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Journal of Geographical sciences 2024年第6期34卷 1228-1250页

作者：张晶管晨悦章琳虞舟鲁叶成煊朱从谋李思楠王珂干牧野 Institute of Applied Remote Sensing and Information Technology College of Environmental and Resource SciencesZhejiang UniversityHangzhou 310058China Zhejiang Key Research Laboratory of Agricultural Remote Sensing and Information Technology Hangzhou 310058China Shandong(Linyi)Institute of Modern Agriculture Linyi 276000ShandongChina Huzhou Spatial Planning Preparation and Research Center Huzhou 313000ZhejiangChina Zhejiang Digital Governance Space Planning and Design Co. Ltd.Hangzhou 310000China Department of Land Resources Management Zhejiang Gongshang UniversityHangzhou 310018China

Rural vitality is the life force expressed by a combination of endogenous dynamics and external influences. Exploring the complex relationship between rural functions, elements and flows could achieve sustainable rural development. This study constructed a theoretical framework guided by the four functions of production, living, ecology and culture with the support of mobile big data. Furthermore, the network centrality of villages was estimated to reflect the intensity of urban-rural social mobility ties. The results indicated marked spatial disparities in rural vitality, and the coupling of ecological-cultural vitality has a high degree of coherence. Four rural vitality grades were identified: high level(38, 14.08%), medium-high level(66, 24.44%), medium-low level(110, 40.74%) and low level(56, 20.74%), covering 270 administrative village units. The flow intensity of social linkage elements is consistent with rural vitality and the socioeconomic spillover effect of urban centers on neighboring villages was noticeable. Topographic complexity negatively affected the living function, mainly in the T1 and T2 terrain gradients;the rural ecological function was not fully correlated with urban adjacency, and proximity could lead to adverse effects such as urban sprawl and resource destruction. The application of this study is to explore the importance of “flow” by utilizing mobile big data to refine the evaluation unit to the village scale. Accelerating the construction of network coverage and information interconnection and promoting the elemental flow of people, transportation and information between urban and rural areas are important ways to enhance rural vitality.

关键词： rural vitality rural multifunction elements urban-rural flows mobile big data

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基于吉布斯采样的稀疏水声信道估计方法

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哈尔滨工程大学学报（英文版） 2024年第2期23卷 434-442页

作者：佟文涛葛威贾亦真张嘉恒 National Key Laboratory of Underwater Acoustic Technology Harbin Engineering UniversityHarbin 150001China Key Laboratory for Polar Acoustics and Application of Ministry of Education Harbin Engineering UniversityHarbin 150001China college of Underwater Acoustic Engineering Harbin Engineering UniversityHarbin 150001China Qingdao Innovation and Development Center of Harbin Engineering University Qingdao266400China State Key Laboratory of Acoustics Institute of AcousticsChinese Academy of SciencesBeijing 100190China

The estimation of sparse underwater acoustic(UWA)channels can be regarded as an inference problem involving hidden variables within the Bayesian *** the classical sparse Bayesian learning(SBL),derived through the expectation maximization(EM)algorithm,has been widely employed for UWA channel estimation,it still differs from the real posterior expectation of *** this paper,we propose an approach that combines variational inference(VI)and Markov chain Monte Carlo(MCMC)methods to provide a more accurate posterior ***,the SBL is first re-derived with VI,allowing us to replace the posterior distribution of the hidden variables with a variational ***,we determine the full conditional probability distribution for each variable in the variational distribution and then iteratively perform random Gibbs sampling in MCMC to converge the Markov *** results of simulation and experiment indicate that our estimation method achieves lower mean square error and bit error rate compared to the classic SBL ***,it demonstrates an acceptable convergence speed.

关键词： Sparse bayesian learning Channel estimation Variational inference Gibbs sampling

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Genetic analysis of walnut cultivars from southwest China:Implications for germplasm improvement

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Plant Diversity 2022年第6期44卷 530-541页

作者： Moses C.Wambulwa Peng-Zhen Fan Richard Milne Zeng-Yuan Wu Ya-Huang Luo Yue-Hua Wang Hong Wang Lian-Ming Gao Zuo-Ying Xiahou Ye-Chuan Jin Lin-Jiang Ye Zu-Chang Xu Zhi-Chun Yang De-Zhu Li Jie Liu CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming650201YunnanChina Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of SciencesKunming650201YunnanChina Department of Life sciences South Eastern Kenya University170-90200KituiKenya University of the Chinese Academy of sciences Beijing100049China Institute of Molecular Plant sciences School of Biological SciencesUniversity of EdinburghEdinburghUK School of School of Ecology and Environmental Science Yunnan UniversityKunming650091YunnanChina Yangbi Forestry and Grassland Administration Dali672500YunnanChina college of Life sciences University of Chinese Academy of SciencesKunming650201YunnanChina

