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Wave effect of gravitational waves intersected with a microlens field Ⅱ:An adaptive hierarchical tree algorithm and population study

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 241-254页

作者： Xikai shan Guoliang Li Xuechun Chen Wen zhao Bin Hu Shude Mao Department of Astronomy Tsinghua University Purple Mountain Observatory Chinese Academy of Sciences Institute for Frontier in Astronomy and Astrophysics Beijing Normal University School of Physics and Astronomy Beijing Normal University School of Astronomy and Space Science University of Science and Technology of China CAS Key Laboratory for Researches in Galaxies and Cosmology Department of Astronomy University of Science and Technology of ChinaChinese Academy of Sciences

The gravitational lensing wave effect generated by a microlensing field embedded in a lens galaxy is an inevitable phenomenon in strong lensed gravitational waves （SLGWs）.This effect presents both challenges and opportunities for the detection and application of ***,investigating this wave effect requires computing a complete diffraction integral over each microlens in the *** is extremely time-consuming due to the large number of microlenses （10～3-10～6）.Therefore,simply adding all the microlenses is ***,the complexity of the time delay surface makes the lens plane resolution a crucial factor in controlling numerical *** this paper,we propose a trapezoid approximation-based adaptive hierarchical tree algorithm to meet the challenges of calculation speed and *** find that this algorithm accelerates the calculation by four orders of magnitude compared to the simple adding method and is one order of magnitude faster than the fixed hierarchical tree algorithm proposed for electromagnetic *** importantly,our algorithm ensures controllable numerical errors,increasing confidence in the *** with our previous work （***.66,239511,2023）,this paper addresses all numerical issues,including integral convergence,precision,and computational time1).Finally,we conducted a population study on the microlensing wave effect of SLGWs using this algorithm and found that the microlensing wave effect cannot be ignored,especially for Type II SLGWs （from saddle position of the time delay surface） due to their intrinsic geometric structures and their typical intersection with a denser microlensing ***,more than 33%（11%） of SLGWs have a mismatch larger than 1%（3%） compared to the unlensed ***,we found that the mismatch between signal pairs in a doubly imaged GW is generally larger than 10-3,and 61%（25%） of signal pairs have a mismatch larger than 1%（3%）.Therefo

关键词： gravitational lensing diffractional integral algorithm gravitational wave

等离子体增强反应蒸发沉积的氟掺杂氧化铟薄膜的性质

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物理学报 2002年第3期51卷 668-673页

作者：程珊华宁兆元黄峰苏州大学物理系苏州215006

采用直流辉光CF4 O2 等离子体增强反应蒸发方法沉积了氟掺杂氧化铟透明导电薄膜 ,经过真空退火处理薄膜的电阻率达到 1 8× 10 - 3 Ω·cm ,透光率高于 80 %.研究了掺氟量和退火温度对薄膜电阻率和透光率的影响 ,结果表明 :氟的掺入增... 详细信息

采用直流辉光CF4 O2 等离子体增强反应蒸发方法沉积了氟掺杂氧化铟透明导电薄膜 ,经过真空退火处理薄膜的电阻率达到 1 8× 10 - 3 Ω·cm ,透光率高于 80 %.研究了掺氟量和退火温度对薄膜电阻率和透光率的影响 ,结果表明 :氟的掺入增加了载流子浓度 ,使得薄膜的电阻率明显下降 ,而薄膜的透光率变差 ,但是可以通过真空退火处理使其得到显著的改善 ,掺氟量越大需要的退火温度越高 .X射线衍射分析说明 ,氟的掺入使薄膜的无序度增加 ;退火处理提高了薄膜的结晶状况 ,改善了薄膜的透光性能 ,同时也没有增加薄膜的电阻率 .

