检索结果-南通市图书馆

Science China(Technological Sciences) 2019年第4期62卷 569-577页

作者： WANG HongBo LI HaoFei WU YuanHao YANG jianhai LIU WenGuang School of Materials Science and Engineering Tianjin Key Laboratory of Composite and Functional MaterialsTianjin University

The fibrotic response plays an important role in the performance and longevity of implantable devices. Thus, development of effective anti-inflammatory and anti-fibrosis biomaterial implants has become an urgent task. In this work, we developed a novel supramolecular polymer hydrogel through the copolymerization of N-acryloyl glycinamide(NAGA) and carboxybetaine acrylamide(CBAA) in the absence of any chemical crosslinker, which the mechanical properties being tunable through changing the monomer concentration and the monomer ratio over a broad scope. The hydrogel possessed the superior mechanical performances: high tensile strength(～1.13 MPa), large stretchability(～1200%), and excellent compressive strength(～9 MPa) at high monomer concentration and NAGA/CBAA ratio. Introduction of CBAA could promote the self-healability, thermoplasticity of suparmolecular polymer hydrogels at lower temperatures, meanwhile dramatically improving anti-fouling *** analysis and in vitro cytotoxicity assays testified the excellent biocompatibility of the hydrogel. This high strength supramolecular polymer hydrogel with integrated multiple functions holds promising potentials as a scaffold biomaterial for treating degenerated soft supporting tissues.

关键词： supramolecular polymer hydrogel self-healing anti-protein absorption fibrotic response

Erratum to： Patterns of coccolithophore pigment change under global acidification conditions based on in-situ observations at BATS site between July 1990-Dec 2008

在线全文

学校读者我要写书评

暂无评论

Frontiers of Earth Science 2017年第2期11卷 308-309页

作者： jianhai LV Yaoqiu KUANG Hui ZHAO Andreas ANDERSSON Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China Bermuda Institute of Ocean Sciences Ferry Reach St. Georges GE-01 Bermuda Guangdong Ocean University Zhanjiang 524088 China Marine and Fishery Environment Monitoring Center of Guangzhou Guangzhou 510235 China

Erratum to： Front. Earth Sci. DOI 10.1007/sl1707-015-0503-x The authors requested that an Erratum be published containing a correction to the authors lists, text, acknowledgements.1） Dr. Andreas Andersson was unknowingly and incorrectly included as a co-author on this paper. He did not see or contribute to this manuscript before submission and does not endorse the results and findings of this study. Dr. Andersson is not a co-author. The paper should be cited as：＂Lv J, Kuang Y, Zhao H （2017）. Patterns of coccolithophore pigment change under global acidification conditions based on in-situ observations at BATS site between July 1990-Dec 2008. Frontiers of Earth Science, 11 （2）： 297-307＂.

关键词： dissolved inorganic carbon BATS MLD coccolithophore pigments the Bermuda

Laboratory diagnosis for malaria in the elimination phase in China:efforts and challenges

维普期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Frontiers of Medicine 2022年第1期16卷 10-16页

作者： jianhai Yin Mei Li He Yan Shuisen Zhou Zhigui Xia National Institute of Parasitic Diseases Chinese Center for Disease Control and Prevention(Chinese Center for Tropical Diseases Research)NHC Key Laboratory of Parasite and Vector BiologyWHO Collaborating Center for Tropical DiseasesNational Center for International Research on Tropical DiseasesShanghai 200025China

Malaria remains a global health challenge,although an increasing number of countries will enter pre-elimination and elimination *** prompt and precise diagnosis of symptomatic and asymptomatic carriers of Plasmodium parasites is the key aspect of malaria *** the launch of the China Malaria Elimination Action Plan in 2010,China has formulated clear goals for malaria diagnosis and has established a network of malaria diagnostic laboratories within medical and health institutions at all *** external quality assessments were implemented,and a national malaria diagnosis reference laboratory network was established to strengthen the quality assurance in malaria ***,no indigenous malaria cases have been reported since 2017,but the risk of re-establishment of malaria transmission cannot be *** review summarizes the lessons about malaria diagnosis in the elimination phase,primarily including the establishments of laboratory networks and quality control in China,to better improve malaria diagnosis and maintain a malaria-free status.A reference is also provided for countries experiencing malaria elimination.

关键词： malaria laboratory diagnosis quality control malaria elimination China

A new strength criterion for structured soils

在线全文

学校读者我要写书评

暂无评论

Journal of Rock Mechanics and Geotechnical Engineering 2013年第2期5卷 156-161页

作者： Enlong Liu Qing Nie jianhai Zhang State Key Laboratory of Hydraulics and Mountain River Engineering College of Water Resource and Hydropower Sichuan University

Existing strength criteria are mostly formulated to describe the mechanical properties of reconstituted soils. However, the engineering characteristics of structured soils are different from those of reconstituted soils in many aspects, especially in their strength properties, Thus, the influence of soil structure （bonding and fabric） on the mechanical properties of structured soils cannot be correctly described, By analyzing the breakage mechanism of natural soils, the structured soils can be conceptualized as binary medium materials consisting of bonded blocks and weakened bands. On this basis, a new strength criterion is pro- posed for structured soils, The expressions of the strength criterion on both meridian and deviator planes are given to describe the strength properties of structured soils on these planes. The proposed strength criterion is compared with available test data under conventional and true triaxial stress conditions in the literature. It is observed that the proposed strength criterion agrees well with the test data.

