Direct measurement of the phi(1020) leptonic branching ratio.

The process e(+)e(-)-->mu(+)mu(-) has been studied by the SND detector at the VEPP-2M e(+)e(-) collider in the phi(1020)-resonance energy region. The measured effective phi meson leptonic branching ratio B(phi-->l(+)l(-)) identical with square root of B(phi-->e(+)e(-))B(phi-->mu(+)mu(-))] = (2.89 +/- 0.10 +/- 0.06) x 10(-4) agrees well with the Particle Data Group value B(phi-->e(+)e(-)) = (2.91 +/- 0.07) x 10(-4), confirming mu-e universality. Without additional assumption of mu-e universality the branching ratio B(phi-->mu(+)mu(-)) = (2.87 +/- 0.20 +/- 0.14) x 10(-4) was obtained.

Experimental (NMR) and Computational (MD) Studies on the Inclusion Complexes of 1-Bromoadamantane with alpha-, beta-, and gamma-Cyclodextrin.

The inclusion complexes between the most commonly used cyclodextrins (alpha-, beta-, and gamma-CD) and 1-bromoadamantane were prepared and studied experimentally by NMR methods and by molecular dynamics simulations (AMBER force field) with solvation. The NMR results suggest host/guest ratios of 2:1, 1:1, and 1:1 for the complexes with alpha-, beta-, and gamma-cyclodextrin, respectively, as well as defined geometries for the complexes. Averaged geometrical data from the molecular dynamics simulations agree with the complexation geometries deduced experimentally.

[Activity of various intracellular enzymes of the gastric mucosa in chronic gastritis and tumors]. / Aktivnost' nekotorykh vnutrikletochnykh fermentov slizistoi zheludka pri khronicheskom gastrite i opukholiakh.

Changes in levels of such redox enzymes of gastric mucosa as cytochrome oxidase, carboanhydrase and succinic dehydrogenase occurring in various forms of chronic gastritis were assessed with respect to morphological peculiarities and secretory function. A total of 102 cases (77--various forms of gastritis, 11--gastric neoplasms and 14--controls) were examined. Specific changes in atrophic antral and chronic histamine-resistant achlorhydric gastritis were identified.

[Acute cholecystitis in choledocholithiasis and stricture of the ampulla of Vater]. / Ostryi kholetsistit pri kholedokholitiaze i strikture bol'shogo duodenal'nogo soska

The work is based on the examination of 106 patients, operated in the clinic for acute cholecystitis associated with choledocholithiasis and strictures of Vater's papilla. The operation of choice is a removal of pathologically changed gallbladder, elimination of the cause of cholestasis with restoration of bile passage in the bowel. The technic of choledochoduodenostomy adopted in the clinic is described. The immediate mortality was observed in 2.8%. Choledochoduodenostomy yielded good results in 81.1%, external drainage -- in 70.6%.