نتایج جستجو برای: methanol to propylene
تعداد نتایج: 10626131 فیلتر نتایج به سال:
Current trends in science and biotechnology lead to creation of thousands of new lines in model organisms thereby leading to the necessity for new methods for safe storage of genetic resources beyond the common practices of keeping breeding colonies. The main purpose of this study was to adapt the needle immersed vitrification (NIV) procedure to cryopreserve whole zebrafish testes. Cryopreserva...
M etabolic acidosis is a common acid-base disturbance in hospitalized patients. Distinguishing anion gap from non–anion gap metabolic acidosis is a very helpful exercise and enables the clinician to narrow the etiology of the particular acidosis. The use of the anion gap was popularized in an article by Emmett and Narins (1). Over the past few years, the list of conditions that can cause an ani...
Grand canonical Monte Carlo (GCMC) simulations have been performed to investigate the localization and adsorption behavior of benzene and propylene, which are involved in the cumene synthesis process, in purely siliceous MWW zeolite (ITQ-1). From the mass clouds of GCMC simulations, it can be seen that the benzene and propylene molecules show different localization and adsorption behavior in th...
A mass spectrometric method has been delineated for the identification of the epoxide functionalities in unknown monofunctional analytes. This method utilizes gas-phase ion/molecule reactions of protonated analytes with neutral trimethyl borate (TMB) followed by collision-activated dissociation (CAD) in an ion trapping mass spectrometer (tested for a Fourier-transform ion cyclotron resonance an...
The valorization of low-grade industrial residues into valuable materials has been a way to reduce the impact industry on planetary boundaries. Silicon-rich wastes have used for zeolite synthesis while impurities originating from vital role in physicochemical properties and catalytic performance waste-derived zeolites. Here, effect steaming zeolites were investigated. Steamed ZSM-5 maintained t...
To the Editor: We wish to substantiate the important observations of LeGatt and Tisdell (1) cautioning against the use of propylene glycol as an internal standard for quantifying ethylene glycol. A 32-yearold woman presented to our emergency department in an agitated state after the ingestion of multiple drugs in an attempted suicide. Gastric lavage and charcoal were administered as well as int...
The absolute vacuum ultraviolet (VUV) photoionization spectra of the hydroperoxyl radical (HO2), hydrogen peroxide (H2O2), and formaldehyde (H2CO) have been measured from their first ionization thresholds to 12.008 eV. HO2, H2O2, and H2CO were generated from the oxidation of methanol initiated by pulsed-laser-photolysis of Cl2 in a low-pressure slow flow reactor. Reactants, intermediates, and p...
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