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متن کامل


نویسنده: 

Ghorbanalizadegan Shadi

اطلاعات دوره: 
  • سال: 

    2016
  • دوره: 

    3
تعامل: 
  • بازدید: 

    296
  • دانلود: 

    0
چکیده: 

HUMAN FROM THE BEGINNING OF THE CREATION GET INSPIRED FROM THE ENVIRONMENT AND THEIR AROUND NATURE AND PUT IT ON CREATIVITY AND DESIGN. BUT OVER TIME AND THE IMPROPER USE OF NATURE AND ITS RESOURCES, WAS FACED WITH MANY PROBLEMS. PROBLEMS SUCH AS AIR POLLUTION THAT GRIPPED THE MAJOR CITIES OF THE WORLD AND INVOLVED SERIOUS THREATS TO HUMAN LIFE. THESE PROBLEMS HAVE PROMPTED PEOPLE TO LIVE IN HARMONY WITH NATURE, HENCE WAS RAISED THE BIONICS SCIENCE THAT WAS IN SYNC WITH NATURE AND GET INSPIRED BY IT. DUE TO THE ENERGY CRISIS AND NATURAL RESOURCES, ARCHITECTS HAVE BEEN WORKING WITH A NEW ATTITUDE IN BIONIC ARCHITECTURAL AND STRUCTURAL SOLUTION TO GET OUT OF THIS CRISIS AND PRESERVE THEIR ENERGY AND FOOD IN THEIR FUTURE WORLD SO THAT, WITH THE COMBINATION BETWEEN NATURE AND TECHNOLOGY A STEP TOWARD ENERGY SELF-SUFFICIENCY AND FOOD IN THEIR FUTURE WORLD. FAMILIARIZE WITH THE HISTORY OF BIONIC SCIENCE, BASIC DEFINITIONS, CONCEPTS AND PRINCIPLES OF SCIENCE PERMIT A FIRST STEP TO TAKING ADVANTAGE OF IT IN A VARIETY OF FIELDS INCLUDING ARCHITECTURE. THE AIM OF THIS RESEARCH WAS RECOGNITION OF CONCEPT OF BIONIC ARCHITECTURAL AND DETERMINE ITS PLACE IN ARCHITECTURE, IN ORDER TO ACHIEVE A TYPE OF ARCHITECTURE THAT SYNC WITH NATURE WITH A ITS APPLICATION AND THE PRINCIPLE OF MINIMUM ENERGY CONSUMPTION AND GREEN ARCHITECTURE TO CREATE AN OPTIMAL PLAN AND ANSWER TO THE EXISTING PROBLEMS IN THE BEST POSSIBLE WAY. THE RESEARCH METHODOLOGY WAS THROUGH ANALYSIS VIA THE SURVEY THE BIONIC ARCHITECTURE AND FOR DATA COLLECTION WAS USED THE LIBRARY STUDIES.

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بازدید 296

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نویسنده: 

AKBARI SIAVASH

اطلاعات دوره: 
  • سال: 

    2016
  • دوره: 

    4
تعامل: 
  • بازدید: 

    285
  • دانلود: 

    0
چکیده: 

PRESENCE OF AUTOMOTIVE INDUSTRY CAN BE AN INDICATOR FOR ASSESSING INDUSTRIAL STATUS OF A COUNTRY, BECAUSE AUTOMOTIVE INDUSTRY PRACTICALLY ENHANCES THE KNOWLEDGE LEVEL IN THE COUNTY AND AFTER A WHILE A COUNTRY EQUIPPED WITH THIS INDUSTRY CAN BE ENABLED IN TENS OF OTHER FIELDS. FEATURING BY HIGH LEVEL OF FINANCIAL POWER, THIS INDUSTRY CAN INCREASE RESEARCH AND DEVELOPMENT ACTIVITIES AND PURCHASING TECHNICAL SCIENCE FROM OUTSIDE AND AS DISCUSSED EARLIER, THIS BRINGS ABOUT DEVELOPMENT ACROSS OTHER SECTORS. EXISTENCE OF MUSEUM AND CAR EXHIBITION IS ONE OF CULTURAL NECESSITIES AND CONSIDERING THE ACTIVITY AND INFLUENCE AREA, IT CAN BE CONSIDERED AS A HUGE SCHOOL SERVING EDUCATION AND EXPANSION OF SCIENCE AMONG ALL SOCIETY MEMBERS. MEANWHILE, ATTENTION TO EMPIRICAL SCIENCES AND HUMAN EXPERIENCE IN INDUSTRY AGE IS A FACTOR OF FORMATION OF MUSEUM AND FAIRS. CONSIDERING THE RELEVANCE OF THIS INDUSTRY, ARCHITECTURES AND DESIGNERS BELIEVE THAT DESIGNS INSPIRED FROM NATURE CAN EFFECTIVELY ASSIST IN REDUCTION OF ENVIRONMENTAL HARMS. BIONICS, OR BIOMETRICS OR CREATIVE BIOENGINEERING APPLIES EXISTING BIOLOGICAL SYSTEMS AND METHODS FOUND IN NATURE IN ENGINEERING AND MODERN TECHNOLOGY SYSTEMS.

