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Characteristics and origin of low-organicmatter carbonate source rocks in the Middle-Upper Ordovician, Tarim Basin, northwestern China

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Journal of Palaeogeography 2024年第3期13卷 594-619页

作者： Jun-Qing Chen Fu-Jie Jiang Xiong-Qi Pang Hai-Jun Yang Kan-Yuan Shi Bo Pang Hong Pang Jian-fa Chen Zhuo-Heng Chen Xin-Gang Zhang Song wu State Key Laboratory of Petroleum Resources and Engineering China University of Petroleum(Beijing)Beijing 102249China Basic Research Center for Energy Interdisciplinary College of ScienceChina University of Petroleum(Beijing)Beijing 102249China Beijing Key Laboratory of Optical Detection Technology for Oil and Gas China University of Petroleum(Beijing)Beijing 102249China College of Geosciences China University of Petroleum(Beijing)Beijing 102249China Research Institute of Petroleum Exploration and Development PetroChina Tarim Oilfield CompanyKorla 841000Xinjiang Uygur Autonomous RegionChina Geological Survey of Canada Natural Resources CanadaCalgary T2L 2A7Canada

The continually-discovered large volumes of marine hydrocarbons indicate a huge exploration potential within the carbonate rocks of Ordovician in the Tarim Basin,northwestern *** Middle-Upper Ordovician(O2+3)carbonate source rocks are at a highly mature *** rocks presently contain a low amount of total organic carbon(TOC_(pd)≤0.5%)(TOC_(pd) means the present-day TOC).A mass balance approach is used to identify the source rocks that have expelled *** characteristics and origin of hydrocarbon expulsion from low-TOC_(pd) source rocks are studied,which are significant for oil exploration in the *** results showed that a low-TOC_(pd) O2+3 source rock having expelled hydrocarbons was type I and had a very narrow oil *** a high rock maturity and a high original TOC(TOCo)value exceeding 1%,nearly 80%of the generated hydrocarbons were *** content of gammacerane and C28 steranes in the oil and source rock extracts were relatively lean,with a V-shaped distribution of regular steranes,suggesting a possible genetic relation between the low-TOC_(pd) source rocks and the marine oil in the Tabei *** planktonic algae or acritarchs were the main hydrocarbon parent materials,distributed in the subsiding platform-slope *** matter was preserved under reducing conditions,and source rocks were formed with a favorable kerogen type and a moderate hydrocarbon generation *** study illustrates the hydrocarbon expulsion of low TOC_(pd) source rocks in northern Tarim Basin,which is greatly significant for analyzing the genesis of marine crude oil in Tarim Basin,and evaluating the distribution of marine source *** research method is theoretically significant for oil and gas exploration in the same type of highlymature carbonate paleobasins.

关键词： Carbonate source rock Mass balance approach Present-day TOC Genesis mechanism Tarim Basin

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Novel magnetic compression technique for the treatment of postoperative anastomotic stenosis in rectal cancer:A case report

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World Journal of Gastrointestinal Surgery 2024年第6期16卷 1926-1932页

作者： Miao-Miao Zhang Huan-Chen Sha Hai-Rong Xue Yuan-fa Qin Xiao-Gang Song Yun Li Yu Li Zheng-wu Deng Yu-Lin Gao fang-fang Dong Yi Lyu Xiao-Peng Yan Department of Hepatobiliary Surgery The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina Department of Shaanxi Provincial Key Laboratory of Magnetic Medicine The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'an 710061Shaanxi ProvinceChina Department of National Local Joint Engineering Research Center for Precision Surgery&Regenerative Medicine The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'an 710061Shaanxi ProvinceChina Department of Gastroenterology The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'an 710061Shaanxi ProvinceChina

