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International Journal of Ophthalmology(English edition) 2024年第6期17卷 1120-1127页

作者： da-Wen wu Fei-Peng Jiang Ge Ge Mei-Xia Zhang Department of Ophthalmology West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Research Laboratory of Macular Disease West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina

AIM:To investigate the association between central serous chorioretinopathy(CSC)and Helicobacter pylori(Hp)by summarizing all available ***:The Scopus,Embase,EBSCO,PubMed,Web of Science,and Cochrane Library databases for all relevant studies published from inception to October 2022 were searched,and manually searched for relevant reference lists as a *** investigating the association between CSC and Hp infection were ***,8 case-control studies were included in the Meta-analysis after study ***:The results showed no significant correlation between Hp infection and CSC[odds ratio(OR)1.89,95%confidential interval(CI)0.58–6.15,I2=96%,P=0.29].After subgroup analysis based on the degree of development of the study(developing/developed countries),it was found that the results of the two subgroups were the same as the whole,and no significant difference between the two subgroups ***-regression showed that the effect of sample size on heterogeneity among studies was more prominent(P<0.01,adjusted R^(2)=89.72%),which can explain 89.72%of the sources of ***:This Meta-analysis reveals no significant correlation between Hp infection and CSC,which still warrants further well-designed extensive sample studies to reach a more reliable conclusion and promote a better understanding of the treatment of CSC.

关键词： central serous chorioretinopathy Helicobacter pylori infection retinal diseases Meta-analysis

Application of ^(18)F-fluorodeoxyglucose positron emission tomography/computed tomography imaging in recurrent anastomotic tumors after surgery in digestive tract tumors

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World Journal of Gastrointestinal Surgery 2024年第8期16卷 2474-2483页

作者： Deng-Feng Ge Hao Ren Zi-Chen Yang Shou-Xiang Zhao Zhen-Ting Cheng da-da wu Bin Zhang Department of Cardiothoracic Surgery Nanjing University of Chinese MedicineNanjing 210023Jiangsu ProvinceChina Department of Gastrointestinal Surgery Shanghai Sixth People’s HospitalShanghai 250063China

BACKGROUND This study was to investigate the application value of whole-body dynamic ^(18)F-fluorodeoxyglucose(FDG)positron emission tomography/computed tomogra-phy(PET/CT)imaging in recurrent anastomotic tumors of digestive tract after gastric and esophageal cancer *** patients with gastric and esophageal cancer have a high risk of tumor recurrence,and traditional imaging methods have certain limitations in early detection of recurrent ***-body dynamic ^(18)F-FDG PET/CT imaging,due to its high sensitivity and specifi-city,can provide comprehensive information on tumor metabolic activity,which is expected to improve the early diagnosis rate of postoperative recurrent tumors,and provide an important reference for clinical treatment *** A retrospective analysis was performed on 53 patients with upper digestive tract tumors after operation and systemic dynamic ^(18)F-FDG PET/CT imaging indi-cating abnormal FDG uptake by anastomosis,including 29 cases of gastric cancer and 24 cases of esophageal *** to the follow-up results of gas-troscopy and other imaging examinations before and after PET/CT examination,the patients were divided into an anastomotic recurrence group and anastomotic inflammation *** multi-parameter analysis software was used to obtain the metabolic rate(MRFDG),volume of distribution maximum(DVmax)of anastomotic lesions,and MRmean and DVmean of normal liver *** lesion/background ratio(LBR)was calculated by dividing the MRFDG and DVmax of the anastomotic lesion by the MRmean and DVmean of the normal liver tissue,respectively,to obtain LBR-MRFDG and *** independent sample t test was used for statistical analysis,and a receiver operating characteristic curve was used to analyze the differential diagnostic efficacy of each parameter for anastomotic recurrence and *** The dynamic ^(18)F-FDG PET/CT imaging parameters MRFDG,DVmax,LBR-MRFDG,and LBR-DVmax of post

关键词： Gastric cancer Esophageal cancer Anastomosis Dynamic positron emission tomography Differential diagnosis Metabolic rate

Applications of deep learning for detecting ophthalmic diseases with ultrawide-field fundus

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International Journal of Ophthalmology(English edition) 2024年第1期17卷 188-200页

作者： Qing-Qing Tang Xiang-Gang Yang Hong-Qiu Wang da-Wen wu Mei-Xia Zhang Department of Ophthalmology and Research Laboratory of Macular Disease West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Hong Kong University of Science and Technology(Guangzhou) Guangzhou 511400Guangdong ProvinceChina

