نتایج جستجو برای: acetic acid solution 4000 ppm or hydrogen peroxide 2000 ppm could be used in general
تعداد نتایج: 17643127 فیلتر نتایج به سال:
data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...
abstract ion selective electrodes (ises) are electrochemical sensors that respond selectivity to the activity of ionic species. an ion-selective electrode is an electrochemical device that uses a thin selective membrane or film as the recognition element, and is an electrochemical half-cell equivalent to other half-cells of the zeroth (inert metal in a redox electrolyte). in common methods o...
Effects of hormonal priming with abscisic acid (ABA), salicylic acid (SA), or ascorbic acid on wheat (Triticum aestivum cv. Auqab 2000) germination and seedling growth under normal (4 dS/ cm) and saline (15 dS/ cm) conditions were studied to determine their usefulness in increasing relative salt-tolerance. During germination test, most of treatments were effective in improving germination and s...
asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...
the present study examined the utilisation of seaweed extract as a source of natural antioxidantsfor retarding lipid oxidation in minced kilka. the kilka mince with two different concentrations(300 ppm and 600 ppm) of water extract obtained by microwave, one control sample with noadded extracts and one control sample with added vitamin c were prepared. the samples werestored at refrigerator (4º...
The Natuna gas field is one of the largest natural reserves in Indonesia with estimated 222 TCF. However, until now, use still hampered because very high CO 2 content reaching 71%, while methane around 28%. dry reforming (DRM) process potential ways to be applied for solving these problems convert CH 4 and synthesis containing H as a raw material that can manufacture intermediate products or en...
1. introductionsynthetic dyes and specially azo dyes are common pollutants found in textile and dyeing industries effluent. azo dyes are the most important class of synthetic dyes and and represent about 70% of all world dyes consumption. textile effluent can cause considerable pollution and rise high health risk factors due to loos of 20% of dyes in process and large scale of dyes used in thes...
among the low–dimensional allotropes of carbon, nanotubes and graphene have attracted very much attention from nano–science and nanotechnology specialists. they have been proposed as building blocks in nanometer device engineering. however, these structures are not defect–free. in this thesis, we focused on defective carbon nanotubes and graphene, and studied the effect of couple of very common...
The objectives of this study were to evaluate and validate analytical methods for analysis of persistent organic pollutants (POP) in house dust and soil and to obtain concentration profiles for the target POP in house dust and soil samples from the homes of 13 lowincome families. The analytical method for determining p-pentylphenol, poctylphenol, nonylphenols, and bisphenol-A consisted of seque...
BACKGROUND The efficacies of disinfection by sodium hypochlorite, accelerated hydrogen peroxide (AHP), and quaternary ammonium compound (QUAT) commonly used in health care facilities were determined using the surrogate viruses murine norovirus (MNV-1) and feline calicivirus (FCV). METHODS A virus suspension of known concentration (with or without a soil load) was deposited onto stainless stee...
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