✓ Ninety-three endarterectomies for carotid stenosis were monitored with cerebral blood flow (CBF) measurements, and 113 both CBF measurements a continuous electroencephalogram (EEG). Significant increase occurred only when endarterectomy was greater than 90%. A high correlation between EEG indicated shunt required. To sustain normal EEG, the ascertained by initial slope technique must be 18 ml/100 gm/min at an arterial carbon dioxide tension (PaCO 2 ) of 40 torr. The degree change below...

The Goodman Spectrograph is an imaging, multi-object spectrograph for the SOuthern Astrophysical Research telescope (SOAR). It one of first designed to take advantage Volume Phase Holographic (VPH) gratings by employing articulated camera. This aspect mechanical design has had complicating effects on a number usually simple systems, and led some unorthodox solutions. also highly optimized efficiency from 320 850 nm, rapid configuration changes, so that its throughput makes it competitive...

The prevalence and incidence of infection by the human immunodeficiency virus (HIV) has been under study in a cohort 1,034 single men recruited area probability sampling from six kilometer square San Francisco where epidemic acquired syndrome (AIDS) most severe. Prevalence among homosexual/bisexual subjects increased an estimated 22.8 per cent during last half 1982 to 48.6 period July through December 1984. During three subsequent six-month periods, remained stable at approximately 50 cent....

Cephalocervical or intracranial fibromuscular dysplasia (FMD) can be identified by its characteristic angiographic appearance. Most of these lesions occur adjacent to the C1-2 interspace, characteristically sparing origins and proximal segments major extracranial vessels. Approximately 65% our patients had bilateral involvement cervical internal carotid arteries. Thirty percent were associated with one more aneurysms. The vertebral arteries involved in 10% cases. Twenty-four 25 cases...

This study draws on data from descriptive case studies of 15 high schools, three in each five states. The findings highlight constraints the availability college counseling, differences counseling across and influence districts, higher education institutions, states nature counseling. suggests that, context limited fiscal other resources, changes federal state financial aid policies, district policies pertaining to relationships with institutions will help ensure that all students receive sufficient

Background and Purpose —During focal cerebral ischemia, the ischemic penumbra or border-zone regions of moderate cortical blood flow reductions have a heterogeneous development intracellular acidosis. This experiment tested hypotheses that (1) this acidosis is secondary to glucose utilization (2) leads recruitment potentially salvageable tissue into infarction. Methods —Brain pH i , regional flow, NADH redox state were measured by in vivo fluorescent imaging, infarct volume was assessed...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAutomation in Analytical ChemistryCite this: Anal. Chem. 1958, 30, 12, 25A–34APublication Date (Print):December 1, 1958Publication History Published online16 May 2012Published inissue 1 December 1958https://doi.org/10.1021/ac60144a717RIGHTS & PERMISSIONSArticle Views215Altmetric-Citations1LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all...

A single step, silver nitrate thin layer chromatographic procedure which separates a methyl ester mixture containing 0-6 double bonds is described. Purity of each recovered from the plate was 98-99%. Recovery esters ranged 100% for saturates to 77% pentaenes.

Newer computed tomography (CT) scanners provide a means for direct measurement of the size normal and abnormal body structures from viewing screen. Because tissue densities within brain tend to fall in narrow range, viewer control settings (window width window center) are used relatively stereotyped fashion when studying head scans. In contrast, CT scan images usually include tissues widely different require much broader use complete examination. Studies effect changing have uncovered wide...

✓ Intracranial gas may be epidural, subdural, subarachnoid, parenchymal, or intraventricular. air can easily diagnosed and its location correctly assessed by computerized tomography. Potentially serious complications of intracranial air, such as tension pneumocephalus, rapidly accurately identified, facilitating appropriate clinical therapy.

In acute multiple sclerosis, cranial computerized tomography (CT) may show periventricular and deep white matter contrast-enhanced lesions that are easier to see using 8 mm rather than 13 CT sections. Follow-up studies the evolve either areas of density similar surrounding or low-density lesions. We presume they represent foci active demyelination with extravasation iodine through an altered blood-brain barrier. Enhanced be helpful in diagnosing sclerosis following course

Abstract The radiosensitivity of T cells was investigated by studying the effect irradiation in vitro suppressing capacity parental strain thoracic duct lymphocytes (a) to induce splenomegaly newborn F 1 mice, and (b) proliferate adult irradiated mice as measured incorporation tritiated thymidine ([ 3 H]dThd) 4 days after transfer. By these parameters, small were found be highly radiosensitive. It calculated that, with reactivity alloantigens studied, 0.3 % capable a proliferative response...

Abstract To study the effect of irradiation on cell migration, populations recirculating lymphocytes consisting predominantly either T or B were labeled with 51 Cr, exposed to various doses in vitro and transferred intravenously syngeneic mice. Cell recipients killed at intervals determine levels radioactivity organs. On basis radioactive counts, small homed normally lymphoid tissues within 4 h injection (primary migration) spite prior exposure heavy irradiation, e.g. 5000 r. Primary...

Abstract A simple and reproducible method of quantitating the amount hematoporphyrin derivative by fluorescence microscopy in biopsies tumors from patients undergoing photoradiation therapy is presented, substantiated laboratory studies experimental central nervous system normal rat tissues. The literature regarding quantitation reviewed, implications this study for future application design are discussed.

A comparison of regional cerebral blood flow measurements made with beta- and gamma-emitting isotopes revealed good correspondence in areas normal perfusion reactive hyperemia but poor focal ischemia. After middle artery occlusion at normocapnia, there was a 65% reduction from 1.40 plus or minus 0.27 ml/g min--1 to 0.49 0.10 monkeys studied 85Kr only 27% 0.84 0.09 0.61 0.08 133Xe. The lack correlation within focal, incomplete ischemia attributed an impairment isotope delivery the area...

Article1 January 1964Myelofibrosis with Myeloid Metaplasia in Survivors of the Atomic Bomb HiroshimaROBERT E. ANDERSON, M.D., TAKASHI HOSHINO, TSUTOMU YAMAMOTO, M.D.ROBERT M.D.Search for more papers by this author, authorAuthor, Article, and Disclosure Informationhttps://doi.org/10.7326/0003-4819-60-1-1 SectionsAboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinkedInRedditEmail ExcerptIdiopathic generalized myelofibrosis myeloid metaplasia is a...