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Science China Chemistry 2025年第01期 163-173页

作者： Chenhui Zhang Chunjun Liang Fulin Sun Ting Zhu Xinghai Huang Yuzhu Guo Xinyu Guo Kunyang Ge dan Li Fangtian You Zhiqun He Key Laboratory of Luminescence and Optical Information Ministry of Education Institute of Optoelectronic TechnologyBeijing Jiaotong University Department of Physics School of Physical Science and Engineering Beijing Jiaotong University

In the field of perovskite solar cells(PSCs), the research on defects in the buried interface has been relatively limited due to its non-exposure; however, this interface significantly impacts the performance enhancement of inverted PSCs. This study employs phenylethylammonium chloride(PEACl) molecules as a buffer layer to modify the buried interface of p-i-n structured PSCs,aiming to enhance the uniformity of self-assembled monolayers(SAMs) and facilitate the uniform nucleation and growth of perovskite films on the substrate. Furthermore, the introduction of the PEACl buffer layer effectively passivates defects at the bottom of the perovskite layer and notably enhances the crystal quality of the perovskite film by mitigating residual stress,thereby reducing nonradiative recombination loss. Following these optimizations, the MA-free PSCs treated with PEACl achieve a power conversion efficiency(PCE) of 24.11%, with significant improvements in storage, thermal stability, and operational stability. Particularly noteworthy is the device's performance in an unencapsulated state, whereas after 1,500 hours of continuous light operation stability testing, it retains 97% of its original efficiency. This study not only enriches the systematic understanding of the characteristics of the buried interface in PSCs but also contributes significantly to advancing the commercial production of perovskite photovoltaic technology.

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Palladium installed copper-organic framework for C–C coupling reactions

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Science China Chemistry 2025年

作者： Yu-Mei Wang Mei-Xia Tao Kai-Ming Mo Xu Chen Shu-Hua Zhong Elena S Shubina Guo-Hong ning dan Li College of Chemistry and Materials Science Guangdong Provincial Key Laboratory of Supramolecular Coordination ChemistryJinan University A.n.nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences

The formation of C–C bonds is a crucial aspect of organic synthesis. Synthesists' long-term objective is to identify novel catalysts to optimize reaction systems based on traditional transition metal catalysis. This study explores the synthesis and catalytic potential of palladium-installed covalent metal-organic frameworks(CMOFs) based on copper cyclic trinuclear units(Cu-CTUs). By incorporating palladium ions into the imine-based framework jnM-7 through a straightforward immersion method, we achieved a notable enhancement in catalytic activity for critical C–C coupling reactions, including C–H arylation and Sonogashira cross-coupling. The resulting jnM-7-Pd demonstrated remarkable stability and recyclability, maintaining its efficiency over at least three cycles without any decline in efficiency.

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国际经贸协定中密码技术产品保护规则新发展及中国因应

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科技与法律（中英文） 2025年第1期 103-112页

作者：赵丹深圳市社会科学院政法研究所广东深圳518000

数字经济时代,密码技术作为保障信息安全的核心技术,其重要性日益凸显。而密码技术的广泛运用也可能影响国家安全和公共利益。因此,密码技术的运用和规制一直寻求私权保护与执法需求、市场驱动与政府干预、贸易自由与国家规制之间的平... 详细信息

数字经济时代,密码技术作为保障信息安全的核心技术,其重要性日益凸显。而密码技术的广泛运用也可能影响国家安全和公共利益。因此,密码技术的运用和规制一直寻求私权保护与执法需求、市场驱动与政府干预、贸易自由与国家规制之间的平衡。近年来,CPTPP和DEPA等高标准国际经贸协定相继纳入使用密码技术的ICT产品规则,一方面要求减少对使用密码技术的ICT产品不合理的贸易限制,强化数字知识产权保护;另一方面也尊重国家对密码技术的规制权,包括金融机构和市场例外、执法机关例外等限制性规则。中国在积极推进加入CPTPP和DEPA的过程中,应积极对接密码技术产品规则,大力发展商用密码技术,加强与CPTPP和DEPA成员国在密码技术和网络安全领域的合作与信息共享,并进一步完善密码技术管理的政策法规。

