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مرکز اطلاعات علمی SID1
مرکز اطلاعات علمی SID
مرکز اطلاعات علمی SID
مرکز اطلاعات علمی SID
مرکز اطلاعات علمی SID
مرکز اطلاعات علمی SID
مرکز اطلاعات علمی SID
نویسنده: 

NALBANDI A.

اطلاعات دوره: 
  • سال: 

    2016
  • دوره: 

    0
  • شماره: 

    7
تعامل: 
  • بازدید: 

    38
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

THE EFFECTS OF MAINTENANCE ON THE TENSILE STRENGTH AND CORROSION RESISTANCE OF API5LX52 ARE INVESTIGATED IN THIS RESEARCH. FOR THIS PURPOSE, FOUR SERIES OF SAMPLES INCLUDING CONTROL SAMPLES, 1, 2 AND 3 TIMES REPAIRED SAMPLES WERE PREPARED FOR TENSILE AND CORROSION TESTS. THE RESULTS SHOWED THAT IN THESE CIRCUMSTANCES ONE REPEAT OF REPAIR, REDUCING THE YIELD STRENGTH AND RESULT IN FURTHER REDUCTION OF TENSILE STRENGTH. IN THE CASE OF TWICE REPAIR SAMPLES; THE CORROSION RESISTANCE WAS HIGHER THAN OTHER REPAIRS SAMPLES. FOR THIS REASON, WITH REGARD TO THE TENSILE STRENGTH AND CORROSION RESISTANCE, TO ACHIEVE THE BEST RESULT, 2TIMES REPAIR IS RECOMMENDED.

آمار یکساله:  

بازدید 38

دانلود 0
نویسنده: 

OMUMI A. | MORSHEDI D. | SAMADI A.

اطلاعات دوره: 
  • سال: 

    2016
  • دوره: 

    0
  • شماره: 

    7
تعامل: 
  • بازدید: 

    30
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

MATHEMATICALLY, THE STATIC SYNCHRONOUS COMPENSATOR CAN BE REPRESENTED BY EULER-LAGRANGE (EL) SYSTEM CORRESPONDING TO A SET OF EL PARAMETERS. THEREFORE, A STATIC SYNCHRONOUS COMPENSATOR CONTROLLER BASED ON PASSIVITY CONSIDERATION IS OBTAINED WITH A FEEDBACK CONTROL LAW FROM LINEAR SYSTEM MODELS. SIMULATION RESULTS SHOW THAT THE PROPOSED STATIC SYNCHRONOUS COMPENSATOR CONTROLLER CAN EFFECTIVELY ENHANCE TRANSIENT STABILITY OF THE POWER SYSTEM EVEN IN THE PRESENCE OF LARGE OPERATION POINT VARIATIONS. IT IS USED PSCAD/EMTDC SOFTWARE FOR RESEARCH AND SIMULATION.

آمار یکساله:  

بازدید 30

دانلود 0
نویسنده: 

FIROUZABADI H. | IRANPOUR N. | AMANI K.

اطلاعات دوره: 
  • سال: 

    2016
  • دوره: 

    0
  • شماره: 

    7
تعامل: 
  • بازدید: 