BACKGROUND The treatment of postoperative anastomotic stenosis after excision of rectal cancer is *** balloon dilation and radial incision are not effective in all *** present a new endoscopy-assisted magnetic compression technique(MCT)for the treatment of rectal anastomotic *** successfully applied this MCT to a patient who developed an anastomotic stricture after radical resection of rectal cancer.A 50-year-old man had undergone laparoscopic radical rectal cancer surgery at a local hospital 5 months ago.A colonoscopy performed 2 months ago indicated that the rectal anastomosis was narrow due to which ileostomy closure could not be *** patient came to the Magnetic Surgery Clinic of the First Affiliated Hospital of Xi'an Jiaotong University after learning that we had successfully treated patients with colorectal stenosis using *** performed endoscopy-assisted magnetic compression surgery for rectal *** magnets were removed 16 d later.A follow-up colonoscopy performed after 4 months showed good anastomotic patency,following which,ileostomy closure surgery was *** MCT is a simple,non-invasive technique for the treatment of anastomotic stricture after radical resection of rectal *** technique can be widely used in clinical settings.

关键词： Rectal cancer Magnetic compression technique Magnetosurgery Anastomotic stricture Magnetic surgery clinic Case report

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Potential Provoking Effects of Environmental Pollutants on Food Allergy:An Issue That Is Gaining Increasing Attention

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China CDC weekly 2024年第24期6卷 585-588页

作者： Yiyun Zhang Lei Zhang Di wu Yongning wu School of Population Medicine and Public Health Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijingChina Department of Nutrition and Food Safety Peking Union Medical CollegeResearch Unit of Food SafetyChinese Academy of Medical SciencesBeijingChina NHC Key Lab of Food Safety Risk Assessment China National Center for Food Safety Risk AssessmentBeijingChina Institute for Global Food Security School of Biological SciencesQueen’s University Belfast19 Chlorine GardensBelfastUnited Kingdom

Allergic diseases are widespread globally,affecting over 40%of the *** allergy(fa),characterized by an abnormal immune response to harmless proteins in foods,is one of these prevalent *** estimates suggest that approximately 220 million people worldwide suffer from fa(1).In children,over one-third of parents report their children experiencing hypersensitive reactions to food,with fa affecting around 8%of this demographic.

关键词： diseases Allergy globally

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Slippery hydrogel with desiccation-tolerant‘skin’for high-precision additive manufacturing

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International Journal of Extreme Manufacturing 2024年第2期6卷 486-500页

作者： Desheng Liu Pan Jiang Yue Hu Yaozhong Lu Yixian Wang Jiayu wu Danli Hu Tao wu Xiaolong Wang State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000People’s Republic of China CAS Key Laboratory of Chemistry of Northwestern Plant Resources Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000People’s Republic of China Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai Yantai Zhongke Research Institute of Advanced Materials and Green Chemical EngineeringYantai 264006People’s Republic of China Key Laboratory of Materials-Oriented Chemical Engineering of Xinjiang Uygur Autonomous Region School of Chemistry and Chemical EngineeringShihezi UniversityShihezi 832003People’s Republic of China

Hydrogels inevitably undergo dehydration,structural collapse,and shrinkage deformation due to the uninterrupted evaporation in the atmosphere,thereby losing their flexibility,slipperiness,and manufacturing ***,we propose a novel bioinspired strategy to construct a spontaneously formed‘skin’on the slippery hydrogels by incorporating biological stress metabolites trehalose into the hydrogel network,which can generate robust hydrogen bonding interactions to restrain water *** contents of trehalose in hydrogel matrix can also regulate the desiccation-tolerance,mechanical properties,and lubricating performance of slippery hydrogels in a wide *** vat photopolymerization three-dimensional printing and trehalose-modified slippery hydrogels enables to achieve the structural hydrogels with high resolution,shape fidelity,and sophisticated architectures,instead of structural collapse and shrinkage deformation caused by *** thus,this proposed functional hydrogel adapts to manufacture large-scale hydrogels with sophisticated architectures in a long-term *** a proof-of-concept demonstration,a high-precision and sophisticated slippery hydrogel vascular phantom was easily fabricated to imitate guidewire ***,the proposed protocol is universally applicable to diverse types of hydrogel *** strategy opens up a versatile methodology to fabricate dry-resistant slippery hydrogel for functional structures and devices,expanding their high-precision processing and broad applications in the atmosphere.

