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Search Results: 1 - 10 of 170961 matches for " Jamal-e-Din Mahdi Nejad "
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The Role of Water in Persian Gardens  [PDF]
Jamal-e-Din Mahdi Nejad, Hamidreza Azemati, Esmaeil Zarghami, Ali Sadeghi Habib Abad
Open Journal of Ecology (OJE) , 2017, DOI: 10.4236/oje.2017.71004
Abstract: The role of water in the formation of the first human habitats is a response to a biological need. But when above a need, home building and constructing residential complexes have a cultural meaning, architecture is emerged and water in human life has an artistic place and it is originated from the creativity of the artists and architects. Understanding the concept of water in architecture is understanding the concept of water architecture. Understanding the physical laws of water behavior is our emotions to the interaction of water and most importantly the role and allegory and its relationship with human life. Water is a paradoxical metaphor and along with soil, fire and air, consists of the four comprising elements of the universe. If someone asks us to define water, we say it is a colorless liquid which is the source of life, but is it really the definition of water in architecture and only in terms of the physical aspect, it is an interface between man and architecture? To answer this question, first we examine the available resources in this field and desk studies about the architectural spirit and then examine the water hidden side and the way it affects humans and architecture through descriptive-analytical method, so by contemplating in them, the question can also be answered. From the beginning, water was a vital element not only for the body but for the soul.
Effect of the Activated factor VII on Prognostic and Reducing the Bleeding in Patients with Cerebral Hemorrhage
R. Bavrasad,N. Sharaf al-Din Zadeh,S.E.M. Nejad,N.M. Nasab
International Journal of Pharmacology , 2010,
Abstract: This study was accompanied due to high mortality and morbidity in these patients trying to find more useful treatment. A total 54 patient with ICH Next to stroke referred to Ahwaz Golestan hospital from Jul 2008 to 2009 were selected. Patients were randomly assigned to receive a single intravenous dose of 40 μg kg -1 of rFVIIa or placebo. The performance by a clinical neurologist and based on the international ranking (Rankin's scale) on the first day of hospitalization and 90 days after discharge was evaluated. There was no significant difference in mean arterial blood pressure between placebo and patient groups. Percentage increase in both the second day of bleeding volume in the patient and placebo groups was 2.35 and 0.35%, respectively. The total difference between the first day and third day in the patient and placebo group was -7.76- and -2.99%, respectively. Patients with MAP value of more than 120 mmHg, showed a significant response to rFVIIa treatment. Recombinant activated factor VII has the potential to limit or even halt the progression of bleeding in brain hemorrhagic patients that would otherwise place growing pressure on the brain. As such, these data suggest that the use of rFVIIa holds promise in the setting of non-surgical intracranial bleeding. Whether this usage will have a positive impact on the neurological outcome lies in a future prospective clinical trial whose planning is underway.
Developing a Risk-Based Approach for Optimizing Human Reliability Assessment in an Offshore Operation  [PDF]
Ahmad BahooToroody, Mohammad Mahdi Abaiee, Reza Gholamnia, Mohammad Bahoo Torody, Nastaran Hekmat Nejad
Open Journal of Safety Science and Technology (OJSST) , 2016, DOI: 10.4236/ojsst.2016.61003
Abstract: Human error plays a pivotal rule in all aspects of engineering activities such as operation, maintenance, design, inspection and installation. Industries are faced up to various significant human errors and consequently irrecoverable loss each year, but still there is a lack of heeds to qualify as well as quantify such errors. This paper tries to estimate the probability of failure in lifting of light structures in sea by considering human errors. To do this, a strong qualifying tool such as Functional Resonance Analysis Method (FRAM) is applied to develop high risk accident scenario by considering non-linear socio-technical interaction in system. Afterwards, human error probability is calculated for each activity using the Success Likelihood Index Method (SLIM) based on resonance that is carried out in FRAM network. Then Event Tree (ET) is conducted to assess consequences. The present study is aimed to interpret the importance of attentions to qualitative methods in implementing quantitative risk analyses to consider human error in calculation. The final outcome depicts that considering human error in the process of risk assessment will result in more accuracy and reliability in final Risk Probability Number (RPN). The developed methodology has been applied to a case study of an offshore installation.
