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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

Safer solid-state lithium metal batteries:Mechanisms and strategies

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InfoMat 2024年第2期6卷 1-27页

作者： Shi-Jie Yang jiang-Kui Hu feng-Ni jiang Hong Yuan Ho Seok Park Jia-Qi Huang School of Materials Science&Engineering Beijing Institute of TechnologyBeijingthe People's Republic of China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijingthe People's Republic of China College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuanShanxithe People's Republic of China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijingthe People's Republic of China Center for Next-Generation Energy Materials and School of Chemical Engineering Sungkyunkwan UniversitySuwonRepublic of Korea

Solid-state batteries that employ solid-state electrolytes(SSEs)to replace routine liquid electrolytes are considered to be one of the most promising solutions for achieving high-safety lithium metal *** with high mechanical modulus,thermal stability,and non-flammability can not only inhibit the growth of lithium dendrites but also enhance the safety of lithium metal ***,several internal materials/electrodes-related thermal hazards demonstrated by recent works show that solid-state lithium metal batteries(SSLMBs)are not ***,understanding the potential thermal hazards of SSLMBs is critical for their more secure and widespread *** this contribution,we provide a comprehensive overview of the thermal failure mechanism of SSLMBs from materials to ***,strategies to improve the thermal safety performance of SSLMBs are included from the view of material enhancement,battery design,and external ***,the future directions are further *** hope that this work can shed bright insights into the path of constructing energy storage devices with high energy density and safety.

关键词： lithium metal batteries safety improvements solid-state batteries thermal failures thermal runaway

Supramolecular phenolic network-engineered C-CeO_(2) nanofibers for simultaneous determination of isoniazid and hydrazine in biological fluids

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Chinese Chemical Letters 2024年第6期35卷 496-501页

作者： Gang Lang Jing feng Bo feng Junlan Hu Zhiling Ran Zhiting Zhou Zhenju jiang Yunxiang He Junling Guo School of Science Xihua UniversityChengdu 610039China BMI Center for Biomass Materials and Nanointerfaces College of Biomass Science and EngineeringSichuan UniversityChengdu 610065China Southwest Computer Co. Ltd.Chongqing 400060China Bioproducts Institute Department of Chemical and Biological EngineeringThe University of British ColumbiaVancouver V6T 1Z4Canada State Key Laboratory of Polymer Materials Engineering Sichuan UniversityChengdu 610065China National Engineering Laboratory for Clean Technology of Leather Manufacture Sichuan University Chengdu 610065China

Electrochemical sensing provides a powerful technological means for the therapeutic drug monitoring of drug-resistant tuberculosis but requires a functionalized electrode to capture the analytes and catalyze their redox ***,we construct a nickel-tannic acid supramolecular network(Ni-TA)on the surface of electrospun-derived C-CeO_(2) nanofiber for the sensitive and simultaneous detection of isoniazid(INZ)and hydrazine(HYD).Mechanistic investigations demonstrate that Ni-TA is electronegative and hydrophilic,thus facilitating an efficient mass and electron ***-TA/C-CeO_(2) has higher adsorption rate constants(0.091 g mg^(-1)h^(-1)for INZ,and 0.062 g mg^(-1)h^(-1)for HYD)than native C-CeO_(2)(0.075 g mg^(-1)h^(-1)for INZ,and 0.047 g mg^(-1)h^(-1)for HYD).Moreover,Ni-TA/C-CeO_(2)(56Ω)has lower charge transfer resistances than C-CeO_(2)(417Ω).Ni-TA/C-CeO_(2) performs low detection limits and wide linearity ranges for INZ(0.012μmol/L and 0.1-400μmol/L,respectively)and HYD(0.008μmol/L and 0.015-1420μmol/L,respectively),coupled with high selectivity,cycle stability and *** research demonstrated the promising applications of Ni-TA/C-CeO_(2) by analyzing human-collected plasma and urine samples.