Walnuts are highly valued for their rich nutritional profile and wide medicinal *** demand has led to the intensification of breeding activities in major walnut production areas such as southwest China,in order to develop more superior *** the increasing number of cultivars,accurate identification becomes fundamental to selecting the right cultivar for grafting,industrial processing or development of new *** ensure proper identification of cultivars and understand the genetic structure of wild and cultivated material,we genotyped 362 cultivated and wild individuals of walnut trees from southwest China(with two additional populations from Xinjiang,plus three cultivars from Canada,France and Belgium) using 36 polymorphic microsatellite *** found relatively low indices of genetic diversity(H_(O)=0.570,H_(E)=0.404,N_(A)=2.345) as well as a high level of clonality(>85% of cultivars),indicating reliance on genetically narrow sources of parental material for *** STRUCTURE and PCoA analyses generally delineated the two species,though considerable levels of introgression were also *** significantly,we detected a distinct genetic group of cultivated Juglans sigillata,which mainly comprised individuals of the popular ’Yangbidapao’ ***,a core set of 18 SSR loci was selected,which was capable of identifying 32 *** a nutshell,our results call for more utilization of genetically disparate material,including wild walnut trees,as parental sources to breed for more *** data reported herein will significantly contribute towards the genetic improvement and conservation of the walnut germplasm in southwest China.

关键词： Cultivars Genetic diversity Juglans sigillata Southwest China Walnut

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Meta-Analysis of Flowering-Related Traits and Mining of Candidate Genes in Maize

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Phyton-International Journal of Experimental Botany 2022年第6期91卷 1199-1209页

作者： Jianyu Lu Qingping Jiang Tongyu Liu Yangyang Zhou Mengtong Liu Jing Qu Yiyong Ma Shuyan Guan college of Life sciences Jilin Agricultural UniversityChangchun130118China college of Agronomy Jilin Agricultural UniversityChangchun130118China

Maize flowering is an important agronomic character,which is controlled by quantitative trait loci(QTL).Over the years,a large number of flowering-related QTL have been found in maize and exist in public ***,combining these data,re-analyzing and mining candidate loci and fine mapping of flowering-related traits to reduce confidence intervals has become a hot issue in *** this study,the QTL of 6 important agronomic traits of maize flowering were collected from 15 published articles,including flowering period(DA),Days to tasseling(DTT),Days to silking(DS),Days to pollen shedding(DTP),anthesis-silking interval(ASI)and the photosensitive(PS).Through meta-analysis,622 QTL were integrated into 26 meta-QTLs(MQTL).Finally,the candidate genes related to maize flowering(Gene IDs:ZM00001D005791,ZM00001D019045,ZM00001D050697,ZM00001D011139)were identified by Gene Ontology(GO)enrichment and hierarchical cluster analysis of expression *** on the results of this study,the genetic characteristics of maize flowering traits will be further analyzed,which is of great significance to guide the improvement of important agronomic characters and improve the efficiency of breeding.

关键词： Maize flowering-related traits meta-analysis MQTL candidate gene

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Layered bismuth oxide/bismuth sulfide supported on carrageenan derived carbon for efficient carbon dioxide electroreduction to formate

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Chinese Journal of Chemical Engineering 2022年第3期35卷 116-123页

作者： Xiangzhao Hu Junjie Sun Wanzhen Zheng Sixing Zheng Yu Xie Xiang Gao Bin Yang Zhongjian Li Lecheng Lei Yang Hou Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Institute of Zhejiang University-Quzhou Quzhou 324000China Department of Material Chemistry Nanchang Hangkong UniversityNanchang 330063China School of biological and Chemical Engineering Ningbo Technology UniversityNingbo 315100China

