نتایج جستجو برای: time dependent transpiration

تعداد نتایج: 2445034  

1999
K. S. Shivashankara C. K. Mathai

The relationship of leaf and fruit transpiration rates with the incidence of spongy tissue in mango cultivars Dashahari (free from spongy tissue) and Alphonso (susceptible to spongy tissue) was investigated. Leaf transpiration rates were similar in both the cultivars, however the fruit transpiration rates were significantly higher in cv. Dashahari. Artificially induced variations in fruit trans...

2002
Bryan R. Becker Brian A. Fricke

Transpiration is the process by which fresh fruits and vegetables lose moisture. This process includes the transport of moisture through the skin of the commodity, the evaporation of this moisture from the commodity surface and the convective mass transport of the moisture to the surroundings. This paper discusses the pertinent factors which affect transpiration and identifies mathematical mode...

2007
Hikaru Komatsu Ayumi Katayama Shigeki Hirose Atsushi Kume Naoko Higashi Shigeru Ogawa Kyoichi Otsuki

Many studies have reported tree growth reduction in forests with pedestrian trampling, implying a reduction of tree transpiration in such forests. We undertook observations of tree transpiration based on the heat-pulse method in a forest (Lithocarpus edulis) with pedestrian trampling. We prepared trampled and control plots in the forest. Tree transpiration in the trampled plot was reduced compa...

Journal: :Tree physiology 2004
Frederick C Meinzer Shelley A James Guillermo Goldstein

In large trees, the daily onset of transpiration causes water to be withdrawn from internal storage compartments, resulting in lags between changes in transpiration and sap flow at the base of the tree. We measured time courses of sap flow, hydraulic resistance, plant water potential and stomatal resistance in co-occurring tropical forest canopy trees with trunk diameters ranging from 0.34-0.98...

2015
X. Mao H. M. Blackburn S. J. Sherwin

This study is focused on twoand three-dimensional incompressible flow past a circular cylinder for Reynolds number Re 6 1000. To gain insight into the mechanisms underlying the suppression of unsteadiness for this flow we determine the nonlinear optimal open-loop control driven by surface-normal wall transpiration. The spanwise-constant wall transpiration is allowed to oscillate in time, althou...

Journal: :international journal of mathematical modelling and computations 0
v. kumar mishra b t kumaon institute of technology,dwarahat, almora,uttarakhand, india india computer science, assistant professor

in this paper, a production inventory model is developed for the business enterprise which consists of three wings. the first wing is for manufacturing new items, the second wing is for collecting the returned items, while third wing is for remanufacturing the returned item. in this model we consider the fact that the storage item is deteriorated during storage periods and salvage value is inco...

Journal: :iranian journal of public health 0
nurliyana juhan 1. institute of mathematical sciences, university of malaya, 50603 kuala lumpur , malaysia. nuradhiathy abd razak 2. institute of graduate studies, university of malaya, 50603 kuala lumpur , malaysia. yong zulina zubairi 3. centre for foundation studies in science, university of malaya, 50603 kuala lumpur , malaysia. muhammad naeem khattak 4. alberta health services, health protection communicable disease control , alberta, canada. nyi nyi naing 5. unit of biostatistics and research methodology, school of medical sciences, health campus, universitisains malaysia , kelantan, malaysia.

cervical cancer is the third most common cancer among women in malaysia. the objective of this study was to estimate the effect of explanatory variables on survival time of cervical cancer patients receiving treatment at a hospital in malaysia.in this retrospective record review study, cervical cancer data obtained from hospital universitisains malaysia (husm) was analysed. the data comprises o...

2017
Michael A. Forster

Transpiration is a significant component of the hydrologic cycle and its accurate quantification is critical for modelling, industry, and policy decisions. Sap flow sensors provide a low cost and practical method to measure transpiration. Various methods to measure sap flow are available and a popular family of methods is known as heat pulse velocity (HPV). Theory on thermal conductance and con...

2001
SALVADOR SÂNCHEZ-CARRILLO MIGUEL ÂLVAREZ-COBELAS MANUEL BENITEZ DAVID G. ANGELER

Estimates of transpiration are often needed for hydrological management in wetlands. A new and simple method, using a portable steady-state porometer, is presented for estimating transpiration in three aquatic emergent macrophytes (reed, cut-sedge, and cattail). The method was established on the basis of the relationships between transpiration, solar radiation, relative humidity and air tempera...

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