Evolution acceptance and epistemological beliefs of college biology students          下载免费PDF全文

Lisa A. Borgerding  Hasan Deniz  Elizabeth Shevock Anderson 《科学教学研究杂志》2017,54(4):493-519

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Paired values of serum fructosamine and blood glucose for the screening of gestational diabetes mellitus: A retrospective study of 165 Saudi pregnant women     

Haseeb Ahmad Khan  Samia Hasan Sobki  Abdullah Saleh Alhomida  Shaukat Ali Khan 《Indian journal of clinical biochemistry : IJCB》2007,22(1):65-70

This study reports the utilization of serum fructosamine and blood glucose for the screening of gestational diabetes mellitus (GDM). Blood samples from 165 pregnant women were analyzed for fasting blood glucose (FBG), random blood glucose (RBG) and serum fructosamine. The actual fructosamine levels were corrected for serum protein (c-Fruct) for more precise presentation. Two cut-off values of FBG (>5.3 mmol/L and >7.0 mmol/L) and RBG (>7.8 mmol/L and >11.0 mmol/L) were used to classify hyperglycemic subjects for subsequent evaluation. The average values±standard deviations for FBG, RBG and cFruct were 5.865±1.95, 7.767±3.21 and 2.387±0.47 mmol/L, respectively. FBG levels were significantly correlated with RBG (Pearson correlation=0.597, P<0.001). Significant correlations were also observed between cFruct and FBG (Pearson correlation=0.673, P<0.001) or RBG (Pearson correlation=0.641, P<0.001). Out of 165 subjects, 24 (14.5%) cases were classified as hyperglycemic on the basis of FBG>7.0 mmol/L or RBG>11.0 mmol/L; use of lower cut-off values resulted higher frequencies of hyperglycemia. Whereas, a combined criteria of FBG>5.3 mmol/L and cFruct >2.5 mmol/L predicted 35 patients as the most probable hyperglycemic as compared to 32 patients identified using the criteria of RBG >7.8 mmol/L and cFruct >2.5 mmol/L. These criteria were associated with 4.8% and 3.6% false-positivity at the expense of 3.6% and 3.0% false-negative outcomes, respectively. The levels of FBG, RBG and cFruct were significantly higher in hyperglycemic groups (irrespective of grouping criteria) as compared to the respective normal groups. In conclusion, these findings clearly indicate that the paired values of cFruct with FBG or RBG could help in filtering high-risk individuals for OGTT and therefore avoiding a unnecessary OGTT.  相似文献   

Education for Syrian Refugees: The New Global Issue Facing Teachers and Principals in Turkey     

Hasan Aydin  Yeliz Kaya 《Educational Studies A Journal of the American Educational Studies Association》2019,55(1):46-71

This study addresses the educational status and needs of Syrian school-age children at Turkish public schools and the perspectives of teachers and school principals who work with Syrian refugee students. Data was collected from an ongoing qualitative interpretive case study research project using semistructured interviews with teachers and principals who worked with Syrian refugees in 2 inner-city elementary schools in Istanbul, Turkey. The findings of this study indicate that state schools provide many Syrian children with access to education that addresses the needs and challenges associated with the refugee school-age children. For example, Syrian children are thought to have rights identical to Turkish children regarding access to a free education in the Turkish public school setting, and the government has allowed Syrian students to enroll in universities without examinations or without having to show proof that they had attended universities in Syria. However, language barriers with respect to speaking and understanding Turkish must be mitigated to integrate Syrian refugees into Turkish culture. The results of the study also indicate that Syrian students are in a constant state of depression and trauma due to war and migration. Because of language-related issues and limited access to everyday necessities, Syrian children are often in need of comprehensive psychological support. Thus, this study recommends that teachers and principals participate in professional training and development programs to be able to provide psychological support to students.  相似文献   

A Parent-Implemented Intervention to Improve Imitation Skills by Children with Autism: A Pilot Study     

Hasan Y. Zaghlawan  Michaelene M. Ostrosky 《Early Childhood Education Journal》2016,44(6):671-680

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Challenge of rural people to reduce digital divide in the globalized world: Theory and practice   总被引：1，自引：0，他引：1  

Hasan Akca  Murat SayiliKemal Esengun 《Government Information Quarterly》2007

In the future, knowledge will manage the world since knowledge gives a power to people/states to direct governmental and non-governmental organisations. Therefore, as starting in the last quarter of 20th century, leaders, bureaucrats, policy makers, education experts, scientists, local managers and people who are in the conscious of this reality have tried to draw the vision of their countries and reduce digital divide. Design of web pages and Internet access can be a bridge between rural and urban people in terms of marketing of agricultural inputs and outputs, supplying extension services for farmers, development of human resources, advertisement of natural, historical and cultural values, etc.  相似文献   

Cytotoxicity and Apoptosis Inducing Activities of 2-Amino-4H-chromene-3-carbonitrile Derivatives Loaded on Gold Nanoparticles Against Human Breast Cancer Cell Line T47D     

Zahra Saffari  Maryam Farahnak Zarabi  Hasan Aryapour  Alireza Foroumadi  Ali Farhangi  Soheil Ghassemi  Azim Akbarzadeh 《Indian journal of clinical biochemistry : IJCB》2015,30(2):140-149

