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ARCosmetics:a real-time augmented reality cosmetics try-on system

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Frontiers of Computer Science 2023年第4期17卷 15-28页

作者： Shan AN jianye chen Zhaoqi ZHU Fangru ZHOU Yuxing YANG Yuqing MA Xianglong LIU Haogang ZHU Tech.&Data Center *** Inc.Beijing 100176China State Key Lab of Software Development Environment Beihang UniversityBeijing 100191China

A virtual cosmetics try-on system provides a realistic try-on experience for consumers and helps them efficiently choose suitable *** this article,we propose a real-time augmented reality virtual cosmetics try-on system for smartphones(ARCosmetics),taking speed,accuracy,and stability into consideration at each step to ensure a better user experience.A novel and very fast face tracking method utilizes the face detection box and the average position of facial landmarks to estimate the faces in continuous frames.A dynamic weight Wing loss is introduced to assign a dynamic weight to every landmark by the estimated error during *** balances the attention between small,medium,and large range error and thus increases the accuracy and *** also designed a weighted average method to utilize the information of the adjacent frame for landmark refinement,guaranteeing the stability of the generated *** experiments conducted on a large 106-point facial landmark dataset and the 300-VW dataset demonstrate the superior performance of the proposed method compared to other state-of-the-art *** also conducted user satisfaction studies further to verify the efficiency and effectiveness of our ARCosmetics system.

关键词： facial landmark localization face tracking stabilization augmented reality virtual try-on

VabHLH137 promotes proanthocyanidin and anthocyanin biosynthesis and enhances resistance to Colletotrichum gloeosporioides in grapevine

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Horticulture Research 2023年第2期10卷 106-117页

作者： Dan Yu Wei Wei Zhongqi Fan jianye chen Yilin You Weidong Huang Jicheng Zhan Beijing Key Laboratory of Viticulture and Enology College of Food Science and Nutritional EngineeringChina Agricultural UniversityBeijing 100085China State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables College of HorticultureSouth China Agricultural UniversityGuangzhou510642China

Proanthocyanidins(PAs)and anthocyanins are involved in the response of plants to various environmental ***,the mechanism behind defense-induced PA biosynthetic regulation is still not completely elucidated,also in *** study performed a transcriptome sequencing analysis of grape berries infected with Colletotrichum gloeosporioides to highlight the induction of the VabHLH137 factor from the basic helix-loop-helix(bHLH)XII subfamily by the fungus,which appeared to be significantly co-expressedwith PA-related *** functional analysis of VabHLH137 overexpression and knockdownin transgenic grape calli showed that it positively regulated PA and anthocyanin ***,VabHLH137 overexpression in the grape calli significantly increased resistance to ***.A yeast one-hybrid and electrophoretic mobility shift assay revealed that VabHLH137 directly bound to the VaLAR2 promoter,enhancing its activity and interacting with VaMYBPAR,a transcriptional activator of PA ***,transient experiments showed that although the VabHLH137+VaMYBPAR complex activated VaLAR2 expression,it failed to further enhance VaLAR2 expression compared to VaMYBPAR *** findings indicated that VabHLH137 enhanced PA biosynthesis by activating of VaLAR2 expression,providing new insight into the transcriptional regulation of defense-induced PA biosynthesis in grapevine.

关键词： resistance alone biosynthesis

Methionine oxidation and reduction of the ethylene signaling component MaEIL9 are involved in banana fruit ripening

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Journal of Integrative Plant Biology 2023年第1期65卷 150-166页

作者： Lisha Zhu Lin chen Chaojie Wu Wei Shan Danling Cai Zengxiang Lin Wei Wei jianye chen Wangjin Lu Jianfei Kuang State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center of Southern Horticultural Products Preservation Ministry of EducationCollege of Horticulture South China Agricultural UniversityGuangzhou 510642 China Key Laboratory of Biology and Genetic Improvement of Horticultural Crops(South China) Ministry of Agriculture and Rural AffairsCollege of Horticulture South China Agricultural UniversityGuangzhou 510642 China

