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1206篇 您的检索式:作者名="Han Ding"
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1Prevalence of Autism Spectrum Disorder in China:A Nationwide Multi-center Population-based Study Among Children Aged 6 to 12 Years显示文摘This study aimed to obtain the first national estimate of the prevalence of autism spectrum disorder(ASD) in Chinese children.We targeted the population of 6 to 12-year-old children for this prevalence study by multistage convenient cluster sampling.The Modified Chinese Autism Spectrum Rating Scale was used for the screening process.Of the target population of 142,086 children,88.5%(n=125,806) participated in the study.A total of 363 children were confirmed as having ASD.The observed ASD prevalence rate was 0.29%(95% CI:0.26%-0.32%) for the overall population.After adjustment for response rates,the estimated number of ASD cases was867 in the target population sample,thereby achieving an estimated prevalence of 0.70%(95% CI:0.64%-0.74%).The prevalence was significantly higher in boys than in girls(0.95%;95% CI:0.87%-1.02% versus 0.30%;95%CI:0.26%-0.34%;P <0.001).Of the 363 confirmed ASD cases,43.3% were newly diagnosed,and most of those(90.4%) were attending regular schools,and 68.8% of the children with ASD had at least one neuropsychiatric comorbidity.Our findings provide reliable data on the estimated ASD prevalence and comorbidities in Chinese children.Hao Zhou Xiu Xu Weili Yan Xiaobing Zou Lijie Wu Xuerong Luo Tingyu Li Yi Huang Hongyan Guan Xiang Chen Meng Mao Kun Xia Lan Zhang Erzhen Li Xiaoling Ge Lili Zhang Chunpei Li Xudong Zhang Yuanfeng Zhou Ding Ding Andy Shih Eric Fombonne Yi Zheng Jisheng Han Zhongsheng Sun Yong-hui Jiang Yi Wang LATENT-NHC Study Team 2020Neuroscience Bulletin2020,36,9:158
2Towards 6G wireless communication networks:vision,enabling technologies,and new paradigm shifts显示文摘The fifth generation(5G)wireless communication networks are being deployed worldwide from 2020 and more capabilities are in the process of being standardized,such as mass connectivity,ultra-reliability,and guaranteed low latency.However,5G will not meet all requirements of the future in 2030 and beyond,and sixth generation(6G)wireless communication networks are expected to provide global coverage,enhanced spectral/energy/cost efficiency,better intelligence level and security,etc.To meet these requirements,6G networks will rely on new enabling technologies,i.e.,air interface and transmission technologies and novel network architecture,such as waveform design,multiple access,channel coding schemes,multi-antenna technologies,network slicing,cell-free architecture,and cloud/fog/edge computing.Our vision on 6G is that it will have four new paradigm shifts.First,to satisfy the requirement of global coverage,6G will not be limited to terrestrial communication networks,which will need to be complemented with non-terrestrial networks such as satellite and unmanned aerial vehicle(UAV)communication networks,thus achieving a space-airground-sea integrated communication network.Second,all spectra will be fully explored to further increase data rates and connection density,including the sub-6GHz,millimeter wave(mmWave),terahertz(THz),and optical frequency bands.Third,facing the big datasets generated by the use of extremely heterogeneous networks,diverse communication scenarios,large numbers of antennas,wide bandwidths,and new service requirements,6G networks will enable a new range of smart applications with the aid of artificial intelligence(AI)and big data technologies.Fourth,network security will have to be strengthened when developing 6G networks.This article provides a comprehensive survey of recent advances and future trends in these four aspects.Clearly,6G with additional technical requirements beyond those of 5G will enable faster and further communications to the extent that the boundary between physical and cyber worlds disappears.Xiaohu YOU Cheng-Xiang WANG Jie HUANG Xiqi GAO Zaichen ZHANG Mao WANG Yongming HUANG Chuan ZHANG Yanxiang JIANG Jiaheng WANG Min ZHU Bin SHENG Dongming WANG Zhiwen PAN Pengcheng ZHU Yang YANG Zening LIU Ping ZHANG Xiaofeng TAO Shaoqian LI Zhi CHEN Xinying MA Chih-Lin I Shuangfeng HAN Ke LI Chengkang PAN Zhimin ZHENG Lajos HANZO Xuemin(Sherman)SHEN Yingjie Jay GUO Zhiguo DING Harald HAAS Wen TONG Peiying ZHU Ganghua YANG Jun WANG Erik GLARSSON Hien Quoc NGO Wei HONG Haiming WANG Debin HOU Jixin CHEN Zhe CHEN Zhangcheng HAO Geoffrey Ye LI Rahim TAFAZOLLI Yue GAO HVincent POOR Gerhard P.FETTWEIS Ying-Chang LIANG 2021Science China(Information Sciences)2021,64,1:122
