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Multi-View Image-Based 3D Reconstruction in Indoor Scenes: A Survey

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ZTE Communications 2024年

作者： LU Ping SHI wenzhe qiao Xiuquan State Key Laboratory of Mobile Network and Mobile Multimedia Technology ZTE Corporation State Key Laboratory of Networking and Switching Technology， Beijing University of Posts and Telecommunications

Three-dimensional reconstruction technology plays an important role in indoor scenes by converting objects and structures in indoor environments into accurate 3D models using multi-view RGB images. It offers a wide range of applications in fields such as virtual reality， augmented reality， indoor navigation， and game development. Existing methods based on multi-view RGB images have made significant progress in 3D reconstruction. These image-based reconstruction methods not only possess good expressive power and generalization performance， but also handle complex geometric shapes and textures effectively. Despite facing challenges such as lighting variations， occlusion， and texture loss in indoor scenes， these challenges can be effectively addressed through deep neural networks， neural implicit surface representations， and other techniques. The technology of indoor 3D reconstruction based on multi-view RGB images has a promising future. It not only provides immersive and interactive virtual experiences but also brings convenience and innovation to indoor navigation， interior design， and virtual tours. As the technology evolves， these image-based reconstruction methods will be further improved to provide higher quality and more accurate solutions for indoor scene reconstruction.

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Licorice-saponin A3 is a broad-spectrum inhibitor for COVID-19 by targeting viral spike and anti-inflammation

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Journal of Pharmaceutical Analysis 2024年第1期14卷 115-127页

作者： Yang Yi wenzhe Li Kefang Liu Heng Xue Rong Yu Meng Zhang Yang-Oujie Bao Xinyuan Lai Jingjing Fan Yuxi Huang Jing Wang Xiaomeng Shi Junhua Li Hongping Wei Kuanhui Xiang Linjie Li Rong Zhang Xin Zhao Xue qiao Hang Yang Min Ye State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical SciencesPeking UniversityBeijing100191China Yunnan Baiyao International Medical Research Center Peking UniversityBeijing100191China CAS Key Laboratory of Pathogen Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijing100101China CAS Key Laboratory of Special Pathogens and Biosafety Center for Biosafety Mega-ScienceWuhan Institute of VirologyChinese Academy of SciencesWuhan430071China University of Chinese Academy of Sciences Beijing100049China Department of Microbiology and Infectious Disease Center School of Basic Medical SciencesPeking University Health Science CenterPeking UniversityBeijing100191China Hubei Jiangxia Laboratory Wuhan430000China Shenzhen Children's Hospital ShenzhenGuangdong518036China

Currently,human health due to corona virus disease 2019(COVID-19)pandemic has been seriously *** coronavirus severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)spike(S)protein plays a crucial role in virus transmission and several S-based therapeutic approaches have been approved for the treatment of ***,the efficacy is compromised by the SARS-CoV-2 evolvement and *** we report the SARS-CoV-2 S protein receptor-binding domain(RBD)inhibitor licorice-saponin A3(A3)could widely inhibit RBD of SARS-CoV-2 variants,including Beta,Delta,and Omicron BA.1,XBB and ***,A3 could potently inhibit SARS-CoV-2 Omicron virus in Vero E6 cells,with EC50 of 1.016μ*** mechanism was related to binding with Y453 of RBD determined by hydrogen-deuterium exchange mass spectrometry(HDX-MS)analysis combined with quantum mechanics/molecular mechanics(QM/MM)***,phosphoproteomics analysis and multi fluorescent immunohistochemistry(mIHC)respectively indicated that A3 also inhibits host inflammation by directly modulating the JNK and p38 mitogen-activated protein kinase(MAPK)pathways and rebalancing the corresponding immune *** work supports A3 as a promising broad-spectrum small molecule drug candidate for COVID-19.

关键词： COVID-19 Inflammation Licorice-saponin A3 Receptor-binding domain(RBD) SARS-CoV-2

气固两相介质协同抑制瓦斯爆炸实验及分子动力学研究

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爆炸与冲击 2024年第5期44卷 167-178页

作者：谯永刚华杰袁丹萍张泽宇左文哲太原理工大学安全与应急管理工程学院山西太原030024 中国矿业大学安全工程学院江苏徐州221116 山西省地质矿产研究院有限公司山西太原030001

针对传统单相抑爆介质效果不佳的问题,提出气固两相介质通过不同抑爆原理的协同作用,实现高效快速抑制瓦斯爆炸。研究使用NaHCO3粉体与CO_(2)气体协同抑制瓦斯爆炸的方法,选用标准20 L球形爆炸测试装置,并通过密度泛函理论对甲烷爆炸微... 详细信息

