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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Reviews in Clinical Medicine
- نوع مقاله: Journal Article
- کلمات کلیدی: Vitamin D,Preeclampsia,Pregnancy outcomes,deficiency
- چکیده:
- چکیده انگلیسی: Complications related to pregnancy and childbirth are the leading causes of disability and death among women of reproductive age in developing countries, constituting at least 18% of the global burden of disease in this age-group. Preeclampsia is a serious, pregnancy-specific disorder that affects up to 8% of pregnant women. Preeclampsia may lead to maternal and offspring mortality and it increases the risk of premature birth and fetal growth restriction. Vitamin D is a potent immunomodulatory agent. There is an evidence pointing toward an association between the vitamin D status and preeclampsia risk.
The purpose of the present study is to review the available literature investigating the role of serum levels of vitamin D in preeclampsia.
The study findings further highlight the possibility that vitamin D deficiency is a strong, independent risk factor for preeclampsia and vitamin D supplementation may be a simple step to reduce the risk of adverse pregnancy outcomes providing lifelong benefits both to the mother and her developing child.- انتشار مقاله: 21-01-1393
- نویسندگان: Ameneh Movahedian,Nayereh Ghomian,Samaneh Soltani,Nushin Chalakinia
- مشاهده
- جایگاه : پژوهشی
- مجله: Reviews in Clinical Medicine
- نوع مقاله: Journal Article
- کلمات کلیدی: Vitamin D,Preeclampsia,Pregnancy outcomes,deficiency
- چکیده:
- چکیده انگلیسی: Complications related to pregnancy and childbirth are the leading causes of disability and death among women of reproductive age in developing countries, constituting at least 18% of the global burden of disease in this age-group. Preeclampsia is a serious, pregnancy-specific disorder that affects up to 8% of pregnant women. Preeclampsia may lead to maternal and offspring mortality and it increases the risk of premature birth and fetal growth restriction. Vitamin D is a potent immunomodulatory agent. There is an evidence pointing toward an association between the vitamin D status and preeclampsia risk.
The purpose of the present study is to review the available literature investigating the role of serum levels of vitamin D in preeclampsia.
The study findings further highlight the possibility that vitamin D deficiency is a strong, independent risk factor for preeclampsia and vitamin D supplementation may be a simple step to reduce the risk of adverse pregnancy outcomes providing lifelong benefits both to the mother and her developing child.- انتشار مقاله: 21-01-1393
- نویسندگان: Ameneh Movahedian,Nayereh Ghomian,Samaneh Soltani,Nushin Chalakinia
- مشاهده
- جایگاه : پژوهشی
- مجله: Khayyam Journal of Mathematics
- نوع مقاله: Journal Article
- کلمات کلیدی: domination number,distinguishing index,distinguishing number
- چکیده:
- چکیده انگلیسی: The distinguishing number (index) of a graph $G$ is the least integer $d$
such that $G$ has a vertex labeling (edge labeling) with $d$ labels that is preserved only by the trivial automorphism. A set $S$ of vertices in $G$ is a dominating set of $G$ if every vertex of $V(G)setminus S$ is adjacent to some vertex in $S$. The minimum cardinality of a dominating set of $G$ is the domination number of $G$. In this paper, we obtain some upper bounds for the distinguishing number and the distinguishing index of a graph based on its domination number.- انتشار مقاله: 07-11-1397
- نویسندگان: Saeid Alikhani,Samaneh Soltani
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Immunology
- نوع مقاله: Journal Article
- کلمات کلیدی: Immunophenotyping,Lymphocyte Subsets,HIV Seronegativity,Reference Value
- چکیده:
- چکیده انگلیسی: Background: Lymphocyte subsets enumeration is considered prominent in the management of primary and acquired immunodeficiency disorders. Because of local variations due to race, age, gender, and environmental conditions on lymphocyte subsets, and to improve the accuracy of interpretation of laboratory findings, reference intervals must be determined in every population.
Objective: To establish a normal reference range for CD3+ , CD4+ , CD8+ , CD19+ and CD56+ lymphocytes in a healthy Iranian adult population using flowcytometry.
