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| 1 | Tibetan Plateau climate dynamics: recent research progress and outlook显示文摘This paper reviews progress in the study of Tibetan Plateau(TP) climate dynamics over the past decade.Several theoretical frameworks, including thermal adaptation and the TP sensible heat(SH) driving air-pump, have been developed to identify the mechanisms responsible for the circulation anomaly produced by thermal forcing of the TP. Numerical simulations demonstrate that the thermal efects of large-scale orography, including the Tibetan and Iranian Plateaus(TIP), are crucial for the formation of the East Asian and South Asian summer monsoons(SASM) because the surface SH of the TIP is the major driver of the water vapor transport required for the genesis of the north branch of the SASM. he large-scale orography of the TP afects the Asian climate through thermal forcing in spring and summer, and mechanical forcing in winter. he TP forcing can also inluence the Asian summer monsoon(ASM) onset over the Bay of Bengal(BOB) by enhancing the BOB warm pool at the surface and by modulating the South Asian High(SAH) in the upper troposphere. On intra-seasonal timescales, the TP thermal forcing signiicantly modulates spring rainfall in southern China and generates the biweekly oscillation of the SAH in summer. Despite climate warming, the atmospheric heat source over the TP, particularly the spring SH,exhibits a clear weakening trend from the 1980 s to 2000 s. his weakening of the spring SH contributed to the anomalous ‘dry in the north' and ‘wet in the south' rainfall patern observed over East China. Also discussed are challenges to further understanding the mechanism of TP forcing on the multi-scale variability of the ASM. | Guoxiong Wu Anmin Duan Yimin Liu Jiangyu Mao Rongcai Ren Qing Bao Bian He Boqi Liu Wenting Hu | 2015 | National Science Review2015,2,1: | 51 |
| 2 | Advanced treatment of dyeing wastewater towards reuse by the combined Fenton oxidation and membrane bioreactor process显示文摘The performance of combined Fenton oxidation and membrane bioreactor (MBR) process for the advanced treatment of an effluent from an integrated dyeing wastewater treatment plant was evaluated. The experimental results revealed that under the optimum Fenton oxidation conditions (initial pH 5, H 2 O 2 dosage 17 mmol/L, and Fe 2+ 1.7 mmol/L) the average total organic carbon (TOC) and color removal ratios were 39.3% and 69.5% after 35 min of reaction, respectively. Results from Zahn-Wallens Test also represented that Fenton process was effective to enhance the biodegradability of the test wastewater. As for the further purification of MBR process, TOC removal capacity was examined at different hydraulic retention times (HRT) of 10, 18 and 25 hr. Under the optimum HRT of 18 hr, the average TOC concentration and color of the final MBR effluent were 16.8 mg/L and 2 dilution time, respectively. The sludge yield coefficient was 0.13 g MLSS/g TOC and TOC degradation rate was 0.078 kg TOC/(m 3 ·day). The final effluent of MBR can meet the reuse criteria of urban recycling water-water quality standard for miscellaneous water consumption GBT18920-2002. | Fei Feng Zhenliang XU Xiaohuan Li Wenting You Yang Zhen | 2010 | Journal of Environmental Sciences2010,22,11: | 27 |
| 3 | Indosinian isotope ages of plutons and deposits in southwestern Miaoershan-Yuechengling,northeastern Guangxi and implications on Indosinian mineralization in South China显示文摘The Miaoershan-Yuechengling complex pluton is the largest granitoid complex in the western Nanling metallogenic belt with a surface exposure of >3000 km2.The complex pluton is composed of an early stage granitoid batholith and late stage small intrusions.The early stage batholith contains mainly medium-grained porphyritic mica granite and porphyritic monzonite granite,whereas the late stage intrusions are composed of muscovite granite porphyry and muscovite monzonitic granite.There are many W-Sn-Mo-Pb-Zn-Cu ores in the contact zone between the batholith and strata,forming an ore-rich belt around the batholith.Based on zircon LA-ICP-MS U-Pb ages,the southwestern part of the early stage batholith formed at 228.7 ± 4.1 Ma(MSWD = 2.49),with slightly earlier magmatic activity at 243.0 ± 5.8 