3Efficient generation of hepatocyte-like cells from human induced pluripotent stem cells显示文摘人的导致的 pluripotent 茎(iPS ) 房间类似于胚胎的茎(ES ) 房间,和罐头强烈地增殖并且区分进许多房间类型。然而,人的 iPS 房间的肝的区别还没被报导了。在这份报告,人的 iPS 房间被导致由一个逐步的协议区分进肝的房间。肝房间标记的表达式和人的 iPS 的肝相关的函数导出房间的房间被监视并且与区分的人的 ES 房间和主要人的 hepatocytes 的相比。在白天 7 点的约 60% 区分的人的 iPS 房间表示了肝的标记 alpha fetoprotein 和白长袍的。在白天 21 点的区分的房间包括白朊 Asecretion,肝糖合成,脲生产和可诱导的细胞色素 P450 活动展出了肝房间功能。肝的标记的表示和 iPS 的肝相关的功能导出房间的肝的房间比得上人的 ES 导出房间的肝的房间的。这些结果证明人的 iPS 房间,类似于人的 ES 房间,能高效地被导致区分房间进象 hepatocyte 一样。Zhihua Song Jun Cai Yanxia Liu Dongxin Zhao Jun Yong Shuguang Duo Xijun Song Yushan Guo Yang Zhao Han Qin Xiaolei Yin Chen Wu Jie Che Shichun Lu Mingxiao Ding Hongkui Deng 2009Cell Research2009,19,11:63
4Effects of AT1 receptor antagonist,Iosartan,on rat hepatic fibrosis induced by CCl_4显示文摘AIM To investigate effect of losartan,an AT1receptor antagonist,on hepatic fibrosis induced byCCl;and to determine whether or not AT1receptors are expressed on hepatic stellate cells,METHODS AND RESULTS Fifty male Sprague-Dawley rats,weighing(180±20)g,wererandomized into five groups(control group,modelgroup,and three losartan treated groups),inwhich all rats were given the subcutaneousinjection of 40% CCl4(every 3 days for 6 weeks)except for rats of control group.Rats of losartan-treated groups were treated with losartan(20 mg/kg,10 mg/kg,5 mg/kg,daily gavage),After 6weeks liver tissue and serum samples of all ratswere examined.Serum hyaluronic acid(HA),procollagen typeⅢ(PCⅢ)were detected byradioimmunoassays,van Giesion collagen stainingwas used to evaluate the extracellular matrix of ratswith liver fibrosis.The expression of AT1receptors,transforming growth factor-beta(TGF-β),and alpha-smooth muscle actin(a-SMA)inliver tissue were determined byimmunohistochemical techniques.Compared withmodel group,serum ALT and AST of losartan-treated groups were significantly reduced(t=4.20,P<0.01 and t=4.57,P<0.01).Serum HAand PCⅢalso had significant differences(t=3.53,P<0.01 and t=2.20,P<0.05).Thedegree of fibrosis was improved by losartan and correlated with the expressions of AT1 receptors,TGF-β,and α-SMA in liver tissue.CONCLUSION AT1 receptor antagonist,losartan,could limit the progression of the hepatic fibrosisinduced by CCl4.The mechanism may be related tothe decrease in the expression of AT1 receptorsand TGF-β,ameliorating the injury of hepatocytes;activation of local renin-angiotensin system mightrelate to hepatic fibrosis;and during progressionof fibrosis,activated hepatic stellate cells mightexpress AT1 receptors.Hong Shan Wei Ding Guo Li Han Ming Lu Yu Tao Zhan Zhi Rong Wang Xin Huang Jing Zhang Ji Lin Cheng Qin Fang Xu Department of Gastroenterology,Xinhua Hospital,Shanghai Second Medical University,Shanghai 200092,China 2000World Journal of Gastroenterology2000,6,4:42
5Prognostic nutritional index predicts postoperative complications and long-term outcomes of gastric cancer显示文摘AIM:To investigate the impact of prognostic nutritional index(PNI)on the postoperative complications and long-term outcomes in gastric cancer patients undergoing total gastrectomy.METHODS:The data for 386 patients with gastric cancer were extracted and analyzed between January2003 and December 2008 in our center.The patients were divided into two groups according to the cutoff value of the PNI:those with a PNI≥46 and those with a PNI<46.Clinicopathological features were compared between the two groups and potential prognostic factors were analyzed.The relationship between postoperative complications and PNI was analyzed