Electrochemical reduction of carbon dioxide(CO_(2)ER)into formate plays a crucial role in CO_(2)conversion and ***,it still faces the problems of high overpotential and poor catalytic ***,we report a hybrid CO_(2)ER electrocatalyst composed of layered bismuth sulfide(Bi_(2)S_(3))and bismuth oxide(Bi_(2)O_(3))supported on carrageenan derived carbon(Bi-CDC)prepared by a combined pyrolysis with hydrothermal *** such 3 D hybrid,layered Bi_(2)O_(3)and Bi_(2)S_(3)are uniformly grown on nanocarbon *** from strong synergistic effect between Bi_(2)O_(3)/Bi_(2)S_(3)and nanocarbon,Bi-CDC-1:2 displays a high Faradic efficiency(FE)of>80%for formate production in the range of-0.9 V to-1.1 V with the maximum formate FE of 85.6%and current density of 14.1 mA·cm^(-2) at-1.0 ***,a positive onset potential of-0.5 V,a low Tafel slope of 112.38 mV·dec^(-1),and a slight performance loss during long-term CO_(2)ER tests are observed on Bi-CDC-1:*** results shows that the better CO_(2)ER performance of Bi-CDC-1:2 than that of Bi_(2)O_(3)can be attributed to the strong interfacial interactions between nanocarbons and Bi_(2)O_(3)/Bi_(2)S_(3).In situ ATR-FTIR measurements reveal that the rate-determining step in the CO_(2)ER is the formation of HCOO^(*) *** with carbon support,Bi-CDC-1:2 can promote the production of HCOO^(*) intermediate and thus promoting CO_(2)ER kinetic.

关键词： Nanomaterials Catalyst Selectivity Bi_(2)S_(3)/Bi_(2)O_(3) CO_(2)electroreduction Formate

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Development of a New Cold-Tolerant Maize(Zea mays L.)Germplasm Using the ICE1 Gene from Arabidopsis thaliana

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Phyton-International Journal of Experimental Botany 2022年第8期91卷 1709-1719页

作者： Jing Qu Shuang Liu Peng Jiao Zhenzhong Jiang Jianbo Fei Shuyan Guan Yiyong Ma college of Agronomy Jilin Agricultural UniversityChangchun130118China college of Life sciences Jilin Agricultural UniversityChangchun130118China

To develop cold-tolerant maize germplasms and identify the activation of INDUCER OF CRT/DRE-BINDING FACTOR EXPRESSION(ICE1)expression in response to cold stress,RT-PCR was used to amplify the complete open reading frame sequence of the ICE1 gene and construct the plant expression vector *** maize embryos and calli were transformed with the recombinant vector using Agrobacterium tumefaciens-mediated *** the regenerated plantlets,three T1 lines were screened and identi-fied by PCR.A Southern blot analysis showed that a single copy of the ICE1 gene was integrated into the maize(Zea mays L.)genomes of the three T1 *** low temperature-stress conditions(4°C),the relative conductivity levels decreased by 27.51%–31.44%,the proline concentrations increased by 12.50%–17.50%,the malondialdehyde concentrations decreased by 16.78%–18.37%,and the peroxidase activities increased by 19.60%–22.89%in the T1 lines compared with those of the control.A real-time quantitative PCR analysis showed that the ICE1 gene was ectopically expressed in the roots,stems,and leaves of the T1 ***1 positively regulates the expression of the CBF genes in response to cold ***,this study showed the successful transformation of maize with the ICE1 gene,resulting in the generation of a new maize germplasm that had increased tolerance to cold stress.

关键词： Maize ICE1 cold tolerance inducer maize Arabidopsis thaliana

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Rectangle Attack Against Type-I Generalized Feistel Structures

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Chinese Journal of Electronics 2022年第4期31卷 713-720页

作者： ZHANG Yi LIU Guoqiang SHEN Xuan LI Chao college of Liberal Arts and sciences National University of Defense Technology Hunan Engineering Research Center of Commercial Cryptography Theory and Technology Innovation State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences college of Information and Communication National University of Defense Technology

Type-I generalized Feistel networks(GFN) are widely used frameworks in symmetric-key primitive designs such as CAST-256 and Lesamnta. Different from the extensive studies focusing on specific block cipher instances, the analysis against Type-I GFN structures gives generic security evaluation of the basic frameworks and concentrates more on the effect of linear transformation. Currently, works in this field mainly evaluate the security against impossible differential attack,zero-correlation linear attack, meet-in-the-middle attack and yoyo game attack, while its security evaluation against rectangle attack is still missing. In this paper, we filled this gap and gave the first structural analytical results of Type-I GFN against rectangle attack. By exploiting its structural properties, we proved there exists a boomerang switch for Type-I GFN for the first time,which is independent of the round functions. Then we turned the boomerang switch into chosen plaintext setting and proposed a new rectangle attack model. By appending 1 more round in the beginning of the boomerang switch, we constructed a rectangle distinguisher and a key recovery attack could be performed.