针对传统单相抑爆介质效果不佳的问题,提出气固两相介质通过不同抑爆原理的协同作用,实现高效快速抑制瓦斯爆炸。研究使用NaHCO3粉体与CO_(2)气体协同抑制瓦斯爆炸的方法,选用标准20 L球形爆炸测试装置,并通过密度泛函理论对甲烷爆炸微观反应机理中各反应物、过渡态、产物进行构型优化,在此基础上进行后续计算。结果表明:体积分数为16%的CO_(2)和质量浓度为0.35 g/L的NaHCO3单相介质对瓦斯爆炸具有优良的抑制效果,但0.1 g/L粉体存在时会使最大升压速率提升17.9%;气固两相介质抑爆相较单相CO_(2)、单相NaHCO3粉体使最大爆炸压力降低,采用体积分数为8%的CO_(2)协同0.125 g/L粉体时,瓦斯爆炸最大爆炸压力降低72.42%,最大升压速率降至2.345 MPa/s,抑制效果达到最优;但当体积分数为4%的CO_(2)协同0.05 g/L粉体时会使最大爆炸升压速率上升93.68%,反应呈现出一定的加剧现象;量子化学计算表明,在气固两相介质协同抑制瓦斯爆炸的过程中,NaHCO3粉体裂解会吸收反应体系中的热量,其分解产物会与混合体系中的OH·、H·优先反应,阻碍O·的产生,将链式过程抑制在CH2O阶段,进而抑制链式反应的传递过程;NaHCO3粉体分解产生的CO_(2)与混合体系中的CO_(2)稀释了混合体系中甲烷的体积分数,减少甲烷与氧气分子之间碰撞发生的概率,对反应进程起到有效抑制作用。

关键词：抑制瓦斯爆炸气固两相介质协同反应机理混合体系吸热分子动力学

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煤与瓦斯突出冲击气流数值模拟研究

煤矿安全 2024年第2期55卷 55-61页

作者：左文哲谯永刚华杰秦鹏飞王海杰太原理工大学安全与应急管理工程学院山西太原030024 山西襄垣七一新发煤业有限公司山西襄垣046299 山西黄土坡鑫运煤业有限公司山西长治046500

为揭示煤与瓦斯突出冲击气流传播规律,利用COMSOL软件中高马赫流动与浓物质传递模块,模拟了煤与瓦斯突出过程中冲击气流的速度场、压力场、冲击力场、浓度场等分布规律。模拟结果表明:巷道内冲击气流呈射流状,速度可高达378.6 m/s,且随... 详细信息

为揭示煤与瓦斯突出冲击气流传播规律,利用COMSOL软件中高马赫流动与浓物质传递模块,模拟了煤与瓦斯突出过程中冲击气流的速度场、压力场、冲击力场、浓度场等分布规律。模拟结果表明:巷道内冲击气流呈射流状,速度可高达378.6 m/s,且随着距离的增大,呈现多峰值振荡衰减趋势,在射流中出现周期性的膨胀波区和压缩波区,射流尾部发展为湍流并失稳,在巷道内无序运移;突出冲击气流冲击力可高达246.3 kPa,冲击波以当地音速在巷道内运移;瓦斯气体最大扩散距离为133.6 m,巷道中部瓦斯体积分数接近于100%;由于突出后期巷道内存在压力差,瓦斯气体回流,高体积分数瓦斯和巷道内空气进一步混合。

关键词：煤与瓦斯突出冲击气流数值模拟瓦斯压力冲击波瓦斯体积分数

Competing reduction induced homogeneous oxygen doping to unlock MoS_(2)basal planes for faster polysulfides conversion

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Journal of Energy Chemistry 2022年第10期31卷 26-34,I0002页

作者： Da Lei wenzhe Shang Xu Zhang Yongpeng Li Xiaoshan Shi Shaoming qiao Qian Wang Qiang Zhang Ce Hao Hui Xu Guohua Chen Gaohong He Fengxiang Zhang State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian 116024LiaoningChina School of Chemical Engineering Dalian University of TechnologyPanjin 124221LiaoningChina Shenzhen ApogeeTec Greenergy Co.Ltd. Shenzhen 518000GuangdongChina Department of Mechanical Engineering Research Institute for Smart EnergyThe Hong Kong Polytechnic UniversityKowloonHong Kong 999077China

