نتایج جستجو برای: ماشین های cnc

تعداد نتایج: 482817  

Journal: :Critical care and resuscitation : journal of the Australasian Academy of Critical Care Medicine 2010
Nic Yacopetti Evan Alexandrou Tim R Spencer Steven A Frost Patricia M Davidson Greg O'Sullivan Ken M Hillman

OBJECTIVE To compare clinical outcomes of elective central venous catheter (CVC) insertions performed by either a clinical nurse consultant (CNC) or anaesthetic medical staff (AMS). DESIGN, SETTING AND PARTICIPANTS Prospective audit of a convenience sample of consecutive CVC insertions between July 2005 and October 2007 at a metropolitan teaching hospital in Sydney, Australia. The sample incl...

2012
Samuel G. Cox Hyunjung Kim Aaron Timothy Garnett Daniel Meulemans Medeiros Woojin An J. Gage Crump

The neural crest (NC) is a vertebrate-specific cell population that exhibits remarkable multipotency. Although derived from the neural plate border (NPB) ectoderm, cranial NC (CNC) cells contribute not only to the peripheral nervous system but also to the ectomesenchymal precursors of the head skeleton. To date, the developmental basis for such broad potential has remained elusive. Here, we sho...

2009
Wikan SAKARINTO Hiroshi NARAZAKI Keiichi SHIRASE

This paper describes a model of knowledge-based system for integrating CAM and CNC operations. In detail, the main concern of integration is driven by proposed standardized check list as a part of product data which is useful for capturing and managing the knowledge based activities done by CAM operators and CNC machine operators in assessing product data before proceeded into CNC machining pro...

2009
Manocher Djassemi

In this paper the application of parametric programming to CNC machining is discussed. As one of the less frequently utilized features of CNC machines, parametric programming has the potential to increase the efficiency of CNC operations. This feature is particularly beneficial to companies with group technology manufacturing where parts with similar design or operational requirements are proce...

ابوالقاسم خزاعیان محراب مدهوشی محمد آقاخانی

این تحقیق با هدف ارزیابی مشخصه های (پارامترهای) تاثیرگذار بر کیفیت سطح چوب پالونیا در فرآیند ماشین کاری CNC انجام گرفت. به همین منظور چوب مورد نیاز از گرده بینه‌های پالونیای موجود در کارگاه دانشکده چوب و کاغذ تهیه  شد. سپس به کمک اره نواری برش‌های اولیه انجام گرفت. به منظور خشک کردن نمونه‌ها در هوای آزاد، الوارها در فضای سرپوشیده داراب بندی شدند. در نهایت نمونه ها به ابعاد 15x10x5/2 سانتیمتر تب...

2014
Wenbang Wei Wei Song Shuangbao Zhang

Hydroxyapatite/poly(vinyl alcohol) (Hap/PVA) composites have been proposed as a promising biomaterial for use in articular cartilage repair. In this study, HAp/PVA composite gels reinforced with cellulose nanocrystals (CNC) were prepared using the freeze/thaw method. The influence of CNC as a reinforcement on the structure of composite gels was investigated via Fourier transform infrared spectr...

Journal: :Biomacromolecules 2015
Farhan Ansari Michaela Salajková Qi Zhou Lars A Berglund

In this work, the problem to disperse cellulose nanocrystals (CNC) in hydrophobic polymer matrices has been addressed through application of an environmentally friendly chemical modification approach inspired by clay chemistry. The objective is to compare the effects of unmodified CNC and modified CNC (modCNC) reinforcement, where degree of CNC dispersion is of interest. Hydrophobic functionali...

2008
Y. C. Kao H. Y. Cheng Y. C. Chen

This paper describes the development of a virtual CNC controller. Controller is the major driver for a CNC machine. Similarly, virtual controller is the key driving component for a virtual CNC, which is a three-dimensional digitized physical CNC. A virtual CNC can exist in every PC serving as the complementary safer counterpart in lecturing and learning the hand on operation of expensive machin...

Journal: :Orphanet Journal of Rare Diseases 2006
Jérôme Bertherat

The Carney complex (CNC) is a dominantly inherited syndrome characterized by spotty skin pigmentation, endocrine overactivity and myxomas. Skin pigmentation anomalies include lentigines and blue naevi. The most common endocrine gland manifestations are acromegaly, thyroid and testicular tumors, and adrenocorticotropic hormone (ACTH)-independent Cushing's syndrome due to primary pigmented nodula...

2017
Ketan Mathavan Vikram Khedgikar Vanessa Bartolo Dominique Alfandari

During development, a multi-potent group of cells known as the cranial neural crest (CNC) migrate to form craniofacial structures. Proper migration of these cells requires proteolysis of cell adhesion molecules, such as cadherins. In Xenopus laevis, preventing extracellular cleavage of cadherin-11 impairs CNC migration. However, overexpression of the soluble cleavage product (EC1-3) is capable ...

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