نتایج جستجو برای: experimental design with pre
تعداد نتایج: 9842189 فیلتر نتایج به سال:
the main objective of the present study is to investigate the feasibility of using carboxymethyl chitosan magnetic nanoparticles (ccmn) for the adsorption of cd2+. the study also reports important parameters, which affect the adsorption process, i.e., ph, adsorbent dose, contact time and concentration of cd2+, using box-behnken designs. firstly, functional carboxymethyl chitosan magnetic nanopa...
perlite or pearl stone is a natural glass which has formed by rapid cooling of viscous lava or magma. perlite is mainly composed of silica, aluminum, potassium and sodium. in this experiment, perlite was used as a low-cost source of si and al to synthesis of sodalite zeolite using the alkaline hydrothermal treatment. a statistical taguchi design of experiments was employed to evaluate the effec...
background a potential treatment for healing hepatic tissue is delivering isolated hepatic cells to the site of injury to promote hepatic cells formation. in this technology, providing an appropriate injectable system for delivery of hepatic cells is an important issue. in this regard, fibrin scaffolds were designed with many advantages over other scaffolds like cell delivery vehicles for biode...
The present study aimed to determine the effectiveness of meta-diagnostic treatment on children's behavioral adaptation, anxiety, and dental fear. This research was applied in terms of purpose and semi-experimental in terms of research design with pre-test-post-test design and control group. The statistical population of this research was made up of all children aged 11 to 7 years who were refe...
the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...
perceptions of spirituality in australian undergraduate nursing students: a pre- and post-test study
ba ck g r oun d & aim: spiritual care is an integral part of a holistic nursing care. providing spiritual care has a positive impact on patients’ health outcomes. although nurses understand the importance of incorporating patient’s spiritual beliefs into the care practice, understanding their spirituality before addressing the spirituality of patients is also important. therefore, the ai...
Aim: The purpose of this study was to examine the effect of the training of problem-solving and decision-making skills on the reduction of addicts’ positive attitudes to narcotics. Method: The design of this study was experimental design namely: pre and post test with control group. The population included all addicts referring to Sanandaj self-report centers (500 addicts). By random sampling, ...
Introduction: Marital infidelity is a problem that severely affects people's lives and is one of the main causes of divorce. The purpose of this study was to compare the effectiveness of Schema Therapy and Cognitive Behavioral Therapy on communication and problem solving skills and mental health in couples with marital infidelity. Method: The present study is an experimental one with pre-test a...
INTRUDUNCTION: Relief workers are among the groups that are present in the site from the very first moments of an accident or disaster and perform relief tasks. Various studies have shown that relief is one of the stressful activities due to a set of factors during a crisis. The present study was conducted with the aim to determine the effectiveness of the cognitive behavioral stress management...
one of the most significant issues in pharmaceutical industries, prior to commercializationof a pharmaceutical preparation is the “preformulation” stage. however, far too attention hasbeen paid to verification of the software assisted statistical designs in preformulation studies.the main aim of this study was to report a step by step preformulation approach for a semisolidpreparation based on ...
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