۱بررسی اثرات امواج دریایی بر روی مدلهای با شکل هندسی غیراستاندارد
اطلاعات انتشار: چهارمین کنفرانس بین المللی سواحل و بنادر و سازه های دریایی، سال
تعداد صفحات: ۵
The results of an experimental work on the wave effects on a non–standard structure is presented. The model is a semi cone attached to the bottom of a prismatic channel and is under the action of the waves generated by a wave maker. Dynamic pressures are measured on the surface of the model. The results show that effective wave force on the model increases with the increase of water depth, if the wave amplitude is kept constant.

۲طراحی و نظارت بر حفاظت کاتدی سکوهای دریایی
اطلاعات انتشار: سال
تعداد صفحات: ۱۱
One of the important subjects about protection systems for offshore plaforms is that of its Designing and monitoring cathodic protection. In the early years Dwight equation and those simillar to it were used for designing cathodic protection system. As anode coerrode, their dimentions change. In addition sea conditions such as temprature change, salinity variation, Current speeds of water and calcareous deposits formations on underwater parts of offshore plateformes are all variables, that make, Dwight and simillar equations of no use for answering problems concerning design of cathodic protection systems. Today computer modeling is succestully used for designing and monitoring cathodic protection system. In this type of process potential distribution at each part are obtained by measuring potentials of only limited number of points of the offshore plateform. In this article we not only discuss the above subjects but also we talk about a technology for monitoring cathodic protection systems in offshore platforms, equipment used for this purpose and manipulation mathematical calculation used for cathodic protection system. Also in this article methods and related equipment used as data acquisition system, its classifications, mathematical calculation and finally the application of computer in this regard, are all discussed

۳آشکارسازی حفره های زیرسطحی به روش مقاومت ویژه Bristow
اطلاعات انتشار: دوازدهمین کنفرانس ژئوفیزیک، سال
تعداد صفحات: ۶
Electrical resistivity method is a suitable tool for investigation on subsurface inhemogenities including subsurface cavities and karst. One kind of resistivity configurations for detection of subsurface cavities is Bristow method. In this method, Pole–Dipole array and a graphical technique for interpretation of field data are applied. The aim of this research is evaluation of Bristow method in detection of subsurface cavities and comparing it with other linear resistivity arrays. Comparisons among different resistivity arrays confirm that Bristow method is an applied and logical way for detection of subsurface cavities and karst.

۴اثر اندازه گیری PMR در تفسیر بهینه مقاومت ویژه الکتریکی
اطلاعات انتشار: دوازدهمین کنفرانس ژئوفیزیک، سال
تعداد صفحات: ۴
Groundwater detection by PMR method can obtain an important information like number of equifers, depth and thickness of each equifer together with its water content. Although the resistivity method is an indirect method for ore and equifer detection, but the ability of the method in detecting equifer thickness and performance is not good for the interpretation. So the PMR method is a complementary method for optimum groundwater detection. The interpretation of resistivity method for Qom plane have been done using PMR sounding and the optimum drilling point

۵اکتشاف اورانیوم به روش ژئوفیزیک هوایی در فاز شناسایی در منطقه برندق
اطلاعات انتشار: دوازدهمین کنفرانس ژئوفیزیک، سال
تعداد صفحات: ۶
The available radioactive elements in the nature, in themselves decay series to other elements, emit alpha, beta and gamma rays that attention to power of penetration of gamma ray is used from this gamma ray measurements, for radiometric exploration of radiometric element specific for uranium. With use taken data of airborne radiometric simply can be studied a large area in a short time and with a little cost. In this paper, at the first, The tables of frequency distribution of uranium and thorium are designed, and then the frequency distribution histograms that are introducer of distribution and dispertion of uranium and thorium are designed. After drawing frequency distribution histograms the statistical parameters of these elements are estimated. then separation of anomaly value are done based dispertion around the average. At the end introduction of anomaly maps and separation of anomaly values and background are prepared on the base of calculations of classic statistics.

