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Collaborative positioning for swarms:A brief survey of vision,LiDAR and wireless sensors based methods

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Defence Technology（防务技术） 2024年第3期33卷 475-493页

作者： Zeyu Li Changhui Jiang Xiaobo Gu ying xu Feng zhou Jianhui Cui College of Geodesy and Geomatics Shandong University of Science and TechnologyQingdao266590China Geoloc Laboratory Universite Gustave EiffelParis77454France School of Automation Guangdong University of TechnologyGuangzhou510006China

As positioning sensors,edge computation power,and communication technologies continue to develop,a moving agent can now sense its surroundings and communicate with other *** receiving spatial information from both its environment and other agents,an agent can use various methods and sensor types to localize *** its high flexibility and robustness,collaborative positioning has become a widely used method in both military and civilian *** paper introduces the basic fundamental concepts and applications of collaborative positioning,and reviews recent progress in the field based on camera,LiDAR(Light Detection and Ranging),wireless sensor,and their *** paper compares the current methods with respect to their sensor type,summarizes their main paradigms,and analyzes their evaluation ***,the paper discusses the main challenges and open issues that require further research.

关键词： Collaborative positioning Vision LiDAR Wireless sensors Sensor fusion

METTL1 promotes colorectal cancer cell proliferation by attenuating CHEK2-induced G1/S phase arrest

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Genes & Diseases 2024年第2期11卷 579-581页

作者： Houxiang Jiang ying Liu Huibin Song Jinquan Xia ying Tian Luolin Wang Mingwei Li Zhenyu xu Zhenglei xu Chang Zou Department of Gastrointestinal Surgery The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College)WuhuAnhui 241001China Anhui Province Clinical Research Center for Critical Respiratory Medicine WuhuAnhui 241001China Department of Clinical Medical Research Center The Second Clinical Medical College (Shenzhen People's Hospital) of Jinan UniversityThe First Affiliated Hospital of Southern University of Science and TechnologyShenzhenGuangdong 518020China Integrated Chinese and Western Medicine Postdoctoral Research Station Jinan UniversityGuangzhouGuangdong 510632China School of Pharmacy Southwest Medical UniversityLuzhouSichuan 646000China Department of Gastroenterology Shenzhen People's Hospital(The Second Clinical Medical CollegeJinan UniversityThe First Affiliated HospitalSouthern University of Science and Technology)ShenzhenGuangdong 518020China Precision Medicine Center The First Affiliated Hospital of Wannan Medical College(Yijishan Hospital of Wannan Medical College)WuhuAnhui 241001China School of Medicine Life and Health SciencesThe Chinese University of Hong KongShenzhenGuangdong 518172China

Colorectal carcinoma(CRC),the third most commonly diagnosed cancer,accounts for 9.7%of all newly diagnosed cancer cases and 9.4%of cancer-related deaths globally.1 Recent studies have demonstrated that post-transcriptional RNA modifications,such as N^(6)-methyladenosine,N^(5)-methylcytosine,and N^(7)-methylguanosine,play critical roles in the regulation of mRNA stability and translation,primary microRNA processing,and lncRNA-protein complex that contributes to the progression of human cancer.

关键词： cancer colorectal globally

A privacy-preserving data aggregation system based on blockchain in VANET

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Blockchain(Research and Applications) 2024年第3期5卷 140-152页

作者： Ruicheng Yang Guofang Dong Zhengnan xu Juangui ning Jianming Du School of Electrical Information Technology Yunnan Minzu UniversityKunming 650500China Yunnan Key Laboratory of Unmanned Autonomous System Kunming650500China

In the realm of vehicular ad hoc networks(VANETs),data aggregation plays a pivotal role in bringing together data from multiple vehicles for further processing and *** data feedback can significantly impact vehicle operations,control,and overall safety,necessitating the assurance of security in vehicular data *** the security risks and challenges inherent in data aggregation within VANETs,this paper introduces a blockchain-based scheme for secure and anonymous data *** proposed scheme integrates cloud computing with blockchain technology,presenting a novel blockchain-based data aggregation system that robustly supports efficient and secure data collection in *** key escrow resilience mechanisms,the solution ensures the security of system keys,preventing the security problems caused by keys generated by third parties alone in the ***,through secondary data aggregation,fine-grained data aggregation is achieved,providing effective support for cloud services in *** effectiveness of the proposed scheme is confirmed through security analysis and performance evaluations,demonstrating superior computational and communication efficiency compared existing alternatives.

