LabID-base/OpenAlex-Afillation huggingface dataset:
On the loss of orthogonality in low-synchronization variants of reorthogonalized block classical Gram-Schmidt
Year: 2025
Type: article
Language: en
Topic: Matrix Theory and Algorithms
Authors and affiliations:
raw_author_name: Erin Carson
raw_affiliation_strings: Department of Numerical Mathematics, Faculty of Mathematics and Physics, Charles University, Sokolovská 49/83, 186 75 Praha 8, Czechia
raw_author_name: Kathryn Lund
raw_affiliation_strings: Computational Mathematics Theme, Building R71, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire, OX11 0QX, United Kingdom
raw_author_name: Yuxin Ma
raw_affiliation_strings: Department of Numerical Mathematics, Faculty of Mathematics and Physics, Charles University, Sokolovská 49/83, 186 75 Praha 8, Czechia
raw_author_name: Eda Oktay
raw_affiliation_strings: Computational Methods in Systems and Control Theory, Max Planck Institute for Dynamics of Complex Technical Systems, Sandtorstr. 1, 39106 Magdeburg, Germany
GABAB receptor blockade in the dentate gyrus restores glutamatergic synaptic plasticity and hippocampus dependent memory in an AD-like rat model
Year: 2025
Type: article
Language: en
Topic: Neuroscience and Neuropharmacology Research
Authors and affiliations:
raw_author_name: Jianzhou Chen
raw_affiliation_strings: Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji, 133002, China
Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji 133002, China
raw_author_name: Yuening Tian
raw_affiliation_strings: Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji, 133002, China
Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji 133002, China
raw_author_name: Linping Wang
raw_affiliation_strings: Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji, 133002, China
Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji 133002, China
raw_author_name: Zihan Zhang
raw_affiliation_strings: Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji, 133002, China
Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji 133002, China
raw_author_name: Qinghua Jin
raw_affiliation_strings: Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji, 133002, China; Key Laboratory of Anti-Aging and Translational Medicine of Jilin Province, Yanbian University, Yanji, 133002, China; Key Laboratory of Cellular Function and Pharmacology of Jilin Province, Yanbian University, Yanji, China. Electronic address: yqinghua@ybu.edu.cn
Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji 133002, China; Key Laboratory of Anti-Aging and Translational Medicine of Jilin Province, Yanbian University, Yanji 133002, China; Key Laboratory of Cellular Function and Pharmacology of Jilin Province, Yanbian University, Yanji, China. Electronic address: yqinghua@ybu.edu.cn
raw_author_name: Bin Xiao
raw_affiliation_strings: Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji, 133002, China; Key Laboratory of Anti-Aging and Translational Medicine of Jilin Province, Yanbian University, Yanji, 133002, China; Key Laboratory of Cellular Function and Pharmacology of Jilin Province, Yanbian University, Yanji, China. Electronic address: xiaobin@ybu.edu.cn
Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji 133002, China; Key Laboratory of Anti-Aging and Translational Medicine of Jilin Province, Yanbian University, Yanji 133002, China; Key Laboratory of Cellular Function and Pharmacology of Jilin Province, Yanbian University, Yanji, China. Electronic address: xiaobin@ybu.edu.cn
Recent advances in metal nanomaterials for glucose oxidase biosensors: A comprehensive review
Year: 2025
Type: article
Language: en
Topic: Advanced Nanomaterials in Catalysis
Authors and affiliations:
raw_author_name: Kenan Xiong
raw_affiliation_strings: School of Basic Medical Sciences, Guangdong Pharmaceutical University, Guangzhou 510006, China
raw_author_name: Jiaming Liu
raw_affiliation_strings: School of Basic Medical Sciences, Guangdong Pharmaceutical University, Guangzhou 510006, China
raw_author_name: Shitong Liu
raw_affiliation_strings: School of Basic Medical Sciences, Guangdong Pharmaceutical University, Guangzhou 510006, China
raw_author_name: Haipeng Zhang
raw_affiliation_strings: School of Basic Medical Sciences, Guangdong Pharmaceutical University, Guangzhou 510006, China
raw_author_name: Rongxin Zhang
raw_affiliation_strings: School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, China
