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Search Results: 1 - 10 of 19583 matches for " Ali Akbar Nasr Esfahani "
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A Prevalence Study of Hearing Loss among Primary School Children in the South East of Iran
Aqeel Absalan,Ibrahim Pirasteh,Gholam Ali Dashti Khavidaki,Azam Asemi rad,Ali Akbar Nasr Esfahani,Mohammad Hussein Nilforoush
International Journal of Otolaryngology , 2013, DOI: 10.1155/2013/138935
Abstract: Hearing impairment substantially affects child’s ability to normally acquire the spoken language. Such negative effects create problems for the child not only in terms of communication but also in terms of achievement in school as well as social and emotional growth. The aim of this research is to study the prevalence of hearing disorders and its relationship to age and gender among primary school students of Zahedan, Iran. In this cross-sectional and descriptive analytical study, 1500 students from elementary schools were screened for hearing loss. The selection of samples was performed using multistage sampling method. Primary information was obtained through direct observation, otoscopy, and audiometric and tympanometric screenings. Data was obtained and analyzed via ANOVA test. Statistical analysis showed a significant correlation between the age and the prevalence of middle ear abnormal function. Conductive hearing loss in males and females was 8.8% and 7.1%, respectively. In addition, 1% and 0.7% of male and female students, respectively, suffered from sensorineural hearing loss. Results indicated that 20.2% of students of elementary schools in Zahedan needed medical treatment for their problems. Therefore, it is recommended that the hearing screening of school-age children should be included in annual school health programs in this region. 1. Introduction Hearing loss of even 15 dBHL can create hearing disability in children and consequently impairment in their mental growth [1–3]. Due to the occurrence of secreted middle ear otitis during a critical period (when the senses are emerging and adapting to the environment), these impairments can create various disabilities in children. These disabilities can cause behavioral complications in six functional areas: mental maturity, perception, speech and speaking, cognition and general intelligence, academic achievement, and interpersonal behaviors [4, 5]. One of the other impairments is unilateral hearing loss (UHL) that, if not examined, is normally detected later because one of the ears is healthy. For the impact of unilateral hearing loss on children’s academic achievement, it was found that 30% of children with unilateral deafness lag at least 1.2 years behind their normal peers in terms of academic achievement [6]. Unilateral hearing loss has remarkable effects on academic achievement, language development, and children’s auditory perception [7]. By considering the unpredictable difficulties, the best way to identify them would be individual assessment of children at risk. Due to the lack of
Treatment of Recalcitrant Electrical Burn Ulcer with Application of Topical Trichloroacetic Acid and Autologous Cultured Fibroblast
Mohammad Ali Nilforoushzadeh, Mohhamad Hossein Nasr Esfahani, Mehr Afarin Fesharaki, Amir Hossein Siadat and Elaheh HaftBaradaran
Cell & Tissue Transplantation & Therapy , 2012, DOI: 10.4137/CTTT.S3779
Abstract: In this case report, we present a case of deep, partial-thickness, recalcitrant electrical burn ulcer that was healed completely using tissue debridement with topical 50% TCA (Trichloroacetic acid) and application of autologous fibroblasts. To the best of our knowledge, this is the first time that the application of topical TCA along with autologous fibroblasts have been used for the treatment of an electrical burn ulcer with a satisfactory result.
Treatment of atrophic cutaneous leishmaniasis scar using autologous fibroblasts and keratinocytes (a case report and literature review):
Mohammad Ali Nilforoushzadeh,Mohhamad Hossein Nasr Esfahani,Mehr Afarin Fesharaki,Amir Hossein Siadat
Journal of Research in Medical Sciences , 2010,
Abstract: In this case report we present a case of wide, deep, atrophic cutaneous leishmaniasis scar that was improved significantly using injection of autologus fibroblasts, dermabrasion and dressing with autologus keratinocytes and fibroblasts. To our best knowledge, it is the first time that separate cultured fibroblasts and keratinocytes are used in conjunction with dermabrasion for treatment of cutaneous leishmaniasis scar. We have started this procedure as an extensive research on patients with leishmaniasis scar that will be reported in the future.
