... values of wind direction and wind speed ofsample i The ranges of wind direction and wind speed are divided into a series of subranges having similar numbers of samples in each Then each wind direction/ ... concentration of compound j measured insample 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 and wind ... by a random series (d) Select an interval of noise in mfc Although it is difficult to determine the exact starting and ending points of the noise interval, the selected noise range should be sufficiently...
... identified as a single point in Fig Point (∼17:00) is an interception of the plume at a lower altitude upon return into the MCMA The higher mixing ratios of MTBE at the beginning and the end of the flights ... evolution ofvolatileorganiccompounds Fig 13 Results of a MM model run initialized with T0 data as a function of the processing time as calculated by the Master Mechanism In order to eliminate ... downwind decreasing importance of NMHCs as they are reacted away to form products In addition, a northeast transport event was studied in which air originating in the MCMA was intercepted aloft...
... of drinking-water supplies including the monitoring of river intakes and production wells of large CWSs, as well as the continued sampling ofdomestic wells In addition, major factors that influence ... identifying the most commonly occurring chemical mixtures in samples from drinking-water supply wells • The occurrence of THMs in samples from drinking-water supply wells, especially public wells, ... detected in more than 30 percent of wells sampled in NAWQA’s aquifer study Fumigants occur in ground water in Oahu because of a combination of factors, including extensive use in recharge areas of...
... identifying biomarkers of early lung cancer probably require the use of a panel rather than single substances [17] The main finding of our study was that none ofselected VOCs alone distinguished ... analysis and interpretation of data, involved in drafting the articles MG: substantial contribution to conception and design, statistical analysis and interpretation of data, involved in drafting the ... analysis and interpretation of data, involved in drafting the articles, final approval of the version to be published Acknowledgements This study was supported in part by Ricerca Finalizzata 2003...
... naturally in crude oil and in the tolu tree It is produced in the process of making gasoline and other fuels from crude oil Toluene is also used in making paints, paint thinners, fingernail polish, ... as a cleaning fluid, in industry and dry cleaning businesses, and in the household Carbon tetrachloride also was used in fire extinguishers and as a fumigant to kill insects in grain These uses ... polystyrene packaging material People are exposed to styrene by breathing contaminated air or eating or drinking contaminated food or water Styrene can also pass through the skin into the body Health...
... TESTING TO DETERMINE REACTIVE ORGANICCOMPOUNDSIN AEROSOL COATING PRODUCTS This section specifies the procedure for determining the percent by weight of the reactive organiccompounds contained ... DETERMINATION OFVOLATILEORGANICCOMPOUNDS (VOC) IN CONSUMER PRODUCTS AND REACTIVE ORGANICCOMPOUNDSIN AEROSOL COATING PRODUCTS APPLICABILITY 1.1 This method (Method 310) applies to the determination ... is analyzed to determine the reactive organiccompoundsin the sample, including the presence of any prohibited compounds This analysis is conducted by performing the following tests:3 5.3.1 Gravimetric...
... Initiatives: SummaryofSelected Findings SummaryofSelected Findings July 2003 July 2003 The U.S Air Force (USAF) faces an increasingly broad array of tasks calling for changing force structures and ... provide information along many dimensions of interest, including how much and what the contract was for, purchase office code1 issuing the contract, name of provider winning the contract, industry ... standardization Lack of economies of scale or scope or tradeoffs among them Lack of economies of scale or scope or tradeoffs among them Separate pots of funding Separate pots of funding Payoffs from competition...
... typical mean concentrations are presented in Tables 3.5-1 to 3.5-8 for information Noteworthy is that inspection of this data showed indications of declines inconcentrations since some of these ... aldrin contains 90% aldrin as defined above (WHO, 1989a) Technical aldrin contains no less than 85.5% of the main ingredient (HHDN), not less than 4.5 % of insecticidally active related compounds ... Earliest reports of exposure to persistent organic pollutants related to human health impact include an episode of HCB poisoning of food in south-east Turkey, resulting in the death of 90 % of those...
... summarized in Table based on the sampling of nine such episodes (0 – km) The quantitative interpretation of these ERs is difficult because of the extreme complexity of urban sources in Asia However, since ... manuscript in preparation, 2003) Figure Latitudinal distribution ofselected OVOC in the upper troposphere (8 – 12 km) A filter is used to minimize pollution influences as in Figure The lines represent ... data of 20 D15S07 SINGH ET AL.: OXYGENATED ORGANICS IN THE ATMOSPHERE D15S07 Figure Distribution ofselected OVOC and CO in the lowermost stratosphere [10] During TRACE-P, air masses representing...
... procedures for determination oforganiccompoundsin finished drinking water, source water, or drinking water in any treatment stage The method is applicable to a wide range oforganiccompounds that ... in µg/L in the water sample Ax = integrated abundance of the quantitation ion of the analyte in the sample Ais = integrated abundance of the quantitation ion of the internal standard in the sample ... of field and laboratory reagent blanks provide information about the presence of contaminants 525.2-7 4.2 5.0 Interfering contamination may occur when a sample containing low concentrations of...
