نتایج جستجو برای: relationship tree

تعداد نتایج: 715935  

Journal: :آب و خاک 0
کمال نبی الهی احمد حیدری روح الله تقی زاده مهرجردی

soil texture is an important soil physical property that governs most physical, chemical, biological, and hydrological processes in soils. detailed information on soil texture variability is crucial for proper crop and land management and environmental studies. therefore, at present research, 103 soil profiles were dogged and then sampled in order to prepare digital map of soil texture in bijar...

ABSTRACT: Quantitative structure-activity relationship (QSAR) study on the piperidone-grafted mono- and bis-spirooxindole-hexahydropyrrolizines as potent butyrylcholinestrase (BuChE) inhibitors were carried out using statistical methods, molecular dynamics and molecular docking simulation. QSAR methodologies, including classification and regression tree (CART), multiple linear regression (MLR),...

Thermal pasteurization is known as the most common method in food processing. In this study, the effectiveness of come up time on inactivation of heat resistance isoform of polyphenol oxidase (PPO), as a pasteurization index, was investigated during heating of the quince puree in a water bath at 60 to 90 . M5 decision tree, a novel statistical method, was applied to understand the simple relati...

1986
David J. Weir K. Vijay-Shanker Aravind K. Joshi

67 We examine the relationship between the two grammatical formalisms: Tree Adjoining Grammars and Head Grammars. We briefly investigate the weak equivalence of the two formalisms. We then turn to a discussion comparing the linguistic expressiveness of the two formalisms.

Journal: :Journal of genetics and genomics = Yi chuan xue bao 2012
Ling Xu Shi-Yi Chen Wen-Hui Nie Xue-Long Jiang Yong-Gang Yao

Tree shrew (Tupaia belangeri) is currently placed in Order Scandentia and has a wide distribution in Southeast Asia and Southwest China. Due to its unique characteristics, such as small body size, high brain-to-body mass ratio, short reproductive cycle and life span, and low-cost of maintenance, tree shrew has been proposed to be an alternative experimental animal to primates in biomedical rese...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ایلام 1388

the present study was an attempt to determine the types of motivation and levels of foreign language learning anxiety among efl students studying at azad and state universities in kermanshah and to determine the relationship between these two factors and language proficiency and gender. to this end, the foreign language learning motivation scale, by deci and ryan )1985(, were administered to 12...

Journal: :iranian red crescent medical journal 0
mehdi birjandi department of biostatistics, school of medicine, shiraz university of medical sciences, shiraz, ir iran seyyed mohammad taghi ayatollahi department of biostatistics, school of medicine, shiraz university of medical sciences, shiraz, ir iran; department of biostatistics, school of medicine, shiraz university of medical sciences, shiraz, ir iran. tel: +98-7132349330, fax: +98-7132349330 saeedeh pourahmad department of biostatistics, school of medicine, shiraz university of medical sciences, shiraz, ir iran ali reza safarpour gastroenterohepatology research center, shiraz university of medical sciences, shiraz, ir iran

background non-alcoholic fatty liver disease (nafld) is the most common form of liver disease in many parts of the world. objectives the aim of the present study was to identify the most important factors influencing nafld using a classification tree (ct) to predict the probability of nafld. patients and methods this cross-sectional study was conducted in kavar, a town in the south of fars prov...

2016
Xixi Wang Wenxing Long Brandon S. Schamp Xiaobo Yang Yong Kang Zhixu Xie Menghui Xiong

Vascular epiphytes are important components of biological diversity in tropical forests. We measured the species richness and abundance of vascular epiphytes along four vertical crown zones and five horizontal orientations on 376 trees, as well as the diameter at breast height (DBH) of host trees in tropical cloud forests in Bawangling, Hainan, China. The relationship between vascular epiphyte ...

2000
Gregory A. Reams Paul C. Van Deusen

Tree-ring data can extend back in time for thousands of years allowing researchers to reconstruct certain environmental factors that have left an imprint or signal in the tree-ring record. Typically, these factors include reconstructions of annual precipitation or temperature for months or seasons to which a particular tree species is sensitive. Over the last several decades, scientists have us...

2015
Catherine M Hulshof Nathan G Swenson Michael D Weiser

The relationship between tree height and diameter is fundamental in determining community and ecosystem structure as well as estimates of biomass and carbon storage. Yet our understanding of how tree allometry relates to climate and whole organismal function is limited. We used the Forest Inventory and Analysis National Program database to determine height-diameter allometries of 2,976,937 indi...

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