نتایج جستجو برای: veins
تعداد نتایج: 18101 فیلتر نتایج به سال:
In Khoy ophiolitic massif (NW of Iran) three types of quartzite and also quartz bearing veins can be distinguished: massive quartzite, quartz bearing veins in the amphibolites and siliceous veins in the radiolarian cherts. Massive quartzites contain quartz porphyroclasts associated with very small- deformed quartz neoblasts. These quartzites are deformed in regime I and recrystallized as grai...
introduction: cerebral venous-sinus thrombosis (cvst) is a life threatening condition that needs rapid diagnosis and treatment. it appears comparatively more common in middle east and south asia. objectives: to determine the demographic, clinical patterns, etiologies and prognostic factors of cvst in the north east of iran. materials and methods: all adult patients admitted with a documented di...
the goal of this study was to define the normal range of diameter in the deep vein of the lower limb and to compare this range with diameter of the veins with acute thrombosis and of veins with chronic thrombosis by using color doppler sonography. the study was cross sectional. the vein diameter and vein to artery ratio in different levels were measured and the following results were obtained. ...
Background: Methylenetetrahydrofolate reductase (MTHFR) is one of the key enzymes in the metabolism of folate, and the mutation of C677T leads to reduction of MTHFR enzyme activity and increases the risk of cardiovascular diseases. The aim of this study was to investigate the association between C677T polymorphism in MTHFR gene and some non-genetic factors and varicose veins. Methods: In this ...
The Argash antimony ore deposit is located at south of Neyshabour and the eastern part of the Sabzevar zone. This deposit occurs within a sequence of Eocene-Oligocene volcanic-intrusion rocks. The mineralization occurs as open space filling, taking place as irregular veins, veinlets and hydrothermal breccias. The mineralogy of the veins is comparatively simple. The primary antimony-bearing mine...
The Beshgaz manganese-bearing veins are located in ~45 km northeast of Birdjand, South-Khorasan, and east of Iran. These veins with 0.1-1.5 m thickness and 4-7 m length are engulfed discordantly within Paleocene (Eocene-Oligocene) volcanic-pyroclastic rocks. The host of Mn-bearing veins are dacite to rhyo-dacite tuff, lapilli tuff with andesitic and andsi-basaltic fragments in shear zones. The...
The Beshgaz manganese-bearing veins are located in ~45 km northeast of Birdjand, South-Khorasan, and east of Iran. These veins with 0.1-1.5 m thickness and 4-7 m length are engulfed discordantly within Paleocene (Eocene-Oligocene) volcanic-pyroclastic rocks. The host of Mn-bearing veins are dacite to rhyo-dacite tuff, lapilli tuff with andesitic and andsi-basaltic fragments in shear zones. The...
background: the clinical presentation of non-hodgkin lymphoma (nhl) varies tremendously depending upon the type of lymphoma and the areas of involvement. nhl can rarely present as an abdominal mass compressing the inferior vena cava. the clinical presentation due to obstruction of inferior vena cava has often been called the inferior vena cava syndrome (ivcs). it can present acutely or chronica...
essential thrombocythemia is a chronic myeloproliferative disorder characterized by a sustained proliferation of megakaryocytes, which leads to increased numbers of circulating platelets. hemorrhagic and/or thrombotic episodes are frequent, and thrombosis of both veins and arteries may develop. vessels in unusual sites may be involved, e.g., the hepatic veins, mesenteric veins, and the digital ...
total anomalous pulmonary venous connection (tapvc) is an anomaly in which the pulmonary veins are directly connected to one of the systemic veins or drain into the right atrium. management of pulmonary hypertension after the total correction of this congenital cardiac anomaly is very important. unligation of the vertical vein in the supracardiac type of this anomaly can be a draining pathway f...
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