raw_author_name: Binbin Sheng
raw_affiliation_strings: School of Basic Medical Sciences, Guangdong Pharmaceutical University, Guangzhou 510006, China
GC–MS analysis, molecular docking, and pharmacokinetic studies on Water Snowflake plant (Nymphoides indica L.) root extracts for compounds with antiepileptic potential
Year: 2025
Type: article
Language: en
Topic: Glycogen Storage Diseases and Myoclonus
Authors and affiliations:
raw_author_name: Banaja Panigrahi
raw_affiliation_strings: School of Biotechnology, Centurion University of Technology and Management (CUTM), Bhubaneswar, Odisha, 752050, India
raw_author_name: Ashutosh Nayak
raw_affiliation_strings: School of Biotechnology, Centurion University of Technology and Management (CUTM), Bhubaneswar, Odisha, 752050, India
raw_author_name: Satish Kanhar
raw_affiliation_strings: School of Pharmacy and Life Sciences, Centurion University of Technology and Management (CUTM), Bhubaneswar, Odisha, 752050, India
raw_author_name: Ashirbad Nanda
raw_affiliation_strings: School of Pharmacy and Life Sciences, Centurion University of Technology and Management (CUTM), Bhubaneswar, Odisha, 752050, India
raw_author_name: Satyabrata Nanda
raw_affiliation_strings: School of Biotechnology, Centurion University of Technology and Management (CUTM), Bhubaneswar, Odisha, 752050, India
Triazolo-pyridine derivatives: Synthesis, characterization and biological evaluation
Year: 2025
Type: article
Language: en
Topic: Click Chemistry and Applications
Authors and affiliations:
raw_author_name: Macchindra B. Kadam
raw_affiliation_strings: Department of Chemistry, Vivekanand Arts, Sardar Dalipsingh Commerce and Science College, Samarth Nagar, Chhatrapati Sambhajinagar, Maharashtra, India
raw_author_name: Samin A. Shaikh
raw_affiliation_strings: Department of Chemistry, Kr. V. N. Naik Shikshan Prasarak Sanstha’s Arts, Commerce and Science College, Canada Corner, Nashik, Savitribai Phule Pune University, Maharashtra, India
raw_author_name: Santosh S. Chobe
raw_affiliation_strings: Research Centre of Chemistry, M.G. V’s Loknete Vyankatrao Hiray, Arts, Science and Commerce College, Panchavati, Nashik, Savitribai Phule Pune University, Maharashtra, India
raw_author_name: Rohan J. Meshram
raw_affiliation_strings: Bioinformatics Centre, Savitribai Phule Pune University, Pune, Maharashtra, India
raw_author_name: Rahul A. More
raw_affiliation_strings: Department of Microbiology, Dayanand Science College, Latur, Swami Ramanand Teerth Marathwada University, Maharashtra, India
raw_author_name: Balaji R. Madje
raw_affiliation_strings: Department of Chemistry, Vasantarao Naik Mahavidyalaya, Airport Road, Cidco, Chhatrapati Sambhajinagar, Maharashtra, India
raw_author_name: Sayujjata R. Vaidya
raw_affiliation_strings: Department of Chemistry, Vivekanand Arts, Sardar Dalipsingh Commerce and Science College, Samarth Nagar, Chhatrapati Sambhajinagar, Maharashtra, India
A method to reveal the reaction order for reactants in complex electrocatalytic reactions: formic acid/formate oxidation on Au(1 1 1) as the model system
Year: 2025
Type: article
Language: en
Topic: Electrocatalysts for Energy Conversion
Authors and affiliations:
raw_author_name: Zhen Wei
raw_affiliation_strings: Forensic Science Institute, China People’s Police University, Langfang 065000, China
Hefei National Research Center for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
raw_author_name: Wei Chen
raw_affiliation_strings: GRG Metrology & Test Group Co., Ltd, Guangzhou 511400, China
raw_author_name: Meng-Ke Zhang
raw_affiliation_strings: Hefei National Research Center for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
raw_author_name: Li-Guo Cao
raw_affiliation_strings: Hefei National Research Center for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
raw_author_name: Jun Cai
raw_affiliation_strings: Hefei National Research Center for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
raw_author_name: Yan-Xia Chen
raw_affiliation_strings: Hefei National Research Center for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
Design, synthesis, and biological assessment of novel 1,2,3-triazole-coumarin-N-phenylacetamide hybrids linked via 5-chloro-1-pentyne: Experimental and computational insights
Year: 2025
Type: article
Language: en
Topic: Click Chemistry and Applications
Authors and affiliations:
