where is the gsv measured
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Great Saphenous Vein Diameter at the Saphenofemoral Junction and Proximal Thigh as Parameters of Venous Disease Class Measuring great saphenous vein (GSV) diameter is standard in pre-interventional assessment of varicose disorders, but has never been properly validated. This work assessed the relative value of measuring GSV diameter at the most often used sites: the sapheno-femoral junction and the proximal thigh.
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Ultrasound assessment of great saphenous vein insufficiency The principle veins of the superficial system are the great saphenous vein (GSV), formerly known as either the greater or long saphenous vein, and the small saphenous vein (SSV), formerly known as the short, smaller, or lesser saphenous vein.
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- 1 This is termed linear , resistive or nonsaturated region. I ds is a function of both V gs and V ds  . When V ds > V gs - V t (e.g. V ds = 5V, V gs = 5V and V t = 1V), the channel is pinched off close to the drain (since V gd < V t ).
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What is the definition of global mean sea level (GMSL) and its rate? The term global mean sea level in the context of our research is defined as the area-weighted mean of all of the sea surface height anomalies measured by the altimeter in a single, 10-day satellite track repeat cycle. It can also be thought of as the eustatic sea level..The eustatic sea level is not a physical sea level (since the sea levels relative to local land surfaces vary depending on land motion and other factors), but it represents the level if all of the water in the oceans were contained in a single basin.ach point in the global mean sea level (GMSL) time series plots is the area-weighted mean of all of the sea surface height anomalies measured by the altimeter in a single, 10-day satellite track repeat cycle (time for the satellite to begin repeating the same ground track).
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Measurement of pO2, pCO2, pH, pulse oximetry and capnography The polarographic (Clark) oxygen electrode measures the oxygen partial pressure in a blood or gas sample. A platinum cathode and a silver/silver chloride anode are placed in a sodium chloride electrolyte solution, and a voltage of 700 mv is applied (Figure 1).ypothermia, pH-stat, and alpha-stat: the solubility of all gases, including CO2 and O2, in blood increases with a fall in temperature. Thus, hypothermia causes the pO2 and pCO2 to fall and the pH to rise.
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- Aortic cross-sectional areas and aortic distensibility were measured at four positions of the ascending and descending thoracic aorta. PWV was assessed from aortic blood flow velocity measurements in a aortic segment between the ascending aorta and the proximal descending aorta. The Lambda-Mu-Sigma (LMS) method was used to obtain percentile curves for aortic cross-sectional areas, aortic distensibility and PWV according to age.
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Factors of Weather and Climate There are two types of radiometers shown to measure solar radiation. Those that measure total solar radiation (UV, visible, and IR) are called pyranometers. They measure radiation in a 180º field of view. The other type of radiometer shown is a total ultraviolet radiometer (TUVR).
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- Values of G are determined either by measurement In the laboratory. on undisturbed soil samples or by calculations using shear wave velocity V. measured in situ, and the mass density of the soil. Mass density may be. determined using undisturbed soil samples or in situ density tests.
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Valgus Stress Test at 0Â° Valgus Stress Test at 0°. With a valgus stress test at 0°, one is assessing for the potential of a combined medial knee and cruciate ligament injury. When one applies a valgus force to the knee in full extension, the amount of medial gapping which occurs with an isolated medial knee injury is only 1-2 mm.
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- When usingthe standard proteins it is typically assumed that the vv values of thestandard and actually measured protein are identical. With thisassumption, the ratio of the molecular masses of the two proteins isidentical to the ratio of their I(0)s normalized against the concen-trations.
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An overview of liquid filled, dry type and GSU transformers ABB now offers standard solutions for DC converter transformers for up to ±800kV DC. A transformers located directly next to a power plant is called GSU (Generator Step-up Unit). A GSU transforms the electric power from the medium voltage of the generators to the high voltage transmission level. To balance power flow between parallel power lines, phase shifters can be used.
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- Surface air temperature. See also: Instrumental temperature record. The temperature of the air near the surface of the Earth is measured at meteorological observatories and weather stations, usually using thermometers placed in a Stevenson screen, a standardized well-ventilated white-painted instrument shelter. The thermometers should be positioned 1.25–2 m above the ground.
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- Measurements were carried out in 444 vein segments, (96 legs of 48 healthy volunteers, 52 legs of 35 patients with varicose veins). The common femoral vein (CVF), the femoral vein (FV) and the great saphenous vein (GSV) were investigated. The parameters of reflux and the relative venous diameter change (VD diff %) were measured simultaneously during a standardised Valsalva manoeuvre.