Ma(MSWD = 2.62).The Yuntoujie muscovite granite was associated with W-Mo mineralization and has a zircon LA-ICP-MS U-Pb age of 216.8 ± 4.9 Ma(MSWD = 1.44).The Re-Os isochron age of molybdenite from the Yuntoujie W-Mo ore was 216.8 ± 7.5 Ma(MSWD = 11.3).Our new isotope data suggest that the late stage intrusive stocks from the southwestern Miaoershan-Yuechengling batholith were closely associated with W-Mo mineralization from the Indosinian period.These new results together with previous isotope data,suggest that South China underwent not only the well-known Yanshanian mineralization event,but also a widespread Indosinian metallogenic event during the Mesozoic period.Therefore,South China has a greater potential for Indosinian mineralization than previously thought such that more attention should be given to the Indosinian ore prospecting in South China. | WU Jing LIANG HuaYing HUANG WenTing WANG ChunLong SUN WeiDong SUN YaLi LI Jing MO JiHai WANG XiuZhang | 2012 | Chinese Science Bulletin2012,57,9: | 28 |
| 4 | Chitosan conduits combined with nerve growth factor microspheres repair facial nerve defects显示文摘Microspheres containing nerve growth factor for sustained release were prepared by a compound method,and implanted into chitosan conduits to repair 10-mm defects on the right buccal branches of the facial nerve in rabbits.In addition,chitosan conduits combined with nerve growth factor or normal saline,as well as autologous nerve,were used as controls.At 90 days post-surgery,the muscular atrophy on the right upper lip was more evident in the nerve growth factor and normal saline groups than in the nerve growth factor-microspheres and autologous nerve groups.Electrophysiological analysis revealed that the nerve conduction velocity and amplitude were significantly higher in the nerve growth factor-microspheres and autologous nerve groups than in the nerve growth factor and normal saline groups.Moreover,histological observation illustrated that the diameter,number,alignment and myelin sheath thickness of myelinated nerves derived from rabbits were higher in the nerve growth factor-microspheres and autologous nerve groups than in the nerve growth factor and normal saline groups.These findings indicate that chitosan nerve conduits combined with microspheres for sustained release of nerve growth factor can significantly improve facial nerve defect repair in rabbits. | Huawei Liu Weisheng Wen Min Hu Wenting Bi Lijie Chen Sanxia Liu Peng Chen Xinying Tan | 2013 | Neural Regeneration Research2013,8,33: | 22 |
| 5 | Thiolactone copolymer donor gifts organic solar cells a 16.72% efficiency显示文摘Since 1995,bulk-heterojunction organic solar cells consisting of one or two organic donors and one or two organic acceptors have been fighting for high power conversion efficiencies(PCEs)and good stability[1].Until recent years,this next-generation photovoltaic technology starts to offer decent PCEs,shedding the light on commercialization,and attracting great attention again[2-14].Compared w让h the continuously emerging highperformance nonfullerene acceptors,high-performance donors are rare. | Ji Xiong Ke Jin Yufan Jiang Jianqiang Qin Tan Wang Jinfeng Liu Qishi Liu Haili Peng Xiongfeng Li Anxin Sun Xianyi Meng Lixiu Zhang Ling Liu Wenting Li Zhimin Fang Xue Jia Zuo Xiao Yaqing Feng Xiaotao Zhang Kuan Sun Shangfeng Yang Shengwei Shi Liming Ding | 2019 | Science Bulletin2019,64,21: | 17 |
| 6 | Prototype for 5G New Air Interface Technology SCMA and Performance Evaluation显示文摘Sparse code multiple access(SCMA) is a novel non-orthogonal multiple access scheme proposed to meet the challenging demand of the future 5G communications, especially in support of the massive connections. The coded bits from each data stream will be directly mapped as multi-dimensional SCMA codeword in complex domain and then spread onto the physical resource elements in a sparse manner. The number of codewords that can be nonorthogonally multiplexed in one SCMA block can be made much larger than the number of orthogonal resource elements therein, resulting in an overloaded system. The sparsity in the spreading pattern and the design in the multidimensional modulator jointly ensure the SCMA codewords can be robustly decoded with low complexity. In this paper, we focus on the low complexity receiver design and verified the superior of an SCMA system via simulations and real-time prototyping. Lab tests and field tests all show that SCMA is a promising candidate for 5G non-orthogonal multiple access which can provide up to 300% overloading that triples the whole system throughput while still enjoying the link performance close to orthogonal transmissions. | LU Lei CHEN Yan GUO Wenting YANG Huilian WU Yiqun XING Shuangshuang | 2015 | China Communications2015,12,S1: | 15 |
