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1Deep water bottom current deposition in the northern South China Sea显示文摘There are some active bottom currents on the northern continental slope of the South China Sea (SCS). Reflection seismic profiles show that the bottom current channels occur in the water depth range of 1000 to 2700 m,extending from the NE to the SW,leading to accumulation of discontinuous drifts with higher sedimentation rates on the eastern side of the channel. The stacking pattern of the layers sug-gests that these drifts propagated southwestward,following the direction of the bottom currents. One sedimentary drift to the southeast of the Dongsha Islands has the highest sedimentation rate of 97cm/ka in the last 12 ka. The sedimentary characteristics of the sediment layers indicate that these bottom currents are most likley caused by the water movement of a branch of the West Pacific Ocean Current,which enters the northern SCS via the Bashi Strait. Once formed,the bottom currents trans-port sediments along the northern slope of SCS southwestward and finally disappear into the central basin of the SCS. Due to the bottom current activity,the deep-sea sedimentary process in the northern SCS is complex.SHAO Lei LI XueJie GENG JianHua PANG Xiong LEI YongChang QIAO PeiJun WANG LiaoLiang WANG HongBin 2007Science China Earth Sciences2007,50,7:43
2New development thoughts on the bio-inspired intelligence based control for unmanned combat aerial vehicle显示文摘Bio-inspired intelligence is in the spotlight in the field of international artificial intelligence,and unmanned combat aerial vehicle(UCAV),owing to its potential to perform dangerous,repetitive tasks in remote and hazardous,is very promising for the technological leadership of the nation and essential for improving the security of society.On the basis of introduction of bioinspired intelligence and UCAV,a series of new development thoughts on UCAV control are proposed,including artificial brain based high-level autonomous control for UCAV,swarm intelligence based cooperative control for multiple UCAVs,hy-brid swarm intelligence and Bayesian network based situation assessment under complicated combating environments, bio-inspired hardware based high-level autonomous control for UCAV,and meta-heuristic intelligence based heterogeneous cooperative control for multiple UCAVs and unmanned combat ground vehicles(UCGVs).The exact realization of the proposed new development thoughts can enhance the effectiveness of combat,while provide a series of novel breakthroughs for the intelligence,integration and advancement of future UCAV systems.DUAN HaiBin 1 ,SHAO Shan 2 ,SU BingWei 3 &ZHANG Lei 41 State Key Laboratory of Science and Technology on Holistic Flight Control,School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics,Beijing 100191,China 2 Flight Control Department,Shenyang Aircraft Design and Research Institute,Shenyang 110035,China 3 Beijing Institute of Near Space Vehicle’s System Engineering,Beijing 100076,China 4Integration and Project Section,Air Force Equipment Academy,Beijing 100085,China 2010Science China(Technological Sciences)2010,53,8:32
3Beyond hypoxia: Occurrence and characteristics of black blooms due to the decomposition of the submerged plant Potamogeton crispus in a shallow lake显示文摘Organic matter-induced black blooms(hypoxia and an offensive odor) are a serious ecosystem disasters that have occurred in some large eutrophic shallow lakes in China. In this study, we investigated two separate black blooms that were induced by Potamogeton crispus in Lake Taihu, China. The main physical and chemical characteristics, including color- and odor-related substances, of the black blooms were analyzed. The black blooms were characterized by low dissolved oxygen concentration(close to 0 mg/L), low oxidation-reduction potential, and relatively low pH of overlying water. Notably higher Fe2+and∑S2-were found in the black-bloom waters than in waters not affected by black blooms. The black color of the