oalib

OALib Journal期刊

ISSN: 2333-9721

费用:99美元

投稿

时间不限

2017 ( 29 )

2016 ( 47 )

2015 ( 206 )

2014 ( 273 )

自定义范围…

匹配条件: “Seyed Mehdi Hashemi” ,找到相关结果约5206条。
列表显示的所有文章,均可免费获取
第1页/共5206条
每页显示
Control of Three Stored Product Beetles with Artemisia haussknechtii (Boiss) (Asteraceae) Essential Oil
Seyed Mehdi Hashemi,Seyed Ali Safavi
Ecologia Balkanica , 2012,
Abstract: Fumigant toxicity of the essential oil of aerial parts from Artemisia haussknechtii (Boiss) (Asteraceae) was investigated against the cowpea weevil Callosobruchus maculatus (Fab.), the rice weevil Sitophilus oryzae (L.), and the red flour beetle Tribolium castaneum (Herbst). Dry ground plants were subjected to hydro distillation using a Clevenger type apparatus and the chemical composition of the volatile oil was studied by gas chromatography mass spectrometry (GC MS). The major components of the oil were camphor (29.24%), 1, 8 cineol (27.62%), yomogi alcohol (5.23%), and camphene (4.80%). The essential oil in same concentrations was assayed against (1 7 days old) adults of insect species and percentage mortality was recorded after 24, 48, and 72 h exposure times. LC50 values were varied between 19.84 and 103.59 μL L-1 air, depending on insect species and exposure time. Callosobruchus maculatus was more susceptible than other species. These results suggested that A. haussknechtii oil might have potential as a control agent against C. maculatus, S. oryzae and T. castaneum.
Chemical Constituents and Toxicity of Essential Oils of Oriental Arborvitae, Platycladus orientalis (L.) Franco, against Three Stored-Product Beetles Componentes Químicos y Toxicidad de Aceites Esenciales de Tuya Oriental, Platycladus orientalis (L.) Franco, contra Tres Escarabajos de Productos Almacenados
Seyed Mehdi Hashemi,Seyed Ali Safavi
Chilean Journal of Agricultural Research , 2012,
Abstract: Plant secondary metabolites play an important role in plant-insect interactions and therefore such compounds may have insecticidal or biological activity against insects. Fumigant toxicity of essential oils of leaves and fruits from oriental arborvitae (Platycladus orientalis (L.) Franco) (Cupressaceae) was investigated against adults of cowpea weevil (Callosobruchus maculatus Fab.), rice weevil (Sitophilus oryzae L.), and red flour beetle (Tribolium castaneum Herbst). Fresh leaves and fruits were subjected to hydrodistillation using a Clevenger-type apparatus and the chemical composition of the volatile oils was studied by gas chromatography-mass spectrometry (GC-MS). Twenty-six compounds (92.9%) and 23 constituents (97.8%) were identified in the leaf and the fruit oils, respectively. The major components of both leaves and fruits oils were α-pinene (35.2%, 50.7%), α-cedrol (14.6%, 6.9%) and Δ-3-carene (6.3%, 13.8%), respectively. Both oils in the same concentration were tested for their fumigant toxicity on each species. Results showed that leaf oils were more toxic than fruit oils against three species of insects. Callosobruchus maculatus was more susceptible than S. oryzae and T. castaneum. LC510 values of the leaf and the fruit oils at 24 h were estimated 6.06 and 9.24 μL L1 air for C. maculatus, 18.22 and 21.56 μL L-1 air for S. oryzae, and 32.07 and 36.58 μL L4 air for T. castaneum, respectively. These results suggested that P. orientalis oils may have potential as a control agent against C. maculatus, S. oryzae, and T. castaneum. Los metabolitos secundarios de las plantas juegan un papel importante en las interacciones planta-insecto, y por lo tanto pueden tener actividad insecticida o biológica en los insectos. La toxicidad fumigante de los aceites esenciales de hojas y frutos del árbol oriental de la vida (Platycladus orientalis (L.) Franco) (Cupressaceae) fue investigada contra adultos de gorgojo del guisante (Callosobruchus maculatus Fab.), gorgojo del arroz (Sitophilus oryzae L.), y escarabajo rojo de la harina (Tribolium castaneum Herbst). Las hojas frescas y las frutas fueron sometidas a hidrodestilación utilizando un aparato tipo Clevenger y la composición química de los aceites volátiles se estudió por cromatografía de gas-espectrometría de masa (GC-MS). Se identificaron 26 (92,9%) y 23 compuestos (97,8%) en los aceites de hoja y de frutos, respectivamente. Los componentes principales de los aceites de hojas y frutos fueron α-pineno (35,2%, 50,7%), α-cedrol (14,6%, 6,9%) y Δ-3-careno (6,3%, 13,8%), respectivamente. Ambos aceites fueron
