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Hyperspectral image super resolution using deep internal and self-supervised learning

CAAI Transactions on Intelligence Technology 2024年第1期9卷 128-141页

作者： Zhe Liu xian-hua Han Graduate School of Science and Technology for Innovation Yamaguchi UniversityYamaguchiJapan Graduate School of Artificial Intelligence and Science Rikkyo UniversityTokyoJapan

By automatically learning the priors embedded in images with powerful modelling ca-pabilities,deep learning-based algorithms have recently made considerable progress in reconstructing the high-resolution hyperspectral(HR-HS)*** previously collected large-amount of external data,these methods are intuitively realised under the full supervision of the ground-truth ***,the database construction in merging the low-resolution(LR)HS(LR-HS)and HR multispectral(MS)or RGB image research paradigm,commonly named as HSI SR,requires collecting corresponding training triplets:HR-MS(RGB),LR-HS and HR-HS image simultaneously,and often faces dif-ficulties in *** learned models with the training datasets collected simultaneously under controlled conditions may significantly degrade the HSI super-resolved perfor-mance to the real images captured under diverse *** handle the above-mentioned limitations,the authors propose to leverage the deep internal and self-supervised learning to solve the HSI SR *** authors advocate that it is possible to train a specific CNN model at test time,called as deep internal learning(DIL),by on-line preparing the training triplet samples from the observed LR-HS/HR-MS(or RGB)images and the down-sampled LR-HS ***,the number of the training triplets extracted solely from the transformed data of the observation itself is extremely few particularly for the HSI SR tasks with large spatial upscale factors,which would result in limited reconstruction *** solve this problem,the authors further exploit deep self-supervised learning(DSL)by considering the observations as the unlabelled training ***,the degradation modules inside the network were elaborated to realise the spatial and spectral down-sampling procedures for transforming the generated HR-HS estimation to the high-resolution RGB/LR-HS approximation,and then the reconstruction errors of the observations were formulated for mea

关键词： computer vision deep learning deep neural networks hyperspectral image enhancement

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Efficacy and safety of minimally invasive laparoscopic surgery under general anesthesia for ovarian cancer

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World Journal of Clinical Cases 2024年第9期12卷 1569-1577页

作者： xian Qin Chen Chen Yang Liu xian-Hong hua Jia-Yi Li Meng-Jie Liang Fang Wu Department of Anesthesiology The First People's Hospital of Jiangxia DistrictWuhan 430200Hubei ProvinceChina Department of Obstetrics and Gynecology The First People's Hospital of Jiangxia DistrictWuhan 430200Hubei ProvinceChina

BACKGROUND Ovarian cancer is one of the most common malignant tumors in female reproductive system in the world,and the choice of its treatment is very important for the survival rate and prognosis of *** open surgery is the main treatment for ovarian cancer,but it has the disadvantages of big trauma and slow *** the continuous development of minimally invasive technology,minimally invasive laparoscopic surgery under general anesthesia has been gradually applied to the treatment of ovarian cancer because of its advantages of less trauma and quick ***,the efficacy and safety of minimally invasive laparoscopic surgery under general anesthesia in the treatment of ovarian cancer are still *** To explore the efficacy and safety of general anesthesia minimally invasive surgery in the treatment of ovarian *** The clinical data of 90 patients with early ovarian cancer in our hospital were analyzed *** to the different surgical treatment methods,patients were divided into study group and control group(45 cases in each group).The study group received minimally invasive laparoscopic surgery under general anesthesia for ovarian cancer,while the control group received traditional open surgery for ovarian *** European Organization for Research and Treatment of Cancer Quality of Life Questionnaire(EORTC QLQ-C30),clinical efficacy and safety of the two groups were *** The intraoperative blood loss,length of hospital stay,postoperative gas evacuation time,and postoperative EORTC QLQ-C30 score of the study group were significantly better than those of the control group(P<0.05).The incidence of postoperative complications in the study group was significantly lower than in the control group(P<0.05).The two groups had no significant differences in the preoperative adrenocorticotropic hormone(ACTH),androstenedione(AD),cortisol(Cor),cluster of differentiation 3 positive(CD3+),and clu