| 7 | Chloroplast phylogenomics of the New World grape species (Vitis, Vitaceae)显示文摘Vitis L。(葡萄类) 是经济地很重要的水果庄稼,葡萄和酒的来源。在类以内的种系发生的关系是高度争论的。此处,我们从整个 plastomes 采用顺序数据试图提高 Vitis 种系发生的分辨率。结果作为 monophyletic 支持新世界 Vitis 亚属 Vitis。在 clade 以内, V。californica 是到仍然保持新的姐妹世界 Vitis 亚属 Vitis。在亚属 Vitis 以内,而且,欧亚的 clade 要用体力地被支持并且是到新世界 clade 的姐妹。Vitis vinifera ssp 的 clade。vinifera 和 V。vinifera ssp。sylvestris 是到 Vitis 的核心亚洲人 clade 的姐妹。在北美洲的几普遍的种被发现例如,是在 plastome 树上的 nonmonophyletic 广泛地定义的 Vitis cinerea 和 V。aestivalis 各个需要被分成几种。可能也 nonmonophyly 某种类由于在北美的 Vitis 的杂交的普通出现。由进九个系列的 Munson 的北美的 Vitis 的分类基于种系发生的结果被讨论。分叉时间和系多样化的分析在在晚第三纪开始的北美洲支持 Vitis 的快速的放射。 | Jun Went AJ Harris Yash Kalburgi Ning Zhang Yuan Xu Wei Zheng Stefanie M. Ickert-Bondt Gabriel Johnson Elizabeth A. Zimmer | 2018 | Journal of Systematics and Evolution2018,56,4: | 14 |
| 8 | Gold nanorods together with HSP inhibitor-VER-155008 micelles for colon cancer mild-temperature photothermal therapy显示文摘Enhancing the heat-sensitivity of tumor cells provides an alternative solution to maintaining the therapeutic outcome of photothermal therapy(PTT). In this study, we constructed a therapeutic system, which was composed of methoxy-polyethylene-glycol-coated-gold-nanorods(MPEG-AuN R) and VER-155008-micelles, to evaluate the effect of VER-155008 on the sensitivity of tumor cells to heat, and further investigate the therapeutic outcome of MPEG-AuN R mediated PTT combined with VER-155008-micelles. VER-155008-micelles downregulate the expression of heat shock proteins and attenuate the heat-resistance of tumor cell. The survival of HCT116 cells treated with VER-155008-micelles under 45 ℃ is equal to that treated with high temperature hyperthermia(55 ℃) in vitro. Furthermore, we proved either the MPEG-AuN R or VER-155008-micelles can be accumulate in the tumor site by photoacoustic imaging and fluorescent imaging. In vivo anti-cancer evaluation showed that tumor size remarkably decreased(smaller than 100 mm^3 or vanished) when treated with combing 45℃ mild PTT system, which contrasted to the tumor size when treated with individual 45℃ mild PTT(around 500nm^3) or normal saline as control(larger than 2000 nm^3). These results proved that the VER-155008-micelles can attenuate the heat-resistance of tumor cells and enhance the therapeutic outcome of mild-temperature photothermal therapy. | Xichuan Tang Liwei Tan Kun Shi Jinrong Peng Yao Xiao Wenting Li Lijuan Chen Qian Yang Zhiyong Qian | 2018 | Acta Pharmaceutica Sinica B2018,8,4: | 12 |
| 9 | CAS FGOALS-f3-L Model Datasets for CMIP6 Historical Atmospheric Model Intercomparison Project Simulation显示文摘The outputs of the Chinese Academy of Sciences(CAS) Flexible Global Ocean–Atmosphere–Land System(FGOALS-f3-L) model for the baseline experiment of the Atmospheric Model Intercomparison Project simulation in the Diagnostic,Evaluation and Characterization of Klima common experiments of phase 6 of the Coupled Model Intercomparison Project(CMIP6) are described in this paper. The CAS FGOALS-f3-L model, experiment settings, and outputs are all given. In total,there are three ensemble experiments over the period 1979–2014, which are performed with different initial states. The model outputs contain a total of 37 variables and include the required three-hourly mean, six-hourly transient, daily and monthly mean datasets. The baseline performances of the model are validated at different time scales. The preliminary evaluation suggests that the CAS FGOALS-f3-L model can capture the basic patterns of atmospheric circulation and precipitation well, including the propagation of the Madden–Julian Oscillation, activities of tropical cyclones, and the characterization of extreme precipitation. These datasets contribute to the benchmark of current model behaviors for the desired continuity of CMIP. | Bian HE Qing BAO Xiaocong WANG Linjiong ZHOU Xiaofei WU Yimin LIU Guoxiong WU Kangjun CHEN Sicheng HE Wenting HU Jiandong LI Jinxiao LI Guokui NIAN Lei WANG Jing YANG Minghua ZHANG Xiaoqi ZHANG | 2019 | Advances in Atmospheric Sciences2019,36,8: | 12 |