Effect of β-Mercaptoethanol with and without BSO (DL-Buthionine Sulfoximine) on Resumption of Meiosis, in vitro Maturation and Embryo Development of Immature Mouse Oocytes
Hossein Eimani,Fatemeh Hassani,Seyed Ali Haerie-Rohani,Mohammad Hossein Nasr Esfahani
Cell Journal , 2006,
Abstract: Introduction: The purpose of this study was to evaluated the effect of β-mercaptoethanol on resumption of meiosis, in vitro maturation of immature mouse oocytes and resulting embryo development with and without BSO (DL-Buthionine sulfoximine). Material and Methods: Germinal vasicle (GV) were recovered from 6-8 weeks old NMRI ovaries and cultured in maturation medium in MEMα supplemented with 7.5IU/ml hCG, 100mIU/ml rhFSH, 5% FCS (control group) and adding 100μm β-mercaptoethanol (group 1) or with 5mM BSO + 100μm β-mercaptoethanol (group 2) for 24h. The matured oocytes then were fertilized and cultured for 5 days. Fertilization and development were accomplished in T6 medium. Results: The percentage of GV oocytes reaching to metaphase I (or undergo GVBD) were 78.5%, 85%, 86% in control group, group 1 and group 2 respectively, that no significant difference was detected between groups. The proportion of oocytes that progressed to the metaphase II (MII) stage was minimum within 5mM BSO group (group 2) and maximum within β-mercaptoetanol group (group 1) with significant difference comparing with control and each other (P≤0.05). The percentage of embryos reaching to morula stage within β-mercaptoetanol group was significantly higher than the control group (5% and 12.2% respectively). None of oocytes treated with BSO could pass the 8 cell stage. Conclusion: β-mercaptoetanol enhances IVM and improves embryo development. While adding BSO into the maturation medium even with β-mercaptoetanol decreases maturation and declines the embryo development.
Seroepidemiology of Hepatitis E Virus in Iranian Soldiers
Gholam Ali Ghorbani,Seyed Moayed Alavian,Ali Akbar Esfahani,Shervin Assari
Hepatitis Monthly , 2007,
Abstract: Background and Aims: Hepatitis E virus (HEV) is recognized as a common cause of epidemic and sporadic viral hepatitis. HEV outbreaks have been documented in some military forces in the world. The aim of this study was to evaluate anti-HEV antibody in Iranian soldiers.Methods: In a cross-sectional study, 800 soldiers were selected by simple random sampling in Tehran, Iran in 2006. A questionnaire of demographic data was completed and blood samples were obtained for anti-HEV IgG & IgM antibody. Data were analyzed using student t-test and chi-square using SPSS 12. Results: All soldiers were male and their mean age was 19 ± 1.2. Education level in 553 (69.1%) of them was high school diploma or higher. Anti-HEV IgG antibody was positive in only 9 (1.1%) of them and IgM was negative in all soldiers. Conclusions: Approximately 98% of soldiers were at risk for HEV infection and before discovering an effective vaccine, preparation of healthy drinking water and personal hygiene education should be considered for prevention of hepatitis E infection.
Mystique in Arabic Poetics: An Inquiry into Cultural Dominant  [PDF]
Yassir Mohammed Nasr Ali
Advances in Literary Study (ALS) , 2015, DOI: 10.4236/als.2015.31002
Abstract:
This paper argues that the paucity of innovative work in Arabic critical tradition is a ramification of an aesthetic of conformity to the dominant patterns in Arabia. The preoccupation with specific aspects in poetics does not contribute to the framing of intellectual debates past and present, but discloses an exclusionary discourse with a narrow scheme of knowledge. Such a limitation in epistemology is symptomatic of a wider one at the level of formative ideals. The present article attempts to unfold the crisis in this epistemology by problematizing the mainstream poetics of culture and seeking new possibilities of reflection beyond the edges of definition.
