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The Limits of Biological Treatments

The eye of the beholder theme echoes Diane McGuinness (1989), who has systematically debunked ADHD as the emperor s new clothes. In a chapter in The Limits of Biological Treatments for Psychological Distress, she observed,... [Pg.269]

Fisher, S., Greenberg, R. (1989). The limits of biological treatments for psychological distress Comparisons with psychotherapy and placebo. Hillsdale, NJ Lawrence Erlbaum. [Pg.483]

These nutrients are important in natural waters because, in excess, they can cause nuisance growth of algae or aquatic weeds. In wastewater treatment, a deficiency of nutrients can limit the effectiveness of biological treatment processes. In some plants treating industrial wastewaters, ammonia or phosphoric acid must be added as a supplement. [Pg.205]

Since the longer the carbon chain length of the solute, the lower is the water solubility and the more limited are the options for biological treatment. The efficiency of dehydrated cells in hydrolyzing a range of halogenated compounds was also examined [14]. [Pg.271]

Like water, arsenic in contaminated soils, sediments, and even solid wastes may be treated with plants, fungi, bacteria, or other biological organisms. The applications, limitations, and advantages of biological treatment methods with solid materials are often similar to those with water. To be exact, many bioremediation methods are designed to simultaneously treat contaminants in soils, sediments, and water (e.g. phytoremediation). [Pg.406]

There are many studies of the transfer of electrons from enzymes to substrates, across biological membranes, to (or from) electrodes from (or to) substrates, between adsorbed molecular dyes and semiconductor particles, within synthetic films and nano-scale arrays, within molecular wires , and so on. Only a few, general comments will be offered on these topics here. The basic physics of molecular electron transfer does not change with the scale of the system, as long as identifiable molecular moieties are present with at least partly localized electronic configurations. The nature of the properties observed, the experimental probes available, and the level of theoretical treatment that is useful may be very different. Different approaches, different limiting models are used for extended arrays (or lattices) of very strongly coupled moieties. [Pg.1194]

In recent years, effluent limitations in the United States for industrial wastewaters have undergone a marked change. Previous criteria related only to BOD and suspended solids in the most cases, which could be readily met with conventional biological processes. Present criteria include specific priority pollutants, heavy metals, and in many cases a stringent bioassay. Depending on the wastewaters involved, biological treatment alone is not capable of meeting these criteria. [Pg.44]

A recent study has shown that the PERT assay can be used to monitor the effect of antiretroviral treatment of HIV-1 infected patients. In this study, HIV RNA by the Roche HIV Monitor assay (Roche Diagnostic Systems, Inc., Branchburg, NJ) became undetectable in 33 of 125 samples (26.4%) from 23 patients treated with an antiretroviral combination therapy. Particle-associated RT correlated well with the values of viral RNA, but remained above the detection limit of the PERT assay, even in samples that were negative by both PCR for viral RNA and a p24 antigen detection procedure shown to be as sensitive as PCR (14). Moreover, the susceptibility to RT inhibitors of virus populations taken from biological fluids ex vivo can be directly assessed in vitro, without a need to first amplify the virus in cell culture. Thus, the RT activity... [Pg.302]


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