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MULTI- DIMENSIONAL LAPLACE TRANSFORM FOR NON - HOMOGENOUS PARTIAL DIFFERENTIAL EQUATIONS
A. Aghili Aghili,A. Motahhari
Journal of Global Research in Mathematical Archives , 2013,
Abstract: In this work, we implement multi-dimensional Laplace transform method for solving the non – homogenous second order partial differential equations. The results reveal that the Laplace transforms method is very convenient and effective. Key words and Phrases: Two-dimensional Laplace transforms; Heat equation; second order linear differential equations; Wave equation. Mathematics Subject Classification2010: Primary 44A30, Secondary 35L05
Effect of Silica Nanoparticles on the Curing Kinetics of Epoxy Vinyl Ester Resin
Aghili A.,Arabli V.
Proceedings of the International Conference Nanomaterials : Applications and Properties , 2013,
Abstract: A nanocomposite was synthesized using silica nanoparticles (SN) and Epoxy Vinyl Ester Resin (VE671). Nanoparticles were dispersed in the mixture by ultrasonic equipment to prevent the agglomeration. Transmission electron microscopy (TEM) was used to investigate the dispersion of the silica nanoparticles in the mixture. Non-isothermal differential scanning calorimetry (DSC) technique was used to study the cure kinetics of VE671 resin with and without adding silica nanoparticles. The activation energy (Ea) was determined by using Kissinger and Ozawa equations. The Ea values of curing for VE671 / 4% SN system showed a decrease with respect to the neat resin. It means that there is a catalytic effect of silica nanoparticles in the cure reaction. A dynamic kinetic model was obtained to predict the degree of cure and cure rate of resin. The results showed a good agreement between the model and the experimental data for different heating rates. The char yields increased with the addition of 4% of SN to the epoxy resin and improved the polymer flame retardancy and thermal resistance at high temperatures.
Preparation of PMMA/CNT Microcellular Foam Using Supercritical CO2
Aghili A.,Ahmadi M.,Pourdalir H.
Proceedings of the International Conference Nanomaterials : Applications and Properties , 2013,
Abstract: Controlling the cell size and cell density of microcellular foams has an important influence on polymeric foams properties. By using nanoparticles in polymers and supercritical fluids as foaming agent, it is possible to create microcellular foams with controlled morphology. In this article surface modified carbon nanotube (CNT) was used to prepare Polymethylmethacrylate (PMMA) nanocomposite. Dry ice was used as the source of supercritical CO2 in foam production. Microcellular foams were prepared form PMMA/CNT nanocomposites. The cell morphology was observed by scanning electron microscopy (SEM) and the cell size and cell density were calculated via image analysis. The effect of CNT on cell size and cell density of foams was investigated.
CELECOXIB - Chemoradiation therapy for reducing mucositis and other acute side effects in advance head and neck carcinoma
Mojahed MM,Aghili M,Kazemian A,Farhan F
Tehran University Medical Journal , 2009,
Abstract: "nBackground: Chemo-radiotherapy-induced oral mucositis represents a therapeutic challenge frequently encountered in cancer patients. This side effect causes significant morbidity and may delay or interruption of treatment plan, cyclo-oxygenase 2 (COX2) is an inducible enzyme primarily expressed in inflamed and tumoral tissues. COX-2 inhibitors have shown promise to reduce chemoradiation induce toxicities. We conducted a phase III, randomized double blind clinical trial to evaluate the toxicity and efficacy of celecoxib, a selective COX2 inhibitor, administered concurrently with chemoradiation for locally advanced head and neck cancer. Here in we report the first report about the role of COX-2 inhibitor in acute toxicicities. "nMethods: Patients with stage III/IV (locally advance) head and neck carcinoma who referred to department of radiation-oncology were eligible. Patients were treated with chemotherapy with cisplatin concurrently with radiation (60-70Gy). Celecoxib (100mg qid) was started at the first day of radiotherapy and was given for a total of 8 weeks. Acute toxicities were evaluated every week by WHO scale. "nResults: One hundred twenty two patients were enrolled into the study, (61 patients for each group). In repeated mesurment analysis of variance there is a significant difference in the time of onset of grade II acute toxicities between the two groups; The mucositis, dysphagia, epidermitis and oral pain score changed significantly over the typical five weeks in two groups but these changes were more sever in placebo group (p=0.0001). In the analysis of the overall changes in the following laboratory parame-ters: WBC, hemoglobin and platelet showed that these parameters decreased over time in both groups without a significant difference between groups. "nConclusion: The results of these study showed that the use of a COX-2 inhibitor (celecoxib) that is a safe and inexpensive drug may reduce acute toxicities of chemoradiation specially mucositis in head and neck carcinoma.