۶استفاده از تبدیل موجک بر روی داده های گرانی و تعیین عمق و شکل توده
اطلاعات انتشار: دوازدهمین کنفرانس ژئوفیزیک، سال
تعداد صفحات: ۶
One of the main objectives in interpretation of gravimetric data is determination of depth and structure of the mineral deposits. This article tries to use the wavelet transform as a new method for achieving such a goal. The advantage of this technique over traditional methods is the ability of differentiating the small and large anomalies easily by using windows of different sizes. In this paper we try to apply this method on gravimetric data, to find the depth and structure of the mineral deposits and compare the results of an artificial model with hypothetical one. This method has proved to be satisfactory at least for the one dimensional example mentioned above.

۷تاثیر اعمال خطاهای نگار چاه در تخمین موجک
اطلاعات انتشار: دوازدهمین کنفرانس ژئوفیزیک، سال
تعداد صفحات: ۷
A Bayesian inference for wavelet estimation from seismic and well data is studied. The forward model is based on the convolution model where the reflectivity is calculated from the well logs. The estimated wavelet is given as a probability density function such that uncertainty in the wavelet is considered in the problem. Seismic noise and possible mistie between the seismic and well time axis are included in the model. The wavelet estimation is obtained by Markov Chain Monte Carlo (MCMC) simulation and the gibbs sampler as one of its algorithms.

۸تعیین گسترش کانیسازی اورانیوم با استفاده از همبستگی چاهها در منطقه اکتشافی خشومی
اطلاعات انتشار: دوازدهمین کنفرانس ژئوفیزیک، سال
تعداد صفحات: ۷
To get a concept of the spread and distribution of uranium mineralization in a selective section, one of the fast methods is natural gamma–ray logs correlation for boreholes located at those sections. So the, digital gamma–ray logs of four boreholes located at one profile, in Khoshoumi area in central Iran, are processed and analyzed. Different processing methods was tested to find the best and clearest delineation of this section. With regard to the fact that mineral and uranium mineralization distribution are lenticular in this area, the process based on inverse distance to a power is the most suitable method in comparison with other methods and shows the best fit with geological observations in the area.

۹تشخیص دیواره ها و تعیین عمق آنها در سایت باستانی عمارت خسرو با استفاده از روش مغناطیسی
اطلاعات انتشار: دوازدهمین کنفرانس ژئوفیزیک، سال
تعداد صفحات: ۱۴
One of the geophysical methods is magnetic method that has been used in archaeological prospecting. This method is a primary survey at low cost and very fast in viewpoint of time without any damage to a site. This method has been used to map the historical site (Emarat Khosro) in Ghasr–e–Shirin in Kermanshah province. Total magnetic field and magnetic gradient field were used on this site. Interpretation of magnetic data indicates the location and depth of the walls.

۱۰چگونگی تشکیل اقیانوس های بازالتی ماه: همرفتی ناشی از برخورد شهاب سنگی و تولید مذاب در جبه ماه
اطلاعات انتشار: دوازدهمین کنفرانس ژئوفیزیک، سال
تعداد صفحات: ۴
We present impact–induced convection models in the Moon that explain the formation of lunar mare basalt, and the long duration of the basaltic flow. A large projectile that produces an Imbrium–size impact basin can induce three stage of melting at different depths. The first occurs near the surface, by strong heating of the projectile and target that results in melting and vaporization of the major part of the projectile and near–surface part of the target. This rapid melting does not create mare basalt. The second melting arises from the sudden reduction of the pressure in the upper mantle due to excavation of the basin. The ascending upper mantle material in the process of isostatic adjustment in response to the excavation partially melts by decompression within less than a few Myr after the impact. The possible related volcanism cannot explain basaltic flow on the Moon that lasted about ٨٠٠ Myr. The local impact–induced perturbations, however, trigger global–scale convection, and a large plume from lower mantle ascends directly beneath the impact basin. This convection causes the third stage of melting in the mantle and produces well over ١٠٧ km٣ of mare basalt that give rise to substantial mare flooding. We investigate the effects of an impact on the thermal evolution of the Moon and melt production in the mantle, using convection calculations in an axi–symmetric cylindrical coordinate system. The models have temperature–dependent viscosity, and time dependent heat sources arising from decay of radioactive materials. The mantle is allowed to melt as it crosses the solidus temperature and partial melting is calculated. We consider two different models, permeable and impermeable. Five different viscosity models are examined, where the ratio between the viscosity at the surface and at the bottom of the computation domain is ١٠٠, ٥٠٠, ١٠٠٠, ١٥٠٠ and ٢٠٠٠, respectively. The permeable model with viscosity contrast of ١٠٠٠ can explain the observed amount of basaltic flow as well as the duration of the volcanic eruption.