关键词： slippery hydrogel trehalose desiccation tolerance vat photopolymerization 3D printing hydrogen bonding

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高铁经济效应差异性及其机制研究——来自产业结构视角的新证据

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软科学 2024年第4期38卷 30-37页

作者：李小龙吴宗法同济大学经济与管理学院上海200092

基于中国124个城市2001一2020年间的面板数据,结合双重差分与合成控制法,从城市产业结构角度探究了高铁经济效应差异性的作用机制。结果表明,高铁经济效应存在较强的产业结构差异,城市第一、第二和第三产业产值占比会显著影响高铁经济... 详细信息

基于中国124个城市2001一2020年间的面板数据,结合双重差分与合成控制法,从城市产业结构角度探究了高铁经济效应差异性的作用机制。结果表明,高铁经济效应存在较强的产业结构差异,城市第一、第二和第三产业产值占比会显著影响高铁经济效应。因此,高铁对第三产业、第二产业和第一产业占比较高的城市的正经济效应逐渐减弱。进一步从直接效应和间接效应两方面对高铁经济效应产业结构差异的作用机制进行分析后发现,高铁的间接经济效应对不同城市形成了正面或负面经济影响,是导致高铁经济效应出现产业结构差异的主要原因。

关键词：高铁经济效应效应差异性产业结构

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Global Solutions to Nonconvex Problems by Evolution of Hamilton-Jacobi PDEs

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Communications on Applied Mathematics and Computation 2024年第2期6卷 790-810页

作者： Howard Heaton Samy wu Fung Stanley Osher Typal Research Typal LLCLos AngelesUSA Department of Applied Mathematics and Statistics Colorado School of MinesGoldenUSA Department Mathematics UCLALos AngelesUSA

Computing tasks may often be posed as optimization *** objective functions for real-world scenarios are often nonconvex and/or ***-of-the-art methods for solving these problems typically only guarantee convergence to local *** work presents Hamilton-Jacobi-based Moreau adaptive descent(HJ-MAD),a zero-order algorithm with guaranteed convergence to global minima,assuming continuity of the objective *** core idea is to compute gradients of the Moreau envelope of the objective(which is"piece-wise convex")with adaptive smoothing *** of the Moreau envelope(i.e.,proximal operators)are approximated via the Hopf-Lax formula for the viscous Hamilton-Jacobi *** numerical examples illustrate global convergence.

关键词： Global optimization Moreau envelope Hamilton-Jacobi Hopf-Lax-Cole-Hopf Proximals Zero-order optimization

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通过聚阳离子取代策略实现压缩黄铜矿型硒化物[Rb3BaCl][In_(8)Se_(14)]以获得优异的非线性光学性能

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Science China Materials 2024年第6期67卷 2000-2007页

作者：吴帆陈文发吴子璇姜小明刘彬文郭国聪 State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China University of Chinese Academy of Sciences Beijing 100049China Fujian College University of Chinese Academy of SciencesFuzhou 350002China

单价Ag+或Li+引入到类金刚石结构的MQ22-(M=Ga,In;Q=S,Se)阴离子基团中能合成出良好的二阶非线性光学(NLO)晶体材料.然而,这些晶体分别面临着较低的抗激光损伤阈值(LIDT)或二氧化硅易被腐蚀等缺点,严重限制了其在高功率激光应用中的实用... 详细信息

