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Optimized air-ground data fusion method for mine slope modeling

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Journal of Mountain Science 2024年第6期21卷 2130-2139页

作者： LIU dan HUANG Man TAO Zhigang HONG Chenjie wu Yuewei FAN En YANG Fei State Key Laboratory for Tunnel Engineering China University of Mining and Technology(Beijing)Beijing 100083China Department of Civil Engineering Shaoxing UniversityShaoxing 312000China Department of Computer Science and Engineering Shaoxing UniversityShaoxing 312000China

Refined 3D modeling of mine slopes is pivotal for precise prediction of geological *** at the inadequacy of existing single modeling methods in comprehensively representing the overall and localized characteristics of mining slopes,this study introduces a new method that fuses model data from Unmanned aerial vehicles(UAV)tilt photogrammetry and 3D laser scanning through a data alignment algorithm based on control ***,the mini batch K-Medoids algorithm is utilized to cluster the point cloud data from ground 3D laser ***,the elbow rule is applied to determine the optimal cluster number(K0),and the feature points are ***,the nearest neighbor point algorithm is employed to match the feature points obtained from UAV tilt photogrammetry,and the internal point coordinates are adjusted through the distanceweighted average to construct a 3D ***,by integrating an engineering case study,the K0 value is determined to be 8,with a matching accuracy between the two model datasets ranging from 0.0669 to 1.0373 ***,compared with the modeling method utilizing K-medoids clustering algorithm,the new modeling method significantly enhances the computational efficiency,the accuracy of selecting the optimal number of feature points in 3D laser scanning,and the precision of the 3D model derived from UAV tilt *** method provides a research foundation for constructing mine slope model.

关键词： Air-ground data fusion method Mini batch K-Medoids algorithm Ebow rule Optimal cluster number 3D laser scanning UAV tilt photogrammetry

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基于异质策略消费者的销售商两阶段订货模型

控制与决策 2017年第8期32卷 1439-1448页

作者：王丹丹吴和成南京航空航天大学经济与管理学院南京211100

采用基于目标客户群定位的两阶段决策方法,研究策略消费者异质情形下的销售商订货模型.假设策略消费者对产品的估价为随机变量,通过对模型的逆向求解和仿真得出:1)消费者平均支付意愿的大小影响销售商定位的目标客户群的范围;2)随着消... 详细信息

采用基于目标客户群定位的两阶段决策方法,研究策略消费者异质情形下的销售商订货模型.假设策略消费者对产品的估价为随机变量,通过对模型的逆向求解和仿真得出:1)消费者平均支付意愿的大小影响销售商定位的目标客户群的范围;2)随着消费者平均支付意愿、产品清仓价格的提高以及消费者异质程度、产品成本的降低,销售商会将更多的消费者定位为目标客户;3)当消费者平均支付意愿较低或异质程度较大时,销售商可以获得比消费者同质情形更高的利润,消费者的异质性有利于销售商.

关键词：异质策略消费者两阶段决策目标客户群定位支付意愿订货模型

An arch-shape wood evaporator decorated by metal-organic framework for solar interface evaporation

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Nano Research 2024年第7期17卷 6661-6672页

作者： Tiantian wu Liming Zhao Yaning Xu Ziwei Cui Lixing Kang Yahui Cai Zupeng Chen dan Tian Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China Key Laboratory of Multifunctional Nanomaterials and Smart Systems Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037China

To achieve sustainable desalination and water purification,solar interface evaporation technology is an effective means due to its high energy *** photothermal conversion materials and surface design are crucial for the interfacial solar evaporation *** to design water transport routes and thermal insulating layers simultaneously is one of the major challenges to solar interface evaporation technology ***,this work reports an arch-shaped wood evaporator(pine@carbon black(CB)-metal-organic framework-801(MOF-801)-36%)for efficient,fast and continuous interfacial solar evaporation,which is composed of an arch-shaped wood substrate,MOF-801,and CB as a light absorption *** archshaped structure has a double-sided evaporation effect,which has a synergistic effect on augmenting solar evaporation *** addition,the in-situ growth of MOF-801 in pretreated wood microchannels renders the wood evaporator a significant function of reducing the equivalent enthalpy of evaporation due to the reduction of the hydrogen bonding density of water molecules as they pass through the wood *** best evaporation rate of the arch-shaped wood evaporator can reach 2.535 kg·m^(−2)·h^(−1),and the efficiency reaches 93.7%under the irradiation of 1 sun ***,it could be used for desalination and wastewater treatment to collect fresh water that meets drinking requirements set by the World Health Organization(WHO).This integrated evaporator provides an efficient way for commercial portable photothermal conversion and new ideas for advanced solar-driven water treatment technology.

