نتایج جستجو برای: 50 mm
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Abstract We have demonstrated 50-nm enhancement-mode (E-mode) In0.7Ga0.3As PHEMTs with fmax in excess of 1 THz. The devices feature a Pt gate sinking process to effectively thin down the In0.52Al0.48As barrier layer, together with a two-step recess process. The fabricated device with Lg = 50-nm exhibits VT = 0.1 V, gm,max = 1.75 mS/μm, fT = 465 GHz and fmax = 1.06 THz at a moderate value of VDS...
We present 15 images from the global mmVLBI sessions in 1990 April at 100 GHz and 1993 April at 86 GHz. These observations probe the central engines of the 16 observed AGN’s with up to 50 μas resolution. Among other sources previously observed with λ3 mm VLBI we present the first λ3 mm maps of 0735+178, 0748+126, 1055+018, 2145+067, and CTA 102, in total we have been able to image 13 out of the...
Following the construction of two hybrid magnets, we intend to build up a third hybrid magnet which will produce about 30 T. A prereacted multifilamentary Nb Sn conductor will be employed for the 12 T superconducting part of the hybrid. As a first step for the project, we have designed, constructed and tested a magnet which consists of 14 double-pancakes made of a prereacted multifilamentary Nb...
c © 2009 by John von Neumann Institute for Computing Permission to make digital or hard copies of portions of this work for personal or classroom use is granted provided that the copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. To copy otherwise requires prior specific permission by the publisher ment...
c © 2007 by John von Neumann Institute for Computing Permission to make digital or hard copies of portions of this work for personal or classroom use is granted provided that the copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. To copy otherwise requires prior specific permission by the publisher ment...
Temporal arteritis, also known as giant cell arteritis (GCA), is a systemic vasculitis that predominantly involves the temporal arteries. It is a medical emergency and should be treated promptly as it can lead to permanent loss of vision. It is very commonly associated with a raised erythrocyte sedimentation rate (ESR), usually >50 mm/h, one of the essential criteria defined by the American Col...
A technique for tricuspid annuloplasty is presented, using a flexible 50 mm long band, where the annular circumference is reduced to a fixed value of 78.5 mm (circumference of #25 mm sizer). From June to February 2007, 15 consecutive patients with tricuspid regurgitation (TR) underwent tricuspid repair using this technique. The first suture is passed at the level of the anteroseptal commissure,...
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