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Shenzhen, China

Plastination is a process of preservation of anatomical specimens by a delicate method of forced impregnation with curable polymers like silicone, epoxy or polyester resins with vast applications in medical fields of study. Plastination is a technique of tissue preservation developed by Dr. Gunther von Hagens in 1977. In this process, water and lipids in biological tissues are replaced by curable polymers (silicone, epoxy, polyester) which are hardened, resulting in dry, odorless and durable specimens. In this technique it is possible for us to treat every part of the body and tissues to preserve it for educational purposes. Nowadays there are new and vast varieties of applications for plastination in the educational and cultural areas. This invention has been recognized as an artistic phenomena among many authors. This article will pay attention to the history, basic principles of methods and also various applications of the plastination during the brief period of its creation. Source


Hyman P.,Great Technology
Communications of the ACM | Year: 2012

As college tuitions soar, various online models vie to educate college students worldwide-at no cost. © 2012 ACM 0001-0782/12/12. Source


Paciorek-Sadowska J.,Great Technology
Journal of Porous Materials | Year: 2012

The method for preparation of boroorganic compound with application of N,N0-di(methyleneoxy- 3-hydroxypropyl)urea and boric acid has been described. Then, the borate prepared was characterized mainly in the terms of its usability as a polyol component and fire retardant for production of the rigid polyurethane-polyisocyanurate foams. Method of preparation, the determination of foaming parameters, physicomechanical and fire properties of PUR-PIR foams as well as the results of tests have been presented. The recipe for foam preparation was modified by application of physical and chemical method of foaming. On the basis of the results, it was found that application of the new compound in recipe for production of foams is very favourable. The rigid foams obtained are characterized by lower brittleness, higher compressive strength, lower thermal conductivity and considerably lower flammability in comparison with a standard foam. © Springer Science+Business Media, LLC 2011. Source


Grunwald P.,Great Technology
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2015

Many commercial and military aircraft still use analog video, such as RS-170, RS-343, or STANEG 3350. Though the individual digital components many be inexpensive, the cost to certify and retrofit an entire aircraft fleet may be prohibitively expensive. A partial or incremental upgrade program where analog cameras remain in use but data is converted and processed digitally can be an attractive option. This paper describes Great River Technology's experience in converting multiple channels of RS-170 and multiplexing them through a concentrator to put them onto a single fiber or cable. The paper will also discuss alternative architectures and how ARINC 818 can be utilized with legacy systems. © 2015 COPYRIGHT SPIE. Source


Paciorek-Sadowska J.,Great Technology
Polimery/Polymers | Year: 2010

A method for the preparation of a boroorganic compound with the application of N,N'- -bis(methyleneoxy-2-hydroxyethyl)urea and boric acid has been presented. The prepared borate was evaluated mainly in respect of its applicability as a polyol component and antipirene for the production of polyurethane-polyisocyanurate foams. The preparation method, the determination of foaming parameters and methods for the determination of physicomechanical properties and flammability of the PUR-PIR foams were described and the results were presented. On the basis of studies, it was found that application of the new compound in the preparation of foams was advantageous. The rigid foam obtained was characterized by reduced brittleness, higher ultimate compressive strength and a significantly reduced flammability in comparison with standard foam. Source

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