关键词： arch-shaped solar evaporation wood metal-organic frameworks(MOFs) double-sided evaporation

Metal–ligand interfaces for well-defined gold nanoclusters

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Science China Chemistry 2024年第3期67卷 806-823页

作者： dan Yang Yating wu Zhaotong Yuan Chunmei Zhou Yihu Dai Xiaoyue Wan Yan Zhu Yanhui Yang Institute of Advanced Synthesis School of Chemistry and Molecular EngineeringNanjing Tech UniversityNanjing 211816China School of Chemistry and Chemical Engineering Nanjing UniversityNanjing 210093China College of Material and Chemical Engineering Minjiang UniversityFuzhou 350108China

Ligand engineering for well-defined gold nanoclusters(Au NCs) is getting more extensive attention. Organizing the Au-ligand interfaces on gold NCs can achieve the structural and functional control. This review focuses on the Au-ligand interfaces including gold-phosphorus(Au-P), gold-sulfur(Au-S), gold-selenium(Au-Se), gold-carbon(Au-C), and gold-nitrogen(Au-N), derived from the bonding between Au atoms and the different ligands(e.g., organic phosphine, thiolate, selenolate, alkynyl,n-heterocyclic carbene and nitrogenous ligands). The formation mechanism of Au-ligand interfaces is well discussed. In addition, the effects of Au-ligand interfaces on the stability, optical property, and catalysis are also presented. We hope the advances in this research area can boost the development of Au NC sciences.

关键词： Au nanoclusters well-defined structures metal–ligand interfaces formation mechanism structure–property correlation

Improvement of the piezoelectricity of PVDF-HFP by CoFe_(2)O_(4)nanoparticles

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Nano Materials Science 2024年第2期6卷 201-210页

作者： dan Lei Ning Hu Liangke wu Alamusi Huiming Ning Yang Wang Zhaonan Jin Yaolu Liu College of Aerospace Engineering Chongqing UniversityChongqing400044China State Key Laboratory of Reliability and Intelligence Electrical Equipment School of Mechanical EngineeringHebei University of TechnologyTianjin300401China

High piezoelectric composite films composed of poly(vinylidene fluoride-co-hexafluoropropylene)(PVDF-HFP)and ferromagnetic cobalt ferrite(CoFe_(2)O_(4))(0.00 wt%to 0.2 wt%)are prepared by a solution casting method accompanied by uniaxial stretching and high electric field *** decisive effect of the poling electric field on the power generating capability was confirmed by the *** pure PVDF-HFP films,when the maximum electric field Emax is 120 MV/m,the calibrated open circuit voltage reaches 2.93 V,which is much higher than those poled at lower electric fields(70 MV/m:1.41 V;90 MV/m:2.11 V).Furthermore,the addition of CoFe_(2)O_(4)also influences the piezoelectricity *** the samples containing 0.15 wt%CoFe_(2)O_(4),the calibrated open circuit voltage increases to the maximum value of 3.57 ***,the relative fraction of theβ-phase and the crystallinity degree are 99%and 48%,*** effects of CoFe_(2)O_(4)nanoparticles on initial crystallization,uniaxial stretching and high electric field poling are investigated by XRD,FTIR and DSC.

关键词： PVDF-HFP CoFe_(2)O_(4)nanoparticles Piezoelectricity Nanocomposite

A bifunctional wood membrane modified by MoS_(2)/covalent organic framework heterojunctions for effective solar-driven water evaporation and contaminant degradation

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Science China Chemistry 2024年第6期67卷 2111-2120页

作者： Ziwei Cui Jianfei wu Haoran Li Yaning Xu Tiantian wu Lixing Kang Qing Huang Yahui Cai Jianzhang Li dan Tian Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing210037China Key Laboratory of Multifunctional Nanomaterials and Smart Systems Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou215123China State Key Laboratory of Efficient Production of Forest Resources Beijing Forestry UniversityBeijing100083China