The parasitic polysulfides shuttle effect greatly hinders the practical application of lithium sulfur batteries,and this issue can be addressed by promoting polysulfides conversion with catalytic materials such as Mo S_(2).However,the catalytic activity of Mo S_(2)mainly relies on edge sites,but is limited by inert basal *** herein report a novel,facile,ethylene glycol enabled competing reduction strategy to dope Mo S_(2)homogeneously with oxygen atoms so that its inert basal planes can be *** glycol works as a reducing agent and competes with thiourea to react with ammonium molybdate,leading to insufficient sulfuration of Mo,and consequent formation of O-Mo S_(2).Our theoretical and experimental investigations indicate that the homogeneously distributed O dopants can create abundant adsorption/-catalytic sites in the Mo S_(2)basal planes,enlarge the inter-plane distance to promote ion transport,and thus enhance the catalytic conversion of *** oxygen doped Mo S_(2)(O-Mo S_(2))is supported on carbon nanosheets(CNS)and the composite(O-Mo S_(2)/CNS)is employed to modify the separator of Li-S *** gives the battery an initial discharge capacity of 1537 m Ah g-1at 0.2 C,and the battery retains a discharge capacity of 545 m Ah g-1after ultra-long 2000 cycles at 1 C,corresponding to a very small cyclic decay rate of 0.0237%.Even under a raising sulfur loading of 8.2 mg cm^(-2),the Li-S battery also delivers a high discharge capacity(554 m Ah g^(-1))with outstanding cycle stability(84.6%capacity retention)after 100 cycles at 0.5 *** work provides a novel,facile approach to fabricate highly catalytically active oxygen-doped Mo S_(2)for advanced Li-S batteries.

关键词： Competing reduction One-pot Oxygen-doped MoS_(2) Unlocked basal plane Li-S batteries

采用PSO算法对低压断路器的低能耗优化设计

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电工技术学报 2017年第19期32卷 100-106页

作者：戴水东鞠文哲夏克文周巧河北工业大学电子信息工程学院天津300401

在低压断路器的低能耗设计中,参数设置通常采用经验方式选取,因而很难实现能耗最低化。为此,在分析HSW6低压断路器能耗的数学物理模型的基础上,提出一种采用粒子群算法(PSO)进行低能耗参数优化设计的方法。首先对断路器的额定电流和内... 详细信息

在低压断路器的低能耗设计中,参数设置通常采用经验方式选取,因而很难实现能耗最低化。为此,在分析HSW6低压断路器能耗的数学物理模型的基础上,提出一种采用粒子群算法(PSO)进行低能耗参数优化设计的方法。首先对断路器的额定电流和内部功耗、铜耗、触头数、触头电阻等影响因素进行分析与建模,并转换成求解这一组参数的最优值问题;然后采用自适应PSO算法进行全局寻优得到参数最优解。实际应用表明,该文提出的基于PSO算法的低能耗参数优化设计方法不仅能实现断路器低能耗设计要求,而且提高了设计效率。

关键词：低压断路器低能耗设计参数优化 PSO算法

Schaftoside inhibits 3CL^(pro)and PL^(pro)of SARS-CoV-2 virus and regulates immune response and inflammation of host cells for the treatment of COVID-19

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Acta Pharmaceutica Sinica B 2022年第11期12卷 4154-4164页

作者： Yang Yi Meng Zhang Heng Xue Rong Yu Yang-Oujie Bao Yi Kuang Yue Chai Wen Ma Jing Wang Xiaomeng Shi wenzhe Li Wei Hong Junhua Li Elishiba Muturi Hongping Wei Joachim Wlodarz Szczepan Roszak Xue qiao Hang Yang Min Ye State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical SciencesPeking UniversityBeijing 100191China CAS Key Laboratory of Special Pathogens and Biosafety Center for Biosafety Mega-ScienceWuhan Institute of VirologyChinese Academy of SciencesWuhan 430071China University of Chinese Academy of Sciences Bejing 100049China Faculty of Science and Technology University of SilesiaKatowice 40-007Poland Department of Phrysical and Quantum Chenmistry Faculty of ChemistryWroclaw University of Science and Technology Wroclaw 50-370Poland