Method: Blood samples were collected from 221 HIV seronegative individuals, including 112 females and 109 males, with ages ranging from 20 to 40 years old. The percentage of lymphocytes expressing either of CD3, CD4, CD8, CD19 and CD56 surface markers were determined by flowcytometry assay.
Result: Total mean percentage and absolute count of lymphocyte subsets were as follows: CD3+ : 70.90 ± 7.54%, 1800.87 ± 471.09 cells/µl; CD4+ : 41.04 ± 7.86%, 1039.99 ± 338.02 cells/µl; CD8+ : 31.11 ± 6.60%, 783.95 ± 234.87 cells/µl; CD19+ : 12.77 ± 4.56%, 328.37 ± 153.17 cells/µl; CD56+ : 15.53 ± 6.34%, 388.62 ± 176.17 cells/µl, respectively. The ratio of CD4+ /CD8+ lymphocytes for the studied population was 1.39 ± 0.48. Significant differences were observed between male and female subjects indicating that the average percentage of CD3+ cells (p=0.017) and CD4+ T cells (p=0.003) were higher in the female population, whereas the average percentage of CD19+ cells (p=0.02) tended to be higher among males. However, investigations on the CD56+ NK cell and CD8+ T cell sub-populations did not show any statistical differences between the two genders. In comparison with reports of other populations, we were confronted with different results.
Conclusion: Establishing reference values of lymphocyte subsets for each population is helpful in achieving standard criteria for the prognosis of HIV infection. Therefore, normal ranges established by this survey can be used as a reference for decisions made in clinical practice.- انتشار مقاله: 15-05-1395
- نویسندگان: Atefeh Kamallou,Mahbobeh Haji Abdolbaghi,Minoo Mohraz,Mernaz Rasolinejad,Ehsan Karbasi,Bita Ansaripour,Samaneh Soltani,Arezou Rezaei,Neda Khalili,Aliakbar Amirzargar
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Finance and Managerial Accounting
- نوع مقاله: Journal Article
- کلمات کلیدی: Prediction,neural networks,Insurance Industry,Factors Affecting Churn
- چکیده:
- چکیده انگلیسی: In today's growing, saturated and competitive markets, the insurance industry, like other industries, is suffering from customer churn. Recent advances in communications and technology have led to increased awareness and ease of comparison of insurance policies and services. Thus, insurers are constantly confronted with new offers from competing companies and easily turn to competitors; in other words, they churn. The aims of this research are actually pursued through the following research question. What are the main factors of churn in the Iranian insurance industry? This study is conducted in two phases: qualitative and quantitative. First, in the qualitative phase, 15 experts in the insurance industry are interviewed to identify the factors affecting churn. Then, based on the identified factors in the research literature and comparing them with the results of the interview, 8 main influential factors are identified and finalized. In the quantitative phase, these indices are first weighted by hierarchical analysis technique. Then, the statistical population is determined in the quantitative phase; they included the insurers of the Iranian insurance company, and by selecting a sample of 120, neural network technique is applied to fit the model. The calculated R = 0.74 proves that the eight identified factors (type of insurance, premium, final result of claims, duration of cooperation, payment method, number of installments, number of policies, and number of claims) can best explain the reasons of churn of policyholders.
- انتشار مقاله: 06-02-1399
- نویسندگان: Samaneh Soltani Lifshagerd,Kambiz Shahroodi,Ebrahim Chirani
- مشاهده
- جایگاه : پژوهشی
- مجله: Algebraic Structures and Their Applications
- نوع مقاله: Journal Article
- کلمات کلیدی: distinguishing index,edge-colourings,upper bound
- چکیده:
- چکیده انگلیسی: The distinguishing index of a simple graph $G$, denoted by $D'(G)$, is the least number of labels in an edge labeling of $G$ not preserved by any non-trivial automorphism. We prove that for a connected graph $G$ with maximum degree $Delta$, if the minimum degree is at least two, then $ D'(G)leq lceil sqrt{Delta }rceil +1$. We also present graphs $G$ for which $D'(G)leq lceil sqrt{Delta (G)}rceil$.
- انتشار مقاله: 12-09-1398
- نویسندگان: Saeid Alikhani,Samaneh Soltani
- مشاهده