نتایج جستجو برای: methanol concentration
تعداد نتایج: 407058 فیلتر نتایج به سال:
background: the repetitive use of antibiotics in different fields (veterinary and medicine) improves the emergence and occurrence of the resistance phenomenon in pathogenic bacteria. due to the problem of antimicrobial resistance, it is an urgent need to discover new drugs and alternative treatments for the control of bacterial diseases in aquaculture. objectives: the purpose of this study is t...
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...
Cornsilk refers to stigmas of female maize flowers. Corn silk contains abundant flavonoids. Flavonoids show a variety biological activities, such as antioxidants. Several methods, microwave, ultrasonic, supercritical fluid extraction, and multiple extraction technologies, were used extract flavonoids from corn silk. The ultrasonic-assisted method (UAE) seems be very reliable among these methods...
A silicon carbide based field effect transistor (SiC-FET) structure was used for methanol sensing. Due to the chemical stability and wide band gap of SiC, these sensors are suitable for applications over a wide temperature range. Two different catalytic metals, Pt and Ir, were tested as gate contacts for detection of methanol. The sensing properties of both Ir gate and Pt gate SiC-FET sensors w...
The present paper demonstrates the increased photostability of isotretinoin when loaded in microemulsion. The photodegradation of isotretinoin, in methanol and microemulsion formulation was studied under direct sun light. The photodegradation process was monitored by UV spectrophotometry. In methanol solution, isotretinoin undergoes complete photodegradation just within a few minutes of light e...
A patient intentionally ingested an unknown amount of methanol and was admitted to the hospital 6 h later. On admission, the methanol concentration in blood was estimated as approximately of 134 mmol/L, based on the calculation of the osmolal gap. Intravenous ethanol administration and hemodialysis were promptly started. During hemodialysis, several blood samples were collected for determinatio...
Objective: The aim of the present investigation was to evaluate the phytochemical constituents, free radical scavenging activities and antioxidant properties of the methanol extract of leaves of Artocarpus heterophyllus. Methods: The phytochemicals in the methanol extract of leaves of A. heterophyllus were determined qualitatively and quantitatively using standard methods. The antioxidant activ...
The metabolism of methanol was monitored in whole cells of the methylotrophic yeast Hansenula polymorpha by using [13C]methanol and n.m.r. in vivo. The main products observed under normal conditions were trehalose and glycerol, whereas cells that were starved before exposure to [13C]methanol also accumulated glutamate, glutamine and alanine; formate was also more prominent in spectra from starv...
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