions about VOCs in aquifers The assessment also provides a foundation for subsequent decadal assessments ... well samples constitute the most current understanding of the occurrence of a large number of VOCs in untreated ground water used by public water systems (PWSs) across the Nation Our assessment of ... suggestions of all are greatly appreciated Summaries of water-quality studies for the 51 Study Units assessed in the first decade of the NAWQA Program, as well as Study Units scheduled for assessments...
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Source Identification of Volatile Organic Compounds in Houston, Texas pdf
... compound the candidate cases had at least three runs to avoid local optima, and finally the case of sources (excluding methanol) was selected as the best solution The results are discussed below The ... decreases (16) However, the factors of sources and increase with increasing wind speed and source shows an almost flat curve The possible reasons for these phenomena might be (1) for these sources ... chemical influences of such factors on the observed concentrations However, the results suggest this is a feasible direction for such a study In addition, the results suggest that the error estimation...
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Báo cáo hóa học: " Effects of rehydration nutrients on H2S metabolism and formation of volatile sulfur compounds by the wine yeast VL3" docx
... precursor synthesis The research was supported by an Industry Partnership grant of the University of Western Sydney Research at The Australian Wine Research Institute is supported by Australia s ... continued support and valuable input We thank Prof Sakkie Pretorius and other colleagues at the Australian Wine Research Institute for useful discussions Kevin Pardon is acknowledged for thiols precursor ... induced the formation of H 2S while the addition of DAP delayed it Page of 11 (Figure 1c) Nonetheless, these results support our previous hypothesis of distinct effects for each of the treatments...
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Volatile Organic Compound Concentrations and Emission Rates Measured over One Year in a New Manufactured House pptx
... manufactured house built to U. S Department of Housing and Urban Development (HUD) Manufactured Home Construction and Safety Standards (HUD, 1994) The house was manufactured in Pennsylvania and ... vent at the top to supply outdoor air to the house, but these vents were closed during the measurements The air tightness of the house was determined by fan pressurization tests conducted according ... components of the HAC system and substantial duct leakage into the belly space and possible reentry of air through openings in the floor Much remains to be discovered about the dynamics of VOC sources...
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Effect of unsaturated fatty acid esters of biodiesel fuels on combustion, performance and emission characteristics of a DI diesel engine
... discussions 3.1 Properties of biodiesel fuels The results of fuel tests on different biodiesel fuels are summarized in Table and Table A correlation analysis was made to find out the degree of ... measuring emission and smoke intensity A 2-inch as diameter filter paper was used to collect smoke samples from the engine, through smoke sampling pump for measuring Bosch Smoke Number Results and ... Journal of Energy and Environment (IJEE), Volume 1, Issue 3, 2010, pp.411-430 417 viscosity The higher the bulk modulus and viscosity is, the faster the injection timing is The bulk modulus of...
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Estimation of emissions of nonmethane organic compounds from a closed landfill site using a landfill gas emission model
... effects caused by landfill gases, there is, therefore, often a requirement to monitor the migration of these gases to ensure the safety of both in-situ and ex-situ structures, and to ensure the safety ... composition from one emission source to another across a landfill and within a given emission source Emission sources include passive vents, soil surfaces, and gas collection systems The expected variability ... now exist two results of the mass emission rate of NMOC Figure Graph of frequency against range of emission values of NMOC Discussion As can be seen from Figures 1-3, rather than a absolute (deterministic)...
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Tài liệu METHOD 21 - DETERMINATION OF VOLATILE ORGANIC COMPOUND LEAKS doc
... exists Also, determine if any sources exist in the ducting or piping where emissions could occur upstream of the control device If the required ducting or piping exists and there are no sources ... device, the existence of these conditions shall be visually confirmed When the regulation also requires that no detectable emissions exist, visual observations and sampling surveys are required ... 1152 used as a direct measure of mass emission rate from individual sources 3.0 Definitions 3.1 Calibration gas means the VOC compound used to adjust the instrument meter reading to a known value...
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PROTOCOL FOR EQUIPMENT VERIFICATION TESTING OF VOLATILE ORGANIC CHEMICAL REMOVAL ppt
... are substantial The EPA and NSF have formed an oversight stakeholders group composed of buyers, sellers, and states (issuers of permits), to assist in formulating consensus testing protocols A ... of Product Tested; Procedures and Methods Used in Testing; Results and Discussion (discussion of results should be kept at a minimum to a avoid conclusions and recommendations); References; Appendices; ... resources necessary to operate the equipment; and The reliability, ruggedness, cost factors, range of usefulness, and ease of operation The PSTP shall include those treatment tests listed in TSTPs...