AIM:To summarize the application of deep learning in detecting ophthalmic disease with ultrawide-field fundus images and analyze the advantages,limitations,and possible solutions common to all ***:We searched three academic databases,including PubMed,Web of Science,and Ovid,with the date of August *** matched and screened according to the target keywords and publication year and retrieved a total of 4358 research papers according to the keywords,of which 23 studies were retrieved on applying deep learning in diagnosing ophthalmic disease with ultrawide-field ***:Deep learning in ultrawide-field images can detect various ophthalmic diseases and achieve great performance,including diabetic retinopathy,glaucoma,age-related macular degeneration,retinal vein occlusions,retinal detachment,and other peripheral retinal *** to fundus images,the ultrawide-field fundus scanning laser ophthalmoscopy enables the capture of the ocular fundus up to 200°in a single exposure,which can observe more areas of the ***:The combination of ultrawide-field fundus images and artificial intelligence will achieve great performance in diagnosing multiple ophthalmic diseases in the future.

关键词： ultrawide-field fundus images deep learning disease diagnosis ophthalmic disease

Alternating spin splitting of electronic and magnon bands in two-dimensional altermagnetic materials

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Chinese Physics B 2024年第9期33卷 194-198页

作者： Qian Wang da-Wei wu Guang-Hua Guo Meng-Qiu Long Yun-Peng Wang School of Physics Central South UniversityChangsha 410083China

Unconventional antiferromagnetism dubbed as altermagnetism was first discovered in rutile structured magnets,which is featured by spin splitting even without the spin–orbital coupling *** interesting phenomenon has been discovered in more altermagnetic *** this work,we explore two-dimensional altermagnetic materials by studying two series of two-dimensional magnets,including MF4 with M covering all 3d and 4d transition metal elements,as well as TS2 with T=V,Cr,Mn,*** the magnetic symmetry operation of RuF4 and MnS2,it is verified that breaking the time inversion is a necessary condition for spin *** on symmetry analysis and first-principles calculations,we find that the electronic bands and magnon dispersion experience alternating spin splitting along the same *** work paves the way for exploring altermagnetism in two-dimensional materials.

关键词： two-dimensional altermagnetic materials altermagnetism spin splitting first-principles calculations

Image Steganography by Pixel-Value Differencing Using General Quantization Ranges

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Computer Modeling in Engineering & Sciences 2024年第10期141卷 353-383页

作者： da-Chun wu Zong-Nan Shih Department of Computer and Communication Engineering National Kaohsiung University of Science and TechnologyKaohsiung824005TaiwanChina

A new steganographic method by pixel-value differencing(PVD)using general quantization ranges of pixel pairs’difference values is *** objective of this method is to provide a data embedding technique with a range table with range widths not limited to powers of 2,extending PVD-based methods to enhance their flexibility and data-embedding rates without changing their capabilities to resist security ***,the conventional PVD technique partitions a grayscale image into 1×2 non-overlapping *** entire range[0,255]of all possible absolute values of the pixel pairs’grayscale differences in the blocks is divided into multiple quantization *** width of each quantization range is a power of two to facilitate the direct embedding of the bit information with high embedding *** using power-of-two range widths,the embedding rates can drop using conventional embedding *** contrast,the proposed method uses general quantization range widths,and a multiple-based number conversion mechanism is employed skillfully to implement the use of nonpower-of-two range widths,with each pixel pair being employed to embed a digit in the multiple-based *** the message bits are converted into a big multiple-based number whose digits can be embedded into the pixel pairs with a higher embedding *** experimental results showed the feasibility of the proposed method and its resistance to security *** addition,implementation examples are provided,where the proposed method adopts non-power-of-two range widths and employsmultiple-based number conversion to expand the data-hiding and steganalysis-resisting capabilities of other PVD methods.

关键词： Steganography pixel-value differencing multiple-based number conversion general quantization range

数字时代注意力经济的运演逻辑与人的形式化存在之痛

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经济学家 2024年第6期 35-44页

作者：吴大娟南开大学马克思主义学院

注意力经济是资本主义围绕注意力这一特殊劳动范式而展开的一套全新剥削机制。数字时代信息的爆炸式增长、数字景观的集群构建和时间物体的批量产出合谋共筑,加速对注意力的捕获和收割,是架构注意力经济在场语境的存在性前提。注意力经... 详细信息