关键词：密码技术国际经贸协定出口管制 CPTPP DEPA

Symmetry quantification and segmentation in STEM imaging through Zernike moments

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Chinese Physics B 2024年第8期33卷 39-48页

作者： jiadong dan Cheng Zhang 赵晓续 n.Duane Loh Department of Biological Sciences National University of SingaporeSingapore Center for Bioimaging Sciences(CBIS) National University of SingaporeSingapore Department of Physics National University of SingaporeSingapore School of Materials Science and Engineering Peking UniversityBeijing 100871China

We present a method using Zernike moments for quantifying rotational and reflectional symmetries in scanning transmission electron microscopy(STEM)images,aimed at improving structural analysis of materials at the atomic *** technique is effective against common imaging noises and is potentially suited for low-dose imaging and identifying quantum *** showcase its utility in the unsupervised segmentation of polytypes in a twisted bilayer TaS_(2),enabling accurate differentiation of structural phases and monitoring transitions caused by electron beam *** approach enhances the analysis of structural variations in crystalline materials,marking a notable advancement in the characterization of structures in materials science.

关键词： scanning transmission electron microscopy(STEM) symmetry segmentation

Detecting the presence of natural forests using airborne laser scanning data

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Forest Ecosystems 2023年第6期10卷 668-680页

作者： Marie-Claude jutras-Perreault Terje Gobakken Erik næsset Hans oleØrka Faculty of Environmental Sciences and natural Resource Management Norwegian University of Life SciencesNMBUP.O.BoxNO-1432ÅsNorway

Centuries of forest exploitation have caused significant loss of natural forests in Europe,leading to a decline in populations for many *** prevent further loss in biodiversity,the norwegian government has set a target of protecting 10%of the forested ***,recent data from the national Forest Inventory(nFI)reveals that less than 2%of norway's forested area consists of natural *** identify forests with high conservation value,we used vertical and horizontal variables derived from airborne laser scanning(ALS)data,along with nFI plot *** study aimed to predict the presence of natural forests across three counties in southeastern norway,using three different definitions:pristine,near-natural,and semi-natural *** forests are scarce,and their underrepresentation in field reference data can compromise the accuracy of the *** address this,we assessed the potential gain of including additional field data specifically targeting natural forests to achieve a better balance in the ***,we examined the impact of stratifying the data by dominant tree species on the performance of the *** results revealed that semi-natural forests were the most accurately predicted,followed by near-natural and pristine forests,with Matthews correlation coefficient values of 0.32,0.24,and 0.17,*** additional field data did not improve the ***,stratification by species improved the accuracy of predictions for near-natural and semi-natural forests,while reducing accuracy for pristine *** use of horizontal variables did not improve the *** study demonstrates the potential of ALS data in identifying forests with high conservation *** provides a basis for further research on the use of ALS data for the detection and conservation of natural forests,offering valuable insights to guide future forest preservation efforts.

关键词： natural forest ALS naturalness Vertical variables Horizontal variables Biodiversity Forest condition Ecosystem services

Effects of Topography and Land use on Woody Plant Species Composition and Beta Diversity in an Arid Trans-Himalayan Landscape, nepal

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journal of Mountain Science 2014年第5期11卷 1112-1122页

作者： Shishir PAUDEL ole R VETAAS natural Resources Ecology and Management Oklahoma State UniversityStillwater OK 74078 USA Department of Geography University of BergenPost Box 7800 N-5020 Bergen Norway

Distribution patterns of plant species are believed to be impacted by small-scale habitat heterogeneity. However, there have been few comparative studies examining how woody vegetation composition and diversity varies with aspects of different orientations in the Trans-Himalayan region at a local scale. Here, we examined the effects of incoming solar radiation on variation in woody species composition and compared the diversity between the northeast- and southwest-facing slopes in a Trans-Himalayan valley of nepal. We also examined the implicit interactions between slope orientation and land use in determining the compositional variations between the slopes. We selected two pairs of northeast- and southwest-facing slopes where the first pair has a similar land use and differs in exposure only(Pisang site) while the other pair has clear differences in land use in addition to slope exposure(Braka site). In each site, we sampled 72 plots(36 on each slope) in which the presence and absence of woody species, environmental variables, and disturbance were recorded. Correspondence Analysis(CA) results suggested that the woody species composition significantly varied between northeast- and southwest-facing slopes at both sites, and was significantly correlated with measured environmental variables such as radiation index, altitude, and canopy openness. In the Braka site,mean alpha diversity was significantly higher on southwest-facing slopes. In contrast, beta diversity and gamma diversity were greater on northeast-facing slopes at both sites. Our results suggest that topographic variables(e.g., radiation index) affect species composition between the slopes, likely due to their influence on small scale abiotic environmental variables. However, the effects of land use, such as livestock browsing/grazing may interact with the effects of slope exposure, effectively reducing differences in species composition within slopes but enhancing the differences in beta diversity between