Aerobic Granulation in Sequencing Batch Reactor (SBR) Treating Saline Wastewater
Ensieh Taheri,Mahdi Hajian nejad,Mohammad Mahdi Amin,Hossein Farrokhzadeh
Iranian Journal of Health and Environment , 2012,
Abstract: Normal 0 false false false EN-US X-NONE AR-SA MicrosoftInternetExplorer4 Background and Objectives: Aerobic sludge granulation is an advanced phenomenonin which its mechanisms have not been understood. Granulation can be a promising and novel biological wastewater treatment technology to eliminate organic and inorganic materials in future. High salinity is a parameter which leads to plasmolisatian and reduction of the cell activity. This could be a problem for biological treatment of the saline wastewater. Aerobic granule was formed and investigated during this study. Materials and Methods: This study is an intervention study on the treatment of wastewater with 500-10000 mg/L concentration of NaCl by sequencing batch reactor. Asynthesized wastewater including nutrient required for microorganism's growth was prepared. Input and output pH and EC were measured. Range of pH and DO varied between 7-8, and 2-5 mg/L, respectively. SEM technology was used to identify graduals properties.Results: In terms of color, granules divided into two groups of light brown and black. Granule ranged in 3-7mm with the sediment velocity of 0.9-1.35 m/s and density of 32-60 g/L.Properties of granules were varied. Filamentous bacteria and fungi were dominant in some granules. However non filamentous bacteria were dominant in others. EDX analysis indicated the presence of Ca and PO4.Conclusion: Granules with non filamentous bacterial were compact and settled faster. Presence of different concentrations of salinity leaded to plasmolysis of the bacterial cells and increased concentrations of EPS in the system as a result of which granulation accelerated. /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:Arial; mso-bidi-theme-font:minor-bidi;}
Comparison of Aerobic and Lime Stabilization Methods for Evaluation of Sewage Sludge Reuse
Akram Jamal,Nafise Norieh,Mahdi Farzadkia
Journal of Environmental Science and Technology , 2011,
Abstract: The main objective of this research was the examination of effectiveness of lime dose in order to stabilization of sewage sludge and comparison of lime stabilized sludge reuse with aerobic digested sludge reuse. Lime and aerobic stabilization were carried out in two laboratory reactor with 40 L capacity. The sludge samples were taken from the return activated sludge line in four times. Lime was used at various ratios and the mixture was stabilized for 30 days. During the lime hydrated stabilization pH values were significantly increased from 7 to 12.5. Also, aerobic digester was loaded with raw sludge and mixed by sufficient amount of air for 30 days. The results indicate that the lime addition with the dose of 0.4 g Ca(OH)2 g-1 DS could completely inactive a high amount of fecal coliforms within 1 h and in all of the times was lower than 1000 MPN g-1 DS after 30 days (p<0.01). But after 30 days, fecal coliforms density in aerobic digested sludge could not achieve to Class A of USEPA category. In two stabilization methods, density of viable helminths ova could not reduce to 1 ova/4 g DS and could not achieve to Class A of USEPA category. Therefore, these methods could be achieved the reduction requirement set by USEPA for class B (p<0.01) and the products could be well used as a landfill cover or a soil conditioner. Finally, our study confirmed that lime sludge stabilization has a higher hygienic effect and more cost-effective than aerobic stabilization, specially, when such sludge is used to dung and modify acid soils.
Aqueous Extract of Saffron (Crocus sativus) Increases Brain Dopamine and Glutamate Concentrations in Rats  [PDF]
Hosseinali Ettehadi, Seyedeh Nargesolsadat Mojabi, Mina Ranjbaran, Jamal Shams, Hedayat Sahraei, Mahdi Hedayati, Farzad Asefi
Journal of Behavioral and Brain Science (JBBS) , 2013, DOI: 10.4236/jbbs.2013.33031
Abstract: Recent studies involving human and animal models have identified that saffron helps in the improvement of depression. Antidepressants are known to function in part by increasing brain serotonin, norepinephrine and dopamine concentrations. Therefore, to identify the cellular and molecular mechanism(s) underlying this property of saffron, we measured changes in rat brain dopamine, serotonin, norepinephrine and glutamate concentrations after administration of varying doses of an aqueous extract of saffron stigma. Male Wistar rats (250 ± 30 g) were administered a single dose of saffron extract (5, 25, 50, 100, 150, and 250 mg/kg, i.p.), fluoxetine (10 mg/kg, i.p.), and/or desipramine (50 mg/kg, i.p.) and were sacrificed 30 min later. Brains were removed, homogenized, and centrifuged at 4?C. The supernatant was used for subsequent neurotransmitter detection by ELISA. Our results indicated that the aqueous extract of saffron (50, 100, 150 and 250 mg/kg, i.p.) increased brain dopamine concentration in a dose-dependent manner compared with saline. In addition, the brain glutamate concentration increased in response to the highest dose of the extract (250 mg/kg, i.p.). Interestingly, the extract had no effect on brain serotonin or norepinephrine concentration. Our findings show that the aqueous extract of saffron contains an active component that can trigger production of important neurotransmitters in brain, namely, dopamine and glutamate. In addition, these results provide a cellular basis for reports concerning the antidepressant properties of saffron extract in humans and animals.
