نتایج جستجو برای: expression data

تعداد نتایج: 3146554  

Journal: :iranian journal of cancer prevention 0
pegah khosravi 1. dept. of bioinformatics, institute of biochemistry and biophysics (ibb), university of tehran, tehran, iran 2. school of biological sciences, institute for research in fundamental sciences (ipm), tehran, iran javad zahiri 1. faculty of mathematics, k. n. toosi university of technology, tehran, iran 2. dept. of bioinformatics, institute of biochemistry and biophysics (ibb), university of tehran, tehran, iran vahid h. gazestani institute of parasitology, mcgill university, montreal, quebec, canada samira mirkhalaf dept. of bioinformatics, institute of biochemistry and biophysics (ibb), university of tehran, tehran, iran mohammad akbarzadeh dept. of bioinformatics, institute of biochemistry and biophysics (ibb), university of tehran, tehran, iran mehdi sadeghi 1.national institute of genetic engineering and biotechnology, tehran, iran 2.school of biological sciences, institute for research in fundamental sciences (ipm), tehran, iran

background prostate cancer is a serious genetic disease known as the first widespread cancer in men, yet the molecular changes required for the cancer progression is not fully understood. availability of high-throughput gene expression data has led to the development of various computational methods for the identification of critical genes involved in the cancer. methods in this paper, we show ...

Journal: :journal of paramedical sciences 0
hamid alavi majd biostatistics department, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran soodeh shahsavari biostatistics department, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran soheila khodakarim school of public health, shahid beheshti university of medical science, tehran seyyed mohammad tabatabaei medical informatics department, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran bi bi fatemeh nobakht motlagh ghochani proteomics research center, shahid beheshti university of medical sciences, tehran

an important step in considering of gene expression data is obtained groups of genes that have similarity patterns. biclustering methods was recently introduced for discovering subsets of genes that have coherent values across a subset of conditions. the las algorithm relies on a heuristic randomized search to find biclusters. in this paper, we introduce biclustering las algorithm and then appl...

Journal: :journal of paramedical sciences 0
mahdieh khalili department of biostatistics, faculty of paramedical sciences, shahidbeheshti university of medical sciences, tehran, iran hamid alavi majd department of biostatistics, faculty of paramedical sciences, shahidbeheshti university of medical sciences, tehran, iran soheila khodakarim department of biostatistics, faculty of paramedical sciences, shahidbeheshti university of medical sciences, tehran, iran batool ahadi mohsen hamidpour department of hematology, faculty of paramedical sciences, shahidbeheshti university of medical sciences, tehran, iran

the aim of this study was to propose a method for improving the power of recognition and classification of thromboembolic syndrome based on the analysis of ‎ gene expression data using artificial neural networks. the studied method was performed on a dataset which contained data about 117 patients admitted to a hospital in durham in 2009. of all the studied patients, 66 patients were suffering ...

Journal: :iranian journal of public health 0
azadeh bashiri marjan ghazisaeedi reza safdari leila shahmoradi hamide ehtesham

background: today, despite the many advances in early detection of diseases, cancer patients have a poor prognosis and the survival rates in them are low. recently, microarray technologies have been used for gathering thousands data about the gene expression level of cancer cells. these types of data are the main indicators in survival prediction of cancer. this study highlights the improvement...

Journal: :iranian journal of mathematical chemistry 2013
s. masoum s. ghaheri

we can reach by dna microarray gene expression to such wealth of information with thousands of variables (genes). analysis of this information can show genetic reasons of disease and tumor differences. in this study we try to reduce high-dimensional data by statistical method to select valuable genes with high impact as biomarkers and then classify ovarian tumor based on gene expression data of...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی تهران 1379

در این مطالعه اثر داروهای آدرنرژیک بر بروز ‏‎(expression)‎‏ و گسترش ‏‎(development)‎‏ تولرانس به اثرات بی دردی مرفین در فرمالین تست بررسی شده است. در نهایت چنین نتیجه گیری می شود که مکانیسمهای ش‏‎a2‎‏ آدرنوسپتور ممکن است در بی دردی و تولرانس ناشی از مرفین دخیل باشند.

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد گرمسار - دانشکده زبانهای خارجی 1389

previous studies have aimed at testing a hypothesis but the present study is data-first research in which researcher tries to form a theory from data rather than the use of data to test a hypothesis. this study aims at exploring teachers perceptions of the strengths and weaknesses of the current syllabus for college preparatory course. eight experienced teachers were selected to collect data du...

Journal: :Southeast Europe Journal of Soft Computing 2013

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زبانهای خارجی 1393

the purpose of this study was to examine the english language needs of medical students at tehran university of medical sciences . analysis of the needs took place for three groups: 320 undergraduate students, 30 postgraduate students and 20 university instructors. a triangulation approach to collect data was used in which a combination of the quantitative (using the questionnaires) and qualita...

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