关键词： Correspondence analysis Diversity Environmental gradients Himalaya Land use Topographic aspect Woody vegetation

circT P63-n suppresses the proliferation and metastasis of nasopharyngeal carcinoma via engaging with HSP90AB1 to modulate the YAP1/Hippo signaling pathway

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Science China Life Sciences 2025年

作者： dan Wang Sicheng Zuo junshang Ge Hongke Qu jie Wu na Yi Lei Shi Yumin Wang Yongzhen Mo Chunmei Fan Yi He Pan Chen Ming Zhou Bo Xiang Wei Xiong Wenjia Guo Zhaoyang Zeng Can Guo nHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Cancer Metabolism Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine Central South University Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education Cancer Research Institute and School of Basic Medicine Sciences Central South University Furong Laboratory Cancer Research Institute Affiliated Cancer Hospital of Xinjiang Medical University Xinjiang Key Laboratory of Translational Biomedical Engineering

Circular RnAs(circRnAs) play pivotal roles in the development and progression of various diseases, including malignant tumors. However,the biological functions and the underlying mechanisms of many circRnAs remain elusive. In this study, we identified a novel circRnA,circTP63-n, generated through the splicing of exons 2–4 of the TP63 gene in nasopharyngeal carcinoma(nPC). circTP63-n was found to be downregulated in clinical samples of nPC. Both in vitro and in vivo experiments unequivocally demonstrated that circTP63-n inhibits the proliferation and metastasis of nPC cells. Further investigations revealed that circTP63-n interacted with the HSP90AB1 protein, leading to the recruitment of LATS/YAP1 proteins. This, in turn, induced phosphorylation and ubiquitination-dependent degradation of YAP1, resulting in reduced nuclear translocation of YAP1 and inhibition of the transcriptional activation of downstream oncogenic genes, including InHBA, MMP3, and CCnE2. Our findings highlight the identification of circTP63-n, a novel circRnA encoded by an important tumor-relevant gene TP63 and elucidate its molecular mechanism as a tumor suppressor in nPC. These insights offer novel potential molecular markers and therapeutic targets for the clinical diagnosis and treatment of nPC.

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The minimal measurement number for generalized conjugate phase retrieval

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Science China Mathematics 2022年第3期65卷 655-664页

作者： Wei dan College of Big Data and Internet Shenzhen Technology UniversityShenzhen 518118China

The generalized conjugate phase retrieval problem aims to reconstruct a complex signal x ∈ C^(n) from quadratic measurements x*A_(1)x,...,x*A_(m)x,where A_(1),...,A_(m)∈R^(n×n) are real symmetric *** equivalent formulation for generalized conjugate phase retrieval along with the minimal measurement number required for accurate retrieval(up to a global phase factor as well as conjugacy) is derived in this *** present a set of nine vectors in R^(4) and prove that it is conjugate phase retrievable on C^(4).This result implies the measurement number bound 4n-6 is not optimal for some n,which confirms a conjecture in the article by Evans and Lai(2019).

