نتایج جستجو برای: 2009 using these data
تعداد نتایج: 6600837 فیلتر نتایج به سال:
Background and Aim: In many medical studies along with longitudinal data, which are repeatedly measured during a certain time period, survival data are also recorded. In these situations, using models such as, mixed effects models or GEE method for longitudinal data and Cox model for survival data, are not appropriate because some necessary assumptions are not met. Instead, the joint models hav...
abstract: the present study is about prophet ishmael, some parts of his life; his personality in the quran and the bible; and the comparison of the content of these two religious books. compilation of the study has been done with a new perspective and new presentation approach. since prophets have been human beings’ role model and their life has been a perfect example for humanity in all ages,...
nowadays, the development of anti cancer drugs is an important subject in pharmacology. bisphosphonates (b.p) are a great choice for design and production of the types of drugs which not only could perform as anti cancer agents but also could inhibit the function of acetyl cholinesterase (ache). ache hydrolyzes the acetylcholine (which is a neurotransmitter in nervous system) using the oh in i...
background: the number of failed courses and semesters in students are indicatorsof their performance. these amounts have zero inflated (zi) distributions. using zi poisson and negative binomial distributions we can model these count data to find the associated factors and estimate the parameters. this study aims at to investigate the important factors related to the educational performance of ...
in civil engineering concrete is a material combined of hydraulic cement, sand, gravel and water. gravel and sand compose 60 to 70 percent of concrete. these aggregates support compression force of concrete. cement paste acts as glue to stick grain together. in bushehr factories producing aggregates do not operate according to astm standards, so that fineness modulus (fm) of the produced sands ...
evaluation of remedial services quality of hospitals by using servqual scale (case study: educating hospitals dependence to medicine university of yazd) ar rajabipoor meybodi , ma d farid , phd, t rajabipoor meybodi , bsc received: 16 aug, 2009 accepted: 25 oct, 2009 abstract: background & aims: patient is an essential axis in hospital and all services performed for him. his satisfaction and co...
Meat inspection records in abattoirs located in Torbat-e-heidarieh (northeast Iran), from 18 May 2009 to 30 May 2015, were used to determine the prevalence of liver fluke diseases in sheep and cattle in the region. A total of 1004858 livestock including 867015 sheep and 137843 cattle were slaughtered in the 6-year period. Dicrocoeliosis, fasciolosis and hydatidosis were responsible for 2%, 1.92...
: Concept maps of chemistry can be obtained from thesaurus of chemistry. Analysis of information in the field of chemistry is done at graduate level, based on comparing and analyzing chemistry dissertations by using these maps. Therefore, the use of thesaurus for analyzing scientific information is recommended. Major advantage of using this method, is that it is possible to obtain a detailed ma...
A total of 1752 strains of osrnophilic yeasts were isolated from honey and po]]ens. Fody-three strains Gf esmophilic yeasts produced po]yols, among whieh 6 strains produced erythritol in good yields. On the other hand, 52 osmophilic yeasts converted sucrose te fin]etooligosaccharides, among which 8 strains produced both extra and intracel]ular P-fructofuranosidase, which conyerted sucrose to fr...
Many species of tachinid flies are viewed as generalist parasitoids because what is apparently a single species of fly has been reared from many species of caterpillars. However, an ongoing inventory of the tachinid flies parasitizing thousands of species of caterpillars in Area de Conservación Guanacaste, northwestern Costa Rica, has encountered >400 species of specialist tachinids with only a...
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