نتایج جستجو برای: size specific
تعداد نتایج: 1539397 فیلتر نتایج به سال:
An effect size (ES) provides valuable information regarding the magnitude of effects, with interpretation being most important. Interpreting ES requires combining from numerical value and context research. However, many researchers adopt popular benchmarks such as those proposed by Cohen. More recently, have interpreting relative to distribution observed ESs in a specific field, creating unique...
learning a second or foreign language requires the manipulation of four main skills, namely, listening, reading, speaking, and writing which lead to effective communication. it is obvious that vocabulary is an indispensible part of any communication, so without a vocabulary, no meaningful communication can take place and meaningful communication relies heavily on vocabulary. one fundamental fac...
aluminum sulfate nano structures have been prepared by solution combustion synthesis using aluminum nitrate nonahydrate (al(no3)3.9h2o) and ammonium sulfate ((nh4)2so4). the resultant aluminum sulfate nano structures were calcined at different temperatures to study thermal decomposition of aluminum sulfate. the crystallinity and phase of the as-synthesized and calcined samples were characteri...
saffron (zaaferan), botanical name crocus sativus, is the most expensive spice in the world. it is derived from the dried stigma and pistil of the purple saffron crocus flowers. iran is the largest saffron producer accounting for more than 80% of the world's production. saffron contains an aeroallergen that causes reactive respiratory allergic reactions in atopic subjects. igg antibody to aller...
one of the most visible aspects of a forest stand structure is the spatial patterns of trees. competition affects on forest structure and its understanding is important, when the purpose of forest management is to imitate the dynamic of natural ecosystems. for this purpose, an unmanaged intact forest was selected with 26 hectares area. all chestnut leaf oak (quercus castaneifolia) trees with a ...
Morphology and crystal size of zeolites have an important role for their specific use in industries. Many parameters are found to be highly important in the physical appearance of the final zeolite products. In this work, some of the most effective parameters influencing the crystal size and morphology of zeolite A such as temperature and aging time of the gel preparation, crystallization...
This paper discussed the scheduling problem of outpatients in a radiology center with an emphasis on priority. To more compatibility to real-world conditions, we assume that the elapsed times in different stages to be uncertain that follow from the specific distribution function. The objective is to minimize outpatients’ total spent time in a radiology center. The problem is formulated as a fle...
most impact tests are carried out on specimens with specific stacking sequence and dimensions to meet standard and experimental limitations. the damaged areas and the resulted reduction in the strength values of specimens may not agree very well with those of real application. in this paper an attempt is made to study the variation in the size of damaged areas due to varying the dimension of te...
The main aim of blasting operations in mining and civil engineering projects is size reduction of the rock-mass. Particle size reduction (P.S.R) affects the efficiency of the loading, haulage and milling equipments. Therefore, prediction of mean fragment size in designing optimum blasting patterns is crucial. In this research, a model is presented for predicting mean fragment size caused by bla...
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