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| 1 | Drilling Force and Temperature of Bone under Dry and Physiological Drilling Conditions显示文摘Many researches on drilling force and temperature have been done with the aim to reduce the labour intensiveness of surgery, avoid unnecessary damage and improve drilling quality. However, there has not been a systematic study of mid- and high-speed drilling under dry and physiological conditions(injection of saline). Furthermore, there is no consensus on optimal drilling parameters. To study these parameters under dry and physiological drilling conditions, pig humerus bones are drilled with medical twist drills operated using a wide range of drilling speeds and feed rates. Drilling force and temperature are measured using a YDZ-II01 W dynamometer and a NEC TVS-500 EX thermal infrared imager, respectively, to evaluate internal bone damage. To evaluate drilling quality, bone debris and hole morphology are observed by SEM(scanning electron microscopy). Changes in drilling force and temperature give similar results during drilling such that the value of each parameter peaks just before the drill penetrates through the osteon of the compact bone into the trabeculae of the spongy bone. Drilling temperatures under physiological conditions are much lower than those observed under dry conditions, while a larger drilling force occurs under physiological conditions than dry conditions. Drilling speed and feed rate have a significant influence on drilling force, temperature, bone debris and hole morphology. The investigation of the effect of drilling force and temperature on internal bone damage reveals that a drilling speed of 4500 r/min and a feed rate of 50 mm/min are recommended for bone drilling under physiological conditions. Drilling quality peaks under these optimal parameter conditions. This paper proposes the optimal drilling parameters under mid- and high-speed surgical drilling, considering internal bone damage and drilling quality, which can be looked as a reference for surgeons performing orthopedic operations. | XU Linlin WANG Chengyong JIANG Min HE Huiyu SONG Yuexian CHEN Hanyuan SHEN Jingnan ZHANG Jiayong | 2014 | Chinese Journal of Mechanical Engineering2014，27，6： | 3 |
| 2 | Mechanism,properities and microstructure of titanium carbide-iron metal-ceramic from ilmenite by in-situ carbothermic reduction显示文摘 | Zou Zhengguang Chen Hanyuan | 2003 | Materials Science Forum2003，，423425： | 1 |
| 3 | The extremal unicyclic graphs with respect to Hosoya index and Merrifield-Simmons index显示文摘 | DENG Hanyuan CHEN Shubo | 2008 | MATCH Commun Math Comput Chem2008，59，： | 1 |
| 4 | The Merrifield-Simmons index in (n,n + 1)-graphs显示文摘 | Deng Hanyuan Chen Shuobo Zhang Jie | | 0，，01： | 1 |
| 5 | Structures and defects of WO 3? x nanorods grown by in-situ heating tungsten filament显示文摘 | Huairuo Zhang Min Feng Fei Liu Libao Liu Hanyuan Chen Hongjun Gao Jianqi Li | 2004 | Chemical Physics Letters2004，，4： | 1 |
| 6 | Extremal (n,n?+?1)-graphs with respected to zeroth- order general Randi? index显示文摘 | Shubo Chen Hanyuan Deng | 2007 | Journal of Mathematical Chemistry2007，，3： | 1 |
| 7 | The Merrifield-Simmons index in (n,n + 1)-graphs显示文摘 | Deng Hanyuan Chen Shubo Zhang Jie | | 0，，01： | 1 |
| 8 | Transmission electron microscopy study of pseudoperiodically twinned Zn2SnO4 nanowires显示文摘 | Chen Hanyuan Wang Jianxiong Yu Hongchun | 2005 | J Phys Chem B2005，109，： | 1 |
| 9 | Mechanism,properities and microstructure of titanium carbide-iron metal-ceramic from ilmenite by in-situ carbothermic reduction显示文摘 | Zou Zhengguang Chen Hanyuan | 2003 | Mater Sci Forum2003，，： | 1 |
| 10 | The extremal uncyclic graphs with respect to Hosoya index and Merrifield-Simmons index 显示文摘 | DENG Hanyuan CHEN Shubo | 2008 | MATCH Commun Math Comput Chem2008，59，： | 1 |
| 11 | The Merrifield-Simmons index in (n,n q- 1)- graphs显示文摘 | DENG Hanyuan CHEN Shubo ZHANG Jie | 2008 | Journal of Mathematical Chemistry2008，43，1： | 1 |
| 12 | The Merrifield--Simmons index in ( n, n + 1 ) -graphs 显示文摘 | DENG Hanyuan CHEN Shubo ZHANG Jie | 2008 | J Math Chem2008，43，1： | 1 |
| 13 | Mechanism, properties and microstructure of titanium carbide - iron metal - ceramic from ilmenite by in-situ carbothermic reduction显示文摘 | ZOU Zhengguang CHEN Hanyuan | 2003 | Mater Sci Forum2003，，： | 1 |