by logistic regression.The univariate and multivariate hazard ratios were calculated using the Cox proportional hazard model.RESULTS:The optimal cutoff value of the PNI was set at 46,and patients with a PNI≥46 and those with a PNI<46 were classified into PNI-high and PNI-low groups,respectively.Patients in the PNI-low group were more likely to have advanced tumor(T),node(N),and TNM stages than patients in the PNI-high group.The low PNI is an independent risk factor for the incidence of postoperative complications(OR=2.223).The 5-year overall survival(OS)rates were 54.1%and21.1%for patients with a PNI≥46 and those with a PNI<46,respectively.The OS rates were significantly lower in the PNI-low group than in the PNI-high group among patients with stagesⅡ(P=0.001)andⅢ(P<0.001)disease.CONCLUSION:The PNI is a simple and useful marker not only to identify patients at increased risk for postoperative complications,but also to predict long-term survival after total gastrectomy.The PNI should be included in the routine assessment of advanced gastric cancer patients.Nan Jiang Jing-Yu Deng Xue-Wei Ding Bin Ke Ning Liu Ru-Peng Zhang Han Liang 2014World Journal of Gastroenterology2014,20,30:41
6Radiofrequency ablation or microwave ablation combined with transcatheter arterial chemoembolization in treatment of hepatocellular carcinoma by comparing with radiofrequency ablation alone显示文摘Objective:To compare radiofrequency ablation(RFA) or microwave ablation(MWA) and transcatheter arterial chemoembolization(TACE) with RFA or MWA monotherapy in hepatocellular carcinoma(HCC).Methods:A prospective,randomized,controlled trial was conducted on 94 patients with HCC ≤7 cm at a single tertiary referral center from June 2008 to June 2010 at the Department of Hepatobiliary Surgery,the Second Affiliated Hospital of Southeast University.The patients were randomly assigned into the TACERFA or TACE-MWA(combined treatment group) and the RFA-alone or MWA-alone groups(control group).The primary end point was overall survival.The secondary end point was recurrence-free survival,and the tertiary end point was adverse effects.Results:Until the time of censor,17 patients in the TACE-RFA or TACE-MWA group had died.The median follow-up time of the patients who were still alive for the TACE-RFA or TACE-MWA group was 47.5±11.3 months(range,29 to 62 months).The 1-,3- and 5-year overall survival for the TACE-RFA or TACE-MWA group was 93.6%,68.1% and 61.7%,respectively.Twenty-five patients in the RFA or MWA group had died.The median follow-up time of the patients who were still alive for the RFA or MWA group was 47.0±12.9 months(range,28 to 62 months).The 1-,3- and 5-year overall survival for the RFA or MWA group was 85.1%,59.6% and 44.7%,respectively.The patients in the TACE-RFA or TACE-MWA group had better overall survival than the RFA or MWA group [hazard ratio(HR),0.526;95% confidence interval(95% CI),0.334-0.823;P=0.002],and showed better recurrence-free survival than the RFA or MWA group(HR,0.582;95% CI,0.368-0.895;P=0.008).Conclusions:RFA or MWA combined with TACE in the treatment of HCC ≤7 cm was superior to RFA or MWA alone in improving survival by reducing arterial and portal blood flow due to TACE with iodized oil before RFA.Yongxiang Yi Yufeng Zhang Qiang Wei Liang Zhao Jianbo Han Yan Song Ying Ding Guilan Lu Junmao Liu Huaiying Ding Feng Dai Xiaojun Tang 2014Chinese Journal of Cancer Research2014,26,1:29
7The regulatory role of AT 1 receptor on activated HSCs in hepat,c fibrogenesis,effects of RAS inhibitors on hepatic fibrosis induced by CCl_4显示文摘AIM To assess the effect of ACE inhibitor andAng Ⅱ type Ⅰ(AT1)receptor antagonist inpreventing hepatic fibrosis caused by CCl4administration in rats;to investigate whether ornot there are expression of AT 1 receptors onhepatic stellate cells;and to observe the effectof Ang Ⅱ on proliferation and ECM synthesis ofcultured HSCs.METHODS Studies were conducted in maleSprague-Dawley rats.Except for thehepatofibrotic model group and the controlgroup,in three treated groups,either enalapril(5 mg/kg),or Iosartan(10 