    32
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

THE CORRECT USE OF ENERGY IS ONE OF THE MOST IMPORTANT ISSUES THAT HAVE PREOCCUPIED MANKIND TODAY, BECAUSE ON ONE HAND THE RICH LIFE OF TODAY'S HIGH DEPENDENCE ON ENERGY. AND ON THE OTHER HAND THE USE OF ENERGY SOURCES (MAINLY FOSSIL FUELS) CAUSE POLLUTION AND DAMAGE TO THE ENVIRONMENT. TO FIX THIS PROBLEM IN ADDITION TO THE USE OF CLEAN ENERGY SOURCES CAN BE USED TO LOCALIZE ITS RESIDENTIAL ARCHITECTURE AND USE OF ENERGY RESOURCES DUE TO CHANGED CLIMATIC CONDITIONS IN EACH REGION. AFTER STATING THE RISKS OF ENVIRONMENTAL DEGRADATION AND GLOBAL WARMING AND THE ENDANGERMENT OF THE NEEDS OF FUTURE GENERATIONS BY AS THE SLOGAN OF THE CENTURY "SUSTAINABLE DEVELOPMENT" ORGANIZATIONS AND INSTITUTIONS PROTECT THE ENVIRONMENT AND PRESERVE NATURE, THE TERM WAS INTRODUCED TWENTY-FIRST. KNOWLEDGE, INCLUDING SCIENCE, ARCHITECTURE AND SEEKS TO SUPPORT THE SLOGAN RAISED WITH THE PRINCIPLES AND PURPOSES IT IS. VERNACULAR ARCHITECTURE DERIVED FROM THE CULTURE, CLIMATE, LIVELIHOODS AND THE ECONOMY IS INHABITED, IN EACH REGION HAS A WAY OF IMPLEMENTATION, AND FORM THEIR OWN SPECIFIC INTERESTS, BASED ON THE KNOWLEDGE AND EXPERIENCE OF SEVERAL HUNDRED RESIDENTS OF THE AREA FORMED. DESIGN, ORIENTATION AND FORM ALL THE ELEMENTS OF THIS ARCHITECTURE IS BASED ON LOCAL CLIMATE AND IDENTIFY USEFUL AND CLIMATE UNHELPFUL BY THE NATIVES IN ORDER TO TAKE ADVANTAGE OF FREE AND RENEWABLE ENERGIES TO CREATE COMFORT CONDITIONS TO THE RESIDENTS THERE.

آمار یکساله:  

بازدید 32

دانلود 0
نویسنده: 

DEHKORDI A.M. | KAGHAZCHI T. | SOHRABI MORTEZA

اطلاعات دوره: 
  • سال: 

    2016
  • دوره: 

    0
  • شماره: 

    7
تعامل: 
  • بازدید: 

    38
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

THE EFFECT OF AL2O3 NANOPARTICLES AND TEMPERATURE ON THE OVERALL HEAT TRANSFER COEFFICIENT (U) IN A HEAT EXCHANGER IN LAMINAR FLOW REGIME WAS INVESTIGATED EXPERIMENTALLY. FOR THE TEST, THE VEHICLE COOLING SYSTEM WAS SIMULATED. IN THIS CASE, THE CROSS-FLOW HEAT EXCHANGER CONSISTS OF 34 TUBE WITH ELLIPTICAL CROSS-SECTION (RADIATOR CAR) SHD. NANVZRAT USE IN VOLUME FRACTION 0.15, 0.4 AND 0.65 PERCENT WAS ADDED TO DISTILLED WATER. TO STABILIZE AND PREVENT THE NANOPARTICLES IN WATER AND SEDIMENT TESTING MACHINE, ULTRASOUND MACHINE (ULTRASONIC MIXER) WAS USED. THE FLUID FLOW OF 2.0 M3/HR 0.5 BY A CENTRIFUGAL PUMP INCREASES TO CAUSE THE LAMINAR FLOW REGIME, (900>RENF>200). THE FLUID IS HEATED BY TWO 6000 WATT HEATED TO THE TEMPERATURE OF THE INLET FLUID TO THE HEAT EXCHANGER BY THE CONTROLLER PID VALUES OF 50, 65 AND 80OC OPERATING TEMPERATURE CLOSE TO HIS CAR'S RADIATOR DURING OPERATION. RESULTS SHOWED THAT BY INCREASING AIR VELOCITY AND NANOFLUID OVERALL HEAT TRANSFER COEFFICIENT INCREASES, BUT WITH INCREASING TEMPERATURE INPUT NANOFLUID, OVERALL HEAT TRANSFER COEFFICIENT DECREASES. THE USE OF NANO FLUIDS WITH A CONCENTRATION OF 0.65 VOLUME PERCENT TO 13 PERCENT OVERALL HEAT TRANSFER COEFFICIENT AND THE HEAT TRANSFER RATE UP TO 11.5% COMPARED TO PURE WATER INCREASES.

آمار یکساله:  

بازدید 38

دانلود 0
نویسنده: 

GAZOR S. | RABIEI A.F.M. | PASUPATHY S.R.

