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| 1 | Soil Respiration of Biologically-Crusted Soils in Response to Simulated Precipitation Pulses in the Tengger Desert, Northern China显示文摘Soil respiration(SR) is a major process of carbon loss from dryland soils, and it is closely linked to precipitation which often occurs as a discrete episodic event. However, knowledge on the dynamic patterns of SR of biologically-crusted soils in response to precipitation pulses remains limited. In this study, we investigated CO_2 emissions from a moss-crusted soil(MCS) and a cyanobacterialichen-crusted soil(CLCS) after 2, 4, 8, 16, and 32 mm precipitation during the dry season in the Tengger Desert, northern China.Results showed that 2 h after precipitation, the SR rates of both MCS and CLCS increased up to 18-fold compared with those before rewetting, and then gradually declined to background levels; the decrease was faster at lower precipitation amount and slower at higher precipitation amount. The peak and average SR rates over the first 2 h in MCS increased with increasing precipitation amount, but did not vary in CLCS. Total CO_2 emission during the experiment(72 h) ranged from 1.35 to 5.67 g C m-2 in MCS, and from 1.11 to3.19 g Cm^(-2) in CLCS. Peak and average SR rates, as well as total carbon loss, were greater in MCS than in CLCS. Soil respiration rates of both MCS and CLCS were logarithmically correlated with gravimetric soil water content. Comparisons of SR among different precipitation events, together with the analysis of long-term precipitation data, suggest that small-size precipitation events have the potential for large short-term carbon losses, and that biological soil crusts might significantly contribute to soil CO_2 emission in the water-limited desert ecosystem. | LI Xiaojun ZHAO Yang YANG Haotian ZHANG Peng GAO Yongping | 2018 | Pedosphere2018，28，1： | 3 |
| 2 | Laser direct writing derived robust carbon nitride films with efficient photon-to-electron conversion for multifunctional photoelectrical applications显示文摘Carbon nitride,an emerging polymeric semiconductor,has attracted attention in research ranging from photocatalysis to photodetection due to its favorable visible light response and high physicochemical stability.For its practical device application,the fabrication of high-quality carbon nitride films on substrates is essential.However,conventional methodologies to achieve high polymerization of carbon nitride are often accompanied by its decomposition,significantly compromising the film quality.Herein,we report an ultrafast fabrication of carbon nitride film by laser direct writing(LDW).The instantaneous high temperature and pressure during LDW can efficiently boost the polymerization of carbon nitride and suppress its decomposition,resulting in high-quality carbon nitride film with excellent mechanical stability with the substrate.Due to the efficient photon-to-electron conversion,it exhibits an outstanding photoelectrochemical water splitting and optoelectronic detection capability,even under strong acid/alkaline conditions.This study thus offers a facile and efficient LDW strategy for the rapid fabrication of carbon nitride film photoelectrodes,demonstrating its great feasibility in multifunctional photoelectrical applications,including but not limited to photoelectrochemical water splitting and optoelectronic detection. | Haotian Tan Wenping Si Wei Peng Yuqing Wang Daolan Liu Liqun Wang Chongyun Jiang Lu Di Ji Liang Feng Hou | 2022 | Carbon Energy2022，4，6： | 1 |
| 3 | Semantic part segmentation of single-view point cloud显示文摘As a classic topic in computer graphics,the semantic part segmentation of 3D data is helpful for3D part-level editing and modeling.Single-views point cloud is the raw format of 3D data.Giving each point a semantic annotation in single-view point cloud,i.e.,single-view point cloud semantic part segmentation,is meaningful and challenging. | Haotian PENG Bin ZHOU Liyuan YIN Kan GUO Qinping ZHAO | 2020 | Science China(Information Sciences)2020，63，12： | 1 |
| 4 | Genus Tetrastigma:A review of its folk uses,phytochemistry and pharmacology显示文摘The genus Tetrastigma belongs to the Vitaceae family and contains over 100 species.This paper reviewed folk uses,chemical constituents,pharmacological activities,and clinical applications of the medicinal plants in the genus Tetrastigma.In addition,the paper also discussed the current problems for the further studies.Up to now,more than 240 compounds were reported from the genus Tetrastigma,covering 74 flavonoids,14 terpenoids,19 steroids,21 phenylpropanoids,14 alkaloids and others constituents.Among them,flavonoids are the major and the characteristic chemical constituents in this genus.Modern pharmacological studies and clinical practice showed that the extracts and chemical constituents of Tetrastigma species possessed wide pharmacological activities including antitumor,antioxidative,hepatoprotective,antiviral,anti-inflammatory,and analgesic activities.The information summarized in this paper provides valuable clues for new drug discovery and an incentive to expand the research of genus Tetrastigma. | Lizhi Zhang Bin Li Mengyun Wang Haotian Lin Yilin Peng Xudong Zhou Caiyun Peng Jixun Zhan Wei Wang | 2022 | Chinese Herbal Medicines2022，14，2： | 1 |
