نتایج جستجو برای: age of plant
تعداد نتایج: 21227076 فیلتر نتایج به سال:
Downslope soil movement along riverbanks is a significant erosion process. Plant roots, particularly of woody vegetation, apparently stabilize soil on slopes because in most areas where the vegetation is removed, frequent bank failure occurs. Plant roots increase soil-shearing resistance both directly by mechanical reinforcement and indirectly through removal of pore water by transpiration. In ...
Karl J. Niklas*, Jeremy J. Midgley and Richard H. Rand Department of Plant Biology, Cornell University, Ithaca, NY USA Department of Botany, University of Cape Town, Cape Town, South Africa Department of Theoretical and Applied Mechanics, Cornell University, Ithaca NY, USA *Correspondence: E-mail: [email protected] Abstract We show that explicit mathematical and biological relationships exist am...
This study was conducted to determine the effects of supplemented curcumin (CMN), derived from plant Curcuma longa, extract on performance and blood parameters of acetaminophen (ACT) induced quail hepatic injury. 240 quails from 0-37 days of age were used in a completely randomized design with 4 treatments of 4 replicates each and 15 chickens per replicate. All groups received 750 mg/kg body we...
Changes in the major chloroplast pigments of pigment-deficient genotypes of soybeans were studied as a function of leaf age and plant age. The trends of pigment development are plotted as a function of relative leaf age at two periods of plant development. Comparisons are made between aging leaves from different nodes and leaves of different ages from the same node. In addition, trends of pigme...
Contamination of soil with heavy metals has detrimental effects on ecosystems, because heavy metals accumulated in soil may persist and affect terrestrial ecosystems for a long time. Phytoremediation, as sustainable, low-cost and environmental friendly technology based on the direct use of plants for in situ remediation of contaminated soil, sludges, sediments, and ground water through contamin...
the main objectives of this paper are measuring the technical efficiency of iranian thermal power plants and investigating the determinants of technical efficiency levels in these plants. stochastic nonparametric envelopment data (stoned) method applied to plant-level data over a period of thirteen years from 1999 to 2011. this is the first comprehensive analysis (to our knowledge) of technical...
Downslope soil movement along riverbanks is a significant erosion process. Plant roots, particularly of woody vegetation, apparently stabilize soil on slopes because in most areas where the vegetation is removed, frequent bank failure occurs. Plant roots increase soil-shearing resistance both directly by mechanical reinforcement and indirectly through removal of pore water by transpiration. In ...
in order to study the genetic diversity as well as the relationships between seed yield and some morphological traits in common white bean, 500 accessions were evaluated in the experimental field of national plant gene bank of iran in 2004 in an augment design of three control varieties. traits were evaluated according to the instruction of ipgri. results of descriptive statistics indicated tha...
Age-related macular degeneration (AMD) is one of the most common eye diseases of elderly individuals. It has been suggested that lutein and zeaxanthin may reduce the risk for AMD. Information concerning the absorption of non-esterified or esterified zeaxanthin is rather scarce. Furthermore, the formation pathway of meso (3R,3'S)-zeaxanthin, which does not occur in plants but is found in the mac...
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