508 research outputs found
Regular physical activity postpones age of occurrence of first-ever stroke and improves long-term outcomes
No full textObjective: Few data are available on the associations between the level of pre-stroke physical activity and long-term outcomes in patients with stroke. This study is designed to assess the associations between pre-stroke physical activity and age of first-ever stroke occurrence and long-term outcomes. Methods: Six hundred twenty-four cases with first-ever stroke were recruited from the Mashhad Stroke Incidence Study a prospective population-based cohort in Iran. Data on Physical Activity Level (PAL) were collected retrospectively and were available in 395 cases. According to the PAL values, subjects were classified as inactive (PAL < 1.70) and active (PAL ≥ 1.70). Age at onset of stroke was compared between active and inactive groups. Using logistic model, we assessed association between pre-stroke physical activity and long-term (5-year) mortality, recurrence, disability, and functional dependency rates. We used multiple imputation to analyze missing data. Results: Inactive patients (PAL < 1.70) were more than 6 years younger at their age of first-ever-stroke occurrence (60.7 ± 15.5) than active patients (67.0 ± 13.2; p < 0.001). Patients with PAL< 1.7 also had a greater risk of mortality at 1 year [adjusted odds ratio (aOR) = 2.31; 95%CI: 1.14–4.67, p = 0.02] and 5 years after stroke (aOR = 1.81; 95%CI: 1.05–3.14, p = 0.03) than patients who were more physically active. Recurrence rate, disability, and functional dependency were not statistically different between two groups. Missing data analysis also showed a higher odds of death at one and 5 years for inactive patients. Conclusions: In our cohort, we observed a younger age of stroke and a higher odds of 1- and 5-year mortality among those with less physical activity. This is an important health promotion strategy to encourage people to remain physically active
The Relationship between Family Social Capital and Prosocial Behaviors (Case Study: Yazd University Students) Seyed Reza Javadian Fatemeh Zeydabadi Nezhad
No full textThe Relationship between Family Social Capital and Prosocial Behaviors (Case Study: Yazd University Students) Seyed Reza Javadian[1] , Fatemeh Zeydabadi Nezhad[2] Received: 29/9/2017 Accepted: 2/10/2018 Abstract The purpose of this study was to see the relationship between family social capital and prosocial behaviors in students, because family members play an important role in the re-production and re-distribution of social capital and in strengthening the prosocial behaviors and the sense of altruism in children. The statistical population was all students at Yazd University in 2014-2015. The sample (372 students) was selected through random convenience sampling. Data was collected through Prosocial Tendencies Measure Revised and social capital questionnaire which was developed by the researcher. Data was analyzed by Pearson correlation coefficient, T test and regression. The results showed that students' prosocial behaviors was more than average (M=78.4). The Pearson correlation coefficients of social capital dimensions (intimacy, monitoring, social participation, social norm, effectiveness, environmental trust, institutional trust) and students' prosocial behaviors, are statistically significant. Results also indicate that social norm, environmental trust, social participation, institutional trust and monitoring can explain up to 17 percent of the dependent variable. Keywords: Prosocial Behavior, Altruism, Social Capital, Family, Student [1]. Assistant Professor in Social Work, Social Sciences Department, YazdUniversity, Yazd, Iran. (Corresponding Author). [email protected] [2]. M.A. in Sociology, Yazd University, Yazd, Iran. [email protected]
Melanargia grumi lorestanensis n. ssp. dans le sud-ouest de l'Iran (Lep., Nymphalidae)
No full textMelanargia grumi lorestanensis n. ssp. in S-W Iran (Lep., Nymphalidae). The new entity was discovered by the first author mid june 2000 in the mountain range of the western part of Lorestan. It is distinguished from the nominotypical ssp., on the upper side by a darker pattern, on the hind wings by a larger white postdiscal band and by its quite immaculate underside. This is the first record of M. grumi for Iran.Carbonell Frédéric, Naderi Ali-Reza. Melanargia grumi lorestanensis n. ssp. dans le sud-ouest de l'Iran (Lep., Nymphalidae). In: Bulletin de la Société entomologique de France, volume 112 (4), décembre 2007. p. 454
Melanargia grumi lorestanensis n. ssp. dans le sud-ouest de l'Iran (Lep., Nymphalidae)
No full textMelanargia grumi lorestanensis n. ssp. in S-W Iran (Lep., Nymphalidae). The new entity was discovered by the first author mid june 2000 in the mountain range of the western part of Lorestan. It is distinguished from the nominotypical ssp., on the upper side by a darker pattern, on the hind wings by a larger white postdiscal band and by its quite immaculate underside. This is the first record of M. grumi for Iran.Carbonell Frédéric, Naderi Ali-Reza. Melanargia grumi lorestanensis n. ssp. dans le sud-ouest de l'Iran (Lep., Nymphalidae). In: Bulletin de la Société entomologique de France, volume 112 (4), décembre 2007. p. 454
Author Correction: Prediction of Response to Neoadjuvant Chemoradiotherapy by MRI-Based Machine Learning Texture Analysis in Rectal Cancer Patients (Journal of Gastrointestinal Cancer, (2020), 51, 2, (601-609), 10.1007/s12029-019-00291-0)
No full textThe original version of this article unfortunately contained a mistake. In the author group section, the correct name of the fourth author is �Reza Ghalehtaki.� The authors apologize for this oversight and for any confusion it may have caused. © 2019, Springer Science+Business Media, LLC, part of Springer Nature
Clinicopathological Characteristics of Gastric Cancer in Iranian Patients Referred to Imam Reza Hospital During 2008 to 2017
No full textBackground and Aim: There are a limited number of studies regarding the clinicopathological features of gastric cancer. Here, the clinicopathological features of gastric cancer including tumor type and size, degree of differentiation, tumor operability, and immunohistochemically results of E-cadherin and P53 expression was investigated in Iranian patients.