raw_author_name: Mohammed A. Al-Salehi
raw_affiliation_strings: Department of Chemistry, Sana’a University, Yemen
P. G. Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar 388120, Gujarat, India
raw_author_name: Priyanka Dalwadi
raw_affiliation_strings: Department of Applied and Interdisciplinary Sciences, IICISST, Sardar Patel University, Vallabh Vidyanagar 388120, Gujarat, India
raw_author_name: Mohammed D. Alalawy
raw_affiliation_strings: Department of Physics, Faculty of Education & Science, Albaydha University, Yemen
raw_author_name: Arumugam M. Kumar
raw_affiliation_strings: Center for Molecular and Nanomedical Sciences, Sathyabama Institute of Science and Technology, Chennai-600119, Tamil Nadu, India
raw_author_name: Shana Balachandran
raw_affiliation_strings: Center for Molecular and Nanomedical Sciences, Sathyabama Institute of Science and Technology, Chennai-600119, Tamil Nadu, India
raw_author_name: Anju Kunjadiya
raw_affiliation_strings: Department of Applied and Interdisciplinary Sciences, IICISST, Sardar Patel University, Vallabh Vidyanagar 388120, Gujarat, India
raw_author_name: Hitendra M. Patel
raw_affiliation_strings: P. G. Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar 388120, Gujarat, India
raw_author_name: Jignesh H. Trivedi
raw_affiliation_strings: P. G. Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar 388120, Gujarat, India
On certain root number 1 cases of the cube sum problem
Year: 2025
Type: article
Language: en
Topic: Analytic Number Theory Research
Authors and affiliations:
raw_author_name: Shamik Das
raw_affiliation_strings: Department of Mathematics and Statistics, IIT Kanpur, India
raw_author_name: Somnath Jha
raw_affiliation_strings: Department of Mathematics and Statistics, IIT Kanpur, India
Rational design of a mesoporous COF with tailored porosity for synergistic extraction and analysis of organic ultraviolet stabilizers
Year: 2025
Type: article
Language: en
Topic: Covalent Organic Framework Applications
Authors and affiliations:
raw_author_name: Shuang Li
raw_affiliation_strings: School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China
raw_author_name: Yiling Zhu
raw_affiliation_strings: School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China
raw_author_name: Zhen Ren
raw_affiliation_strings: School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China
raw_author_name: Chunying Zheng
raw_affiliation_strings: School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China
raw_author_name: Jinhua Li
raw_affiliation_strings: Coastal Zone Ecological Environment Monitoring Technology and Equipment Shandong Engineering Research Center, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; The Institute for Advanced Study, Shaoxing University, Shaoxing 312000, China
raw_author_name: Xiaoyan Wang
raw_affiliation_strings: School of Pharmacy, Binzhou Medical University, Yantai 264003, China
raw_author_name: Jiping Ma
raw_affiliation_strings: School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China. Electronic address: majiping2012@163.com
raw_author_name: Lingxin Chen
raw_affiliation_strings: Coastal Zone Ecological Environment Monitoring Technology and Equipment Shandong Engineering Research Center, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China. Electronic address: lxchen@yic.ac.cn
A GLP-1 receptor agonist semaglutide attenuates cardiac microvascular injury in HFD/STZ-induced diabetic mice
Year: 2025
Type: article
Language: en
Topic: Diabetes Treatment and Management
Authors and affiliations:
raw_author_name: Xinye Wang
raw_affiliation_strings: Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, PR China
Department of Otolaryngology-Head and Neck Surgery& Sleep Medicine Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, PR China
Department of Cardiology, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, 250021, P.R. China
raw_author_name: Xiaoting Wang
raw_affiliation_strings: Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, PR China
Department of Otolaryngology-Head and Neck Surgery& Sleep Medicine Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, PR China
Department of Otolaryngology-Head and Neck Surgery& Sleep Medicine Center, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, 250021, P.R. China
raw_author_name: Hong Zhuang
raw_affiliation_strings: Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, PR China
