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| 1 | Error estimate for Doo-Sabin surfaces显示文摘Based on a general bound on the distance error between a uniform Doo-Sabin surface and its control polyhedron, an exponential error bound independent of the subdivision process is presented in this paper. Using the exponential bound, one can predict the depth of recursive subdivision of the Doo-Sabin surface within any user-specified error tolerance. | WANG Huawei , GUAN Youjiang and QIN Kaihuai(1. Department of Computer Science and Technology 2. Department of Precision Instrument and Mechanics, Tsinghua University, Beijing 100084, China) | 2002 | Progress in Natural Science:Materials International2002，12，9： | 4 |
| 2 | Precise evaluation of uniform Doo-Sabin surfaces显示文摘Using eigenanalysis of uniform Doo-Sabin subdivision surfaces, parameterization approaches for two types of Doo-Sabin subdivision surfaces are developed, and evaluation methods for values and derivatives of Doo-Sabin surfaces at arbitrary parameters are presented by means of non-iterative approaches. Generalized basis functions for Doo-Sabin surfaces are also derived. Thus, the prejudice is disproved further that subdivision surfaces cannot be evaluated precisely. | WANG Huawei and QIN Kaihuai(Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China) | 2003 | Progress in Natural Science:Materials International2003，13，5： | 3 |
| 3 | A new electroplated Ir/Ir(OH)_x pH electrode and its application in the coastal areas of Newport Harbor, California显示文摘Resulting from the rising levels of atmospheric carbon, ocean acidification has become a global problem. It has significant impacts on the development, survival, growth and physiology of marine organisms. Therefore, a highprecision sensor is urgently needed to measure the pH of sea-water. Iridium wire with a diameter of 0.25 mm is used as the substrate, and an Ir/Ir(OH)_x pH electrode is prepared by a one-step electrochemical method in a Li OH solution at the room temperature. A scanning electron microscope(SEM) observation reveals that it is coated with nanoscale particles. In laboratory tests, the electrode exhibits a very promising pH response, with an ideal Nernst slope(56.14–59.52), fast response, good stability and long life-span in tested pH buffer solutions. For a sea trial,four pH electrodes and one Ag/Ag Cl reference electrode are integrated with a self-made chemical sensor, and a profile detection of nearly 70 m is implemented near Newport Harbor, California on August 3, 2015. The results reflect that the pH value measured by the sensor is very close to the data given by Sea-Bird 911 plus CTD, with a difference value ranging from 0.000 075 to 0.064 719. And the sensor shows a better data matching degree in 0–40m water depth. In addition, the high precision and accuracy of the sensor make it possible to use in the ocean observation field. | ZHANG Xiao YE Ying KAN Yating HUANG Yuanfeng JIA Jianjun ZHAO Yue CHEN Chen-Tung Arthur QIN Huawei | 2017 | Acta Oceanologica Sinica2017，36，5： | 2 |
| 4 | Spatial distribution pattern of seafloor hydrothermal vents to the southeastern Kueishan Tao offshore Taiwan Island显示文摘Investigations of the diffusion activities both within and outside the seafloor hydrothermal vents, as well as related mineral genesis, have been one of the key focuses of ocean biogeochemistry studies. Many hydrothermal vents are distributed close to the southern Okinawa Trough on the less-than-30-m deep shallow seafloor off Kueishan Tao, northeast of Taiwan Island. Investigations of temperature, pH and Eh at four depths of hydrothermal plume were carried out near Kueishan Tao at the white(24.83°N, 121.96°E) and yellow(24.83°N, 121.96°E) vents. An 87 h of temperature time series observation-undertaken near the white vent showed that tide is the main factor affecting the background environment. Based on the observed data, 3-dimensional sliced diffusion fields were obtained and analyzed. It was concluded that the plume diffused mainly from north to south due to ebb tide. The yellow vent's plume could effect as far as the white vent surface. From the temperature diffusion field, the vortices of the plume were observed. The Eh negative abnormality was a better indicator to search for hydrothermal plumes and locate hydrothermal vents than high temperature and low pH abnormalities. | HAN Chenhua YE Ying PAN Yiwen QIN Huawei WU Guanghai CHEN Chen-Tung Arthur | 2014 | Acta Oceanologica Sinica2014，33，4： | 2 |