单价Ag+或Li+引入到类金刚石结构的MQ22-(M=Ga,In;Q=S,Se)阴离子基团中能合成出良好的二阶非线性光学(NLO)晶体材料.然而,这些晶体分别面临着较低的抗激光损伤阈值(LIDT)或二氧化硅易被腐蚀等缺点,严重限制了其在高功率激光应用中的实用性.在本研究中,基于类金刚石结构的ZnSe,我们采用[Se_(4)Zn_(13)]Se_(2)4→[ClRb_(3)Ba]Se_(24)非常规的聚阳离子取代策略,设计并合成了一种新型的盐包硫属化合物[Rb_(3)BaCl][In_(8)Se_(14)](1).化合物1属于压缩黄铜矿型硒化物并保持了与AgInSe_(2)相同的晶体对称性(I-42d空间群).值得注意的是,由于InSe_(4)四面体结构单元的平行排列,化合物1具有相位匹配的强二次谐波(SHG)响应(2.0倍于AgGaS_(2)@2.90μm).此外,聚阳离子[Rb_(3)BaCl]^(4+)的引入促进了光学带隙(2.02 eV)的增强,有效地避免了对2.09μm激光的双光子吸收;同时结合较低的热膨胀系数,使得化合物1表现出高的LIDT(3.2倍于AgGaS2@2.09μm).本研究验证了在类金刚石结构中进行聚阳离子取代的可行性,并成功获得了性能优异的中远红外NLO材料.

关键词： chalcogenide nonlinear optical material substitution strategy diamond-like structure structure-property relationship

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广告点击率预估的逐层残差交互网络

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计算机学报 2024年第3期47卷 575-588页

作者：尹云飞龙连杰黄发良吴开贵重庆大学计算机学院重庆400044 广西人机交互与智能决策重点实验室南宁530100

网络广告费的收取通常是以用户的点击次数来计算的,因此如何准确地预估点击率(CTR)是广告公司十分关心的问题.当前先进水平的方法集中在构建各种高阶特征交互模型来预估CTR,但是高阶特征交互会丢失低阶信息,尤其是丢失原始特征的信息.为... 详细信息

网络广告费的收取通常是以用户的点击次数来计算的,因此如何准确地预估点击率(CTR)是广告公司十分关心的问题.当前先进水平的方法集中在构建各种高阶特征交互模型来预估CTR,但是高阶特征交互会丢失低阶信息,尤其是丢失原始特征的信息.为此,本文提出一个新的逐层残差交互网络,它在每次交互时都考虑原始特征的引导作用,被命名为逐层残差交互网(LRIN).LRIN强调高阶特征交互应该建立在原始特征逐层交互的基础上.n阶特征交互由原始特征与n-1阶特征通过元素积运算得到.进而,本文引入了多尺度方法来设计注意力网络.受逐层交互的影响,注意力网络也被设计成多层,称之为逐层注意力网络.为了将二者结合起来,本文提出将逐层残差交互网络的输出作为逐层注意力网络的权重,由此形成了一种新的双网络训练模型.在多个benchmark数据集上的实验结果表明,LRIN的性能比当前先进的方法在Criteo数据集上平均提高1.24%,在Avazu数据集上平均提高2.16%,在MovieLens-1M数据集上平均提高了1.3%,在Book-Crossing数据集上平均提高了1.27%.

关键词：残差网络逐层特征交互 CTR预估注意力

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Incidence and warning signs for complications of human brucellosis: a multi-center observational study from China

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Infectious Diseases of Poverty 2024年第1期13卷 53-62页

作者： Qing-Nan Shi Hui-Jie Qin Qiao-Shan Lu hu Li Zhong-fa Tao Meng-Guang fan Mu-Heta Aishan Zeng-Qiang Kou Qiu-Lan Chen Wen-wu Yin Yan-Ping Zhang National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases Chinese Center for Disease Control and PreventionChangbai RoadChangping DistrictBejing 102206China School of Public Health Guangxi Medical UniversityNanningChina Nanning Center for Disease Control and Prevention NanningChina Guizhou Center for Disease Control and Prevention GuiyangChina Inner Mongolia Center for Disease Control and Prevention HohhotChina Xinjiang Uighur Autonomous Region Center for Disease Control and Prevention UrumqiChina Shandong Center for Disease Control and Prevention JinanChina