关键词： Electrochemical detection Therapeutic drug monitoring Isoniazid Hydrazine Tuberculosis

Thermoelectric transport properties of p-type Bi_(2)Se_(3)-Sb_(2)Se_(3)-In_(2)Se_(3) high entropy compounds

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Rare Metals 2024年第7期43卷 3415-3421页

作者： feng jiang Cheng-Liang Xia Yong-Bin Zhu Jun Li Yue Chen Wei-Shu Liu Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Department of Mechanical Engineering The University of Hong KongHong Kong 999077China Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices Southern University of Science and TechnologyShenzhen 518055China

The introduction of entropy concept into thermoelectric materials recently has attracted broad ***,we showed the phase diagram of the ternary systems of Bi_(2)Se_(3)-Sb_(2)Se_(3)-In_(2)Se_(3).Among the high entropy compounds (HECs),we have identified an intrinsic p-type region near our previously reported Bi_(0.8)Sb_(0.8)In_(0.4)Se_3 in the phase diagram.

关键词： entropy (3) compounds

Mechanism of local solidification time variations with melt rate during vacuum arc remelting process of 8Cr4Mo4V high-strength steel

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Journal of Iron and Steel Research(International) 2024年第2期31卷 377-388页

作者： Tao Pan Hong-chun Zhu Zhou-hua jiang Hua-bing Li Rui Zhang Hao feng School of Metallurgy Northeastern UniversityShenyang110819LiaoningChina State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang110819LiaoningChina

A 2D axisymmetric numerical model was established to investigate the variations of molten pool with different melt rates during the vacuum arc remelting of 8Cr4Mo4V high-strength steel,and the ingot growth was simulated by dynamic mesh *** results show that as the ingot grows,the molten pool profile changes from shallow and flat to V-shaped,and both the molten pool depth and the mushy width ***,the variation of both the molten pool shape and the mushy width melt rate is clarified by the thermal equilibrium *** melt rate increases,both the molten pool depth and the mushy width *** is caused by the increment in sensible heat stored in the ingot due to the limitation of the cooling capacity of the *** nonlinear increment in sensible heat leads to a nonlinear increase in the mushy *** addition,as melt rate increases,the local solidification time(LST)of ingot decreases obviously at first and then *** melt rate is controlled in a suitable range,LST is the lowest and the secondary dendrite arm spacing of the ingot is the smallest,which can effectively improve the compactness degree of 8Cr4Mo4V high-strength steel.

关键词： 8Cr4Mo4V high-strength steel Vacuum arc remelting process Melt rate Molten pool Local solidification time

Physically modulated phytoplankton production and export at submesoscales in the oligotrophic South China Sea Basin

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Science China Earth Sciences 2024年第8期67卷 2681-2698页

作者： Zhonghua ZHAO Mengdi XU Bangqin HUANG Wenfang LU Hongshuai QI feng CAI Yuwu jiang State Key Laboratory of Marine Environmental Science Xiamen UniversityXiamen 361102China College of Ocean and Earth Sciences Xiamen UniversityXiamen 361102China Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies Xiamen UniversityXiamen 361102China National Observation and Research Station for the Taiwan Strait Marine Ecosystem Xiamen UniversityXiamen 361102China School of Marine Sciences Sun Yat-Sen UniversitySouthern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519000China Laboratory of Ocean and Coast Geology Third Institute of OceanographyMinistry of Natural ResourcesXiamen 361005China

Oceanic submesoscales can significantly influence phytoplankton production and export owing to their similar timescales of *** on two-year Biogeochemical Argo(BGC-Argo) observations,this study investigated the development of submesoscale instabilities,particularly symmetric and mixed-layer baroclinic instabilities,and their impacts on biological production and export in the oligotrophic South China Sea *** the northern basin,near-surface winter blooms consistently cooccurred with seasonally deepened mixed ***,significantly stronger and weaker winter blooms were observed over two consecutive winters within the BGC-Argo observation *** the first winter,symmetric-instability-induced upward nutrient entrainment played a crucial role in initiating the strong winter bloom in early December,when the mixed layer was approximately 20–30 m shallower than the *** bloom occurred approximately 20–30 days earlier than that anticipated owing to the contact between the seasonally deepened mixed layer and mesoscale-cyclone-induced uplifted *** symmetric instability also facilitated the export of fixed phytoplankton carbon from the surface to deeper ***,during the second winter,remarkably intense mixed-layer baroclinic instability associated with an intense mesoscale anticyclone led to more significant shoaling of the mixed layer compared to the nutricline,thus increasing the vertical distance between the two *** this condition,upward nutrient injection,phytoplankton bloom,and carbon export were *** contrast,the BGC-Argo float in the central basin revealed significantly inhibited seasonality of phytoplankton biomass and submesoscale instabilities compared to those in the northern basin,primarily owing to the significantly shallower winter mixed layer.