mg/kg),or enalapril+Iosartan were given to the fibrotic rats bydaily gavage,and saline vehicle was given tomodel and normal control rats.After 6 weeks,liver fibrosis was assessed directly by hepaticmorphometric analysis,which has beenconsidered the gold standard for thequantification of fibrosis.The expressions of AT1 receptors and(α-mooth muscle actin,α-SMA)in liver tissue or isolated hepatic stellate cells(HSCs)were detected by immunohistochemicaltechniques.The effect of Ang Ⅱ on HSCproliferation was determined by MTT method.Effect of Ang Ⅱ on collagen synthesis of HSCswas determined by 3H-proline incorporation.RESULTS Contrasted to the fibrosis in rats ofthe model group,groups of rats treated with either enalapril or Iosartan,or a combination oftwo drugs showed a limited expansion of theinterstitium(4.23±3.70 vs 11.22±4.79,P<0.05),but no difference was observedamong three treated groups(5.38±3.43,4.96±2.96,4.23±2.70,P>0.05).Expression of AT 1receptors was found in fibrotic interstitium offibrotic rats,whereas in normal control rats theywere limited to vasculature only to a very slightdegree.AT 1 receptors were also expressed onactivated HSCs in the culture.At concentrationsfrom 10-9to 10-5mol/L,Ang Ⅱ stimulated HSCproliferation in culture in a dose-dependentmanner.Increasing Ang Ⅱ concentrationsproduced corresponding increases in 3H-prolineincorporation.Differences among groups were significant.CONCLUSION Angiotensin-converting enzyme inhibitors and AT I blocker may slow the progression of hepatic fibrosis; activated HSCs express AT 1 receptors, and Ang Ⅱ can stimulate the proliferation and collagen synthesis of HSCs in a dose-dependent manner; and activation of RAS may be related to hepatic fibrogenesis induced by CCI4.Hong Shan Wei Han Ming Lu Ding Guo Li Yu Tao Zhan Zhi Rong Wang Xin Huang Ji Lin Cheng Qin Fang Xu Department of Gastroenterology,Xinhua Hospital,Shanghai Second Medical University,Shanghai 200092,China 2000World Journal of Gastroenterology2000,6,6:27
8Networked Control Systems:A Survey of Trends and Techniques显示文摘Networked control systems are spatially distributed systems in which the communication between sensors, actuators,and controllers occurs through a shared band-limited digital communication network. Several advantages of the network architectures include reduced system wiring, plug and play devices,increased system agility, and ease of system diagnosis and maintenance. Consequently, networked control is the current trend for industrial automation and has ever-increasing applications in a wide range of areas, such as smart grids, manufacturing systems,process control, automobiles, automated highway systems, and unmanned aerial vehicles. The modelling, analysis, and control of networked control systems have received considerable attention in the last two decades. The ‘control over networks’ is one of the key research directions for networked control systems. This paper aims at presenting a survey of trends and techniques in networked control systems from the perspective of ‘control over networks’, providing a snapshot of five control issues: sampled-data control, quantization control, networked control, event-triggered control, and security control. Some challenging issues are suggested to direct the future research.Xian-Ming Zhang Qing-Long Han Xiaohua Ge Derui Ding Lei Ding Dong Yue Chen Peng 2020IEEE/CAA Journal of Automatica Sinica2020,7,1:25
9Tri-Co Robot: a Chinese robotic research initiative for enhanced robot interaction capabilities显示文摘Since the invention of the first industrial robot in 1959, the missions of robots have evolved from basic mechanical transfer or assistance to a diverse range of tasks through close interactions with environment, their human counterparts and robot peers. Through adaptation to uncertain and dynamic environments.Han Ding Xuejun Yang Nanning Zheng Ming Li Yinan Lai Hao Wu 2018National Science Review2018,5,6:24
