Search Results/Filters    

Filters

Year

Banks




Expert Group











Full-Text


Issue Info: 
  • Year: 

    2024
  • Volume: 

    8
  • Issue: 

    3
  • Pages: 

    262-264
Measures: 
  • Citations: 

    0
  • Views: 

    7
  • Downloads: 

    0
Abstract: 

Nutrition support Programs in schools are known as one of the most important and effective tools to improve the nutritional and educational status of children. One of these Programs is the school milk Program, which can have positive effects on the health, education, and economy of the society. In this advocacy paper, solutions are presented to facilitate the continuation of this Program after mentioning the strengths and challenges of this Program.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 7

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Issue Info: 
  • Year: 

    2000
  • Volume: 

    28
  • Issue: 

    5 SUPPL
  • Pages: 

    69-74
Measures: 
  • Citations: 

    1
  • Views: 

    99
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 99

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 1 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Issue Info: 
  • Year: 

    1394
  • Volume: 

    2
Measures: 
  • Views: 

    391
  • Downloads: 

    0
Abstract: 

امروزه طبقه بندی اطلاعات برای استفاده مناسب از آنها به هنگام نیاز امری بسیار مهم و حیاتی است، در این راستا روش های مختلفی برای طبقه بندی معرفی شده است. که هریک به نوبه خود بهبودی را در راستای بهینه سازی اکتشاف و طبقه بندی داده بوجود آورده اند، یکی از روش های مهم در این مقوله، استفاده از شاخص های فضایی است. نظریه اصلی شاخص فضایی که مهمترین نظریه اساسی پرس و جو می باشد، محاسبه نظریه نزدیکی است. معروف ترین ساختار شاخص، درخت R می باشد. استراتژی اصلی درخت R جمع آوری نودهای فضایی چند بعدی با مستطیل حداقل محدوده (MBR) می باشد که کوچکترین نود فضایی داخلی مستطیل باشد. بعد از شاخص بندی، بهینه سازی بازیابی اطلاعات در پایگاه داده فضایی مهم است [2]. از اینرو جهت بررسی بیشتر موضوع، در این مقاله، شاخص فضایی جدید که متعلق به خانواده R+tree می باشد و مفهوم همپوشانی گره ها را حفظ می کند و R++tree نام دارد، بررسی شده است. نتایج این مقاله نشان می دهد که R++tree در دامنه پرس و جو، پرس و جو KNN و پرس و جو Top-k بسیار کارآمدتر ازR*tree  می باشد.

Yearly Impact:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 391

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0
Writer: 

ژیلا-صدیقی

Issue Info: 
  • End Date: 

    فروردین 1379
Measures: 
  • Citations: 

    0
  • Views: 

    360
  • Downloads: 

    0
Keywords: 
Abstract: 

در سال 1376 معاونت بهداشتی وزارت بهداشت، درمان و آموزش پزشکی با همکاری جهاددانشگاهی علوم پزشکی تهران، برنامه غربالگری جمعیتی (Population based mass screening) برای تشخیص زودرس سرطان پستان ازطریق معاینه بالینی پستان را به صورت پایلوت در کشور آغازکردند. گروه موردبررسی در این مطالعه شامل زنان 30 سال و بالاتر بود. فواصل غربالگری یکساله بوده و طول مدت اجرای مطالعه پایلوت، چهار سال تعیین شده بود که بدین ترتیب چهار دوره غربالگری را شامل می شد. مناطق پایلوت شامل سه شهرستان شهرکرد، مبارکه ولنجان بود. علت این گزینش، تصوری بود که مجریان طرح درباره بالابودن پوشش رابطین در شهرهای این مناطق داشتند. این بررسی در سیستم شبکه بهداشتی درمانی این مناطق و با هدف بررسی امکان ادغام این برنامه در سیستم شبکه اجراشد. طبق این برنامه، جمعیت هدف توسط بهورز/ کاردان (سطح اول ارجاع) معاینه شده و موارد مشکوک ازسطح اول به سطح دوم (پزشک عمومی) و از سطح دوم به سطح سوم (پزشک جراح) ارجاع شده است. توصیه به خودآزمایی پستان نیز از وظایف سطح اول بوده است.پزشکان عمومی موظف بوده اند برای تمامی موارد توده دار (Fine Needle Aspiration) FMA انجام دهند. پس از اتمام دو دوره غربالگری (دو سال پس از شروع برنامه) نیاز به ارزیابی برنامه پایلوت مطرح شد. هدف کلی دراین ارزیابی، شامل اندازه گیری شاخص های ارزشیابی برنامه بوده است.