Opium withdrawal and some blood biochemical factors in addicts' individuals  [PDF]
Mehdi Mahmoodi, Seyed-Mostafa Hosseini-Zijoud, Javad Hosseini, Ahmadreza Sayyadi, Mohammadreza Hajizadeh, Gholamhossein Hassanshahi, Behrooz Hashemi
Advances in Biological Chemistry (ABC) , 2012, DOI: 10.4236/abc.2012.22020
Abstract: Objective: One of the common misinterpretation be- liefs in some societies (especially eastern communities) is the using of opium can reduce serum glucose and lipids. Opium is a derivative from a plant family called Papaveracea and contains almost 80 types of alkaloids. Drug addiction causes physiological dependency and its withdrawal lead to some disorders. The aim of this study was to determine the effects of opium consumption and its withdrawal on some blood biochemical factors in addicted people. Methods: We enrolled fifty-six opium addicted people according to the especial criteria to this study. Biochemical blood parameter levels such as fasting blood sugar (FBS), urea, Creatinine (Cr), Aspartate transaminase (AST), Alanine transaminase (ALT) and Alkaline phosphatase (ALP) enzymes levels were measured and urine analysis was also performed before and 3 months after withdrawal. Data were analyzed by using SPSS software version 18 and a P < 0.05 was considered as significant. Results: our finding showed that opium withdrawal reduces FBS and increases AST but these changes were not significant. Nevertheless opium withdrawal significantly increased blood urea level (P < 0.0001). We didn’t find any significant difference in Cr, ALP, AST and Urea specific gravity (SG). Conclusion: According to the results of the current study we can concluded that opium increases FBS, which is in contrast to the most previous studies and withdrawal has opposite effects.
Frequency of reported cases of Brucellosis to province health center from public and private sectors in Semnan 2006-2007
Shahin Kamal,Seyed Mehdi Sadat Hashemi,Mohammad Nasaji,Esmaeel Moshiri
Koomesh , 2009,
Abstract: Introduction: Brucellosis as a zoonosis is still a public health problem in many countries such as Iran.To perform preventive, control and eradication policies about the disease, we need the exactepidemiologic information and patterns of brucellosis in our country. In this study, we invstiagatedfrequency of reported cases of Brucellosis to province health center from public and private sectors inSemnan during 2006-2007Materials and Methods: In this descriptive study, we only enrolled the patients who hadbrucellosis in 2006-7 and there was a record of their disease in the public health centers of Semnanincluding Sorkheh, Mehdishahr and Shahmirzad. A checklist was prepared for the patients and thedata analyzed by computer .Results: The findings showed that only 26 out of 62 (41.9%) patients with brucellosis had a diseaserecord in the health center of Semnan province. Private laboratories, educational hospitals, generalpractitioner and specialist physicians’ surgeries reported only 7.6, 20, 18.2 and 50% of their diagnosedbrucellosis cases to the health center of Semnan province, respectively. Three patients with brucellosiswho were diagnosed in non- educational hospitals had no a disease record in the health center ofSemnan province. Meanwhile, 93.7% of the cases were diagnosed in one of the public heath centershad a disease record in the heath center of Semnan province.Conclusion: These results showed therapeutic and diagnostic centers, except public heath centers,had no enough attention for reporting of brucellosis cases to Semnan province public health center.Therefore, there is no exact information about the number of brucellosis cases in the province and itmakes some difficulties about preventing and control of the disease .