10Third-order point contact approach for five-axis sculptured surface machining using non-ball-end tools(II): Tool positioning strategy显示文摘Based on the mathematical model describing the third-order approximation of the cutter envelope surface according to one given cutter location(CL),a tool positioning strategy is proposed for efficiently machining free-form surfaces with non-ball-end cutters.The optimal CL is obtained by adjusting the inclination and tilt angles of the cutter until its envelope surface and the design surface have the third-order contact at the cutter contact(CC)point,which results in a wide machining strip.The strategy can handle the constraints of machine joint angle limits,global collision avoidance and tool path smoothness in a nature way,and can be applied to general rotary cutters and complex surfaces.Numerical examples demonstrate that the third-order point contact approach can improve the machining strip width greatly as compared with the recently reported second-order one.ZHU LiMin 1 ,DING Han 2 &XIONG YouLun 2 1State Key Laboratory of Mechanical System and Vibration,Shanghai Jiao Tong University,Shanghai 200240,China 2State Key Laboratory of Digital Manufacturing Equipment and Technology,Huazhong University of Science and Technology,Wuhan 430074, China 2010Science China(Technological Sciences)2010,53,8:23
11Positive impact of adding No.14v lymph node to D2 dissection on survival for distal gastric cancer patients after surgery with curative intent显示文摘Background:D2 lymphadenectomy has been increasingly regarded as standard surgical procedure for advanced gastric cancer(GC),while the necessity of No.14 v lymph node(14v) dissection for distal GC is still controversial.Methods:A total of 920 distal GC patients receiving at least a D2 lymph node dissection in Department of Gastric Cancer,Tianjin Medical University Cancer Institute and Hospital were enrolled in this study,of whom,243 patients also had the 14 v dissected.Other 677 patients without 14 v dissection were used for comparison.Results:Forty-five(18.5%) patients had 14 v metastasis.There was no significant difference in 3-year overall survival(OS) rate between patients with and without 14 v dissection.Following stratified analysis,in TNM stages I,II,IIIa and IV,14 v dissection did not affect 3-year OS;in contrast,patients with 14 v dissection had a significant higher 3-year OS than those without in TNM stages IIIb and IIIc.In multivariate analysis,14 v dissection was found to be an independent prognostic factor for GC patients with TNM stage IIIb/IIIc disease [hazard ratio(HR),1.568;95% confidence interval(CI):1.186-2.072;P=0.002].GC patients with 14 v dissection had a significant lower locoregional,especially lymph node,recurrence rate than those without 14 v dissection(11.7 % vs.21.1%,P=0.035).Conclusions:Adding 14 v to D2 lymphadenectomy may be associated with improved 3-year OS for distal GC staged TNM Ⅲb/Ⅲc.Yuexiang Liang Liangliang Wu Xiaona Wang Xuewei Ding Hongmin Liu Bin Li Baogui Wang Yuan Pan Rupeng Zhang Ning Liu Han Liang 2015Chinese Journal of Cancer Research2015,27,6:22
12Quantifying Land Use Change in Zhejiang Coastal Region,China Using Multi-Temporal Landsat TM/ETM+Images显示文摘Landsat Thematic Mapper(TM)and Enhanced Thematic Mapper Plus(ETM+)images in 1985,1986,1993,1994 and 2001 were used to quantify the land use and land cover changes(LUCC)in the Zhejiang coastal region with a stratified unsupervised classification technique in conjunction with visual interpretation and to attempt an identification of the socioeconomic driving forces.In level I an overall accurate classification was achieved using a modified Anderson'sⅠ/Ⅱ/Ⅲ-level classification scheme.The overall accuracy of the land use classification at Anderson level I were 89.7% (1985),91.6%(1993),and 90.4%(2001).The most rapid land use change was a dramatic increase in urban or built-up areas,which quadrupled from 1985 to 2001.Over 90% of this newly expanded built-up area was originally paddy fields or other croplands.In different parts of the Zhejiang coastal region,urban land expansion was spatially uneven.Temporally, land use development did not stabilized,and the two study periods of time(1985-1993 and 1993-2001)had different transition styles.Socioeconomic factors,such as gross domestic product,total population,and financial expenditure,were all highly correlated with the expansion of urban or built-up areas.Based on the degree of urban sprawl and socioeconomic factors,cities and towns were further divided into six subgroups,which may help decision makers improve land use for the region.DING Han WANG Ren-Chao WU Jia-Ping ZHOU Bin SHI Zhou DING Li-Xia 2007Pedosphere2007,17,6:21
