نتایج جستجو برای: pd membranes

تعداد نتایج: 151295  

Journal: :journal of nanostructures 2016
p. safaei a. marjani m. salimi

the current study presents synthesis and characterization of high impact polystyrene - tio2 nanoparticles mixed matrix membranes for separation of carbon dioxide from nitrogen. the solution-casting method was used for preparation of membranes. the nano mixed matrix membranes were characterized using scanning electron microscopy to ensure the suitable dispersion of nano particles in high impact ...

2016
W. D. Michalak A. J. Gellman

a r t i c l e i n f o Understanding the interactions of hydrogen atoms with the surface and the subsurface regions of Pd is critical to the development of advanced energy technologies for hydrogen storage, hydrogen separations, and catalytic conversion processes. While many of the physical and chemical characteristics of the H 2 –Pd system are known, the kinetics and thermodynamics of H atom ab...

Journal: :PLoS Biology 2007
Guido Kroemer Klas Blomgren

P arkinson disease (PD) is the most frequent neurodegenerative disorder, affecting about 1% of people over 50 years old. It is caused by the progressive loss of dopaminergic (DA) neurons, accompanied by the accumulation of Lewy bodies, which are abnormal structures inside nerve cells that contain proteins such as α-synuclein, Parkin, and components of the ubiquitin proteasomal pathway (a cellul...

Objectives: In the early stages, most Parkinson’s patients display some degrees of voice and speech disorders. Speech disorders can negatively affect social interactions and human life, thus treatment plans for the disorders in the early stages might be further beneficial than the late stages. Therefore, we aimed to investigate on the effect of an intervention on Persian patients with early mil...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده عمران 1391

چگالی چیدمان (pd) اختلاط سنگدانه ها یکی از پارامترهای مهم و تعیین کننده در طرح اختلاط بتن می باشد. هر چه مقدار pd اختلاط سنگدانه ها بیشتر باشد، مقدار فضای خالی کمتری در بین سنگدانه ها وجود دارد و لذا به مقدار سیمان کمتری جهت پر نمودن فضاهای خالی احتیاج می باشد. در صورتی که مقدار خمیر سیمان در بتن ثابت باشد، افزایش میزان pd، منجر به افزایش کارایی در یک نسبت آب به سیمان (w/c) ثابت می شود و هم چنی...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده شیمی 1391

در این پروژه، روش سنتز تعدادی از کمپلکس های تک هسته ای اورتوپالادیت حاوی لیگاندهای تک دندانه و دو دندانه با استفاده از کمپلکس دو هسته ای تری فنیل فسفیت اولیه ارایه شده است. طی این مطالعه، کمپلکس دو هسته ای اورتوپالادیت 1)) [pd(?-cl)p(oph)2(oc6h4)]2 از رفلاکس pdcl2 با pdcl2[p(oph)3]2 در حلال تولوئن به مدت پنج ساعت بدست آمده است. از واکنش این کمپلکس با لیگاندهای تک دندانه تری فنیل فسفین (pph3)، 2...

Ehsan Lajmiri, Mohammadreza Alijani, Moosa Javdani, Rasool Rahimi Junqani,

Parkinson’s Disease (PD) is a chronic, progressive, neurodegenerative disorder with motor and non-motor signs and symptoms. PD is caused by idiopathic degeneration of dopamine-producing cells in the substantia nigra, located in the midbrain. Recently, Trace elements have been recognized to play an important role in the development of Parkinson’s disease (PD). The aim of this review ...

ااشرفی اوصالو, مصطفی, توفیقی, اصغر, عبدی سروه, اسماعیل, قادری پاکدل, فیروز,

Background and Aims: Parkinson Disease (PD) as a second neurodegenerative disease has grown in developed and industrial countries due to high life span, and in Iran it is considered an important neurodegenerative disease either. The drug therapy of PD must be paralleled with other treatments because the age of PD occurrence has decreased in recent decades and disturbed active population life st...

Herein, a stepwise electrodeposition technique was used to synthesize the Pd based nanoparticles on indium-tin oxide (ITO) electrodes. First of all, Pd nanoparticles were electrodeposited on ITO via one step electrodeposition technique. Furthermore, Au was electrodeposited on Pd. Finally, Co was electrodeposited on Au and Pd electrodeposited ITO electrode via stepwise electrodeposition techniqu...

اکبری ازیرانی, اصغر, مذهب جعفری, علی ,

In this paper Multi conductor transmission line model (MTLM) was used for partial discharge (PD) localization in power transformers’ windings. The parameters of the model were computed considering practical issues of power transformer design. To decrease computational complexity of the model, two methods for calculation of model parameters were studied and the most suitable method was cho...

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