نتایج جستجو برای: wlr
تعداد نتایج: 94 فیلتر نتایج به سال:
Current densities ranging from 440 to 543 kA/cm were applied to InGaP HBTs in WLR tests. Even with such a high current stress at 440 kA/cm and an estimated junction temperature of 396 °C, the transistor lasted for 101 hours before our failure criterion was met. The current gain degradation behavior was similar to that shown in traditional, low current reliability tests, namely a long, relativel...
BACKGROUND AND AIM Baroreceptor activation therapy (BAT) leads to a decrease in blood pressure (BP) in patients affected by resistant hypertension (RH) by reducing sympathetic outflow. This study aimed at evaluating the effects of BAT on RH patients' retinal arteriolar microvasculature, a territory devoid of adrenergic innervation. PATIENTS AND METHODS Five patients defined as affected by RH ...
Supernova (SN) cosmology is based on the assumption that width-luminosity relation (WLR) and color-luminosity (CLR) in type Ia SN luminosity standardization would not show {absolute magnitude differences} with progenitor age. Unlike this expectation, recent age datings of stellar populations host galaxies have shown significant correlations between Hubble residual (HR). Here we correlation orig...
Tropical areas have a large distribution of saline soils and tidal flats with high salinity level. Salinity stress is key factor limiting the widespread use tropical forage such as Stylosanthes guianensis (Aubl.) Sw. This study was designed to screen tolerance 84 S. accessions; In greenhouse experiment, plants were subjected Hoagland solution or 200 mM NaCl for up 15 days. tolerant accession CI...
Lacrimal duct obstruction disease (LDOD) is a common ophthalmologic disease. Stent implantation surgery is one of the most effective therapies. In this study, we intended to find out the satisfactory biodegradable stents containing poly-L-lactic acid-polycaprolactone-polyethylene glycol (PLLA- PCL- PEG) complexes for therapeutic application in LDOD. Stents made of PLLA- PCL- PEG complexes in va...
Industry 4.0, a term invented by Wolfgang Wahlster in Germany, is celebrating its 10th anniversary 2021. Still, the digitalization of production environment one hottest topics computer science departments at universities and companies. Optimization processes or redefinition concepts meaningful light current industrial research agendas. Both mentioned optimization are considered numerous subtopi...
Abstract Background African wild lettuce ( Lactuca taraxacifolia Willd.) is an underutilised indigenous leafy vegetable containing essential nutrients and medicinal properties. Hence, this study aimed to determine the chemical composition, antioxidant activities, α-amylase, α-glucosidase angiotensin converting enzyme inhibitory potentials of leaves powder samples. Methods Freshly harvested Wild...
Salicylic acid (SA) inhibited germination of cocklebur (Xanthium pennsylvanicum Wlr), lower seeds, which are completely after-ripened and nondormant. SA also inhibited ethylene production during a pre-germination period of the seeds. Exogenous ethylene overcame the inhibtion of the seed germination by SA. Moreover, SA reduced respiration in pre-germinating whole seeds as well as excised axial...
Context. Massive stars play a dominant role in the Universe, but one of the main drivers for their evolution, their mass loss, remains poorly understood. Aims. In this study, we test the theoretically predicted mass-loss behaviour as a function of stellar effective temperature across the so-called ‘bi-stability’ jump. Methods. We observe OB supergiants in the spectral range O8-B3 at radio wavel...
An experiment was performed to evaluate the effects of dietary metabolizable energy (ME) and lysine on carcass characteristics and meat quality in Arbor Acres (AA) broilers from 1 to 56 days of age. A total of 2,970 1-d-old male broiler chicks were randomly allocated to nine dietary treatments (three ME levels in combination with three lysine levels), and dietary ME and lysine concentrations we...
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