13Characteristics and prognosis of gastric cancer in patients aged ≥ 70 years显示文摘AIM:To elucidate the prognostic value of age for gastric cancer and identify the optimal treatment for elderly gastric cancer patients.METHODS:We enrolled 920 patients with gastric cancer who underwent gastrectomy between January 2003and December 2007 in our center.Patients were categorized into three groups:younger group(age<50years),middle-aged group(50-69 years),and elderly group(≥70 years).Clinicopathological features were compared among the three groups and potential prognostic factors were analyzed.The log-rank test was used to assess statistical differences between curves.Independent prognostic factors were identified by the Cox proportional hazards regression model.Stratified analysis was used to investigate the impact of age on survival at each stage.Cancer-specific survival was also compared among the three groups by excluding deaths due to reasons other than gastric cancer.We analyzed the potential prognostic factors for patients aged≥70years.Finally,the impact of extent of lymphadenectomy and postoperative chemotherapy on survival for each age group was evaluated.RESULTS:In the elderly group,there was a male predominance.At the same time,cancers of the upper third of the stomach,differentiated type,and less-invasive surgery were more common than in the younger or middle-aged groups.Elderly patients were more likely to have advanced tumor-node-metastasis(TNM)stage and larger tumors,but less likely to have distant metastasis.Although 5-year overall survival(OS)rate specific to gastric cancer was not significantly different among the three groups,elderly patients demonstrated a significantly lower 5-year OS rate than the younger and middle-aged patients(elderly vs middle-aged vs younger patients=22.0%vs 36.6%vs 38.0%,respectively).In the TNM-stratified analysis,the differences in OS were only observed in patients withⅡandⅢtumors.In multivariate analysis,only surgical margin status,pT4,lymph node metastasis,M1 and sex were independent prognostic factors for elderly patients.The5-year OS rate did not differ between elderly patients undergoing D1 and D2 lymph node resection,and these patients benefited little from chemotherapy.CONCLUSION:Age≥70 years was an independent prognostic factor for gastric cancer after gastrectomy.D1 resection is appropriate and postoperative chemotherapy is possibly unnecessary for elderly patients with gastric cancer.Yue-Xiang Liang Jing-Yu Deng Han-Han Guo Xue-Wei Ding Xiao-Na Wang Bao-Gui Wang Li Zhang Han Liang 2013World Journal of Gastroenterology2013,19,39:20
14A review of isolation methods, structure features and bioactivities of polysaccharides from Dendrobium species显示文摘Dendrobium,orchid,is a traditional Chinese herb medicine applied extensively as tonic and precious food for thousands of years recorded in ancient Chinese medical book'Shen Nong’s Materia Medica'.It’s well known that bioactivities are usually related to the ingredients’basis.Based on the previous research,Dendrobium species contain amino acid,sesquiterpenoids,alkaloids and polysaccharides.As the bioactive substances,carbohydrate shows extensive activities in antitumor,antiglycation,immune-enhancing,antivirus,antioxidant,antitumor and etc.Therefore,as the main biologically active substance,the exact structures and latent activities of polysaccharides from Dendrobium species are widely focused on.In this review,we focus on the advancements of extraction methods and diversity of structures and bioactivities of polysaccharides obtained from Dendrobium species.YUE Han ZENG Hui DING Kan 2020Chinese Journal of Natural Medicines2020,18,1:20
