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Search Results: 1 - 10 of 46940 matches for " Ren Feng "
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The Construction of Chinese Government Accountability System on Food Safety
Feng REN
Cross-Cultural Communication , 2011, DOI: 10.3968/j.ccc.1923670020110703.212
Abstract: Government plays an important role in food safety. In order to effectively monitor the government’s liability on food safety in China, it is necessary to construct a comprehensive government accountability system, which contains the subject, object, principles and procedures of accountability. Key words: Food safety; Government; Accountability Résumé Le gouvernement chinois joue un r le hautement responsable en matière de la sécurité alimentaire. Il est nécessaire d’établir un système de redevabilité sur la sécurité alimentaire au sein du gouvernement afin que cedernier effectue ses responsabilitées de la supervision et de garantir la sécurité alimentaire. Y compris le sujet, l’objet, les principes et la procédure de l’obligation de rendre compte des autoritées en matière de la sécurité alimentaire. Mots clés: la sécurité alimentaire; Le gouvernement; la redevabilité
The Law Priority Doctrine and China’s Food Safety Legislation
Feng REN
Canadian Social Science , 2011, DOI: 10.3968/j.css.1923669720110705.162
Abstract: As one of the important doctrines in administration law, the law priority doctrine is an embodiment of the rule of administration law principle. Building up the system of the food safety legislation and the exertion of legislative power should follow the requirements of the law priority doctrine so that rights of food consumers could be protected and the administration organs could use their power according to laws. Key words: The Law Priority Doctrine; Food Safety Legislation; Food safety laws Résumé Les principes de la priorité juridique sont des principe de droit administratif de la légalité, et manifestant l’importance du principe de droit administratif. Les Principes juridiques donnent la priorité législation sur la sécurité alimentaire et les exigences de la construction du système, l'exercice du pouvoir législatif devrait être compatible avec cette exigence qui permettra à l'administration exécutive conformément à la loi de protéger les droits des consommateurs d'aliments. Mots clés: Principe prioritaires juridiques; Législation sur la sécurité alimentaire; Loi de la sécurité alimentaire
On a Conjecture of Milnor about Volume of Simplexes
Ren Guo,Feng Luo
Mathematics , 2005,
Abstract: We establish the second part of Milnor's conjecture on the volume of simplexes in hyperbolic and spherical spaces. A characterization of the closure of the space of the angle Gram matrices of simplexes is also obtained.
Rigidity of polyhedral surfaces, II
Ren Guo,Feng Luo
Mathematics , 2007, DOI: 10.2140/gt.2009.13.1265
Abstract: We study the rigidity of polyhedral surfaces using variational principle. The action functionals are derived from the cosine laws. The main focus of this paper is on the cosine law for a non-triangular region bounded by three possibly disjoint geodesics. Several of these cosine laws were first discovered and used by Fenchel and Nielsen. By studying the derivative of the cosine laws, we discover a uniform approach on several variational principles on polyhedral surfaces with or without boundary. As a consequence, the work of Penner, Bobenko-Springborn and Thurston on rigidity of polyhedral surfaces and circle patterns are extended to a very general context.
Cell decompositions of Teichmüller spaces of surfaces with boundary
Ren Guo,Feng Luo
Mathematics , 2010,
Abstract: A family of coordinates $\psi_h$ for the Teichm\"uller space of a compact surface with boundary was introduced in \cite{l2}. In the work \cite{m1}, Mondello showed that the coordinate $\psi_0$ can be used to produce a natural cell decomposition of the Teichm\"uller space invariant under the action of the mapping class group. In this paper, we show that the similar result also works for all other coordinate $\psi_h$ for any $h \geq 0$.