اطلاعات دوره: 
  • سال: 

    2016
  • دوره: 

    0
  • شماره: 

    7
تعامل: 
  • بازدید: 

    34
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

IN THIS STUDY, THE GEMCITABINE ANTICANCER DRUG WAS INVESTIGATED USING THEORY. DFT AND TD-DFT CALCULATIONS AT MPW1PW91 METHOD WITH 6-311++G (2D, 2P) BASE SET HAVE BEEN USED TO INVESTIGATE THE GROUND AND EXCITED STATES BEHAVIORS OF DRUG IN GAS PHASE AND ETHANOL. SOLVENT MOLECULES INFLUENCE ON THE EQUILIBRIUM STRUCTURES SPECIES. THE CALCULATED THERMODYNAMIC PROPERTIES, THE RELATIVE ENERGY, DIPOLE MOMENT, STRUCTURAL PARAMETERS, HIGHEST OCCUPIED MOLECULAR ORBITAL (HOMO) AND THE LOWEST UNOCCUPIED (LUMO) ENERGIES, DOS PLOT AND ENERGY GAP SHOW THAT CHARGE TRANSFER OCCURS WITHIN THE MOLECULE. THE AIM IS TO ACHIEVE A MORE STABLE FORM OF THE DRUG GEMCITABINE IN TWO GAS PHASE AND SOLVENTS. THE CALCULATIONS SHOWED THAT THE STRUCTURE OF THE DRUG IN THE GROUND STATE AND THE EXCITED SOLVENT PHASE IS MORE STABLE THAN THE GAS PHASE. ENERGY GAP IN THE EXCITATION OF GAS AND ETHANOL IS DIFFERENT IN TWO PHASES.

آمار یکساله:  

بازدید 34

دانلود 0
نویسنده: 

GHOULIPOUR V. | HUSAIN S.W.

اطلاعات دوره: 
  • سال: 

    2016
  • دوره: 

    0
  • شماره: 

    7
تعامل: 
  • بازدید: 

    42
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

THIS STUDY AIMED TO INVESTIGATE THE ROLE OF ISLAMIC EDUCATION APPROACH IN THE BRAIN-BASED EDUCATION. THE CURRENT RESEARCH MADE USE OF CONTENT ANALYSIS TO STUDY ISLAMIC TEXTS, RESEARCHES AND STUDIES IN THE FIELD OF BRAIN-BASED EDUCATION. TO THIS END, ALL THE AVAILABLE PUBLISHED AND ELECTRONIC REFERENCES AND RESOURCES WERE GATHERED ON THE BASIS OF THE RESEARCH GOALS AND RESEARCH QUESTIONS. THE ANALYSIS OF THE DATA WAS BASED ON COMPARATIVE CLASSIFICATION. THE RESULTS WERE CATEGORIZED INTO THREE GROUPS OF COGNITIVE AND METACOGNITIVE FACTORS IN BRAIN-BASED EDUCATION, INTERACTIONAL-EMOTIONAL FACTORS IN BRAIN-BASED EDUCATION AND KINETIC-PHYSICAL FACTORS IN BRAIN-BASED EDUCATION. FURTHERMORE, THE CATEGORIES WERE ALSO DIVIDED INTO SUBCATEGORIES, ALL OF WHICH CONFIRM THE TRIPLE-COMPONENT MODEL COMING OUT OF PREVIOUS STUDIES. CONFIRMING SUBCATEGORIES OF THE FORMER TRIPLE MODEL I.E. COGNITIVE-METACOGNITIVE, INTERACTIONAL-EMOTIONAL AND KINETIC-PHYSICAL FACTORS BASED ON THE ISLAMIC TEXTS AND RESOURCES, THIS STUDY PROVIDES AN OPPORTUNITY FOR THE CURRICULUM DESIGNERS AND EDUCATIONISTS TO TAKE A NEW APPROACH TOWARDS APPLYING SCIENTIFIC RESULTS IN THE EDUCATIONAL SYSTEM. REGARDING THE SCIENTIFIC BASES AND ELEMENTS OF THIS MODEL, IT CAN BE CLAIMED THAT RECOGNIZING AND HAVING CONTROL OVER THE BRAIN-STRUCTURE AND ITS CHANGING PATTERN WILL FACILITATE LEARNING, IT ALSO MIGHT HELP US CONTROL OUR BEHAVIORS AND LIFE AS WELL AS OUR INTER/INTRA PERSONAL RELATIONSHIPS. HAVING THIS IMPORTANT RECOGNITION AND PERCEPTION, HUMAN BEINGS CAN PAVE THE WAY FOR THE REALIZATION OF HUMANITY AND WORLD PEACE. ALL OF THESE FACTS HAVE BEEN MENTIONED IN ISLAMIC TEXTS BY ISLAMIC EXPERTS AND AUTHORITIES CENTURIES AGO AND THE CURRENT STUDY AIMED TO EXTRACT AND CONFIRM THEM. ISLAMIZING EDUCATIONAL SCIENCES IN GENERAL AND BRAIN-BASED EDUCATION IN PARTICULAR, THE RESULTS OF THE CURRENT STUDY COULD RELIEVE EDUCATIONISTS AND AUTHORITIES OF THE COUNTRY'S EDUCATIONAL SYSTEM SO THAT THEY CAN EASILY MAKE USE OF THIS STUDY'S RESULTS.