15Expansion and differentiation of human hepatocyte-derived liver progenitor-like cells and their use for the study of hepatotropic pathogens显示文摘The study of pathophysiological mecha nisms in huma n liver disease has bee n constrained by the in ability to expa nd primary hepatocytes in vitro while maintaining proliferative capacity and metabolic function. We and others have previously shown that mouse mature hepatocytes can be con verted to liver progenitor-like cells in vitro with defined chemical factors. Here we describe a protocol achieving efficient conversion of human primary hepatocytes into liver progenitor-like cells (HepLPCs) through delivery of developmentally relevant cues, including NAD +-dependent deacetylase SIRT1 signaling. These HepLPCs could be expanded sign ifica ntly duri ng in vitro passage. The expa nded cells can readily be con verted back into metabolically functional hepatocytes in vitro and upon tran splantati on in vivo. Under three-dime nsional culture conditions, differentiated cells gen erated from HepLPCs regai ned the ability to support infect io n or reactivatio n of hepatitis B virus (HBV). Our work dem on strates the utility of the con versi on betwee n hepatocyte and liver proge nitor-like cells for studying HBV biology and an tiviral therapies. These fin dings will facilitate the study of liver diseases and regenerative medicine.Gong-Bo Fu Wei-Jian Huang Min Zeng Xu Zhou Hong-Ping Wu Chang-Cheng Liu Han Wu Jun Weng Hong-Dan Zhang Yong-Chao Cai Charles Ashton Min Ding Dan Tang Bao-Hua Zhang Yi Gao Wei-Feng Yu Bo Zhai Zhi-Ying He Hong-Yang Wang He-Xin Yan 2019Cell Research2019,29,1:18
16Adverse factors increase preeclampsia-like changes in pregnant mice with abnormal lipid metabolism显示文摘Ding Xiaoyan Yang Zi Han Yiwei Yu Huan 2014Chinese Medical Journal2014,,15:18
17A general end-to-end diagnosis framework for manufacturing systems显示文摘The manufacturing sector is envisioned to be heavily influenced by artificial-intelligence-based technologies with the extraordinary increases in computational power and data volumes. A central challenge in the manufacturing sector lies in the requirement of a general framework to ensure satisfied diagnosis and monitoring performances in different manufacturing applications. Here, we propose a general data-driven,end-to-end framework for the monitoring of manufacturing systems. This framework, derived from deep-learning techniques, evaluates fused sensory measurements to detect and even predict faults and wearing conditions. This work exploits the predictive power of deep learning to automatically extract hidden degradation features from noisy, time-course data. We have experimented the proposed framework on 10 representative data sets drawn from a wide variety of manufacturing applications. Results reveal that the framework performs well in examined benchmark applications and can be applied in diverse contexts,indicating its potential use as a critical cornerstone in smart manufacturing.Ye Yuan Guijun Ma Cheng Cheng Beitong Zhou Huan Zhao Hai-Tao Zhang Han Ding 2020National Science Review2020,7,2:18
18Mining User Interest in Microblogs with a User-Topic Model显示文摘Microblogs have become an important platform for people to publish,transform information and acquire knowledge.This paper focuses on the problem of discovering user interest in microblogs.In this paper,we propose a topic mining model based on Latent Dirichlet Allocation(LDA) named user-topic model.For each user,the interests are divided into two parts by different ways to generate the microblogs:original interest and retweet interest.We represent a Gibbs sampling implementation for inference the parameters of our model,and discover not only user's original interest,but also retweet interest.Then we combine original interest and retweet interest to compute interest words for users.Experiments on a dataset of Sina microblogs demonstrate that our model is able to discover user interest effectively and outperforms existing topic models in this task.And we find that original interest and retweet interest are similar and the topics of interest contain user labels.The interest words discovered by our model reflect user labels,but range is much broader.HE Li JIA Yan HAN Weihong DING Zhaoyun 2014China Communications2014,11,8:17
