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Search Results: 1 - 10 of 19226 matches for " Ali Akbar Ehsanpour "
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Characterization of seed storage protein patterns of four Iranian Pistachios using SDS-PAGE  [PDF]
Ali Akbar Ehsanpour, Behrokh Shojaie, Fatemeh Rostami
Natural Science (NS) , 2010, DOI: 10.4236/ns.2010.27092
Abstract: We used SDSPAGE to evaluate and characterize the protein patterns of seed storage proteins in four pistachios cultivars (Akbari, Ahmad Aghaei, Fandoghi, and Kaleghouchi). Total protein content of pistachio seeds in all cultivars did not show any significant difference. Results of SDS PAGE pattern of a few protein bands were up regulated whereas some other bands showed down regulation. The identified protein patterns may be used protein marker for pistachio cultivars.
Effect of UV-C Radiation on Drought Tolerance of Alfalfa (Medicago sativa) Callus
Ali Akbar Ehsanpour,Roya Razavizadeh
Pakistan Journal of Biological Sciences , 2005,
Abstract: Water stress and unfavorable climate decrease the growth and development of plant globally. Medicago is a valuable plant as a source of food for animal, foliage and for medicine. Since, Iran is located in a dry area, consequently, the study of plant responses to water stress is important. In this study UV-C radiation was used to induce physiological and genetic changes in alfalfa callus. In vitro grown calluses of M. sativa were exposed to UV-C for 0,15, 30 and 60 min and then, were transferred to MS medium containing 0, 2, 5, 10, 20 and 30% PEG. All explants were kept in the dark in the culture room. Calluses tolerate to osmotic stress were selected according to fresh weight. Results showed that radiation of UV-C for 60 min increased the osmotic tolerance and decreased the effect of drought stress.
Plant Regeneration from Cell Suspension Culture of Potato(Solanum tuberosum L.)
Firozeh Torabi,Ahmad Majad,Ali Akbar Ehsanpour
Pakistan Journal of Biological Sciences , 2008,
Abstract: In the present study, for callus production leaf and stem segments of potato cultivar White Desiree were cultured on MS medium supplemented with 2,4-D, NAA and Kinetin (callus production medium). Calli then were transferred in the same liquid medium for cell suspension production. In the next step cell suspensions were transferred back to the callus production medium. Finally, calli derived from cell suspension were cultured on 6 different shoot initiation media (S1-S6). However, on S6 medium with combination of GA3 and BAP more than 80% of the calli produced shoot buds and shoots. Fully grown shoots then were rooted and produced whole plants. Chromosome and morphological analysis showed no somaclonal variation among regenerated plants.
Metal ion–binding properties of the L-aspartic acid and tartaric acid, a coparative investigation. How can be increased the dosage of mineral absorption in the body  [PDF]
Seyed Ali Akbar Sajadi
Advances in Bioscience and Biotechnology (ABB) , 2010, DOI: 10.4236/abb.2010.14047
Abstract: A comparative research has been developed for acidity and stability constants of M(TTA)1 and M(Asp)2 complexes which have been determined by potentiometric pH titration. Depending on metal ion–binding properties, vital differences in building complex were observed. The present study shows that in M(TTA) complexes, metal ions are coordinated to the carboxyl groups, but in M(Asp) some metal ions are able to build macrochelate over amine group. Hence, the following intermolecular and as a result independent concentration equilibrium between an open–isomer M(Asp)op and a closed–isomer M(Asp)cl, has to be considered cl op. The amounts are reported. The results mentioned above demonstrate that for some M(Asp) complexes the stability constants is also largely determined by the affinity of metal ions for amine group. This leads to a kind of selectivity of metal ions and transfer them via building complexes with the aspartate. The result of this effect is a higher dosage-absorption of minerals in body. Based on the sort of metal ions, the drug-therapy can be different. For heavy metal ions this building complex helps the absorption and filtration of the blood plasma, and consequently the excursion of heavy metal ions takes place. This is an important method in microdialysis. Other metal ions such as the complexes can be considered as mineral carriers. These complexes in certain conditions (PH–range) can release the minerals in body.
A comparative investigation of interaction between metal ions with L-methionene and related compounds such as alanine, leucine, valine, and glycine in aqueous solution  [PDF]
Seyed Ali Akbar Sajadi
Advances in Bioscience and Biotechnology (ABB) , 2010, DOI: 10.4236/abb.2010.1109
Abstract: The acidity and stability constants of M-L (M: M2+; L: Met, L-methionine) complexes, determined by potentiometric pH titrations, were used to make a comparative investigation. The stability constants of the 1:1 complexes formed between M2+ and L–, were determined by potentiometric pH titration in aqueous solution (I = 0.1 M, NaNO3, 25°C). The order of the stability constants was reported. It is shown that regarding to M ion – binding properties, vital differences on complex bilding were considered. It is demonstrated that in M-L complexes, M ion is coordinated to the carboxyl group, is also able to bild macrochelate over amine group. The aforementioned results demonstrate that for M (Met) complex, the stability constants are also largely determined by the affinity of Cu ion for amino group. It is indicated that this additional interaction with amino groups can influence the character of some amino acid complexes in biological systems.