关键词： Early-stage ovarian cancer Efficacy Minimally invasive Laparoscopy Safety Surgery

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Effect of Ti Particles on the Microstructure and Mechanical Properties of AZ91 Magnesium Matrix Composites

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Acta Metallurgica Sinica(English Letters) 2024年第3期37卷 513-524页

作者： Lu Xiao Ting-Ting Liu Yue Chu Bo Song Jie Zhao xian-hua Chen Kai-Hong Zheng Fu-Sheng Pan College of Materials Science and Engineering Chongqing UniversityChongqing 400044China lntelligent Manufacturing and Automobile School Chongqing College of Electronic EngineeringChongqing 401331China School of Materials and Energy Southwest UniversityChongqing 400715China Science and Technology Research Institute of CNNC 404 Co.LTD Gansu 735100China Institute of New Materials Guangdong Academy of SciencesGuangzhou 510650China

Spherical micro-Ti particle(TiP)-reinforced AZ91 magnesium alloy composites were fabricated by semi-solid stirring assisted ultrasonic vibration,which were then subjected to hot *** microstructure results showed that the addition of Ti particles refined the grain size and decreased the texture intensity of the as-extruded AZ91 *** Al3Ti phase with a thickness of 100 nm formed at the Ti/Mg interface,which had a non-coherent relationship with the magnesium *** as-extruded 1 vol.%TiP/AZ91 composite exhibited the best comprehensive mechanical properties,with yield strength,ultimate tensile strength,and elongation at break of 366 MPa,456 MPa,and 14.6%,respectively,which were significantly higher than those of the AZ91 ***,the addition of Ti particles can improve the strength and ductility of the AZ91 alloy,demonstrating the value of magnesium matrix composites for commercial applications.

关键词： Magnesium matrix composites Ti particles Interface Mechanical properties

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Three-stage niobium mineralization at Bayan Obo, China

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National Science Review 2024年第4期11卷 102-110页

作者： Yan Yu Yang Li Yu Liu Xiao-Xiao Ling Li-Guang Wu Li Yang Lan Yang Bo Yang Yong-Gang Zhao xian-hua Li State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences College of Earth and Planetary Science University of Chinese Academy of Sciences Ministry of Education Key Laboratory of Orogenic Belts and Crustal Evolution School of Earth and Space SciencesPeking University Mining Research Institute Baotou Iron and Steel(Group) Co.LTD State Key Laboratory of Baiyunobo Rare Earth Resource Research and Comprehensive Utilization

The Chinese Bayan Obo deposit is a world-class rare earth element(REE) deposit with considerable niobium(Nb) and iron(Fe) resources. A complete genetic understanding on all metals is fundamental for establishing genetic models at Bayan Obo. With extensive research being focused on REE enrichment, the timing and controls of Nb enrichment remain unresolved at Bayan Obo, which is mainly due to the challenges in dating, i.e. multistage thermal events, fine-grained minerals with complex textures and the rare occurrence of uranium-enriched minerals with mature dating methods. Based on robust geological and petrographic frameworks, here we conducted ion probe uranium-lead(U-Pb) dating of ferrocolumbite to unravel the timing, hence the genesis of Nb mineralization. Three types of hydrothermal ferrocolumbites—key Nb-bearing minerals—are identified based on their textures and mineral assemblages. They yield U-Pb ages of 1312 ± 47 Ma(n = 99), 438 ± 7 Ma(n = 93), and 268 ± 5 Ma(n = 19), respectively. In line with deposit geology, we tentatively link the first, second and third stage Nb mineralization to Mesoproterozoic carbonatite magmatism, ubiquitous early Paleozoic hydrothermal activity, and Permian granitic magmatism, respectively. While quantifying the contribution of metal endowment from each stage requires further investigation, our new dates highlight that multi-stage mineralization is critical for Nb enrichment at Bayan Obo, which may also have implications for the enrichment mechanism of Nb in REE deposits in general.