| 5 | k out of n Oblivious Transfer Proto- cols from Bilinear Pairings显示文摘 | Qin Jing Zhao Huawei | 2010 | Journal of Software2010，5，1： | 1 |
| 6 | Surface modeling with ternary interpolating subdivision显示文摘 | Wang Huawei Qin Kaihuai | 2005 | The Visual Computer2005，21，12： | 1 |
| 7 | A general transformation from KP-ABE to searchable encryption显示文摘 | Fei Han Jing Qin Huawei Zhao Jiankun Hu | 2014 | Future Generation Computer Systems2014，，： | 1 |
| 8 | A new Lagrange solution to the privacy-preserving general geometric intersection problem显示文摘 | Jing Qin Hongwei Duan Huawei Zhao Jiankun Hu | 2014 | Journal of Network and Computer Applications2014，，： | 1 |
| 9 | Continuity of non-uniform recursive subdivision surfaces显示文摘 | Qin Kaihuai Wang Huawei | 2000 | Science in China (Series E)2000，43，5： | 1 |
| 10 | A multi-channel chemical sensor and its application in detecting hydrothermal vents显示文摘There are well-established chemical and turbidity anomalies in the plumes occurring vicinity of hydrothermal vents, which are used to indicate their existence and locations. We here develop a small, accurate multi-channel chemical sensor to detect such anomalies which can be used in deep-sea at depths of more than 4 000 m. The design allowed five all-solid-state electrodes to be mounted on it and each (apart from one reference electrode) could be changed according to chemicals to be measured. Two experiments were conducted using the chemical sensors. The first was a shallow-sea trial which included sample measurements and in situ monitoring. pH, Eh, CO3^2- and SO4^2- electrodes were utilized to demonstrate that the chemical sensor was accurate and stable outside the laboratory. In the second experiment, the chemical sensor was integrated with pH, Eh, CO3^2- and H2S electrodes, and was used in 29 scans of the seabed along the Southwest Indian Ridge (SWIR) to detect hydrothermal vents, from which 27 sets of valid data were obtained. Hydrothermal vents were identified by analyzing the chemical anomalies, the primary judging criteria were decreasing voltages of Eh and H2S, matched by increasing voltages of pH and CO3^2- . We proposed that simultaneous detection of changes in these parameters will indicate a hydrothermal vent. Amongst the 27 valid sets of data, five potential hydrothermal vents were targeted using the proposed method. We suggest that our sensors could be widely employed by marine scientists. | Zhen Cai A J Mur Luis Jiwan Han Kui Wang Huawei Qin Ying Ye | 2019 | Acta Oceanologica Sinica2019，38，9： | 1 |
| 11 | Estimating recursion depth for Loop subdivision 显示文摘 | Wang Huawei Sun Hanqiu Qin Kaihuai | 2004 | International Journal of CAD/CAM2004，4，1： | 1 |
| 12 | Energy performance evaluation of an innovative hydrostatic motor显示文摘 | WANG Jianjun QIN Huawei CHEN Ying | | 0，，57： | 1 |
| 13 | Optical synaptic devices with ultra-low power consumption for neuromorphic computing显示文摘Brain-inspired neuromorphic computing,featured by parallel computing,is considered as one of the most energyefficient and time-saving architectures for massive data computing.However,photonic synapse,one of the key components,is still suffering high power consumption,potentially limiting its applications in artificial neural system.In this study,we present a BP/CdS heterostructure-based artificial photonic synapse with ultra-low power consumption.The device shows remarkable negative light response with maximum responsivity up to 4.1×10^(8)AW^(−1) at VD=0.5 V and light power intensity of 0.16μW cm^(−2)(1.78×10^(8)AW^(−1) on average),which further enables artificial synaptic applications with average power consumption as low as 4.78 fJ for each training process,representing the lowest among the reported results.Finally,a fully-connected optoelectronic neural network(FONN)is simulated with maximum image recognition accuracy up to 94.1%.This study provides new concept towards the designing of energy-efficient artificial photonic synapse and shows great potential in high-performance neuromorphic vision systems. | Chenguang Zhu Huawei Liu Wenqiang Wang Li Xiang Jie Jiang Qin Shuai Xin Yang Tian Zhang Biyuan Zheng Hui Wang Dong Li Anlian Pan | 2022 | Light(Science & Applications)2022，11，12： | 1 |