۱۱خصوصیات زلزله اصلی و پس لرزه های زمین لرزه 4 اسفند ما 1383 داهوئیه زرند کرمان
اطلاعات انتشار: دوازدهمین کنفرانس ژئوفیزیک، سال
تعداد صفحات: ۱۰
The Feb. ٢٣،٢٠٠٥ earthquake of Mw ٦,٤ shook west of Zarand in the southeast of Iran .This earthquake killed ٦١٢ persons and destroyed ٦٠ around villages . Field investigation and aftershocks distribution suggest a W–E faulting with northward dip,١١٠(cm)vertical dislocation , ٢٠‐٤٠(cm) right lateral strike–slip motion , ٨(km) surface and about ٨(Km) blind rupture. Enormous aftershocks were recorded by ٥ Stations of Geophysics Institute temporary network and about ٤٠٠ common aftershocks between them with ٤,٤ for strongest one which was separated is processed with other data's, like global and national telemetry network data's and GSI field investigation.

۱۲مطالعات مغناطیسی و رادار بر روی طاق های عمارت تاریخی خسرو در شهر قصر شیرین
اطلاعات انتشار: سال
تعداد صفحات: ۷
Magnetic and radar prospecting were done at Ghasr e Shirin town in Kermanshah province for detecting a large underground cavity ( Tagh ). The place of study is a historical monument which is named Emarat e Khosro. Magnetic and radar measurements have been done on the eastern part of the complex which is a place of some underground cavities. Magnetic and radar profiles indicate these cavities easily. Radargram , vertical derivative of magnetic field indicate the location of the anomalies which conform with the real situation. This work is completely experimental and research and was done for indicating the effect of underground cavities on magnetic and radar data. We conclude that the magnetic and radar methods are a good methods for finding the underground cavities.

۱۳مدلسازی وارون ترکیبی داده های مقاومت ویژه با آرایه های شلومبرژه و دو قطبی–دوقطبی بمنظور تعیین مسیر درز و شکافهای آبدار
اطلاعات انتشار: دوازدهمین کنفرانس ژئوفیزیک، سال
تعداد صفحات: ۶
The goal of this work is to determine the directions of fissures that contain water around the Well drilled in the distance of 1930m in main road of Tochal telecabine. To investigate this problem, a geoelectrical survey was conducted combining dipole–dipole and schlumberger arrays. At the beginning of the survey, schlumberger array profile carried out along the road. The electrical tomography obtained from the 2D inversion of the data showed anomaly with low resistivity between 7m to 30m of depth. Then one dipole–dipole array profile overlaying on the schlumberger array profile crossing the well carried out. To improve the inverse model using the vertical resolution of schlumberger array and the horizontal resolution of dipole–dipole array, we performed a joint inversion of schlumberger and dipole–dipole data. We conclude that the joint inversion improves the resolution of section obtained from each array separately._

۱۴مطالعه ی تولید و مهاجرت مذاب در مناطق فرورانش به کمک شبیه سازی جریان دو فاز
اطلاعات انتشار: دوازدهمین کنفرانس ژئوفیزیک، سال
تعداد صفحات: ۴
In this study we investigate the production and migration of melt in subduction zones with the aid of a numerical simulation. We solve the governing equations of the flow of a fluid melt phase through a porous and deforming mantle rock. We investigate the volume of melt produced and its subsequent movement under a variety of conditions. We find that the nonlinear dependence of the mantle rock permeability on its porosity is the defining factor in the time variations of melt production and the pattern of migration through the mantle. Furthermore, we investigate the importance of other parameters, such as the age of the subducting plate, and subduction dip and velocity.