关键词： Vehicular ad hoc networks Data aggregation Blockchain Key escrow resilience Anonymity

Effects of operating conditions on iron(hydr)oxides evolution and ciprofloxacin degradation in potassium ferrate-ozone stepwise oxidation system

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Journal of Environmental Sciences 2024年第1期135卷 367-378页

作者： Xiaochen Li Yifan Wang ning Wang Mei Li Maomao Bai Jingtao xu Hongbo Wang School of Municipal and Environmental Engineering Shandong Jianzhu UniversityJinan 250101China Resources and Environment Innovation Institute Shandong Jianzhu UniversityJinan 250101China

In this study,a stepwise oxidation system of potassium ferrate(K_(2)FeO_(4))combined with ozone(O+3)was used to degrade ciprofloxacin(CIP).The effects of pH and pre-oxidation time of K_(2)FeO_(4) on the evolution of K_(2)FeO_(4) reduction products(iron(hydr)oxides)and CIP degradation were *** was found that in addition to its own oxidation capacity,K_(2)FeO_(4) can also influence the treatment effect of CIP by changing the catalyst *** presence of iron(hydr)oxides effectively enhanced the mineralization rate of CIP by catalyzing *** pH value can influence the content and types of the components with catalytic ozonation effect in iron(hydr)*** K_(2)FeO_(4) pre-oxidation stage can produce more iron(hydr)oxides with catalytic components for subsequent ozonation,but the evolution of iron(hydr)oxides components was influenced by O_(3) *** can also avoid the waste of oxidation capacity owing to the oxidation of iron(hydr)oxides by O_(3) and free *** intermediate degradation products were identified by Fourier transform ion cyclotron resonance mass spectrometry(FT-ICR-MS).Besides,the degradation pathways were *** the degradation products of CIP,the product with broken quinolone ring structure only appeared in the stepwise oxidation system.

关键词： Potassium ferrate reduction products Catalytic ozonation Ciprofloxacin Potassium ferrate pre-oxidation time

Electrospun nanofibrous membranes with antimicrobial activity for air filtration

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Chinese Chemical Letters 2024年第10期35卷 147-157页

作者： Guangyao Wang Zhitong xu Ye Qi Yueguang Fang Guiling ning Junwei Ye State Key Laboratory of Fine Chemicals and School of Chemical Engineering Dalian University of TechnologyDalian 116012China Engineering Laboratory of Boric and Magnesic Functional Material Preparative and Applied Technology Dalian 116024China

Air pollution,including airborne pathogens and particulate matter(PM),has become a prominent issue affecting human health and *** air filtration materials do not meet the requirements for efficient PM capture or do not instantly kill pathogens,leading to increased risk of direct/indirect contact transmission and infection due to the accumulation of pathogens during *** nanofibrous membranes have emerged as a promising platform due to their rich porous structure,finer fiber diameters,good internal connectivity,and the ability to easily incorporate active chemicals for antimicrobial *** this review,antimicrobial mechanisms of nanofibrous membranes for air filtration and PM capture mechanisms of nanofibers were firstly investigated,and various types of electrospun nanofibrous membranes with different antimicrobial agents for efficient air filtration were described in detail,including organic antimicrobial agents,inorganic antimicrobial agents and metal-organic *** hope this work could provide a better practical insight for designing novel electrospun nanofibrous membranes with antimicrobial efficacy for efficient air filtration.