It is an urgent demand worldwide to control the coronavirus disease 2019(COVID-19)pandemic caused by the severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)*** 3-chymotrypsin-like protease(3CL^(pro))and papain-like protease(PL^(pro))are key targets to discover SARS-CoV-2 *** screening 12 Chinese herbal medicines and 125 compounds from licorice,we found that a popular natural product schaftoside inhibited 3CL^(pro)and PL^(pro)with IC_(50)values of 1.73±0.22 and 3.91±0.19μmol/L,respectively,and inhibited SARS CoV-2 virus in Vero E6 cells with EC_(50)of 11.83±3. 23μmol/L. Hydrogen-deuterium exchange mass spectrometry analysis, quantum mechanics/molecular mechanics calculations, together with site-directed mutagenesis indicated the antiviral activities of schaftoside were related with non-covalent interactions with H41, G143 and R188 of3CLpro, and K157, E167 and A246 of PLpro. Moreover, proteomics analysis and cytokine assay revealed that schaftoside also regulated immune response and inflammation of the host cells. The antiinflammatory activities of schaftoside were confirmed on lipopolysaccharide-induced acute lung injury mice. Schaftoside showed good safety and pharmacokinetic property, and could be a promising drug candidate for the prevention and treatment of COVID-19.

关键词： COVID-19 SARS-CoV-2 3-Chymotrypsin-like protease Papain-like protease Licorice Schaftoside Immune response Infammation

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采用二阶锥规划和压缩感知的方向图综合算法

计算机应用研究 2018年第7期35卷 2015-2017,2029页

作者：鞠文哲夏克文牛文佳周巧河北工业大学电子信息工程学院天津300401

常规自适应方向图综合在求解最优权值向量时需经过复杂的广义矩阵求逆运算,计算过程繁琐,占用存储空间大。针对这一问题,提出一种采用二阶锥规划与压缩感知理论的改进自适应方向图综合算法。改进的算法将传统算法中的误差性能函数通过... 详细信息

常规自适应方向图综合在求解最优权值向量时需经过复杂的广义矩阵求逆运算,计算过程繁琐,占用存储空间大。针对这一问题,提出一种采用二阶锥规划与压缩感知理论的改进自适应方向图综合算法。改进的算法将传统算法中的误差性能函数通过数学变换转换成标准二阶锥规划形式快速求解,同时应用压缩感知理论将大规模阵列权值稀疏化处理,从而得到最优天线阵列权值向量并减少训练时间。仿真结果表明,采用二阶锥规划与压缩感知的改进算法在大规模阵列天线方向图综合时求解速度快、运算精度高,且在应用压缩感知后形成的方向图有较低旁瓣,干扰方向零陷深,接近满阵时的波束性能。

关键词：自适应方向图综合二阶锥规划压缩感知大规模阵列天线阵列权值稀疏化

氟菌·霜霉威对烟草黑胫病的防效及其对烟株生长的影响

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中国烟草学报 2018年第4期24卷 129-134页

作者：任晓芬亓文哲程星凯刘政军姬小雪乔康山东农业大学植物保护学院山东泰安271018 山东泰阳生物科技有限公司山东泰安271000

为探明氟菌·霜霉威防治烟草黑胫病的潜力,本研究采用菌丝生长速率法测定了6种杀菌剂对烟草黑胫病菌丝生长的影响,并通过温室盆栽试验明确了氟菌·霜霉威对烟草黑胫病的防效及其对烟株生长的影响。结果表明,氟吡菌胺与霜霉威盐酸盐以质... 详细信息

为探明氟菌·霜霉威防治烟草黑胫病的潜力,本研究采用菌丝生长速率法测定了6种杀菌剂对烟草黑胫病菌丝生长的影响,并通过温室盆栽试验明确了氟菌·霜霉威对烟草黑胫病的防效及其对烟株生长的影响。结果表明,氟吡菌胺与霜霉威盐酸盐以质量比1:10混用(氟菌·霜霉威)对烟草黑胫病菌丝生长的抑制效果最好,EC50值为0.06 mg/L。温室盆栽试验结果表明氟菌·霜霉威在773.4 g a.i./hm2时,对烟草黑胫病的防效可达81.50%,显著高于甲霜灵(55.75%)和烯酰吗啉(67.83%)的防效。氟菌·霜霉威在提高烟草株高、茎粗、有效叶片数及光合速率等指标优于与甲霜灵和烯酰吗啉,表现出良好的促生效果。施用氟菌·霜霉威后,烟株叶片的多酚氧化酶(PPO)、过氧化物酶(POD)和超氧化物歧化酶(SOD)等防御酶活性显著增加,而丙二醛(MDA)含量降低。本结果表明氟菌·霜霉威可作为甲霜灵和烯酰吗啉的替代药剂用来防治烟草黑胫病。

关键词：烟草黑胫病氟菌·霜霉威室内毒力盆栽试验防御酶