توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱QUANTUM DOTS AS THE NEWSTREAM OF CANCER DIAGNOSIS
نویسنده(ها): ، ،
اطلاعات انتشار: همایش ملی نانو مواد و نانو تکنولوژی، سال
تعداد صفحات: ۶
Materials at nano dimensions exhibit totally different properties compared to their bulk and atomic states. We describe the development of multifunctional nanoparticle probes based on semiconductor quantum dots (QDs) for cancer targeting and imaging in living animals. This feature has been harnessed by scientists from various disciplines, to develop cancer diagnosis and therapeutics. This brief review
summarizes the recent developments of various nanotechnologies in cancer therapy and diagnostics, both from the research sector and the upcoming products in pipeline on its route to commercialization. Supportive engineering innovations and frontiers in nanomolecular research, with a potential to revolutionize cancer diagnosis and therapy, have been discussed in brief.<\div>

۲The Effect of Diffusion Annealing Temperature on the Microstructure and Microhardness of Interface in Copper–Silver Bimetallic Strips
نویسنده(ها): ، ، ،
اطلاعات انتشار: اولین کنفرانس بین المللی و هفتمین کنفرانس ملی مهندسی ساخت و تولید، سال
تعداد صفحات: ۹
Copper–Silver bimetallic strips were produced by cold roll welding process and were treated by diffusion annealing in the temperature range 250–800 °C. The interface bonding strength was determined by bending test and microhardness profile was determined and microstructure in the interface region was observed. Hardness in the interface depends on diffusion annealing temperature. Diffusion annealing above 600 °C produces fine–grained an intermetallic phases in the interface region and silver matrix. The intermetallic formation and movement of intermetallic interface is a chemical–diffusion process. It is observed that the strength is greatly reduced by increasing the thickness of intermetallic compounds. These compounds have detrimental influence on physical and mechanical properties of interface. The results indicate that there is an optimum annealing temperature at which the sheet exhibits a satisfactory formability together with a high bonding strength.<\div>

۳Synthetic catalog simulation in low seismicity regions based on Monte Carlo method (Case study of Naien Zone)
نویسنده(ها): ، ،
اطلاعات انتشار: چهاردهمین کنفرانس ژئوفیزیک ایران، سال
تعداد صفحات: ۴
A Monte Carlo method is a technique that involves using random numbers and probability to solve problems. In this method, we fix a probabilistic model which is compatible with problem or simulate the problem itself. In both state, the random parameters are built by some specific rules and the process has been done over and over. Then we analyze the problem statistically. As mentioned, Monte Carlo method uses in lots of engineering science fields. One of the uses of Monte Carlo method is in the low seismicity regions for seismic hazard analysis and catalog simulation.<\div>

۴Synthesis and Characterization of p+ Porous Silicon Layers for Optical Waveguide Applications
نویسنده(ها): ، ،
اطلاعات انتشار: سومین کنفرانس مهندسی فوتونیک ایران، سال
تعداد صفحات: ۴
Using porous silicon is an attractive preposition for making optical waveguides because of its porosity controllability which leads to tuneable refractive indices. In this study, we prepared a series of p+ porous silicon samples electrochemically at different conditions. Then we investigated the effect of fabrication parameters on the morphology and structural features of fabricated PS layers by FESEM and AFM analysis. The observed relationships among the fabrication parameters, geometry and morphology were discussed, and a simplified model is suggested.<\div>

۵NEW SEISMOTECTONIC ZONING MAP OF IRAN
نویسنده(ها): ، ،
اطلاعات انتشار: ششمین کنفرانس بین المللی زلزله شناسی و مهندسی زلزله، سال
تعداد صفحات: ۷
This paper reports a new seismotectonic zoning map for Iran, which is developed based on the latest data on active tectonic, topography, magnetic intensity and seismicity catalogue. In this paper, we aim to provide a useful basis for further studies on seismic hazard analysis.To specify different seismic sources, two different active fault maps (Hessami, 2003 and Berberian, 1976) are used. The topography map is from National Cartographic Center of Iran, and the magnetic intensity map is developed by Geological Survey of Iran in 1998. The seismicity data which is used in this study is from a new updated earthquake catalogue for Iran. The report of earthquakes corresponding to a region limited by latitudes 23°W–42°E and longitudes 42°–65°N have been collected. The active fault traces and magnetic intensity data have significant role in defining the intersections and final boundaries of some zones. New map divides Iran into 29 zones with different seismotectonic characteristics. Following removal of foreshocks and aftershocks, based on the method described by Gardner and Knopoff, 1974, the completeness of catalogue in each zone is determined

