نتایج جستجو برای: control rod
تعداد نتایج: 1349926 فیلتر نتایج به سال:
PURPOSE To compare the patterns of local cone and rod system impairment in patients with progressive cone dystrophy (CD) using psychophysical and electrophysiological techniques. METHODS Local cone system function was assessed by measuring cone system thresholds (visual fields) and cone-mediated multifocal electroretinograms (mfERGs). Rod system function was assessed by measuring rod system t...
The foraging behavior of lacewing larvae (Chrysopa carnea Stephens, Chrysopidae, Neuroptera) on vertical lucite rods was observed under a variety of experimental conditions to investigate the decision processes responsible for the distribution of foraging effort. Food deprivation increased the duration of searching on all parts of the rod, whereas contact with prey at the rod tip induced only a...
BACKGROUND The rate of decline in forced expiratory volume in 1 second (FEV1) is representative of the natural history of COPD. Sparse information exists regarding the associations between the magnitude of annualised loss of FEV1 with other endpoints. METHODS Retrospective analysis of UPLIFT® trial (four-year, randomized, double-blind, placebo-controlled trial of tiotropium 18 μg daily in chr...
PURPOSE To determine whether alterations in rod cGMP-gated channel function mediate retinal degeneration, a transgenic approach in which the alpha subunit of the rod cGMP-gated channel is reduced by the expression of an antisense RNA was used. METHODS A 890-bp fragment of the 5' mouse rod cGMP-gated channel cDNA was cloned in the antisense orientation under the control of the strong bacterial...
A square splittered and unsplittered rod is placed in a turbulent boundary layer developed over a flat plate. The effect of the resulting disturbances on the local heat transfer coefficient is then studied. In both cases the square rod modifies the flow structure inside the boundary layer. As a result, a stagnation point, a jet and wake area are generated around the square rod, each making a co...
This report describes the current methods used by the Atomic Power Equipment Depart ment of the Genervl Electric Company for the analysis of superprompr critical nuclear excurions in lare war-rnsoderantd reactors The 7mchnical analysis tools used in studying hypothetical nuclear transients adescribed herein, without considering the probability of such an occurrence. The rod drop accident has be...
Nano HA rod was synthesized by precipitation method using Ca(NO3)24H2O and (NH4)2HPO4 as starting materials and ammonia solution as an agent for pH adjustment. The Ca/P molar ratio was maintained at 1.67. Then, the effect of different pH (4, 6, 8, 10, 11), different surfactants and different times for dialyses on nano HA rod were studied in this study. The samples were characterized by differen...
This numerical study aims to develop a coupled, passive and active control strategy of the flow around a cylinder of diameter D, and Re=4000. The strategy consists to put a cylindrical rod in front of a deforming cylinder. The quasielliptical deformation of cylinder follow a sinusoidal law in order to reduce the drag force. To analyze the evolution of unsteady vortices, the Large Eddy Simulatio...
OBJECTIVES To determine (1) reference values for cone and rod phototransduction variables derived from the a-wave of the electroretinogram, (2) their dependence on age, (3) the progression in cone and rod variables in patients with X-linked retinitis pigmentosa (XLRP), and (4) the test-retest variability in these a-wave measures compared with the variability in cone and rod b-wave measures. P...
x.doi.org/10.10 66//& 2016 E ent of Orthop York, NY. reprint reque opaedic Surg dway, Suite 8 mbia.edu The treatment of early-onset scoliosis (EOS) has evolved substantially over the years. Traditional growing-rod constructs rely on spine-based fixation for proximal and distal anchor sites. Hybrid growing-rod constructs pair rib-based proximal anchors with spinal or pelvic anchors distally. Bot...
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