关键词： Electrospinning Nanofibrous membrane Antimicrobial Particulate matter Airfiltration

金皮猪肉质相关组织学特征与CAST基因HinfI多态性的关系研究

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分子细胞生物学报 2007年第5期40卷 295-300页

作者：吴旧生徐宁迎浙江大学动物科学学院杭州310029

本实验选择具有优良肉质的本地金华猪与肉质较差的引进品种皮特兰猪杂交所产的金皮F_2代为研究对象,利用PCR-RFLP的方法检测金皮F_2代猪CAST基因型的频率,并以肌球蛋白重链(MHC)免疫组织化学、过碘酸希夫反应和苏木精-伊红等多种组织学... 详细信息

本实验选择具有优良肉质的本地金华猪与肉质较差的引进品种皮特兰猪杂交所产的金皮F_2代为研究对象,利用PCR-RFLP的方法检测金皮F_2代猪CAST基因型的频率,并以肌球蛋白重链(MHC)免疫组织化学、过碘酸希夫反应和苏木精-伊红等多种组织学方法,研究猪背腰最长肌的肌肉组织学特性。并对其进行图像分析,在此基础上采用SAS分析其相互关系。结果发现,PAS染色后肌纤维可区分为三种类型。PAS阴性(Ⅰ)、PAS反应强阳性(Ⅱ-a)和PAS反应强度中间型(Ⅱ-b)。利用肌球蛋白重链单克隆抗体MHCs和MHCf染色结果表明,金皮F2代杂交猪背腰最长肌MHCs阳性(慢肌)纤维的比例为7.62%,快肌纤维为92.38%。CAST基因的扩增产物具有524bp和632bp两个HinfI多态性片段,定义等位基因为A(114+192+400+632bp),B(114+192+400+524bp)。AA、BB和AB基因型频率分别为0.1795、0.5897和0.2308,A和B的基因型频率分别为0.4743和0.5256。AA、BB和AB单型对眼肌面积,系水率、pH值、导电率等参数均无显著的影响。CAST基因的HinfI多态性对肌纤维的轴比有显著影响,AA单型有产生较多轴比较大(近似椭圆形)肌纤维的倾向,而BB则控制形成更多的轴比更小(近似于圆形)的肌纤维。具有AA单型的个体具有更多的肌间结缔组织,而具有BB单型的个体的肌间结缔组织较少,AB单型的个体介于两者之间。

关键词： CAST基因 RFLP 肌纤维

Modeling method for SSC prediction in pomelo using Vis-NIRS with wavelength selection and latent variable updating

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International Journal of Agricultural and Biological Engineering 2024年第1期17卷 251-260页

作者： Hao Tian Shuai Wang Huirong xu Yibin ying College of Biosystems Engineering and Food Science Zhejiang UniversityHangzhou 310058China Key Laboratory of On-Site Processing Equipment for Agricultural Products Ministry of Agriculture and Rural AffairsHangzhou 310058China College of Food Science Shihezi UniversityShihezi 832003XinjiangChina

The aim of this study was in-line,rapid,and non-destructive detection for soluble solid content(SSC)in pomelos using visible and near-infrared spectroscopy(Vis-NIRS).However,the large size and thick rind of pomelo affect the stability of spectral acquisition and the biological variabilities affect the robustness of *** these issues,in this study,an efficient prototype in-line detection system in transmittance mode was designed and evaluated in comparison with an off-line detection *** from the years 2019 and 2020 were used for modeling and the external validation data were obtained by the inline detection system in *** wavelength selection methods of changeable size moving window(CSMW),random frog(RF),and competitive adaptive reweighted sampling(CARS)were used to improve the prediction accuracy of partial least squares regression(PLSR)*** best performance of internal prediction was obtained by CARS-PLSR and the determination coefficient of prediction(),root mean square error of prediction(RMSEP),and residual predictive deviation(RPD)were 0.958,0.204%,and 4.821,***,all models obtained large prediction biases in external *** latent variable updating(LVU)method was proposed to update models and improve the performance in external *** samples from the external validation set were randomly selected to update the *** with the recalibration method,LVU could effectively modify the original models which matched the SSC range of the external validation *** CSMW-PLSR models were more robust in external *** off-line model with LVU performed best with a root mean square error of validation(RMSEV)of 0.599%and the in-line model with recalibration obtained RMSEV of 0.864%.These results demonstrated the application potential of the transmittance Vis-NIRS for in-line rapid prediction of SSC in pomelos and the modeling and updating methods could be applied to samples with biological variabi

关键词： Vis-NIRS in-line detection external validation wavelength selection model updating pomelo SSC

Production traits and fertility of reciprocal hybrids between Argopecten irradians irradians and ***

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Journal of Oceanology and Limnology 2024年第1期42卷 304-315页