| 14 | Understanding the commonalities and differences in genomic organizations across closely related bacteria from an energy perspective显示文摘The availability of a large number of sequenced bacterial genomes facilitates in-depth studies about why genes(operons)in a bacterial genome are globally organized the way they are.We have previously discovered that(the relative)transcription-activation frequencies among different biological pathways encoded in a genome have a dominating role in the global arrangement of operons.One complicating factor in such a study is that some operons may be involved in multiple pathways with different activation frequencies.A quantitative model has been developed that captures this information,which tends to be minimized by the current global arrangement of operons in a bacterial(and archaeal)genome compared to possible alternative arrangements.A study is carried out here using this model on a collection of 52 closely related Escherichia coli genomes,which revealed interesting new insights about how bacterial genomes evolve to optimally adapt to their environments through adjusting the(relative)genomic locations of the encoding operons of biological pathways once their utilization and hence transcription activation frequencies change,to maintain the above energy-efficiency property.More specifically we observed that it is the frequencies of the transcription activation of pathways relative to those of the other encoded pathways in an organism as well as the variation in the activation frequencies of a specific pathway across the related genomes that play a key role in the observed commonalities and differences in the genomic organizations of genes(and operons)encoding specific pathways across different genomes. | MA Qin CHEN Xin LIU Chao MAO XiZeng ZHANG HanYuan JI Fei WU ChunGuo XU Ying | 2014 | Science China(Life Sciences)2014，57，11： | 1 |
| 15 | The Merrifield-Simmons index in ( n, n+ 1 ) -graphs 显示文摘 | Deng Hanyuan Chen Shubo Zhang Jie | 2008 | Journal of Mathematical Chemistry2008，43，1： | 1 |
| 16 | Design and Evaluation of an Exergame System of Knee with the Azure Kinect显示文摘Timely and effective knee function evaluation and knee exercises promote the prevention and self-management of knee diseases.In this paper,aKinectbased exergame system is proposed to assess and train the knee function.Azure Kinect was used to capture and generate 3D models of the user and immerse them in an interactive virtual environment.The software included three functional modules:knee function evaluation,Knee exercises game,and Comprehensive evaluation.The stand,step,leg lift,and squat were selected for knee function evaluation and exercises.Twenty volunteers participated in the experiment.Intraclass correlation coefficients(ICCs)were calculated to assess the reliability of kinematic measurements of knee angles during the movements.The ICC of these movements were stand(ICC=0.987),step(ICC=0.997),left leg lift(ICC=0.981),right leg lift(ICC=0.990),stand(ICC=0.998).The results show that the test-retest reliability is high.It means that the motion capture data is effective and the data obtained by Kinect is stable. | Guangjun Wang Ming Cheng Xueshu Wang Yi Fan Xin Chen Liangliang Yao Hanyuan Zhang Zuchang Ma | 2021 | 国际计算机前沿大会会议论文集2021，，2： | 0 |
| 17 | Implementing hardware primitives based on memristive spatiotemporal variability into cryptography applications显示文摘Implementing hardware primitives into cryptosystem has become a new trend in electronic community.Memristor,with intrinsic stochastic characteristics including the switching voltages,times and energies,as well as the fluctuations of the resistance state over time,could be a naturally good entropy source for cryptographic key generation.In this study,based on kinetic Monte Carlo Simula-tion,multiple Artificial Intelligence techniques,as well as kernel density map and time constant analysis,memristive spatiotemporal variability within graphene based conductive bridging RAM(CBRAM)have been synergistically analyzed to verify the inher-ent randomness of the memristive stochasticity.Moreover,the ran-dom number based on hardware primitives passed the Hamming Distance calculation with high randomness and uniqueness,and has been integrated into a Rivest-Shamir-Adleman(RSA)cryptosystem.The security of the holistic cryptosystem relies both the modular arithmetic algorithm and the intrinsic randomness of the hardware primitive(to be more reliable,the random num-ber could be as large as possible,better larger than 2048 bits as NIST suggested).The spatiotemporal-variability-based random number is highly random,physically unpredictable and machinelearningattack resilient,improving the robustness of the entire cryptosystem. | Bo Liu Yudi Zhao YinFeng Chang Han Hsiang Tai Hanyuan Liang Tsung-Cheng Chen Shiwei Feng Tuo-Hung Hou Chao-Sung Lai | 2023 | Chip2023，2，1： | 0 |
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