In a first course in functional analysis, a great deal of time is spent with Banach spaces, especially the interaction between such spaces and their dual spaces. Banach spaces are a special type of topological vector space, and there are important topological vector spaces which do not lie in the Banach category, such as the Schwartz spaces. The most fundamental theorem about Banach spaces is t...

In the title salt, C6H10N3O2 (+)·C7H7O3S(-), the imidazole ring makes a dihedral angle of 70.93 (12)° with the plane of the toluene ring. In the crystal, the ions are linked via N-H⋯O and weak C-H⋯O hydrogen bonds forming two-dimensional networks lying parallel to (001). These networks are linked via C-H⋯π inter-actions, forming a three-dimensional structure.

In the history of the Rice Dramatic Club, there have been occasions when it has fallen in the power of the or ganization to produce outstanding modern dramas by contemporary playwrights—plays rich in enter ta inment quality, subtle in humor ; plays which live in the minds of the a u dience long af ter the final curtain falls. Such plays as "The Roynl Family," "Hay Fever ," and "Hell Bent for He...

Results of a new analysis of the K+K− photoproduction at two photon energies Eγ = 4 GeV and 5.65 GeV with a particular emphasis on the S-wave production are presented. We show that the proper treatment of all the helicity components of the Sand P -waves enables one to eliminate the reported discrepancies in extraction of the S-wave photoproduction cross section from experimental data.

In Fig. 1 are presented two curves of the cross section versus energy which correspond adequately to the data. Curve A is similar to the curve used by Anderson, Davidon, and Kruse. ' Curve 8 begins to rise more rapidly near 100 Mev, which may be attributed to the influence of some of the p waves. It should be noted that the difference between curves A and 8 is permitted chief by the data near 1...

Biogenic silica (BSi) and phosphorous (P) accumulation were investigated in sediment cores from Karlskärsviken, a bay of Lake Mälaren. The aim was to make use of BSi and P relations in sediment stratigraphies in order to investigate the historical nutrient trophy in a near shore lake environment since the Middle Ages, with focus on industrial times, and to evaluate anthropogenic influences on t...

OBJECTIVE To assess trends in caesarean delivery and its associated factors in south-western Iran. SUBJECTS AND METHODS This cross-sectional study was conducted from January 2007 to January 2010 in Fars province, Iran. All deliveries recorded in public and private hospitals were included. The Mann-Whitney U test, χ2 test and multivariate logistic regression models were used for analysis of da...