| 5 | Formation process and mechanical properties in selective laser melted multi-principal-element alloys显示文摘Additive manufacturing is believed to open up a new era in precise microfabrication,and the dynamic microstructure evolution during the process as well as the experiment-simulation correlated study is conducted on a prototype multi-principal-element alloys FeCrNi fabricated using selective laser melting(SLM).Experimental results reveal that columnar crystals grow across the cladding layers and the dense cellular structures develop in the filled crystal.At the micron scale,all constituent elements are evenly distributed,while at the near-atomic scale,Cr element is obviously segregated.Simulation results at the atomic scale illustrate that i)the solid-liquid interface during the grain growth changes from horizontal to arc due to the radial temperature gradient;ii)the precipitates,microscale voids,and stacking faults also form dynamically as a result of the thermal gradient,leading to the residual stress in the SLMed structure.In addition,we established a microstructure-based physical model based on atomic simulation,which indicates that strong interface strengthening exists in the tensile deformation.The present work provides an atomic-scale understanding of the microstructural evolution in the SLM process through the combination of experiment and simulation. | Jing Peng Jia Li Bin Liu Jian Wang Haotian Chen Hui Feng Xin Zeng Heng Duan Yuankui Cao Junyang He Peter K.Liaw Qihong Fang | 2023 | Journal of Materials Science & Technology2023，，2： | 0 |
| 6 | Preliminary discussion on the ignition mechanism of exploding foil initiators igniting boron potassium nitrate显示文摘Exploding foil initiator(EFI)is a kind of advanced device for initiating explosives,but its function is unstable when it comes to directly igniting pyrotechnics.To solve the problem,this research aims to reveal the ignition mechanism of EFIs directly igniting pyrotechnics.An oscilloscope,a photon Doppler velocimetry,and a plasma spectrum measurement system were employed to obtain information of electric characteristics,impact pressure,and plasma temperature.The results of the electric characteristics and the impact pressure were inconsistent with ignition results.The only thing that the ignition success tests had in common was that their plasma all had a relatively long period of high-temperature duration(HTD).It eventually concludes that the ignition mechanism in this research is the microconvection heat transfer rather than the shock initiation,which differs from that of exploding foil initiators detonating explosives.Furthermore,the methods for evaluating the ignition success of semiconductor bridge initiators are not entirely applicable to the tests mentioned in this paper.The HTD is the critical parameter for judging the ignition success,and it is influenced by two factors:the late time discharge and the energy of the electric explosion.The longer time of the late time discharge and the more energy of the electric explosion,the easier it is to expand the HTD,which improves the probability of the ignition success. | Haotian Jian Guoqiang Zheng Lejian Chen Zheng Ning Guofu Yin Peng Zhu Ruiqi Shen | 2024 | Defence Technology(防务技术)2024，32，2： | 0 |
| 7 | Recent advances in nickel-based catalysts in eCO_(2)RR for carbon neutrality显示文摘The excessive use of nonrenewable energy has brought about serious greenhouse effect.Converting CO_(2) into high-value-added chemicals is undoubtedly the best choice to solve energy problems.Due to the excellent cost-effectiveness and dramatic catalytic performance,nickel-based catalysts have been considered as the most promising candidates for the electrocatalytic CO_(2) reduction reaction(eCO_(2)RR).In this work,the electrocatalytic reduction mechanism of CO_(2) over Ni-based materials is reviewed.The strategies to improve the eCO_(2)RR performance are emphasized.Moreover,the research on Ni-based materials for syngas generation is briefly summarized.Finally,the prospects of nickel-based materials in the eCO_(2)RR are provided with the hope of improving transition-metal-based electrocatalysts for eCO_(2)RR in the future. | Weikang Peng Fengfeng Li Shuyi Kong Chenxi Guo Haotian Wu Jiacheng Wang Yi Shen Xianguang Meng Mingxi Zhang | 2024 | Carbon Energy2024，6，2： | 0 |
| 8 | Expert recommendations on collection and annotation of otoscopy images for intelligent medicine显示文摘Middle and outer ear diseases are common otological diseases worldwide.Otoscopy and otoendoscopy exami-nations are essential first steps in the evaluation of patients with otological diseases.Misdiagnosis often occurs when the doctor lacks experience in interpreting the results of otoscopy or otoendoscopy,leading to delays in treatment or complications.Using deep learning to process otoscopy images and developing otoscopic artificial-intelligence-based decision-making systems will become a significant trend in the future.However,the uneven quality of otoscopy images is among the major obstacles to development of such artificial intelligence systems,and no standardized process for data acquisition,and annotation of otoscopy images in intelligent medicine has yet been fully established.The standards for data storage and data management are unified with those of other specialties and are introduced in detail here.This expert recommendation criterion improved and standardized the collection and annotation procedures for otoscopy images and fills the current gap in otologic intelligent medicine;it would thus lay a solid foundation for the standardized collection,storage,and annotation of oto-scopy images and the application of training algorithms,and promote the development of automatic diagnosis and treatment for otological diseases.The full text introduced image collection(including patient preparation,equipment standards,and image storage),image annotation standards,and quality control. | Yuexin Cai Junbo Zeng Liping Lan Suijun Chen Yongkang Ou Linqi Zeng Qintai Yang Peng Li Yubin Chen Qi Li Hongzheng Zhang Fan Shu Guoping Chen Wenben Chen Yahan Yang Ruiyang Li Anqi Yan Haotian Lin Yiqing Zheng | 2022 | Intelligent Medicine2022，2，4： | 0 |
