نتایج جستجو برای: plants being annual

تعداد نتایج: 872768  

1998
C. R. Purvis

A new generation of small scale (less than 20 MWe) biomass fueled, power plants are being developed based on a gas turbine (Brayton cycle) prime mover. These power plants are expected to increase the efficiency and lower the cost of generating power from fuels such as wood. The new power plants are also expected to economically utilize annual plant growth materials (such as rice hulls, cotton g...

2006
M. L. Brooks K. H. Berry

Increased livestock densities near artificial watering sites create disturbance gradients called piospheres. We studied responses of alien and native annual plants and native perennial plants within 9 piospheres in the Mojave Desert of North America. Absolute and proportional cover of alien annual plants increased with proximity to watering sites, whereas cover and species richness of native an...

Journal: :Current Biology 2011
Roelof A. Hut

Seasonal changes in day length are used by plants and animals to synchronize annual rhythms in reproduction, physiology, and behavior to the environment. Increasing day length during spring causes sudden changes in the mammalian reproductive system once the critical photoperiod is reached. The molecular mechanism behind this switch is now quickly being elucidated.

K. Kant, S.K. Chakarvarti,

Background: In this study, measurement of indoor radon and its progeny levels was carried out in Gas Turbine Power Station in Haryana ( India ), where natural gas is used as fuel. For comparison, the results of a study carried out in thermal power plant in Haryana are also presented. Radon being a ubiquitous air pollutant has global impact and its monitoring in the environment at work places is...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2015
ykhlef laidani salah hanini ghania henini gerard mortha

this study was devoted to the development of pulp luffa cclindrica and its characterization paper (annual plant fiber of the family cucurbitaceae). baking at soda helps to achieve a high level of delignification (kappa ≤ 10) and high yield (≈ 67%).the beatability stack valley is comparable to refined wood fibers, the fibers develop a normally time with good hydrophilic properties without excess...

Journal: :Plant science : an international journal of experimental plant biology 2015
Aviad Freiman Sara Golobovitch Zeev Yablovitz Eduard Belausov Yardena Dahan Reut Peer Lior Avraham Zohar Freiman Dalia Evenor Moshe Reuveni Vladimir Sobolev Marvin Edelman Yosepha Shahak Alon Samach Moshe A Flaishman

Annual and perennial plants represent two different evolutionary strategies based on differential synchronization of their reproductive development. The mobile signal protein FLOWERING LOCUS T (FT) plays a central role in mediating the onset of reproduction in both plant types. Two novel FT-like genes from pear (Pyrus communis)-PcFT1 and PcFT2-were isolated, and their expression profiles were d...

Journal: :iranian journal of radiation research 0
k. kant dept. of physics, k l mehta dayanand college for women, faridabad, haryana, india-121 001 s.k. chakarvarti dept. of applied physics, n.i.t., kurukshetra, haryana, india -136 119

background: in this study, measurement of indoor radon and its progeny levels was carried out in gas turbine power station in haryana ( india ), where natural gas is used as fuel. for comparison, the results of a study carried out in thermal power plant in haryana are also presented. radon being a ubiquitous air pollutant has global impact and its monitoring in the environment at work places is...

2017
Xiuhua Zhang Hui Wang Renqing Wang Yutao Wang Jian Liu

The relationships between species richness and driving factors might vary with taxa and spatial scale. For this study we used plant species data of eight groups from nature reserves in China, namely pteridophytes, gymnosperms, angiosperms, vascular plants, Chinese endemic species, rare and endangered plants, woody plants, and herbaceous plants, and eight putative environmental predictors to exp...

2004
Jeffrey S. Fehmi Kevin J. Rice Emilio A. Laca

In California’s Mediterranean type grasslands, native perennial grasses such as Nassella pulchra are surrounded by introduced annual species and these annuals are thought to have displaced natives through much of their range. Amongst other invaders, two grasses Lolium multiflorum and Bromus hordeaceus, commonly dominate portions of the grassland with potential for N. pulchra restoration. We hyp...

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