water may be attributable to the high concentration of these elements, as black FeS was considered to be the main substance causing the black color of blooms in freshwater lakes. Volatile organic sulfur compounds, including dimethyl sulfide, dimethyl disulfide, and dimethyl trisulfide, were very abundant in the black-bloom waters. The massive anoxic degradation of dead Potamogeton crispus plants released dimethyl sulfide, dimethyl disulfide, and dimethyl trisulfide, which were the main odor-causing compounds in the black blooms. The black blooms also induced an increase in ammonium nitrogen and soluble reactive phosphorus levels in the overlying waters. This extreme phenomenon not only heavily influenced the original lake ecosystem but also greatly changed the cycling of Fe, S, and nutrients in the water column.Qiushi Shen Qilin Zhou Jingge Shang Shiguang Shao Lei Zhang Chengxin Fan 2014Journal of Environmental Sciences2014,26,2:33
4Exotic origin of the Chinese continental shelf: new insights into the tectonic evolution of the western Pacific and eastern China since the Mesozoic显示文摘The effect of paleo-Pacific subduction on the geological evolution of the western Pacific and continental China is likely complex. Nevertheless, our analysis of the distribution of Mesozoic granitoids in the eastern continental China in space and time has led us to an interesting conclusion: The basement of the continental shelf beneath East and South China Seas may actually be of exotic origin geologically unrelated to the continental lithosphere of eastern China. By accepting the notion that the Jurassic–Cretaceous granitoids in the region are genetically associated with western Pacific subduction and the concept that subduction may cease to continue only if the trench is being jammed, then the termination of the granitoidmagmatism throughout the vast region at *88 ± 2 Ma manifests the likelihood of ‘‘sudden'', or shortly beforehand(*100 Ma), trench jam of the Mesozoic western Pacific subduction. Trench jam happens if the incoming‘‘plate'' or portion of the plate contains a sizeable mass that is too buoyant to subduct. The best candidate for such a buoyant and unsubductable mass is either an oceanic plateau or a micro-continent. We hypothesize that the basement of the Chinese continental shelf represents such an exotic, buoyant and unsubductable mass, rather than seaward extension of the continental lithosphere of eastern China. The locus of the jammed trench(i.e., the suture) is predictably located on the shelf in the vicinity of, and parallel to, the arc-curved coastal line of the southeast continental China. It is not straightforward to locate the locus in the northern section of the East China Sea shelf because of the more recent(\20 Ma) tectonic re-organization associated with the opening of the Sea of Japan. We predict that the trench jam at *100 Ma led to the re-orientation of the Pacific plate motion in the course of NNW direction as inferred from the age-progressive Emperor Seamount Chain of Hawaiian hotspot origin(its oldest unsubdued Meiji and Detroit seamounts are *82 Ma),making the boundary between the Pacific plate and the newly accreted plate of eastern Asia a transform fault at the location east of the continental shelf of exotic origin. This explains the apparent *40 Myr magmatic gap from *88to *50 Ma prior to present-day western Pacific subduction initiation. We propose that basement penetration drilling on well-chosen sites is needed to test the hypothesis in order to reveal the true nature of the Chinese continental shelf basement. This testing becomes critical and cannot longer be neglected in order to genuinely understand the tectonic evolution of the western Pacific and its effect on the geology of eastern China since the Mesozoic, includingthe cratonic lithosphere thinning, related magmatism/mineralization, and the mechanism of the subsequent South China Sea opening, while also offering novel perspectives on aspects of the plate tectonics theory. We also suggest the importance of future plate tectonic reconstruction of the western Pacific to consider the nature and histories of the Chinese continental shelf of exotic origin as well as the probable transform plate boundary from *100 to*50 Ma. Effort is needed to reveal the true nature and origin of the *88 ± 2 Ma granitic gneisses in Taiwan and the 110–88 Ma granitoids on the Hainan Island.Yaoling Niu Yi Liu Qiqi Xue Fengli Shao Shuo Chen Meng Duan Pengyuan Guo Hongmei Gong Yan Hu Zhenxing Hu Juanjuan Kong Jiyong Li Jinju Liu Pu Sun Wenli Sun Lei Ye Yuanyuan Xiao Yu Zhang 2015Science Bulletin2015,60,18:32
