fish—analysis of potential adverse effects on fish eating wildlife
INDOOR AIR QUALITY - SECTION 4 (end) pot
... manometer—One one-thousandth of a micron, or one billionth of a meter (e.g., 10-9) nasal congestion—Blockage of the nasal passages necrosis—Localized tissue death neutralism—A lack of interaction between ... airborne concentrations ranged from nondetectable to 16 ng/m3 The only confirmation of the latex allergens as being the cause of skin rashes and other allergic reactions was remediation that led ... referred to as “monoclonal." An example of a monoclonal test antigen is Fel d I Being related to and being the strongest (or most studied) allergenic component of a given species, the monoclonal antigens...
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Tài liệu Glossary of Volatile Organic Compounds ppt
... ortho-xylene concentration up to 0.30 parts per billion in their blood The effect of xylene exposure on the general population at current levels of exposure is not known The health effects of xylenes ... 90% of the participants did not have a detectable carbon tetrachloride concentration in their blood The effect of carbon tetrachloride exposure on the general population at current levels of exposure ... U.S study, 95% of the participants had a styrene concentration up to 0.18 parts per billion in their blood The effect of styrene exposure on the general population at current levels of exposure...
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DETERMINATION OF VOLATILE ORGANIC COMPOUNDS (VOC) IN CONSUMER PRODUCTS AND REACTIVE ORGANIC COMPOUNDS IN AEROSOL COATING PRODUCTS doc
... fraction of ammonia (as NH4) in the non-propellant portion H = weight fraction of water in the non-propellant portion EL = weight fraction of exempt compounds in the non-propellant portion WP ... in the nonpropellant, non-aqueous portion – H = weight fraction of the non-propellant portion that does not contain water – LVP= weight fraction of the non-propellant, non-aqueous portion that ... sample for confirmation 3.5 Initial Determination of VOC Content The Executive Officer will determine the VOC content pursuant to sections 3.2 and 3.3 Only those components with concentrations equal...
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Source Identification of Volatile Organic Compounds in Houston, Texas pdf
... concentration of compound j measured in sample i, the concentration of compound j in the emission of source p, and the strength of source p on sample i (16, 19) In this section, wind direction ... element of D, represents the action of source p on pollution in the wind direction range of di For example, if source strongly affects the observed concentration at the wind direction of 80°, ... directional plot shows a broad contribution from that direction There are a number of peaks in the corresponding contribution plot, but none of these peaks were on the weekend In addition, the...
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Chemical evolution of volatile organic compounds in the outflow of the Mexico City Metropolitan area potx
... eliminate the effects of dilution, the speciated data are normalized to carbon monoxide concentrations methyl ethyl ketone, ethanol, etc., which can lead to a continuous production of acetaldehyde ... specifically on the characterization of volatile organic compounds (VOCs) in the MCMA, both on the ground and aloft and on the emission, transport, and transformation of VOCs downwind of the metropolitan ... concentrations are normalized to carbon monoxide concentrations to eliminate the effects of dilution To test the model we also included the ratio of peroxyacetyl nitrate (PAN) to peroxypropionyl nitrate...
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Estimation of emissions of nonmethane organic compounds from a closed landfill site using a landfill gas emission model
... landfill conditions [7] 1.2 Assumptions and limitations of the landfill emissions model The model has the following assumptions and limitations: i the methane generation process is based on a first ... value of 1.7218 x 10-7 kg/year This probability distribution outcome provides information on the variability of the total annual mass emission rate of NMOC based on the variability of the concentration ... the concentration of NMOC, annual waste acceptance rate, and the age of the landfill have significant effect on the expected mass emission outcome of NMOC When considered in the context of exposure...
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Tài liệu METHOD 21 - DETERMINATION OF VOLATILE ORGANIC COMPOUND LEAKS doc
... catalytic oxidation, flame ionization, infrared absorption, and photoionization 6.2 The instrument shall be capable of measuring the leak definition concentration specified in the regulation 1155 6.3 ... Examples of published response factors for flame ionization and catalytic oxidation detectors are included in References 1-3 of Section 17.0 8.1.2 Calibration Precision The calibration precision test ... percentage of the average difference between the meter readings and the known concentration to the known concentration 3.3 Leak definition concentration means the local VOC concentration at the...