关键词： phase retrieval measurement number conjugate

Comparisons of improved genomic predictions generated by different imputation methods for genotyping by sequencing data in livestock populations

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journal of Animal Science and Biotechnology 2020年第2期11卷 316-326页

作者： Xiao Wang Guosheng Su dan Hao Mogens SandøLund Haja n.Kadarmideen Quantitative Genomics Bioinformatics and Computational Biology GroupDepartment of Applied Mathematics and Computer ScienceTechnical University of DenmarkRichard Peterson PladsBuilding 3242800 Kongens LyngbyDenmark Center for Quantitative Genetics and Genomics Department of Molecular Biology and GeneticsAarhus University8830 TjeleDenmark Department of Molecular Biology and Genetics Aarhus University8000 Aarhus CDenmark College of Animal Science and Technology Northwest A&F UniversityYangling 712100ShannxiChina

Background:Genotyping by sequencing(GBS)still has problems with missing *** is important for using GBS for genomic predictions,especially for low depths,due to the large number of missing *** allele frequency(MAF)is widely used as a marker data editing criteria for genomic *** this study,three imputation methods(Beagle,IMPUTE2 and FImpute software)based on four MAF editing criteria were investigated with regard to imputation accuracy of missing genotypes and accuracy of genomic predictions,based on simulated data of livestock ***:Four MAFs(no MAF limit,MAF≥0.001,MAF≥0.01 and MAF≥0.03)were used for editing marker data before ***,IMPUTE2 and FImpute software were applied to impute the original ***,IMPUTE2 also imputed the expected genotype dosage after genotype correction(GcIM).The reliability of genomic predictions was calculated using GBS and imputed GBS *** results showed that imputation accuracies were the same for the three imputation methods,except for the data of sequencing read depth(depth)=2,where FImpute had a slightly lower imputation accuracy than Beagle and *** was observed to be the best for all of the imputations at depth=4,5 and 10,but the worst for depth=*** genomic prediction,retaining more SnPs with no MAF limit resulted in higher *** the depth increased to 10,the prediction reliabilities approached those using true genotypes in the GBS *** and IMPUTE2 had the largest increases in prediction reliability of 5 percentage points,and FImpute gained 3 percentage points at depth=*** best prediction was observed at depth=4,5 and 10 using GcIM,but the worst prediction was also observed using GcIM at depth=***:The current study showed that imputation accuracies were relatively low for GBS with low depths and high for GBS with high *** resulted in larger gains in the reliability of genomic predictions for GBS with lowe

关键词： Genomic prediction Genotyping by sequencing Imputation MAF Simulation

A Systems Approach for Analyzing Vegetative and Soil Degradation in Arnigad Micro-watershed of Indian Himalayan Region

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journal of Mountain Science 2010年第4期7卷 315-326页

作者： Mohit Gera Prem L.Sankhayan ole Hofstad Govt. of j&K VanbhavanBelow GumatJammu-180001(J&K) India Department of Ecology and natural Resource Management Norwegian University of Life Sciences(UMB)P.O.Box 5003N-1432 sNorway

This study analyzes the vegetative and soil degradation,measured as biomass and soil loss,for Arnigad micro-watershed located in Indian Himalayan state of Uttarakhand,in systems framework by using dynamic linear programming bio-economic *** focus is at investigating the effects of alternate policy regimes,i.e.,introduction of improved energy sources for cooking along with substitution of existing local livestock breeds with improved breed,reduction in human population growth and introduction of high yielding varieties of main crops including paddy,maize and *** model horizon extended over a period of 25 years,i.e.,from 2006 to *** was found that the model scenario incorporating increased use of improved energy sources along with substitution of local cows by improved cows could be the most effective policy option in reducing vegetative and soil *** vegetative biomass density declined to 19.76% compared to 35.24% in the BASE scenario and soil erosion loss was also lowered by 29.13%.Also,the reduction of population growth rate to half of the BASE scenario led to minor improvements in *** of high yielding varieties of main crops slightly increased vegetative degradation but reduced soil loss(8.35%) with respect to the BASE *** a phenomenon could be explained in terms of changed crop mix resulting in reduced amount of crop by-products requiring increased lopping of tree branches for animal *** policy option of the increased use of improved energy sources along with substitution of improved breed of cows resulted in 9.58% higher *** of high yielding varieties of crops led to 1.92% increase in income,but the income decreased by 1.25 % when population growth was reduced to *** usefulness of the model lies in analyzing the systems behavior in its entirety where the results can predict the possible direction of change as a result of manipulation in alternate economic regimes.

关键词： Bio-economic model Dynamic linearprogramming Improved energy sources Vegetativeand soil degradation Soil erosion Indian Himalayanregion