| 10 | Dietary supplementation with Clostridium butyricum improves growth performance of broilers by regulating intestinal microbiota and mucosal epithelial cells显示文摘Clostridium butyricum has been widely considered an antibiotic substitute in recent years.It can promote growth performance,improve the immune response and enhance the intestinal barrier function of the host.In the present study,1-d-old Arbor Acres(AA)broilers were fed C.butyricum(1×109 cfu/kg)for 28 d.The transcriptomic characteristics of epithelial cells of the cecal mucosa were determined by RNA-sequence,and the cecal microbiota composition was explored by 16 S ribosomal RNA gene sequencing.The changes in the intestinal mucosa of broilers were then analyzed by tissue staining.Gene Ontology(GO)annotations identified substance transport and processes and pathways that might participate in intestinal development and cell viability.Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway analysis revealed that the differentially expressed genes are involved in numerous pathways related to amino acid and vitamin metabolism and antioxidant and defensive functions,among others.The relative expression of some genes associated with intestinal barrier function(claudins 2,15,19,and 23,tight junction proteins 1,2,and 3 and mucin 1)was significantly increased in the treatment group(P<0.05 or P<0.01).Moreover,the proportion of Firmicutes was higher in the C.butyricum-treated group,whereas the proportion of Proteobacteria was higher in the control group.At the genus level,the relative abundances of Butyricicoccus and Lactobacillus,among other bacteria,were increased after C.butyricum supplementation.The tissue staining analysis showed that the cecal mucosa of broilers was significantly ameliorated after the addition of C.butyricum(P<0.05 or P<0.01).These results showed that dietary supplementation with C.butyricum can enhance the antioxidant capacity,mucosal barrier function,and stabilize the cecal microbiota,resulting in improving the growth performance. | Laipeng Xu Xiangli Sun Xianhua Wan Keke Li Fuchun Jian Wenting Li Ruirui Jiang Ruili Han Hong Li Xiangtao Kang Yanbin Wang | 2021 | Animal Nutrition2021,,4: | 12 |
| 11 | Predictive values of multidetector-row computed tomography combined with serum tumor biomarkers in preoperative lymph node metastasis of gastric cancer显示文摘Objective: Multidetector-row computed tomography(MDCT) and serum tumor biomarkers are commonly used to evaluate the preoperative lymph node metastasis and the clinical staging of gastric cancer(GC). This study intends to evaluate the clinical predictive value of MDCT and serum tumor biomarkers in lymph node metastasis of GC.Methods: The clinicopathologic data of 445 GC patients who underwent radical gastrectomy were retrospectively analyzed to evaluate the diagnostic value of MDCT and serum tumor biomarkers in lymph node metastatic staging of GC before surgery.Results: With the multinomial logistic regression analysis, the independent relative factors of lymph node metastasis of GC were identified as tumor size, depth of tumor invasion, vessel invasion, vascular embolus, and soft tissue invasion. The optimal critical value of the short diameter of lymph nodes detected by MDCT scanning for evaluation of preoperative lymph node metastasis was 6.0 mm, with 75.7% as predictive accuracy of lymph node metastasis compared to the postoperative pathological results of GC patients. In addition, the critical value of the short diameter of lymph nodes combined with serum tumor biomarkers [including carbohydrate antigen(CA)-724 and CA-199] could show an enhancement of predictive sensitivity of lymph node metastasis(up to 89.3%) before surgery.Conclusions: MDCT combined with serum tumor biomarkers should be adopted to improve preoperative sensitivity and accuracy of lymph node metastasis for GC patients. | Huihui Bai Jingyu Deng Nannan Zhang Huifang Liu Wenting He Jinyuan Liu Han Liang | 2019 | Chinese Journal of Cancer Research2019,31,3: | 11 |
