Some Chemical Reactions of Sulphur Hexafluoride

[Use of sulphur hexafluoride in trabeculectomy].

extraction and acetylation of purified trypsin from bovin pancreas and study of some its physico-chemical properties

آنزیم تریپسین در شرایط قلیایی ناپایدار می باشد .و فعالیت پروتئولیتیکی تریپسین منجربه خود هضمی آن در جایگاههای خاصی می گردد. بنابر این آنزیمی با ناپایداری بالا محسوب میگردد. در سالهای اخیر موفق شدند که با ایجاد تغیرات شیمیایی با اضافه کردن فلزات خاص ، کلسیم و یا عمل استیلاسیون منجر به افزایش پایداری آنزیم تریپسین گردند. مطالعات در حال حاضر نشان می دهد که تریپسین استیله شده فعالیت آنزیمی خود را ...

Synthesis, reactions and biological activity of some new bis-heterocyclic ring compounds containing sulphur atom

BACKGROUND The derivatives of thieno[2,3-b]thiophene belong to a significant category of heterocyclic compounds, which have shown a wide spectrum of medical and industrial application. RESULTS A new building block with two electrophilic center of thieno[2,3-b]thiophene derivatives 2 has been reported by one-pot reaction of diketone derivative 1 with Br2/AcOH in excellent yield. A variety of h...

SOME CHEMICAL REACTIONS OF THE SUBSTANCE CONTAIiVING INSULIN.*

The pancreatic substance containing insulin1 used in the experiments recorded below was prepared from the pancreas of hogs according to the method developed2 by Mr. George B. Walden of the Lilly Research Laboratories, and which has been published by the Council of Pharmacy and Chemistry of the American Medical Association.3 This experiment, which is an extension of Mr. Walden’s work, was starte...

Chemical non-equilibrium and deconfinement in 200 A GeV Sulphur induced reactions

We interpret hadronic particle abundances produced in S–Au/W/Pb 200 A GeV reactions in terms of the final state hadronic phase space model and determine by a data fit of the chemical hadron freeze-out parameters. Allowing for the flavor abundance non-equilibrium a highly significant fit to experimental particle abundance data emerges, which supports possibility of strangeness distillation. We f...