5A comprehensive classification method for VOC emission sources to tackle air pollution based on VOC species reactivity and emission amounts显示文摘In China, volatile organic compound(VOC) control directives have been continuously released and implemented for important sources and regions to tackle air pollution. The corresponding control requirements were based on VOC emission amounts(EA), but never considered the significant differentiation of VOC species in terms of atmospheric chemical reactivity. This will adversely influence the effect of VOC reduction on air quality improvement. Therefore,this study attempted to develop a comprehensive classification method for typical VOC sources in the Beijing–Tianjin–Hebei region(BTH), by combining the VOC emission amounts with the chemical reactivities of VOC species. Firstly, we obtained the VOC chemical profiles by measuring 5 key sources in the BTH region and referencing another 10 key sources, and estimated the ozone formation potential(OFP) per ton VOC emission for these sources by using the maximum incremental reactivity(MIR) index as the characteristic of source reactivity(SR). Then, we applied the data normalization method to respectively convert EA and SR to normalized EA(NEA) and normalized SR(NSR) for various sources in the BTH region.Finally, the control index(CI) was calculated, and these sources were further classified into four grades based on the normalized CI(NCI). The study results showed that in the BTH region,furniture coating, automobile coating, and road vehicles are characterized by high NCI and need to be given more attention; however, the petro-chemical industry, which was designated as an important control source by air quality managers, has a lower NCI.Guohao Li Wei Wei Xia Shao Lei Nie Hailin Wang Xiao Yan Rui Zhang 2018Journal of Environmental Sciences2018,30,5:32
6Effect of epidural analgesia with 0.075% ropivacaine versus 0.1% ropivacaine on the maternal temperature during labor: a randomized controlled study显示文摘YUE Hong-li SHAO Liu-jiazi LI Jin WANG Ya-nan WANG Lei HAN Ru-quan 2013Chinese Medical Journal2013,,22:27
7Chinese Trauma Surgeon Association for management guidelines of vacuum sealing drainage application in abdominal surgeries-Update and systematic review显示文摘Vacuum sealing drainage (VSD) is frequently used in abdominal surgeries. However, relevant guidelines are rare. Chin ese Trauma Surge on Associati on orga nized a committee composed of 28 experts across China in July 2017, aiming to provide an evidence-based recommendation for the application of VSD in abdominal surgeries.Eleven questions regarding the use of VSD in abdominal surgeries were addressed:(1) which type of materials should be respectively chosen for the intraperitoneal cavity, retroperitoneal cavity and superficial incisions?(2) Can VSD be preventively used for a high-risk abdominal incision w让h primary suture?(3) Can VSD be used in severely contaminated/infected abdominal surgical sites?(4) Can VSD be used for temporary abdominal cavity closure under some special conditions such as severe abdominal trauma, infection, liver transplantation and intra-abdominal volume increment in abdominal compartment syndrome?(5) Can VSD be used in abdominal organ inflammation, injury, or postoperative drainage?(6) Can VSD be used in the treatment of intestinal fistula and pancreatic fistula?(7) Can VSD be used in the treatment of intra-abdominal and extra-peritoneal abscess?