关键词： Submesoscale instability Phytoplankton Nutrient transport BGC-Argo South China Sea

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Implications of left atrial volume index in patients with three-vessel coronary disease:A 6.6-year follow-up cohort study

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Chinese Medical Journal 2024年第4期137卷 441-449页

作者： Ru Liu Lei Song Ce Zhang Lin jiang Jian Tian Lianjun Xu Xinxing feng Linyuan wan Xueyan Zhao Ou Xu Chongjian Li Runlin Gao Rutai Hui Wei Zhao Jinqing Yuan Department of Cardiology Fuwai HospitalChinese Academy of Medical SciencesBeijing 100037China Department of Respiratory and Pulmonary Vascular Disease Fuwai Yunnan Cardiovascular HospitalKunmingYunnan 650102China Department of Endocrinology Fuwai HospitalChinese Academy of Medical SciencesBeijing 100037China Department of Echocardiography Fuwai HospitalChinese Academy of Medical SciencesBeijing 100037China Information Center Fuwai HospitalChinese Academy of Medical SciencesBeijing 100037China

Background:Risk assessment and treatment stratification for three-vessel coronary disease(TVD)remain *** study aimed to investigate the prognostic value of left atrial volume index(LAVI)with the Synergy Between Percutaneous Coronary Intervention with Taxus and Cardiac Surgery(SYNTAX)score II,and its association with the long-term prognosis after three strategies(percutaneous coronary intervention[PCI],coronary artery bypass grafting[CABG],and medical therapy[MT])in patients with ***:This study was a post hoc analysis of a large,prospective cohort of patients with TVD in China,that aimed to determine the long-term outcomes after PCI,CABG,or optimal MT alone.A total of 8943 patients with TVD were consecutively enrolled between 2004 and 2011 at Fuwai Hospital.A total of 7818 patients with available baseline LAVI data were included in the ***,procedural,and follow-up data were *** primary endpoint was major adverse cardiac and cerebrovascular events(MACCE),which was a composite of all-cause death,myocardial infarction(MI),and *** endpoints included all-cause death,cardiac death,MI,revascularization,and ***-term outcomes were evaluated among LAVI quartile ***:During a median follow-up of 6.6 years,a higher LAVI was strongly associated with increased risk of MACCE(Q3:hazard ratio[HR]1.20,95%confidence interval[CI]1.06-1.37,P=0.005;Q4:HR 1.85,95%CI 1.64-2.09,P<0.001),all-cause death(Q3:HR 1.41,95%CI 1.17-1.69,P<0.001;Q4:HR 2.54,95%CI 2.16-3.00,P<0.001),and cardiac death(Q3:HR 1.81,95%CI 1.39-2.37,P<0.001;Q4:HR 3.47,95%CI 2.71-4.43,P<0.001).Moreover,LAVI significantly improved discrimination and reclassification of the SYNTAX score ***,there was a significant interaction between LAVI quartiles and treatment strategies for *** was associated with lower risk of MACCE than MT alone,regardless of LAVI *** patients in the fourth quartile,PCI was associated with significantly incre

关键词： Three-vessel coronary disease Left atrial volume index Coronary artery bypass grafting Percutaneous coronary intervention Myocardial ischemia Prognosis

Straw addition increases enzyme activities and microbial carbon metabolism activities in bauxite residue

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Journal of Environmental Sciences 2024年第1期135卷 332-344页

作者： Hao Wu Wei Sun feng Zhu Yifan jiang Shiwei Huang Johnvie Goloran Shengguo Xue School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China School of Metallurgy and Environment Central South UniversityChangsha 410083China School of Environment and Science Griffith UniversityBrisbaneQLD 4072Australia

