نتایج جستجو برای: 20000 and 40000 ppm
تعداد نتایج: 16830775 فیلتر نتایج به سال:
Nutritive values of green and black tea by-products and anti-nutritive activity of their tannins were evaluated in an in vitro rumen fermentation using various molecular weights of polyethylene glycols (PEG), polyvinyl pyrrolidone (PVP) and polyvinyl polypyrrolidone as tannin-binding agents. Significant improvement in gas production by addition of PEG4000, 6000 and 20000 and PVP was observed on...
A significant cost in PPM data compression (and often the major cost) is the provision and efficient coding of escapes while building contexts. This paper presents some recent work on eliminating escapes in PPM compression, using bit-wise compression with binary contexts. It shows that PPM without escapes can achieve averages of 2.5 bits per character on the Calgary Corpus and 2.2 bpc on the Ca...
An environment is a set of name-value bindings, maintained for a particular user, tha t are provided to a process at runtime. This can provide a great deal of flexibility in tai loring the behavior of programs to a particular user's preferences. It can also serve as a simple me ans of interprocess communication. To be useful, however, the environment must take into ac count the natural structur...
Background & Aims of the Study: Air pollution is currently one most important industry challenges for countries. Much progress has been made in modeling air pollution, which AERMOD model, based on Gaussian model. This study investigates temporal changes NO2 , SO2 and CO pollutants emitted from stack turbines gas furnaces Maroon oil facilities Omidieh City, Iran. Materials Methods: First, co...
In recent times, and in order to maintain an integrated, efficient and homogeneous policy, Integrated Management Systems (IMS) have emerged as an opportunity to improve processes related to Information Technology (IT) in organizations in a way that is modular, consistent and orderly. The ISO 27001 and ISO 20000 standards provide good practices for creating and/or strengthening management infras...
The present research was aimed to develop the meclizine hydrochloride-polyethylene glycol 20000 solid dispersions to enhance the solubility and dissolution rate. They were prepared using solvent evaporation method and evaluated for solubility studies, drug-carrier compatibility studies and in vitro dissolution studies. From the solubility studies, formulation F4 was selected to prepare the fast...
BACKGROUND HBeAg negative hepatitis B infection exerts both inactive carrier state and chronic active hepatitis, which are sometimes difficult to differentiate. Serial hepatitis B virus (HBV) DNA quantification, alanine transaminase (ALT) measurement, and liver histology assessment can help to differentiate these forms of hepatitis B infection. OBJECTIVES We aimed to clarify the clinical and ...
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