نتایج جستجو برای: a387 gr91
تعداد نتایج: 16 فیلتر نتایج به سال:
Abstract. This paper presents a state-of-the-art anthropogenic emission inventory developed for the European domain an 18-year time series (2000–2017) at 0.05? × 0.1? grid resolution, specifically designed to support air quality modelling. The main pollutants are included: NOx, SO2, non-methane volatile organic compounds (NMVOCs), NH3, CO, PM10 and PM2.5, also CH4. To stay as close possible emi...
We study a particular VOA which is a subVOA of the E8-lattice VOA and determine its automorphism group. Some of this group may be seen within the group E8(C), but not all of it. The automorphism group turns out to be the 3-transposition group O(10, 2) of order 2357.17.31 and it contains the simple group Ω(10, 2) with index 2. We use a recent theory of Miyamoto to get involutory automorphisms as...
اتصال غیر همسان فولادهای فریتی کم آلیاژ به فولادهای زنگ نزن آستنیتی، در طی دهه های گذشته به صورت گسترده ای در صنایع به کار گرفته شده است. بنا به تجربه ها و تحقیقات سال های گذشته، این اتصال یکی از نقاطی است که درگیر مشکلات بسیاری بوده و بسیاری از خرابی ها در این منطقه اتفاق می افتد. به دلیل اهمیت صنعتی و اقتصادی این نوع اتصال، در تحقیق حاضر دو فولاد زنگ نزن آستنیتی a240-tp. 316 و فولاد کم آلیاژ ...
A procedure was developed that allows precise determination of Fe isotopic composition. Purification of Fe was achieved by ion chromatography on AG1-X8 strongly basic anion-exchange resin. No isotopic fractionation is associated with column chemistry within 0.02 per thousand /amu at 2sigma. The isotopic composition was measured with a Micromass IsoProbe multicollection inductively coupled plasm...
This paper first surveys the near-total lack of superlinear lower bounds in complexity theory, for “natural” computational problems with respect to many models of computation. We note that the dividing line between models where such bounds are known and those where none are known comes when the model allows non-local communication with memory at unit cost . We study a model that imposes a “fair...
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