نتایج جستجو برای: uniformity

تعداد نتایج: 14378  

2017
Gou Ogasawara Yusuke Inoue Keiji Matsunaga Kaoru Fujii Hirofumi Hata Yuki Takato

PURPOSE Image non-uniformity may cause substantial problems in magnetic resonance (MR) imaging especially when a 3-T scanner is used. We evaluated the effect of image non-uniformity correction in gadolinium ethoxybenzyl-diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced MR imaging using a 3-T scanner. METHODS Two commercially available methods for image non-uniformity correction, surf...

2005
Qiaolin Zhang Paul Friedberg Kameshwar Poolla Costas Spanos

CD-PEB temperature experiments show that post-exposure bake (PEB) temperature non-uniformity (both in steady-state and transient phases) impacts across-wafer CD uniformity [1]. Continued improvement in CD uniformity requires across-wafer temperature uniformity for the entire PEB cycle. This poses new challenges for the design of PEB thermal modules. This paper proposes a novel PEB thermal modul...

Journal: :Journal of pharmaceutical health care and sciences 2016
Kei Moriyama Yoichiro Takami Natsuki Uozumi Akiko Okuda Mayumi Yamashita Rie Yokomizo Kenichi Shimada Takashi Egawa Takehito Kamei Kazunobu Takayanagi

BACKGROUND Atropine sulfate is an anticholinergic agent for treatment of hypertrophic pyloric stenosis and is orally administrated as a triturate with lactose hydrate. Because of the low safety margin of atropine sulfate, triturate uniformity is a key safety factor. In this study, we assessed the uniformity of atropine sulfate in 1000-fold triturates prepared by wet mixing and dry mixing method...

2008

The uniformity requirements of direct-drive targets are <tringent. The requirements on both sphericity and wall thickness uniformity are of the order of less than 1%. In the past, dualbeam interference microscopy has been used at LLE to characterize the wall thickness and uniformity of transparent targets.' With this technique, an interference pattern is formed between one beam that passes thro...

Journal: :SIAM J. Comput. 2008
Pierre McKenzie Michael Thomas Heribert Vollmer

Imposing an extensional uniformity condition on a non-uniform circuit complexity class C means simply intersecting C with a uniform class L. By contrast, the usual intensional uniformity conditions require that a resource-bounded machine be able to exhibit the circuits in the circuit family defining C. We say that (C,L) has the Uniformity Duality Property if the extensionally uniform class C∩L ...

Introduction: Non-uniformity is one of the most important parameters affecting MRI images which can lead to harmful effects in the diagnosis and analysis of qualitative and quantitative methods. The present study introduced a method for measuring RF non-homogeneity in MRI systems. Methods and Materials: To verify the uniformity of B0 and B1 fields, a cylindrical phantom with a diameter of 24 c...

Journal: :IEICE Transactions 2012
Kunihiko Nagamine Satoshi Tomioka Tohru Tamura Yoshihide Shimpuku

We developed a quantitative evaluation method for luminance and color uniformity on a display screen. In this paper, we report the analysis result of a viewer perception of luminance and color uniformity. In experiments, observers subjectively evaluated Mura images which were showed on the light emitting diode (LED) backlight screen by adjusting the luminance of each LED. We measured the lumina...

2015
Hai-Ming Liu

To investigate the uniformity of copper particles in formulation design of copper-coated graphite, a quadrat-based method was presented with the image processing. Firstly, the particles were located by the foreground and background clustering algorithm. Then, an improved uniformity quantification model was established using the size and position of the particles. The findings based on the exper...

2002
Salvador Romaguera Michel Schellekens

For any weightable quasi-metric space (X, d) having a maximum with respect to the associated order ≤d, the notion of the quasi-metric of complexity convergence on the the function space (equivalently, the space of sequences) X, is introduced and studied.We observe that its induced quasi-uniformity is finer than the quasi-uniformity of pointwise convergence and weaker than the quasi-uniformity o...

2010
P. Fletcher W. Hunsaker W. Lindgren

This paper considers totally bounded quasi-uniformities and quasi-proximities for frames and shows that for a given quasi-proximity ⊳ on a frame L there is a totally bounded quasi-uniformity on L that is the coarsest quasi-uniformity, and the only totally bounded quasi-uniformity, that determines ⊳. The constructions due to B. Banaschewski and A. Pultr of the Cauchy spectrum ψL and the compacti...

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