注意力经济是资本主义围绕注意力这一特殊劳动范式而展开的一套全新剥削机制。数字时代信息的爆炸式增长、数字景观的集群构建和时间物体的批量产出合谋共筑,加速对注意力的捕获和收割,是架构注意力经济在场语境的存在性前提。注意力经济以资本联袂数字技术撩拨和刺激个体注意力为起点,将个体的“观看”行为转化为创造剩余价值的生产性劳动,并通过对注意力的数字化管控加固注意力经济运行的权力基础,确保了注意力经济由外环到内里加速循环运转。从本质上说,注意力经济是资本主义在数字时代翻新积累方式、谋求价值增殖最大化的产物,其安身立命的生命基因密码依然是资本对感性“活劳动”(注意力劳动)的绝对支配和无偿占有。注意力经济没有根本改变资本逻辑扩张和剥夺的权力本性,它对个体日常生活的渗透和覆盖,给个体带来了形式化存在的痛楚,使个体生命时间断裂,精神世界出现“焦土化”问题。对此,唯有全面激活马克思政治经济学批判的思想遗产,借以澄明资本裹挟注意力经济的假象,才能对数字时代资本褫夺剩余价值的新型方式和人的生存境况有根本性认识,从而敞显超越资本逻辑、复归人之为人的思想道路。

关键词：注意力经济数字时代资本逻辑形式化存在时间精神

Effectiveness and Safety of Qishen Yiqi Dripping Pill in Patients with Acute Coronary Syndrome after Percutaneous Coronary Intervention:3-Year Results from a Multicentre Cohort Study

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Chinese Journal of Integrative Medicine 2024年第10期30卷 877-885页

作者： BAI Rui-na GU Feng CHE Qian-zi ZHANG Xuan CAI Ya-jie XI Rui-xi ZHAO Yang GUO Ming DONG Guo-ju GAO Zhu-ye FU Chang-geng WANG Pei-li DU Jian-peng ZHANG da-wu DUAN Wen-hui LI Li-zhi YANG Qiao-ning SHI da-zhuo Department of Cardiovascular Xiyuan Hospital China Academy of Chinese Medical Sciences National Clinical Research Center for Chinese Medicine Cardiology Department of Evidence-Based Medicine Basic Research Laboratory Institute of Basic Research in Clinical Medicine China Academy of Chinese Medical Sciences Department of Traditional Chinese Medicine Beijing Shangdi Hospital National Medical Products Administration Key Laboratory for Clinical Research and Evaluation of Traditional Chinese Medicine

Objectives: To evaluate the effectiveness and safety of Qishen Yiqi Dripping Pill(QSYQ) in patients with acute coronary syndrome(ACS) after percutaneous coronary intervention(PCI). Methods: This multicentre prospective cohort study was conducted at 40 centers in China. Patients with ACS after PCI entered either the QSYQ or Western medicine(WM) groups naturally based on whether they had received QSYQ before enrollment. QSYQ group received QSYQ(0.52 g, 3 times a day for 12 months) in addition to WM. The primary endpoint included cardiac death, non-fatal myocardial infarction, and urgent revascularization. The secondary endpoint included rehospitalization due to ACS, heart failure, stroke, and other thrombotic events. Quality of life was assessed by the Seattle Angina Questionnaire(SAQ). Results: A total of 936 patients completed follow-up of the primary endpoint from February 2012 to December 2018. Overall, 487 patients received QSYQ and WM. During a median follow-up of 566 days(inter quartile range, IQR, 517–602), the primary endpoint occurred in 46(9.45%) and 65(14.48%) patients in QSYQ and WM groups respectively [adjusted hazard ratio(HR) 0.60, 95% confidence interval(CI) 0.41–0.90; P=0.013]. The secondary endpoint occurred in 61(12.53%) and 74(16.48%) patients in QSYQ and WM groups, respectively(adjusted HR 0.76, 95% CI 0.53–1.09; P=0.136). In sensitivity analysis, the results still demonstrated that WM combined with QSYQ reduced the risk of the primary endpoint(HR 0.67, 95% CI 0.46–0.98; P=0.039). Moreover, QSYQ improved the disease perception domain of the SAQ(P<0.05). Conclusions: In patients with ACS after PCI, QSYQ combined with WM reduced the incidence of the primary endpoint. These findings provide a promising option for managing ACS after PCI and suggest the potential treatment for reducing the risk of primary endpoint included cardiac death, non-fatal myocardial infarction, and urgent revascularization through intermittent administration of QSYQ.(Registra

关键词： Qishen Yiqi Dripping Pill acute coronary syndrome percutaneous coronary intervention primary and secondary endpoint

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气体润滑减阻研究综述

船舶力学 2024年第6期28卷 951-966页

作者：秦世杰季盛伍锐吴大转浙江大学能源工程学院杭州310027 浙江省清洁能源与碳中和重点实验室浙江嘉兴314031 上海船舶运输科学研究所有限公司上海200135 航运技术与安全国家重点实验室上海200135

在我国“碳达峰、碳中和”战略背景下,气体润滑减阻作为一种流动控制节能与降碳方法,可有效降低船舶航行阻力,对我国船舶及航运业的低碳发展意义重大。本文介绍了气体润滑减阻研究的国内外背景及意义,阐述了气体润滑减阻的定义及分类方... 详细信息

