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RISS 인기검색어
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- 저자 : Shao Wei Tan (검색결과 4 건)
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고정훈,Shao Wei Tan 한국정밀공학회 2013 International Journal of Precision Engineering and Vol. No.
Recently, vibration assistance has been mainly applied to feed and cross- feed directions for milling processes. This paper investigates the effect of ultrasonic vibration assistance in tooling’s axial direction for improvement of machined surface with reduction of chatter marks. With the designed ultrasonic vibration assisted milling process with 39.7 kHz and a few micro-meter amplitudes, workpiece vibrates along tooling’s axial direction while various cutting speeds and feed rates are applied. In addition to a cutter rotation motion,the axial directional vibration assistance acts as additional cutting motion which further reduces the leftover surface error. Experimental results validate that surface roughness can be improved with the reduced chatter marks through the axial directional vibration assistance for the tested conditions. Finally, process simulation demonstrates that milling stability can be enhanced with the tooling’s ultrasonic vibration assistance, which explains the experimental phenomenon of the chatter marks reduction of the mesoscale milling processes.
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Zero-Correlation Linear Cryptanalysis of Reduced Round ARIA with Partial-sum and FFT
( Wen-tan Yi ),( Shao-zhen Chen ),( Kuan-yang Wei ) 한국인터넷정보학회 2015 KSII Transactions on Internet and Information Syst Vol.9 No.1
Block cipher ARIA was first proposed by some South Korean experts in 2003, and later, it was established as a Korean Standard block cipher algorithm by Korean Agency for Technology and Standards. In this paper, we focus on the security evaluation of ARIA block cipher against the recent zero-correlation linear cryptanalysis. In addition, Partial-sum technique and FFT (Fast Fourier Transform) technique are used to speed up the cryptanalysis, respectively. We first introduce some 4-round linear approximations of ARIA with zero-correlation, and then present some key-recovery attacks on 6/7-round ARIA-128/256 with the Partial-sum technique and FFT technique. The key-recovery attack with Partial-sum technique on 6-round ARIA-128 needs 2<sup>123.6</sup> known plaintexts (KPs), 2<sup>121</sup>encryptions and 2<sup>90.3</sup> bytes memory, and the attack with FFT technique requires 2<sup>124.1</sup>KPs, 2<sup>121.5</sup> encryptions and 2<sup>90.3</sup> bytes memory. Moreover, applying Partial-sum technique, we can attack 7-round ARIA-256 with 2<sup>124.6</sup>KPs, 2<sup>203.5</sup> encryptions and 2<sup>152</sup> bytes memory and 7-round ARIA-256 employing FFT technique, requires 2<sup>124.7</sup>KPs, 2<sup>209.5</sup> encryptions and 2<sup>152</sup> bytes memory . Our results are the first zero-correlation linear cryptanalysis results on ARIA.
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Self-assembled micelles of the natural medicine ginsenosides for cancer metastasis therapy
Xia-Rong Tan,Chao-Li,Ke-Ke Feng,Jing-Qing Le,Jiang-Wen Shen,Jing-Wei Shao 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.116 No.-
The nanocarrier-based drug delivery systems have become an alternative strategy for cancer treatment. Whereas, increasing studies find that the utilization of drug carriers may result in poor biocompatibility,lower drug loading capacity and unpredictable side reactions. Therefore, we herein reported selfassembledmicelles based on herbal product ginsenosides, which are the main active ingredients ofPanax ginseng C.A. The ginsenosides-based micelle system exerts excellent biosafety, better stability, highdrug capacity, and lower cytotoxicity compared to free ginsenosides. Meanwhile, ginsenosides micellesexhibits superior inhibitory effects on cancer cell adhesion activity, especially the expression of intercellularadhesion molecule-1, which is the critical factor of cancer metastasis. Importantly, ginsenosidesmicelles results in remarkably therapeutic efficacy on lung metastasis of liver cancer. All these resultshighlight the potential utilization of ginsenosides micelles in the clinic. Meanwhile, the carrier-freenano-drugs self-delivery system of ginsenosides showed great promise to become an emerging approachfor cancer metastasis therapy.
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Lack of Influence of an XRCC3 Gene Polymorphism on Oral Cancer Susceptibility: Meta-analysis
Zhang, En-Jiao,Cui, Zhi-Gang,Xu, Zhong-Fei,Duan, Wei-Yi,Huang, Shao-Hui,Tan, Xue-Xin,Yin, Zhi-Hua,Sun, Chang-Fu,Lu, Li Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.23
Background: To systematically summarize the association between the X-ray repair cross complementing 3 (XRCC3) gene polymorphism and oral cancer susceptibility by meta-analysis. Materials and Methods: Databases including PubMed, EMbase, CNKI, VIP and WanFang Data were searched to identify case-control studies concerning the association between an XRCC3 gene polymorphism and the risk of oral cancer from the inception to June 2014. Two reviewers independently screened the literature according to the criteria, extracted the data and assessed the quality. Then meta-analysis was performed using Stata 11.0 software. Results: Seven published case-control studies including 775 patients with oral cancer and 1922 controls were selected. Associations between the rs861539 polymorphism and overall oral cancer risk were not statistically significant in all kinds of comparison models (CT vs CC: OR=0.94, 95%CI=0.74-1.18; TT vs CC: OR=0.94, 95%CI=0.64-1.38; dominant model: OR=0.95, 95%CI=0.76-1.18; recessive model: OR=0.94, 95%CI=0.69-1.29; allele T vs C: OR=0.97, 95%CI=0.84-1.11). In the stratified analysis by ethnicity, no significant associations were found among Asians and Caucasians. On stratification by tumor type, no significant associations were found for cancer and oral premalignant lesions. Conclusions: The XRCC3 gene polymorphism was not found to be associated with the risk of oral cancer. Considering the limited quality of the included case-control studies, more high quality studies with large sample size are needed to verify the above conclusion.
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