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Reduction of Volatile Organic Compound Emissions from Automobile Refinishing docx
... application process, VOC emissions and emissions reductions, and costs associated with the use of alternative coating formulations and equipment used in the automobile refinishing industry This information ... application processes, VOC emissions and emissions reductions, and costs associated with the use of alternative coating formulations and equipment used in the motor vehicle refinishingindustry This information ... to compare the emission reduction techniques and resulting emission reductions discussed in Sections and 6, respectively State or local agencies should conduct a survey of shops in their area...
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Combustion and emission characteristics of a natural gas fueled diesel engine with EGR
... drop, and therefore they require the increase of gas pressure in order to overcome this pressure drop The increase of gas pressure may lead to continuous gas supply during the four strokes while the ... Table summarizes the uncertainty analysis of the measured parameters in the present study Results and discussion To visualize the various effects of the utilization of EGR in pilot ignited natural ... substituting some of O2 by CO2 and part of H2O in the exhaust gas This increases the 4.1.3 Rate of pressure rise (ROPR) The pressure–time data is used to calculate the rate of pressure rise, or the slope...
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Calculus: An Integrated Approach to Functions and their Rates of Change, Preliminary Edition Part 116 pdf
... functions and, 143–144, 169 Constant solutions See Equilibrium solutions Continuity definition of, 270, 273 Extreme Value Theorem and, 271 Intermediate Value Theorem and, 271 Sandwich Theorem and, ... 890–894 used to reverse Chain Rule, 792–794 Subtraction of functions, 101–103 principles of, 1059–1061 Subtraction formulas, 668–669 Successive approximations, 715–718 Summation notation examples of, ... manipulating, 956 Uniqueness Theorem and, 945 Predictions, 139–143 Present value, 582–585 Probability density function, 903 Production cost versus amount produced, 210 Product Rule See also Integration...
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Calculus: An Integrated Approach to Functions and their Rates of Change, Preliminary Edition Part 1 pps
... (Convergence issues are first brought up in Part VI, in the context of a discussion of geometric series.) In Part X the discussion of polynomial approximations motivates the subsequent series discussion ... calculus in the first semester Second, delaying trigonometry has the benefit of returning students to the basics of differential calculus Too often in a standard calculus course students think about ... instructor Structuring the Content The text covers the equivalent of a precalculus course plus one year of one-variable calculus Parts I through VII meld precalculus and first-semester calculus A yearlong...
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Calculus: An Integrated Approach to Functions and their Rates of Change, Preliminary Edition Part 2 ppsx
... away something you can use for reference in the future, this book will supply some concise summaries of the conclusions reached as a result of the investigations in it We, the author and your instructors, ... College To the Student This text has multiple goals To begin with, you should learn calculus Your understanding should be deep; you ought to feel it in your bones Your understanding should be portable; ... mathematics arises from problem solving and from pushing out the boundaries of what is known Questioning leads to the expansion of knowledge; it is the heart of academic pursuit From one question...
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Calculus: An Integrated Approach to Functions and their Rates of Change, Preliminary Edition Part 3 ppsx
... context Upon first exposure, the notation and representations may be confusing, but as you use the language of functions the nuances will become as natural as nuances in the English language Aside: ... a unique output Selecting button #1 sometimes results in a can of Coke and other times in a can of Sprite The input does not uniquely determine the output Let s make diagrammatic models of the ... We put in our money and press a button; we obtain a drink as output Were we to put in the same amount of money and push the same button, we would get the same output Before seeing the output for...
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Calculus: An Integrated Approach to Functions and their Rates of Change, Preliminary Edition Part 4 doc
... factor must the radius be multiplied? 29 Let A = A (S) be the area function for a square of side S A takes as input the length S of the side of a square and gives as output the area of the square ... is the volume of the full beaker The volume of a cylinder of height h and radius r is the product of the height and the area of the disk that is its base, i.e π r 2h Since the radius is inches, ... amount he puts into riskier stocks, and b be the amount he puts into bonds Then s + 2s + b = 2000 We can solve this equation for b unambiguously in terms of s; therefore b is a function of s: ...
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Calculus: An Integrated Approach to Functions and their Rates of Change, Preliminary Edition Part 5 pptx
... radius of inches The top skin of the pudding forms a disk whose radius, r, depends upon the height, h, of the pudding Express r as a function of h SOLUTION First, be sure you understand the question ... triangle whose legs are h and r, this is not useful, since the hypotenuse of the triangle is unknown Instead, we must draw a triangle that involves the radius of the bowl itself This radius must emanate ... series of simpler questions We’ll use unit analysis to help us We’re looking for the number of pounds of sugar cane it takes to support a panda weighing x pounds for one day In order to use unit...
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