关键词： Strength criterion Structured soils Binary medium model Breakage mechanism

Multidimensional clinical data denoising via Bayesian CP factorization

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2020年第2期63卷 249-254页

作者： CUI GaoChao ZHU Li GUI LiHua ZHAO QiBin ZHANG jianhai CAO JianTing Graduate School of Engineering Saitama Institute of TechnologySaitama 3690293Japan School of Computer Science and Technology Hangzhou Dianzi UniversityHangzhou 310018China Cognitive Science Department School of Information Science and EngineeringXiamen UniversityXiamen 361005China Tensor Learning Unit Center for Advanced Intelligence ProjectRIKENSaitama 1030027Japan School of Automation Guangdong University of TechnologyGuangzhou 510006China

CANDECOMP/PARAFAC(CP) tensor factorization is an efficient technique for incomplete tensor-data processing through capturing the multilinear latent factors. Based on the incorporate a sparsity-inducing prior over multiple latent factors and appropriate hyper-priors over all hyper-parameters, a Bayesian-based hierarchical probabilistic CP factorization model could be formed. By this way, the rank of the incomplete tensor can be determined automatically. In this paper, we explored the tensor completion method in processing incomplete multidimensional electroencephalogram(EEG) and magnetic resonance imaging(MRI) clinical data. The empirical results indicated that the Bayesian CP tensor factorization of incomplete data method can effectively recover EEG signal with missing data and denoised the noisy MRI data.

关键词： electroencephalogram(EEG) magnetic resonance imaging(MRI) Bayesian tensor factorization CANDECOMP/PARAFAC(CP)

Nanowire-based transparent conductors for flexible electronics and optoelectronics

在线全文

学校读者我要写书评

暂无评论

Science Bulletin 2017年第2期62卷 143-156页

作者： Jie Xue Jizhong Song Yuhui Dong Leimeng Xu jianhai Li Haibo Zeng Institute of Optoelectronics & Nanomaterials Herbert Cleiter Institute of Nanoscience School of Materials Science and Engineering Nanjing University of Science & Technology Nanjing 210094 China

As the necessary components for various modern electronic and optoelectronic devices, novel transparent electrodes(TEs) with the low cost, abundance features, and comparable performance of indium tin oxide(ITO) are inquired materials. Metal nanowires(NWs) with the excellent photoelectric properties as next-generation TE candidates have widely applications in smart optoelectronic devices such as electronic skins, wearable electronics, robotic skins, flexible and stretchable displays. This review describes the synthetic strategies for the preparation of metal NWs, the assemble process for metal NW films,and the practical aspects of metal NW films with the desired properties in various low-cost, flexible,and solution-based photoelectric devices.

关键词： Metal nanowires Transparent electrodes Solution-based process Light-emitting diodes Touch screens Solar cells

Effects of melatonin implantation on cashmere yield,fibre characteristics,duration of cashmere growth as well as growth and reproductive performance of Inner Mongolian cashmere goats

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2015年第4期6卷 463-468页

作者： Chunhui Duan jianhai Xu Changmian Sun Zhihai Jia Wei Zhang State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural University College of Veterinary Medicine China Agricultural University

Background： Exogenous melatonin could induce cashmere growth. However, induced growth of cashmere fleece by melatonin implants cannot be combined with the typical growth, resulting in earlier shedding followed by another cycle of cashmere growth. To address this issue, we examine the effects on the cashmere yield, fibre characteristics, and the growth and reproductive performance of cashmere goats of planned administration of melatonin. Methods： Eighteen half-sib, female goats were assigned to two treatments （n = 9） including a control and a treatment where melatonin （2 mg/kg BW） was implanted at the end of April and end of June. Cashmere growth and shedding were observed for approximately ] year following implantation. Fibre samples were collected monthly to determine cumulative cashmere length. Initiation and cessation dates for cashmere growth as well as the rate of cashmere growth were calculated. Cashmere yield, weight gain of dam, kidding date, litter size, and birth weight were also recorded. Results： Melatonin implantation increased cashmere yield by 34.5 % （control 553.7 g vs. melatonin 745.0 g; P〈 0.01）, cashmere length by 21.3 % （control 95.2 mm vs. melatonin 115.4 mm; P 〈 0.01）, and decreased fibre diameter by 4.4 % （control 14.6 pm vs. melatonin 14.0 IJm; P 〈 0.03）. In melatonin-treated goats, the average initiation date was earlier than in control goats （May 18, 2013 vs. July 2, 20]3; P〈 0.01） but there was a similar cessation date （March 22, 2014 vs. March 27, 2014）. Consequently, the duration of cashmere growth was longer in melatonin-treated goats than in control goats （307 vs.270 days; P 〈 0.01）. The final BW, average daily gain, kidding date, litter size, and birth weight were not influenced by melatonin implantation. Conclusions： These data indicate that melatonin implantation （2 mg/kg BW） on two occasions （late April and June） increased cashmere yield by combining the induced growth of cashmere fleece with the typical growth and decreased the fi