The ethylene insensitive 3/ethylene insensitive3-like(EIN3/EIL)plays an indispensable role in fruit ***,the regulatory mechanism that links post-translational modification of EIN3/EIL to fruit ripening is largely ***,we studied the expression of 13 MaE IL genes during banana fruit ripening,among which MaE IL9 displayed higher enhancement particularly in the ripening *** with its transcript pattern,abundance of MaE IL9 protein gradually increased during the ripening process,with maximal enhancement in the *** affinity purification(DAP)-seq analysis revealed that MaE IL9 directly targets a subset of genes related to fruit ripening,such as the starch hydrolytic genes MaA MY3D and MaB *** overexpressing MaE IL9 in tomato fruit hastened fruit ripening,whereas transiently silencing this gene in banana fruit retarded the ripening process,supporting a positive role of MaEIL9 in fruit ***,oxidation of methionines(Met-129,Met-130,and Met-282)in MaEIL9 resulted in the loss of its DNA-binding capacity and transcriptional activation ***,we identified MaEIL9 as a potential substrate protein of methionine sulfoxide reductase A MaMsrA4,and oxidation of Met-129,Met-130,and Met-282in MaEIL9 could be restored by ***,our findings reveal a novel regulatory network controlling banana fruit ripening,which involves MaMsrA4-mediated redox regulation of the ethylene signaling component MaEIL9.

关键词： banana EIN3/EIL redox regulation ROS starch degradation

Transcriptomics-based identification and characterization of genes related to sugar metabolism in‘Hongshuijing’pitaya

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Horticultural Plant Journal 2022年第4期8卷 450-460页

作者： Zhike Zhang Yemiao Xing Muthusamy Ramakrishnan Canbin chen Fangfang Xie Qingzhu Hua jianye chen Rong Zhang Jietang Zhao Guibing Hu Yonghua Qin State Key Laboratory for Conservation and Utilization of Subtropical Agrobioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Key Laboratory of Biology and Genetic Improvement of Horticultural Crops(South China) Ministry of Agriculture and Rural AffairsCollege of HorticultureSouth China Agricultural UniversityGuangzhou 510642China Co-Innovation Center for Sustainable Forestry in Southern China Nanjing Forestry UniversityNanjing 210037China Bamboo Research Institute Nanjing Forestry UniversityNanjing 210037China

Sugar composition not only affects fruit flavor but is also an important determinant of fruit taste and consumer *** this study,changes in the sugar content and sugar-metabolizing enzymes were investigated from different sections of various fruit development phases of‘Hongshuijing’pitaya(Hylocereus monacanthus).Genes related to sugar metabolism were also screened by transcriptome *** results indicated that glucose was the major sugar in mature pitaya fruit,and was mainly regulated by vacuolar acid invertase(VAI)and sucrose synthase(SS)(degradative direction).Sugar accumulation varied in pulp between different sections of the pitaya ***,neutral invertase(NI)and SS(degradative direction)are crucial enzymes for sugar accumulation in *** expression of 17 genes related to sucrose metabolism obtained from seven databases[NCBI non-redundant protein database(Nr),NCBI non-redundant nucleotide sequence database(Nt),EuKaryotic Orthologous Groups(KOG),The Protein Families(Pfam),Kyoto Encyclopedia of Genes and Genomes(KEGG),Swiss-prot,and Gene Ontology(GO)]were analyzed in different pitaya pulp ***1 had the highest relative expression level on the 29th day after pollination(DAP).Positive correlations were found between HpVAI1 expression and VAI activity;HpNI4 and NI activity;HpSS2,HpSS5,and SS activity(synthetic direction),indicating that HpVAI1,HpNI4,and HpSS2 and HpSS5 were involved in the regulation of VAI,NI,and SS(synthetic direction),***1 and HpNI4 regulated sucrose degradation and the accumulation of glucose and fructose,while HpSS2 and HpSS5 regulated sucrose *** results suggest that HpVAI1 plays a key role in sugar metabolism during fruit development of‘Hongshuijing’*** results of this study provide new information about sugar metabolism in pitaya fruit that could help improve fruit quality and the breeding of new cultivars.