۱۵جایگاه تکتونیکی گرانیت بورنورد (تکنار) شمال غرب کاشمر
اطلاعات انتشار: دومین همایش انجمن زمین شناسی ایران، سال
تعداد صفحات: ۴
گرانیت بونورد واقع در زون تکنار در یک محیط تکتونیکی از نوع بالا آمدگی خشکی زایی قاره ای (CEUG) تشکیل شده است. این گرانیت در رده گرانیتهای غیر کوهزایی نوع A قرار می گیرد و در یک محیط ریفت درون قاره ای (WPG) که هرگز به مرحله اقیانوس زایی نرسیده، از ذوب بخشی سنگهای پوسته قاره ای بوجود آمده است.

۱۶Operation Analysis of DSTATCOM using EMTDC Program
اطلاعات انتشار: بیستمین کنفرانس بین المللی برق، سال
تعداد صفحات: ۴
The DSTATCOM(Distribution Static Synchronous Compensator) is one of the Custom Power Device that can regulate the voltage. DSTATCOM operated as a shunt connected static var compensator whose capacitive or inductive output current can be controlled independent of the system voltage. And the magnitude of compensated voltage is limited by characteristics of system and load. Compensation capability of DSTATCOM
which can inject 1 MVAR reactive power was simulated by EMTDC under several condition. This paper analyzed effect of DSTATCOM’S compensation considering length and kind of distribution line, power factor and magnitude of load, duration and magnitude of voltage variation.

۱۷سیستم های فرمیونی تحت برهم کنش با طول پراکندگی بزرگ
اطلاعات انتشار: کنفرانس فیزیک ایران 1386، سال
تعداد صفحات: ۴
مطالعه خواص گاز فرمی تحت برهم کنش دو جسمی، کوتاه برد و جاذب با روش پایین ترین مرتبه قیدی ) ) LOCV انجام شده است . به منظورمطاله نواحی مختلف جفت شدگی که بوسیله حاصلضرب طول پراکنئگی موج s– و بردار موج فرمی، KF a ، مشخص می شود شدت پتانسیل؛ متغیر انتخاب شده است . هنگامی که شدت برهم کنش افزایش پیدا می کند حالت مقید بوزونی با دو فرمیون خواهیم داشت

۱۸بررسی فرآیند غنی سازی شکر با ویتامین A
نویسنده(ها):
اطلاعات انتشار: یازدهمین کنگره ملی مهندسی شیمی ایران، سال
تعداد صفحات: ۵
ویتامین ها ترک یبات آل ی هستند که به مقدار خ یلی جزئی برای متابولیسم مواد غذائی و اعمال حیاتی بدن و رشد و نمو وتندرست ی ضرورت دارند . تغذیه ناقص و رژ یم غذائ ی نا مناسب سبب کمبود ی ا فقدان ی ک ی ا چند و یتام ین می شود و به بیماری های مختلف مانند بری بری و پلاگر می انجامد . از جمله م ی توان به و یتام ینA یا retinyl ) (palmitateاشاره کرد که در ساختمان پوست ، موها ،چشم ، دندان و لثه حضور دارد . این ویتامین در سنین رشد در استخوان ساز ی شرکت م ی کند و به همین دلیل کودکان در حال رشد و خانم های باردار ی ا ش یرده نی از بی شتری به دارند . طبق آمار سازمان بهداشت جهان ی در سال ۱۹۹۸ قر یب به ۲۵۰ میلی ون کودک در سراسر دن ی ا در A ویتامین خطر کمبود و یتامینA قرار دارند . باید توجه داشت که بدن انسان توانایی ساخت ویتامین ها را ندارد به همین علت این ترکیبات ش یمیایی با ید به م یزان کافی و مداوم از طریق خوراک روزانه تامین شوند . از آنجا که شکر در برنامه غذائی تمام انسان هاوجود دارد لذا تام ین و یتامینA مورد ن یاز بدن با روش غن ی ساز ی شکر با ا ین ویتامین می تواند راهگشای ای ن مهم باشد بعنوان مثال اگر متوسط دری افت شکر کودکان ، زیرgr ۲۰ باشد در هر روز باشد این عدد برا ی بزرگسالان در gr بیشترین مقدار خود110 gr می باشد به قسمی که 15μg ویتامین A درهر گرم شکر می تواند احتیاجات را برآورده سازد .

