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Location-based instant satellite image service: concept and system design

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International Journal of Digital Earth 2015年第2期8卷 91-101页

作者： Jianbo liu Jin Yang fu Chen Qin Dai jing Zhang Institute of Remote Sensing and Digital Earth Chinese Academy of SciencesBeijingChina

This paper presents various limitations of the current remote sensing data distribution models and proposes a new concept called the location-based instant satellite image service for a new generation of remote sensing image distribution *** essential feature of the service is that customers can subscribe to data based on the location of interest and satellite image data received by antenna will be distributed to customer’s terminal devices instantly after imaging over the subscribed *** workflow,architecture,and key technologies of the new generation data distribution system are *** system is composed of four parts:data comprehensive processing component,data management component,product distribution component,and data display *** on this,a prototype system is developed,which demonstrates the promising service model with great potential for increased usage in many applications.

关键词： remote sensing data distribution model location-based service instant service

Soil Geochemistry Changes Induced by a Foreign Soil Reconstruction Project in Three Gorges Reservoir Region of China

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Journal of Mountain Science 2015年第6期12卷 1511-1520页

作者： liu Juan WEI Chao-fu LUO You-Jin DU jing College of Resources and Environment Southwest University Chongqing Academy of Agricultural Sciences

Fertile topsoil was added onto the surface of barren slope land in Three Gorges Reservoir region of China in an anthropogenic process known as the foreign soil reconstruction project. The main goal of this paper was to reveal the influence of anthropogenic activities on pedogenic processes and soil classifications. Chemical weathering indices and comparative analysis were applied to discuss changes in geochemical compositions and weathering features of purplish soils(Cambisols) before and after the project. Results showed that:(1) The foreign soil reconstruction project slightly altered the major element composition of topsoil and improved the soil structure. Although the distributions of major elements in the original topsoil, original subsoil, foreign topsoil and newly constructed topsoil were all similar to that in upper continental crust, newly constructed topsoil was the most similar soil.(2) The chemical index of alteration was more sensitive than the weathering index of Parker at indicating chemical weathering status of purplish soil. The chemical weathering status of newly constructed topsoil was higher than that of the original topsoil and lower than that of foreign topsoil.(3) Anthropogenic activities may provide a promising new thought for the anthropogenic soil classification system. The scope and subgroups of Anthrosols should be extended and strengthened. Or there may be a need to combine Anthrosols and Technosols orders to create a new soil order. The results may be used for optimizing soil mellowing engineering activities and enriching the soil classification system.

关键词： Anthropogenic activities Weathering status Foreign soil reconstruction project Pedogenic processes Three Gorges Reservoir region China

Novel ABCB4 mutations in an infertile female with progressive familial intrahepatic cholestasis type 3:A case report

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World Journal of Clinical Cases 2022年第6期10卷 1998-2006页

作者： Tian-fu liu jing-jing He Liang Wang Ling-Yi Zhang Department of Hepatology Lanzhou University Second HospitalLanzhou 730030Gansu ProvinceChina

BACKGROUND Mutations that occur in the ABCB4 gene,which encodes multidrug-resistant protein 3,underlie the occurrence of progressive familial intrahepatic cholestasis type 3(PFIC3).Clinical signs of intrahepatic cholestasis due to gene mutations typically first appear during infancy or *** of PFIC3 occurring in adults are *** SUMMARY This is a case study of a 32-year-old infertile female Chinese patient with a 15-year history of recurrent abnormal liver *** primary clinical signs were elevated levels of alkaline phosphatase andγ-glutamyl *** possible reasons for liver dysfunction were eliminated in this patient,resulting in a diagnosis of *** diagnosis was confirmed using gene detection and histological *** using genetic sequencing analysis indicated the presence of two novel heterozygous mutations in the ABCB4 gene,namely,a 2950C>T;p.A984V mutation(exon 24)and a 667A>G;p.I223V mutation(exon 7).After receiving ursodeoxycholic acid(UDCA)treatment,the patient's liver function indices improved,and she successfully became pregnant by in vitro ***,the patient developed intrahepatic cholestasis of pregnancy in the first ***,treatment with UDCA was safe and *** These novel ABCB4 heterozygous mutations have a variety of clinical *** follow-up is essential for a comprehensive understanding of PFIC3.

