نتایج جستجو برای: based tfr methods
تعداد نتایج: 4266827 فیلتر نتایج به سال:
all analytical methods are generally based on the measurement of a parameter or parameters which are somehow related to the concentration of the species.an ideal analytical method is one in which the concentration of a species can be measured to a high degree precision and accuracy and with a high sensitivity. unfortunately finding such a method is very difficult or sometimes even impossible.in...
BACKGROUND Although chronic rhinosinusitis (CRS) is increasing in prevalence and incidence, its diagnosis and treatment still pose a challenge. The Task Force on rhinosinusitis (TFR) advocates the use of symptom based criteria. However, many otorhinolaryngologists depend on diagnostic nasal endoscopy and computed tomography (CT) of paranasal sinuses for diagnosis of CRS. Computed tomography has...
OBJECTIVE This report analyzes the patterns of childlessness, and conversely, the first-birth patterns of three birth cohorts of American women. For this report, a cohort refers to women born in the same year. The cohorts compared were women born in 1910, 1935, and 1960-who, consequently, turned 25 during the Great Depression, the Baby Boom, and lastly, the post-Baby Boom period. The purpose of...
Many flavonoids have cardioprotection against myocardial ischemia/reperfusion (I/R) injury. Total flavones from Rhododendron simsii Planch flower (TFR) can protect myocardial ischemic injuries. However, its protective mechanism is still unknown. The present study was designed to investigate the mechanism of TFR on myocardial I/R and anoxia/reoxygenation (A/R) injuries. Rat model of myocardial I...
This paper proposes a decision support model to determine the contribution of urban region in the National Target Total Fertility Rate using analytical hierarchical Process (AHP). The proposed model supports in regional sustainability developing regarding family planning programs by determining and reducing the contribution of each governorate in Urban region of TFR and its fertility rate takin...
T-follicular helper (Tfh) cells differentiate through a multistep process, culminating in germinal center (GC) localized GC-Tfh cells that provide support to GC-B cells. T-follicular regulatory (Tfr) cells have critical roles in the control of Tfh cells and GC formation. Although Tfh-cell differentiation is inhibited by IL-2, regulatory T (Treg) cell differentiation and survival depend on it. H...
This paper deals with a new modulation recognition algorithm based on an analysis of time-frequency representations of di erent modulated signals (PSK, QAM and FSK). At rst, we conduct experimental studies over a range of time-frequency representations (TFR) in order to choose the more appropriated one. Once, an appropriated TFR has been chosen, some statistical functions applied on that TFR ar...
We evaluated the use of transferrin receptor (TfR) in serum as an index of iron deficiency in 19 patients diagnosed as having iron-deficiency anemia, in 17 patients with anemia of chronic disease, and in a control group of 19 nonanemic patients who underwent elective ocular or nasopharyngeal surgery. The assessment of iron status of the anemic patients was based on the presence of stainable iro...
In this letter, we propose a novel low-temperature nitridation technology on a tantalum nitride (TaN) thin film resistor (TFR) through supercritical carbon dioxide (SCCO2) treatment for temperature sensor applications. We also found that the sensitivity of temperature of the TaN TFR was improved about 10.2 %, which can be demonstrated from measurement of temperature coefficient of resistance (T...
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