Search results for "Tension"

Relazione tra massa ventricolare sinistra e insufficienza renale di grado lieve e moderato nell’ipertensione arteriosa

2007

Introduzione all'analisi sperimentale delle tensioni

2009

Galvassāpju izplatība Latvijas Universitātes medicīnas studentu vidū

2022

Ievads: Galvassāpju traucējumi, galvenokārt primārie, tiek uzskatīti par nopietnām globālām veselības problēmām, kas izraisa ievērojamu invaliditātes slogu slimniekiem, lai arī paradoksālā kārtā, bieži tiek ignorēti un nenovērtēti. Cilvēki savos produktīvajos gados irvisvairāk skartā grupa, un to vidū ir arī studenti. Mērķis: Pētījuma mērķis bija apkopot Latvijas Universitātes medicīnas studentu galvassāpju epidemioloģiskos un klīniskos raksturojumus, lainoteiktu cefalģijas izplatību, novērtētu riska faktorus, provocējošos faktorus, galvassāpju ietekmi un to mazināšanu ar medikamentiem, kā arī noskaidrot iespējamos iemeslus, kādēļ pētāmā populācija izvairās no specializētas galvassāpju trau…

L-arginine for testing endothelium-derived factors in essential hypertension

1999

Functional Morphology of Human Arteries During Fetal and Postnatal Development

1980

The equilibrium between the distending force of the blood pressure and the arterial wall is determined essentially by a simple law of mechanics, the law of Laplace. According to this law, the total force or tension (T) in the vessel’s wall represents the product of the radius of the vessel (r) and the blood pressure (p), T = r.p. The law of Laplace may be used to estimate and compare the tension produced by blood pressure in vessels of different size and thereby determine the increase in functional load on arteries. Since tension increases not only with blood pressure but also with the radius of the vessel, the highest tension is presumably produced in the wall of the ascending aorta where …

Determination of the Optimal Saddle Height for Leisure Cycling (P188)

2008

Several studies have been done on road racing cycling and triathlon to determine the optimal saddle height (LINF) in terms of efficiency. However, cycling is becoming nowadays not only a popular sport but also a mass mean of transport were comfort takes priority over efficiency. The aim of this study is to determine an optimal saddle height (LINF) to improve comfort in leisure cycling. Five male subjects (height mean=172.2 cm, std=1.34 cm; crotch height mean=81.25cm, std=0.88cm) tested 9 prototypes of the company ORBEA with 3 levels of LINF. The test consisted in one hour cycling in lab conditions and four different techniques were used to evaluate the LINF: 3-D movement analysis was used t…

Synthesis of nucleoside and nucleotide conjugates of bile acids, and polymerase construction of bile acid-functionalized DNA.

2010

Aqueous Sonogashira cross-coupling reactions of 5-iodopyrimidine or 7-iodo-7-deazaadenine nucleosides with bile acid-derived terminal acetylenes linked via an ester or amide tether gave the corresponding bile acid–nucleoside conjugates. Analogous reactions of halogenated nucleoside triphosphates gave directly bile acid-modified dNTPs. Enzymatic incorporation of these modified nucleotides to DNA was successfully performed using Phusion polymerase for primer extension. One of the dNTPs (dCTP bearing cholic acid) was also efficient for PCR amplification.

Enzephalopathie nach Intoxikation mit einem Anticholinergikum

2008

A 55-year-old chemical laboratory technician developed mydriasis and ocular hypertension, which lasted for 6 weeks, after synthesizing several kilograms of a scopolamine-related test agent with anticholinergic action and then decanting a powdery intermediary substance, the dust of which he may have inhaled. Six weeks later he suddenly had symptoms of an acute intoxication while synthesizing a scopolamine-related substance. The anticholinergic delirium regressed completely within one day requiring no treatment. But subsequently he developed symptoms of a toxic encephalopathy. This only partially regressed over the following 3 years. Its probable cause is thought to have been either the manif…

Changes of plasma endothelin and growth factor levels, and of left ventricular mass, after chronic AT1-receptor blockade in human hypertension.

1998

The stimulation of autocrine and paracrine factors such as basic fibroblast- (bFGF) and platelet-derived (PDGF) growth factors mediates many of the growth-promoting actions of angiotensin II. The aim of this study was to evaluate the effect of chronic AT1-receptor blockade on plasma endothelin-1 (ET-1) and growth factors levels, and on left ventricular mass, in essential hypertension (EH). The study population consisted of 16 patients with mild-moderate EH, and 25 normotensive controls. In the EH patients under basal conditions, and after 3 and 6 months of chronic therapy with Losartan 50 mg/day, we measured serum levels of ET-1, bFGF and PDGF, and tumor necrosis factor (TNF). At the same t…

Relationship between endothelin and insulin-like growth factor-1 in essential hypertension.

1999