Department of Cardiology, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, 250021, P.R. China
raw_author_name: Guangzhen Lu
raw_affiliation_strings: Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, PR China
Department of Cardiology, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, 250021, P.R. China
raw_author_name: Gang Zhao
raw_affiliation_strings: Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, PR China; JiNan Key Laboratory of Cardiovascular Disease, Jinan, Shandong, 250021, PR China. Electronic address: zg000507@163.com
Department of Cardiology, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, 250021, P.R. China; JiNan key laboratory of cardiovascular disease, Jinan, Shandong, 250021, P.R. China. Electronic address: zg000507@163.com
Enhancing privacy-preserving data synthesis utility with two-stage diffusion models
Year: 2025
Type: article
Language: en
Topic: Privacy-Preserving Technologies in Data
Authors and affiliations:
raw_author_name: Yinchi Ge
raw_affiliation_strings: State Key Laboratory of Complex & Critical Software Environment, Beihang University, China
raw_author_name: Hui Zhang
raw_affiliation_strings: State Key Laboratory of Complex & Critical Software Environment, Beihang University, China
raw_author_name: Haijun Yang
raw_affiliation_strings: School of Economics and Management, Beihang University, China
raw_author_name: Haohang Sun
raw_affiliation_strings: State Key Laboratory of Complex & Critical Software Environment, Beihang University, China
Solvent-free, mechanochemical synthesis of chromone-based Schiff bases: A green approach to bioactive heterocycles
Year: 2025
Type: article
Language: en
Topic: Synthesis of Organic Compounds
Authors and affiliations:
raw_author_name: PS Rashmi
raw_affiliation_strings: Department of Chemistry, Presidency University, Yelahanka, Bengaluru 560064, India
raw_author_name: S Supriya
raw_affiliation_strings: Centre for Nanomaterials & Displays, BMS College of Engineering, Bull temple road, Bengaluru 560019, India
Department of Chemistry, BMS College of Engineering, Bull temple road, Bengaluru 560019, India
raw_author_name: S Ranganatha
raw_affiliation_strings: Department of Chemistry, Presidency University, Yelahanka, Bengaluru 560064, India
raw_author_name: Dileep Ramakrishna
raw_affiliation_strings: Department d Chemistry, RNS Institute of Technology, Channasandra, Bengaluru 560098, India
Facile synthesis of novel alginate derivatives with thermoresponsive gelation behaviour
Year: 2025
Type: article
Language: en
Topic: Supramolecular Self-Assembly in Materials
Authors and affiliations:
raw_author_name: Priyanka Chavda
raw_affiliation_strings: Tarsadia Institute of Chemical Science, Uka Tarsadia University, Surat 394350, Gujarat, India
raw_author_name: Dharmesh R. Chejara
raw_affiliation_strings: Tarsadia Institute of Chemical Science, Uka Tarsadia University, Surat 394350, Gujarat, India
raw_author_name: Tusharkumar Menapara
raw_affiliation_strings: Department of Chemical Sciences, P. D Patel Institute of Applied Sciences, Charotar University of Science and Technology, Changa 388421, Gujarat India
Q-learning for linear closed-loop Stackelberg strategy with one-step memory
Year: 2025
Type: article
Language: en
Topic: Adaptive Dynamic Programming Control
Authors and affiliations:
raw_author_name: Hongdan Li
raw_affiliation_strings: College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao, Shandong, PR China
raw_author_name: Juanjuan Xu
raw_affiliation_strings: School of Control Science and Engineering, Shandong University, Jinan, Shandong, PR China
raw_author_name: Huanshui Zhang
raw_affiliation_strings: College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao, Shandong, PR China
School of Control Science and Engineering, Shandong University, Jinan, Shandong, PR China
Fluorinated nanoporous organic polymer with pendant methoxyl groups for effective greenhouse gas sulfur hexafluoride separation
Year: 2025
Type: article
Language: en
Topic: Covalent Organic Framework Applications
Authors and affiliations:
raw_author_name: Gen Li
raw_affiliation_strings: School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
School of Materials Science and Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China
raw_author_name: Chen Jiang
raw_affiliation_strings: School of Materials Science and Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China
