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Single depth image 3D face reconstruction via domain adaptive learning

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Frontiers of Computer Science 2024年第1期18卷 259-261页

作者： Xiaoxu CAI jianwen LOU Jiajun BU Junyu DONG Haishuai WANG Hui YU College of Computer Science and Technology Zhejiang UniversityHangzhou 310013China School of Creative Technologies University of PortsmouthPortsmouth PO12DJUK College of Computer Science and Technology Ocean University of ChinaQingdao 266100China

1 Introduction In this paper,we propose a novel domain-adaptive reconstruction method that effectively leverages deep learning and synthetic data to achieve robust 3D face reconstruction from a single depth *** method applies two domain-adaptive neural networks for predicting head pose and facial shape,*** networks undergo training with a customized domain adaptation strategy,using a combination of auto-labeled synthetic and unlabeled real data.

关键词： networks image learning

一对一全程健康指导对孕产妇分娩方式及新生儿的影响

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中国医药科学 2017年第20期7卷 127-129,142页

作者：庞建文广东省湛江市坡头区人民医院广东湛江524059

目的分析一对一全程健康指导对孕产妇分娩方式及新生儿的影响。方法选取2016年1~10月到我院进行产检及分娩的孕产妇132例,随机分为对照组和干预组,各66例。对照组接受常规分娩护理指导,干预组在常规护理指导基础上实施一对一全程健康指... 详细信息

目的分析一对一全程健康指导对孕产妇分娩方式及新生儿的影响。方法选取2016年1~10月到我院进行产检及分娩的孕产妇132例,随机分为对照组和干预组,各66例。对照组接受常规分娩护理指导,干预组在常规护理指导基础上实施一对一全程健康指导。观察两组护理指导后分娩情况、方式及新生儿情况。结果护理指导后,对照组第一产程、第二产程、总产程、第一产程活跃期VAS评分、产后2h内出血量、剖宫产率分别为(465.39±105.75)min、(55.74±13.92)min、(524.38±102.56)min、(5.68±1.36)分、(186.73±45.67)m L、27.27%,均高于干预组的(368.54±99.51)min、(41.58±10.44)min、(424.36±101.25)min、(5.12±1.29)分、(160.25±36.54)m L、15.15%;对照阴道顺产率、新生儿娩出后1min及5min Apgar评分分别为48.48%、(6.74±1.10)分、(7.27±1.53)分,均低于干预组的66.67%、(7.90±1.23)分、(8.47±1.71)分。两组各观察指标分别比较,差异有统计学意义(P<0.05)。结论在孕产妇中进行一对一全程健康指导可有效改善产妇分娩方式,提高阴道顺产率,提高新生儿健康程度。

关键词：孕产妇分娩方式新生儿状况一对一全程健康指导

Numerical Simulation of Asphaltene Precipitation and Deposition during Natural Gas and CO_(2) Injection

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Fluid Dynamics & Materials Processing 2024年第2期20卷 275-292页

作者： Shasha Feng Yi Liao Weixin Liu jianwen Dai Mingying Xie Li Li Nanhai East Petroleum Research Institute Shenzhen Branch of CNOOC Ltd.Shenzhen518000China

Asphaltene deposition is a signiﬁcant problem during gas injection processes,as it can block the porous medium,the wellbore,and the involved facilities,signiﬁcantly impacting reservoir productivity and ultimate oil *** a few studies have investigated the numerical modeling of this potential effect in porous *** study focuses on asphaltene deposition due to natural gas and CO_(2) *** of the effect of gas injection on asphaltene deposition behavior have been made using a 3D numerical simulation *** results indicate that the injection of natural gas exacerbates asphaltene deposition,leading to a signiﬁcant reduction in permeability near the injection well and throughout the *** reduction in permeability strongly affects the ability of gas toﬂow through the reservoir,resulting in an improvement of the displacement *** displacement efﬁ-ciency of the injection gas process increases by up to 1.40%when gas is injected at 5500 psi,compared to the scenario where the asphaltene model is not ***_(2) injection leads to a miscible process with crude oil,extracting light and intermediate components,which intensiﬁes asphaltene precipitation and increases the viscosity of the remaining crude oil,ultimately reducing the recovery rate.