关键词： Progressive familial intrahepatic cholestasis type 3 ABCB4 gene Infertility Intrahepatic cholestasis of pregnancy Case report

Ablative Property of C/C–SiC–HfC Composites Prepared via Precursor Infiltration and Pyrolysis under 3,000 °C Oxyacetylene Torch

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Acta Metallurgica Sinica(English Letters) 2014年第6期27卷 981-987页

作者： Min Yan Hejun Li Qiangang fu jing Xie Lei liu Bo Feng C/C Composites Technology Research Center State Key Laboratory of Solidification Processing Northwestern Polytechnical University

C/C–SiC–HfC composites were fabricated via precursor infiltration and pyrolysis using a mixture solution of organic hafnium-containing polymer and polycarbosilane as precursor. The microstructures and the phases of the composites were analyzed by scanning electron microscopy and X-ray diffraction. The ablation resistance of the composites was evaluated under 3,000 °C oxyacetylene torch. After ablation for 120 s, the composites exhibit good ablation properties with the linear and mass ablation rates of 9.1 9 10-4mm/s and 1.30 9 10-3g/s, which are far lower than those of the C/C–SiC composites. The excellent ablative property of the C/C–SiC–HfC composites is resulted from the formation of HfO2 molten layer on the surface of the composites, which could play a positive role in reducing heat transfer and preventing oxygen transport to the underlying carbon substrate.

关键词： C/C–SiC–HfC composite Ablation performance Thermal behavior

高技术产品出口、数字贸易壁垒与“双环流”价值链分工地位

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经济问题 2025年第1期 37-47页

作者：周国富湛婧宁熊宇航天津财经大学统计学院天津300222

随着《区域全面经济伙伴关系协定》(RCEP)的全面生效,中国将同时置身于全球价值链大环流和RCEP价值链小环流贸易网络中。在理论分析的基础上,采用社会网络分析与跨国面板数据模型相结合的方法,基于2007—2023年全球52个国家的高技术产... 详细信息

随着《区域全面经济伙伴关系协定》(RCEP)的全面生效,中国将同时置身于全球价值链大环流和RCEP价值链小环流贸易网络中。在理论分析的基础上,采用社会网络分析与跨国面板数据模型相结合的方法,基于2007—2023年全球52个国家的高技术产品出口数据测算了全球高技术产品贸易网络和RCEP高技术产品贸易网络的结构指标,并考察其对“双环流”价值链分工地位的影响及作用机制。结果显示:(1)在高技术产品贸易网络中,中国已成为链接全球大环流与RCEP小环流的枢纽国家;(2)相对于全球大环流,RCEP小环流的高技术产品贸易网络更有利于中国摆脱“被俘获”式发展和国际分工地位的跃升;(3)一国在高技术产品贸易网络中的广度和深度对其在全球大环流和RCEP小环流价值链中分工地位的提升具有显著促进作用;(4)相对于全球大环流,RCEP小环流高技术产品贸易网络对价值链分工地位的促进作用受到数字贸易壁垒的负面影响更显著。基于上述结论,从中国如何充分利用RCEP的全面生效和新的“双环流”带来的机遇与挑战,以及促进高技术产业发展和提升价值链分工地位等方面给出了对策建议。

关键词：高技术产品出口 “双环流”价值链分工地位数字贸易壁垒

Tuning the crystalline and electronic structure of ZrO_(2)via oxygen vacancies and nano-structuring for polysulfides conversion in lithium-sulfur batteries

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Journal of Energy Chemistry 2024年第1期88卷 82-93,I0003页

作者： Shengnan fu Chaowei Hu jing Li Hongtao Cui Yuanyuan liu Kaihua liu Yanzhao Yang Meiri Wang Shandong Key Laboratory for Chemical Engineering and Processing School of Chemistry&Chemical EngineeringYantai UniversityYantai 264000ShandongChina Key Laboratory for Special functional Aggregate Materials of Education Ministry School of Chemistry and Chemical EngineeringShandong UniversityJinan 250100ShandongChina

The recent emergence of tetragonal phases zirconium dioxide(ZrO_(2))with vacancies has generated significant interest as a highly efficient and stable electrocatalyst with potential applications in trapping polysulfides and facilitating rapid conversion in lithium-sulfur batteries(LSBs).However,the reduction of ZrO_(2)is challenging,even under strong reducing atmospheres at high temperatures and ***,the limited presence of oxygen vacancies results in insufficient active sites and reaction interfaces,thereby hindering practical ***,we successfully introduced abundant oxygen vacancies into ZrO_(2)at the nanoscale with the help of carbon nanotubes(CNTs-OH)through hydrogen-etching at lower temperatures and *** introduced oxygen vacancies on ZrO_(2-x)/CNTs-OH can effectively rearrange charge distribution,enhance sulfiphilicity and increase active sites,contributing to high ionic and electronic transfer kinetics,strong binding energy and low redox barriers between polysulfides and ZrO_(2-x).These findings have been experimentally validated and supported by theory *** a result,LSBs assembled with the ZrO_(2-x)/CNTs-OH modified separators demonstrate excellent rate performance,superior cycling stability,and ultra-high sulfur ***,at high sulfur loading of 6 mg cm^(-2),the area capacity is still up to 6.3 mA h cm^(-2).This work provides valuable insights into the structural and functional optimization of electrocatalysts for batteries.

