نتایج جستجو برای: compaction properties

تعداد نتایج: 876983  

Journal: :Coatings 2021

Depositing MoS2 coatings for industrial applications involves rotating the samples during PVD magnetron sputtering process. Here, we show that a 3-fold substrate rotation, along large target–substrate distance given by deposition unit, introduces porosity inside coatings. The mechanical properties and wear behavior strongly correlate with degree of porosity, which, in turn, depends on temperatu...

2012
Shailender Mohan

Due to various advantages such as high-precision dosing, manufacturing efficiency and patient compliance helped making tablets the most popular dosage forms among all available dosages forms. Compaction, which is an essential manufacturing step in the manufacture of tablets, mainly includes compression (i.e. reduction of volume of the powder under consideration and particle rearrangement) and c...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران - دانشکده مهندسی عمران 1385

روانگرایی دانه های ماسه ای سست اشباع و رسوبات غیر پلاستیک در طی بارگذاری لرزه ای یکی از مهمترین خطراتی است که در حین زلزله به ساختمانها وارد می آید بطوریکه این پدیده در اغلب زلزله های بزرگ مشاهده شده است این رساله عملکرد روانگرای خاکهای که در زمین پروژه اسکله شهید رجایی اصلاح شده را مورد برری قرار می دهد این منطقه با خاکریزی هیدرولیکی استحصال شده است. ویژگی ها و مشخصات خاک سایت که جزء ملزوم...

Journal: :The Journal of Cell Biology 1981
CJ Hollingshead DLD Caspar V Melchior DA Kirschner

Compacted membrane arrays are formed in the nerve myelin sheath by lowering the water activity (through evaporation or immersion in hypertonic solutions of nonelectrolytes or monovalent salts) or by binding specific cations (Ca(++), La(+++), and tetracaine at concentrations above 5-10 mM). X-ray diffraction observations on intact, hydrated nerves treated to induce compaction provide a control t...

2005
J. Lipiec V. V. Medvedev M. Birkas E. Dumitru

response to soil compaction associated with soil and crop type, and soil wetness at the time of load application and weather in Central and Eastern Europe are reviewed. The effects of soil compaction on the morphological and anatomical modifications of the roots were shown. The influence of soil compaction on plasticity in root growth and functioning in relation to structural discontinuity is d...

Journal: :civil engineering infrastructures journal 0
akbar ghazifard associate professor, department of geology, faculty of sciences, university of isfahan, isfahan, iran. seyed mahmoud fatemi aghda associate professor, faculty of erath science, kharazmi university, tehran, iran. mohammad hossein taherynia ph.d. student, faculty of erath science, kharazmi university, tehran, iran

withdrawal of oil and gas from reservoirs causes a decrease in pore pressure and an increase in effective stress which results to a reservoir compaction. reservoir compaction will result in surface subsidence through the elastic response of the subsurface. usually in order to determine the subsidence above a hydrocarbon field, the reservoir compaction must be first calculated and then the effec...

Journal: :زمین شناسی مهندسی 0
سعید هاشمی طباطبایی عطا آقایی آرایی

this paper describes the results of a study which was primarily directed to the determination of geotechnical properties of fine and coarse grain soils stabilized by lime obtained from taleghan, northwest of tehran to assess its suitability as construction material. soils were treated with lime mixtures in various portions between 3 to 9 percents by weight. the samples were cured for different ...

Journal: :Chemical & pharmaceutical bulletin 2001
S Watano J Furukawa Y Osako T Yasutomo

In our previous paper [Watano S. et al., J. Powder Technology Japan, 37, 362-370 (2000)], a novel compaction tester was developed to quantitatively evaluate the water dispersion condition of a wet kneaded mass prepared by a paddle type kneader. It has been demonstrated that the physical properties of pellets prepared by extrusion granulation after the kneading can be well predicted by the press...

2006
Farhana Rahman

Mechanistic pavement design procedures based on elastic layer theory require characterization of all pavement layer materials including subgrade soil. This paper discusses the subgrade stiffness obtained from a new compaction device called the Intelligent Compaction (IC) roller on highway embankment projects in Kansas. Three test sections on two routes were compacted using a single, smooth stee...

Journal: :علوم 0

the mechanical behaviour of rockfill materials and aggregates depends not only on particle size and compaction, but also on their strength and lithological properties. in this research two types of large triaxial and direct shear tests are performed on rockfill materials. this paper compares the stress-strain behaviour of sandstone and andesibasalt materials in triaxial compression tests (3006...

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