The Use of Critical Thinking in Social Science Textbooks of High School: A Field Study of Fars Province in Iran
Seyed Ahmad Hashemi
International Journal of Instruction , 2011,
Abstract: This study aims at investigating the use of critical thinking in high school social science textbooks based on Fars Province teachers' attitudes in order to present a model for textbook development. To achieve this goal, the use of the following skills in the social science textbooks was analyzed: reasoning, questioning, assessment of examples and statements, group work, interpretation, true judgment about issues, analysis and evaluation, logicality, and explicitness. It is a field study which was conducted in several high schools of Fars Province in Iran. The population of this study included 568 social science teachers. The sample was selected based on the stratified random sampling procedure so that 153 teachers participated in this study. The data were collected using a forty-four-item questionnaire based on Likert-scale, which was developed and validated by the researcher himself and some experts. The reliability coefficient was also estimated as 0.86. The data were analyzed through descriptive statistics (frequency, percentage, standard deviation, and coefficient of variations) and inferential statistics (Chi-square and Kruskal-Wallis Non-parametric tests). The result showed that the teachers of the Social Studies Textbook evaluated assessment of examples and statements, and analysis and evaluation skills as not satisfactory respectively. They evaluated the other skills as fairly satisfactory. Teachers of Sociology Textbook 1 evaluated explicitness, assessment of examples and statements, analysis and evaluation, and interpretation skills as not satisfactory respectively. They also evaluated other skills as fairly satisfactory. Teachers of Sociology Textbook 2 evaluated explicitness as not satisfactory, logicality as satisfactory, and other skills as fairly satisfactory. Therefore it is possible to rank order the social science textbooks of high school as satisfactory and not satisfactory with regard to the use of critical thinking. In other words, Sociology Textbook 2, Social Studies Textbook, and Sociology Textbook 1 were ordered on a continuum of satisfaction from satisfactory to unsatisfactory, respectively.
Estimates of Genetic and Phenotype Parameters for Milk Production in Iran Holstein-Friesian Cows
Ali Hashemi,Mehdi Nayebpoor
Research Journal of Biological Sciences , 2012,
Abstract: Heritability, repeatability and genetic phenotypic correlations among milk yield, fat yield and fat percentage were estimated using an animal model and 19855 records of 10225 Holstein-Friesian cows enrolled in the Iran, Natural Resources Research center of W. Azarbaijan, Urmia, between 1995 and 2005. Heritabilities for milk yield, fat yield and fat percentage were 0.26, 0.24 and 0.36, respectively and their repeatabilities were 0.31, 0.29 and 0.37, respetively. Genetic correlations of milk yield with fat yield and with fat percentage were 0.96 and -0.29, respectively and correlation of fat yield with fat percentage was -0.06. Phenotypic correlations were 0.96 between milk and fat yields, -0.27 between milk yield and fat percentage and -0.03between fat yield and percentage. It was concluded that these genetic and phenotypic parameter could be used for the genetic evaluation of dairy cattle in Iran.
Comparison the Effects of CUE, IVT, Minnesota and TRIS Extenders on Viability of Spermatozoa in Frozen Semen Obtained from Two and Seven Years Old Male Buffaloes
Ali Hashemi,Mehdi Nayebpoor
Research Journal of Biological Sciences , 2012,