关键词： meet-in-the-middle attack basic frameworks boomerang switch rectangle attack model specific block cipher instances GFN structures cryptography generic security evaluation Feistel networks Data security key recovery attack linear transformation Cryptography theory rectangle distinguisher yoyo game attack symmetric-key primitive designs zero-correlation linear attack differential attack structural properties structural analytical results Cryptography Feistel structures

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Rare alleles from tolerant cultivars are useful for generating salt-tolerant rice

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Molecular Plant 2023年第2期16卷 306-307页

作者： Pannaga Krishnamurthy Prakash P.Kumar Department of biological sciences and Research Centre on Sustainable Urban Farming National University of Singapore14 Science Drive 4Singapore 117543Singapore

Salinity is a major environmental stress limiting crop *** gloomy forecast that by 2025 about 50%of farmland will be severely affected by salinity,coupled with the constantly increasing demand for food,drives home the urgent need to generate salt-tolerant crop plants for ensuring world food *** tolerance is a complex phenomenon regulated by the interplay of multiple genes and factors.

关键词： cultivar farmland alleles

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Achene mucilage formation process and extrusion from hydrated pericarp of Mirabilis himalaica

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Horticultural Plant Journal 2022年第2期8卷 251-260页

作者： Qingqing Huang Lu Zhang Xiaozhong Lan Yuzhen Chen Cunfu Lu National Engineering Laboratory for Tree Breeding College of Biological Sciences and BiotechnologyBeijing Forestry UniversityBeijing 100083China The Provincial and Ministerial Co-founded Collaborative Innovation Center for R&D in Tibet Characteristic Agricultural and Animal Husbandry Resources Tibet Agriculture and Animal Husbandry UniversityNyingchi 860000China

Myxospermy is an important feature of achenes of the alpine plant Mirabilis himalaica,and the achene mucilage increases the germination rate and early seedling growth during exposure to abiotic stresses,which has important functions that allow *** to survive the extreme climate of the Tibet ***,achene formation and mucilage extrusion are poorly *** the present study,comprehensive analyses were performed on mucilage production during achene development and mucilage release from hydrated achene pericarp in ***,fertilization initiated the development of *** achenes,during which their color,size and texture were altered ***,using a metachromatic staining procedure,cytological events,the establishment of mucilage secretory cells in the inner epicarp layer were *** hydration of mature achenes led to the rapid bursting of mucilage secretory cells,which released a hydrophilic gel that surrounded the ***,enzymatic digestion indicated that major components of the mucilage were pectins;glucose(41.40%),rhamnose(26.58%),galactose(18.33%),trehalose(12.12%),and mannose(1.57%)were found to be the components of achene by using ion-exchange chromatography.

关键词： Mirabilis himalaica Achene Mucilage formation Mucilage extrusion Pectin Polysaccharide

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Arteriolosclerosis differs from venular collagenosis in relation to cerebrovascular parenchymal damages:an autopsy-based study

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Stroke & Vascular Neurology 2023年第4期8卷 267-275,I0002-I0009页

作者： Yuan Cao Mei-Ying Huang Chen-Hui Mao Xue Wang Yuan-Yuan Xu Xiao-Jing Qian Chao Ma Wen-Ying Qiu Yi-Cheng Zhu Department of Neurology State Key Laboratory of Complex Severe and Rare DiseasesPeking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Department of Human Anatomy Histology and EmbryologyInstitute of Basic Medical SciencesNeuroscience CenterChinese Academy of Medical SciencesSchool of Basic MedicinePeking Union Medical CollegeBeijingChina

Background and purpose Cerebrovascular parenchymal damage is prevalent in ageing brains;however,its vascular aetiology has not been fully *** addition to the underlying role of sclerotic arterioles,the correlation between collagenised venules has not been ***,we aimed to investigate the associations between microvascular injuries,including arteriolosclerosis and venular collagenosis,and related parenchymal damages in ageing brains,to investigate the underlying *** We evaluated arteriolosclerosis and venular collagenosis in 7 regions from 27 autopsy cases with no history of stroke or brain *** correlations between the ratio of arteriolosclerosis,venular collagenosis and the severity of cerebrovascular parenchymal damage,including lacunes,microinfarcts,myelin loss,and parenchymal and perivascular haemosiderin deposits,were *** Arteriolosclerosis and venular collagenosis became more evident with *** was associated with lacunes(p=0.004)and brain parenchymal haemosiderin deposits in the superior frontal cortex(p=0.024)but not with leukoaraiosis *** collagenosis was not associated with the number of lacunes or haemosiderin,while white matter generally became paler with severe venular collagenosis in the periventricular(β=−0.430,p=0.028)and deep white matter(β=−0.437,p=0.025).Conclusion Our findings imply an important role for venular lesions in relation to microvessel-related parenchymal damage which is different from that for *** underlying mechanisms of both cerebral arterioles and venules require further investigation.

关键词： sclerosis damage injuries

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