۶SCALING OF LONG–TERM SEISMICITY IN ZAGROS, IRAN
نویسنده(ها): ، ، ،
اطلاعات انتشار: ششمین کنفرانس بین المللی زلزله شناسی و مهندسی زلزله، سال
تعداد صفحات: ۸
the long – term precursory scale increase y phenomenon is used for relating minor seismicity tomajor shallow earthquakes in zagros the y phenomenon involves an increase in the magnitude and rate of occurrence of minor earthquakes in an area near to the location of major event by the modeling of long term seismogenesis as a three –stage faulting process against a background of self–organized criticality the precursory scale increase y phenomenon can be inferred<\div>

۷DETECTION OF SEISMIC DUAL–ZONES WITH APPLICATION TO EARTHQUAKE PREDICTION
نویسنده(ها): ، ، ،
اطلاعات انتشار: ششمین کنفرانس بین المللی زلزله شناسی و مهندسی زلزله، سال
تعداد صفحات: ۸
In this paper, we introduce a new approach to find the world’s dual seismicity zones, where an earthquake in one zone acts as a precursor to the events in some other zones. Dividing the entire global plane into well–defined sub–regions, this method creates a matrix whose different cells correspond to different spatial–temporal seismic attitudes, with each cell identifying the total number of events occurred in that sub–region within that specified period of time. It, then proposes a procedure to measure the possibility or likelihood of an event in those regions by looking through the current situation of the reference region. Therefore, the method can forecast future status of the reference region by searching the database of earthquakes which have occurred already, and this would further result in prediction of other double–seismicity regions. This problem includes an exhaustive search which needs precise algorithms from data mining to be fulfilled. Realization and validity of the new forecasting approach is simply confirmed by the last year’s events data recorded in NEIC catalogue.<\div>

۸A SEISMIC EARLY WARNING SYSTEM FOR TEHRAN
نویسنده(ها): ، ،
اطلاعات انتشار: ششمین کنفرانس بین المللی زلزله شناسی و مهندسی زلزله، سال
تعداد صفحات: ۶
Seismic records of Iran indicate the occurrence of many devastating seismic events, some of which were in densely populated areas in the vicinity of major faults. Tehran, as an example, with an estimated population of more than 10,000,000, is surrounded by many active faults. Therefore, an earthquake early warning can be a useful short term solution to reduce damages and potential casualties of a large earthquake. As of seismic instrumentation, three major seismic networks are operating in Iran, which need further development and collaboration: (1)Iran Strong Motion Network (ISMN), using over 1000 digital accelerographs, of which only 50 stations use GPS timing; (2) Iranian National Seismic Network (INSN), including 30 realtime broadband stations; and (3) the Iranian Seismic Telemetry Network, with 70 3–component seismographs (mostly short–period and occasionally broadband) with real–time connection. Due to low network density and lack of absolute timing in many stations, the available seismic records are sometimes of poor quality. Furthermore, some important seismic events are not recorded. We chose a method to make the best use of the available data. A combination of Tauc Pd and Elarms which are capable of using both single–station and multi–station data were sed to minimize the exclusion of poorly covered events. The method also has the advantage of being capable of using more accurate events. The results, not only are the theoretical base for a future warning system, but also can be used to optimize and modify the existing seismic networks<\div>