关键词：透明导电薄膜氟掺杂等离子体增强反应蒸发沉积氧化铟薄膜导电性能光学性能

ImSpiRE: image feature-aided spatial resolution enhancement method

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Science China Life Sciences 2025年第1期 272-283页

作者： Yuwei hua Yizhi Zhang Zhenming Guo shan Bian Yong Zhang State Key Laboratory of Cardiovascular Diseases and Medical Innovation Center Institute for Regenerative MedicineDepartment of NeurosurgeryShanghai East HospitalShanghai Key Laboratory of Signaling and Disease ResearchFrontier Science Center for Stem Cell ResearchSchool of Life Sciences and TechnologyTongji University

The resolution of most spatially resolved transcriptomic technologies usually cannot attain the single-cell level, limiting their applications in biological discoveries. Here, we introduce ImSpiRE, an image feature-aided spatial resolution enhancement method for in situ capturing spatial transcriptome. Taking the information stored in histological images, ImSpiRE solves an optimal transport problem to redistribute the expression profiles of spots to construct new transcriptional profiles with enhanced resolution, together with extending the gene expression profiles into unmeasured regions. Applications to multiple datasets confirm that ImSpiRE can enhance spatial resolution to the subspot level while contributing to the discovery of tissue domains, signaling communication patterns, and spatiotemporal characterization.

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Establishing a new testing protocol of the electrochemical stability window for electric double-layer capacitors

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Science China Chemistry 2025年第01期 217-225页

作者： Ruilin Hou Xiaoxi zhao Tingting Liang Qingyun Dou shan Xu Xingbin Yan School of Materials Science and Engineering Sun Yat-sen University Laboratory of Clean Energy Chemistry and Materials Lanzhou Institute of Chemical Physics Chinese Academy of Sciences College of Engineering and Applied Sciences Nanjing University Center of Industrial Analysis and Testing Guangdong Academy of Science

The electrochemical stability window(ESW) is crucial for determining the energy density of electric double-layer capacitors(EDLCs). However, current ESW testing protocols of EDLCs are strongly affected by artificial factors, thereby leading to unreliable result. To solve this problem, we first identify the key shortcomings of the traditional protocols by analyzing their test principles. Subsequently, taking an aqueous carbon-based EDLC as an example, we design a side reaction descriptor to represent the response difference in the charging capacitance to side reactions between the cyclic voltammetry and galvanostatic chargedischarge methods. With the aid of this descriptor, we propose a new ESW testing protocol, which is not only able to completely avoid the adverse influence of subjective factors but also fully consider the operating condition limitations. The protocol can be extended from the single electrode to the full device. This work proposes a more rigorous definition of ESW and provides a reliable protocol for evaluating the ESW of EDLCs.

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Rapid and scalable preparation of highly quaternized polymer networks to achieve efficient simultaneous adsorption of iodide and pertechnetate

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Science China Chemistry 2025年第01期 337-349页

作者： Meiyun Xu Song Gu Fulong Chen Zhe zhao Peng Liu Daoben hua State Key Laboratory of Radiation Medicine and Protection School of Radiological and Interdisciplinary Sciences (RAD-X) Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions Soochow University

The efficient separation of fission products,such as TcO4-and I-,holds strategic significance for the management of radioactive wastes and environmental *** this study,we propose an ultrafast strategy for scalable preparation of a highly quaternized organic network to facilitate efficient and synchronous separation of iodide and *** network can be prepared within a few minutes at room temperature,using polyethylenimine and 1,2,4,5-tetrakis（bromomethyl）benzene as building *** chlorine replacement,the network,abundantly decorated with quaternary ammonium groups （Cl@QPN）,exhibits an ultrahigh positive charge density of 7.6 mmol/*** enables the rapid and efficient enrichment of target anions through strong electrostatic Coulomb *** a result,Cl@QPN exhibits significantly higher adsorption rate constants of 0.830 g/（mg min） for ReO4-（a nonradioactive surrogate of TcO4-） and 0.677 g/（mg min） for I-compared to other ***,it possesses high adsorption capacities,reaching 1,681 mg/g for ReO4-and 917.4 mg/g for I-.Cl@QPN also demonstrates good selectivity towards target ions and shows efficient adsorption for99TcO4-.Additionally,Cl@QPN exhibits high dynamic processing capacities,handling up to 3,100 and 7,400 kg of simulated streams per kilogram of material for I-and ReO4-,respectively.

