... benefits from the good or asset Much of the focus of the property rights literature is on understanding the nature of the rights, who has them, andthe outcomes associated with these rights In this ... growth andthe environment, andthe interconnections in the global commons also requires that we understand the broad dynamics and feedback effects of the systems we wish to understand Whatever the ... however, the likely audience lacks the training or background to understand the model, or the implications and caveats of the results, then considerable effort is required to explain the model and...
... using the new standard, it found that one fully met the standard, andthe second barely missed meeting the standard due to formaldehyde off-gassing The company worked to address the off-gassing and ... agencies better understand the environmental implications of lean manufacturing and to help them adjust environmental management and regulatory initiatives to boost the environmental and economic benefits ... examine further the relationship between lean manufacturing and environmental performance andthe regulatory framework The goal of this effort is to help public environmental agencies understand ways...
... volume fracturing of some tight gas and conventional reservoirs in the southern part of the North Sea and in onshore Germany, the Netherlands, Denmark andthe UK Preliminary indications are that ... this area include Poland, Germany, the Netherlands, the UK, Spain, Romania, Lithuania, Denmark, Sweden and Hungary The North American context Technological advancements andthe integration of horizontal ... characterise these effects The study identified a number of issues as presenting a high risk for people andtheenvironment These issues and their significance are summarised in the following...
... onto the instrument through the head of the chromatographic column The sample is then transported through the column by the flow of the inert and gaseous mobile phase of the carrier gas Later, the ... of the interaction between the odorous molecules of butyl mercaptan present in the nose cavity andthe sensory cells A.Yuwono and P Schulze Lammers “Odor Pollution in theEnvironmentandthe ... phase The chemical state of theenvironment with its different compounds determines the complete analytical information A.Yuwono and P Schulze Lammers “Odor Pollution in theEnvironmentand the...
... research The use of “emerging” is not intended to infer that the presence of these compounds in theenvironment is new These chemicals have been released into theenvironment as long as they have ... production or, in the case of hormones and other endogenous compounds, since the rise of animal life What is emerging is the interest by the scientific and lay communities in the presence of these chemicals ... defines the composition and concentrations of PPCPs in potential sources and their fate and effects following release into theenvironment Independent of the drivers that potentially fuel the interest...
... commonly on the basis of their consumption in the country where the study is being conducted, the rate of metabolism of drugs, the environmental occurrence, and persistence in theenvironment ... close to the landfill Two studies also reported the occurrence of barbiturates in the environment, pentobarbital and 5,5-diallylbarituric acid in groundwater70 and phenobarbital andthe metabolite ... drugs of abuse, and some human metabolites in the aquatic environment are discussed.17–19 The recent trends in multiresidue methodologies for the determination of the drugs and their human metabolites...
... that during the contact time of 14 hours used in the study, the microorganisms have either incorporated the pharmaceuticals into the organic matter content of the soil or have degraded the pharmaceuticals ... that the unwanted matrix can be captured in the SPE sorbent while the analytes pass through the cartridge and are collected for further concentration Either way, the main purpose of SPE is the ... where the sorbent is “wetted.” Solvents are used to rinse the sorbent and to allow contact of the analytes with the solid phase The next step involves the “loading” of the sample onto the cartridge...
... concentration, on the one hand, andthe experimental determination of a no-effect concentration (NOEC) of the pharmaceutical on the other hand.3,4 Because the aquatic environment represents the primary ... mg/L), andthe blank solution were incubated with the preadapted microorganisms for 27 days The biological degradation of the test and reference substances was evaluated by the measurement of the ... case the cell number was determined via measurement of chlorophyll fluorescence The increase of biomass andthe growth rate was calculated on the basis of the cell counts The calculated biomass and...
... Pharmaceuticals in theEnvironmentand in Water Treatment Systems reviews our understanding of the inputs of livestock medicines to theenvironmentand synthesizes the available information on the fate and ... this can be incorporated into the calculation The model calculated the concentration of the veterinary medicine in animal manure and then uses the nitrogen content of the manure andthe maximum ... the soil environmentand their subsequent fate and transport There is clearly a large body of data available on veterinary medicines in the soil environment, and it is timely to begin to further...
... on the degradation of antibiotics and hormones in theenvironment 6.2 ASSESSING CONTAMINANT FATE AND TRANSPORT IN SOIL ENVIRONMENTS The potential for antibiotics and hormones to contaminate and ... reducing the mobility and persistence of these antibiotics in theenvironment 6.3.2 DEGRADATION IN MANURE AND SOIL Lee et al.8 and Kumar et al.11 have recently reviewed the literature on the degradation ... impact theenvironment is directly influenced by their mobility and persistence in animal wastes and soils As a result, many studies have examined the dissipation and partitioning of these contaminants...