۹Reduction of energy consumption using toluene solvent in gas dehydration process
نویسنده(ها): ، ، ،
اطلاعات انتشار: هشتمین همایش ملی انرژی، سال
تعداد صفحات: ۹
In this paper, results of an experimental study on enhancement of TEG regeneration using toluene solvent have been investigated. Effect toluene concentrations ,0.1%wt, for increasing TEG purity in a pilot scale column with 20 sieve tray water concentrations , 10%wt investigated. For study of reflux effect on regeneration performance of TEG, experiment carried out in batch distillation column at two conditions: total reflux and without reflux. By addition of solvent in feed solution, consuming of reboiler duty for boiling of solution decreases to 8.63% for 10%wt water in feed solution.<\div>

۱۰Experimental Measurment of Methane Hydrate Equilibria in the Presence of Aqueous Imidazolium–based Ionic Liquid Solutions
نویسنده(ها): ، ، ،
اطلاعات انتشار: چهاردهمین کنگره ملی مهندسی شیمی ایران، سال
تعداد صفحات: ۴
Methane hydrate dissociation conditions in the presence of imidazolium based aqueous ionic liquid solutions including 1–buthyl–3–methylimidazolium methyl sulfate ([BMIM][MeSO4]) , 1–ethyl–3–methylimidazolium hydrogen sulfate ([EMIM][HSO4]) and 1–1–ethyl–3– methylimidazolium ethyl sulfate [EMIM][EtSO4] are investigated. The reliability of the experimental procedure in this work is demonstrated by comparing methane hydrate dissociation data in pure water with literature. The comparison between methane hydrate dissociation conditions in the presence\absence of ionic liquid solutions is shown. It is found that amongalkylsulfate–containing ionic liquids, the thermodynamic inhibition effects of two ionic liquids such as [EMIM][HSO4] and [BMIM][MeSO4] are better than that of [EMIM][EtSO4<\div>

۱۱Application of Electrolyte Cubic Square–Well Equation of State for Prediction of the Gas Hydrate Formation in the Presence of Electrolyte Solutions
نویسنده(ها): ، ، ،
اطلاعات انتشار: هفتمین کنگره ملی مهندسی شیمی، سال
تعداد صفحات: ۸
Electrolyte Cubic Square–Well Equation of State, eCSW EOS, [Haghtalab, A.; Mazloumi, S.H.;Fluid Phase Equilib. 2009, 285, 96–104] is based upon cubic–square–well equation of state. This equation of state is composed of the attractive term that is based on the square–well potential, thevan der Waals repulsive part and the mean spherical approximation theory (MSA) for electrostatic contribution. In this work, eCSW EOS is coupled with the van der Waals–Platteuw model andapplied to compute the conditions of gas hydrate formation. The H–L–V equilibrium calculation isperformed to optimize the Langmuir constants against temperature for N2, CH4, C2H6, C3H8, i– C4H10, n–C4H10 and CO2 hydrates using the experimental data in literature. Also, using eCSW EOS the interaction parameters of CO2–water and electrolyte–water are obtained. The equilibrium hydrate formation pressures of single gas hydrates are predicted and the results compared with the calculated values using SRK and PR EOSs. Also, predicting equilibrium hydrateformation pressures of various hydrate formers in the presence of electrolytes such as NaCl, KCland CaCl2 are performed. The results of prediction at the different cases are in good agreement with the experiments<\div>

۱۲Photocatalytic Decolorization of methyl orange dye using Iron oxide–doped Titanium oxide nano–photocatalysts
نویسنده(ها): ، ،
اطلاعات انتشار: پنجمین همایش ملی مهندسی فرآیند، پالایش و پتروشیمی، سال
تعداد صفحات: ۸
TiO2\Fe3O4 and TiO2\Fe2O3 nanocomposites with various ratios were synthesized by an ultrasonic–assisted deposition–precipitation method and their UV–light decolorization of methyl orange (MO) dye was investigated. The effect of Fe3O4\TiO2 and Fe2O3–TiO2 nanocomposites ratio on the photocatalytic activity and magnetic property of the nanocomposites was studied by comparing their decolorization curves and magnetism in the presence of magnet, respectively. The results revealed that the decolorization efficiency of 1 wt% Fe3O4\TiO2 nanocomposite reached about 40% within 60 min UV irradiation at room temperature. However, this sample showed the least magnetism. Also, the ability of synthesized nanocomposites in holding the adsorbed methyl orange dye on their surface and the effect of pH were investigated<\div>