关键词： Hylocereus monacanthus Transcriptional analysis Sugar metabolism qRT-PCR Expression analysis

基于空气源热泵能效提升的物理和数据混合驱动模型研究进展

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制冷与空调 2024年第4期24卷 87-96页

作者：郭焱华王宁波邵双全陈建业华中科技大学能源与动力工程学院

由于在实际运行中受环境条件和用户行为等多种因素的影响,空气源热泵系统的实际运行能效与理论能效存在较大差异,切实提升其实际运行能效水平是亟待解决的问题。本文首先对基于空气源热泵能效提升的混合驱动模型进行描述,然后从预测和... 详细信息

由于在实际运行中受环境条件和用户行为等多种因素的影响,空气源热泵系统的实际运行能效与理论能效存在较大差异,切实提升其实际运行能效水平是亟待解决的问题。本文首先对基于空气源热泵能效提升的混合驱动模型进行描述,然后从预测和控制以及故障诊断2个方面阐述现有的混合驱动模型,并总结物理信息可融入数据驱动模型的方式,最终提出能效提升应重点关注的混合驱动可解释性建模的研究方向,为进一步提升空气源热泵实际运行能效提供参考。

关键词：空气源热泵能效数据驱动混合模型可解释性

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Impacts of wind conditions on hydrogen leakage during refilling hydrogen-powered vehicles

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Energy Storage and Saving 2023年第2期2卷 449-458页

作者： Lin Xie Yangyiming Rong jianye chen Fang Yuan Rui Long School of Energy and Power Engineering Huazhong University of Science and TechnologyWuhan430074China Power China Huadong Engineering Corporation Limited Hangzhou311100China

Although hydrogen leakage at hydrogen refueling stations has been a concern,less efforts have been devoted to hydrogen leakage during the refueling of hydrogen-powered *** this study,hydrogen leakage and dilution from the hydrogen dispenser during the refueling of hydrogen-powered vehicles were numerically investigated under different wind *** shape,size,and distribution of flammable gas clouds(FGC)during the leakage and dilution processes were *** results showed that the presence of hydrogen-powered vehicles resulted in irregular FGC *** wind speeds(v wv)were associated with longer FGC propagation *** v_(wv)=2 m·s^(−1)and 10 m·s^(−1),the FGC lengths at the end of the leakage were 7.9 m and 20.4 m,*** downwind conditions,higher wind speeds corresponded to lower FGC *** FGC height was larger under upwind conditions and was slightly affected by the magnitude of the wind *** the dilution process,the existence of a region with a high hydrogen concentration led to the FGC volume first increasing and then gradually *** promoted the mixing of hydrogen and air,accelerated FGC dilution,inhibited hydrogen uplifting,and augmented the horizontal movement of the *** higher wind speeds,the low-altitude FGC movements could induce potential safety hazards.

关键词： Hydrogen safe Wind condition Hydrogen refilling Hydrogen leakage

Review of Fiber-Optic Localized Surface Plasmon Resonance Sensors:Geometries,Fabrication Technologies,and Bio-Applications

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Photonic Sensors 2024年第2期14卷 31-56页

作者： Mengdi LU chen WANG Ruizhi FAN Ming LIN jianye GUANG Wei PENG Affiliated Cancer Hospital Dalian University of TechnologyShenyang 110042China School of Physics Dalian University of TechnologyDalian 116024China

Localized surface plasmon resonance(LSPR)biosensors,which enable nanoscale confinement and manipulation of light,offer the enhanced sensitivity and electromagnetic energy *** integration of LSPR with the fiber-optic technology has led to the development of compact and versatile sensors for miniaturization and remote *** comprehensive review explores various sensor configurations,fiber types,and geometric shapes,highlighting their benefits in terms of sensitivity,integration,and performance *** techniques such as focused non-chemical bonding strategies and self-assembly of nanoparticles are discussed,providing control over nanostructure morphology and enhancing sensor ***-applications of fiber-optic LSPR(FOLSPR)sensors are detailed,specifically in biomolecular interactions and analysis of proteins,pathogens and cells,nucleic acids(DNA and RNA),and other small molecules(organic compounds and heavy metal ions).Surface modification and detection schemes are emphasized for their potential for label-free and real-time *** challenges and prospects of FOLSPR sensors are addressed,including the developments in sensitivity,fabrication techniques,and measurement *** with emerging technologies such as nanomaterials is highlighted as a promising direction for future ***,this review provides insights into the advancements and potential applications of FOLSPR sensors,paving the way for sensitive and versatile optical biosensing platforms in various fields.