... shown in Fig and Table 1, Zn titration data obtained for DOM in the original river water sample seems to fit into two linear portions indicating two classes of binding sites In contrast, DOMs in ... Biodegradability of zinc binding sites in river water DOM Fig represents the variation of DOC, UV254 and SUVA during the river water incubation for weeks in the preliminary study During the first days of incubation, ... experiments revealed that 82% of Zn binding sites of river water DOM was degraded during weeks of incubation In contrast, Zn binding sites of DOM in WWTP effluent as well as their conditional stability...
... (inorganic and organic) and isotopic composition of water samples from OSPER site A continued BA-01s well BA-01d wellwell BA-02d well BA-02s well BA-03d well BA-03s well BE-03 well BE-04 well ... TDS DOC Acetate Formate Succinate 18 δ O (‰) δD (‰) Site Name wellwellwell BE-11 well BE-12 well BE-13 well BE-15 well BE-16 well BE-17 well BE-18 BR-01d BR-02d wellwell 02OS-412 02OS-413 02OS-420 ... water samples from Osage County, OK AA-02d well AA-01d wellwell AA-02s well AA-03d well AA-03s well AA-04d well AA-04s well AE-04 well AE-05 well AE-06 Sample # 02OS-430 02OS-427 02OS-426 02OS-429...
... primarily of inorganic material and have an organic carbon content of only some % or less However, some of this organic content can be in the form of thin organic coatings on the mineral substrates In ... are involved The areas of highest concentrations reflect these sources and in- lake processes of sediment focusing Lake sediment cores can be analyzed to determine changes in historical inputs of ... dissolved concentrationsin the low ppt and ppq ranges and often continuous extraction systems are now employed The presently detected dissolved concentrationsof PTOCs in water are often an order of...
... 1994 Concentrationsofvolatileorganiccompoundsin indoor air - A review Indoor Air, 4, 123-134 Cometto-Muniz, J.E., Cain, W.S., 1995 Mixtures ofvolatileorganic compounds: Detection of odour, ... and Lindvall, T., 1993 Volatileorganiccompoundsin ventilating air in buildings at different sampling points in the building and their relationship with the prevalence of occupant symptoms Indoor ... compoundsin a sample A prescription of which compounds to include in the TVOC calculation This includes the defmition - of an 'analytical window' and - of a list ofcompounds representing the...
... alterations in the bioluminescence intensity of the tested bacteria in the absence of any toxicant during incubation The inhibition of the positive controls should be in the range of 40% to 60% ... dilution effect This finding could indicate a dominant influence of wastewater constituents on the toxicity of the recombinant samples under dry weather conditions An influence of flow conditions ... concentration values of the corresponding influent and effluent samples In case of a concentration below the LOQ, we calculated a value of ‘LOQ/2’ instead of using ‘0’ to avoid an overestimation of the removal...
... alterations in the bioluminescence intensity of the tested bacteria in the absence of any toxicant during incubation The inhibition of the positive controls should be in the range of 40% to 60% ... dilution effect This finding could indicate a dominant influence of wastewater constituents on the toxicity of the recombinant samples under dry weather conditions An influence of flow conditions ... concentration values of the corresponding influent and effluent samples In case of a concentration below the LOQ, we calculated a value of ‘LOQ/2’ instead of using ‘0’ to avoid an overestimation of the removal...
... encourage domestic investment iii, Associating in developing and implementing policies for tourism economic development iv, Associating in implementing action plans of each province in combination with ... combination with other provinces in the region v, Associating in implementing programmes, duties, plans, projects of the region vi, Associating in inspecting, supervising the regional policy, regulation ... Completing, supplementing mechanisms of investments in tourism economy; settling interdisciplinary and interoffice affairs harmoniously such as: mechanism, policies, regulations on tax administration,...
... mạch, vùng sinh phản xạ thần kinh động mạch cảnh - Thường xuyên tiếp xúc với H2S nồng độ mức gây độc cấp tính gây nhiễm độc mãn tính Các triệu chứng là: suy nhược, rối loạn hệ thần kinh, hệ tiêu ... giá Nguồn gốc , lý tính : a Nguồn gốc Trong tự nhiên : Có nước suối, khí núi lửa, thoát từ protein phân hủy Trong công nghiệp : Dihydro sufua loại khí chủ yếu tỏa trình luyện cốc từ than đá, ... 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 Amomi sunfua (NH4)2S thu dung...
... interesting when thinking about installing them in a building All of them could be controlled on line and real time in parallel, so if one doesn’t work properly, it wouldn’t affect the rest of ... where the transduction occurs, this is, inside or outside the fiber, dividing the sensors in two groups: intrinsic and extrinsic [15] 4.1 Extrinsic Sensors In this case, the fiber just guides the ... sensing material onto the fiber In many cases, it is in solid state and has to be solved and then deposited The implementation of the sensor involves several steps: removing the cladding, solving...
... episode of exercise-induced ventricular fibrillation in a well- trained 48-year-old endurance athlete Case presentation A 48-year-old, well- trained, long-distance runner collapsed at the finish of ... cardiologic examinations, in particular the ECG during exhausting treadmill exercise, showed no pathological findings Conclusion The majority of sudden deaths in athletes occur during or immediately ... have no competing interests Authors' contributions SV, DK, SP, TP and AH were involved in the conception, design, drafting and revising of the manuscript JA, DK and HHD were involved in the diagnosis...