نتایج جستجو برای: microperiodic function

تعداد نتایج: 1212948  

Journal: :Continuum Mechanics and Thermodynamics 2021

Abstract The objects of consideration are thin linearly thermoelastic Kirchhoff-Love-type circular cylindrical shells having a periodically microheterogeneous structure in circumferential and axial directions ( biperiodic ). aim this contribution is to formulate discuss two new averaged mathematical models for the analysis selected dynamic thermoelasticity problems under consideration: non-asym...

2008
Sourabh Ghosh Sara T. Parker Xianyan Wang David L. Kaplan Jennifer A. Lewis

Three–dimensional, microperiodic scaffolds of regenerated silk fibroin have been fabricated for tissue engineering by direct ink writing. The ink, which consisted of silk fibroin solution from the Bombyx mori silkworm, was deposited in a layer-by-layer fashion through a fine nozzle to produce a 3D array of silk fibers of diameter 5 mm. The extruded fibers crystallized when deposited into a meth...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده ادبیات و علوم انسانی 1393

abstract target-oriented approaches to translation studies are regarded as recent theories of translation. one of the most famous theories among these approaches is descriptive translation studies presented by toury (1995). this theory gives a new dimension to translation studies and gives importance to the descriptive rather than prescriptive studies. it also identifies three sets of transla...

Journal: :Polymer International 2021

Poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-co-TrFE)) is an electroactive polymer with growing interest for applications in biomedical materials and flexible electronics. In this study, a solvent-free additive manufacturing technique called melt electrowriting (MEW) has been utilized to fabricate well-defined microperiodic structures of the copolymer (P(VDF-co-TrFE)). MEW highly visco...

2009
Robert A. Barry Robert F. Shepherd Jennifer N. Hanson Ralph G. Nuzzo Pierre Wiltzius Jennifer A. Lewis

The ability to pattern soft materials at the microscale is critical for several emerging technologies, including tissue-engineering scaffolds, photonic crystals, sensors, and self-healing materials. Hydrogels are an important class of soft materials that can be fabricated in the form of 3D microperiodic structures by colloidal templating or interference lithography. However, neither approach al...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1376

this thesis deals with the construction of some function algebras whose corresponding semigroup compactification are universal with respect to some properies of their enveloping semigroups. the special properties are of beigan a left zero, a left simple, a group, an inflation of the right zero, and an inflation of the rectangular band.

2002
Paul V. Braun

Introduction Colloidal self-assembly has been widely explored as a route to photonic materials. Theoretical work has demonstrated that a three dimensional photonic band gap can be generated from an inverse FCC structure if fairly rigorous dielectric contrast conditions are met. It is because of this finding that a multitude of research groups are investigating the self-assembly of colloidal par...

پایان نامه :دانشگاه تربیت معلم - سبزوار - دانشکده علوم پایه 1392

ایده فضا - زمان ناجابجایی ncبا پارامتر ?_?? به عنوان تانسوری پاد متقارن و ثابت، اگر چه برای رفع واگرایی فرا بنفش نظریه میدان های کوانتومی مناسب بود، اما نتوانست تقارن لورنتس را حفظ کند. چارچوبی که، پارامتر ناجابجایی را به عنوان مختصاتی از سیستم و حفظ کننده تقارن لورنتس معرفی می کرد، راه حلی برای این چالش جدید بود و توسط doplicher–fredenhagen–roberts–amorim ارائه شد. این چارچوب، معرف فضای ناجا...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1377

this thesis deals essentially (but not from all aspects) with the extension of the notion of semigroup compactification and the construction of a general theory of semitopological nonaffine (affine) transformation semigroup compactifications. it determines those compactification which are universal with respect to some algebric or topological properties. as an application of the theory, it is i...

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