نتایج جستجو برای: duplex building

تعداد نتایج: 234224  

Journal: :Gastrointestinal Radiology 1987

Journal: :IEEE Transactions on Wireless Communications 2021

The study of optimal properties centralized dynamic-time-division-duplex (D-TDD) employed at a wireless network consisting multiple nodes is highly challenging and partially understood problem in the literature. In this paper, we develop an D-TDD scheme for comprised K full-duplex impaired by self-interference additive white Gaussian noise. As special case, also propose when part or all are hal...

Journal: :Nucleic acids research 2003
Ke Shi Baocheng Pan Muttaiya Sundaralingam

The crystal structure of an alternating RNA heptamer r(GUAUACA) has been determined to 2.0 A resolution and refined to an R(work) of 17.1% and R(free) of 18.5% using 2797 reflections. The heptamer crystallized in the space group C222 with a unit cell of a = 25.74, b = 106.58, c = 30.26 A and two independent strands in the asymmetric unit. Each heptamer forms a duplex with its symmetry-related s...

Journal: :Nucleic acids research 1998
B Holz S Klimasauskas S Serva E Weinhold

DNA base flipping, which was first observed for the C5-cytosine DNA methyltransferase M. Hha I, results in a complete removal of the stacking interactions between the target base and its neighbouring bases. We have investigated whether duplex oligodeoxynucleotides containing the fluorescent base analogue 2-aminopurine can be used to sense DNA base flipping. Using M. Hha I as a paradigm for a ba...

2017
William Copp Alexey Y. Denisov Jingwei Xie Anne M. Noronha Christopher Liczner Nozhat Safaee Christopher J. Wilds Kalle Gehring

Polyadenylate (poly(A)) has the ability to form a parallel duplex with Hoogsteen adenine:adenine base pairs at low pH or in the presence of ammonium ions. In order to evaluate the potential of this structural motif for nucleic acid-based nanodevices, we characterized the effects on duplex stability of substitutions of the ribose sugar with 2'-deoxyribose, 2'-O-methyl-ribose, 2'-deoxy-2'-fluoro-...

2005
A. H. Davies

Background—The purpose of this study was to assess the benefits of duplex compared with clinical vein graft surveillance in terms of amputation rates, quality of life, and healthcare costs in patients after femoropopliteal and femorocrural vein bypass grafts. Methods and Results—This was a multicenter, prospective, randomized, controlled trial. A total of 594 patients with a patent vein graft a...

2014
S. S. Panda M. Bajpai A. Singh Col K. Chand N. Sharma

Objective: Objective of this study was to review the management and outcome of 17 children with pelvi-ureteric junction obstruction (PUJO) in a duplex kidney. Materials and Methods: We analyzed our record from January 2000 to December 2011. A total of 258 pyeloplasty in a single system and 17 pyeloplasty in duplex system were performed during this period. Lower and upper pole moiety obstruction...

2010
Na-Ra Lee Hyun-Mi Kwon Kkothanahreum Park Sangtaek Oh Yong-Joo Jeong Dong-Eun Kim

SARS coronavirus encodes non-structural protein 13 (nsP13), a nucleic acid helicase/NTPase belonging to superfamily 1 helicase, which efficiently unwinds both partial-duplex RNA and DNA. In this study, unwinding of DNA substrates that had different duplex lengths and 5'-overhangs was examined under single-turnover reaction conditions in the presence of excess enzyme. The amount of DNA unwound d...

Journal: :Hypertension 1999
D A Leung U Hoffmann T Pfammatter T F Hany L Rainoni P Hilfiker E Schneider G G Zimmermann-Paul J F Debatin

Noninvasive testing for renovascular disease is required to identify patients who may benefit from revascularization procedures without exposing an unnecessary amount of patients to the risks of catheter angiography. All available methods of diagnosing renal artery stenosis have significant limitations. We compared a new technique, contrast-enhanced magnetic resonance angiography, with an estab...

2013
Yuan Zhou Elzbieta Kierzek Zi Ping Loo Meraldo Antonio Yin Hoe Yau York Wieo Chuah Susana Geifman-Shochat Ryszard Kierzek Gang Chen

Triplex is emerging as an important RNA tertiary structure motif, in which consecutive non-canonical base pairs form between a duplex and a third strand. RNA duplex region is also often functionally important site for protein binding. Thus, triplex-forming oligonucleotides (TFOs) may be developed to regulate various biological functions involving RNA, such as viral ribosomal frameshifting and r...

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