نتایج جستجو برای: iir

تعداد نتایج: 1637  

2016
Xue Han Weifeng Yao Zipeng Liu Haobo Li Zhong-jun Zhang Ziqing Hei Zhengyuan Xia

Oxidative stress plays a critical role in the pathogenesis of intestinal ischemia reperfusion (IIR) injury. Enhancement in endogenous Lipoxin A4 (LXA4), a potent antioxidant and mediator, is associated with attenuation of IIR. However, the effects of LXA4 on IIR injury and the potential mechanisms are unknown. In a rat IIR (ischemia 45 minutes and subsequent reperfusion 6 hours) model, IIR caus...

1998
Masahiro Okuda Masaaki Ikehara Shinichi Takahashi

Sinw ITR filhs 1~1w lowrr c.oltll)llt,~.tiorlnl ~WIIIldrxity t.han FIR filters. SOIIIP tlvsign mvflds for IIR fi1t.w banks have IWVII lwwvntrd in t 1~~ rvwnt. lit~rmturw Smith rt, al. hare lmqmd a class of liwar phase IIR fi1t.w hnks. Howm~~r t,llis m~tlml restricts tlw ortlrr of t,hr num*rator to hv odtl ant1 .morvovcr .has sonw drawhacks. 111 this palm WV lmsrnt two tlc4gn nwt~hotls for lirwa...

2011
Aloys N. Mvuma

in this paper, effect of a single narrow-band interference (NBI) on bit error rate (BER) performance for a binary phase shift keying (BPSK) synchronous direct-sequence code-division multiple access (DS CDMA) communication system operating in a frequency nonselective Rayleigh fading channel is analyzed. Second-order adaptive infinite impulse response (IIR) notch filters with plain gradient algor...

1997
Per Löwenborg Håkan Johansson Lars Wanhammar

This paper introduces a class of two-channel hybrid analog and IIR digital filter banks that approximates perfect magnitude reconstruction. It is an extension of a recently introduced class but that uses IIR instead of FIR synthesis filters. Using IIR filters the computational complexity can be reduced. This is demonstrated by means of an example. The filters are designed by making use of linea...

1999
Hiroyuki SAWADA Naoyuki AIKAWA Masamitsu SATO

The transfer function of IIR all-pass filters is a rational function of ω. However, the optimization of such a rational function using the successive projections method, which has a wider range of application than the Remez algorithm, has not been presented. In this paper, we propose designing IIR allpass filters using the successive projections method. key words: successive projections method,...

Journal: :American journal of physiology. Endocrinology and metabolism 2006
Shin-Da Lee Chun-Hsien Chu Erh-Jung Huang Min-Chi Lu Jer-Yuh Liu Chung-Jung Liu Hsi-Hsien Hsu James A Lin Wei-Wen Kuo Chih-Yang Huang

Although IGF-II activating the IGF-II receptor signaling pathway has been found to stimulate cardiomyocyte hypertrophy, the role of IGF-II in cardiac cell apoptosis remains unclear. This study aimed to identify the roles of IGF-II and/or IGF-II receptors (IGF-II/IIR) in cardiomyoblast apoptosis and in hypertensive rat hearts with abdominal aorta ligation. Cultured rat heart-derived H9c2 cardiom...

2008
Chanon Warisarn Piya Kovintavewat Pornchai Supnithi

In this paper, we propose a method of designing an infinite impulse response (IIR) equalizer used to shape the readback signal to a partial response target in longitudinal and perpendicular recording channels. Based on the minimum mean-squared error (MMSE), the coefficients of the IIR equalizer are explicitly derived. For both recording channels, the proposed IIR equalizer performs better than ...

2015
A. Garnier J. Pelon M. A. Vaughan D. M. Winker C. R. Trepte P. Dubuisson

Cirrus cloud absorption optical depths retrieved at 12.05 μm are compared to extinction optical depths retrieved at 0.532 μm from perfectly co-located observations of single-layered semi-transparent cirrus over ocean made by the Imaging Infrared Radiometer (IIR) and the Cloud and Aerosol Lidar with Orthogonal Polarization (CALIOP) flying on board the CALIPSO (Cloud-Aerosol Lidar and Infrared Pa...

Journal: :Development 2010
David Michaelson Dorota Z Korta Yossi Capua E Jane Albert Hubbard

Cell proliferation must be coordinated with cell fate specification during development, yet interactions among pathways that control these two critical aspects of development are not well understood. The coordination of cell fate specification and proliferation is particularly crucial during early germline development, when it impacts the establishment of stem/progenitor cell populations and ul...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه زابل - دانشکده کشاورزی 1393

چکیده ژن های ایمپرینت نقش خیلی مهمی در رشد، نمو و تکامل جنین دارند. به منظور بررسی چند شکلی ژن های igf-ii و igf-iir و ارتباط آن ها با وزن تولد در گاوهای سیستانی، از تعداد 80 رأس گاو نر و ماده سیستانی مرکز به گزینی گاو سیستانی وابسته به مرکز تحقیقات کشاورزی و منابع طبیعی شهرستان زهک به طور تصادفی خونگیری به عمل آمد. استخراج dna از خون کامل به روش فنل کلروفرم صورت گرفت و واکنش زنجیرهای پلی مراز...

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