Bacteremia with Cutaneous Nodules, Due to Pseudomonas Aeruginosa  [PDF]
Ali Akbar Heydari, Maryam Mojtabavi
Advances in Infectious Diseases (AID) , 2011, DOI: 10.4236/aid.2011.12004
Abstract: Pseudomonas aeruginosa bacteremia rarely occurs in non-immunocompromised adults and can be difficult to be treated. We report a case of 35-year-old woman who presented with respiratory distress, fever and skin lesions. There was pleural effusion in chest radiograph, and CT scan of thorax showed necrotizing pneumonia and loculated empyema. Among the cultures of blood, empyema, sputum and the skin nodules aspirates, all were positive for Pseudomonas aeruginosa. The patient was treated with ciprofloxacin, amikacin and then pleural decortications. Laboratory tests failed to reveal any immunological deficits. After a period of 21 days of antibiotic therapy, the patient was discharged from hospital with a good condition.
Patient and Graft Survival of Kidney Allograft Recipients With Minimal Hepatitis C Virus Infection: A Case-Control Study
Heshmatollah Shahbazian,Eskandar Hajiani,Ali Ehsanpour
Urology Journal , 2008,
Abstract: Introduction: The impact of pretransplant hepatitis C virus (HCV) infection on the outcome of kidney transplantation is controversial. This study was designed to determine the impact of pretransplant minimal HCV infection on the patient and graft survival at a single center in southwest of Iran. Materials and Methods: We designed a historical cohort study on 337 kidney transplant recipients and selected 35 patients with HCV infection and a histological activity index score less than 4 (minimal HCV infection). A group of kidney recipients with negative anti-HCV antibody were compared with the anti-HCV-positive patients in terms of acute allograft rejection, graft loss, mortality, causes of death, and patient and graft survival. The controls were matched for age, sex, donor source, pretransplant dialysis duration, and panel reactive antibodies test. All of the participants had a follow-up period of at least 5 years. Results: There were no significant differences in terms of early and late acute allograft rejection episodes between the groups. Although patient and graft survival rates were lower in HCV-positive patients at 2 and 5 years, the differences between the two groups were not significant. The main causes of death among patients with and without HCV infection were sepsis and cardiovascular events, respectively. Conclusion: Our findings suggest that pretransplant minimal HCV infection had no detrimental effect on the short-term patient and graft survival. However, we suggest that kidney transplant recipients with minimal HCV infection be monitored for severe systemic bacterial infections.
Akbar Ali
International Journal of Economics Business and Management Studies , 2013,
Abstract: The purpose of writing this article is to clearly differentiate between the concept of management which performs the just maintenance job and of the leadership which is an innovative term perceived as more effective and needed. Current scholarly literature on the topic has thoroughly been investigated which strongly supported the hypothesis that a leader is better than a manager. Mintzberg (1973; 1975), Kotter (1990) and Covey (2003) emphasized the requirement to develop the leaders than the managers in the organizations. Even the managers already working and performing efficiently can also develop and converted into leaders by organizing appropriate training and mentoring for them. The lucky organizations and leaders are those who have intrinsically embraced this paradigm shift from managed to leadership and religiously following the required course of action towards bright future.
The Crucial Role of Leadership in Organizations: A Review of Literature
Akbar Ali
International Journal of Independent Research Studies , 2012,
Abstract: What defines leadership? Executives ask this question every time they choose a new leader or train their current leaders. Organizations must understand the fundamentals of leadership before making decisions about their leadership. Leaders are not created overnight. Becoming an effective leader involves considerable time and effort to hone the necessary skills and abilities. Training is considered as a key to develop leaders, however understanding the concept of leadership is vital for leader’s development. The aim of this paper is to study the in-depth context of leadership and its significance in organization effectiveness. Concept of paradigm shift has emphasized that volunteers administrator must serve as a focal point for leadership. A comprehensive review of current literature is used to develop the ground for this paper. This paper significantly contributes towardsthe literature of leadership by conceptualized role and effectiveness of leadership in organizations.
Significance of Paradigm Shift from “Management to Leadership” – A Review of Literature
Akbar Ali
International Journal of Academic Research in Business and Social Sciences , 2012,
Abstract: The purpose of writing this paper was to establish the significance of Paradigm shift from traditional and old management concept towards the very innovative concept of leadership. Researches of very eminent scholars and contemporary leader were analyzed to understand the very need of this unavoidable shift. Now some organization or individual if is found slag to understand and implement this Paradigm shift of a ‘Manager to a Leader’, shall certainly bear the consequences of backwardness thus being lacking in core business. Because latest literature has termed a manager just a maintainer performing a routine job but a leader is a charismatic person who has the solution of each of the organizational, administrative or technical issue. Every manager now has to learn some requisite competencies to transform him into a leader. A manager after going through this article will not only well understand the significance to adopt this Paradigm shift but shall also learn the basic concept and ingredients of becoming a contemporary leader. This is not need of every individual but the organization as well as of the country.
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