آمار یکساله:  

بازدید 42

دانلود 0
نویسنده: 

LORAN F. | SHIRZAD A.

اطلاعات دوره: 
  • سال: 

    2016
  • دوره: 

    0
  • شماره: 

    7
تعامل: 
  • بازدید: 

    54
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

SAYYID QUTB, IBRAHIM HUSSEIN SHAZLY (1906.M), IN HIS LIFETIME OF MORE THAN 40 BOOKS AND 400 ARTICLES IN THE FIELDS OF LITERATURE, INTERPRETATION OF THE KORAN, RELIGION, LITERARY CRITICISM AND WROTE THE STORY. ASCEND TO PROMOTE THE SPIRIT OF JIHAD AND MARTYRDOM OF MOST OF THE THIRD PERIOD OF HIS LIFE, THAT SAYED MOST OF IT IS SPENT IN PRISON, HAS OVERSHADOWED. IN HIS VIEW, THE AIM IS TO ACHIEVE MARTYRDOM AND JIHAD IS THE ONLY WAY OUT OF OPPRESSION, STABILITY IN OPINION BETWEEN THE LINES OF THE POEM " YOU'RE FREE MY BROTHER " WAVE KNOCKS. ARTICLE SEEKS TO ANALYZE THE POEM "RECENT" BENEFIT FROM THE ANALYTICAL-DESCRIPTIVE TEXT TO REVEAL THE MAJOR THEMES OF THIS POEM.

آمار یکساله:  

بازدید 54

دانلود 0
اطلاعات دوره: 
  • سال: 

    2016
  • دوره: 

    0
  • شماره: 

    7
تعامل: 
  • بازدید: 

    42
  • دانلود: 

    0
چکیده: 

IN THIS LABORATORY STUDY PARAMETERS AFFECTING THE OVERALL HEAT TRANSFER COEFFICIENT (U) NANOFLUID STABILIZED ALUMINUM OXIDE WATER (WATER-AL2O3) IS DONE IN LAMINAR FLOW REGIME. FOR THE EXPERIMENTS, THE CAR WAS SIMULATED COOLING SYSTEM TO FLUID FLOW OF 0.2 M3/HR 0.5 BY A CENTRIFUGAL PUMP INCREASES TO CAUSE THE LAMINAR FLOW REGIME, (900<RENF<200). THE FLUID IS HEATED BY TWO 6000 WATT HEATED TO THE TEMPERATURE OF THE INLET FLUID TO THE HEAT EXCHANGER BY THE CONTROLLER PID VALUES OF 50, 65 AND 80OC CLOSE TO ITS OPERATING TEMPERATURE WHEN OPERATING A CAR RADIATOR. FLUID HEATED BY A FAN WITH VARIABLE SPEED AIR FLOW TO THE RADIATOR SENDS IN A CROSS SHAPE IS COOLED BY THE FAN CREATE 3 LEVELS 740, 870 AND M3/HR 1009 INLET AIR FLOW TO THE RADIATOR, AIR REYNOLDS NUMBER CHANGE , (700<REAIR <450). THE RESULTS SHOW THAT WITH INCREASING AIR SPEED AND NANOFLUID TPU OVERALL HEAT TRANSFER COEFFICIENT INCREASED, BUT THE INCREASE IN TEMPERATURE OF NANOFLUIDS INPUT, REDUCED OVERALL HEAT TRANSFER COEFFICIENT STEMS.

