http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : ShengMin Zhang (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
-
Traceable Dynamic Public Auditing with Identity Privacy Preserving for Cloud Storage
( Yinghui Zhang ),( Tiantian Zhang ),( Rui Guo ),( Shengmin Xu ),( Dong Zheng ) 한국인터넷정보학회 2019 KSII Transactions on Internet and Information Syst Vol.13 No.11
In cloud computing era, an increasing number of resource-constrained users outsource their data to cloud servers. Due to the untrustworthiness of cloud servers, it is important to ensure the integrity of outsourced data. However, most of existing solutions still have challenging issues needing to be addressed, such as the identity privacy protection of users, the traceability of users, the supporting of dynamic user operations, and the publicity of auditing. In order to tackle these issues simultaneously, in this paper, we propose a traceable dynamic public auditing scheme with identity privacy preserving for cloud storage. In the proposed scheme, a single user, including a group manager, is unable to know the signer's identity. Furthermore, our scheme realizes traceability based on a secret sharing mechanism and supports dynamic user operations. Based on the security and efficiency analysis, it is shown that our scheme is secure and efficient.
-
Das, Dipankar,Zhang, Shengmin,Noh, Insup Institute of Physics Publishing Ltd 2018 Biomedical Materials Vol.13 No.2
<P>A biocompatible hybrid film has been fabricated using alginate (Alg), alpha-tricalcium phosphate (alpha-TCP) microparticle and calcium chloride through ionic crosslinking as a biomaterial. The 'screeding method' (like a concrete finishing process) has been employed to develop the Alg-alpha-TCP film. For this method, the Alg/alpha-TCP blend has been prepared using an ultra-sonicator and then put on a glass slide. After that, the excess volume of blend has been cut off by skidding another slide along with the surface of the blend to achieve proper grade and flatness. The mechanical strength and flexibility of the film (Alg-alpha-TCP) has been controlled by changing its compositions. The crosslinking phenomenon has been confirmed by attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), C-13 nuclear magnetic resonance (NMR), x-ray diffraction and thermogravimetric analyses. The ATR-FTIR and C-13 NMR analysis results suggest that carboxylate groups of the alginate are ionically cross-linked with Ca2+ ions, while the alpha-TCP particles reside in the network by physical interaction. The micro-fatigue test results imply high tensile strength (up to 257 MPa) and flexibility (up to 13% elongation) of the Alg-alpha-TCP hybrid films. The SEM analysis suggests the alpha-TCP particles are homogeneously distributed on the surface of Alg-alpha-TCP films, whereas cross-sectional images confirmed the presence of alpha-TCP in the cross-linked network. TGA results demonstrated that thermal stability of the hybrid film was enhanced due to ionic crosslinking and interfacial interaction between alginate and alpha-TCP. The incorporation of alpha-TCP particles diminished the swelling ratio of the hybrid film. The in vitro bone cell (MC3T3) culture and cytotoxicity tests showed that the hybrid film is biocompatible. The hybrid film releases bovine serum albumin and dimethyloxaloylglycine in a controlled way at pH7 and 7.4, and 37 degrees C. Overall, the biocompatible Alg-alpha-TCP hybrid film with excellent mechanical strength and flexibility could be applied as an interfacial film in tissue engineering.</P>
-
Research trends in biomimetic medical materials for tissue engineering:commentary
박기동,Xiumei Wang,이재영,박경민,ShengMin Zhang,노인섭 한국생체재료학회 2016 생체재료학회지 Vol.20 No.1
We introduce our active experts’ communications and reviews (Part II) of 2015 Korea-China Joint Symposium on Biomimetic Medical Materials in Republic of Korea, which reflect their perspectives on current research trends of biomimetic medical materials for tissue regeneration in both Korea and China. The communications covered three topics of biomimetics, i.e., 1) hydrogel for therapeutics and extracellular matrix environments, 2) design of electrical polymers for communications between electrical sources and biological systems and 3) design of biomaterials for nerve tissue engineering. The reviews in the Part II will cover biomimetics of 3D bioprinting materials, surface modifications, nano/micro-technology as well as clinical aspects of biomaterials for cartilage.
-
Cen Chen,Sumi Bang,Younghak Cho,Sahnghoon Lee,이인섭,ShengMin Zhang,노인섭 한국생체재료학회 2016 생체재료학회지 Vol.20 No.2
This review discusses about biomimetic medical materials for tissue engineering of bone and cartilage, after previous scientific commentary of the invitation-based, Korea-China joint symposium on biomimetic medical materials, which was held in Seoul, Korea, from October 22 to 26, 2015. The contents of this review were evolved from the presentations of that symposium. Four topics of biomimetic medical materials were discussed from different research groups here: 1) 3D bioprinting medical materials, 2) nano/micro-technology, 3) surface modification of biomaterials for their interactions with cells and 4) clinical aspects of biomaterials for cartilage focusing on cells, scaffolds and cytokines.
ScienceON
KISS연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