关键词： Cashmere goat Cashmere yield Fibre characteristics Growth performance Melatonin,Reproductive performance

Deletion and down-regulation of SMAD4 gene in colorectal cancers in a Chinese population

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Cancer Research 2014年第5期26卷 525-531页

作者： Yanling Ma Fei Yan Li Li Li Liu jianhai Sun Department of Oncology Zhongshan HospitalWuhan University

Objective： Colorectal cancer（CRC） is one of the most common types of human cancers. As a tumor suppressor, SMAD4 plays a key role in colorectal carcinogenesis and invasiveness. Copy number variations（CNVs） of the SMAD4 gene have been reported to be associated with cancer pathogenesis in array-based studies in different populations. Here we aimed to investigate the CNVs of the SMAD4 gene in a relatively large number of CRC patients from China. Methods： In the present study, we collected 147 Chinese CRC tumors as well as self-paired normal control tissues. Quantitative PCR was carried out to examine the copy number as well as the m RNA expression of the SMAD4 gene. Results： Our results showed that the copy number deletions of SMAD4 were frequent in a relatively high percentage of CRC samples（34.7%, 51 out of 147）. There was a positive correlation between the copy number decrease of SMAD4 and tumor progression in CRCs. Furthermore, copy number loss of SMAD4 was correlated with decreased m RNA expression.Conclusions： These findings suggested that the copy number deletions of SMAD4 were frequent in CRC patients from China and had the potential to serve as a diagnostic indicator, alone or in combination with other markers, for CRC.

关键词： Colorectal cancer(CRC) SMAD4 copy number variation(CNV) gene expression

Neurodynamics analysis of cochlear hair cell activity

在线全文

学校读者我要写书评

暂无评论

Theoretical & Applied Mechanics Letters 2020年第1期10卷 8-15页

作者： Weifeng Rong Rubin Wang jianhai Zhang Wanzeng Konga School of Computer Science Hangzhou Dianzi UniversityHangzhou 310018China Institute for Cognitive Neurodynamics East China University of Science and TechnologyShanghai 200237China

There have been many studies on the effect of cochlea basal membrane movement on the resolution of different frequencies and ***,these studies did not take into account the influence of power and energy consumption of the hair cells in the process of the electromotility movement,as well as the neurodynamic mechanism that produced this *** makes previous studies unable to fully clarify the function of outer hair cells(OHCs)and the mechanism of sound *** this end,we introduce the gate conductance characteristics of the hair cells in the mechanical process of increasing frequency *** research finds that the low attenuation of OHCs membrane potential and the high gain in OHC power and energy consumption caused that OHC amplification is driven by *** research results show that the amplification of the OHCs is driven by low attenuation of membrane potential and high gain of power and energy *** conclusion profoundly reveals the physiological mechanism of the electromotility movement.

关键词： Hair cells Sound frequencies Membrane potential Power Outer hair cell amplification

A new active rehabilitation training mode for upper limbs based on Tai Chi Pushing Hands

在线全文

学校读者我要写书评

暂无评论

Biomimetic Intelligence & Robotics 2024年第3期4卷 82-92页

作者： xiangpan Li Liaoyuan Li jianhai Han Bingjing Guo Ganqin Du School of Mechatronics Engineering Henan University of Science and TechnologyLuoyang 471003China Henan Provincial Key Laboratory of Robotics and Intelligent Systems Luoyang 471003China School of Automotive Engineering Hubei University of Automotive TechnologyShiyan 442002China Hubei Key Laboratory of Automotive Power Train and Electronic Control Shiyan 442002China The First Affiliated Hospital of Henan University of Science and Technology Luoyang 471003China

Robot-assisted rehabilitation is a crucial approach to restoring motor function in the ***,the current training trajectory lacks sufficient theoretical or practical support,and the monotony of single-mode training is a *** Chi Pushing Hands,a beneficial and effective daily exercise,has been shown to improve balance function,psychological state,and motor function of the upper extremities in patients recovering from *** address these issues,we propose a new active rehabilitation training that incorporates Tai Chi Pushing Hands movements and yin-yang balance *** training trajectory and direction are encoded by the velocity field and consist of two processes:yang(push)and yin(return).During yang,the limb actively pushes the robot to move,while during yin,the limb actively follows the robot’s *** provide necessary assistance,an admittance controller with self-adaptive parameters is *** addition,we introduce two indexes,the‘Intention Angle’(ϖ)and the time ratio(Γ),to evaluate motion perception *** experiment was conducted on a 4-degree-of-freedom upper limb rehabilitation robot platform,and the subjects were separated into a familiar group and an unfamiliar *** experiment results show that the training could be completed well no matter whether the subject is familiar with Tai Chi Pushing Hands or *** parameters and the movement of the robot can be adjusted based on the interactive force to adapt to the ability of the subject.

关键词： Tai Chi Push Hands Velocity field Self-adaptive admittance Upper limb rehabilitation Active training