| 12 | Isolation,purification,structural characteristic and antioxidative property of polysaccharides from A.cepa L.var.agrogatum Don显示文摘Allium cepa L.var.agrogatum Don(ALAP)is commonly consumed in China as well as other regions and has various beneficial health effects.A novel acidic polysaccharide(named ALAP-21)was obtained from ALAP by ultrasonic and microwave-assisted extraction and purification using DEAE-52 anion exchange and Sephadex G-100 columns.The monosaccharide composition,structural and antioxidative properties of ALAP-21 were investigated by GC–MS chromatography,FT-IR and NMR spectroscopies and three antioxidative activity tests in vitro.The results showed that ALAP-21 was a heteropolysaccharide composed of glucose,galacturonic acid,mannose,galactose,arabinose,rhamnose,xylose,fructose and glucuronic acid with a relative molar ratio of 26.282:27.546:11.400:4.781:2.467:2.445:3.622:1.106:1.753,owning(1→4)-β-d-Glcp,(1→4)-β-d-GalAp6Me3OA,(1→4)-β-d-Galp6OMe,(1→2)-β-l-Rhap,(1→4)-β-d-Manp glycosidic linkages.(1→4)-β-d-Glcp and(1→4)-β-d-GalAp6Me3OA residues might be the main components of the sugar chain backbone of ALAP-21.Furthermore,ALAP-21 exhibited high potential for DPPH radicals(82.02%),hydroxyl radicals(53.33%)and superoxide anion radicals(50.28%).These results provide a reference for further research and rational development of ALAP polysaccharides. | Hongcheng Liu Hongxiu Fan Jing Zhang Shanshan Zhang Wenting Zhao Tingting Liu Dawei Wang | 2020 | Food Science and Human Wellness2020,9,1: | 10 |
| 13 | Distinct element method analysis and field experiment of soil resistance applied on the subsoiler显示文摘Since the design of the subsoiler is a complex work,the interaction between the subsoiler and soil was investigated by using Distinct Element Method(DEM)in this study.Based on the traditional discrete element theory,the 3D model of soil particles and the subsoiler were established after considering the liquid bridge force between soil particles.The operating resistance curves of the subsoiler were achieved after the DEM simulation at a speed of 1 m/s,and three depths of 180 mm,220 mm and 260 mm,respectively.The simulation curves agreed well with the field experimental results based on relative errors of 2.96%,14.95%and 7.15%,respectively,at three depths.All these data proved that it was feasible and favorable to analyze the performance of the subsoiler by using the DEM and it is of important significance for studying and further optimizing the structure of the subsoiler. | Li Bo Liu Fanyi Mu Junying Chen Jun Han Wenting | 2014 | International Journal of Agricultural and Biological Engineering2014,7,1: | 9 |
| 14 | Histopathology of Porcine kobuvirus in Chinese piglets显示文摘Dear Editor,Kobuvirus,classified as a new genus within the Picornaviridae family in 1999,is a non-enveloped virus with single-stranded,positive-sense genomic RNA(Pringle,1999).This genus contains 3 species currently recoganized:Aichivirus A(Ai V),Aichivirus B(BKo V),and Aichivirus C(PKo V).PKo V was first detected in | Fan Yang Xiaowan Liu Yuancheng Zhou Wenting Lyu Siyao Xu Zhiwen Xu Ling Zhu | 2015 | Virologica Sinica2015,30,5: | 9 |
| 15 | Numerical simulation and experimental study on electrothermal properties of carbon/glass fiber hybrid textile reinforced concrete显示文摘Carbon/glass fiber hybrid textile reinforced concrete is a relatively new composite material with good mechanical capacity and excellent electrical conductivity.Both small-scale slab heating experiments and numerical simulation are presented in this paper.Temperature variation curves obtained during heating indicate the effects of environmental temperature,heat-conducting layer thickness and electric heating power.Comparison of temperature rising between the situations with and without thermal isolation layer is given as well.The results indicate that the textile can form a good conductive heating network and generate enough heat to raise the temperature in the concrete when connected to a power supply,while the resistance of the slab remains stable during the heating.Numerical results are in good accordance with the experiments.Real time snow-melting experiment was conducted to verify the feasibility of deicing.The electrothermal properties of textile can be utilized for deicing and snow melting in a safe,environmentally friendly and efficient way. | XU ShiLang YU WenTing SONG ShiDe | 2011 | Science China(Technological Sciences)2011,54,9: | 8 |