(8) Can VSD be used in the treatment of abdominal wall wounds, wound cavity, and defects?(9) Does VSD in crease the risk of bleeding?(10) Does VSD increase the risk of intestinal wail injury?(11) Does VSD increase the risk of peritoneal adhesion? Focusing on these questions, evidence-based recommendations were given accordingly. VSD was strongly recommended regarding the questions 2-4. Weak recommendations were made regarding questions 1 and 5-11. Proper use of VSD in abdominal surgeries can lower the risk of infection in abdominal incisions with primary suture, treat severely contaminated/infected surgical sites and facilitate temporary abdominal cavity closure.Yang Li Pei-Yuan Li Shi-Jing Sun Yuan-Zhang Yao Zhan-Fei Li Tao Liu Fan Yang Lian-Yang Zhang Xiang-Jun Bai Jing-Shan Huo Wu-Bing He Jun Ouyang Lei Peng Ping Hu Yan-An Zhu Ping Jin Qi-Feng Shao Yan-Feng Wang Rui-Wu Dai Pei-Yang Hu Hai-Ming Chen Ge-Fei Wang Yong-Gao Wang Hong-Xu Jin Chang-Ju Zhu Qi-Yong Zhang Biao Shao Xi-Guang Sang Chang-Lin Yin 2019Chinese Journal of Traumatology2019,22,1:26
8Effects of molasses on the fermentation characteristics of mixed silage prepared with rice straw, local vegetable by-products and alfalfa in Southeast China显示文摘This experiment was conducted to study the effect of molasses on the fermentation characteristics of mixed silage ensiled rice straw and vegetable by-products with alfalfa.Mixture(202 g kg^(–1) dry matter(DM))consisting of rice straw,broccoli residue and alfalfa at the ratio of 5:4:1 was ensiled with three experimental treatments:(1)no additives(control);(2)molasses at 2.5%(M1);(3)molasses at 5%(M2)on a fresh matter basis of mixture,respectively.All treatments were packed into laboratory-scale silos,and three silos per treatment were sampled on days 1,3,5,14 and 30.The result showed that the p H value of all mixed silages decreased gradually with the time of ensiling except for the control silage,in which a significant increase(P<0.05)on day 30 occurred.The lactic acid content increased gradually with the time of ensiling and reached the highest value on day 14,and a marked decrease(P<0.05)was found in the control silage on day 30.The changes of acetic acid content showed similar pattern with lactic acid content.A trace amount of propionic and butyric acid contents were found in the three mixed silages during the fermentation period.Comparing to the control,M1 and M2 treatments improved the fermentation quality of mixed silages as indicated by higher(P<0.05)lactic acid contents and lower(P<0.05)p H and ammonia-N contents.The Flieg points also showed that M1 and M2 silages were well preserved,whereas the control silage had a bad quality.Overall,the findings of this study suggested that adding molasses could improve fermentation quality of mixed silage,and M1 was more suitable for practical application.WANG Jian CHEN Lei YUAN Xian-jun GUO Gang LI Jun-feng BAI Yun-feng SHAO Tao 2017Journal of Integrative Agriculture2017,16,3:24
9Landscape of emerging and re-emerging infectious diseases in China: impact of ecology, climate, and behavior显示文摘为过去的几十年,在中国的传染疾病侧面在社会、经济的方面,环境,食物的质量,水,住房,和公共健康基础结构与快速的开发一直在变。尤其是, 5 应具报的传染疾病几乎被根除了,并且 18 另外的应具报的传染疾病的发生显著地被减少了。出人意料地,包括 HIV,普鲁斯病,梅毒,和登革热发烧,超过 10 应具报的传染疾病的发生一直在增加。不过,经常的传染疾病爆发 / 事件每年几乎被报导了,并且进口了传染疾病自从 2015,增加了。已知的病原体的新病原体和超过 100 新遗传型或 serotypes 被识别了。一些传染疾病似乎被各种各样的因素加重,包括快速的都市化,大量候鸟工人,在气候的变化,生态学,和政策,例如把农田还给森林。这评论在设法出现和 re-emerging 从中国总结当前的经验和课传染疾病,特别生态学的效果,气候,和行为,它应该在帮助另外的国家控制并且阻止传染疾病有优点。Qiyong Liu Wenbo Xu Shan Lu Jiafu Jiang Jieping Zhou Zhujun Shao Xiaobo Liu Lei Xu Yanwen Xiong Han Zheng Sun Jin Hai Jiang Wuchun Cao Jianguo Xu 2018Frontiers of Medicine2018,12,1:23