关键词： Fiber-optic localized surface plasmon resonance biosensor nanoparticles geometric configuration fabrication technology

Evaluation of the Shallow Gas Hydrate Production Based on the Radial Drilling-Heat Injection-Back Fill Method

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Journal of Ocean University of China 2024年第1期23卷 119-128页

作者： chen Qiang WAN Yizhao WU Nengyou SUN jianye WANG Jian LIU Changling LI Yanlong LI chengfeng HU Gaowei Key Laboratory of Gas Hydrate Ministry of Natural ResourcesQingdao 266071China Laboratory for Marine Mineral Resources Laoshan LaboratoryQingdao 266071China CNPC Offshore Engineering Company Limited Beijing 100028China Technology Innovation Center for Marine Methane Monitoring Ministry of Natural ResourcesQingdao 266071China

It has been evidenced that shallow gas hydrate resources are abundant in deep oceans *** geological back-ground,occurrence,and other characteristics differ significantly from deep-seated *** of the high risk of well construction and low production efficiency,they are difficult to be recovered by using conventional oil production *** a result,this paper proposes an alternative design based on a combination of radial drilling,heat injection,and backfilling ***-branch holes are used to penetrate shallow gas hydrate reservoirs to expand the depressurization area,and heat injection is utilized as a supplement to improve gas *** information collected from an investigation site close to the offshore production well in the South China Sea is used to assess the essential components of this plan,including well construction stability and gas production *** demonstrates that the hydraulic fracturing of the 60mbsf overburden layer can be prevented by regulating the drilling fluid ***,the traditional well structure is unstable,and the suction anchor is advised for better mechanical *** gas produc-tion rate can be significantly increased by combining hot water injection and depressurization ***,the suitable produc-tion equipment already in use is discussed.

关键词： shallow gas hydrate trail production radial drilling-heat injection-back fill method experimental and numerical simulation

Validation of dynamic cavitation model for unsteady cavitating flow on NACA66

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Science China(Technological Sciences) 2014年第4期57卷 819-827页

作者： ZHANG XiaoBin ZHANG Wei chen jianye QIU LiMin SUN DaMing Institute of Refrigeration and Cryogenics Zhejiang University

Unsteady cavitating flow is extremely complicated and brings more serious damages and unignorable problems compared with steady cavitating *** has become a practical way to model cavitation;however,the popularly used full cavitation model cannot reflect the pressure-change that the bubble experiences during its life path in the highly unsteady flow like cloud *** a dynamic cavitation model(DCM)is proposed and it has been considered to have not only the first-order pressure effects but also zero-order effect and can provide greater insight into the physical process of bubble producing,developing and collapsing compared to the traditional cavitation *** has already been validated for steady cavitating flow,and the results were ***,DCM is designed and supposed to be more accurate and efficient in modeling unsteady cavitating flow,which is also the purpose of this *** basic characteristic of the unsteady cavitating flow,such as the vapor volume fraction distribution and the evolution of pressure amplitude and frequency at different locations of the hydrofoil,are carefully studied to validate *** is found that not only these characteristics mentioned above accord well with the experimental results,but also some detailed transient flow information is depicted,including the re-entrant jet flow that caused the shedding of the cavity,and the phenomenon of two-peak pressure fluctuation in the vicinity of the cavity closure in a *** numerical results validate the capability of DCM for the application of modeling the complicated unsteady cavitating flow.

关键词：非定常流动空化模型空泡流验证压力变化 DCM 不稳定物理过程