Application of Microsurgery in Facial Trauma Reconstruction  [PDF]
Li-Ren Chang, Seng-Feng Jeng
Modern Plastic Surgery (MPS) , 2012, DOI: 10.4236/mps.2012.23017
Abstract: This article is to review the role of microsurgery in facial trauma reconstruction. Microsurgery was developed since 1960s and had been applied on facial trauma from 1970s to treat amputated scalp, nose, ear and lip. Microsurgical replantation of scalp and small parts of face restores function and achieves aesthetic results, but small size of vessels and venous drainage problems are most technical challenging. In this article, we reviewed many talented authors’ work to solve those problems in facial tissue replantation. If defects are huge, we need microsurgical free flaps for reconstruction. The current workhorse is anterolateral thigh flap and we reviewed the versatility and new concepts of the flap. Development of perforator flaps was another milestone of flap reconstruction because of better cosmetic result and lower donor site morbidity. We reviewed the concepts, history and application of perforator flaps. Finally, facial replantation developed in recent 5 years to treat extremely large facial defects which cannot be reconstructed with microsurgical flaps and traditional flaps alone. The task is complex and needs a large team to support the whole procedure. We also reviewed the facial allotransplantation, which is the ultimate application of microsurgery in facial trauma reconstruction.
Enzymes Are Enriched in Bacterial Essential Genes
Feng Gao, Randy Ren Zhang
PLOS ONE , 2011, DOI: 10.1371/journal.pone.0021683
Abstract: Essential genes, those indispensable for the survival of an organism, play a key role in the emerging field, synthetic biology. Characterization of functions encoded by essential genes not only has important practical implications, such as in identifying antibiotic drug targets, but can also enhance our understanding of basic biology, such as functions needed to support cellular life. Enzymes are critical for almost all cellular activities. However, essential genes have not been systematically examined from the aspect of enzymes and the chemical reactions that they catalyze. Here, by comprehensively analyzing essential genes in 14 bacterial genomes in which large-scale gene essentiality screens have been performed, we found that enzymes are enriched in essential genes. Essential enzymes have overrepresented ligases (especially those forming carbon-oxygen bonds and carbon-nitrogen bonds), nucleotidyltransferases and phosphotransferases, while have underrepresented oxidoreductases. Furthermore, essential enzymes tend to associate with more gene ontology domains. These results, from the aspect of chemical reactions, provide further insights into the understanding of functions needed to support natural cellular life, as well as synthetic cells, and provide additional parameters that can be integrated into gene essentiality prediction algorithms.
MECHANISM OF DECOMPOSITION OF BARITE IN PROCESS OF SINTERING JIUQUAN BARITECONTAINING IRON ORE CONCENTRATE

by REN Yunfu,FENG Lin,

金属学报 , 1986,
Abstract:
Computer Implementation of a Coupled Boundary and Finite Element Methods for the Steady Exterior Oseen Problem
Minfu Feng,Yinnian He,Ruiting Ren
Mathematical Problems in Engineering , 2010, DOI: 10.1155/2010/845984
Abstract: We present a numerical technique based on the coupling of boundary and finite element methods for the steady Oseen equations in an unbounded plane domain. The present paper deals with the implementation of the coupled program in the two-dimensional case. Computational results are given for a particular problem which can be seen as a good test case for the accuracy of the method.
Prediction on the binding domain between human interleukin-6 and its receptor
Jiannan Feng,Yunfang Ren,Beifen Shen
Science China Life Sciences , 2000, DOI: 10.1007/BF02879306
Abstract: Based on the spatial conformations of human interleukin-6 (hIL-6) derived from nuclear magnetic resonance analysis and human interleukin-6 receptor (hIL-6R) modeled with homology modeling method using human growth hormone receptor as template, the interaction between hIL-6 and its receptor (hIL-6R) is studied with docking program according to the surface electrostatic potential analysis and spatial conformation complement. The stable region structure composed of hIL-6 and hIL-6R is obtained on the basis of molecular mechanism optimization and molecular dynamics simulation. The binding domain between hIL-6 and hIL-6R is predicted theoretically. Furthermore, the especial binding sites that influence the interaction between hIL-6 and hIL-6R are confirmed. The results lay a theoretical foundation for confirming the active regions of hIL-6 and designing novel antagonist with computer-guided techniques.
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