Study of Sea level changes with Leckie method of the Abderaz Formation (Middle Turonian-Early Campanian) at type section based on foraminifera

In this research the Abderaz Formation at its type section with an age of Turonian-early Campanian and a thickness of 300 m containing.light grey shale and marls was investigated. Statistical Studise of the morphotype groups of planktonic foraminifera shows that the majority of them are of shallow water forms (SWF) and deep water forms (DWF) and planktonic to benthic ratio is high indicating specific condition of oligotrophy and sedimentation in a relatively deeper marine conditio

Clustering and Combining Pattern of High-Risk Behaviors among Iranian University Students: A Latent Class Analysis

Background: High-risk behaviors are increasing among young adults worldwide. We aimed to identify university students’ subgroups on the basis of high-risk behaviors and to assess the role of age, living alone, religious beliefs, and parental support in the membership of specific subgroups. Study design: A cross-sectional study Methods: The study was conducted in Bushehr (the south of Iran) from November to December 2016. The sample included 977 university students selected through random sampling. The data were collected using a self-administered questionnaire. Then, latent class analysis was used to classify the students. Results: Totally, five latent classes were identified as follows: low risk, high risk, somewhat low risk, hookah user, and very high risk. Notably, 7.7% and 2.5% of the students belonged to high risk and very high risk classes, respectively. The results suggested the protective effect of familial support and religiosity on high-risk behaviors. Conclusions: This study indicated the co-occurrence of high-risk behaviors. The findings can be used to plan and evaluate interventions by considering risk factors and protective factors in universities

The effects of liquid extract of Allium sativum on the basic and speed-dependent electrophysiological properties of islolated atrioventicular nodal of rabbit

زمینه و هدف: گیاهان دارویی، به علت سهولت دسترسی، کاهش عوارض جانبی و قیمت مناسب، به عنوان جایگزین‌های شایسته داروهای شیمیایی، همواره مورد توجه بوده‌اند. مطالعات قبلی در مورد اثرات فارماکولوژیک و بیوشیمیایی گیاه سیر (Allium sativum) بیانگر اثرات کاهندگی فشارخون، اثرات آنتی آریتمیک، خاصیت اینوتروپ و کرونوتروپ منفی می باشد. هدف از این مطالعه تعیین اثرات عصاره آبی سیر بر روی خواص پایه و کارکردی گره دهلیزی بطنی می باشد. روش بررسی: در تحقیق حاضر از گستره بافتی جدا شده گره دهلیزی بطنی خرگوش (2-5/1 کیلوگرم) شامل دهلیز راست، سپتوم بین دهلیزی و دسته هیس جهت تعیین تاثیر غلظت های مختلف عصاره آبی سیر استفاده شد. پروتکل های انتخابی تحریکی (تسهیل، خستگی، ریکاوری) برای بررسی خواص گره دهلیزی – بطنی در 14 خرگوش (2 گروه) به صورت مستقل مورد استفاده قرار گرفتند. در گروه اول آزمایشی (8 خرگوش) غلظت های مختلف سیر (20، 30، 100 و 850 میلی گرم در لیتر) و در گروه دوم وراپامیل (1/0 میکرومولار) بکار برده شد. داده ها با استفاده از آزمون های آماری ویکاکسون و آنالیز واریانس تجزیه و تحلیل شد. یافته ها: نتایج این تحقیق بیانگر تاثیر معنی دار غلظت های مختلف عصاره گیاه در افزایش پارامترهای الکتروفیزیولوژیک پایه (زمان هدایت دهلیزی–بطنی، ونکباخ، زمان تحریک ناپذیری کارکردی و زمان تحریک نپذیری موثر) و همچنین میزان خستگی می باشد (05/0

Comparing the viability and in vitro maturation of cumulus germinal vesicle break down (GVBD) oocyte complexes using two vitrification techniques in mice

Background: Vitrification is assumed to be a promising method to cryopreserve human oocytes but still needs optimizing. Objective: The aim of this study was to improve the single step and step-wise vitrification effects on maturing mouse GVBD oocytes by ethylene glycol (EG) in conventional straws. Materials and Methods: Oocytes with compact cumulus cells were cultured for 3hr in TCM199 supplemented with 10% fetal bovine serum (FBS) in 5% CO2 in air. GVBD oocytes were randomly allocated into three groups. (1) Control (non-vitrified group), (2) exposed to single-step vitrification (contained of EG 20%+0.5M sucrose), (3) exposed to step-wise vitrification (2%, 5%, 10%, 20%EG +0.5M sucrose). In vitrification groups,oocytes were thawed and underwent additional 21 hr maturation. Viability of oocytes and maturation to MII stage were analyzed using inverted microscope and additionally by staining of propidium iodide and Hoechst 33342. Results: All non-vitrified oocytes were viable after 24 hr; however, viability of vitrified samples in single-step group was significantly lower than that of the step-wise and control Groups. Also, the maturation rate in the step-wise group was significantly higher (p < 0.05) compared to single-step. Conclusion: These results suggest that step-wise vitrification of GVBD oocytes as compared to single step vitrification was better in the rate of survival and in vitro maturation of oocytes