Chemotherapy drugs, used for prevention of uncontrolled cell proliferation in certain tissues as well as inducing apoptosis in tumor cells, are important candidates for treatment of cancer. The synthesized 2-amino-4H-chromene-3-carbonitrile derivatives effective on cancerous cells resistant to other drugs such as Paclitaxel were used due to their ability in induction of apoptosis. The growth inhibitory and inducing apoptosis activities were determined. In order to make it target-oriented, the best compound was conjugated with gold nanoparticles (NPs) by aspartic acid with chemical reduction method. Cytotoxicity effect of 2-amino-4H-chromene-3-carbonitrile derivatives against the T47D breast cancer cell line was determined by MTT assay. The synthesis of gold NPs was confirmed by transmission electron microscopy, UV–Vis and dynamic light scattering. To assess the effects of compounds on the process of apoptosis, staining methods with acridine orange–ethidium bromide and Hoechst staining by fluorescence microscopy and DNA fragmentation by the diphenylamine method were used. The synthesized compounds containing two NH₂ groups on benzene rings, demonstrated more cytotoxicity effect. The effect of conjugation with gold NPs and the induction of apoptosis were studied with the best compound. The cytotoxicity effects of the synthesized 2-amino-4H-chromene-3-carbonitrile compounds were changed by replacement of NO₂ group on thiol ring with different chemical groups on the benzene ring. Analyses of treated cell lines by conjugated and non-conjugated forms of compounds verified their ability in inducing apoptosis while conjugated form demonstrated higher apoptosis.  相似文献   

HIGHER EDUCATION IN ALBANIA. TRENDS AND PERSPECTIVES     

Hasan Muçostepa 《Higher Education in Europe》1985,10(2):94-102

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Preparation,Characterization and Cytotoxic Effects of Pegylated Nanoliposomal Containing Carboplatin on Ovarian Cancer Cell Lines     

Meysam Ebrahimifar  Amir Nili-Ahmadabadi  Azim Akbarzadeh  Hasan Ebrahimi Shahemabadi  Majid Hasanzadegan  Hemen Moradi-Sardareh  Hassan Madadizadeh  Jalal Rezaee-diyan 《Indian journal of clinical biochemistry : IJCB》2017,32(2):230-234

Carboplatin is a chemotherapeutic agent used against various malignancies such as ovarian carcinoma. The aim of this study is to improve the therapeutic efficacy of carboplatin using pegylated liposomal nanocarriers. Nanoparticles were synthesized using thin film hydration technique and characterized for shape morphology, particle size, zeta potential and drug-release properties. In the next step, A2780S and A2780CP ovarian cancer cell lines were used to determine the efficacy of nanodrug by MTT assay. The particle size and zeta potential of nanodrug were measured 244.3 ± 19.6 nm and ?22.9 ± 1.7 mV, respectively. High encapsulation capacity (78.6 ± 3.7 %) confirmed the efficiency of technique. The cytotoxicity results also showed that nanodrug compared to free drug improve the efficacy of carboplatin against both A2780S (P < 0.01) and A2780CP (P < 0.05) cell lines. In conclusion, the findings of our study suggested pegylated liposomal nanocarriers are proper for carboplatin delivery to ovarian cancer cell lines A2780S and A2780CP.  相似文献   

Examination of Changes in Prospective Elementary Teachers’ Epistemological Beliefs in Science and Exploration of Factors Meditating That Change     

Hasan Deniz 《Journal of Science Education and Technology》2011,20(6):750-760

Epistemological beliefs refer to an individual’s thinking and beliefs about the nature of knowledge and knowing. The present study examined two research questions: (1) how do prospective elementary teachers’ epistemological beliefs in science change as a result of instruction specifically designed to improve their epistemological beliefs and (2) what role does the conceptual ecology for epistemological beliefs play in their development? The study was correlational with a sample of 161 prospective elementary teachers (148 female, 13 male). Self-report questionnaires tapping four dimensions of epistemological beliefs (certainty-simplicity, justification, source, attainability of truth) were given to prospective elementary teachers at two time points during an introductory science course. Results indicated that prospective elementary teachers became more sophisticated in their beliefs across all four dimensions of epistemological beliefs. It was found that one component of conceptual ecology for epistemological beliefs, thinking dispositions, was related to the development of epistemological beliefs. Prospective teachers with high thinking dispositions developed more sophisticated beliefs in comparison to prospective teachers with low thinking dispositions.  相似文献   

Developing a questionnaire on attitude towards school     

Hasan??ekerEmail author 《Learning Environments Research》2011,14(3):241-261

The purpose of the present study was to develop a questionnaire to assess student attitudes towards school by describing the factors that affect these attitudes. For this purpose, a sample of 362 (11–13 years-old) elementary-school students was used. Both exploratory and confirmatory factor analyses were carried out. The questionnaire consists of six factors (Belongingness to School, School Image, Loneliness at School, Teaching, Testing and Feedback-Giving Activities, and Reluctance). When data were tested via structural equation modelling, examination of fit indices indicated that the model came close to fitting the data with goodness-of-fit coefficients at recommended levels. The School Attitude Questionnaire was found to be suitable in the light of the findings of our study, and its scales are thought to affect students’ attitudes towards school.  相似文献