10Application of 3D reconstruction for surgical treatment of hepatic alveolar echinococcosis显示文摘AIM: To evaluate the reliability and accuracy of threedimensional(3D) reconstruction for liver resection in patients with hepatic alveolar echinococcosis(HAE).METHODS: One-hundred and six consecutive patients with HAE underwent hepatectomy at our hospital between May 2011 and January 2015. Fifty-nine patients underwent preoperative 3D reconstruction and 'virtual' 3D liver resection before surgery(Group A). Another 47 patients used conventional imaging methods for preoperative assessment(Group B). Outcomes of hepatectomy were compared between the two groups.RESULTS: There was no significant difference in preoperative data between the two groups. Compared with patients in Group B, those in Group A had a significantly shorter operation time(227.1 ± 51.4 vs 304.6 ± 88.1 min; P < 0.05), less intraoperative blood loss(308.1 ± 135.4 vs 458.1 ± 175.4 m L; P < 0.05), and lower requirement for intraoperative blood transfusion(186.4 ± 169.6 vs 289.4 ± 199.2 m L; P < 0.05). Estimated resection liver volumes in bothgroups had good correlation with actual graft weight(Group A: r = 0.978; Group B: r = 0.960). There was a significant higher serum level of albumin in Group A(26.3 ± 5.9 vs 22.6 ± 4.3 g/L, P < 0.05). Other postoperative laboratory parameters(serum levels of aminotransferase and bilirubin; prothrombin time) and duration of postoperative hospital stay were similar. Sixteen complications occurred in Group A and 19 in Group B. All patients were followed for 3-46(mean, 17.3) mo. There was no recurrence of lesions in Group A, but two recurrences in Group B. There were three deaths: two from cerebrovascular accident, and one from car accident.CONCLUSION: 3D reconstruction provides comprehensive and precise anatomical information for the liver. It also improves the chance of success and reduces the risk of hepatectomy in HAE.Yi-Biao He Lei Bai Tuerganaili Aji Yi Jiang Jin-Ming Zhao Jin-Hui Zhang Ying-Mei Shao Wen-Ya Liu Hao Wen 2015World Journal of Gastroenterology2015,21,35:16
11Parthenolide protects human lens epithelial cells from oxidative stress-induced apoptosis via inhibition of activation of caspase-3 and caspase-9显示文摘透镜的 apoptosis 上皮的房间作为奔流形成的普通基础被建议了,与是的氧化应力主要原因。这研究被执行对人的透镜的导致 oxidativestress 的 apoptosis 调查草药的成分 parthenolide 的保护的效果上皮(HLE ) 房间和可能的分子的机制包含了。HLE 房间(SRA01-04 ) 在 parthenolide (10, 20 和 50 microM ) 的不同剂量的缺席或存在与 50 microM H (2 ) O (2 ) 被孵化。到学习 apoptosis,房间被词法检查和 Annexin V-propidium 碘化物估计两倍染色的流动 cytometry;调查内在的分子的机制, caspase-3 和 caspase-9 的表示旁边是 assayed 西方的污点和量的 RT-PCR,和 caspase-3 和 caspase-9 的活动我们由 Chemicon caspase 的 remeasured 比色的活动试金工具包。为 18 h 与 H (2 ) O (2 ) 刺激了,, HLE 房间的高部分面对不同集中的 parthenolide 经历了 apoptosis, HLE 房间 apoptosis 堵住的剂量依赖者被观察。H (2 ) O (2 ) 在 HLE 房间导致的表示 ofcaspase-3 和 caspase-9 被 parthenolideboth 显著地在蛋白质和信使 rna 层次减少,并且 caspase-3 和 caspase-9 的激活被 parthenolide 也以一种剂量依赖者方式压制。在结论, parthenolide 通过 caspase-3 andcaspase-9 的激活的抑制阻止 HLEcells 氧化导致压力的 apoptosis,建议对奔流形成的潜在的保护的效果。Hangping Yao Xiajing Tang Xueting Shao Lei Feng Nanping Wu Ke Yao 2007Cell Research2007,17,6:16
12Potential role of strike-slip faults in opening up the South China Sea显示文摘Radiometric dates of key rock units indicate that a remnant Late Mesozoic ocean of the Huatung Basin is still preserved today east of the South China Sea(SCS).We integrate regional geology with a Cretaceous oceanic basement in the vicinity of the Huatung Basin to reconstruct the Huatung Plate east of the Eurasian continent.Results of geophysical investigations,four expeditions of deep-sea drilling and a renaissance of regional geology allow us to propose a hypothesis that the mechanism responsible for the SCS opening was raised from strike-slip fault on the east.The hypothesis suggests that the SCS opening could highly relate to the strike-slip faults inherited from Late Mesozoic structures onshore–offshore the SE Cathaysia Block to develop rhombic-shaped extensional basins en echelon on the thinned Eurasian continental crust in the Early Cenozoic.It was followed by sinistral strike-slip movements along the boundary between the Eurasian Plate and the Huatung Plate driven by oblique subduction of the Huatung Plate to the northwest coupled with slab-pull force by southward subduction of the Proto-SCS to open up the triangle-shaped oceanic East Sub-basin in the Early Oligocene(33/34 Ma).The spreading ridge then propagated southwestward in the step-over segment between the Zhongnan-Lile and the Red River strike-slip fault systems to open the triangle-shaped oceanic Southwest Sub-basin by 23 Ma.The plate boundary fault was subsequently converted into the Manila Trench when the Eocene Sierra Madre arc of the Huatung Plate had moved from the south to its present latitude by the Middle Miocene.Chi-Yue Huang Pinxian Wang Mengming Yu Chen-Feng You Char-Shine Liu Xixi Zhao Lei Shao Guangfa Zhong Graciano P.Yumul Jr 2019National Science Review2019,6,5:16