Methods: This retrospective study was performed on patients who were admitted at Imam Reza Hospital in Tehran-Iran from 2008 to 2017 with a diagnosis of gastric cancer. Required information including age, sex, type of cancer, pathology, and immunohistochemistry (IHC) results and treatment were extracted from the hospital archive.
Results: Out of 264 enrolled patients (with the mean age of 70.03±14.01 years), 180 cases were men. The frequency of intestinal-type, Diffuse-type, lymphoma and GIST tumor were 54.5%, 27.7%, 12.25% and 5.92% respectively. In addition, 67.58% and 13.83% of the tumors were undifferentiated and poorly differentiated respectively.
Surgery was less probable in less differentiated tumors (r=0.582 P=0.001). The surgery rate in GIST, intestinal-type, and Diffuse-type tumors were 100%, 57%, and 14.4%, respectively. IHC results showed that E-cadherin expression was present in 78.6, of which 50.9% were weakly positive (+1). Also, the high expression of P53 was observed in 60.7% of patients.
Conclusion: According to the data, we can conclude that poorly differentiated tumors, decreased expression of E-cadherin, and increased expression of P53 is linked to poor prognosis in Iranian patients with gastric cancer. In this regard, further clinical trials and multicenter studies should be done to evaluate the possible factors for improving the prognosis and survival rates of Iranian patients with gastric cancer.
*Corresponding Author: Shahrokh Iravani; Email: [email protected]
Please cite this article as: Sattartabar B, Nourian M, Samizadeh E, Mehrvar N, Jalaeikhoo H, Mehrvar A, Iravani S. Clinicopathological Characteristics of Gastric Cancer in Iranian Patients Referred to Imam Reza Hospital During 2008 to 2017. Arch Med Lab Sci. 2020;6:1-6 (e18). https://doi.org/10.22037/amls.v6.3330
LCDB 1.0: An Extensive Learning Curves Database for Classification Tasks
No full textThe use of learning curves for decision making in supervised machine learning is standard practice, yet understanding of their behavior is rather limited. To facilitate a deepening of our knowledge, we introduce the Learning Curve Database (LCDB), which contains empirical learning curves of 20 classification algorithms on 246 datasets. One of the LCDB’s unique strength is that it contains all (probabilistic) predictions, which allows for building learning curves of arbitrary metrics. Moreover, it unifies the properties of similar high quality databases in that it (i) defines clean splits between training, validation, and test data, (ii) provides training times, and (iii) provides an API for convenient access (pip install lcdb). We demonstrate the utility of LCDB by analyzing some learning curve phenomena, such as convexity, monotonicity, peaking, and curve shapes. Improving our understanding of these matters is essential for efficient use of learning curves for model selection, speeding up model training, and to determine the value of more training data.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Pattern Recognition and Bioinformatic
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Continuous, stable, and safe organometallic reactions in flow at room temperature assisted by deep eutectic solvents
No full textThis work demonstrates the first continuous, stable, and safe operation of organometallic reactions in flow under ambient conditions with high moisture tolerance and clogging resistance. The addition of deep eutectic solvents (DESs), such as glyceline (choline chloride/glycerol) and reline (choline chloride/urea), overcomes the previous limitations associated with the need for cryogenic conditions (long residence times and high energy requirements) and clogging. The immiscibility of the different solvents leads to a segmented flow where the reactive organic substrates are dispersed in a continuous DES-containing carrier phase. This system provides intimate contact between solvents, favoring the dissolution of lithium species (by-product) into the DES phase, avoiding the clogging under a wide range of conditions. In addition, the microfluidic scale provides excellent heat management (recirculation flow patterns) and a high surface area/volume ratio, enabling safe operation. The benefits of DESs were studied with a selection of two organolithiums and two organomagnesium reagents, and different imine/ketone substrates
Graphene: Microwave Enabled One‐Pot, One‐Step Fabrication and Nitrogen Doping of Holey Graphene Oxide for Catalytic Applications (Small 27/2015)
No full textPeer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/112226/1/smll201570159.pd
Does corruption relieve foreign investors of the burden of taxes and capital controls?
No full textIn a sample of fourteen source countries making bilateral investments in forty five countries, the author finds that taxes, capital controls, and corruption, all have large, statistically significant negative effects on foreign investment. Moreover, there is no robust support in the data for the"efficient grease"hypothesis - that corruption helps attract foreign investment by reducing firms'tax burden and the irritant of capital controls.International Terrorism&Counterterrorism,Capital Markets and Capital Flows,Decentralization,Fiscal&Monetary Policy,Economic Theory&Research,Economic Theory&Research,International Terrorism&Counterterrorism,Governance Indicators,National Governance,Capital Flows
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