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| 1 | Channel morphologic processes of a highly sinuous bend approaching neck cutoff by bank erosion in the middle Yangtze River显示文摘The distal reach of the Lower Jingjiang River(LJR)in the middle of the Yangtze River consists of five adjacent bends,among which the Qigongling Bend is a U-shaped meander with a mean sinuosity of 2.2 and the narrowest neck 525 m in width.This bend is slowly approaching neck cutoff owing to progressive bank erosion.An abnormal phenomenon has occurred in this bend since the Three Gorges Reservoir(TGR)began to operate in 2003 which is erosion in the inner bank zone and deposition in the outer bank zone.This problem has not been fully understood because of the interplay of changes in water-sediment,bank erosion,and artificial bank revetment.In this study,aerial and remote sensing images,hydrological data,channel topography,and an existing bank erosion model are used to reveal channel morphodynamics of this bend and the trend of the potential neck cutoff induced by bank erosion.The study results show that the clear water released from the TGR has provided by forcefully eroded the point bar of inner bank but failed to scour the outer bank due to the protection of bank revetment since the 1990 s.Thus far,the outer bank zone near the bend apex has increasingly widened in conjunction with the formation of 2 emerging sand bars.Consequently,the thalweg of the main channel has laterally shifted toward the inner bank by roughly 800 m.More severely,the rate of bank retreat on the upstream side of the bend neck was about 4.5 m/yr in 2010-2019,but the downstream side of this neck was experienced slight deposition.Bank erosion could be accelerated by progressively increasing erosion and eventually trigger the occurrence of neck cutoff in the next few decades,thereby significantly altering the quasi-equilibrium regime of channel morphodynamics in the LJR. | Zhiwei Li Hanyuan Yang Junqiang Xia Meirong Zhou Shanshan Deng Yingzhen Wang | 2021 | International Journal of Sediment Research2021，36，4： | 5 |
| 2 | 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 |
| 3 | Unicycle Graphs with Maximum Generalized Topological Indices显示文摘 | Hongzhuan Wang Hanyuan Deng | 2007 | Journal of Mathematical Chemistry2007，，2： | 1 |
| 4 | 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 |
| 5 | Synthesis, structure, and reactions of NH-bridged calixarenepyridines显示文摘 | Yao Bo Wang Dexian Gong Hanyuan | 2009 | J Org Chem2009，74，15： | 1 |
| 6 | 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 |
| 7 | Contamination and human health risk assessment of heavy metal(loid)s in topsoil and groundwater around mining and dressing factories in Chifeng,North China显示文摘Chifeng is a concentrated mining area for non-ferrous metal minerals,as well as a key prevention and control area for heavyduty enterprises.This situation necessitates an efective ecological and human health risk assessment of heavy metal(loid)s driven by the wide distribution of metal ore processing,mining,and smelting factories in Hexigten Banner and Bairin Left Banner.We conducted surveys to assess the levels of heavy metal(loid)s(Cr,As,Pb,Cd,and Hg)in the topsoil and groundwater of the areas.The results indicated that the concentrations of As,Cd,and Pb in partial soil samples exceeded the environmental quality standards of Grade II.Based on contamination assessments,such as geoaccumulation indices and pollution indices,we inferred that Cd,Pb,and As were primary pollutants in topsoil.Potential ecological risks when considered as part of the average risk indices(RI)are up to 1626.40 and 2818.76,respectively,in the two areas.Comparative analysis revealed that Cd posed a very high potential ecological risk,followed by As.Moreover,the evaluation showed that the three exposure pathways of carcinogenic and non-carcinogenic risk followed a descending order:inhalation>ingestion>dermal contact,except for Pb.Arsenic in topsoil posed a potential non-carcinogenic risk to human health,while there were no adverse efects of As in groundwater.In addition,the average total carcinogenic risk for As in the two areas,as well as the risk of Pb in the topsoil of Bairin Left Banner and all the fve heavy metal(loid)s in groundwater,exceeded human tolerance.Pb–Zn mines caused higher human health risks.In addition,the tandem contamination of heavy metal(loid)s in soil and groundwater was not obvious.This research study provides a basis for pollution remediation to control heavy industry-induced ecological and health risks of heavy metal(loid)s. | Di Zhao Qiang Wu Yifan Zeng Juan Zhang Aoshuang Mei Xiaohui Zhang Shuai Gao Hanyuan Wang Honglei Liu Yong Zhang Shuai Qi Xu Jia | 2023 | International Journal of Coal Science & Technology2023，10，1： | 0 |
| 8 | Low limit of detection of the AlGaN/GaN-based sensor by the Kelvin connection detection technique显示文摘The AlGaN/GaN-based sensor is a promising POCT(point-of-care-testing)device featuring miniaturization,low cost,and high sensitivity.BNP is an effective protein biomarker for the early diagnosis of HF(heart failure).In this work,a novel AlGaN/GaN device with the Kelvin connection structure and the corresponding detection technique was proposed.This technique can effectively suppress the background noise and improve the SNR(signal-to-noise ratio).A BNP detection experiment was carried out to verify the effectiveness of this technique.It is shown that compared with that of the traditional detection method,the LOD(limit of detection)was improved from 0.47 ng/mL to 1.29 pg/mL.The BNP detection experiment was also carried out with a traditional electrochemical Au-electrode sensor with the same surface functionalization steps.The AlGaN/GaN sensor showed a better LOD than the Au-electrode sensor.Moreover,the influence of AlGaN/GaN sensor package on background noise was investigated with the mechanism of the noise source revealed.Finally,based on the optimized package,the optimal SNR quiescent operating point of the AlGaN/GaN sensor was determined.By biasing the sensor at the optimal quiescent operating point and immobilizing the magnetic beads with anti-BNP on the gate of the AlGaN/GaN sensor,the LOD for BNP detection was further improved to 0.097 pg/mL. | Hanyuan Zhang Ying Gan Shu Yang Kuang Sheng Ping Wang | 2021 | Microsystems & Nanoengineering2021，7，4： | 0 |
| 9 | Recognition of amino acids and anions by a Zn(Ⅱ)-methylazacalix[4]pyridine complex显示文摘As a powerful macrocyclic host molecule with unique conformation and cavity structure that are fine-tuned by the bridging nitrogen atoms, methylazacalix[4]pyridine (MACP-4) has been shown to selectively recognize Zn2+ and form stable Zn(Ⅱ)-MACP-4 complexes both in solid state and solution with an association constant up to 5.97 (logKs). The molecular recognition of Zn(Ⅱ)-MACP-4 complexes towards various amino acids and anions with different geometry was investigated by using the spectral titration methods and X-ray analysis. The Zn(Ⅱ)-MACP-4 complex was found to recognize the 17 amino acids tested with the association constant up to 3.97 (logKs). On the other hand, the Zn(Ⅱ)-MACP-4 complex selectively interacted with anions and the maximum association constant of 3.9 (logKs) was obtained. | GONG HanYuan, WANG DeXian, HUANG ZhiTang & WANG MeiXiang Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China | 2009 | Science China Chemistry2009，52，10： | 0 |
| 10 | The Research Progress of Biodegradable Zn-Based Alloys Used for Medical Application显示文摘Biodegradable medical device which can be completely degraded and disappear after the healing of human body tissues would avoid a second surgical procedure to remove the temporary parts for fixation.Zn ion is a vital nutrient and anti-inflammatory factor for life.Zn ion can be absorbed and have no poisonous side effects during degradation of the Zn-based alloys.And zinc is widely | Chang Wang Hanyuan Liu Zhentao Yu | 2016 | 功能材料信息2016，13，4： | 0 |
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