۱۹7 CASE STUDIES OF ON–LINE MOMTORING & DIAGNOSTICS ON HYDROELECTRIC MACHINERY
نویسنده(ها): ،
اطلاعات انتشار: اولین کنفرانس ملی نیروگاههای آبی کشور، سال
تعداد صفحات: ۱۶
On–line monitoring provides invaluable machinery knowledge that enables utilities to make informed decisions about generating equipment condition and to plan maintenance upon needs, while increasing availability by reducing machine downtime and avoiding forced outages.
Studying the machine in its full range of operating and transient conditions, from standstill up to overspeed, enables a comprehensive assessment of the machine condition and behavior. Using state–of–the–art technologies and powerful analytical tools, the systems presented
have several times demonstrated their benefits and effectiveness at implementing conditionbased maintenance, diagnosing machine problems, and protecting from component failures and machine breakdowns.

۲۰The Turkish Catastrophe Insurance Pool
نویسنده(ها):
اطلاعات انتشار: سومین کنفرانس بین المللی مدیریت جامع بحران در حوادث غیرمترقبه، سال
تعداد صفحات: ۶
The Turkish Catastrophe Insurance Pool (TCIP) is established in September 2000 with the trigger impact of the 1999 earthquakes. The TCIP is considered to be a successful application of disaster insurance in an emerging economy like Turkey. This insurance scheme is working quite efficiently however it needs some improvements. In this presentation, we discuss the beneficial aspects of the TCIP and the future of the system.

۲۱تعیین بهره بهینة فیلتر اکتیو موازی نصب شده روی فیدر توزیع بمنظور میرا کردن پدیده های » انتشار هارمونیکی « و « whack–a–mole » در خطوط توزیع قدرت
نویسنده(ها):
اطلاعات انتشار: سیزدهیمن کنفرانس مهندسی برق ایران، سال
تعداد صفحات: ۸
چکیده : در خطوط توزیع شبکه برق بین خازنهای موازی خط که به منظور اصلاح ضریب توان در شبکه قدرت بکار می روند و سلفهای سری خط ممکن است تشدید سری \ » موازی رخ دهد . این تشدید سری \ موازی باعث ایجاد پدیده انتشار هارمونیک ١« در خطوط توزیع قدرت می شود . بمنظور میراکردن این پدیده ، فیلترهای اکتیو قدرت روی سیستم های توزیع نصب می شو ند . فیلتر اکتیو روی هر باسی از فیدر توزیع که نصب شود ولتاژ هارمونیکی روی آن باس را بطو ر مؤثر کاهش می دهد اما ممکن است ولتاژ هارمونیکی روی باس های دیگر را ، بویژه باس های میانی فیدر توزیع قدرت ، نسبت به موقعی که هیچ فیلتر اکتیوی نصب نشده است افزایش دهد . این پدیده در میان محققین و مهندسان سیستم های قدرت و الکترونیک قدرت به نام پدیده whack– a–mole شناخته می شود . برای جلوگیری از انتشار هارمونیک در طول خط توزیع بگونه ای که منجر به ایجاد پدیده « whack–a–mole » نشود باید فیلتر اکتیو روی باس انتهایی فیدر توزیع قدرت نصب شده و همچنین فیلتر باید دارای بهره کافی متناسب با پارامترهای فیدر توزیع باشد . هدف این مقاله تعیین بهره بهینه فیلتر اکتیو قدرت بمنظور کنترل مطلوب دو پدیده » انتشار هارمونیکی « و « whack–a–mole » درشرایط بی باری و بارداری در شبکه توزیع می باشد .