| 16 | Ultrathin flexible electrospun carbon nanofibers reinforced graphene microgasbags films with three-dimensional conductive network toward synergetic enhanced electromagnetic interference shielding显示文摘In recent years,graphene-based composite films have been greatly developed in the field of electromagnetic shielding interference(EMI).However,it is still a huge challenge to prepare graphene-based composite films with excellent mechanical properties,conductivity and electromagnetic shielding properties.In this work,we adopted a facile and effective method by annealing the alkali-treated polyacrylonitrile(aPAN)nanofibers reinforced graphene oxide(GO)composite films at 2000°C to obtain graphene-carbon nanofibers composite films(GCFs).Microscopically,carbon nanofibers(CNFs)were intercalated into the graphene sheets,and microgasbags structure was formed during the heat treatment process.The special structure makes GCFs have superior tensile strength(10.4 MPa)at 5%strain.After repeated folding over1000 times,the films still demonstrate excellent structural integrity and flexibility performance.Interestingly,the graphene-based composite films with 10 wt%a PAN nanofibers exhibit an extremely low density of about 0.678 g/cm^(3)and excellent electrical conductivity of 1.72×10^(5)S/m.Further,an outstanding electromagnetic shielding effectiveness(SE)of 55–57 d B was achieved,and the corresponding value of the specific SE/thickness can reach 67,601–70,059 d B·cm^(2)/g,which is the highest among reported graphenebased shielding materials.The significant electromagnetic shielding performance is due to the synergistic enhancement effect brought by the excellent conductivity of carbon nanofibers and graphene,the formed effective conductive network and the microgasbags structure.Electromagnetism simulation further clarified that the underlying mechanism should be mainly attributed to the conduction loss and multiple reflections caused by the special structure of GCFs.This work will provide new solutions for low density,high flexibility and excellent electromagnetic shielding properties materials in the next generation of foldable and wearable electronics. | Likui Zhang Yao Chen Qian Liu Wenting Deng Yaoqun Yue Fanbin Meng | 2022 | Journal of Materials Science & Technology2022,,16: | 8 |
| 17 | A high-quality genome sequence of alkaligrass provides insights into halophyte stress tolerance显示文摘Alkaligrass(Puccinellia tenuiflora) is a monocotyledonous halophytic forage grass widely distributed in Northern China. It belongs to the Gramineae family and shares a close phylogenetic relationship with the cereal crops, wheat and barley. Here, we present a high-quality chromosome-level genome sequence of alkaligrass assembled from Illumina, Pac Bio and 10× Genomics reads combined with genome-wide chromosome conformation capture(Hi-C) data. The ~1.50 Gb assembled alkaligrass genome encodes 38,387 protein-coding genes, and 54.9% of the assembly are transposable elements, with long terminal repeats being the most abundant. Comparative genomic analysis coupled with stress-treated transcriptome profiling uncovers a set of unique saline-and alkaline-responsive genes in alkaligrass. The high-quality genome assembly and the identified stress related genes in alkaligrass provide an important resource for evolutionary genomic studies in Gramineae and facilitate further understanding of molecular mechanisms underlying stress tolerance in monocotyledonous halophytes. The alkaligrass genome data is freely available at http://gffzz284c18d2de364501h5uqnbxnpxqb66op6.ffgz.tsg.suse.edu.cn/data/alkaligrass.html. | Wenting Zhang Jie Liu Yongxue Zhang Jie Qiu Ying Li Baojiang Zheng Fenhong Hu Shaojun Dai Xuehui Huang | 2020 | Science China(Life Sciences)2020,63,9: | 8 |
