volatile and semi volatile organic compounds in beehive atmospheres

... that is clean and safe for drinking and recreation and that is suitable for industry, irrigation, and habitat for fish and wildlife Escalating population growth and increasing demands for the ... : volatile organic compounds in the nation’s ground water and drinking-water supply wells / by John S Zogorski [et al.] p cm (Circular 1292) Includes bibliographical references and index Organic ... scientists and engineers interested or involved in resource management, conservation, regulation, and policy making at national, regional, and State levels In addition, the information in this report...

Ngày tải lên: 14/03/2014, 19:20

... conception and design, analysis and interpretation of data, involved in drafting the articles. MG: substantial contribution to conception and design, statistical analysis and interpretation of data, involved ... the compounds into three groups (table 4) and suggests some fascinating hypoteses. It may be particu- larly relevant in distinguishing substances of endogenous Classification of cases with multinomial ... identifying and quantifying volatile organic compounds (VOCs) in exhaled air of patients with non-small cells lung cancer (NSCLC), by comparing the levels with those obtained from healthy smokers and...

Ngày tải lên: 12/08/2014, 18:21

... such as insects and pathogens Various insect secretions including oviposition fluids, oral secretions (OS), and insect excreta are known to act as elicitors of induced plant defenses against insect ... homodimer-1 is well retained in dead VEG cells, producing a bright red fluorescence (C), and Intact VEG polyanionic dye calcein is well retained in live VEG cells, producing an intense uniform green ... potting soil was wrapped with aluminum foil to minimize evaporation of water and volatiles from the soil and placed in a volatile collection chamber consisting of a L glass jar A purified (using...

Ngày tải lên: 27/05/2020, 01:24

... the origin and fate of organic subsurface contaminants including petroleum and chlorinated hydrocarbons and is typically applied to water samples However, soil can form a significant contaminant ... the late eluting compounds The peak tailing of the early eluting compounds remains an issue In general, DCM would benefit from a lower initial oven temperature and lower cryogenic focusing temperature ... contamination following this treatment Although the baseline in the first dimension remained noisy, target compounds, with the exception of CT, could be isolated from the interfering compounds using...

Ngày tải lên: 25/12/2022, 02:13

... expanded model to identify sources in complex VOC systems and extract useful information for locating VOC emitters and controlling their emissions in the Houston area. Introduction Volatile organic ... d i and s i are the values of wind direction and wind speed of sample i. The ranges of wind direction and wind speed are divided into a series of subranges having similar numbers of samples in ... isdifficult to determinethe exact startingand ending pointsof the noise interval, the selected noise range should be sufficiently long to reflect thenoise information. In thisexample, the selected interval...

Ngày tải lên: 22/03/2014, 14:20

... two minute time intervals at both the T0 and T1 sites A full description of the instrument and its performance is given in Junkermann and Burger (2006), and an instrumental intercomparison in Hak ... of volatile organic compounds 2359 Table Mean methane, carbon monoxide and nonmethane hydrocarbon mixing ratios obtained during sampling the month of March 2006 Standard deviations are given in ... ascent and these are 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...

Ngày tải lên: 28/03/2014, 20:20

... used in the SPME extraction (e.g 60 °C) may promote further reactions involving compounds in the urine [6] These reactions potentially produce secondary volatile and non -volatile compounds In this ... freeze-drying, addition of acid (HCl), addition of base (NaOH), addition of salt (NaCl), fresh urine and frozen urine when identifying and quantifying metabolites in 4 ml samples Freeze-drying and ... Background Volatile organic compounds (VOCs) represent a chemically diverse group of metabolites found in biological fluids, with a boiling point lower than 300 °C and generally containing less...

Ngày tải lên: 29/05/2020, 13:33

... METHOD 310 DETERMINATION OF VOLATILE ORGANIC COMPOUNDS (VOC) IN CONSUMER PRODUCTS AND REACTIVE ORGANIC COMPOUNDS IN AEROSOL COATING PRODUCTS (Including Appendices A and B) Adopted: Amended: ... commencing with section 94500, and (2) low vapor pressure -volatile organic compounds (LVP-VOC) as that term is defined in section 94508(a), and (3) the reactive organic compounds (ROC) contained in ... portion, excluding container and packaging = weight (gm) of exempt compounds in propellant For aerosol products containing LVP-VOC, the percent VOC shall be calculated using the following equation:...

Ngày tải lên: 14/03/2014, 20:20

... of many semi -volatile organic compounds (SVOCs) This study focuses on modeling the vapor phase exchange of semi -volatile hydrophobic organic pollutants between soil and the atmosphere using the ... production and are still used in developing countries (e.g DDT for malaria control), PCBs were and still are released into the atmosphere from PCB-containing buildings, electrical equipment and contaminated ... analysis (dashed lines) With increasing organic carbon content in the soil, i.e with increasing sorption to the solid phase, retardation increases and phenanthrene propagates more slowly into the soil...

Ngày tải lên: 02/11/2022, 14:39

... Trends in Analytical Chemistry, Vol 30, No 7, 2011 Extracting and trapping biogenic volatile organic compounds stored in plant species ă lo Niinemets Elena Ormen˜o, Allen Goldstein, U Biogenic volatile ... extraction and during storage Recommendation Grinding increases the contact between leaves and extracting solvent, resulting in increased terpene yields [11,15,62] However, some studies point out ... contained in the purchased organic solvents, and by replacing the air contained in the vial flask by gaseous nitrogen Oxidation during the drying process does not seem to be a major problem, since...