Interfacial solar evaporation technology is considered one of the most promising strategies for alleviating the scarcity of freshwater ***,solar-driven evaporation technology cannot eliminate the pollutants in the residual *** solve this problem,we have prepared a two-in-one solar-driven evaporation/photocatalysis system by decorating MoS_(2)/covalent organic framework(COF)heterojunctions on wood(MoS_(2)/COF-wood).Thanks to the unique porous structure of wood,it provides a strong guarantee for water transport and vapor release during the evaporation *** introduction of MoS_(2) and COFs can promote the breaking of hydrogen bonds between water molecules,which leads to a significant decrease in the enthalpy of evaporation,achieving a water evaporation rate as high as 2.17 kg m^(-2)h^(-1)under 1 sun ***,the resulting MoS_(2)/COF-wood exhibits good salt resistance and *** addition,the heterojunctions formed between COFs and MoS_(2) can effectively inhibit charge carrier complexation and improve the photocatalytic degradation ability of pollutants(over 99%).This study highlights the construction strategy of bifunctional wood-based materials for freshwater production and wastewater remediation.

关键词： covalent organic framework MoS_(2) wood photocatalysis solar-driven evaporation

Is endoscopic retrograde appendicitis therapy a better modality for acute uncomplicated appendicitis? A systematic review and metaanalysis

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World Journal of Clinical Cases 2021年第33期9卷 10208-10221页

作者： Ying Wang Chen-Yu Sun Jie Liu Yue Chen Chandur Bhan John Pocholo Whitaker Tuason Sudha Misra Yu-Ting Huang Shao-Di Ma Xing-Yu Cheng Qin Zhou Wen-Chao Gu dan-dan wu Xia Chen Department of Endoscopy Center The First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230001Anhui ProvinceChina Internal Medicine AMITA Health Saint Joseph Hospital ChicagoChicagoIL 60657United States Department of Gastroenterology The First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230001Anhui ProvinceChina Department of Clinical Medicine School of the First Clinical MedicineAnhui Medical UniversityHefei 230032Anhui ProvinceChina University of Maryland Medical Center Midtown Campus BaltimoreMD 21201United States Department of Epidemiology and Health Statistics School of Public Health Anhui Medical UniversityHefei 230032Anhui ProvinceChina Department of Radiation Oncology Mayo ClinicRochesterMN 55905United States Department of Diagnostic Radiology and Nuclear Medicine Gunma University Graduate School of MedicineMaebashi 371-8511Japan Department of Nursing The First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230001Anhui ProvinceChina

BACKGROUND Previous studies had shown endoscopic retrograde appendicitis therapy(ERAT)is an effective treatment for acute ***,different studies reported conflicting outcomes regarding the effectiveness of ERAT in comparison with laparoscopic appendectomy(LA).AIM To compare the effectiveness of ERAT with *** Randomized controlled trials(RCTs)and retrospective studies of ERAT for acute uncomplicated appendicitis were searched in PubMed,Cochrane Library,Web of Science,Embase database,China National Knowledge Infrastructure(CNKI),the WanFang Database,and Chinese Scientific Journals Database(VIP)from the establishment date to March *** was assessed using the Isquared *** odds ratios(OR),weighted mean difference(WMD),and standard mean difference(SMD),with 95%confidence intervals(CI)were calculated through either fixed-effects or random-effects *** analysis was also *** bias was tested by Egger's test,and Begg’s *** quality of included RCT were evaluated by the Jadad scale,while Newcastle-Ottawa scale is adopted for assessing the methodological quality of case-control *** statistical analysis was performed using Stata 15.1 statistical *** statistical analysis was performed using Stata 15.1 statistical *** study is registered with PROSPERO,*** After screening,10 RCTs and 2 case-control studies were included in the current systematic ***,the length of hospitalizations[WMD=-1.15,95%CI:-1.99,-0.31;P=0.007]was shorter than LA ***,the level of postoperative CRP[WMD=-10.06,95%CI:(-17.39,-2.73);P=0.007],TNF-α[WMD=-7.70,95%CI:(-8.47,-6.93);P<0.001],and IL-6 Levels[WMD=-9.78,95%CI:(-10.69,-8.88);P<0.001;P<0.001]in ERAT group was significantly lower than LA ***,ERAT group had a lower incidence of intestinal obstruction than LA group.[OR=0.19,95%CI:(0.05,0.79);P=0.020].Moreover,the quality of 10 RCTs were low with 0-3 J