۲۲SOPC–Based Particle Swarm Optimization
اطلاعات انتشار: دوازدهمین کنفرانس سالانه انجمن کامپیوتر ایران، سال
تعداد صفحات: ۶
The complexity of the modern chips is rising and fundamental changes in systems design are necessary. Systemon– a–Programmable–Chip (SOPC) concept is bringing a major revolution in the design of integrated circuits, due to the flexibility it provides and complexity it caters to. Particle Swarm Optimization (PSO) is a new powerful function optimizer that is used successfully to solve problems in numerous fields. A major downside of PSO and many evolutionary algorithms is that they have essential difficulties in their huge computation time due to sequential execution in software implementation. By implementing a modified particle swarm optimizer in hardware, many of the computations can be preformed simultaneously, significantly reducing computation time compared to software. In this paper, a SOPC–based PSO framework is proposed. The obtained results indicate a speedup of up to 40 times in the elapsed computation time<\div>

۲۳چالشهای مدیریت در بیوتکنولوژی
نویسنده(ها): ،
اطلاعات انتشار: چهارمین همایش ملی بیوتکنولوژی ایران، سال
تعداد صفحات: ۴
The subject of this review is current Biotechnology management and the existing challenges. Should there be a difference in management of advanced technologies as opposed to others? In such management is care taken to consider social and economic facts? Obviously, method of management varies among organizations. The mission of each organization is bound to determine the working instructions and the instructions in return determine the appropriate organizational structure. An estimated ninety percent of the activities of each organization is common to others leaving only ten percent specialized. Thus, great care should be taken to coordinate this portion of activities with the mission, culture, history and the dialect of that organization. The work output of organizations with systematic and professional management will thus become significantly outstanding.

۲۴مطالعه اثر کلراید سدیم بر توانایی جهش زایی نیتریت سدیم
اطلاعات انتشار: هشتمین کنگره تغذیه ایران، سال
تعداد صفحات: ۷
The cocarcinogenicity of sodium chloride was assayed by in vivo experiments. The investigation was carried out in 18 male rats. The rats were 8 weeks old and weighted 90 grame and they were exposed to the same environmental conditions. Rats were divided into 3 groups: 1– Control group, 2– Rate treated twice, with an interval of 24 hours, with sodium nitrite in does 5.18 mg\ kg body weight, 3– Rats given nitrite the same as second group, 24 hours after a single application of 1 ml of saturated sodium chloride solution (29 percent) to investigate the effect of sodium chloride as a cocarcinogenesis. Bone marrow biopsy samples were obtained for all three groups. Micronuclei index was evaluated an all groups. Sodium chloride and nitrite induced signicant increase in micronuclei count in the third group (P<0.001). But nitrite without sodium chloride did not induce any significant increase of the number of micronuclei. This data suggest a possible role of cocarcinogenicity for sodium chloride when used prior to sodium nitrite in rats.

۲۵ارائه یک واسط انسان–کامپیوتر بمنظور کنترل صندلی چرخدار مجازی بر اساس سیگنالهای چند کاناله ثبت شده از پیشانی
اطلاعات انتشار: چهاردهمین کنفرانس مهندسی پزشکی ایران، سال
تعداد صفحات: ۶
The goal of Human–Computer Interface (HCI)) (Human–Robot interface HRI) research is to provide humans with a new communication channel that allows translating Human's will states via a computer into application specific actions. This paper presents a novel hands–free control system for controlling a virtual wheelchair, which is based on Forehead Multi–channels Bio–signals as EMG (Electromyogram) signals. In this method, new locations for three Bi–polar electrodes are selected. The Bioelectric signals are picked up from lateral sides and centre of Forehead then the Bio–signals are passed through a band pass filters. Motion control commands (forward, left, right, backward and stop) are classified by SVM method. These commands are used for controlling the virtual wheelchair by interface software in a Personal Computer.
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