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بازدید 285

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نویسندگان: 

Tan J. | Dong P. | Gao J. | Wang C. | Zhang L.

اطلاعات دوره: 
  • سال: 

    2023
  • دوره: 

    16
  • شماره: 

    7
  • صفحات: 

    1316-1330
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    25
  • دانلود: 

    0
چکیده: 

It is essential to maintain the aerodynamic performance of the air-conditioning system meanwhile reducing the noises (including aerodynamic, broadband, and discrete noises), determining the consumer's comfort level. In this work, depending on the coupling of the wavy leading-edge and the seagull airfoil, the aeroacoustics noise and aerodynamic performance of the impellers with the coupling bionic blade were investigated in detail. The results indicate the aerodynamic performance was improved by the coupling bionic optimization. Moreover, the total pressure efficiency (η) of the coupling bionic blade increases by 2. 28% in comparison to the original blade. Furthermore, A smaller static differential pressure is observed between the suction and pressure sides, and vortices and backflows from the pressure side to the suction side are hampered, causing a reduction in turbulence noise. Additionally, the broadband noise of the coupling bionic blade decreases by 3. 59 dB. Besides, the coupling bionic blade improves the directivity of the sound pressure level, especially in the middle-frequency and low-frequency region, resulting in a decrease of 7. 9 dB for the aeroacoustics noise of the coupling bionic blade. What's more, the modal analysis demonstrates the security of the designed coupling bionic blade. In generally, this work provides some inspiration to design axial flow fans with excellent aerodynamic performance and low-noise characteristics.

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بازدید 25

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نویسندگان: 

قیابکلو زهرا

اطلاعات دوره: 
  • سال: 

    1392
  • دوره: 

    18
  • شماره: 

    3
  • صفحات: 

    17-24
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    1631
  • دانلود: 

    1070
چکیده: 

لطفا برای مشاهده چکیده به متن کامل (PDF) مراجعه فرمایید.

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بازدید 1631

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نویسندگان: 

ناری قمی مسعود

اطلاعات دوره: 
  • سال: 

    1397
  • دوره: 

    7
  • شماره: 

    13
  • صفحات: 

    107-125
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    1681
  • دانلود: 

    878
چکیده: 

نقش علوم انسانی در تفکر و عمل مهندسی، امروزه به واسطه ی ابهامات موجود در تکنولوژی مدرن، تلقی آن از توسعه و تبعات آن برای آینده ی بشر، یک ضرورت است؛ در مورد بیونیک معماری به عنوان یک رشته ی کارشناسی ارشد، عنوان بیونیک نباید به صورت پیش فرض، مثبت تلقی شود و از انتقادات اخلاقی و انسانی آن صرف نظر شود. در این نوشتار با روش تفسیری و استدلال منطقی، ضرورت رویکرد انتقادی در آموزش مبانی انسانی معماری بیونیکی در دو محور فلسفه ی تکنولوژی و اخلاق تکنولوژی تبیین شده است. در محور فلسفه، در دو بخش هستی شناسی و معرفت شناسی تکنولوژی های بیو در معماری بحث شده و در محور اخلاق، موضوعات مرتبط با انسان و محیط زیست، طرح گردیده است؛ با مقایسه ی سرفصل درس «حکمت هنر» با سرفصل های دروس مشابه در رشته های مهندسی دیگر در ایران و نیز برخی دانشگاه های آمریکایی، ضرورت بازنگری در آن، نشان داده شده است. نتیجه ی اصلی پژوهش آن است که به رغم ضرورت پرداختن به نگرش حکمت اسلامی در آموزش معماری بیونیک، این امر در وضع کنونی ناکافی است. در بحث ارائه شده در اینجا، ضرورت توجه به جایگاه نقادی از تکنولوژی، تعیین شده و تحلیل، به مثابه ی تعمیق نگرش انتقادی و نه توصیف صِرف روندهای جدید تکنولوژیک، به عنوان ضرورتی که باید در کانون مبحث درسی نشانده شود، مطرح شده است که بتواند تفکر عمیق تر دانشجویان را با هدف توسعه ی ارزشی و اخلاقیِ تکنولوژی معماری، به همراه داشته باشد.

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بازدید 1681

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اطلاعات دوره: 
  • سال: 

    1401
  • دوره: 

    52
  • شماره: 

    3
  • صفحات: 

    189-194
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    152
  • دانلود: 

    38
چکیده: 

Intracytoplasmic sperm injection (ICSI) is one of the most successful techniques of Assisted Reproductive Technology (ART) and is mostly in use for the treatment of infertility with male factors. In this method, before injecting sperm into the intracytoplasmic of the oocyte, cumulus cells around the oocyte must be stripped to facilitate the injection process. To achieve this, both enzymatic and mechanical methods are used in embryological laboratories for denudation, which has major deficiencies, including the possibility of damaging the oocyte prior to the injection process. In this research, a microfluidic-based device is introduced for the separation of cumulus cells around the oocyte with minimum manual operations. The results prove high efficiency, and non-destructive denudation of the oocyte with the reduced amount of culture medium leads to the low-cost preparation process of oocytes. The process can also be integrated with ICSI chips under development and will be reported shortly.

