Brainstem gliomas constitute 10% of brain tumors in children and less than 2% in adults. Since therapeutic options are limited and brainstem gliomas are associated with a high morbidity and mortality, we sought to analyze the prognostic factors associated with a better outcome. We reviewed the records of 86 patients with brainstem gliomas treated between 1996 and 2006. We recorded demographic a...

Leuthardt [1938a] and Bach [1939] have expressed the opinion that in addition to the ornithine cycle there are other mechanisms of urea synthesis in the mammalian liver. Leuthardt [1938a] found that liver of starved guinea-pigs forms urea more rapidly from glutamine than from NH4Cl. He concluded that NH3 cannot be an intermediate in the urea formation from glutamine and that there is a more or ...

Microcomputer virus programs have become a serious problem for users of DOS-based microcomputers. Although the number of viruses in circulation is growing steadily, fewer organizations are being disrupted by infections. Prompt detection of (and effective response to) virus infections is limiting the damage. The prudent course of action for organizations that use DOS-based microcomputers is to i...

INTRODUCTION Tympanometry is currently the most frequently used tool for assessing the status of the middle ear, commonly assessed using a single 226Hz tone. However, the use of the Acoustic Immittance Measures with a wideband stimulus is a promising high-resolution evaluation, especially in individuals known to have middle ear alterations, such as Down syndrome patients. OBJECTIVE The aim of...

FVT of I , 1 -dichloroand/or 1 -chloroethenyl substituted PAHs gives access to the CP-PAH's pyracylene (l), cyclopenta[cd]pyrene (12) and benz[ghi]fluoranthene (13), cyclopent[hi]aceanthrylene (18) and cyclopent[hi]acephenanthrylene (19), and the novel cyclopenta[cd]fluoranthene (22) and isomeric cyclopent[fg](25a), cyclopent[ik](25b) and cyclopent[rnn]acepyrylene (25c), respectively. The prope...

Chlorinated solvents are the most prevalent organic contaminants found in ground water (Stroo et al. 2003), and in the dissolved phase they are typically mobile and recalcitrant, particularly trichloroethylene (TCE) and tetrachloroethylene (PCE). Schwille (1984, 1988) was the first to recognize that chlorinated solvent plumes (i.e., zones of dissolved phase contaminants) are caused by immobile ...