نتایج جستجو برای: 200 cm
تعداد نتایج: 276544 فیلتر نتایج به سال:
An inorganic proton exchange membrane based on sintered mesoporous silica and phosphoric acid was developed with a high proton conductivity of 0.06 S cm(-1) at 200 °C, achieving an excellent power output of 689 mW cm(-2) in H2 at 190 °C and 200 mW cm(-2) in methanol at 200 °C with no external humidification.
Weak Line Water Vapor Spectra in the Region 13 200–15 000 cm−1 Roland Schermaul,∗ Richard C. M. Learner,∗,1 A. A. D. Canas,† J. W. Brault,† Oleg L. Polyansky,‡,2 Djedjiga Belmiloud,‡ Nikolai F. Zobov,‡,2 and Jonathan Tennyson,‡,3 ∗Laser Optics & Spectroscopy, Blackett Laboratory, Imperial College of Science, Technology and Medicine, Prince Consort Road, London SW7 2BW, United Kingdom; †LASP (Sp...
The 2D transverse electric (TE) Maxwell equations have been solved by a Finite Volume method. The reconstruction of quantities on the cell interfaces is taken as an average of the values in the two neighbouring cells. We use an explicit three step Runge-Kutta method for the time-stepping. This method is well suited for a SIMD machine because of the locality of references. We run our code on a 1...
این تحقیق سنتز کمپلکس های معدنی جدید، شناسایی و مطالعه رفتار الکتروشیمی آن ها و تهیه نانو ذرات اکسیدی می باشد، کمپلکس های: [[(opd)2cd(µ-scn)2]2ba(phen)2].cl2-1 [[(opd)3ba(µ-cn)2]2cd(cn)2] -2 [(dipic)cd(µ-dipic)ba(opd)2(h2o)] -3 [(dipic)cd(µ-dipic)ba(bpy)2(h2o)2] -4 سنتز شدند و توسط تکنیک های ft-ir،1h-nmr ،uv-vis ، آنالیز عنصری و هدایت سنجی شناسایی و مطالعه الکتروشیمی کمپلکس ها با است...
Abstract Introduction There is little data on the effect of One Anastomosis Gastric Bypass (OAGB) Haematinics, Vitamins D, and Parathyroid Hormone levels. It further unclear if an OAGB with a Bilio-Pancreatic Limb (BPL) 150 cm (OAGB-150) would deliver better outcomes than that BPL 200 (OAGB-200). Methods We investigated our records to obtain information patients who underwent OAGB-200 or OAGB-1...
—The New Zealand mud snail (NZMS), Potamopyrgus antipodarum (Gray), is an invasive species of aquatic snail that is becoming widespread in inland and coastal waters of the western United States. The New Zealand mud snail can have significant impacts on stream ecosystems, as they may consume a large fraction of available algae production and compete with and displace native invertebrates. Even t...
The Romberg test generally shows that postural stability is better with eyes open than eyes closed; the Romberg quotient (RQ) is generally 2.5. This study examines the possible role of vergence angle on the RQ. Eighteen young (25.3+/-2.7 years) and 17 old (61.6+/-4.4 years) subjects were required to fixate a target at 40 cm or at 200 cm inducing different vergence angle (i.e. 8.6 degrees and 1....
This paper presents an investigation into the degree and nature of chemicalweathering during soil formation on a volcanic (phonolite) substrate on the southern slopes of Mt. Kilimanjaro in northern Tanzania. The high field strength elements Nb and Ta were used to estimate enrichments and depletions relative to the bedrock. The degree ofweatheringwas found to increasewith depth in the soil profi...
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