نتایج جستجو برای: narrow nano

تعداد نتایج: 107199  

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده علوم اجتماعی 1392

هدف:اثربخشی آموزش مهارت های دهلیزی بر عملکرد مهارت های حل مسئله دانش آموزان دختر با مشکلات ریاضیاست.روش: روش پژوهش از نوع شبه آزمایشی ودر این تحقیق عبارتست از کلیه دانش آموزان دختر7-8 ساله منطقه 14 شهر تهران در در طی 3 ماهه اول سال 1392که به دلیل مشکلات ریاضی که تعداد آنها 24نفر (12 نفر دختر دارای مشکلات ریاضی، 12 نفر گروه کنترل) بودند. نمونه گیری به روش هدفمند و از طریق تست کی مت(اختلال ریاضی...

2016
Mária Csete Gábor Szekeres András Szenes Balázs Bánhelyi Tibor Csendes Gábor Szabó

Dispersion characteristics of four types of superconducting nanowire single photon detectors, nano-cavity-array-(NCA-), nano-cavity-deflector-array-(NCDA-), nano-cavity-double-deflectorarray-(NCDDA-) and nano-cavity-trench-array-(NCTA-) integrated (A-SNSPD) devices were optimized in three periodicity intervals commensurate with half-, three-quarterand one surface plasmon polariton wavelength. T...

Abdolreza Samimi, Mojtaba Ghadiri

To resolve handling problem of nanoparticles, due to their small size, a new methodology of electro-spraying and freeze-drying was developed for colloidal nanoparticles of silica and titania to transform them to solid macro-scale nanoparticle assemblies.  The assemblies were then redispersed in an aqueous system to investigate the effect of formulation of original solutions and the process ...

Journal: :iranian journal of aquatic animal health 0
h ahari

nowadays, the use of innovative nano-technology in the food industry quality control has significantly increased and it is widely employed in numerous fields such as diagnosis of microbial toxin of foods using nano-biosensors, increasing food shelf-life with the help of nano-clay and nano-silver packaging, as well as changing some of the unpleasant organoleptic properties such as taste, color, ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2021

Biominerals such as seashells, corals skeletons, bone, and enamel are optically anisotropic crystalline materials with unique nano- micro-scale organization that translates into exceptional macroscopic mechanical properties, providing inspiration for engineering new superior biomimetic structures. Here we use particles of Seriatopora aculeata coral skeleton a model demonstrate, the first time, ...

2017
Sujuan Wu Cong Wang Yinfang Cui Weichang Hao Tianmin Wang Pascal Brault

Journal: :Polymers for Advanced Technologies 2021

Nano fibrous membranes core-shell of poly(lactic acid) (PLA) and poly(?-caprolactone) (PCL), encapsulating 1 wt% curcumin, are fabricated by coaxial electrospinning technique. Morphology physical properties, as well the release studied compared with neat PLA PCL individually spinned. Morphological analysis shows for all samples obtainment fiber oriented in random way, without defect a narrow di...

2006
T. M. Biewer R. Maingi H. Meyer R. E. Bell C. Bush S. Kaye S. Kubota B. LeBlanc K. Williams S. Zweben

A. A. Babaluo B. Bayati P. Ahmadian Namini

Due to unique applications of palladium nanoparticles, synthesis of these nanoparticles by a simple and low cost method is very important. In this work, Pd nanoparticles were synthesized with narrow size distribution by loading metal salt (Pd(OAc)2 ) into the polymeric matrix (PEG) as reducing agent and stabilizer. Also, the effect of metal salt concentration and PEG molecular weight on the con...

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