نتایج جستجو برای: methanol loss
تعداد نتایج: 475888 فیلتر نتایج به سال:
BACKGROUND The use of edible plants is an integral part of dietary behavior in the West region of Cameroon. Dorstenia psilurus (Moraceae) is widely used as spice and as medicinal plant for the treatment of several diseases in Cameroon. The aim of this study is to investigate the cytotoxic and apoptotic potential of methanol extract of D. psilurus in human promyelocytic leukemia (HL-60) cells an...
The original quantitative procedure for bilirubin of Van den Bergh (1) was based upon comparison of the color of an ether extract, first with ferric thiocyanate solutions and later with cobalt sulfate standards. This inaccuracy of standardization has been eliminated by the availability of purified bilirubin in both solid form and in comparatively stable solutions, and by the adaptation of the p...
We have successfully produced bimetallic PtNi alloy nanoparticles on poly (diallyldimethylammonium chloride) (PDDA)-modified graphene nanosheets (PtNi/PDDA-G) by the “one-pot” hydrothermal method. The size of PtNi alloy nanoparticles is approximately 2–5 nm. The PDDA-modified graphene nanosheets (PDDA-G) provides an anchored site for metal precursors; hence, the PtNi nanoparticles could be easi...
Low cost, durable, and selective membranes with high ionic conductivity are a priority need for wide-spread adoption of polymer electrolyte membrane fuel cells (PEMFCs) and direct methanol fuel cells (DMFCs). Electrolyte membranes are a major cost component of PEMFC stacks at low production volumes. PEMFC membranes also impose limitations on fuel cell system operating conditions that add system...
Cordia dichotoma known as lasura, lisora, is a commonly known herb in Indian system of medicine to treat various disorders including diabetes mellitus without any scientific evidences. Therefore this study was designed to investigate in vivo hypoglycemic and antidiabetic potential of methanol extract of fruits of Cordia dichotoma in glucose loaded animals and alloxan induced diabetic animals. I...
Catalysts for CO2-to-methanol are typically evaluated in a single-pass regime using pure CO2streams. In practical process however, CO shall be present as feed impurity or recycled byproduct. Herein, the sensitivity to was on In2O3 catalysts bulk, supported, metal-promoted forms, cycle experiments with variable CO2 and contents at H2/(CO + CO2) = 4. The methanol productivity decreased (?20-?40 %...
Cyanobacteria can produce heptapetides called microcystins (MC) which are harmful to humans due to their ability to inhibit cellular protein phosphatases. Quantitation of these toxins can be hampered by their adsorption to common laboratory-ware during sample processing and analysis. Because of their structural diversity (>100 congeners) and different physico-chemical properties, they vary in t...
Artifact-free, high-resolution matrix-assisted laser desorption ionization (MALDI) time-of-flight mass spectra have been obtained for the labile, single-isomer, tert.-butyldimethylsilyl ether derivatives of alpha-, beta- and gamma-cyclodextrins by optimizing the MALDI sample preparation method. 2,5-Dihydroxybenzoic acid, a 3:1 mixture of 2,5-dihydroxybenzoic acid and 1-hydroxyisoquinoline, and ...
Methanol is the second most abundant volatile organic compound in the troposphere and plays a significant role in atmospheric chemistry. While there is consensus about the dominant role of living plants as the major source and the reaction with OH as the major sink of methanol, global methanol budgets diverge considerably in terms of source/sink estimates reflecting uncertainties in the approac...
We estimated kinetic parameters associated with methanol disposition in humans from data reported in the literature. Michaelis-Menten elimination parameters (Vmax = 115 mg/L/hr; Km = 460 mg/L) were selected for input into a semi-physiologic pharmacokinetic model. We used reported literature values for blood or urine methanol concentrations in humans and nonhuman primates after methanol inhalati...
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