关键词： niobium mineralization U-Pb dating ferrocolumbite Bayan Obo

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Integrated gut microbiota,plasma metabolomics and network pharmacology to reveal the anti-ischemic stroke effect of cooked rhubarb

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Traditional Medicine Research 2024年第9期9卷 1-13页

作者： Ting Li Lan-Fang Tan Lin Shen Jie-Hui Kuang Si-Kai Zhan Bang Liu Jia-Le Cai Sheng-Wang Liang Ming-hua xian Shu-Mei Wang School of Chinese Materia Medica Guangdong Pharmaceutical UniversityGuangzhou 510006China Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of TCM School of Chinese Materia MedicaGuangdong Pharmaceutical UniversityGuangzhou 510006China Engineering&Technology Research Center for Chinese Materia Medica Quality of the Universities of Guangdong Province School of Chinese Materia MedicaGuangdong Pharmaceutical UniversityGuangzhou 510006China Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization Guangxi Institute of BotanyChinese Academy of SciencesGuilin 541006China Traditional Chinese Medicine Resource Germplasm Bank Management Center Yunfu 527300China

Background:Cooked rhubarb(CR)is obtained by steaming raw rhubarb(Rheum palmatum L.,Rheum officinale Baill.,or Rheum tanguticum *** Balf.)with millet *** is used as a traditional Chinese medicine for treating cerebral stroke,where patients often face severe *** study explored the pharmacological effects and mechanisms of CR against ischemic stroke(IS)in *** used integrated analysis of gut microbiota,metabolomics,and network ***:The compounds in CR were identified using LC-MS/*** impact of CR on rat middle cerebral artery occlusion/reperfusion(MCAO/R)-induced cerebral infarct size and brain tissue pathology was assessed through 2,3,5-triphenyl tetrazolium chloride and HE *** in hemorheology were measured by evaluating blood viscosity,and serum levels of pro-inflammatory cytokine were also *** microbiota composition was analyzed through 16S rRNA gene *** metabolites were examined using untargeted metabolomics and Spearman correlation *** pseudo-germ-free test was used to determine whether tumour necrosis factor-α(TNF-α)and interleukin-1β(IL-1β)improvement in IS are dependent on gut ***:In vivo studies showed CR enhances neurobehavioral function in MCAO/R rats and reduces cerebral infarction *** also ameliorates brain and intestinal barrier damage caused by *** also decreased inflammation and oxidative stress in IS ***,CR promotes the growth of Akkermansia and Verrucomicrobia,aiding in intestinal barrier ***,CR primarily influences the primary bile acid biosynthesis *** pseudo-germ-free experiment and network pharmacology confirmed TNF-αand IL-1βas potential *** relies on gut microbiota for its anti-inflammatory effects to improve ***:Cooked rhubarb offers neuroprotective benefits by enhancing beneficial bacteria abundance and regulating bile acid *** emerges as a potential therapeutic agent for

关键词： cooked rhubarb ischemic stroke gut microbiota metabolomics

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Integrated network pharmacology and metabolomics to explore the mechanisms of Shenzao dripping pill against chronic myocardial ischemia

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Traditional Medicine Research 2024年第11期9卷 12-26页

作者： Jie-Hui Kuang Tao Hu Lu-Yong Zhang Yu-Feng Yao Ming-hua xian Shu-Mei Wang School of Chinese Materia Medica Guangdong Pharmaceutical UniversityGuangzhou 510006China Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of Traditional Chinese Medicine Guangdong Pharmaceutical UniversityGuangzhou 510006China Engineering&Technology Research Center for Chinese Materia Medica Quality of the Universities of Guangdong Province Guangdong Pharmaceutical UniversityGuangzhou 510006China Guangzhou Key Laboratory of Construction and Application of New Drug Screening Model Systems Guangdong Pharmaceutical UniversityGuangzhou 510006China Traditional Chinese Medicine Resource Germplasm Bank Management Center Yunfu 527500China.

