The large majority of the criteria for model selection are functions of the ̂ 2, the usual variance estimate for a regression model. The validity of the usual variance estimate depends on some assumptions, most critically the validity of the model being estimated. This is often violated in model selection contexts, where model search takes place over invalid models. A cross validated estimate of...

Studies conducted by the National Toxicology Program on the chronic toxicity of benzene indicated that B6C3F1 mice were more sensitive to the carcinogenic effects of benzene than were F344 rats. A physiological model was developed to describe the uptake and metabolism of benzene in rats and mice. Our objective was to determine if differences in toxic effects could be explained by differences in...

Pesticides Pollutants are a major ecological issue because they kill organisms that not their intended targets. Even in trace amounts, diversity, toxicity, and durability harmful to natural systems. High levels of malathion the air, water, or food can make breathing difficult, tighten chest, cause nausea, cramps, diarrhoea, watery eyes, impaired vision, salivation, perspiration, headaches, even...

Lilium cut flowers have commercial importance and extending their vase life is vital. An increase in the quality quantity can directly viability price realization of commercially important like lilium. Shelf lilium flower influenced by using different preservative chemicals sucrose added solution. Such an extension be achieved via chemical treatment. The trial was carried out to examine effect ...

Mycotoxins are harmful secondary metabolites generated by a variety of fungi, and they may be found in vast array food feed commodities processed meats from animals fed infected meal. Numerous mycotoxins extremely resistant survive processing, entering the chain posing concern to human health. The "optical waveguide lightmode spectroscopy" (OWLS) method was used detect aflatoxin B1 plant sample...

Basic Green 4 or Malachite (MG) is an important dye that found great usage in controlling fish pathogens. The use of MG has been banned but developing, and third-world countries still applications for this dye. Bioremediation dyes using microorganisms on the rise. ability to accurately predict rate bioremediation relies upon gathering accurate decolourisation, which often inhibited at high conc...

Dyes plays an important role in our everyday life. From manufacturing plastics, paints, textile and even pills contain traces of dye used. With the ever-increasing demand for with growing world populations, use synthetic dyes has grown linearly. Bioremediation using microorganisms is on rise. The ability to accurately predict rate bioremediation relies upon gathering accurate decolourisation, w...

Despite the ongoing progress in metallurgical characterisation of machined surfaces, knowledge thermal conditions under which they originate during workpiece-flank interaction is still lacking. When cutting advanced superalloys, little known about temperature evolution part volume, where workpiece material interacts with tool flank. In this work, characteristics field and resulting surface meta...

Purpose: To develop a sensitive and rapid reverse phase high performance liquid chromatography (HPLC) method for the measurement of the levels of zidovudine (ZVD) and nevirapine (NVP) in human plasma. Methods: Standard stock solutions for HPLC analysis were prepared by dissolving ZVD and NVP in methanol. In the HPLC measurement, sample detection was carried out at 246 nm using an ultraviolet (U...

VAR models [13] are a type of multi-equation model that linearly describe the simultaneous interactions and behaviour among a group of variables using only their own past. More specifically, a VAR is a model of simultaneous equations formed by a system of equations in which the contemporary values of model variables do not appear in any explanatory variable in the equations. The set of explanat...