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بازدید 152

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مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
نویسندگان: 

نشریه: 

SMALL

اطلاعات دوره: 
  • سال: 

    2022
  • دوره: 

    18
  • شماره: 

    12
  • صفحات: 

    0-0
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    10
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

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بازدید 10

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اطلاعات دوره: 
  • سال: 

    2014
  • دوره: 

    12
تعامل: 
  • بازدید: 

    158
  • دانلود: 

    0
چکیده: 

INTRODUCTION: THE RPR SYPHILIS SCREENING TEST IS A MACROSCOPIC NON- TREPONEMAL FLOCCULATION CARD TEST FOR DETECTION OF REAGIN, AN ANTIBODY LIKE SUBSTRATE PRESENT IN SERUM OR PLASMA AND SPINAL FLUID FROM SYPHILITIC PERSONS. REAGINS ARE A GROUP OF ANTIBODIES AGAINST SOME COMPONENTS OF THE DAMAGE TISSUES FROM PATIENTS INFECTED BY TREPONEMA PALLIDUM, THE AGENT WHICH CAUSES THE SYPHILIS. AIM: WE COMPARED TWO MANUAL RAPID PLASMA REAGIN (RPR) ASSAY KITS, ENISON (IRAN) AND BIONIC (GERMANY).

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اطلاعات دوره: 
  • سال: 

    2016
  • دوره: 

    4
تعامل: 
  • بازدید: 

    194
  • دانلود: 

    0
چکیده: 

THE MOST IMPORTANT ISSUE IN THE DESIGN OF HIGH-RISE BUILDING IS THE LATERAL LOAD SYSTEM THAT ACCORDINGLY, THE SELECTION OF A STRUCTURAL SYSTEMS THAT CAN DUCTILITY, STIFFNESS, AND SUFFICIENT RESISTANCE BASED ON VALID REGULATIONS PROVIDE IS THE MOST IMPORTANT PRINCIPLE IN THE FIELD OF HIGH-RISE BUILDING BECAUSE THE PARAMETERS OF STIFFNESS, DUCTILITY AND STRUCTURAL RESISTANCE WILL CHANGE WITH VARIATION THE TYPE OF LATERAL LOAD SYSTEMS A RELATIVELY LARGE AMOUNT. THEREFORE, IN THIS STUDY, TWO STRUCTURAL SYSTEMS TUBE AND DIAGRID IN SIMILAR STRUCTURES (IN PLAN, HEIGHT, LOADING, ETC) WITH 30 AND 38 FLOORS HAS BEEN MODELLED IN SOFTWARE ABAQUS AND AFTER THE CALCULATION OF EARTHQUAKE FACTORS ON STRUCTURES MENTIONED (BY PROGRAM WRITTEN IN MATLAB BASED ON 2800 REGULATION). ANALYSIS OF STATIC AND LINER DYNAMIC AND NONLINEAR STATIC (PUSHOVER), RESPECTIVELY IS DONE ON STRUCTURES 30 AND 38 FLOORS OF THE DIAGRID AND 30 AND 38 FLOORS OF THE TUBE AND FINALLY AFTER ANALYSING OF 4 STRUCTURE STUDIED, THE ADVANTAGES AND DISADVANTAGES AND RELATIVE SUPERIORITY OF THE TWO SYSTEMS LATERAL LOAD IN STRUCTURES MENTIONED BASED ON STIFFNESS PARAMETERS, RELATIVE DISPLACEMENT, DUCTILITY AND RESISTANCE COMPARED WITH EACH OTHER. THE IMPORTANCE OF THIS COMPARISON IS THAT BASED ON ITS FINDING CAN BE DETERMINED THE SYSTEM SUITABLE LATERAL LOAD BASED ON THE SEISMIC HAZARD AT THE SITE OF CONSTRUCTION. THE RESULTS OF THE ABOVE ANALYSIS SHOW THAT THE DIAGRID STRUCTURES HAVE STIFFNESS HIGHER THAN THE TUBE STRUCTURES BUT ITS PLASTICITY IS LOWER THAN THAT THE TUBE SYSTEM.

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نویسندگان: 

Ma C. | Zhang K. | Zhang B. | Zhao B.

اطلاعات دوره: 
  • سال: 

    2021
  • دوره: 

    14
  • شماره: 

    5
  • صفحات: 

    1317-1327
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    29
  • دانلود: 

    0
چکیده: 

The mucous membrane on the fish surface has excellent drag reduction performance. The mucous membrane can be regarded as the viscoelastic fluid, and a bionic friction drag reduction model is proposed with the consideration of a Carreau viscoelastic model-based mucus secretion process. Then, the drag reduction effect of the mucous membrane on the classical wall turbulence boundary layer is investigated by large-eddy simulations. Results show that the bionic mucous membrane is conducive to reducing the turbulence, and can achieve a drag reduction rate of about 14%. This study provides a hydrodynamics understanding of the drag reduction characteristics of the bionic mucous membrane.

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بازدید 29

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