Background:Shenzao dripping pill(SZDP)is empirically prescribed for treating cardiac ***,there is a lack of comprehensive knowledge regarding the underlying mechanisms contributing to its therapeutic *** objective of this study is to investigate the underlying mechanism of SZDP against chronic myocardial ischemia(CMI)in a rat ***:In this study,we utilized electrocardiographic and echocardiographic detection along with pathological tissue analysis to evaluate the efficacy of *** integration of network pharmacology and metabolomics was conducted to investigate the *** docking and molecular dynamics simulations were used to validate the binding energy between the compounds of SZDP and the associated ***:The results showed that SZDP was able to improve T wave voltage,reverse CMI abnormalities in ejection fraction and fractional shortening,and restore histopathological heart *** results indicated that disturbances of metabolic profile in CMI rats were partly corrected after SZDP administration,mainly affecting purine metabolism.13-Docosenamide may be the potential metabolic biomarker of the therapeutic application of SZDP for *** network pharmacology and metabolomics,thiopurine S-methyltransferase(TPMT),xanthine dehydrogenase/oxidase(XDH),bifunctional purine biosynthesis protein ATIC(ATIC),and cytochrome p4501A1(CYP1A1)were identified as possible targets of SZDP to exert therapeutic effects by enhancing the metabolic levels of L-Tryptophan,Deoxyribose 1-phosphate and Phosphoribosyl ***:SZDP has a therapeutic effect on CMI by regulating metabolite levels,acting on the targets of TMPT,XDH,ATIC,and CYP1A1,and reducing cardiomyocyte injury and myocardial fibrosis.

关键词： chronic myocardial ischemia metabolomics network pharmacology serum metabolites Shenzao dripping pill

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类嫦娥五号玄武岩的非克里普贡献年轻月球陨石

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Science Bulletin 2024年第5期69卷 601-605页

作者：许晶瑶李秋立路凯李献华 State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring(Ministry of Education) School of Geosciences and Info-PhysicsCentral South UniversityChangsha 410083China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China

Lunar basalts offer key insights into the magmatic and thermal evolution of the *** constraints deduced from the Apollo and Luna mission samples,as well as lunar meteorites,had previously suggested that lunar volcanism occurred as early as ca.≥4.37 billion years ago(Ga)[1]and ceased around 2.9-2.8 Ga[2],with two major pulses occurring in 3.95-3.58 and 3.38-3.08 Ga[3].But analysis of lunar basaltic samples recently returned by the Chang’e-5 mission reveals 2-billion-year-old volcanism on the Moon,representing the youngest lunar basalts reported to date[4,5].One of the most popular hypotheses for the cause of longlived volcanism on the Moon is that the source region for young lunar volcanism was enriched in radioactive heat-producing elements[2,6].Lunar samples from 3.5 to 3.0 Ga exhibit a gradual increase in the potassium,rare-earth elements,and phosphorus(KREEP)-like component contribution[3],consistent with the radioactive heat-producing elements ***,the demonstrably non-KREEP origin for the 2-billion-year-old Chang’e-5 basalts implies a possible transition in lunar volcanism away from a KREEP-like component contribution occurred between 3.0 and 2.03 Ga[7].Therefore,studying the characteristics and origin of magmatic activity during the period from 3.0 to2.03 Ga is essential to address the timing of the possible transition and to thus extend our understanding of sustaining long-lived volcanism on the ***,this goal is currently hampered by limited available lunar materials.

关键词： magmatic origin basalt

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铁路隧道二衬纵向连续灌注施工技术研究

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价值工程 2024年第6期43卷 90-92页

作者：鲜云华中铁十二局集团第三工程有限公司太原030024

铁路隧道纵向灌浆施工通常是在隧道顶部预留垂直灌浆孔进行砼注入,易出现背后脱空、厚度不足和不密实等衬砌质量缺陷。为了解决上述技术难题,依托格莱村隧道工程,阐明了隧道纵向灌注施工工艺原理,梳理了施工关键技术,并结合现场实际施... 详细信息