关键词： Lithium-sulfur batteries Oxygen vacancies Zirconium dioxide/carbon nanotubes with–OH Improved redox kinetics Superior cycling stability

Selective G6PDH inactivation for Helicobacter pylori eradication with transformed polysulfide

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Science China Life Sciences 2025年

作者： Xiaonan Wang Ning Zhou Xuejiao J.Gao Zijing Zhu Minmin Sun Qian Wang Haolin Cao Xuetong Wu Caiyu Zhou Qingkang Zheng Ye Yuan Yuan liu Lei Chen jing Jiang Pengcheng Bu Lizeng Gao CAS Engineering Laboratory for Nanozyme Key Laboratory of Biomacromolecules Institute of Biophysics Chinese Academy of Sciences School of Life Sciences University of Chinese Academy of Sciences College of Chemistry and Chemical Engineering Jiangxi Normal University Key Laboratory of Epigenetic Regulation and Intervention Institute of Biophysics Chinese Academy of Sciences Nanozyme Laboratory in Zhongyuan School of Basic Medical Sciences Zhengzhou University Nanozyme Laboratory in Zhongyuan Henan Academy of Innovations in Medical Science

Alternative treatment for the highly prevalent Helicobacter pylori infection is imperative due to rising antibiotic resistance. We unexpectedly discovered that the anti-H. pylori component in garlic is hydrogen polysulfide（H2S_n, n≥2）, not organic polysulfides. Studies on the mechanism of action（MoA） show that H2S_nspecifically inactivates H. pylori glucose-6-phosphate dehydrogenase（G6PDH） by interfering with electron transfer from glucose-6-phosphate（G6P） to nicotinamide adenine dinucleotide phosphate（NADP+）. However, low H2S_nyield makes garlic derivatives hard to be a reliable donor of H2S_nto treat H. pylori infection. To address this challenge, we established a polysulfide transformation process from garlic organosulfur compounds into Fe3S4that generates H2S_nwith a 25–58 times increase in *** chitosan encapsulation, we designed a gastric-adaptive H2S_nmicroreactor（GAPSR） that eradicates H. pylori with 250 times higher efficiency under gastric conditions. A single GAPSR achieves more rapid H. pylori eradication than combined antibiotics therapy without disturbing the gut microbiota. These findings indicate a distinct MoA transformation mediated by polysulfide as an alternative candidate to treat H. pylori infection.

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Numerical simulation of PAHs sorption/desorption on soil with the influence of Tween80

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Journal of Environmental Sciences 2006年第4期18卷 716-720页

作者： CHEN jing WANG Xue-jun HUJun-dong XU fu-liu TAO Shu College of Environmental Science MOE Laboratory of Earth Surface Process Peking University Beijing 100871 China

In this paper, the influences of inionic surfactant Tween80 on polycyclic aromatic hydrocarbons （PAHs） sorption/desorption on artificially contaminated soil were studied, and γ model was applied to simulate the influences. Results showed that, with the use of Tween 80, the sorption behaviors of PAHs on soil altered significantly. Adsorbed Tween 80 increased the sorption amount of PAHs while the dissolved Tween80 increased the apparent solubility of PAHs. These two processes exert influences on the sorption coefficient of PAHs in soil-water system, which can be depicted by apparent sorption coefficient. The partition coefficients （the soil/water partition coefficient of PAHs and surfactants obtained fxom sorption experiments） and statistical parameters used in the amended γ model were obtained in independent experiments. With these parameters, the γ model could provide a satisfactory independent prediction of PAHs release from soil to aqueous phase at two surfactant concentrations.

关键词： Tween80 PAHs soil sorption/desorption γ model

Investigating Genotype 1a HCV Drug Resistance in NS5A Region via Bayesian Inference

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Tsinghua Science and Technology 2015年第5期20卷 484-490页

作者： Yao fu Gang Chen Lizhi fu jing Zhang bioinformatics scientist in Bina Technologies Roche Redwood City CA 94065 USA the financial service industry Department of Mathematics & Statistics Georgia State University the Department of Statistics Yale University

Hepatitis C virus（HCV） treatment is on the cutting edge of medicine. Due to the high rate of mutations and low fidelity of HCV replication, resistant strains quickly become dominant in a viral population under the selection pressure of a drug. In this paper, we examined the drug resistance mechanism in the NS5 A region of genotype1 a HCV virus by comparing the sequence data from interferon-ribavirin treated and untreated patients. To find the drug resistance difference, we used innovative Bayesian probability models to detect mutation combinations and inferred detailed interaction structures of these mutations. We aim to provide reference to drug design and mutation mechanism understanding through our work.

关键词： Bayesian model Hepatitis C virus(HCV) drug resistance NS5A