关键词： Endoscopic retrograde appendicitis therapy Acute appendicitis Meta analysis Laparoscopic appendectomy Randomized controlled study

How incubation temperature affects hatchling performance in reptiles: an integrative insight based on plasticity in metabolic enzyme

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Current Zoology 2024年第2期70卷 195-203页

作者： dan-Yang wu Xing-Zhi Han Teng Li Bao-Jun Sun Xiao-Yan Qin College of Life and Environment Sciences Minzu University of ChinaBeijing 100081China Key Laboratory of Animal Ecology and Conservational Biology Institute of ZoologyChinese Academy of SciencesBeijing 10011China College of Wildlife and Protected Area Northeast Forestry UniversityHarbin 150040China College of Resources and Environmental Sciences Nanjing Agricultural UniversityNanjing 210095China

Evaluating the effects of temperature variations on animals plays an important role in understanding the threat of climate *** effects of developmental temperature on offspring performance are critical in evaluating the effects of warming temperatures on the fitness of ovipa-rous species,but the physiological and biochemical basis of this developmental plasticity is largely *** this study,we incubated eggs of the turtle Pelodiscus sinensis at low(24℃),medium(28℃),and high(32℃)temperatures,and evaluated the effects of developmental temperature on offspring fitness,and metabolic enzymes in the neck and limb muscles of *** hatchlings from eggs incubated at the medium temperature showed better fitness-related performance(righting response and swimming capacity)and higher activities of metabolic enzymes(hexokinase,HK;lactate dehydrogenase,LDH)than hatchlings from the eggs incubated at high or low *** addition,the swimming speed and righting response were significantly correlated with the HK activities in limb(swimming speed)and neck(righting response)muscles,suggesting that the developmental plasticity of energy metabolic pathway might play a role in determining the way incubation temperature affects offspring *** the fitness-related performance and the activities of metabolic enzymes,we predict that the P sinensis from high latitude would not face the detrimental effects of climate warming until the average nest temperatures reach 32℃.

关键词： developmental plasticity energetic metabolism enzyme activity hatchling turtle.

3D-printed MoS_(2)/Ni electrodes with excellent electro-catalytic performance and long-term stability for dechlorination of florfenicol

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Journal of Environmental Sciences 2024年第3期137卷 420-431页

作者： Jianhui Xu Pengxu Wang Shenggui Chen Lei Li dan Li Yunfei Zhang Qi wu Jinhong Fan LumingMa School of Environment and Civil Engineering Dongguan University of TechnologyDongguan 523808China School of Art and Design Guangzhou Panyu PolytechnicGuangzhou 511483China National Engineering Research Center for Urban Pollution Control State Key Laboratory of Pollution Control and Resources ReuseCollege of Environmental Science and EngineeringTongji UniversityShanghai 200092China Dongguan Institute of Science and Technology Innovation Dongguan University of TechnologyDongguan 523808China School of Mechanical Engineering Dongguan University of TechnologyDongguan 523808China

Here,we report the production of 3D-printed MoS_(2)/Ni electrodes(3D-MoS_(2)/Ni)with longterm stability and excellent performance by the selective laser melting(SLM)*** a cathode,the obtained 3D-MoS_(2)/Ni could maintain a degradation rate above 94.0%for forfenicol(FLO)when repeatedly used 50 times in *** also found that the removal rate of FLO by 3D-MoS_(2)/Ni was about 12 times higher than that of 3D-printed pure Ni(3D-Ni),attributed to the improved accessibility of H^(*).In addition,the electrochemical characterization results showed that the electrochemically active surface area of the 3D-MoS_(2)/Ni electrode is about 3-fold higher than that of the 3D-Ni electrode while the electrical resistance is 4 times *** on tert-butanol suppression,electron paramagnetic resonance and triple quadrupole mass spectrometer experiments,a“dual path”mechanism and possible degradation pathway for the dechlorination of FLO by 3D-MoS_(2)/Ni were ***,we also investigated the impacts of the cathode potential and the initial pH of the solution on the degradation of ***,this study reveals that the SLM 3D printing technique is a promising approach for the rapid fabrication of high-stability metal electrodes,which could have broad application in the control of water contaminants in the environmental field.

关键词： 3D-print Electroreduction MoS_(2)/Ni Antibiotic Florfenicol