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Volatile Organic Compounds in the Nation’s Ground Water and Drinking-Water Supply Wells pdf
... identification of VOC concentrations that may be of potential human-health concern (hereafter referred to as concentrations of potential concern) The spatial distribution of VOC concentrations of potential ... action if concentrations are of potential concern The occurrence of lowlevel contamination of one or more VOCs in an aquifer also can provide managers with an early indication of the presence of ... resources Contamination of aquifers by one or more VOCs also is a national issue of potential concern because of the widespread and long-term use of many of these compounds Detecting one or more...
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PROTOCOL FOR EQUIPMENT VERIFICATION TESTING OF VOLATILE ORGANIC CHEMICAL REMOVAL ppt
... Statement of typical rates of consumption of chemicals, a description of the physical and chemical nature of wastes, and rates of waste production; concentrates, residues, etc.; Definition of the ... verification; and Report preparation and information transfer This verification testing program is being conducted by NSF with participation of manufacturers, under the sponsorship of the EPA Office of ... lines of communication shall be provided by the FTO in its application on behalf of the manufacturer 2.3 Verification Testing Site Name and Location This section discusses background information on...
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Reduction of Volatile Organic Compound Emissions from Automobile Refinishing docx
... development of personal computer software, and presentation of workshops on control technology matters Thetechnical guidance projects, such as this one, focus on topics of national or regional interest ... installation of solvent recovery spray equipment cleaning systems and, for volume shops only, add -on control In order to estimate VOC emissions, VOC emission reductions, and costs of emission reductions, ... emissions from automobile refinishing operations This section presents the findings of this study including alternative VOC reduction techniques, potential VOC emission reductions, and costs of...
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Total Volatile Organic Compounds (WOC) in Indoor Air Quality Investigations doc
... perception of odours Adverse health reactions include irritation of mucous membranes, mostly of the eyes, nose and throat, and longterm toxic reactions of various kinds (ECA-IAQ, 1991) As VOCs belong ... mixtures of VOCs with compositions and concentrations similar to those found in nonindustrial indoor environments In one series of experiments, humans were exposed to concentrations of a specific ... irritation in eyes, nose, air ways and skin At TVOC concentrations above 25 mg/m3, the likelihood of other types of health effects becomes of greater concern Based on theoretical considerations and...
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Báo cáo sinh học: "A nanoporous interferometric micro-sensor for biomedical detection of volatile sulphur compounds" pot
... variation of H2S concentration in air between the values of 0% and 2% This confirms the potential for this system to be applied not only for H2S detection, but also for measurements of H2S concentration ... shift of wavelength and the corresponding change of EOT signal are attributed to a change of the porous refractive index of nanoporous AAO layer as a result of the adsorption of H2S molecules on ... concentration of H2S gas, the interference signal showed a concentration-dependent wavelength shifting of the Fabry-Perot interference fringe spectrum, as a result of the adsorption of H2S molecules on...
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báo cáo hóa học:" A nanoporous interferometric micro-sensor for biomedical detection of volatile sulphur compounds" pdf
... variation of H2S concentration in air between the values of 0% and 2% This confirms the potential for this system to be applied not only for H2S detection, but also for measurements of H2S concentration ... shift of wavelength and the corresponding change of EOT signal are attributed to a change of the porous refractive index of nanoporous AAO layer as a result of the adsorption of H2S molecules on ... concentration of H2S gas, the interference signal showed a concentration-dependent wavelength shifting of the Fabry-Perot interference fringe spectrum, as a result of the adsorption of H2S molecules on...
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Báo cáo hóa học: " A nanoporous interferometric micro-sensor for biomedical detection of volatile sulphur compounds" docx
... variation of H2S concentration in air between the values of 0% and 2% This confirms the potential for this system to be applied not only for H2S detection, but also for measurements of H2S concentration ... shift of wavelength and the corresponding change of EOT signal are attributed to a change of the porous refractive index of nanoporous AAO layer as a result of the adsorption of H2S molecules on ... represents the concentration of total VSCs An average concentration of total sulphur compounds in the malodour of healthy individuals is between 0.2 to 0.4 µg/L [24] Detection of VSCs within these...