Comparative pathogenesity of Fusarium species on some of the potato cultivars
Mehdi Nasr Esfahani
Plant Breeding and Seed Science , 2011, DOI: 10.2478/v10129-011-0027-9
Abstract: The fusarium dry rot is one of the most important diseases of potato tubers causing considerable damages during the storage. Resistance sources are one of the fundamental methods in prevention and disease control. This study details the pathogenesity and assessment of susceptibility of commercially acceptable potato Cultivars to dry rot causing by Fusarium sulphureum, F. solani and F. oxysporum under similar conditions includings. inoculum, mehtod of inoculation, temperature, relative humidity and light. The results indicated that though the similar conditions were applied, the tubers of varieties reacted with differing levels of resistance to the species causing the disease. It was found that F. sulphureum was the most aggressive one, then fallowed by F. solani as far as the disease development is concerned and were independent. F. oxysporum did not cause considerable damages. In these expriments the commerical potato varieties were Seuminar, Rustica, clivastave, Dital, Escort, Monalisa, Marfona, Mondial, Aniona, Deraga, Asta, Hidram, Melisa, Moren, Mariyana, Pashandi, Frasco, Alva, Ceaser, Asva, Aula, Sandara, Marijke, Folva, Tiva, Fregate, Baraka, Aida, Diamant, Arnica, Panda, Atlas, Erigo, Volkano, Famosa, Carlita, Korrigan, Casmos, Assour, Cosima, Ariane, Desiree and saturna, in which started with most susceptible ones fallowed to resistance ones at end to F. sulphureum. The variety saturna were the most resistant one to the all tested species in these expriments.
Electrostatics in wormhole spacetimes
B. Nasr Esfahani
Iranian Journal of Physics Research , 2003,
Abstract: Regarding the static form of Maxwell’s equations in wormhole background geometry, we obtain a generalised form of Laplace’s equation. Because of peculiar geometry of the throat, lines of force that enter the wormhole at one mouth and emerge from the other, initially converge and then diverge. So, for a remote observer the wormhole can act as a charge distribution that modifies the potential, mainly around the throat. Here, the exact solutions for the potential are obtained and by considering an equivalent dielectric media and finding polarisation charge distributions the effect of the wormhole geometry on the potential is justified. It is assumed that real sources of the potential are distributed far from the throat and do not contribute to the stress-energy tensor of the wormhole.
Present status of Fusarium dry rot of potato tubers in Isfahan (Iran)
M. NASR ESFAHANI
Indian Phytopathology , 2012,
Abstract: Fusarium dry rot of potato tubers was found to be the main disease in Isfahan (Feraydan) Iran. Four Fusarium spp. were isolated from dry rot lesions of potato tubers collected from 50 farms in 17 production localities. F. sulphureum and F. solani were the predominant species. Three species (F. sulphureum, F. solani and F. oxysporum) caused typical dry lesions in inoculated potato tubers, whereas F. chlamydosporum was confined to sunken or dimple-like necrotic lesions. F. sulphureum was the most aggressive species followed by F. solani and the least one, F. oxysporum. The pathogenicity tests on four potato varieties showed little correlation between the rank order of susceptibility of the potato varieties to the two main pathogens.
Spin entanglement of two spin-1/2 particles in a classical gravitational field
Bahram Nasr Esfahani
Mathematics , 2010, DOI: 10.1088/1751-8113/43/45/455305
Abstract: The effect of a classical gravitational field on the spin entanglement of a system of two spin-1/2 particles moving in the curved spacetime is discussed. The system is described by a two-particle Gaussian wave packet represented in the momentum space and both the acceleration of the system and the curvature of the spacetime cause to produce a Wigner rotation acting on the wave packet as it moves along a path in the curved spacetime. By calculating the reduced density operator at a final point, we focus on the spin entanglement of the system. In a spherically symmetric and static gravitational field, for example a charged black hole, there can be particular paths on which the Wigner rotation is trivial and so the initial reduced density matrix remains intact. This causes the spin entanglement to be invariant during the motion. The spin entanglement descends to zero by increasing the angular velocity of the mean centroid of the system as well increasing the proper time during which the centroid moves on its circular path around the center.
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