نتایج جستجو برای: 4t

تعداد نتایج: 808  

Journal: :J. Comb. Theory, Ser. A 1972
Vasanti N. Bhat

Some techniques are developed for constructing non-isomorphic solutions of symmetric (4t + 3,2t + 1, t) designs for suitable values of t and for (4t + 2, 8t + 2,4t + 1,2t + 1,2t) and (4t + 4, St + 6,4t + 3,2t + 2,2t + 1) designs. As an application, some non-isomorphic solutions of (19,9,4), (10,18, 9, 5, 4), and (12, 22, 11, 6, 5) designs are obtained. In [l] some other techniques were given fo...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2007
Zhi-Yong Yang Hui-Min Zhang Cun-Ji Yan Shan-Shan Li Hui-Juan Yan Wei-Guo Song Li-Jun Wan

Two alkyl-substituted dual oligothiophenes, quarterthiophene (4T)-trimethylene (tm)-octithiophene (8T) and 4T-tm-4T, were used to fabricate molecular structures on highly oriented pyrolytic graphite and Au(111) surfaces. The resulted structures were investigated by scanning tunneling microscopy. The 4T-tm-8T and 4T-tm-4T molecules self-organize into long-range ordered structures with linear and...

Journal: :Magnetic resonance in medicine 2001
J T Vaughan M Garwood C M Collins W Liu L DelaBarre G Adriany P Andersen H Merkle R Goebel M B Smith K Ugurbil

Signal-to-noise ratio (SNR), RF field (B(1)), and RF power requirement for human head imaging were examined at 7T and 4T magnetic field strengths. The variation in B(1) magnitude was nearly twofold higher at 7T than at 4T ( approximately 42% compared to approximately 23%). The power required for a 90 degrees pulse in the center of the head at 7T was approximately twice that at 4T. The SNR avera...

2002
Philo Juang Stefanos Kaxiras Kevin Skadron Zhigang Hu Douglas W. Clark

This paper proposes the use of four-transistor (4T) cache and branch predictor array cell designs to address increasing worries regarding leakage power dissipation. While 4T designs lose state when infrequently accessed, they have very low leakage, smaller area, and no capacitive loads to switch. This short paper gives an overview of 4T implementation issues and a preliminary evaluation of leak...

2016
Yazan Samhouri Mohammad Telfah Ruth Kouides Timothy Woodlock

BACKGROUND Thrombocytopenia is common in hospitalized patients. Heparin-induced thrombocytopenia (HIT) is a life-threatening condition which can lead to extensive thrombosis. Diagnosis of HIT relies on clinical suspicion determined by 4T score and immunoassays through testing for anti-PF4/heparin antibodies. Clinical practice guidelines published by the American Society of Hematology in 2013 re...

Journal: :Magnetic resonance in medicine 2009
Ivan Tkác Gülin Oz Gregor Adriany Kamil Uğurbil Rolf Gruetter

A comprehensive comparative study of metabolite quantification from the human brain was performed on the same 10 subjects at 4T and 7T using MR scanners with identical consoles, the same type of RF coils, and identical pulse sequences and data analysis. Signal-to-noise ratio (SNR) was increased by a factor of 2 at 7T relative to 4T in a volume of interest selected in the occipital cortex using ...

2004
Peng Du Gary William Grewal Shawki Areibi Dilip K. Banerji

! " $#$ &%' (%$)* ,+-%. 0/1 2 &% 354768 9 :+-/ 4&; <%' = <%$4 >3? &%$@ A 5 40 ' BC = *% 354, D $ 2 EF $ %' #$ G68H.2I !#C%. .;J K 4 L*M1 & N (% 3G 5 >EO3G 28 '2I (%. @C P%$ B$%$ &%$#$ $E 9 :+-/ 4 QN * 40 *%$ R , 5 4 4 IM .BC S * %$ 1 * 5 4T 41 *%' 14 # >UV <%' W >3A < X %' W Y 'E * 5 &%' [3 %$ W 4 L $ V%' GM1 > N\"]_^ `$a8Q * -U* 4T %' #$ $ > * b 4 %' ! * *%$ 1 ...

2002
Zhigang Hu Stefanos Kaxiras Kevin Skadron Margaret Martonosi Douglas W. Clark

Much of on-chip storage is devoted to transient, often short-lived, data. Despite this, virtually all on-chip array structures use sixtransistor (6T) static RAM cells that store data indefinitely. In this paper we propose the use of quasi-static four-transistor (4T) RAM cells. Quasi-static 4T cells provide both energy and area savings. These cells have no connection to Vdd thus inherently provi...

Journal: :Applied and environmental microbiology 1994
D Faure M L Bouillant R Bally

Azospirillum lipoferum 4T has original properties such as nonmotility, melanin synthesis, and laccase activity. Following random Tn5 mutagenesis in A. lipoferum 4T, we obtained 10 mutants which were affected in melanization and laccase activity. The class 1 mutants, with intermediate levels of laccase activity, showed some coloration; the class 2 mutants, which were completely negative for lacc...

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