نتایج جستجو برای: toluene sulfonic acid
تعداد نتایج: 754583 فیلتر نتایج به سال:
UNLABELLED Location of the sentinel lymph node in malignant melanoma and early breast cancer patients requires separate injections of radiocolloid and blue dye. These agents are administered at alternative times because of their different rates of transit. This study has elucidated why particular dyes are absorbed by the lymphatic system from an investigation of dye molecular structure as a fun...
Background Pain in patients with chronic pancreatitis is critical hallmark that accompanied inflammation, fibrosis, and destruction of glandular pancreas. Many researchers have demonstrated that stromal cell-derived factor 1 (also named as CXCL12) and its cognate receptor C-X-C chemokine receptor type 4 (CXCR4) involved in mediating neuropathic and bone cancer pain. However, their roles in chro...
The results of industrial investigations have shown a correlation between the rate of hippuric acid excretion in a single urine sample collected after daily occupational exposure and the amount of toluene absorbed. The rate of hippuric acid excretion and the average concentration of toluene vapour during exposure time were also related. The quantitative range of the test has been limited to amo...
bis(indolyl)methanes are important group of bioactive metabolites of terrestrial and marine regions. they were synthesized by different methods. herein, a clean, one-pot synthesis of bis(indolyl)methane derivatives by cyclo-condensation reaction of indole and various aldehydes using sulfonic acid functionalized silica (sio2-pr-so3h) in aqueous media is reported. the advantages of this new metho...
Ogata, M., Takatsuka, Y., and Tomokuni, K. (1971). Brit. J. industr. Med., 28, 382-385. Excretion of hippuric acid and mor p-methylhippuric acid in the urine of persons exposed to vapours of toluene and mor p-xylene in an exposure chamber and in workshops, with specific reference to repeated exposures. Four male volunteers were exposed to 200 p.p.m. of toluene for five one-hour periods separate...
Lithium-ion batteries have evolved and transcended in recent years to power every device across the spectrum, from watches electrical vehicles beyond. However, lithium-ion battery requires use of heavy expensive transition metal oxides that limited life cycles. Conductive polymer nanocomposites been shown possess good electrochemical thermomechanical properties are considered be effective alter...
A high-density sulfonic acid polymer, grafted onto a carrier surface, was synthesized from the acid form of vinylsulfonic acid monomer, and its catalytic activity as a new class of heterogeneous acid catalyst demonstrated in esterification reactions.
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