铁路隧道纵向灌浆施工通常是在隧道顶部预留垂直灌浆孔进行砼注入,易出现背后脱空、厚度不足和不密实等衬砌质量缺陷。为了解决上述技术难题,依托格莱村隧道工程,阐明了隧道纵向灌注施工工艺原理,梳理了施工关键技术,并结合现场实际施工效果和有限元数值模拟进行技术验证。结果表明:采用旋转式灌注孔堵头封堵装置,实现了退枪过程的带压封堵,确保了顶拱浇注的密实性;采用顶位水平连续后退漫淹式纵向连续灌注技术,使混凝土在重力作用下自流填充均匀密实,解决了传统工艺存在的厚度不足和脱空技术难题;数值模拟结果显示二衬各截面安全系数均大于规范值3.6,进一步验证了二衬纵向连续灌注施工技术的安全可行性。

关键词：铁路隧道背后脱空混凝土密实性纵向连续灌浆冲顶式灌注

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综合超前地质预报技术在格莱村隧道中的应用

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价值工程 2024年第7期43卷 56-58页

作者：鲜云华中铁十二局集团第三工程有限公司太原030024

随着我国西南地区岩溶隧道建设数量的逐年增加,隧道施工过程中经常遇见坍塌掉块、突水涌泥等病害,给隧道施工造成了较大的困扰。因此,利用地质调查法、地质雷达法、地震波反射法、超前钻探法、综合预报法相结合的综合超前地质预报技术,... 详细信息

随着我国西南地区岩溶隧道建设数量的逐年增加,隧道施工过程中经常遇见坍塌掉块、突水涌泥等病害,给隧道施工造成了较大的困扰。因此,利用地质调查法、地质雷达法、地震波反射法、超前钻探法、综合预报法相结合的综合超前地质预报技术,对格莱村隧道掌子面前方及洞周影响范围内的工程地质特性和水文地质条件进行勘探,以确保岩溶隧道施工安全。结果表明:格莱村隧道综合超前地质预报效果良好,充分发挥了各超前地质预报方法的优势,提高了超前地质预报的精准度,有效预防了坍塌、掉块、突水、突泥等地质灾害的发生,降低了岩溶隧道的施工风险。

关键词：岩溶隧道突水涌泥病害综合超前地质预报隧道施工安全

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数字化转型对企业收入分配的影响研究

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西部论坛 2024年第1期34卷 63-80页

作者：张鲜华秦东升杨阳兰州财经大学会计学院武汉大学政治与公共管理学院

采用沪深A股上市公司2011—2021年数据的分析表明：数字化转型对企业的总收入、劳动收入份额、管理层与普通员工薪酬差距均具有显著的正向影响，同时显著提高了企业的技术创新水平、高技能和高学历员工占比、风险承担水平，并缓解了企... 详细信息

采用沪深A股上市公司2011—2021年数据的分析表明：数字化转型对企业的总收入、劳动收入份额、管理层与普通员工薪酬差距均具有显著的正向影响，同时显著提高了企业的技术创新水平、高技能和高学历员工占比、风险承担水平，并缓解了企业的融资约束，表明数字化转型具有产出增长效应、结构优化效应和风险加剧效应，从而可以对企业的收入分配产生增加收入、提高劳动收入份额、拉大内部薪酬差距等多维度影响。此外，管理层权力增强会强化数字化转型对薪酬差距的拉大作用。异质性分析发现，数字化转型对企业收入和薪酬差距的影响在国有企业中更为显著，对劳动收入份额的影响在非国有企业中更强，对科技型企业收入分配的影响比非科技型企业更强。分位数回归显示，数字化转型要在达到一定程度后才能显著促进企业收入增长，随着数字化转型程度的提高，数字化转型对企业劳动收入份额的提升作用趋于增强，而对企业内部薪酬差距的拉大作用趋于减弱。因此，应在积极推进企业数字化转型的同时合理约束管理层权力，利用数字化做大“蛋糕”并分好“蛋糕”。

关键词：数字化转型收入分配企业收入劳动收入份额内部薪酬差距管理层权力

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