13Combined Influence of Insulin Resistance and Inflammatory Biomarkers on Type 2 Diabetes:A Population-based Prospective Cohort Study of Inner Mongolians in China显示文摘This prospective study was designed to examine the combined influence of insulin resistance(IR)and inflammatory biomarker levels on type 2 diabetes mellitus(T2DM)among 1,903Inner Mongolians.During follow-up,205(10.77%)participants developed T2DM,and the incidenceQIU Qiao Yan ZHANG Bei Lei ZHANG Ming Zhi WU Jia Hui ZHOU Jing Wen LIANG Zhu ZHANG Yong Hong ZHANG Shao Yan 2018Biomedical and Environmental Sciences2018,31,4:15
14Progress of the key materials for organic solar cells显示文摘Organic solar cells have attracted academic and industrial interests due to the advantages like lightweight,flexibility and roll-to-roll fabrication.Nowadays,18%power conversion efficiency has been achieved in the state-of-the-art organic solar cells.The recent rapid progress in organic solar cells relies on the continuously emerging new materials and device fabrication technologies,and the deep understanding on film morphology,molecular packing and device physics.Donor and acceptor materials are the key materials for organic solar cells since they determine the device performance.The past 25 years have witnessed an odyssey in developing high-performance donors and acceptors.In this review,we focus on those star materials and milestone work,and introduce the molecular structure evolution of key materials.These key materials include homopolymer donors,D-A copolymer donors,A-D-A small molecular donors,fullerene acceptors and nonfullerene acceptors.At last,we outlook the challenges and very important directions in key materials development.Yang Tong Zuo Xiao Xiaoyan Du Chuantian Zuo Yuelong Li Menglan Lv Yongbo Yuan Chenyi Yi Feng Hao Yong Hua Ting Lei Qianqian Lin Kuan Sun Dewei Zhao Chunhui Duan Xiangfeng Shao Wei Li Hin-Lap Yip Zhengguo Xiaol Bin Zhang Qingzhen Bian Yuanhang Cheng Shengjian Liu Ming Cheng Zhiwen Jin Shangfeng Yang Liming Ding 2020Science China Chemistry2020,63,6:15
15Effect of lactic acid bacteria and propionic acid on conservation characteristics,aerobic stability and in vitro gas production kinetics and digestibility of whole-crop corn based total mixed ration silage显示文摘This study was conducted to evaluate the effect of lactic acid bacteria and propionic acid on the fermentation quality, aerobic stability and in vitro gas production kinetics and digestibility of whole-crop corn based total mixed ration(TMR) silage. Total mixed ration was ensiled with four treatments:(1) no additives(control);(2) an inoculant(Lactobacillus plantarum)(L);(3) propionic acid(P);(4) propionic acid+lactic acid bacteria(PL). All treatments were ensiled in laboratory-scale silos for 45 days, and then subjected to an aerobic stability test for 12 days. Further, four TMR silages were incubated in vitro with buffered rumen fluid to study in vitro gas production kinetics and digestibility. The results indicated that all TMR silages had good fermentation characteristics with low pH(<3.80) and ammonia nitrogen(NH_3-N) contents, and high lactic acid contents as well as Flieg points. Addition of L further improved TMR silage quality with more lactic acid production. Addition of P and PL decreased lactic acid and NH_3-N contents of TMR silage compared to the control(P<0.05). After 12 days aerobic exposure, P and PL silages remained stable, but L and the control silages deteriorated