آمار یکساله:  

بازدید 42

دانلود 0
نویسنده: 

BARAZANDEH M.M.

اطلاعات دوره: 
  • سال: 

    2016
  • دوره: 

    0
  • شماره: 

    7
تعامل: 
  • بازدید: 

    54
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

OIL REFINING PROCESS INVOLVES DEGUMMING, NEUTRALIZATION, DECOLORIZATION, DEODORIZATION. IN THIS STUDY CRUDE SUNFLOWER OIL BLEACHED USING ACID-ACTIVATED BLEACHING EARTH (BENTONITE). AFTER REMOVING THE SOIL FROM OIL USING A FILTER, DUE TO HIGH SOIL ADSORPTION, ABOUT 20 TO 40 PERCENT OF THE OIL IT STAYS. THIS IS RUINING A LOT OF OIL. IN THIS STUDY, THE EXTRACTION AND CHARACTERISTICS OF SUNFLOWER OIL EXTRACTED FROM THE BLEACH EARTH HAS BEEN INVESTIGATED.

آمار یکساله:  

بازدید 54

دانلود 0
اطلاعات دوره: 
  • سال: 

    2016
  • دوره: 

    0
  • شماره: 

    7
تعامل: 
  • بازدید: 

    34
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

NITRATE AND NITRITE IONS ARE THE MOST IMPORTANT POLLUTANT OF SURFACE AND UNDERGROUND WATER RESOURCES. THAT PLUS ON NITROGEN NORMAL CYCLE AT AFFECT LOG IN WASTEWATER RAW HUMAN, INDUSTRIAL AND ALSO WASTE AGRICULTURE, SOLID WASTE AND DESTRUCTION FORESTS PASTURE, ENTER WATER AND SOIL. IN RECENT YEARS IN TERMS OF INCREASE PRODUCTION OF WASTEWATER AND SPREAD AGRICULTURAL ACTIVITIES AND DEVELOPMENT URBANIZATION, INCREASE AMOUNT OF THAT IN SOURCE OF WATERS, AND THAT CAN ADVERSE EFFECTS ON THE CONSUMERS HEALTH. THIS RESEARCH WITH THE AIM OF NITRATE AND NITRITE DENSITY MEASUREMENT ON CENTRAL PART OF KAHNOUJ CITY UNDERGROUND WATERS RESOURCES FOR 3 YEARS, JUNE 2011 UNTIL THE JANUARY 2014 WERE DONE. NITRATE AND NITRITE IONS MEASUREMENT BY SPECTROPHOTOMETER DEVICE (MODEL DR-2800). A RESULT SHOWED THE CONCENTRATION OF NITRATE AND NITRITE IN ANY OF THE SAMPLES EXCEEDED THE STANDARD VALUE THE WORLD HEALTH ORGANIZATION WAS PROPOSED. THE NITRATE CONTENT OF UP TO 9.03 (MG/L) IN WINTER AND MINIMUM 2.51 (MG/L) IN SUMMER AND THE AMOUNT OF NITRITE IN SUMMER UP TO .02 AT LEAST .007 (MG/L) IN WINTER IS VARIED.

آمار یکساله:  

بازدید 34

دانلود 0

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مرکز اطلاعات علمی SID
مرکز اطلاعات علمی SID
مرکز اطلاعات علمی SID
مرکز اطلاعات علمی SID
مرکز اطلاعات علمی SID
مرکز اطلاعات علمی SID
مرکز اطلاعات علمی SID
مرکز اطلاعات علمی SID