Background Brucellosis is a severe zoonotic disease that is often overlooked, particularly in impoverished countries. Timely identification of focal complications in brucellosis is crucial for improving treatment outcomes. However, there is currently a lack of established indicators or biomarkers for diagnosing these complications. Therefore, this study aimed to investigate potential warning signs of focal complications in human brucellosis, with the goal of providing practical parameters for clinicians to aid in the diagnosis and management of *** A multi-center cross-sectional study was conducted in China from December 2019 to August 2021. The study aimed to investigate the clinical characteristics and complications of patients with brucellosis using a questionnaire survey and medical record system. The presence of warning signs for complications was assessed using univariate and multivariate logistic regression models. Receiver operating characteristic (ROC) curves and the area under the curve (AUC) were used for variable screening and model *** A total of 880 participants diagnosed with human brucellosis were enrolled. The median age of the patients was 50 years [interquartile range (IQR): 41.5-58.0], and 54.8% had complications. The most common organ system affected by complications was the osteoarticular system (43.1%), with peripheral arthritis (30.0%), spondylitis (16.6%), paravertebral abscess (5.0%), and sacroiliitis (2.7%) being the most prevalent. Complications in other organ systems included the genitourinary system (4.7%), respiratory system (4.7%), and hematologic system (4.6%). Several factors were found to be associated with focal brucellosis. These factors included a long delay in diagnosis [odds ratio (OR) = 3.963, 95% confidence interval(CI): 1.906-8.238 for > 90 days], the presence of underlying disease (OR = 1.675, 95%CI: 1.176-2.384), arthralgia (OR = 3.197, 95%CI: 1.986-5.148), eye bulging pain (OR = 3.482, 95%CI:

关键词： Brucellosis Complications Clinical spectrum Warning signs

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Spatiotemporal variability of rain-on-snow events in the arid region of Northwest China

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Journal of Arid Land 2024年第4期16卷 483-499页

作者： YANG Zhiwei CHEN Rensheng LIU Zhangwen ZHAO Yanni LIU Yiwen wu Wentong Qilian Alpine Ecology and Hydrology Research Station Key Laboratory of Ecological Safety and Sustainable Development in Arid LandsNorthwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China

Rain-on-snow(ROS)events involve rainfall on snow surfaces,and the occurrence of ROS events can exacerbate water scarcity and ecosystem vulnerability in the arid region of Northwest China(ARNC).In this study,using daily snow depth data and daily meteorological data from 68 meteorological stations provided by the China Meteorological Administration National Meteorological Information Centre,we investigated the spatiotemporal variability of ROS events in the ARNC from 1978 to 2015 and examined the factors affecting these events and possible changes of future ROS events in the *** results showed that ROS events in the ARNC mainly occurred from October to May of the following year and were largely distributed in the Qilian Mountains,Tianshan Mountains,Ili River Valley,Tacheng Prefecture,and Altay Prefecture,with the Ili River Valley,Tacheng City,and Altay Mountains exhibiting the most *** on the intensity of ROS events,the areas with the highest risk of flooding resulting from ROS events in the ARNC were the Tianshan Mountains,Ili River Valley,Tacheng City,and Altay *** number and intensity of ROS events in the ARNC largely increased from 1978 to 2015,mainly influenced by air temperature and the number of rainfall ***,due to the snowpack abundance in areas experiencing frequent ROS events in the ARNC,snowpack changes exerted slight impact on ROS events,which is a temporary ***,elevation imposed lesser impact on ROS events in the ARNC than other *** the ARNC,the start time of rainfall and the end time of snowpack gradually advanced from the spring of the current year to the winter of the previous year,while the end time of rainfall and the start time of snowpack gradually delayed from autumn to *** may lead to more ROS events in winter in the *** results could provide a sound basis for managing water resources and mitigating related disasters caused by ROS events in the ARNC.

关键词： rain-on-snow events snowpack snowmelt climate change Spearman's rank correlation arid region of Northwest China

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