as indicated by a reduction in lactic acid and an increase in pH, and numbers of yeast. Compared to the control, addition of L had no effects on TMR silage in terms of 72 h cumulative gas production, in vitro dry matter digestibility, metabolizable energy, net energy for lactation and short chain fatty acids, whereas addition of PL significantly(P<0.05) increased them. L silage had higher(P<0.05) in vitro neutral detergent fiber digestibility than the control silage. The results of our study suggested that TMR silage prepared with whole-crop corn can be well preserved with or without additives. Furthermore, the findings of this study suggested that propionic acid is compatible with lactic acid bacteria inoculants, and when used together, although they reduced lactic acid production of TMR silage, they improved aerobic stability and in vitro nutrients digestibility of TMR silage.CHEN Lei YUAN Xian-jun LI Jun-feng WANG Si-ran DONG Zhi-hao SHAO Tao 2017Journal of Integrative Agriculture2017,16,7:14
16Forest fire risk zone mapping from satellite images and GIS for Baihe Forestry Bureau, Jilin, China显示文摘森林火能不管它是否被自然力量或人的活动引起是真实生态的灾难,印射森林火风险地区最小化火的频率是可能的,避免损坏,等等。集成遥感和 CIS 的一个方法被发展并且适用于森林火风险地区在这篇论文为 Baihe 林地局印射。卫星图象被解释并且分类产生植被类型层和土地利用层(道路,解决和农田) 。地志的层(斜坡,方面和高度) 从 DEM 被导出。题目、地志的信息被使用弧 / 信息 GISsoftware 分析。福雷斯特火风险地区被根据他们的敏感把主观重量分到所有层(来自道路,农田和解决的植被类型,斜坡,方面,高度和距离) 的班到火或他们的导致火的能力描出。森林火风险从的 Fivecategories 对很高很低自动地被导出。学习区域的 Themapping 结果被发现在对实际 fire-affectedsites 的强壮的同意。XU Dong DAI Li-min SHAO Guo-fan TANG Lei WANG Hui 2005Journal of Forestry Research2005,16,3:14
17Comparison of two supplemental oxygen methods during gastroscopy with propofol mono-sedation in patients with a normal body mass index显示文摘BACKGROUND Hypoxemia due to respiratory depression and airway obstruction during upper gastrointestinal endoscopy with sedation is a common concern.The Wei nasal jet tube(WNJT)is a new nasopharyngeal airway with the ability to provide supraglottic jet ventilation and oxygen insufflation via its built-in wall channel.The available evidence indicates that with a low oxygen flow,compared with nasal cannula,the WNJT does not decrease the occurrence of hypoxemia during upper gastrointestinal endoscopy with propofol sedation.To date,there has been no study assessing the performance of WNJT for supplemental oxygen during upper gastrointestinal endoscopy with sedation when a moderate oxygen flow is used.AIM To determine whether the WNJT performs better than the nasal prongs for the prevention of hypoxemia during gastroscopy with propofol mono-sedation when a moderate oxygen flow is provided in patients with a normal body mass index.METHODS This study was performed in 291 patients undergoing elective gastroscopy with propofol mono-sedation.Patients were randomized into one of two groups to receive either the WNJT(WNJT group,n=147)or the nasal cannula(nasal cannula group,n=144)for supplemental oxygen at a 5-L/min flow during gastroscopy.The lowest SpO2 during gastroscopy was recorded.The primary endpoint was the incidence of hypoxemia or severe hypoxemia during gastroscopy.RESULTS The total incidence of hypoxemia and severe hypoxemia during gastroscopy was significantly decreased in the WNJT group compared with the nasal cannula group(P=0.000).The lowest median SpO2 during gastroscopy was significantly higher(98%;interquartile range,97-99)in the WNJT group than in the nasal cannula group(96%;interquartile range,93-98).Epistaxis by device insertion in the WNJT group occurred in 7 patients but stopped naturally without any treatment.The two groups were comparable in terms of the satisfaction of physicians,anesthetists and patients.CONCLUSION With a moderate oxygen flow,the WNJT is more effective for the prevention of hypoxemia during gastroscopy with propofol mono-sedation compared with nasal prongs,but causing slight epistaxis in a few patients.Liu-Jia-Zi Shao Yi Zou Fu-Kun Liu Lei Wan Shao-Hua Liu Fang-Xiao Hong Fu-Shan Xue 2020World Journal of Gastroenterology2020,26,43:13