Hollow-Fiber Microporous Membrane Liquid-Liquid Extraction for Determination of Polybrominated Diphenyl Ethers at Trace Levels in Sewage Sludge with Gas Chromatography-Electron Capture Detection  [PDF]
Azadeh Sharifi Aghili, Jan ?ke J?nsson
Journal of Environmental Protection (JEP) , 2011, DOI: 10.4236/jep.2011.22023
Abstract: A two-phase hollow-fiber (HF) liquid-phase microextraction (LPME) method followed by gas chromatography was developed for quantification of 8 major polybrominated diphenyl ethers at trace level in sewage sludge. In this method the porous polypropylene hollow fibers filled with a few microliters of organic solvent, were immersed in aqueous samples of wet sludge which were spiked with the PBDEs at ng/l level. Parameters such as salt concentration, stirring speed, extraction time and pH were optimized and the optimum extraction conditions were then applied to the determination of PBDEs in sewage sludge from Källby sewage treatment plant in Lund. The optimized method allowed detection of 5.1 µg kg–1 and 0.43 µg kg–1 of BDE-47 and 183, respectively, in dried sludge. The findings were compatible with the results from recent research on PBDEs level in sewage sludge samples from Sweden. Although BDE-209 was expected to have the highest level, it was not detected. Limit of detection, photodegradation or/and biodegradation of BDE-209 during treatment or experiment are major reasons. Low organic solvent consumption, low sample volume requirement, high preconcentration factor, simplicity without using expensive instrument for extraction and excellent sample clean-up are some important factors that make this sample preparation technique very useful for determination of PBDEs in sludge.
Nutritional status of greenhouse cucumber and bell pepper in Isfahan province
F. Aghili,A. H. Khoshgoftarmanesh2,M. Afyuni,M. Mobli
Journal of Science and Technology of Greenhouse Culture , 2011,
Abstract: Despite of increasing request for greenhouse vegetables, there is quite limited information on their nutritional quality. This study was carried out to investigate nutritional status of macronutrients (Ca, Mg, P and K) and micronutrients (Fe, Mn, Cu and Zn) in greenhouse cucumber and bell pepper in Isfahan province. After selecting 25 greenhouses, the concentration of macronutrients and micronutrients was measured in soil and edible parts of cucumbers and bell peppers. The results showed that mean concentration of P and K in the soils was much higher than their critical deficiency level. Mean concentration of DTPA-extractable Fe, Zn, Cu and Mn of the soils was 12.0, 4.9, 1.9, and 14.5 mg kg-1. Mean fruit Mg, P and K concentrations in the cucumber and bell pepper were greater than their sufficiency level, while more than 75% of the greenhouse cucumbers were Ca deficient. Also more than half of the greenhouse cucumbers and about 20% of greenhouse bell peppers had Mn deficiency. Also more than 60% of greenhouse cucumbers were Fe and Zn deficient. According to the results, high concentration of some macronutrients such as P and K, and widespread deficiency of Ca and micronutrients in greenhouse production, is probably due to nutritional mismanagement, unbalanced fertilizer application, unstable greenhouse conditions and environmental pollution risks.
Generation of the Cluster States using Double Quantum Dots in Circuit QED
M. M. Aghili Yajadda
Physics , 2009,
Abstract: The cluster state quantum computation is a versatile approach to build a scalable quantum computer. In this thesis we theoretically demonstrate that a one dimensional array of double quantum dots with long spin relaxation time can evolve to a cluster state via capacitive coupling to a transmission line resonator. By applying an oscillating voltage to gates of the double quantum dots, we prove that the evolution operator for such interaction is an Ising-like operator. Subsequently, the interacting qubits will become highly entangled that we realize a cluster state. Furthermore, we propose an experiment to investigate validity of our theoretical method. Considering the current advanced technology in semiconductor nanofabrication, our proposed structure can be integrated on a chip where provides scalability and convenient control of the qubits. The scalability of our scheme implies that we can expand this structure to higher dimensional arrays of the qubits where paves the way for further experimental investigation on the theory of measurement-based quantum computation.