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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
... characterisation of the effect of rehydration nutrients on the formation of volatile sulfur compounds was obtained by monitoring H2S production throughout fermentation Addition of rehydration nutrients ... volatile chemical composition (Figure 1) The concentration of the polyfunctional thiols 3MH and 3MHA increased with the addition of rehydration nutrient while the concentration of hydrogen sulfide was ... detailed profile of H2S formation in the early stage of a separate fermentation experiment H2S formation was measured using gas detection tubes D H2S formation and YAN consumption profile during...
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Báo cáo y học: " Exhaled volatile organic compounds in patients with non-small cell lung cancer: cross sectional and nested short-term follow-up study" pptx
... OA: collection of samples, revision of the draft critically for important intellectual content BB: substantial contribution to conception and design, collection of samples, revision of the draft ... intellectual content MR: substantial contribution to conception and design, collection of samples, revision of the draft critically for important intellectual content AM: substantial contribution to conception ... Authors' contributions DP: substantial contribution to conception and design, acquisition of data, analysis and interpretation of data, involved in drafting the articles PC: substantial contribution...
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CÁC CÔNG NGHỆ XỬ LÝ H2S VÀ VOC (VOLATILE ORGANIC COMPOUNDS) TRONG KHÍ THẢI
... CO2 H2O có khí thải tạo thành amin cacbonat phản ứng tiếp tục xảy theo sơ đồ hệ thống xử lí khí H2S amoni cacbonat Sơ đồ hệ thống xử lý H2S amoni cacbonat Trong : 1.tháp hấp thụ tháp oxi hóa thùng ... tưới Sơ đồ hệ thống xử lý H2S Na2CO3 Ngoài ra, người ta dùng amoni cacbonat kali cacbonat làm dung dịch hấp thụ khí H2S Với amin cacbonat, phản ứng xảy sau: (NH4)2CO3 + H2S = (NH4)2S +H2O + CO2 ... clorua bơm c Xử lý H2S amoniac : Dung dịch amoniac để khử H2S khí thải trình đơn giản áp dụng rộng rãi Trong tháp hấp thụ , H2S khí thải tiếp xúc với dung dịch amoniac chúng kết hợp với theo...
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Occurrence and fate of semivolatile organic compounds (SVOCs) in the tropical atmosphere
... area of the TSP Y-intercept of gas/particle partitioning relationship Constant parameter, 0.172 Pa·m Concentration of a chemical in colloidal phase (dissolved organic carbon) Concentration of a ... Equilibrium concentration in phase m Equilibrium concentration in phase n Concentration of a chemical in atmospheric particle Dissolved concentration in water at equilibrium Concentration of a chemical ... Molar mass of a compound Slope of gas/particle partitioning relationship Molecular weight of octanol Surface concentration of sorption sites on particles Vapor pressure Mean precipitation amount...
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Tài liệu ADSORPTION OF ORGANIC COMPOUNDS doc
... activated carbon, molecules continue to accumulate on the surface until the rate of the forward reaction (adsorption) equals the rate of the reverse reaction (desorption) When this condition exists, ... the amount of adsorption on a unit mass of activated carbon was directly proportional to the initial concentration of that trace compound in an adsorption test if (1) the Freundlich exponents for ... impact on operation costs, and when visual observation is needed to monitor the condition of the GAC For many systems the decision between pressure or gravity contactors is made on the basis of cost...
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Tìm thêm: hệ việt nam nhật bản và sức hấp dẫn của tiếng nhật tại việt nam xác định các mục tiêu của chương trình khảo sát các chuẩn giảng dạy tiếng nhật từ góc độ lí thuyết và thực tiễn khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản xác định thời lượng học về mặt lí thuyết và thực tế tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam khảo sát thực tế giảng dạy tiếng nhật không chuyên ngữ tại việt nam khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ mở máy động cơ lồng sóc mở máy động cơ rôto dây quấn các đặc tính của động cơ điện không đồng bộ hệ số công suất cosp fi p2 đặc tuyến mômen quay m fi p2 đặc tuyến tốc độ rôto n fi p2 sự cần thiết phải đầu tư xây dựng nhà máy thông tin liên lạc và các dịch vụ từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose chỉ tiêu chất lượng 9 tr 25