Recovery of microbial functions is one of the critical processes in the nutrient cycling of bauxite residue for improving *** is considered to be effective to increase microbial diversity and drive the development of the microbial community,but its effect on microbial carbon metabolism has not been *** present study evaluated the effects of phosphogypsum(PG),straw(SF)and phosphogypsum plus straw(PGSF)on physicochemical properties,enzyme activities,and microbial carbon metabolism activities in bauxite *** 180 days incubation,PG,SF and PGSF treatment significantly reduced the residue pH from 10.85 to 8.64,9.39 and 8.06,*** to CK treatment,SF treatment significantly increased the content of total organic carbon(TOC)and organic carbon fractions(DOC,MBC,EOC,and POC).In addition,straw addition significantly increased glucosidase,cellulose,urease,and alkaline phosphatase by 7.2-9.1 times,5.8-7.1 times,11.1-12.5 times,and 1.1-2.2 times,*** Biolog results showed that straw addition significantly increased microbial metabolic activity(AWCD)and diversity in bauxite *** analysis indicated total nitrogen(TN)and carbon fractions(POC,MBC and DOC)were the most important environmental factors affecting microbial metabolic activity and diversity in bauxite *** findings provided us with a biogeochemical perspective to reveal soil formation in bauxite residue and suggested that nutrient supplement and regulation of salinity-alkalinity benefit the establishment of microbial communities and functions in bauxite residue.

关键词： Bauxite residue Labile organic carbon fractions Enzyme activities Community-level physiological profiles Soil formation in bauxite residue

The role of vitamin E in polyunsaturated fatty acid synthesis and alleviating endoplasmic reticulum stress in sub-adult grass carp(Ctenopharyngodon idella)

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Animal Nutrition 2024年第1期16卷 275-287页

作者： Ke Yao Lin feng Wei-Dan jiang Yang Liu Lu Zhang Hai-feng Mi Xiao-Qiu Zhou Pei Wu Animal Nutrition Institute Sichuan Agricultural University Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province Sichuan Agricultural University Key Laboratory of Animal Disease-Resistance Nutrition Ministry of Education Ministry of Agriculture and Rural Affairs Key Laboratory of Sichuan Province Tongwei Co. Ltd. Healthy Aquaculture Key Laboratory of Sichuan Province

Vitamin E(VE) is an essential lipid-soluble vitamin that improves the fish flesh quality. However, the underlying molecular mechanisms remain unclear. This study aimed to investigate the effects of VE on growth performance and flesh quality in sub-adult grass carp(Ctenopharyngodon idella). A total of 450fish(713.53 ± 1.50 g) were randomly divided into six treatment groups(three replicates per treatment)and fed for nine weeks with different experimental diets(dietary lipid 47.8 g/kg) that contained different levels of VE(5.44, 52.07, 96.85, 141.71, 185.66, and 230.12 mg/kg diet, supplemented as dl-a-tocopherol acetate). Notably, the treatment groups that were fed with dietary VE ranging from 52.07 to230.12 mg/kg diet showed improvement in the percent weight gain, special growth rate, and feed efficiency of grass carp. Moreover, the treatment groups supplemented with dietary VE level of 141.71,185.66, and 230.12 mg/kg diet showed enhancement in crude protein, lipid, and a-tocopherol contents in the muscle, and the dietary levels of VE ranging from 52.07 to 141.71 mg/kg diet improved muscle pH24h and shear force but reduced muscle cooking loss in grass carp. Furthermore, appropriate levels of VE(52.07 to 96.85 mg/kg diet) increased the muscle polyunsaturated fatty acid content in grass carp. Dietary VE also increased the mRNA levels of fatty acid synthesis-related genes, including fas, scd-1, fad,elovl, srebp1, pparγ, and lxra, and up-regulated the expression of SREBP-1 protein. However, dietary VE decreased the expression of fatty acid decomposition-related genes, including hsl, cpt1, acox1, and ppara,and endoplasmic reticulum stress-related genes, including perk, ire1, atf6, eif2a, atf4, xbp1, chop, and grp78, and down-regulated the expression of p-PERK, p-IRE1, ATF6, and GRP78 proteins. In conclusion,dietary VE increased muscle fatty acid synthesis, which may be partly associated with the alleviation of endoplasmic reticulum stress, and ultimately improves fish fles

关键词： Vitamin E Flesh quality Muscle polyunsaturated fatty acid level Endoplasmic reticulum stress Growth performance Grass carp