| 14 | Reconfigurable,graphene-coated,chalcogenide nanowires with a sub-10-nm enantioselective sorting capability显示文摘Chiral surface plasmon polaritons(SPPs)produced by plasmonic nanowires can be used to enhance molecular spectroscopy for biosensing applications.Nevertheless,the switchable stereoselectivity and detection of various analytes are limited by a lack of switchable,chiral SPPs.Using both finite-element method simulations and analytic calculations,we present a graphene-coated chalcogenide(GCC)nanowire that produces mid-infrared,chiral SPPs.The chiral SPPs can be reversibly switched between“on”(transparent)and“off”(opaque)by non-volatile structural state transitions in the dielectric constants of the chalcogenide glass Ge2Sb2Te5.Furthermore,by controlling the Fermi energy of the graphene-coating layer,the nanowire can output either non-chiral or chiral SPPs.A thermal-electric model was built to illustrate the possibility of ultrafast on/off switching of the SPPs at the terminus of the nanowire.Finally,we show that a selective,lateral sorting of sub-10-nm enantiomers can be achieved via the GCC nanowire.Chiral nanoparticles with opposite handedness experience transverse forces that differ in both their sign and magnitude.Our design may pave the way for plasmonic nanowire networks and tunable nanophotonic devices,which require the ultrafast switching of SPPs,and provide a possible approach for a compact,enantiopure synthesis. | Tun Cao Long Tian Huawei Liang Kai-Rong Qin | 2018 | Microsystems & Nanoengineering2018，4，1： | 1 |
| 15 | Wüstite-type Fe0.78Mn0.22O nanocubes:A new class for high-sensitive T2-weighted magnetic resonance imaging agent显示文摘Wüstite-type Fe(0.78)Mn(0.22)O nanocubes,with a uniform size of^10 nm in edge length,have been synthesized by thermal-decomposition approach.The nanocubes exhibited superparamagnetic properties at room temperature,associated with a magnetization of 12.6 emu/g.These Fe(0.78)Mn(0.22)O nanocubes present transversal(r2)and longitudinal(r1)relaxivities of 325.9 and 0.518 mM^-1 s^-1 at 7 T for water protons.The ratio of the r2/r1(629.2)ranks them being the highest sensitivity(r2/r1)comparable to currently reported T2-weighted magnetic resonance imaging(MRI)agents.Meanwhile,the Fe(0.78)Mn(0.22)O nanocubes were functionalized and demonstrated to be biocompatible when attached to the surface of mesenchymal stem cells,therefore showing the promise as a new class of MRI agents in clinic applications. | Huawei Rong Haihua Hu Jian Zhang Jianjun Wang Mu Zhang Gaowu Qin Yanhui Zhang Xuefeng Zhang | 2019 | Journal of Materials Science & Technology2019，35，11： | 0 |
| 16 | Experimental and theoretical analysis of a hybrid vibration energy harvester with integrated piezoelectric and electromagnetic interaction显示文摘Harvesting vibration energy has attracted the attention of researchers in recent decades as a promising approach for powering wireless sensor networks.The hybridization of piezoelectricity and electromagnetism has proven helpful in the improvement of vibration energy harvesting.In this study,we explore the integration of piezoelectric and electromagnetic parts in one vibration energy harvesting device.Lumped-parameter models of the system are derived considering the different connection topologies of the piezoelectric and electromagnetic parts.Numerical predictions from these models are compared with experimental results to throw light on the nonlinearities in the system.Modifications of the system are also explored to provide insights into opportunities to improve its performance and that of future vibration energy harvesters. | Shifan HUANG Weihao LUO Zongming ZHU Zhenlong XU Ban WANG Maoying ZHOU Huawei QIN | 2023 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2023，24，11： | 0 |
