منابع مشابه
Transpiration and Physico-chemical Properties of Leaves as Related to Drought Resistance in Loblolly Pine and Shortleaf Pine.
In the reforestation program now being carried on by various state and federal agencies, many millions of tree seedlings are planted each year. An extremely large number of these planted seedlings are killed within the first year or two after planting. One of the major causes of the fatalities is the inability of seedlings to resist drought. If the properties involved in drought resistance of s...
متن کاملRemoval of Cadmium from Aqueous Solutions Using Excised Leaves of Quetta Pine (pinus Halepensis Mill.)
Removal of cadmium from aqueous solution was studied by using Quetta pine (Pinus halepensis Mill.) leaves. Batch adsorption experiments were performed as a function of appropriate equilibrium time, pH, concentration of adsorbate and amount of adsorbent. The optimum pH required for maximum adsorption was found to be 7.0 and the maximum contact time for the equilibrium was 30 minutes at adsorbent...
متن کاملHydraulic design of pine needles: one-dimensional optimization for single-vein leaves.
Single-vein leaves have the simplest hydraulic design possible, yet even this linear water delivery system can be modulated to improve physiological performance. We determined the optimal distribution of transport capacity that minimizes pressure drop per given investment in xylem permeability along the needle for a given length without a change in total water delivery, or maximizes needle leng...
متن کاملEfficacy of pine leaves as an alternative bedding material for broiler chicks during summer season
AIM The aim was to assess the efficacy of pine leaves as an alternative bedding material on the performance of broiler chicks. MATERIALS AND METHODS The present study was conducted in summer. Total 120, day old Vencobb straight run chicks were procured, and after 5 days of brooding, chicks were randomly distributed into four treatment groups viz. paddy husk (Group I), paddy straw (Group II), ...
متن کاملNumerical Investigation of Natural Convection of Pine, Olive, and Orange Leaves
Abstract—Heat transfer of leaves is a crucial factor in optimal operation of metabolic functions in plants. In order to quantify this phenomenon in different leaves and investigate the influence of leaf shape on heat transfer, natural convection for pine, orange and olive leaves was simulated as representatives of different groups of leaf shapes. CFD techniques were used in this simulation with...
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ژورنال
عنوان ژورنال: Botanical Gazette
سال: 1910
ISSN: 0006-8071
DOI: 10.1086/330374