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Rapid isolation of placenta extracellular vesicles via affinity chromatography

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Rapid isolation of placenta extracellular vesicles via affin...

Enhanced subacute ischemic stroke treatment via multistage drug delivery system design for combination therapy

中国生理学会生殖科学专业委员会—中国动物学会生殖生物学分会第二次联合学术年会暨“生殖科学专业委员会第二次学术交流会”和“生殖生物学分会第十六次学术年会”

作者： Guo-gang Cheng Ju-zuo Zhang hua-shan zhao Bao-zhen Zhang Jin-yu Han Jie Chen Bao-bei Wang Meng-xia Li Tian-xia Xiao Jian Zhang Xiu-jun Fan Laboratory for Reproductive Health Shenzhen Institute of Advanced TechnologyChinese Academy of Sciences Key Laboratory of Microbiology School of Life ScienceHeilongjiang University

Extracellular vesicles(EVs) can mediate intercellular communication by transferring cargo proteins and nucleic acids between *** biophysical and biochemical properties can be used to isolate EVs,including size,mass density,shape,charge,and antigen ***,rapid isolation of specific organs EVs,particularly for placenta EVs,from plasma is still a big *** preliminary researches have demonstrated that the chondroitin sulfate A presented on the surface of trophoblast cells and some EVs secreted by trophoblast *** protein rVAR2 can specifically bind to trophoblast cells expressing the chondroitin sulfate *** this study,we used the rVAR2 protein as a substrate to separate extracellular vesicles in plasma by affinity *** we examined the morphology,number,and purity of isolated EVs by TEM and *** results show that,after home-made affinity chromatography,a certain amount of exosomes which expressing CD63 marker can be *** the same time,we also developed the new technique for EVs immune localization and analyzed the nucleic acids and proteins in trophoblast cells to ensure isolated EVs and trophoblast cells have ’homology’.More study need to be performed in order to improve the accuracy and efficiency isolation of placental EVs and to provide an novel noninvasive diagnosis method for placental diseases research.

关键词： extracellular vesicles placenta affinity chromatography noninvasive diagnosis

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Science China Chemistry 2025年

作者： Xihan Xu Juan-Juan Li Jiamin Li Hui-Yan Zhang Yilin Qi Bing-Sen Shi Tianqi Li shan-shan Su Weitao zhao Chang Chen Zhongying Gong Huiyu Liu Ke-Rang Wang Dong-Sheng Guo Xue Xue State Key Laboratory of Medicinal Chemical Biology College of Pharmacy Nankai University College of Chemistry State Key Laboratory of Elemento-Organic Chemistry Key Laboratory of Functional Polymer Materials (Ministry of Education) Frontiers Science Center for New Organic Matter Collaborative Innovation Center of Chemical Science and EngineeringNankai University College of Chemistry and Materials Science State Key Laboratory of New Pharmaceutical Preparations and Excipients Key Laboratory of Medicinal Chemistry and Molecular Diagnosis (Ministry of Education) Key Laboratory of Chemical Biology of Hebei Province Hebei Research Center of the Basic Discipline of Synthetic Chemistry Hebei University Department of Neurology Tianjin First Central Hospital School of Medicine Nankai University Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic Composites Beijing Laboratory of Biomedical Materials Bionanomaterials & Translational Engineering Laboratory Beijing Key Laboratory of BioprocessBeijing University of Chemical Technology