关键词： Reservoir simulation asphaltenes deposition natural gas injection CO_(2)injection

Impact of Blade-Flapping Vibration on Aerodynamic Characteristics of Wind Turbines under Yaw Conditions

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Energy Engineering 2024年第8期121卷 2213-2229页

作者： Shaokun Liu Zhiying Gao Rina Su Mengmeng Yan jianwen Wang College of Energy and Power Engineering Inner Mongolia University of TechnologyHohhot010051China Key Laboratory of Wind and Solar Energy Utilization Technology Ministry of EducationHohhot010051China

Although the aerodynamic loading of wind turbine blades under various conditions has been widely studied,the radial distribution of load along the blade under various yaw conditions and with blade flapping phenomena is poorly *** study aims to investigate the effects of second-order flapwise vibration on the mean and fluctuation characteristics of the torque and axial thrust of wind turbines under yaw conditions using computational fluid dynamics(CFD).In the CFD model,the blades are segmented radially to comprehensively analyze the distribution patterns of torque,axial load,and tangential *** following results are obtained.(i)After applying flapwise vibration,the torque and axial thrust of wind turbines decrease in relation to those of the rigid model,with significantly increased fluctuations.(ii)Flapwise vibration causes the blades to reciprocate along the axial direction,altering the local angle of attack and velocity of the blades relative to the incoming wind *** results in the contraction of the torque region from a circular shape to a complex“gear”shape,which is accompanied by evident oscillations.(iii)Compared to the tangential load,the axial load on the blades is more sensitive to flapwise vibration although both exhibit significantly enhanced *** study not only reveals the impact of flapwise vibration on wind turbine blade performance,including the reduction of torque and axial thrust and increased operational fluctuations,but also clarifies the radial distribution patterns of blade aerodynamic characteristics,which is of great significance for optimizing wind turbine blade design and reducing fatigue risks.

关键词： Wind turbine CFD numerical simulation aerodynamic characteristics yaw flapping vibration

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新媒体背景下的甘肃旅游形象塑造探究

社科纵横 2023年第1期38卷 141-149页

作者：苏云庞剑文兰州大学管理学院甘肃兰州730000

城市旅游形象研究已经成为学界研究的热点问题,独特、鲜明的旅游形象才能够促进旅游目的地的可持续发展。首先通过品牌形象论、品牌个性论发掘出甘肃各个城市独特的“卖点”;其次引入CIS理论分别从理念、行为和视觉三个方面对甘肃旅游... 详细信息

城市旅游形象研究已经成为学界研究的热点问题,独特、鲜明的旅游形象才能够促进旅游目的地的可持续发展。首先通过品牌形象论、品牌个性论发掘出甘肃各个城市独特的“卖点”;其次引入CIS理论分别从理念、行为和视觉三个方面对甘肃旅游形象进行全方位的塑造,并在原有的甘肃旅游形象基础上进一步细化,整理出甘肃各城市的旅游形象宣传语、标识以及吉祥物;最后针对短视频等新媒体及时、多向传播的特点,提出一些甘肃旅游形象在网络上传播的建议。通过对甘肃旅游形象的塑造探究,不仅可以深化CIS理论在城市形象塑造中的应用,丰富城市旅游形象塑造的理论,而且可以促进甘肃旅游形象的完善,以提高甘肃旅游业在中国旅游业的竞争力。

关键词：新媒体甘肃旅游形象塑造

Small molecule conjugates with selective estrogen receptor β agonism promote anti-aging benefits in metabolism and skin recovery

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Acta Pharmaceutica Sinica B 2024年第5期14卷 2137-2152页