Rapid Separation & Simultaneous Spectrophotometric Determination of U(VI) Using N-m- Tolyl-o-methoxybenzohydroxamic Acid

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Optimal electricity supply system under Iranian framework limitations to meet its emission pledge under the Paris climate agreement

As part of its&nbsp;Paris Agreement&nbsp;commitment, Iran pledged to decrease 4 percent of its carbon dioxide (CO2) emissions from 2020 to 2030. About 29% of total emission in Iran belongs to electricity supply while energy consumption in other sectors (transport, household, and industry) have a lower share in CO2 emission. The main concern here is finding the optimal mix of power plants in the electricity supply system that should be deployed to meet Iran’s mentioned respective targets. So, we developed a non-linear mathematical programming model for Iran’s electricity system to address this concern. Results show that a 10-20% diffusion of renewable energy and converting gas turbine power plants to gas combined cycle technology with 5% annual rate can satisfy Iran’s emissions pledge under the Paris Climate Accord. Finally, this model has been run for years between 2017-2030. Four scenarios have also been prepared based on different Iranian Five-Year Development Plans

Review of Competitive Intelligence & Competitive Advantage in the Industrial Estates Companies in the Kerman City: Appraisal and Testing of Model by Amos Graphics

Abstract: The purpose of this paper is to assess the impact of competitive intelligence on the competitive advantage of corporate organizations. While much empirical works have centered on competitive advantage, the generalization of its relationship to competitive intelligence in the Iran context has been under researched. A 32- item survey questionnaire to measure competitive intelligence and competitive advantage was developed and corporates in Iran are selected from industrial estates companies in the kerman city as a sample for this study. For analysis data used of the SPSS 16 and appraisal of model by Amos graphics 18. The results of the study reported in this paper validated and finds strong association between competitive intelligence and competitive advantage of corporate organizations in the Iran context. The main finding of this study is that competitive intelligence lead to competitive advantage in corporate organizations in Iran. The implications of the results of this study are clear for scholars and managers. Key words: Competitive intelligence; Competitive advantag

The Effect of Van Dijk Discourse Strategies on Iranian EFL Learners’ Writing Proficiency

This study tried to improve the writing proficiency of Iranian EFL students utilizing an innovative model through implementing and operationalizing the principles of critical discourse analysis which was introduced by Van Dijk’s (2000) well-known socio-cognitive model. To this end, 57 intermediate language learners studying English in language institutes for several years were selected as the participants of the study using a version of TOEFL test as the selected proficiency test. The included participants were randomly divided into two groups of experimental and control—with 28 students in experimental group (16 females and 12 males) and 29 students in control group (17 females and 12 males). Both groups went through a three-stage model (pre-writing, during-writing and post-writing). The teaching procedure on writing had some differences between the instruction provided for the experimental group and the instruction presented to the control group in which the experimental group received some instruction of some suitable discursive strategies, namely, comparison, example (illustration), explanation, repetition, reasonableness and context description. After instruction, two groups were asked to write on a topic and their compositions were scored using holistic scoring procedure in order to guarantee the high reliability. The results of the study showed the significant differences between the performances of the experimental and control groups which indicated to the efficiency of the CDA-oriented approach to teach writing skill. However, the result of the study showed non-significant differences between the performances of the two genders as well as the performances of females and males in each group

Enhancing Organizational Learning Capabilities through Digital Transformation: Role of Perceived Organizational Support and Knowledge Oriented Leadership

Digital transformation has become a necessity for organizations due to the speed with which it has prevailed into the lives. However, how it results in developing the organizational learning capabilities has yet not been well established in the literature. Building upon dynamic capabilities theory, perceived organizational support and knowledge oriented leadership were introduced as mediating mechanisms whereas knowledge sharing ability is the conditional variable. This study uses the quantitative approach to examine how and when digital transformation associates with organizational learning capabilities. Samples for two studies were drawn from banking sector of Pakistan. Confirmatory factor analysis using Mplus software was opted to analyze the data set. Findings of the study support the hypotheses that perceived organizational support and knowledge oriented leadership mediate the relationship between digital transformation and organizational learning capabilities whereas knowledge sharing ability moderates the relationship between digital transformation and the two mediators; namely perceived organizational support and knowledge oriented leadership. Full model was also supported. Digital transformation enhances the organizational learning capabilities through perceived organizational support and knowledge oriented leadership provided that the employees possess the knowledge sharing ability