Yearly Impact:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 360

Issue Info: 
  • Year: 

    2010
  • Volume: 

    23
  • Issue: 

    1 (62)
  • Pages: 

    12-20
Measures: 
  • Citations: 

    0
  • Views: 

    789
  • Downloads: 

    0
Abstract: 

Background and Aims: Overlapping of the proximal surfaces of posterior teeth in the panoramic radiography is a major concern. Therefore, an option has been developed in the panoramic unit of Planmeca Promax, namely improved interproximal mode. This mode causes lower horizental angle with the teeth contact region during the unit rotation decreasing overlapping of the panoramic images of the posterior teeth especially premolar teeth. The present study was done to compare the overlapping of posterior teeth using two techniques of improved interproximal panoramic Program and standard panoramic.Materials and Methods: In this diagnostic study, 32 patients requiring panoramic radiographies at their posterior teeth during their routine diagnosis and treatment process with the mean age of 27.3 years were participated. No patients showed crowding of posterior teeth or missed and restored posterior teeth. The participants' panoramic radiographies were randomly taken by two techniques of improved interproximal panoramic and standard panoramic using Planmeca Promax device. The overlapping of the panoramic images was blindly assessed by an oral radiologist. The overlapping in both techniques was reported by frequency and percentage. The comparisons were done by Chi-square test between two techniques and the odds ratio of overlapping was estimated using regression analysis.Results: In standard panoramic techniques, 38.5% (148 contacts of 384 contacts) of the proximal surfaces overlapped while the overlapping of the proximal surfaces was observed in 18.8% (72 contacts of 384 overall contacts) in improved interproximal technique. Significant differences were noted between two techniques regarding overlapping (P<0.001). Also 66.4% and 39.1% of 4-5 teeth contacts overlapped in standard and improved techniques. The values were reported to be 39.1% and 12.5% in contacts of 5-6 teeth and 10.2% and 4.7% in the contacts of 6-7 teeth in both techniques, respectively. The overlapping odds ratio in improved technique as compared to standard techniques was 2.72 more. While the odds ratio of overlapping in the contact regions of 4-5 and 5-6 teeth was 16.4 and 4.61 as compared to the contact region of 6-7 teeth (all: P<0.001). The lower or upper jaw with the patients' mouth side did not significantly influence the overlapping of the proximal surfaces in both panoramic techniques.Conclusion: Under the limitations of this study, improved interproximal panoramic significantly reduced the overlapping of proximal surfaces in the panoramic radiographies of posterior teeth as compared to the standard panoramic technique. Therefore, it can be used to detect proximal caries in the posterior teeth as a diagnostic tool. Using this option may affect other part of panoramic image which should be investigated in other research.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 789

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 12
Issue Info: 
  • Year: 

    2006
  • Volume: 

    4
  • Issue: 

    2
  • Pages: 

    84-87
Measures: 
  • Citations: 

    1
  • Views: 

    656
  • Downloads: 

    304
Abstract: 

Congenital Hypothyroidism (CH) is one of the most preventable causes of mental retardation and can be detected through neonatal screening; it is estimated 1200 CH patients are born in Iran, annually. The aim of this investigation was to provide a report on the outcome and estimate the cost benefit ratio of the screening Program implementation for CH in Iran based on the pilot study.Materials and Methods: The cost of the screening Program for CH for each newborn was based on data gathered from the pilot study of three provinces and the amount then multiplied by the number of births per year. The care cost of mentally retarded individuals is calculated based on the Welfare budget of caring for these people.Results: Total cost of implementation of the neonatal screening Program for CH during the first year is 16, 256, 400, 000 Rials ($ 2, 000, 000). The ratio of the cost of care for the children to the cost of implementation of the screening Program is about 1 to 16 and the ratio of the benefit (cost saving) to the implementation cost is 1 to 15.Conclusion: The neonatal screening Program for CH has a very high potential for implementation in the country. As a result, the implementation of the CH screening Program as the first screening of newborns provides a basis for better understanding and timely detection of CH and other metabolic diseases in Iran.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 656

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 304 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 1 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Writer: 

سارا-سنمار

Issue Info: 
  • End Date: 

    دی 1386
Measures: 
  • Citations: 

    2
  • Views: 

    337
  • Downloads: 

    0
Keywords: 
Abstract: 

Galactosemia is an autosomal recessive metabolic disease. Galactosemia results from mutation in 3 genes but the common mutation is identified in Galactose 1- phosphate uridyl transferase (GALT) gene.G-1-phosphate levels increase in the disease that is detectable in 3-6 day old neonates and the main complication is mental retardation. Methods: We collected data from 24000 newborn babies from Fars Province, Southern Iran. The enzymatic calorimetric test was done on their blood and Red questions from the children's parents. For treatment, free lactose milk or Soya milk have been used for newborn feeding. Findings: The prevalence of Galactosemia in Fars province was 5:24000 in neonates, being more than those reported in White race and Asians. Maximum clinical symptoms before diet in 10 days after birth were vomit and jaundica and maximum clinical symptoms after using diet were sepsis full fontanelle and hepatic failure. Conclusions: The number of familial marriage in children's parents was very high. Consanguineous marriage is a major cause of inheritance of the disease in Iran. Screening should be executed for all of families with a history of Galactosemia in Iran. To the best our knowledge, this is the first large study report from prevalence of Galactosemia in Iran.

