نتایج جستجو برای: is 1530 m3s
تعداد نتایج: 7237944 فیلتر نتایج به سال:
A consecutive sample of 5,000 families of Armed Forces personnel was analysed to study the prevalence of consanguineous marriage and its effect on the prevalence of hereditary gross (physical) malformations. The overall frequency of inbreeding was 76% with a coefficient of 0.04151 which is probably the highest figure reported in literature. The overall prevalence of congenital malformations in ...
در این تحقیق، چگونگی وقوع گسیختگی (در اثر رشد ترک) در یک قطعه اتصال مربوط به بال مرکزی یک هواپیمای تجاری مورد نظر قرار گرفته و علت شکست توسط آزمونهای مختلف مکانیکی، متالورژیکی و فراکتوگرافی، بررسی گردیده است. سپس فرآیندی بر مبنای سند استاندارد MIL-1530 ویرایش C تدوین و بر اساس آن بازمهندسی قطعه و طراحی مجدد آن به منظور افزایش کارایی قطعه انجام شد. نتایج این تحقیق نشان میدهد که اساساً بازمهندس...
The vibrational temperatures of product CO(2) were measured in CO oxidation on Pd(111) as a function of the desorption angle by means of infrared chemiluminescence. The antisymmetric vibration temperature was separately determined from the other vibrational modes from the normalized chemiluminescence intensity. The product CO(2) desorption is sharply collimated along the surface normal. The ant...
We demonstrate a simple and efficient optical coupler for vertical coupling between optical fibers and InP-based waveguides using a slant-etched mirror. The angle of the etched mirror can be controlled by using an aluminum jig with a beveled surface inserted under the substrate during RIE (reactive ion etching) of InP/InGaAsP. The offchip coupler is fabricated simultaneously with a high-mesa wa...
Dark solitons, which have better stability in the presence of noise, have potential applications in optical communication and ultrafast optics. In this paper, the dark soliton formation in erbium-doped fiber lasers based Sb(2)Te(3) saturable absorber (SA) is first experimentally demonstrated. The Sb(2)Te(3) SA is fabricated by using the pulsed laser deposition method. The generated dark soliton...
The relationship between brain volume and intelligence has been a topic of a scientific debate since at least the 1830s. To address the debate, a meta-analysis of the relationship between in vivo brain volume and intelligence was conducted. Based on 37 samples across 1530 people, the population correlation was estimated at 0.33. The correlation is higher for females than males. It is also highe...
Ammonia is one of the most significant environmental pollutants. Concentration measurements, identifying sources and studying transformations in biosphere are essential, they focus many investigations. The near-infrared (≈1530 nm) photoacoustic method for simultaneous selective determination 14NH3/15NH3 isotopologues reported here can be suitable monitoring these phenomena processes. So far, ha...
feminine voice and narratology in wuthering heights wuthering heights as a general "bronte" work has extraordinary dimensions to it which can make it focal to different ways of interpretation. among other differences the issue of narrative voice is essential in understanding the ultimate purpose of wuthering heights. emily bronte uses different narrators from various focal points speaking of m...
We have given designs of a small dispersion fiber with large effective area and small dispersion slope. The fiber has flat modal field over the central part of the core, which provides large mode field diameter (8.3 um at Λ0 = 1550 nm) leading to the relatively large effective area (Aeff = 56.1 um ) required to reduce nonlinear effects. The total dispersion of the proposed fiber is in the range...
Recent evidence for pentaquark baryons is critically reviewed in the light of new high statistics data. The search of the WA89 experiment for the Ξ(1860) is presented in detail and consequences of its non-observations are discussed. 1 The Myth of Sisyphus Giving these days a talk on pentaquarks or even worse writing afterwards a report for the proceedings reminds very much on Sisyphus, a man et...
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