作者： Tarik Zahr Vijay K.Boda Jian Ge Lexiang Yu Zhongzhi Wu jianwen Que Wei Li Li Qiang Naomi Berrie Diabetes Center Columbia UniversityNew YorkNY 10032USA Department of Molecular Pharmacology and Therapeutics Columbia UniversityNew YorkNY 10032USA Department of Pharmaceutical Sciences College of PharmacyUniversity of Tennessee Health Science CenterMemphisTN 38163USA Drug Discovery Center College of PharmacyUniversity of Tennessee Health Science CenterMemphisTN 38163USA Division of Digestive and Liver Diseases Columbia UniversityNew YorkNY 10032USA Center for Human Development Columbia UniversityNew YorkNY 10027USA Department of Pathology and Cell Biology Columbia UniversityNew YorkNY 10032USA Department of Medicine Columbia UniversityNew YorkNY 10032USA

Estrogen is imperative to mammalian reproductivity,metabolism,and ***,the hormone activating estrogen receptor(ERs)αcan cause major safety concerns due to the enrichment of ERαin female tissues and certain *** contrast,ERβis more broadly expressed in metabolic tissues and the ***,it is desirable to generate selective ERβagonist conjugates for maximizing the therapeutic effects of ERs while minimizing the risks of ERα***,we report the design and production of small molecule conjugates containing selective non-steroid ERβagonists Gtx878 or *** of aged mice with our synthesized conjugates improved aging-associated declines in insulin sensitivity,visceral adipose integrity,skeletal muscle function,and skin health,with validation in *** further uncovered the benefits of ERβconjugates in the skin using two inducible skin injury mouse models,showing increased skin basal cell proliferation,epidermal thickness,and wound ***,our ERβ-selective agonist conjugates offer novel therapeutic potential to improve aging-associated conditions and aid in rejuvenating skin health.

关键词： Estrogen receptorβ Aging Metabolism Skin injury Muscle metabolism Small molecule conjugates Regeneration Adiposity

Nanoimprint-induced strain engineering of two-dimensional materials

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Microsystems & Nanoengineering 2024年第2期10卷 323-332页

作者： Chuying Sun jianwen Zhong Zhuofei Gan Liyang Chen Chuwei Liang Hongtao Feng Zhao Sun Zijie Jiang Wen-Di Li The University of Hong Kong Hong KongChina

The high stretchability of two-dimensional(2D)materials has facilitated the possibility of using external strain to manipulate their ***,strain engineering has emerged as a promising technique for tailoring the performance of 2D materials by controlling the applied elastic strain *** various types of strain engineering methods have been proposed,deterministic and controllable generation of the strain in 2D materials remains a challenging ***,we report a nanoimprint-induced strain engineering(NISE)strategy for introducing controllable periodic strain profiles on 2D materials.A three-dimensional(3D)tunable strain is generated in a molybdenum disulfide(MoS_(2))sheet by pressing and conforming to the topography of an imprint *** strain profiles generated in MoS_(2)are demonstrated and verified by Raman and photoluminescence(PL)*** strain modulation capability of NISE is investigated by changing the imprint pressure and the patterns of the imprint molds,which enables precise control of the strain magnitudes and distributions in MoS_(2).Furthermore,a finite element model is developed to simulate the NISE process and reveal the straining behavior of MoS_(2).This deterministic and effective strain engineering technique can be easily extended to other materials and is also compatible with common semiconductor fabrication processes;therefore,it provides prospects for advances in broad nanoelectronic and optoelectronic devices.

关键词： strain dimensional molybdenum

Constraints of palaeoenvironment on organic matter of Benxi Formation shale and discussion on enrichment mechanism under different facies

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Frontiers of Earth Science 2024年第1期18卷 148-171页

作者： Qianyang HE Delu LI Qiang SUN jianwen GAO Haibin LI Xinhu LI Xiaochen ZHAO Shaofei WANG Gaozhe JI College of Geology and Environment Xi’an University of Science and TechnologyXi’an 710054China Shaanxi Provincial Key Laboratory of Geological Support for Coal Green Exploitation Xi’an University of Science and TechnologyXi’an 710054China Geological Research Institute for Coal Green Mining Xi’an University of Science and TechnologyXi’an 710054China Research Institute of Exploration and Development PetroChina Changqing Oilfield CompanyXi’an 710018China School of Civil Engineering and Architecture Shaanxi University of TechnologyHanzhong 723001China