19Mobile-robotic machining for large complex components:A review study显示文摘Even though the robotic machining has achieved great success in machining of small components, it lacks the competence to machine large complex components, such as wind turbine blade, train carriage, and aircraft wing. In order to cope with this issue,the mobile machining robot system, which consists of a robot arm integrated with a mobile platform, is proposed to achieve the large workspace and high dexterity, and thus has the potential to machine the large complex components. However, due to the limitation of motion accuracy and structural stiffness, the current mobile-robots are hard to satisfy the high precision requirement of machining tasks. In this paper, some historical mobile-robotic machining systems are reviewed firstly, followed by some key techniques related to structure optimization, dynamics of the machining process, localization, and control techniques, which are fundamental for the structural stiffness and motion accuracy of mobile-robots. Finally, the prospect of mobile-robotic machining and the open questions are addressed.TAO Bo ZHAO XingWei DING Han 2019Science China(Technological Sciences)2019,62,8:17
20The role of provenance in the diagenesis of siliciclastic reservoirs in the Upper Triassic Yanchang Formation,Ordos Basin,China显示文摘A better understanding of the controls on reservoir quality has become essential in the petroleum exploration in recent years.Determining the original composition of the sediment framework is important not only for paleogeographic reconstructions,but it is also vital for predicting the nature of physical and chemical diagenesis of the potential reservoirs.Depositional setting and diagenesis are important factors in controlling the type and quality of most siliciclastic reservoirs.We studied the Upper Triassic Chang 8 and 6 members,where the relationship between sediment provenance and diagenesis was examined.The study attempts to clarify sediment provenance and post-depositional diagenetic modifications of the sandstones through systematic analytical methods including petrographic macro-and microscopic analysis of grain and heavy mineral types,and measurements of the palaeocurrent direction of the Yanchang Formation sediments in the outcrops in order to determine the provenance of the studied sediments.Furthermore,the relationship between framework grains,pore types and diagenesis of the sediments was analyzed by thin section petrographic characterization using a polarizing microscope.Additionally,a JEOL JSM-T330 scanning electron microscope(SEM) equipped with a digital imaging system was used to investigate the habits and textural relationships of diagenetic minerals.On the basis of our results,we believe that sediment provenance is a significant factor which controls the type and degree of diagenesis which may be expected in sandstones.In the Chang 8 and 6 members,the formation of chlorite rims and laumontite cement was observed where volcanic rock fragments constitute a large part of the framework grains.Furthermore,high biotite content provides abundant iron and magnesium and enables the formation of chlorite rims due to biotite hydrolysis.In addition,ductile deformation of biotite leads to strong mechanical compaction of the sediments.Conversely,high feldspar content diminishes the degree of mechanical compaction,however the dissolution of feldspar minerals in sandstones is commonly observed.Apart from feldspars,quartz and other rigid framework grains highly control the degree of mechanical compaction during the initial stage of burial(0-2 km).Ding Xiaoqi Han Meimei Zhang Shaonan 2013Petroleum Science2013,10,2:16
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