raw_author_name: Zhongcheng Ma
raw_affiliation_strings: School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
raw_author_name: Xiaoting Deng
raw_affiliation_strings: College of Food and Chemical Engineering, Shaoyang University, Shaoyang 422000, China
Graphitic carbon nitride / zinc phthalocyanine composites for enhanced solar photodegradation of Rhodamine B
Year: 2025
Type: article
Language: en
Topic: Advanced Photocatalysis Techniques
Authors and affiliations:
raw_author_name: Ichraf Chérif
raw_affiliation_strings: Higher Institute of Education and Continuous Training of Tunis, Virtual University of Tunis, Tunis, Tunisia
Physico-Chemistry Laboratory for Mineral Materials and their Applications, National Center for Research in Materials Sciences (CNRSM), Borj Cedria Technopole, 8027 Soliman, Tunisia
raw_author_name: Rached Ousji
raw_affiliation_strings: Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, School of Chemistry and Chemical Engineering, Hainan University, Haikou 570228, China
raw_author_name: Wahida Ltaief
raw_affiliation_strings: Laboratory of Materials for Energy and Environment, and Modelling, Faculty of Science, University of Sfax, Soukra Road km 4 PB, 1171-3038 Sfax, Tunisia
raw_author_name: Yanan Gao
raw_affiliation_strings: Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, School of Chemistry and Chemical Engineering, Hainan University, Haikou 570228, China
raw_author_name: Sabrine Dridi
raw_affiliation_strings: Faculty of Science of Tunis, University of Tunis El Manar, Tunis 1002, Tunisia
Laboratory of Analytical Chemistry, Higher Institute of Education and Continuing Training (ISEFC), Bardo 2019, Tunisia
raw_author_name: Mounir Ferhi
raw_affiliation_strings: Physico-Chemistry Laboratory for Mineral Materials and their Applications, National Center for Research in Materials Sciences (CNRSM), Borj Cedria Technopole, 8027 Soliman, Tunisia
Discrete element method analysis of cutter forces and cutter tooth wear in cutter suction dredgers
Year: 2025
Type: article
Language: en
Topic: Environmental and Sediment Control
Authors and affiliations:
raw_author_name: Yaowei Hu
raw_affiliation_strings: School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan, 430063, PR China
raw_author_name: Pan Jiang
raw_affiliation_strings: School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan, 430063, PR China
raw_author_name: Chenghui Cao
raw_affiliation_strings: School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan, 430063, PR China
raw_author_name: Hang Li
raw_affiliation_strings: Wuhan University of Technology, Wuhan, 430063, PR China
The association between traffic-related air pollution and risk of non-reassuring fetal heart rate in newborns at birth
Year: 2025
Type: article
Language: en
Topic: Air Quality and Health Impacts
Authors and affiliations:
raw_author_name: Hossein Rezaei
raw_affiliation_strings: Non-communicable Disease Research Center, Department of Environmental Health, School of Public Health, Sabzevar University of Medical Sciences, Sabzevar, Iran
raw_author_name: Zeinab Sadat Alavizadeh
raw_affiliation_strings: Department of Midwifery, School of Nursing and Midwifery, Sabzevar University of Medical Sciences, Sabzevar, Iran
raw_author_name: Hadi Lotfi
raw_affiliation_strings: Department of Bacteriology, School of Medicine, Sabzevar University of Medical Sciences, Sabzevar, Iran
raw_author_name: Mina Ghalenovi
raw_affiliation_strings: Department of Midwifery, School of Nursing and Midwifery, Sabzevar University of Medical Sciences, Sabzevar, Iran
raw_author_name: Moslem Lari Najafi
raw_affiliation_strings: Pharmaceutical Sciences and Cosmetic Products Research Center, Kerman University of Medical Sciences, Kerman, Iran. Electronic address: moslem.l@yahoo.com
Pharmaceutical Sciences and Cosmetic Products Research Center, Kerman University of Medical Sciences, Kerman, Iran. Electronic address: m_miri87@yahoo.com
raw_author_name: Mohammad Miri
raw_affiliation_strings: Non-communicable Disease Research Center, Department of Environmental Health, School of Public Health, Sabzevar University of Medical Sciences, Sabzevar, Iran. Electronic address: m_miri87@yahoo.com
Non-communicable Disease Research Center, Department of Environmental Health, School of Public Health, Sabzevar University of Medical Sciences, Sabzevar, Iran. Electronic address: moslem.l@yahoo.com