18Broadband tunable liquid crystal terahertz waveplates driven with porous graphene electrodes显示文摘Versatile devices,especially tunable ones,for terahertz imaging,sensing and high-speed communication,are in high demand.Liquid crystal based components are perfect candidates in the optical range;however,they encounter significant challenges in the terahertz band,particularly the lack of highly transparent electrodes and the drawbacks induced by a thick cell.Here,a strategy to overcome all these challenges is proposed:Few-layer porous graphene is employed as an electrode with a transmittance of more than 98%.A subwavelength metal wire grid is utilized as an integrated high-efficiency electrode and polarizer.The homogeneous alignment of a high-birefringence liquid crystal is implemented on both frail electrodes via a non-contact photo-alignment technique.A tunable terahertz waveplate is thus obtained.Its polarization evolution is directly demonstrated.Furthermore,quarter-wave plates that are electrically controllable over the entire testing range are achieved by stacking two cells.The proposed solution may pave a simple and bright road toward the development of various liquid crystal terahertz apparatuses.Lei Wang Xiao-Wen Lin Wei Hu Guang-Hao Shao Peng Chen Lan-Ju Liang Biao-Bing Jin Pei-Heng Wu Hao Qian Yi-Nong Lu Xiao Liang Zhi-Gang Zheng Yan-Qing Lu 2015Light(Science & Applications)2015,4,1:13
19Antiinflammatory and immunoregulatory effects of total glucosides of Yupingfeng powder显示文摘背景 Yupingfeng,一张繁体中文建筑群药方,为与象过敏鼻炎和长期的支气管炎那样的免疫不全有关的煽动性的疾病的痊愈和预防在中国有效地被使用了。然而,这张药方的活跃部件仍然保持不清楚。现在的学习集中了于从 Yupingfeng 调查 glucosidic 摘录的 antiinflammatory 和 immunoregulatory 效果。我们为耳朵胀大测试了动物模型的方法在老鼠由 dimethylbenzene 导致了;手掌胀大由棉花小团在老鼠导致的 carregeenin 和 granuloma 导致了;在 immunosuppressed 老鼠的怒气的 haemolysin,由脾的房间的抗体产生,推迟的超敏性和 T 房间子集的水平。显著地禁止的老鼠胀大的耳朵由 dimethylbenzene 导致了的 24 mg/kg, 48 mg/kg 和 96 mg/kg 的结果 Glucosidic 摘录。同样,禁止的老鼠胀大的手掌由 carregeenin 和 grenuloma 导致了的 16 mg/kg, 32 mg/kg 和 64 mg/kg 的 glucosidic 摘录由棉花小团导致了。24 mg/kg, 48 mg/kg 和 96 mg/kg 的 Glucosidic 摘录由 cyclophosphamide 在老鼠 immunosuppressed 在 splenocytes 在 haemolysin 的浆液和水平改进了 IgM 水平。在 cyclophosphamide 压制的老鼠的推迟的超敏性被 24 mg/kg, 48 mg/kg 和 96 mg/kg 的 glucosidic 摘录提高。这些结果建议 Yupingfeng 能与免疫力的抑制在老鼠恢复体液、细胞的有免疫力的功能。48 mg/kg 和 96 mg/kg 的 Glucosidic 摘录显著地抵抗了胀大的抑制免疫力的老鼠耳朵并且在将近正常的水平维持了它。glucosidic 的提高的、推迟的超敏性行动提取,由 cyclophosphamide 压制了,可能被导致 TH 房间并且调整 T 淋巴细胞引起子集。从 Yupingfeng 的 glucosidic 摘录有 antiinflammatory 和 immunoregulation 行动的结论,建议这些配糖物是繁体中文药方 Yupingfeng 的主要活跃部件。GAO Jian LI Jun SHAO Xu JIN Yong LV Xiong-wen GE Jin-fang HUANG Yan ZHANG Lei CHEN Lin 2009Chinese Medical Journal2009,,14:12
20Altered intrinsic functional connectivity of the primary visual cortex in youth patients with comitant exotropia: a resting state fMRI study显示文摘AIM: To evaluate the differences in the functional connectivity(FC) of the primary visual cortex(V1) between the youth comitant exotropia(CE) patients and health subjects using resting functional magnetic resonance imaging(f MRI) data.METHODS: Totally, 32 CEs(25 males and 7 females) and 32 healthy control subjects(HCs)(25 males and 7 females) were enrolled in the study and underwent the MRI scanning. Two-sample t-test was used to examine differences in FC maps between the CE patients and HCs. RESULTS: The CE patients showed significantly less FC between the left brodmann area(BA17) and left lingual gyrus/cerebellum posterior lobe, right middle occipital gyrus, left precentral gyrus/postcentral gyrus and right inferior parietal lobule/postcentral gyrus. Meanwhile, CE patients showed significantly less FC between right BA17 and right middle occipital gyrus(BA19, 37).CONCLUSION: Our findings show that CE involves abnormal FC in primary visual cortex in many regions, which may underlie the pathologic mechanism of impaired fusion and stereoscopic vision in CEs.Pei-Wen Zhu Xin Huang Lei Ye Nan Jiang Yu-Lin Zhong Qing Yuan Fu-Qing Zhou Yi Shao 2018International Journal of Ophthalmology(English edition)2018,11,4:11
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