Yearly Impact:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 337

Issue Info: 
  • Year: 

    1390
  • Volume: 

    6
  • Issue: 

    2 (پیاپی 22)
  • Pages: 

    50-58
Measures: 
  • Citations: 

    0
  • Views: 

    767
  • Downloads: 

    0
Abstract: 

جنس تمشک Rubus L. متعلق به تیره Rosaceae دارای 750 گونه در جهان می باشد. بین برخی گونه های این جنس مانند R. raddeanus Focke. و R. persicus Boiss. تشابه ریختی فراوانی از نظر صفات جام گل، برگ و گوشوارک برگی دیده می شود که شناسایی آنها را با مشکل مواجه ساخته است. طی بررسی های مختلف مشخص شد که گونه R. raddeanus در فلور ایران، مترادف گونه R. persicus اعلام شده است، در حالی که این گونه در فلور ایرانیکا، روسیه و کتاب رستنی های ایران به عنوان گونه ای مجزا گزارش شده اند. بنابراین این تحقیق به منظور بررسی کارایی صفات دانه گرده و ساختار گلپوش در تعیین روابط تاکسونومیکی این گونه ها، ابتدا 9 نمونه منتسب به گونه R. persicus از رویشگاه های طبیعی مختلف جمع آوری گردید. نتایج مطالعات ریخت شناسی در این تحقیق، نشان دهنده اختلافاتی در نوع گل آذین، شکل خارها، شکل کاسبرگ ها و همچنین تفاوت در الگوی طرح گلپوش و عدم تشابه تزیینات سطح اگزین در گرده ها می باشند. لذا با توجه به نتایج بدست آمده پیشنهاد می شود دو گونه R. persicus و R. raddeanus مطابق نظر فلور ایرانیکا، فلور روسیه و کتاب رستنی های ایران به صورت دو گونه مجزا اعلام شوند.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 767

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Issue Info: 
  • Year: 

    2024
  • Volume: 

    55
  • Issue: 

    2
  • Pages: 

    165-183
Measures: 
  • Citations: 

    0
  • Views: 

    26
  • Downloads: 

    10
Abstract: 

Pores affect functionally graded materials. Further characteristics may be added if pores expand from the surface to the interior. Functionally graded porous beam (FGPB) bending response is analyzed using a specific shear shape function that accounts for both uniform and uneven porosity distributions. Power law changes the material characteristics of FGPBs with uniform and uneven porosity distributions along length and thickness. In order to determine the maximum transverse deflections, axial stresses, transverse shear stresses, and normal stresses in simply-supported and clamped-clamped beams, numerical calculations are performed with various gradation exponents, aspect ratios (L/h), and porosity levels (both even and uneven). The obtained results are compared with earlier investigations and justified.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 26

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 10 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Issue Info: 
  • Year: 

    2000
  • Volume: 

    12
  • Issue: 

    1-2
  • Pages: 

    19-26
Measures: 
  • Citations: 

    0
  • Views: 

    1337
  • Downloads: 

    0
Abstract: 

Background & Purpose: In previous studies success rates of BLRree. and R& R surgeries on. basic exotropic patients have been reported 43-79% and 82% respectively. The aim of ibis study was comparison of these two techniques of surgeons on our XT. patients at Imarn Hossein Medical Center.Method & Pantients: After filling up personal and family characteristics form, complete eye examinations (B.C.V.A- Cycloretfaction- EOM- XT at 6m and 33 cm - slit and funds exam) were performed. Measurements were repeated at least 1.5 months after surgeries. Because of lower vision in R&R group, 5 pd more surgery were done to stabilize the deviated eye after operation. The patients were matched (range of age, sex, S.E of reflection, sergeon, followup). The results were interpretated by T, paired T and x and fisher tests.Results: 26 patients were in BLRree. and 21 pts. Were in R&R group. Their ages were 9±7 and 19±9 years, preop xT were 29±8 and 36±17 which decreased to 5±7 and 5±10 pd respectively. Success rates of these techniques were not different statistically. In BLRree. Group 69%,ortho (+8 pd) 27% under and 4% over and In. P&R group 81% ortho, 14% under and 5% over were seen.Conclusion: In our study these two methods of surgeries had no different statistically. More success rate in R&R group (81%) was due to both effects of 5 pd more operation and stabilizing effect of MR Rec.against it's direct antagonist muscle recession.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 1337

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
litScript
telegram sharing button
whatsapp sharing button
linkedin sharing button
twitter sharing button
email sharing button
email sharing button
email sharing button
sharethis sharing button