۱۳Design and manufacture of an optimal Rogowski coil for discharge signal reception in fusion devices
نویسنده(ها): ، ، ،
اطلاعات انتشار: اولین کنفرانس بین المللی دستاوردهای نوین پژوهشی در مهندسی برق و کامپیوتر، سال
تعداد صفحات: ۱۳
The new current measuring equipment such as current measuring insulators are good replacements for traditional current transformers (CTs) that are bulky and expensive. Developments in electronic areas have enhanced working with low level signals. In fact, there is no need for high power signals to trip a protection relay and other protecting and controlling devices. The conception of designing of these insulators is based on recent developments. In this work, we introduce the designing procedures of such insulators that have rogowski current sensors for using at high voltage overhead lines. The work can be divided into sub–sections like design of current sensors, shielding, detecting and transmitting the signal to control center. Here, all current sensors have been introduced but we generally focus on rogowski sensors for design of the insulators. For current sensors, first the induced voltage of the coil should be depicted in terms of current passing through the overhead lines and other dimensional parameters. After that, using appropriate a experimental observations on PF device, the voltage and current relation is evaluated by changing other parameters as distance between the coil and current carrying conductor and observing the changes in the induced voltage to establish a lookup table or a curve for these kinds of changes. Perhaps the main purpose of the design in all equipment is like this i.e. recording the changes in output of the device in term of varying parameters and making the design in relation to those records. Finally, we suggest good instructions for shielding the insulator against electric and magnetic fields since in the absence of suitable shielding the measuring will not be satisfactory.<\div>

۱۴An introduction to Fault slip Profiles to Characterize slip Distribution in Earthquakes, Implication for Geological Structures and fault Mechanisms
نویسنده(ها): ،
اطلاعات انتشار: Journal of Sciences، سال
تعداد صفحات: ۱۶
AbstractIntroduction :This article's objective is to explain slip distribution on faults andunderstanding further the processes of earthquakes and fault slip , and how they are related.Yet, rare were the studies that tried to compare these slip distributions . Few studies did so, butmainly focused on characterizing the earthquake slip complexity . The overall slip distributionpatterns were not considered. Hence, the questions related to the average shape of earthquakeslip distributions are still opened.The profiles of maximum and mean slip that extracted from the models in this articleallow total slip variations along both fault strike and dip to be studied. The general idea thatfollowed is that analyzing many earthquakes together provides a way of smoothing theirindividual peculiarities (such as specific slip complexities), so that common, generalproperties, may emerge.Aim: The present study investigated characterizing average slip distributions onearthquakes beyond their individual heterogeneity.Methods: An auto correlation method was used to define an effective length at whichzones of zero (or small) slip are not contributing, even when localized between slip patches.Acollection of one–dimensional profiles was prepared, each is given as D(x) (D isdisplacement or slip, x is position along fault length or width). Hence, all profiles aremathematically comparable and can be analyzed similarly, with a general procedure.Results:While earthquakes are complex features with highly heterogeneousmechanical conditions on their planes (due to pre–stresses, static and dynamic stressloading\unloading by neighboring ruptures , host rock properties, etc .. .), they share somecommon, generic properties that appear when a large number of events are examinedtogether: most produce triangular slip profiles (:::::70% are asymmetric) with well defined, longlinear tapers. Triangular slip distributions on earthquake faults seem to be self–similar ,suggesting that they attest to a scale–invariant mechanical behavior.Most slip profiles areasymmetric, suggesting different behaviors at the two edges of the major asperity.Conclusion:The maximum and mean slip profiles draw a triangular and asymmetricaverage curve, while three dominant degrees ·of asymmetry are revealed.The observation oftriangular slip distributions therefore attests to a common, general property of faults,regardless of their scales and kinematics. The area broken during this first stage appears asthe major asperity that shapes the total triangular slip distribution
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