نتایج جستجو برای: stem end splitting

تعداد نتایج: 703939  

2005
Jing Zhu Sumit Roy Jae Kim

In this paper, we focus on the performance of TCP enhancements for a hybrid terrestrialsatellite network. While a large body of literature exists regarding modeling TCP performance for the wired Internet, and recently over a single-hop wireless link, the literature is very sparse on TCP analysis over a hybrid wired-wireless (multi-hop) path. We seek to make a contribution to this problem (where...

Extended abstract Introduction and Objective: In order to increase the motivation of farmers to cultivate open pollinated oilseed rape cultivars, new cultivars with appropriate yields should be introduced. Also, due to the effects of climate change, increase in temperature, early arrival of heat and intensification of drought stress at the end of the season in the warm and dry regions, it is a...

Journal: :iranian journal of catalysis 0
shahab khameneh asl materials eng. department, mechanical eng. faculty, university of tabriz, tabriz, iran, p.o. box: 5166614766. deniz unar chemical eng. faculty, middle east university of technology, ankara, turkey.

titania nanotubes (tnt) prepared by anodization of ti foils were used for water splitting in a standalone cell. the concentration polarization between the anode side (1m naoh) and cathode side (0.5 m h2so4) ensured that the water splitting reaction could take place with no external bias and separate h2 and o2 evolution could be achieved. the destruction of tnt structures under 365 nm uv irradia...

2003
Sen M. Kuo D. W. Sun Woon-Seng Gan

− This paper presents the development of integrated near-end acoustic echo and noise reduction algorithm. The modified frequency-sampling filter (FSF) provides an effective filterbank for splitting signal into equally spaced frequency channels. The center clipper and attenuator are employed at each frequency bin for attenuating near-end acoustic echo and noise. The adaptive clipping threshold a...

شیخ حسن, محسن, طباطبایی قمی, رضا , قیاثی, مهدیه , کلهر, ناصر ,

Background and purpose: Mesenchymal stem cells (MSCs) are the most widely used cell sources for cartilage tissue engineering. In the present study, human stem cells were used as a cell source. Scaffolds play an important role in tissue engineering, therefore, this study aimed at evaluating the ability of fibrin scaffolds in chondrogenic differentiation of adipose-derived mesenchymal stem cells ...

Journal: :Physical chemistry chemical physics : PCCP 2013
Melanie Schnell Undine Erlekam P R Bunker Gert von Helden Jens-Uwe Grabow Gerard Meijer Ad van der Avoird

We report a combined theoretical and microwave spectroscopy study of the internal dynamics of the benzene dimer, a benchmark system for dispersion forces. Although the extensive ab initio calculations and experimental work on the equilibrium geometry of this dimer have converged to a tilted T-shaped structure, the rich internal dynamics due to low barriers for internal rotation have remained la...

Journal: :به نژادی نهال و بذر 0
پوریا همدانیان p. hamedanian university college of agriculture and natural resources, university of tehran, karaj, iranپردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج عبدالهادی حسین زاده a. hosseinzadeh university college of agriculture and natural resources, university of tehran, karaj, iranپردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج توحید نجفی میرک t. najafi mirak seed and plant improvement institute, karaj, iran، موسسه تحقیقات اصلاح و تهیه نهال و بذر، کرج امیرحسین نوربخش a. h. nourbakhsh seed and plant improvement institute, karaj, iranپردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

twenty-two bread wheat cultivars along with susceptible (sholeh) and resistant (azadi) control cultivars were evaluated for resistance to russian wheat aphid of two growth stages including seedling and stem elongation in greenhouse. five adult aphids per plant were used for infestation. leaf chlorosis at seedling and stem elongation stages and leaf rolling at seedling stage were measured. other...

Journal: :eLife 2015
Zijian Xu Wenjie Wang Kaiju Jiang Zhou Yu Huanwei Huang Fengchao Wang Bin Zhou Ting Chen

Long-term adult stem cells sustain tissue regeneration throughout the lifetime of an organism. They were hypothesized to originate from embryonic progenitor cells that acquire long-term self-renewal ability and multipotency at the end of organogenesis. The process through which this is achieved often remains unclear. Here, we discovered that long-term hair follicle stem cells arise from embryon...

Journal: :Physics Letters 2022

It is shown how choices based on the $q$-Racah polynomials for masses and spring constants along a chain give new systems that exactly allow dispersionless end-to-end transmission of pulse as well periodic splitting initial momentum between first last mass. This ``Newton's cradle'' provides classical analog quantum spin devices exhibit perfect state transfer fractional revival.

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