نتایج جستجو برای: vhf circuit
تعداد نتایج: 118032 فیلتر نتایج به سال:
Vegetative hyphal fusion (VHF) is a ubiquitous phenomenon in filamentous fungi whose biological role is poorly understood. In Neurospora crassa, the mitogen-activated protein kinase (MAPK) Mak-2 and the WW domain protein So are required for efficient VHF. A MAPK orthologous to Mak-2, Fmk1, was previously shown to be essential for root penetration and pathogenicity of the vascular wilt fungus Fu...
Lewis acid enhanced switching of the 1,1-dicyanodihydroazulene/vinylheptafulvene photo/thermoswitch.
Mild Lewis acids enhance the rate of the thermal conversion of vinylheptafulvene (VHF) to dihydroazulene (DHA). In the absence of light, stronger Lewis acids promote the otherwise photoinduced DHA to VHF conversion.
We report simultaneous meteor echo observations using the Arecibo 430MHz and 46.8-MHz radars. Using identical data-taking and meteor selection criteria, 1868 and 367 meteors were found in the 430-MHz and 46.8-MHz beams, respectively, while 145 were found in both beams during the 7 hours of observation. Of the 367 VHF echoes, there were only 10 trail echoes, while the rest were head echoes, whic...
Background. Viral hemorrhagic fevers (VHF) are a group of systemic diseases characterized by fever and bleeding, which have posed a formidable potential threat to public health with high morbidity and mortality. Traditional Chinese Medicine (TCM) formulas have been acknowledged with striking effects in treatment of hemorrhagic fever syndromes in China's history. Nevertheless, their accurate mec...
Elektrische Signalmessungen brauchen freilich eine semantisch-symbolische Interpretation – typischerweise als Binärzahlen, wenngleich die Nutzung einer Leitung mit mehreren Signalvarianten durchaus üblich ist. Letztere wird freilich vor den Nutzern verborgen. Computern und Netze werden deshalb als Behälter von Nullen und Einsen dargestellt, die Binärzahlen speichern, übertragen und verarbeiten....
Durch zunehmende kundenspezifische Individualisierung von Produkten und kleiner werdenden Losgröße steigt die Komplexität von Prozessen in der Endmontage immer weiter an. Wir stellen daher ein adaptives und gamifiziertes Werkerassistenzsystem vor, das die spezifischen Eigenschaften und Bedürfnisse der Mitarbeiter beachtet, um so die gestiegene Komplexität wieder beherrschbarer zu machen. Neben ...
This paper presents the design of an on-chip charge pump phase-locked loop (CP-PLL) with a fully digital defect-oriented built-in self-test (BIST) for very-high frequency (VHF) applications. The synthesizer has 40–100 MHz tuning range and uses ring voltage-controlled oscillator synthesis. PLL exhibits phase noise −132 dBc/Hz at 1 consumes 1.8 mW on 3 V supply. BIST implementation fewer external...
For several years the grading software developed at the Hanover University of Applied Sciences and Arts has increased the quality of various university courses. Increased quality had been confirmed by several evaluations. In this paper, we present improvements to the software that have been achieved in the past two years. We take a look at all software layers involved: the frontend "Moodle" wit...
BACKGROUND Viral hemorrhagic fevers (VHF) are acute diseases associated with bleeding, organ failure, and shock. VHF may hardly be distinguished clinically from other diseases in the African hospital, including viral hepatitis. This study was conducted to determine if VHF and viral hepatitis contribute to hospital morbidity in the Central and Northern parts of Ghana. METHODOLOGY/PRINCIPAL FIN...
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