在我国“碳达峰、碳中和”战略背景下,气体润滑减阻作为一种流动控制节能与降碳方法,可有效降低船舶航行阻力,对我国船舶及航运业的低碳发展意义重大。本文介绍了气体润滑减阻研究的国内外背景及意义,阐述了气体润滑减阻的定义及分类方式,特别是提出了基于气液两相界面形态与减阻机理的离散气泡减阻和连续气层减阻分类方式,并在此基础上分别梳理了离散气泡减阻和连续气层减阻在减阻特性、减阻机理、两相流态及其影响因素等方面的进展情况,总结并展望了气体润滑减阻的研究现状和该领域的未来发展趋势。

关键词：气体润滑离散气泡连续气层减阻节能降碳船舶

Hot carrier cooling in lead halide perovskites probed by two-pulse photovoltage correlation spectroscopy

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Chinese Physics B 2024年第10期33卷 116-119页

作者： Yuqing Huang Chaoyu Guo Lei Gao Wenna Du Haotian Zheng da wu Zhengpu Zhao Chu-Wei Zhang Qin Wang Xin-Feng Liu Qingfeng Yan Ying Jiang International Center for Quantum Materials School of PhysicsPeking UniversityBeijing 100871China Collaborative Innovation Center of Quantum Matter Beijing 100871China Department of Chemistry Tsinghua UniversityBeijing 100084China CAS Key Laboratory of Standardization and Measurement for Nanotechnology National Center for Nanoscience and TechnologyBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Interdisciplinary Institute of Light-Element Quantum Materials and Research Center for Light-Element Advanced Materials Peking UniversityBeijing 100871China

The next-generation hot-carrier solar cells,which can overcome the Shockley-Queisser limit by harvesting excessenergy from hot carriers,are receiving increasing *** halide perovskite(LHP)materials are considered aspromising candidates due to their exceptional photovoltaic properties,good stability and low *** cooling rate of hotcarriers is a key parameter influencing the performance of hot-carrier solar *** this work,we successfully detected hotcarrier dynamics in operando LHP devices using the two-pulse photovoltage correlation *** enhance the signalto-noise ratio,we applied the delay-time modulation method instead of the traditional power *** advancementallowed us to detect the intraband hot carrier cooling time for the organic LHP CH_(3)NH_(3)PbBr_(3),which is as short as 0.21 *** comparison,the inorganic Cs-based LHP CsPbBr_(3)exhibited a longer cooling time of around 0.59 ps due to differentphonon *** results provide us new insights into the optimal design of hot-carrier solar cells and highlightthe potential of LHP materials in advancing solar cell technology.

关键词： two-pulse correlation spectroscopy lead halide perovskites hot carrier cooling ultrafast dynamics

唤醒中华民族共同体意识的历史记忆与认同实践

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民族学刊 2024年第1期15卷 14-20,121页

作者：巫达徐天雨中央民族大学民族学与社会学学院北京100081 四川文理学院巴文化研究院四川达州635002

彝族他留人主要分布在云南省丽江市永胜县和华坪县,是历史文献中“白蛮”的后裔。在族源传说故事中,他留人认为他们与周边的藏族、纳西族、白族、汉族和彝族诺苏人是从兄弟姊妹一家人中分衍而来。宗支节是他留人祭祖的节日,早期仅用于... 详细信息

彝族他留人主要分布在云南省丽江市永胜县和华坪县,是历史文献中“白蛮”的后裔。在族源传说故事中,他留人认为他们与周边的藏族、纳西族、白族、汉族和彝族诺苏人是从兄弟姊妹一家人中分衍而来。宗支节是他留人祭祖的节日,早期仅用于各姓祭祀各自的先祖,外人不得参与。从二十世纪五十年代起,他留人开始利用宗支节祭祀“三百六十户伍”汉人祖先,这一唤醒对“汉人祖先”的记忆过程体现了早期迁徙到云南的汉族人和彝族他留人长期交往交流交融的历史心性与历史事实。他留人从“多族共祖”到“彝汉共祖”的历史记忆与认同实践,是一种对自身起源问题的“再创造”。这使族群的边界得以从历史记忆的维度被消解,而代之以中华民族共同体层面的血脉联结和家园共享,体现出他留人对中华民族和中华文化的认同,呈现了中华民族共同体的形成过程。这个过程是唤醒他留人中华民族共同体意识的过程。彝族他留人的个案,为铸牢中华民族共同体意识的研究、教学和宣传提供了宝贵素材和民族志案例。

关键词：彝族他留人记忆建构文化交融中华民族共同体意识中华民族认同

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