| 17 | Red list assessments of Chinese higher plants显示文摘Based on the two most recent assessments of Chinese higher plants in 2013 and 2020,of 34,450 and 39,330 species,respectively,we analysed the threatened status of Chinese higher plants.In 2020,around 4,088(10.39%)of the assessed species in China are threatened,2,875(7.31%)Near Threatened,27,593(70.16%)not currently threatened and categorised as Least Concern and 4,752(12.08%)categorised as Data Deficient.While in 2013,3,767(10.93%)of the assessed higher plants in China are threatened,2,723(7.90%)Near Threatened,24,296(70.53%)Least Concern and 3,612(10.48%)Data Deficient.Estimates of the Red List Index in the two years show different patterns when using different weighting methods with the equal steps weighting method showing a slight decrease(0.91675-0.91495)and the extinction risk weighting method showing a slight increase(0.98792-0.98797).We inferred that China's threatened plant species were likely/relatively effectively protected.However,attention should also be given to the non-threatened species in the future as an additional strategy for their conservation,to maintain their non-threatened status. | Liping Li Haining Qin Eimear Nic Lughadha Yaomin Zheng Huawei Wan Jack Plummer Melanie-Jayne R.Howes Huiyuan Liu Yangming Jiang Tuo Wang Huihui Zhao Zhanfeng Shen Huiping Huang | 2023 | International Journal of Digital Earth2023，16，1： | 0 |
| 18 | Ex vivo cartilage explant model for the evaluation of chondrocyte-targeted exosomes显示文摘There is no efficient tracking system available for the therapeutic molecules delivered to cartilage.The dense matrix covering the cartilage surface is the main biological barrier that the therapeutic molecules must overcome.In this study,we aimed to establish a system that can dynamically and effectively track the therapeutic molecules delivered to cartilage.To this aim,we adopted bovine and human cartilage explants as ex vivo models for chondrocyte-targeted exosome dispersion.The efficiency of drug delivery was evaluated using frozen sections.The results of this study showed that the penetration and distribution of chondrocyte-targeted exosomes in cartilage explants can be tracked dynamically.Thus,ex vivo cartilage explants provide an effective and economic system to evaluate therapeutic drugs encapsulated in chondrocyte-targeted exosomes in preclinical studies. | KAN OUYANG MEIQUAN XU YUJIE LIANG XIAO XU LIMEI XU CAINING WEN ZHUAN QIN YIXIN XIE HUAWEI ZHANG LI DUAN DAPING WANG | 2022 | BIOCELL2022，46，6： | 0 |
| 19 | Integration of chemical and biological methods:A case study of polycyclic aromatic hydrocarbons pollution monitoring in Shandong Peninsula,China显示文摘Polycyclic aromatic hydrocarbons(PAHs),as persistent toxic substances(PTS),have been widely monitored in coastal environment,including seawater and sediment.However,scientific monitoring methods,like ecological risk assessment and integrated biomarker response,still need massive researches to verify their availabilities.This study was performed in March,May,August and October of 2018 at eight sites,Yellow River estuary(S1),Guangli Port(S2),Xiaying(S3),Laizhou(S4),Inner Bay(S5),Outer Bay(S6),Hongdao(S7)and Hongshiya(S8)of Shandong Peninsula,China.The contents of 16 priority PAHs in local seawater and sediment were determined,by which ecological risk assessment risk quotient(RQ)for seawater and sediment quality guidelines(SQGs)were calculated to characterize the PAHs pollution.Meanwhile,multiple biomarkers in the digestive gland of clam Ruditapes philippinarum were measured to represent different biological endpoints,including ethoxyresorufin-O-deethylase(EROD),glutathione S-transferase(GST),sulfotransferase(SULT),superoxide dismutase(SOD)and lipid peroxidation(LPO),by which integrated biomarker response(IBR)was calculated to provide a comprehensive assessment of environmental quality.Taken together,these results revealed the heaviest pollution at S2 as both PAHs concentrations and biomarkers responses reflected,and supported the integrated biomarker response as a useful tool for marine environmental monitoring,through its integration with SQGs. | Zeyuan Li Yunhao Cao Huawei Qin Yuanqing Ma Luqing Pan Jiawei Sun | 2022 | Journal of Environmental Sciences2022，34，1： | 0 |
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