| 9 | Propagation analysis and prediction of the COVID-19显示文摘Based on the official data modeling,this paper studies the transmission process of the Corona Virus Disease 2019(COVID-19).The error between the model and the official data curve is quite small.At the same time,it realized forward prediction and backward inference of the epidemic situation,and the relevant analysis help relevant countries to make decisions. | Lixiang Li Zihang Yang Zhongkai Dang Cui Meng Jingze Huang Haotian Meng Deyu Wang Guanhua Chen Jiaxuan Zhang Haipeng Peng Yiming Shao | 2020 | Infectious Disease Modelling2020，5，1： | 0 |
| 10 | Modeling of Large-Scale Hydrogen Storage System Considering Capacity Attenuation and Analysis of Its Efficiency Characteristics显示文摘In the existing power system with a large-scale hydrogen storage system,there are problems such as low efficiency of electric-hydrogen-electricity conversion and single modeling of the hydrogen storage system.In order to improve the hydrogen utilization rate of hydrogen storage system in the process of participating in the power grid operation,and speed up the process of electric-hydrogen-electricity conversion.This article provides a detailed introduction to the mathematical and electrical models of various components of the hydrogen storage unit,and also establishes a charging and discharging efficiency model that considers the temperature and internal gas partial pressure of the hydrogen storage unit.These models are of great significance for studying and optimizing gas storage technology.Through these models,the performance of gas storage units can be better understood and improved.These studies are very helpful for improving energy storage efficiency and sustainable development.The factors affecting the charge-discharge efficiency of hydrogen storage units are analyzed.By integrating the models of each unit and considering the capacity degradation of the hydrogen storage system,we can construct an efficiency model for a large hydrogen storage system and power conversion system.In addition,the simulation models of the hydrogen production system and hydrogen consumption system were established in MATLAB/Simulink.The accuracy and effectiveness of the simulation model were proved by comparing the output voltage variation curve of the simulation with the polarization curve of the typical hydrogen production system and hydrogen consumption system.The results show that the charge-discharge efficiency of the hydrogen storage unit increases with the increase of operating temperature,and H2 and O2 partial voltage have little influence on the charge-discharge efficiency.In the process of power conversion system converter rectification operation,its efficiency decreases with the increase of temperature,while in the process of inverter operation,power conversion system efficiency increases with the increase of temperature.Combined with the efficiency of each hydrogen storage unit and power conversion system converter,the upper limit of the capacity loss of different hydrogen storage units was set.The optimal charge-discharge efficiency of the hydrogen storage system was obtained by using the Cplex solver at 36.46%and 66.34%. | Junhui Li Haotian Zhang Cuiping Li Xingxu Zhu Ruitong Liu Fangwei Duan Yongming Peng | 2024 | Energy Engineering2024，121，2： | 0 |
| 11 | Application of three-dimensional printed navigation templates to correct lower limb deformities in children by the guided growth technique显示文摘Objective Currently,individualized navigation templates are rarely applied in pediatric orthopedic surgery.This study aimed to explore the potential of navigation templates obtained using computer-aided design and three-dimensional(3D)printing to correct lower limb deformities in children by the guided growth technique.Methods We prospectively studied 45 children with leg length discrepancy(LLD)or lower limb angular deformities,who underwent guided growth surgery involving 8-plate.In total,21 and 24 children were included in the navigation template(group A)group and in the traditional surgery(group B)group,respectively.Mimics software was used for designing and printing navigation templates.The operation time,X-ray radiation exposure,damage to cartilage,and postoperative complications were recorded.Results The mean operation time in groups A and B were 20.78 and 28.39 min,respectively,and the difference was statistically significant.Compared with group B,the intraoperative exposure of X-rays in group A was reduced by 25%on average.After 9-24 months of follow-up,the deformities were corrected in both groups.No significant differences in the treatment effect were noted between the groups,and no complications occurred.Conclusions Using the individualized navigation template in the guided growth technique made the surgical procedure convenient and simple to perform.In addition,the operation time and intraoperative exposure to X-rays were reduced.We consider that 3D printed navigation templates can facilitate the accurate completion of corrective surgeries for lower limb deformities in children,which is worthy of promotion and application. | Minjie Fan Yinming Wang Haotian Pang Yiwei Wang Peng Xu Yue Lou Pengfei Zheng Kai Tang | 2022 | World Journal of Pediatric Surgery2022，5，3： | 0 |
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