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secondary radiation Three types of units are used to measure ionizing radiation. The roentgen (R) is a unit of exposure dose applicable only to x-rays and gamma rays. It is the amount of radiation that produces 2.58 × 10−4 coulomb of positive and negative ions passing through 1 kilogram of dry air.
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- As we know, brackish water is something between freshwater and marine environment. The amount of salt in water is measured by the parameter called specific gravity (SG) with a device called hydrometer which measures the amount of salt with density. SG of the fresh water is 1,000, and saltwater has a SG of about 1,025.
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Journal Archive The viscosities of the glass measured over temperatures between 800°C and 1450°C covered the range 102 to 106 poises. To measure the viscosity below the softening point, a fibre elongation method was used down to 575°C. Each fibre is drawn from the parent glass sample and is subjected to a load.
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Solar irradiance Total solar irradiance (TSI), is a measure of the solar radiative power per unit area normal to the rays, incident on the Earth's upper atmosphere. The solar constant is a conventional measure of mean TSI at a distance of one Astronomical Unit (AU).Irradiance is a function of distance from the Sun, the solar cycle, and cross-cycle changes. Irradiance on Earth is most intense at points directly facing (normal to) the Sun.nsolation can be measured in space, at the edge of the atmosphere or at a terrestrial object. Insolation can also be expressed in Suns, where one Sun equals 1000 W/m 2 at the point of arrival, with kWh/m 2 /day expressed as hours/day.
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Geosynchronous Satellite Launch Vehicle Geosynchronous Satellite Launch Vehicle. Not to be confused with Geosynchronous Satellite Launch Vehicle Mk III. Geosynchronous Satellite Launch Vehicle (Hindi: भूस्थिर उपग्रह प्रक्षेपण यान), abbreviated in English as GSLV, is an expendable launch system operated by the Indian Space Research Organisation (ISRO).
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GS Gene Expression SystemÂ® Principles of the GS Gene Expression System™. Introduction to the GS System™. The Gold Standard for Mammalian Gene Expression. Lonza’s powerful proprietary GS Gene Expression System™ uses a robust viral promoter and selection via glutamine metabolism to provide rapid development of high-yielding and stable mammalian cell lines.
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Aprovocative Introduction. 1  Graph showing the increases in the concentration of methane in the atmosphere - as measured in ppbv (parts per billion by volume) - roughly parallel world population growth. As indicated above, over the last two centuries (i.e., since the industrial revolution), methane's concentration in the atmosphere has more than doubled.
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Lab 1: Solar Radiation & Seasons The solar constant is averaged across the entire surface of Earth; therefore, the value is divided by four. The 341.3 W m-2 value is the total solar radiation reaching the top of the atmosphere per second (174,226,942,644,300,000 W) divided by the surface area of Earth (510,000,000,000,000 m2).
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- Some measurements made at solar maximum showed that the sun was radiating less EUV light at that time and that Venus' ionosphere was lower, with the craft encountering electrons only 150 to 600 km above the planet. EUV represents an opportunity to further advance electronics and drive Moore's Law.
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- 2 Gonadosomatic index (GSI=(gonad weight/gutted weight)x100): this shows differences in development of the gonads with respect to gutted body weight; Spawning season, maturity sizes, and fecundity in blacktail comber (Serranus atricauda) (Serranidae) from the eastern-central Atlantic. All of the 18 pesticides and almost all of the 28 polychlorinated biphenyls (PCBs) that were analyzed in livers and gonads were detected in at least some of the tissue samples.
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- Latent heat of vaporization (Lv): Refers to the heat lost by the air when liquid water changes into vapor. This is also commonly known as the latent heat of evaporation. Lv= -2500 Joules per gram (J/g) of water or -600 calories per gram (cal/g) of water.
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Self-incompatibility Gametophytic self-incompatibility (GSI) In gametophytic self-incompatibility (GSI), the SI phenotype of the pollen is determined by its own gametophytic haploid genotype. This is the more common type of SI, existing in the families: Solanaceae, Rosaceae, and Papaveraceae.
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What does it do? The junction of the Great Saphenous Vein (GSV) and the deep vein it feeds into, the Common Femoral Vein (CFV), is very important in varicose vein surgery and is called the Sapheno-Femoral Junction (SFJ). Next page: What can go wrong with the Great Saphenous Vein (GSV).