Abstract: Upon the results of this study, mean motility of spermatozoa before and after dilution in different extenders and also sperm concentration were very significantly differ (p< 0.01). Mean percentage of motile sperm of 7 old buffaloes pre-freeze and post-thaw in Cornell and TRIS extenders comparing with IVT and Minnesota extenders in 2 years old buffaloes have very significant difference(p< 0.01). The mean percentage of abnormal and dead spermatozoa with IVT and Minnesota extenders in 2 years old buffaloes comparing with Cornell and TRIS extenders in 7 old buffaloes have very significant difference(p< 0.01). Interactions between ages of buffaloes and extenders type in different parameters were very significant (p< 0.01). But interactions between extenders type and weeks of experiment and also between ages of buffaloes and weeks of experiment and triple interactions were not significant (p>0.05).
Estimates of Genetic and Phenotype Parameters for Milk Production in Iran Holstein-Friesian Cows
Ali Hashemi,Mehdi Nayebpoor
Research Journal of Biological Sciences , 2008,
Abstract: Heritability, repeatability and genetic phenotypic correlations among milk yield, fat yield and fat percentage were estimated using an animal model and 19855 records of 10225 Holstein-Friesian cows enrolled in the Iran, Natural Resources Research center of W. Azarbaijan, Urmia, between 1995 and 2005. Heritabilities for milk yield, fat yield and fat percentage were 0.26, 0.24 and 0.36, respectively and their repeatabilities were 0.31, 0.29 and 0.37, respetively. Genetic correlations of milk yield with fat yield and with fat percentage were 0.96 and -0.29, respectively and correlation of fat yield with fat percentage was -0.06. Phenotypic correlations were 0.96 between milk and fat yields, -0.27 between milk yield and fat percentage and -0.03between fat yield and percentage. It was concluded that these genetic and phenotypic parameter could be used for the genetic evaluation of dairy cattle in Iran.
Comparison the Effects of CUE, IVT, Minnesota and TRIS Extenders on Viability of Spermatozoa in Frozen Semen Obtained from Two and Seven Years Old Male Buffaloes
Ali Hashemi,Mehdi Nayebpoor
Research Journal of Biological Sciences , 2008,
Abstract: Upon the results of this study, mean motility of spermatozoa before and after dilution in different extenders and also sperm concentration were very significantly differ (p< 0.01). Mean percentage of motile sperm of 7 old buffaloes pre-freeze and post-thaw in Cornell and TRIS extenders comparing with IVT and Minnesota extenders in 2 years old buffaloes have very significant difference(p< 0.01). The mean percentage of abnormal and dead spermatozoa with IVT and Minnesota extenders in 2 years old buffaloes comparing with Cornell and TRIS extenders in 7 old buffaloes have very significant difference(p< 0.01). Interactions between ages of buffaloes and extenders type in different parameters were very significant (p< 0.01). But interactions between extenders type and weeks of experiment and also between ages of buffaloes and weeks of experiment and triple interactions were not significant (p>0.05).
Osteoid Osteoma of Proximal Phalanx of the Index Finger of the Right Hand  [PDF]
Seyed Abdolhossein Mehdi Nasab, Mohammad Pipelzadeh
Open Journal of Medical Imaging (OJMI) , 2011, DOI: 10.4236/ojmi.2011.12008
Abstract: Osteoid osteoma is a benign bone forming tumor of the growing skeleton that is most often seen in young men. It represents by pain and radiologic appearance of anidus surrounded by osteosclerosisthat occurs mostly in long bones of the lower extremity. Occurrence of this tumor in the hand is an uncommon condition. We present a 23-year-old man with an osteoid osteoma in the proximal phalanx of the right index finger. The radiological examination showed a lytic lesion with irregular border with a central sclerotic nidus and also sclerotic changes around the lytic lesion and bone expansion in the proximal phalanx of the right index finger. He was suffering from a history of pain and swelling of his finger since 8 months. The pain disappeared after surgical excision of nidus. The patient was pain-free and there was no evidence of recurrence at 15 months follow up.
第1页/共5206条
每页显示


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.