| 18 | Automated pavement horizontal curve measurement methods based on inertial measurement unit and 3D profiling data显示文摘Pavement horizontal curve is designed to serve as a transition between straight segments,and its presence may cause a series of driving-related safety issues to motorists and drivers.As is recognized that traditional methods for curve geometry investigation are time consuming,labor intensive,and inaccurate,this study attempts to develop a method that can automatically conduct horizontal curve identification and measurement at network level.The digital highway data vehicle(DHDV) was utilized for data collection,in which three Euler angles,driving speed,and acceleration of survey vehicle were measured with an inertial measurement unit(IMU).The 3D profiling data used for cross slope calibration was obtained with PaveVision3 D Ultra technology at 1 mm resolution.In this study,the curve identification was based on the variation of heading angle,and the curve radius was calculated with kinematic method,geometry method,and lateral acceleration method.In order to verify the accuracy of the three methods,the analysis of variance(ANOVA) test was applied by using the control variable of curve radius measured by field test.Based on the measured curve radius,a curve safety analysis model was used to predict the crash rates and safe driving speeds at horizontal curves.Finally,a case study on 4.35 km road segment demonstrated that the proposed method could efficiently conduct network level analysis. | Wenting Luo Lin Li Kelvin C.P.Wang | 2016 | Journal of Traffic and Transportation Engineering(English Edition)2016,3,2: | 8 |
| 19 | GeoScope:Full 3D Geospatial Information System Case Study显示文摘Aiming at the integrative management and comprehensive applications of large-scale 3D geospatial information covering the full 3D space of a city,this paper briefly introduces the design and implementation of a full 3D GIS platform:GeoScope,which provides a professional solution for the massive full three-dimensional geospatial data integration,management,analysis,visualization,and applications.GeoScope is characterized by:(1) extendible software architecture based on the hierarchical message bus,facilitates multimodal integrative applications of 2D GIS and 3D GIS;(2) unified 3D city models,support multiscale semantic representation of outdoor & indoor and aboveground & underground 3D objects;(3) high-efficient 3D geospatial database engine,supports integrated management of massive 3D geospatial data for real-time applications;and (4) high-performance visualization engine exploiting the massively parallel computation architecture of modern GPUs,supports real-time realistic rendering of large-scale complicated 3D geospatial environments.The successful pilot application of GeoScope is also illustrated with the 3D city models of 8494 km2 of the whole Wuhan City,the largest city in middle China. | ZHANG Yeting ZHU Qing LIU Gang ZHENG Wenting LI Zhonghua DU Zhiqiang | 2011 | Geo-Spatial Information Science2011,14,2: | 7 |
| 20 | An Epidemic of Hepatitis A--Liaoning Province,2020显示文摘What is already known about this topic?Hepatitis A(HA)is caused by acute hepatitis A virus(HAV)infection and was once very common in China.Following the 2008 introduction of the HA vaccine into the national Expanded Program on Immunization(EPI),the incidence of reported HA in China decreased markedly.However,HA epidemics still occur in Liaoning Province every 3–5 years,although with far fewer cases than in the pre-HA-vaccination era.What is added by this report?Between January 1,2020 and March 18,2020,the number of reported cases of HA in Dalian and Dandong cities of Liaoning Province increased significantly compared with the same period in previous years.All cases were sporadic,and cases were seen in nearly every township.The increase in HA occurred one month after local fresh seafood became available with most cases being among adults.A casecontrol study showed that consuming raw or undercooked seafood,clams,snapping shrimp,and oysters were significantly associated with the increase in HA.What are the implications for public health practices?Strengthening health education for residents to avoid consumption of raw seafood and encouraging HAV vaccination of adults aged 20 to 54 years are important to prevent periodic HAV endemic outbreaks.Further multisectoral cooperation must be emphasized on HA surveillance in areas with a high prevalence of HA. | Jing Sun Yuanqiu Li Xing Fang Yan Wang Yinan Han Yang Liu Jingyuan Cao Wenting Zhou Hui Zheng Wenqing Yao | 2020 | China CDC weekly2020,2,30: | 7 |