In this study two actual types of problems are considered and solved: 1) determining the maximum common connected fragment of the T-tree (T-directed tree) which does not change with time; 2) determining all maximum common connected fragments of the T-tree (T-directed tree) which do not change with time. The choice of the primary study of temporal directed trees and trees is justified by the wid...

in medicine, there is a rapid development of a knowledge base. medical professionals need to sustain and advance their competence to practice in response to these varieties. so, there is increased interest in self-directed learning methods. study guides can make a major contribution to self-directed learning. this study was carried out to evaluate the effect of study guides on improving self-le...

human granulocyte colony stimulating factor (hg-csf) induces proliferation and differentiation of granulocyte progenitor cells. this glycoprotein is currently being used for treatment of neutropenia, in patients who have undergone bone marrow transplantation. so far, different researchers have tried to enhance hg-csf biological activity and stability. in this study, polymerase chain reaction (p...

research shows a positive relationship between self-directed learning (sdl) andreading comprehension. the present quasi-experimental study attempted to expandthe scope of sdl by investigating its effect on the components of readingcomprehension. sixty high school students took the reading comprehension part ofpet as the pretest and the posttest. over 16 weeks, the experimental group,consisting ...

derivatives of phenyl-keto butenoic acids have been reported to be inhibitors of pyruvate decarboxylase, (pdc). the inhibition of transketolase, a thiamine requiring enzyme such as pdf, by meta nitrophenyl derivative of 2-oxo-3-butenoic acid (mnpb) is reported here. these studies indicate that the inhibitor binds to the enzyme at the active site. a two-step inhibition was observed, first the in...

‎ in the present article‎, ‎we study some categorical properties of the category {$bf‎ cpo_{sep}$-$s$} of all {separately strict $s$-cpo's}; cpo's equipped with‎ a compatible right action of a separately strict cpo-monoid $s$ which is‎ strict continuous in each component‎. ‎in particular‎, we show that this category is reflective and coreflective in the‎ category of $s$-cpo's‎, ‎find the free a...

one of the major advances in medicine has been the use of cardiopulmonary resuscitation (cpr) procedure since the 1960s in order to save human lives. this procedure has so far saved thousands of lives. although cpr has helped to save lives, in some cases, it prolongs the process of dying, suffering, and pain in patients. this study was conducted to explain the experience of iranian physicians r...