作者： Jinjing WANG Junhao ning Xia LU Min CHEN Guilong LIU Xin xu Quanchao WANG He xu Chunde WANG Research and Development Center for Efficient Utilization of Coastal Bioresources Yantai Institute of Coastal Zone ResearchChinese Academy of SciencesYantai 264003China College of Marine Science and Engineering Qingdao Agricultural UniversityQingdao 266109China University of Chinese Academy of Sciences Beijing 100049China Yantai Spring-Sea AquaSeed Co. Ltd.Yantai 264006China Jiangsu Baoyuan Biotechnology Co. Ltd.Lianyungang 222144China Jiangsu Haitai MariTech Co. Ltd.Lianyungang 222144China

The two bay scallop subspecies,Argopecten irradians irradians(NN)and ***(SS),are fast growing and major cultured bivalves in ***,their relatively small sizes and decreasing production traits caused by long-term inbreeding have been major concerns to the industry in the last two *** between the two bay scallop subspecies may provide a new approach to breed a new variety with superior production traits for the *** this end,in this study,we hybridized the two bay scallop subspecies in order to obtain a new strain that incorporates the genes of both *** significant difference was found in fertilization rate,hatching rate and metamorphosis rate between the purebred and crossbred cohorts(NN♀×SS♂,denoted as NS;SS♀×NN♂,denoted as SN).Both mating strategy(***-population crosses)and egg origin had significant effects on growth and survival at the larval *** was observed in the crossbred and was more pronounced in older *** diversity of the reciprocal hybrids,especially that of SN,was increased compared with the purebred *** all hybrids were completely fertile and able to reproduce by selffertilization or by backcrossing with either ***,male sterile individuals whose gonads were fully occupied by the ovary part at mature stage were found in the hybrids for the first *** hybrids,especially SN,may provide precious germplasm resources for the production of ternary hybrids with the Peruvian scallop,***.

关键词： bay scallop hybridization growth survival heterosis fertility ternary hybrids

Chromosome-level assembly of triploid genome of Sichuan pepper(Zanthoxylum armatum)

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Horticultural Plant Journal 2024年第2期10卷 437-449页

作者： Lizhi Song Yue Huang Hao Zuo ning Tang Zhengguo Li Wenbiao Jiao Feng xu Qiang xu Zexiong Chen National Key Laboratory for Germplasm Innovation and Utilization for Fruit and Vegetable Horticultural Crops Huazhong Agricultural UniversityWuhanHubei 430070China Chongqing Key Laboratory of Economic Plant Biotechnology Chongqing University of Arts and SciencesChongqing 402160China School of Life Sciences Chongqing UniversityChongqing 400030China College of Horticulture and Gardening Yangtze UniversityJingzhouHubei 434025China College of Informatics Huazhong Agricultural UniversityWuhanHubei 430070China

As an important spice species in Rutaceae, the Sichuan pepper (Zanthoxylum armatum) can provide pungent and numbing taste, as well as aroma in its mature fruit. Here we assembled a chromosome-level genome of green prickly ash which was widely cultivated in a major production area including Chongqing and Sichuan province, China. We generated 712 Gb (~112×) PacBio long reads and 511 Gb (~82×) Hi-C data, and yielded an assembly of 99 pseudochromosomes with total size of 5.32 Gb and contig N50 of 796 kb. The genomic analyses and cytogenetic experiments both indicated that the cultivarZhuye Huajiao’ was a triploid. We identified a Zanthoxylum-specific whole genome duplication event emerging about 24.8 million years ago (Mya). We also detected a transposition burst event (0.3-0.4 Mya) responsible for the large genome size of Z. armatum. Metabolomic analysis of the Zanthoxylum fruits during development stages revealed profiles of39 volatile aroma compounds and 528 secondary metabolites, from which six types of sanshools were identified. Based on metabolomic and transcriptomic network analysis, we screened candidate genes encoding long chain acyl-CoA synthetase, fatty acid desaturase,branched-chain amino acid aminotransferase involved in sanshool biosynthesis and three genes encoding terpene synthase during fruit development. The multi-omics data provide insights into the evolution of Zanthoxylum and molecular basis of numbing and aroma flavor of Sichuan pepper.

关键词： Zanthoxylum armatum Genome Sanshool Terpenoid