... the slurry These organisms were selected for the preliminary trial because of their ease of detection, relevance, and availability The slurry was then poured onto the surface of the columns The ... of these characteristics, it is important to understand the survival and mobility of these microorganisms in theenvironment Several researchers have reported E coli surviving up to weeks, and ... so that the bottom of the soil column rested firmly on the sand Soil columns were allowed to drain, and those with drainage times of 24 to 48 h were chosen for the experiment and were randomly...
... deposited onto the soil surface For most plants the top soil layer is the most important interface with their environment, providing support and protection of the roots and, at the same time, ... Pharmaceuticals in theEnvironmentand in Water Treatment Systems was formed (40 to 960 mL, dependent on the soil), sampled from the collecting dish, weighed, and aliquoted At the end of the experiment the ... leaching potential Therefore, the later uptake was less in the sandy soil due to depletion of the compound in the pore water Sulfamethazine is more mobile and is therefore taken up first and depleted...
... Pharmaceuticals in theEnvironmentand in Water Treatment Systems Phytoremediation, the application of plants and their associated microbes to enhance biodegradation of contaminants in the environment, ... as Phase III of the detoxification pathway, andthe end result for the xenobiotic differs depending on the organism In plants, the GSH-conjugated xenobiotic is either stored in the cell’s vacuole ... Pharmaceuticals in theEnvironmentand in Water Treatment Systems protein and nucleic acid synthesis, including modulation of enzyme activity and adaptation to environmental stress.28 Environmental...
... drugs throughout the world, their partial metabolism after ingestion, and inconsistencies in the way they are disposed make their presence in the aquatic environment inevitable Their sources in ... expected in the environment, their constant infusion can cause them to become more persistent and, therefore, even if the half-lives of these compounds are short, long-term exposure effects and combinatory ... what does and does not work in remediating the presence of drugs in drinking water There is no question that subtherapeutic doses of these compounds are finding their way into the surface and groundwaters...
... tendency Dow is the ratio of the sum of the concentrations of all species of the compound in octanol to the sum of the concentrations of all species of the compound in water, and its value highly ... Disruptors and Pharmaceuticals 255 The authors are grateful for the kind assistance and support from their colleagues in the Water Quality Research & Development Division of the Southern Nevada ... are for the neutral form of the molecules For these species, the octanol–water distribution coefficient (Dow) should be more appropriate to represent their hydrophobicity and relate to their removal...
... pregnenolone, and subsequently 4-androstenedione and testosterone The two androgens are then hydroxylated at C-19, andthe resulted 19-hydroxyl groups are oxidized and further removed The final products ... is the oxidation of the 17-hydroxy group resulting in androstanedione and androstenedione.42 Furthermore, the reduction of the keto group at C-3 produces four metabolites (epi)androstanediol and ... clarified.142 Androgens are important for the development of male sex organs andthe maintenance of the secondary sex characteristics.8 13.4.1 BIOSYNTHESIS OF ANDROGENS Androgens are largely synthesized...
... predominantly in the slurry If a lagoon is not mixed prior to land application, only the antibiotics in the slurry may be predominantly introduced to theenvironment If the lagoon is mixed prior to land application, ... and then treated with chlorine (or monochloramine) for three sample matrices: (1) the influent to the first cell from the barn (INF); (2) the effluent from the first cell and influent to the ... al., 2000) The underfloor basin or pit is located directly beneath the slatted floor of the building housing the swine (Figure 14.2) The swine manure, along with excess food and other solids,...
... treatment The biodegradation of sulfonamides31,33 and trimethoprim33 has been evaluated in batch reactors, and they were found to be nonreadily biodegradable and have the potential to persist in the ... populations served by Amherst and Holland WWTPs are 115,000 and 1,750, respectively Grab and composite samples were obtained twice during the day (8 A.M and P.M.) Both grab and composite samples were ... modified compared to the parent compound (Figure 15.2) Whether these metabolites still exhibit the antibacterial activity of the parent compound or not remains to be tested The lack of sensitive...
... yielded Kd and Kds values of 0.47 L/g and 0.56 L/g for the MBR biomass, and 0.32 L/g and 0.61 L/g for the CBR biomass, respectively Using these values, the hysteresis index values for the MBR and CBR ... relationship between what is on the surface and what is in the aqueous phase, a relationship generally referred to as a sorption isotherm The term isotherm comes from the idea that the equilibrium is reached ... function of the sludge retention time (SRT) Oppenheimer and Stephenson5 studied the removal of 20 PPCPs in full-scale and pilot-scale WWTPs in the United States, and they organized their data...