نتایج جستجو برای: سوییچ ovs

تعداد نتایج: 482  

2005
A. Henning M. Schär R. F. Schulte K. P. Pruessmann P. Boesiger

A. Henning, M. Schär, R. F. Schulte, K. P. Pruessmann, P. Boesiger Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Kanton Zurich, Switzerland, John Hopkins University, Baltimore, MD, United States Introduction In spite of significantly improved saturation pulses [1,2] sufficient outer volume (OVS) and especially fat suppression in MRSI could only be achieved in combinat...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده علوم پایه 1390

در این پایان نامه طراحی چند نانو سوئیچ بر پایه ترکیبات متاهتروفان ارائه شده است. متاهتروفان ها ترکیباتی هستند که از دو حلقه ی هتروآروماتیک تشکیل شده اند و دو موقعیت متا از این حلقه ها توسط زنجیرهای آلیفاتیک به یکدیگر متصل شده اند. این ترکیبات شیمی فضایی جالبی داشته و در برخی موارد شاخه های جانبی متصل کننده ی حلقه های آروماتیک در جهت های مختلفی نسبت به هم دیگر قرار می گیرند و در اثر کشش حلقه ی م...

2014
Volker Schirrmacher Philippe Fournier

Oncolytic viruses (OVs) selectively infect, replicate in, and kill tumor cells. For a long time, the therapeutic efficacy of OVs was thought to depend mainly on this mechanism of direct viral oncolysis. Nowadays, however, the post-oncolytic anti-tumor activity induced by the OV therapy is considered a key factor for an efficient therapeutic activity. The research topic addresses these issues an...

2012
Pia Knoeferle Helene Kreysa

During comprehension, a listener can rapidly follow a frontally seated speaker's gaze to an object before its mention, a behavior which can shorten latencies in speeded sentence verification. However, the robustness of gaze-following, its interaction with core comprehension processes such as syntactic structuring, and the persistence of its effects are unclear. In two "visual-world" eye-trackin...

2016
Antonio Marchini Eleanor M. Scott Jean Rommelaere E. Antonio Chiocca Martine L.M. Lamfers

Oncolytic viruses (OVs) target and destroy cancer cells while sparing their normal counterparts. These viruses have been evaluated in numerous studies at both pre-clinical and clinical levels and the recent Food and Drug Administration (FDA) approval of an oncolytic herpesvirus-based treatment raises optimism that OVs will become a therapeutic option for cancer patients. However, to improve cli...

2014
Dmitriy Zamarin Jedd D Wolchok

Identification of the immune suppressive mechanisms active within the tumor microenvironment led to development of immunotherapeutic strategies aiming to reverse the immunosuppression and to enhance the function of tumor-infiltrating lymphocytes. Of those, cancer therapy with antibodies targeting the immune costimulatory and coinhibitory receptors has demonstrated significant promise in the rec...

Journal: :IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 2023

Polarimetric decomposition of oriented buildings is challenging due to their variable orientation angles and structures. Both vegetated built-up areas generate the HV component namely cross-polarized scattering, leading an over-estimation volume scattering (OVS). It can cause misinterpretation mechanisms between areas. In this article, we use a pure model designed for completely random describe...

Journal: :Catalysts 2022

A one-pot and green synthesis methodology was successfully designed to prepare nitrogen-doped carbon (NC) cohered Fe3O4 nanoparticles with rich oxygen vacancies (Fe3O4-OVs/NC). The preparation achieved via cold-atmospheric-pressure air plasma using Fe2O3 as the only precursor, pyridine nitrogen source. Systematic characterization results of as-prepared Fe3O4-OVs/NC confirmed transition from Fe3...

Polyhedral Oligomeric Silsesquioxanes (POSSs) are a class of hybrid structures synthesized through hydrolytic condensation (Sol-Gel method) of trifunctional silane monomers under specific conditions. Octavinyl silsesquioxane (OVS) nanostructures are comprised of a rigid inorganic silica core surrounded by vinyl functional groups with an under-developed synthesis procedure. Generally, POSS morph...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده برق و کامپیوتر 1390

یکی ازمهمترین عیب های موتورهای سوئیچ رلکتانس ریپل گشتاور آنها می باشدکه برای کاهش آن، تحقیقات فراوانی انجام و روش های مختلفی ارائه شده است که در فصل مقدمه به این روش ها اشاره می شود. هدف از این پایان نامه ارائه روشی برای کنترل سرعت با در نظر گرفتن کاهش ریپل گشتاور این نوع موتور هاست. در ابتدای پایان نامه مروری بر زمینه های تحقیقاتی این موتورها و روش ها ی مختلف کاهش ریپل گشتاور انجام شده و در اد...

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