Urea Hydrochloride
نویسنده
چکیده
Sir,?In reply to Capt. T. D. W. Gillespie's inquiry in the Novtmber issue of the I. M. Q. as to the quantity of quinine urea hydrochloride to be injected hypodermically to produce local anaesthesia, I may say as follows: In the New York Medical Journal (1915, II, 708) Amster recommends quin-urea hydro as a local anaesthetic. He has performed 200 severe operations with a freshly prepared solution containing 0'125% to 0*25% to which a few
منابع مشابه
Free energy changes in ribonuclease A denaturation. Effect of urea, guanidine hydrochloride, and lithium salts.
The unfolding of ribonuclease A by urea, guanidine hydrochloride, lithium perchlorate, lithium chloride, and lithium bromide has been followed by circular dichroic and difference spectral measurements. All three abnormal tyrosyl residues are normalized in urea and guanidine hydrochloride (delta epsilon 287 = -2700), only two are normalized in lithium bromide and lithium perchlorate (delta epsil...
متن کاملViscosity and density of aqueous solutions of urea and guanidine hydrochloride.
Densities and viscosities of aqueous solutions of urea and guanidine hydrochloride at 250 have been measured, and equations are presented which describe their variation with concentration. Densities and viscosities of similar solutions containing additional solutes (buffers, NaCI, -mercaptoethanol) have been measured, and the possibility of predicting these results from information on solutions...
متن کاملThe effect of urea and guanidine hydrochloride on activity and optical rotation of crystalline papain.
The catalytic activity of several proteolytic enzymes is altered by high concentrations of urea and guanidine salts (2-4). These studies, in conjunction with certain physical data, indicate that hydrogen bonding in the secondary structure of these enzymes is essential for maintenance of their catalytic function. Because of the increasing amount of information that is available concerning the st...
متن کاملBromophenol blue binding as a probe to study urea and guanidine hydrochloride denaturation of bovine serum albumin.
Urea and guanidine hydrochloride (GdnHCl) denaturation of bovine serum albumin (BSA) were investigated using bromophenol blue (BPB) binding as a probe. Addition of BPB to BSA produced an absorption difference spectrum in the wavelength range, 525-675 nm with a minimum at 587 nm and a maximum at 619 nm. The magnitude of absorption difference (DeltaAbs.) at 619 nm decreased on increasing urea/Gdn...
متن کامل