The management of acute ischemic stroke remains challenging due to its abrupt onset and the narrow treatment window,resulting in high rates of disability and *** therapy for neuroprotection and neurorepair strategies provided new hopes for subacute stroke *** we designed a multistage nanodelivery system that matches the unique microenvironment of the subacute phase of stroke,which utilizes calixarene as a building block to effectively load the neuroprotective drug *** calixarene is designed with glycosidic linkages targeting the glucose transporter 1 (GLUT1)on the blood-brain barrier (BBB) and azo bonds that are responsive to hypoxic ***,the decomposed calixarene molecules themselves possess intrinsic bio-activation to modulate inflammatory responses,achieving a multistage therapeutic approach that transitions from targeting to release and finally to *** approach combines anti-inflammation and neuroprotection,providing a multi-level treatment *** system was validated in a rat model of permanent middle cerebral artery occlusion (pMCAO),demonstrating that intravenous administration of the nanodelivery system repairs brain damage and improves motor function 24 h post-pMCAO *** work offers a precise and integrative strategy for stroke patients missing the acute therapy window to improve functional recovery and enhance the effect of comprehensive treatment.

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太子河流域生境质量及其与社会经济的关系

生态学杂志 2017年第10期36卷 2917-2925页

作者：王琼卢聪韩青范志平刘杰李法云涂志华王善祥赵悦辽宁石油化工大学生态环境研究院辽宁抚顺113001 辽宁石油化工大学化学化工与环境学部辽宁抚顺113001 中国科学院沈阳应用生态研究所沈阳110016 辽宁老秃顶子国家级自然保护区辽宁抚顺113208

采用主成分分析(PCA)与熵权相结合的方法,对太子河流域生境质量进行评价,并运用相关分析和冗余分析的方法识别社会经济发展和土地利用方式对生境质量的影响。结果表明:太子河流域生境质量等级为好的河段占4.35%,较好和一般的河段占91.3... 详细信息

采用主成分分析(PCA)与熵权相结合的方法,对太子河流域生境质量进行评价,并运用相关分析和冗余分析的方法识别社会经济发展和土地利用方式对生境质量的影响。结果表明:太子河流域生境质量等级为好的河段占4.35%,较好和一般的河段占91.30%,差的河段占2.17%;生境质量等级较好的河段主要位于上游地区,中游地区生境质量一般,下游鞍山段的生境质量较差;流域社会经济发展和土地利用方式是影响生境质量的主要因素,相关分析和冗余分析均显示生境质量与人口密度、人均地区生产总值、第一产业、第二产业,以及与耕地、建设用地面积比例呈显著负相关关系,而与林地面积比例呈显著正相关;社会经济状况和土地利用方式能分别解释流域生境质量特征的45.7%和39.5%;合理配置产业结构、优化土地利用方式可有效地逐步改善太子河流域生境质量。

关键词：生境质量评价主成分分析熵权法社会经济土地利用方式

RNA silencing:From discovery and elucidation to application and perspectives

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Journal of Integrative Plant Biology 2022年第2期64卷 476-498页

作者： Jian-hua zhao Hui-shan Guo State Key Laboratory of Plant Genomics Institute of Microbiologythe Chinese Academy of SciencesBeijing100101 China CAS Center for Excellence in Biotic Interactions University of the Chinese Academy of SciencesBeijing100049 China

RNA silencing(or RNA interference,RNAi)is a conserved mechanism for regulating gene expression in *** discovery of natural trans-kingdom RNAi indicated that small RNAs act as signaling molecules and enable communication between organisms in different *** phenomenon and potential mechanisms of trans-kingdom RNAi are among the most exciting research *** better understand trans-kingdom RNAi,we review the history of the discovery and elucidation of RNAi *** on canonical RNAi mechanisms,we summarize the major points of divergence around RNAi pathways in the main eukaryotes’kingdoms,including plants,animals,and *** review the representative incidents associated with the mechanisms and applications of trans-kingdom RNAi in crop protection,and discuss the critical factors that should be considered to develop successful trans-kingdom RNAi-based crop protection strategies.

关键词： crop protection gene expression RNA silencing small RNAs trans-kingdom RNAi