As a hydrocarbon-rich sedimentary basin in China,the Ordos Basin has enormous potential for shale gas *** shale of the Upper Carboniferous Benxi Formation is rich in organic matter,however,its palaeoenvironment and organic matter enrichment mode are yet to be *** this study,the geochemical characteristics of the shale of the Benxi Formation in the east-central part of the Ordos Basin were analyzed to investigate its *** the same time,the organic matter enrichment modes in different sedimentary facies were compared and *** results indicate that:1)the shale of the Benxi Formation was mainly deposited on the continental margin and strong terrestrial clastic input;2)the deposition period of the Benxi Formation shale had a hot and humid climate with high palaeoproductivity and local volcanic hydrothermal fluid,and a high sedimentation rate with the strong stagnant *** bottom water was in dysoxic conditions and a semi-saline deposition environment;3)multiple factors,such as palaeoproductivity,volcanic hydrothermal,redox conditions,and palaeosalinity interact to influence the enrichment of shale organic matter in Benxi Formation;4)the organic matter enrichment modes of continental,marine-continental transitional,and marine shales can be classified into three types:“production mode”,“hybrid mode of preservation and production”,and“preservation mode”,*** study provides a reference for the organic matter enrichment mode,shale gas formation conditions,and core area evaluation in these marine-continental transitional shales,and also offers new guidance for exploration ideas for shale gas in different sedimentary facies.

关键词： Benxi Formation shale palaeoenvironment organic matter enrichment facies

Mitigation of N_(2)O emissions in water-saving paddy fields:Evaluating organic fertilizer substitution and microbial mechanisms

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Journal of Integrative Agriculture 2024年第9期23卷 3159-3173页

作者： Delei Kong Xianduo Zhang Qidong Yu Yaguo Jin Peikun Jiang Shuang Wu Shuwei Liu jianwen Zou College of Environment and Resources/College of Carbon Neutrality Zhejiang A&F UniversityHangzhou 311300China Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation College of Resources and Environmental SciencesNanjing Agricultural UniversityNanjing 210095China Department of Biochemistry and Molecular Biology College of Life SciencesNanjing Agricultural UniversityNanjing 210095China Jiangsu Key Lab and Engineering Center for Solid Organic Waste Utilization Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource UtilizationNanjing Agricultural UniversityNanjing 210095China

Water-saving irrigation strategies can successfully alleviate methane emissions from rice fields,but significantly stimulate nitrous oxide(N_(2)O)emissions because of variations in soil oxygen level and redox ***,the relationship linking soil N_(2)O emissions to nitrogen functional genes during various fertilization treatments in water-saving paddy fields has rarely been ***,the mitigation potential of organic fertilizer substitution on N_(2)O emissions and the microbial mechanism in rice fields must be further *** study examined how soil N_(2)O emissions were affected by related functional microorganisms(ammonia-oxidizing archaea(AOA),ammonia-oxidizing bacteria(AOB),nirS,nirK and nosZ)to various fertilization treatments in a rice field in southeast China over two *** this study,three fertilization regimes were applied to rice cultivation:a no nitrogen(N)(Control),an inorganic N(Ni),and an inorganic N with partial N substitution with organic manure(N_(i)+N_(o)).Over two rice-growing seasons,cumulative N_(2)O emissions averaged 0.47,4.62 and 4.08 kg ha^(−1)for the Control,Ni and N_(i)+N_(o)treatments,*** comparison to the Ni treatment,the N_(i)+N_(o)fertilization regime considerably reduced soil N_(2)O emissions by 11.6%while maintaining rice yield,with a lower N_(2)O emission factor(EF)from fertilizer N of 0.95%.Nitrogen fertilization considerably raised the AOB,nirS,nirK and nosZ gene abundances,in comparison to the Control ***,the substitution of organic manure for inorganic N fertilizer significantly decreased AOB and nirS gene abundances and increased nosZ gene *** AOB responded to N fertilization more sensitively than the *** N_(2)O emissions significantly correlated positively with AOB and nirS gene abundances while having a negative correlation with nosZ gene abundance and the nosZ/nirS ratio across N-fertilized *** summary,we conclude that organic manure substi

关键词： organic manure substitution inorganic fertilizer N_(2)O functional microbe rice paddy