Nonparametric Simulation of Signal Transduction Networks with Semi-Synchronized Update
Isar Nassiri, Ali Masoudi-Nejad, Mahdi Jalili, Ali Moeini
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0039643
Abstract: Simulating signal transduction in cellular signaling networks provides predictions of network dynamics by quantifying the changes in concentration and activity-level of the individual proteins. Since numerical values of kinetic parameters might be difficult to obtain, it is imperative to develop non-parametric approaches that combine the connectivity of a network with the response of individual proteins to signals which travel through the network. The activity levels of signaling proteins computed through existing non-parametric modeling tools do not show significant correlations with the observed values in experimental results. In this work we developed a non-parametric computational framework to describe the profile of the evolving process and the time course of the proportion of active form of molecules in the signal transduction networks. The model is also capable of incorporating perturbations. The model was validated on four signaling networks showing that it can effectively uncover the activity levels and trends of response during signal transduction process.
A New Technique in saving Fingerprint with low volume by using Chaos Game and Fractal Theory
Mahdi Jampour,Mohammad M. Javidi,Adel Soleymani Nejad,Maryam Ashourzadeh
International Journal of Interactive Multimedia and Artificial Intelligence , 2010,
Abstract: Fingerprint is one of the simplest and most reliable biometric features of human for identification. In this study by using fractal theory and by the assistance of Chaos Game a new fractal is made from fingerprint. While making the new fractal by using Chaos Game mechanism some parameters, which can be used in identification process, can be deciphered. For this purpose, a fractal is made for each fingerprint, we save 10 parameters for every fingerprint, which have necessary information for identity, as said before. So we save 10 decimal parameters with 0.02 accuracy instead of saving the picture of a fingerprint or some parts of it. Now we improve the great volume of fingerprint pictures by using this model which employs fractal for knowing the personality
A study on organizational culture, structure and information technology as three KM enablers: A case study in five Iranian medical and healthcare research centers
Ali Khalghani,Hamideh Reshadatjoo,Mahdi Iran-nejad-parizi
Management Science Letters , 2013,
Abstract: This study investigates organizational structure, culture, and information technology as knowledge management (KM) infrastructural capabilities, and compares their significance and status quo in five medical research centers in Tehran, Iran. Objectives of this research were pursued by employing two statistical methods, regression analysis and Friedman test. Included in the study were 135 people (researchers and support staff) from five medical and healthcare research centers of Tehran. A survey questionnaire including 23 questions was utilized to examine organizational structure, culture and information technology indicators. And another 12 questions examined KM effectiveness. The Friedman test indicated that in terms of their status quo, the three studied KM enablers are at different conditions, with organizational culture having the best (mean rank=1.79) and IT the worst (mean rank=2.14) status. Moreover, it was revealed by regression analysis that organizational structure is believed to have the most significant impact (Beta= 0.397) on the effectiveness of knowledge management initiatives, while information technology gained the least perceived impact (Beta= 0.176).
Case of Cephalic Presentation of Foetus in a Harbour Porpoise Phocoena Phocoena (Cetacea, Phocoenidae), with Notes on Other Aquatic Mammals
P. E. Gol'din
Vestnik Zoologii , 2011, DOI: 10.2478/v10058-011-0030-5
Abstract: A stranded harbour porpoise pregnant with a near-term foetus in cephalic (head) presentation was found. It is the first time when cephalic presentation, now recorded in three odontocete families, is reported for phocoenids. It proved to occur rarely, yet to be more widespread for aquatic mammals than could be expected.
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