Green Manure Addition to Soil Increases Grain Zinc Concentration in Bread Wheat
Forough Aghili, Hannes A. Gamper, Jost Eikenberg, Amir H. Khoshgoftarmanesh, Majid Afyuni, Rainer Schulin, Jan Jansa, Emmanuel Frossard
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0101487
Abstract: Zinc (Zn) deficiency is a major problem for many people living on wheat-based diets. Here, we explored whether addition of green manure of red clover and sunflower to a calcareous soil or inoculating a non-indigenous arbuscular mycorrhizal fungal (AMF) strain may increase grain Zn concentration in bread wheat. For this purpose we performed a multifactorial pot experiment, in which the effects of two green manures (red clover, sunflower), ZnSO4 application, soil γ-irradiation (elimination of naturally occurring AMF), and AMF inoculation were tested. Both green manures were labeled with 65Zn radiotracer to record the Zn recoveries in the aboveground plant biomass. Application of ZnSO4 fertilizer increased grain Zn concentration from 20 to 39 mg Zn kg?1 and sole addition of green manure of sunflower to soil raised grain Zn concentration to 31 mg Zn kg?1. Adding the two together to soil increased grain Zn concentration even further to 54 mg Zn kg?1. Mixing green manure of sunflower to soil mobilized additional 48 μg Zn (kg soil)?1 for transfer to the aboveground plant biomass, compared to the total of 132 μg Zn (kg soil)?1 taken up from plain soil when neither green manure nor ZnSO4 were applied. Green manure amendments to soil also raised the DTPA-extractable Zn in soil. Inoculating a non-indigenous AMF did not increase plant Zn uptake. The study thus showed that organic matter amendments to soil can contribute to a better utilization of naturally stocked soil micronutrients, and thereby reduce any need for major external inputs.
Acute and subacute cardiac complications following radiotherapy in patients with left breast cancer
Salari,Aghili,Nemati Pour,Ranjbarnejad
Tehran University Medical Journal , 2008,
Abstract: "nBackground: Radiation to some parts of the heart is unavoidable in the therapeutic course of primary tumors in many kinds of cancer, including breast cancer. The aim of this study was to assess the frequency of acute and subacute cardiac complications following radiotherapy in patients with left breast cancer. "nMethods: In this study, we enrolled 53 patients with left breast cancer who underwent mastectomy or lumpectomy between September 2005 and September 2006 in Imam Khomeini Hospital Complex, and subsequently underwent chemotherapy with anthracyclines (<450mg/m2) and Endoxan plus taxane/fFluorouracil followed by radiotherapy. In all patients, electrocardiography and echocardiography were performed before initiation of radiotherapy, immediately after radiotherapy and again three and six months later to check for radiotherapy-induced cardiac complications such as pericardial effusion, valvular lesions, left ventricular dysfunction, conduction system disturbances and other variables. "nResults: Thirty-nine patients completed the follow-up period. Among these, 10 (25.6%) patients experienced cardiac complications following radiotherapy. Among these, mild pericardial effusion in seven (53.85%) patients, mild mitral regurgitation in three cases (23.08%) and Right Bundle Branch Block (RBBB) in two cases (15.38%) were the most common complications. We found no correlation between cardiac complication and tumor dose, dose fraction and type of chemotherapy protocol. We noted no cases of new or more serious complications, such as cardiomyopathies or coronary artery disease, nor any changes in ejection fraction by the end of the follow-up period. "nConclusion: In patients with left breast cancer, acute and subacute cardiac complications following radiotherapy are not serious and have no clinical significance. Further studies are needed for more assessments in this area.
Hereditary Gingival Fibromatosis: A Review and a Report of a Rare Case
Hossein Aghili,Mahdjoube Goldani Moghadam
Case Reports in Dentistry , 2013, DOI: 10.1155/2013/930972
Abstract:
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