Ngày tải lên: 17/03/2023, 16:32

... Sundell, J., Andersson, B., Andersson, K., and Lindvall, T., 1993 Volatile organic compounds in ventilating air in buildings at different sampling points in the building and their ... locations and volatile organic compounds in indoor air from a healthy and a sick building Atmospheric Environment, 22,45 1-460 Otson, R and Fellin, P., 1992 Volatile organics in the indoor. ... American Industrial Hygiene Association, pp 131-... 1992 Volatile organic compounds and some very volatile organic compounds in new and reccntly renovated buildings in Switzerland...

Ngày tải lên: 28/03/2014, 19:20

... and spruce trees were harvested in autumn 1994 and 1995 Only 137Cs and 40K activities were measured in tree rings as well as separately in needles and in the wooden parts of branches, including ... and environmental monitoring in Croatia 163 species, sorption and desorption processes in soil, mineral soil composition, grain size and soil types, lateral cesium migration, and so on Certain ... officinale, Trifolium sp., and Onobrychis viciaefolia In nectar meadow honeys collected in 1992 and 1993, Compositae and Brassicaceae dominated over Umbelliferae and Rosaceae Among pollen grains...

Ngày tải lên: 12/08/2014, 04:22

... Original Sustainability, S for Sustainable Level for human activities ΔOS means the marginal increase of consumption against environmental amenity while original sustainability is maintained The degradation ... became increasingly criticized by international activists as a source of poverty and environmental degradation in developing countries One of the most important turning point was the WTO Ministerial ... Issues In this chapter, environmental issues in the global context are explained in detail The issues include the opening of world summit meetings for environment, ODA and its relation to trade and...

Ngày tải lên: 20/04/2014, 20:22

... depletion and degradation of the global environmental assets Many efforts are being made by individuals, governments, NGOs and international organizations including Green Peace and WWF International ... completely and self-sufficiently sustainable in their original net amount on an annual basis Here, it is named as the Original Sustainability Consumption (OS) line OS=0 line is the boundary within which ... for Consumption, E stands for Environmental Resources, S stands for Sustainable Level, and OS stands for Original Sustainability - 22 - 1.2 Theories of collective actions and International Agreements...

Ngày tải lên: 17/03/2015, 13:26

... leaders, in an attempt to increase understanding of what constituted effective leadership These concepts relating to leadership styles were introduced in 1938 by Lewin and Lippitt, but reached prominence ... explaining in advance the procedures for accomplishing the goals, and granted the followers independence to commence their own tasks and congratulating them in an objective manner According to ... women or feminine characteristics being included in the leadership theories between 1940s and 1980s Not surprisingly, all the researchers and writers on early leadership were men and hence the...

Ngày tải lên: 08/10/2013, 15:56

... active role in financial restructuring in China by introducing international standards and good practice and providing policy advice and personnel training in specific areas For instance, China has ... technology, in exploring on-line banking business as well as in promoting non-bank financial institutions Efforts should be made in upgrading financial operations and financial services, and in conducting ... China Statistics Yearbook, China Financial Yearbook and People’s Bank of China Statistics Quarterly bulletin B Development of direct financing and indirect financing markets providing financing...

Ngày tải lên: 18/10/2013, 07:15

... per million vaccinees in Sweden and Finland, respectively (46 ) Regional increases in the incidence of BCG osteitis have been noted following changes in either the vaccine strain or the method ... forming a lesion approximately mm in diameter Draining lesions resulting from vaccination should be kept clean and bandaged Scabs form and heal usually within months after vaccination BCG vaccination ... whose skin-test results are negative (i.e.,

Ngày tải lên: 15/02/2014, 13:20

... Current Issues in Economics and Finance, August Strahan, Philip, and James Weston 1998 “Small Business Lending and the Changing Structure of the Banking Industry,” Journal of Banking and Finance, August ... advances in information and communication technology are reducing their comparative advantage in relationship-based lending, especially small business lending (Petersen and Rajan) Rating agencies and ... the large banking organizations falling in the latter group are two kinds—those that conduct most of their business within a single state (for example, Commerce and UMB in Missouri), and those that...

Ngày tải lên: 16/02/2014, 11:20

... Electrostatic interactions and antitumor RNases the dimer interface of the models or in the surroundings of the hinge loop residues Likewise, the models of nonexchanging and exchanging HHP-RNase ... and variation of the inclination (inclination angle ‘i’) with respect to the plane of the membrane (parallel to the xy plane) Cter and Nter are the C-terminal and N-terminal structural regions, ... homologous to the RNases investigated in this study, have been isolated from human eosinophils, namely eosinophil-derived neurotoxin (EDN) and eosinophil cationic protein (ECP) They are RNases...

Ngày tải lên: 19/02/2014, 06:20

... modification may in uence many of the physicochemical and biological properties of the proteins, such as protein folding, stability, targeting, dynamics and ligand binding, as well as cell-matrix and cell–cell ... a misfolding of this protein, resulting in its partial retention in the ER and its rapid digestion thereafter [16,19] Accordingly, our results indicate that the intracellular trafficking of N-glycosylation ... and blocked with 5% bovine serum albumin and 0.1 m glycine in NaCl ⁄ Pi for 30 and washed with NaCl ⁄ Pi again Polyclonal antibodies against GAT1 were used for immunostaining at room temperature...

Ngày tải lên: 19/02/2014, 17:20