نتایج جستجو برای: low ll satellite
تعداد نتایج: 1278865 فیلتر نتایج به سال:
1 Leaf life span (LL) and leaf mass per area (LMA) are fundamental traits in the carbon economy of plants, representing the investment required per unit leaf area (LMA) and the duration of the resulting benefit (LL). Species on dry and infertile soils converge towards higher LMA. It has been generally assumed that this allows species from low-resource habitats to achieve longer average leaf lif...
Satellite thermal control ensures safe operating temperature ranges for satellite components throughout the mission life. Effects of altitude, spin, and position of satellite radiator(s) on the thermal control of a small Low Earth Orbit (LEO) satellite have been studied. Results show that change in satellite altitude, in the range considered here, does not produce critical thermal conditions. H...
In this study oxidation of low-density lipoprotein (LDL) induced by different Cu2+ concentrations was investigated. Lipid peroxidation was assessed by monitoring low-level chemiluminescence (LL-CL), conjugated diene hydroperoxide (CD) and alpha-tocopherol (TocOH), the major lipophilic antioxidant in LDL. At high Cu2+ concentration, LDL oxidation was characterised by CD formation, LL-CL emission...
introduction: the aim of this study is to compare holmium laser (ll) with pneumatic lithoclast (pl) in patients with upper ureteral stones and their ability to destruct the stones and making the patient stone free. we also compare the duration of these procedures and their complications, such as urosepsis, perforation, and pushing the stone backward. methods: this has been a clinical randomized...
BACKGROUND The autonomic imbalance during acute ischemia is involved in the occurrence of life-threatening arrhythmias. OBJECTIVE To investigate the effect of autonomic nervous system (ANS) modulation by low-level carotid baroreceptor stimulation (LL-CBS) on ventricular ischemia arrhythmias. METHODS Anesthetized dogs were received either sham treatment (SHAM group, n = 10) or LL-CBS treatme...
A transition from constant light (LL) to constant darkness (DD) will reset the circadian rhythms of most organisms to a phase that normally occurs near dusk. We tested the circadian oscillator in the Aplysia eye for this property. The test was run in vitro under two conditions. Using the two eyes of a single animal, one eye was left attached to the cerebral ganglion by its intact optic nerve an...
New complexes and adducts of xanthate the general formula [M(cyclopentyl xant.)2] xant.)2.nL] Where M= Mn(ΙΙ) Fe(ΙΙ), Co(ΙΙ), Ni(ΙΙ), Cu(ΙΙ) Zn(ΙΙ), (cyclopentyl xant.)2=[Cyclopentyl ligand], n=2 L= Pyridine, 3-acetyl pyridine & Quinoline n=1, ethylenediamine, (1,10)-phenanthroline, prepared has been evaluated based on their magnetic, electrical, physical characteristics. And spectral metho...
BACKGROUND We hypothesize that left-sided low-level vagus nerve stimulation (LL-VNS) can suppress sympathetic outflow and reduce atrial tachyarrhythmias in ambulatory dogs. METHODS AND RESULTS We implanted a neurostimulator in 12 dogs to stimulate the left cervical vagus nerve and a radiotransmitter for continuous recording of left stellate ganglion nerve activity, vagal nerve activities, and...
The immunomodulatory cationic host defence peptide LL-37 plays an important role in epithelial innate immunity; at higher concentrations (20-50 microg mL(-1)) associated with inflammation, LL-37 elicits the production of cytokines and chemokines. It was demonstrated here that lower, physiologically relevant LL-37 concentrations (2-3 microg mL(-1)) altered epithelial cell responses to proinflamm...
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