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Respiratory Flow Rates of Metal Welders Compared to a Population Not Exposed to Metal Welding Dust

Open Journal of Respiratory Diseases 2024年第2期14卷 51-59页

作者： Robert Faomowe Foko Abdou Khadir Sow Awa Ba Mor Diaw Fatoumata Bah Mame Saloum Coly Absa lam Cheikh Diop Aminata Toure Abdoulaye Ba Abdoulaye Samb Arame Mbengue Mathilde Cabral Mamadou Fall Laboratory of Toxicology and Hydrology Faculty of Medicine Pharmacy and Odontostomatology Cheikh Anta Diop University of Dakar Dakar-Fann Senegal Laboratory of Physiology and Functional Exploration Faculty of Medicine Pharmacy and Odontostomatology Cheikh Anta Diop University of Dakar Dakar-Fann Senegal Laboratory of Physiology and Functional Exploration Alioune DIOP University of Bambey Bambey Senegal Laboratory of Physiology UFR of Health Sciences Functional Exploration Department Thies Regional Hospital Center Thies Senegal

Background: The welding trade includes many industrial activities in both the formal and informal sectors. Workers in this professional environment do not have access to individual and collective means of protection adapted to the activity, which exposes them to the dust emitted during their activity and therefore contributes to increasing the risk of developing respiratory disorders in this population. Objective: Our study aimed to evaluate the ventilatory function of metal welders in the city of Dakar. Method: This was a comparative study based on the analysis of the spirometric parameters of metal welders working in the city of Dakar (Senegal) with those of a control group of the same kind, selected from the general population. Measurements of forced expiratory volume in the first second (FEV1), forced vital capacity (FVC), peak expiratory flow (PEF) and maximum mid expiratory flow (MMEF) were measured. Results: A total of 75 men between the ages of 19 and 61 were recruited and divided into two groups (43 controls and 32 welders). The welding population had more frequent distal and central obstructions and pulmonary restriction compared to the control group. The metals most commonly used by welders were aluminum for welders who had an obstruction, while for those who had a restriction, iron was the most used metal. Signs of metal fever were frequently found in welders, especially those with ventilatory disorders. Conclusion: The prevalence of respiratory disorders observed is close to that observed in industrial environments, where exposure levels are the highest. The lack of personal protective equipment could also be a significant risk factor in the development of these disorders.

关键词： Welder Occupational Exposure Spirometric Disorder Metal Fever Dakar

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中国音乐学的一面镜子

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音乐探索 2024年第4期 8-14页

作者：林萃青美国密歇根大学音乐舞蹈戏剧学院密歇根大学孔子学院

该文写于21世纪初赵如兰教授《宋代音乐资料及其诠释》一书由香港中文大学出版社再版之际,并作为序文刊于书中。文章立足于全球化的学术视野,对赵著既区别于中国传统及当代学术研究,又挑战西方学者有关中国古代音乐的概念与译谱方法,这... 详细信息

该文写于21世纪初赵如兰教授《宋代音乐资料及其诠释》一书由香港中文大学出版社再版之际,并作为序文刊于书中。文章立足于全球化的学术视野,对赵著既区别于中国传统及当代学术研究,又挑战西方学者有关中国古代音乐的概念与译谱方法,这一独特研究风格及学术贡献,予以了深入的剖析和阐述。作者以赵著为个案,说明每一篇音乐学研究的成果都有其背后的条件和考虑,其受容亦有作者所不能控制的时代因素,倡导开放性地解读学术著作,较多地把握著作的写作背景,理解著作所说的和想说但没有说的信息。

关键词：赵如兰《宋代音乐资料及其诠释》书评古谱解译

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Treating acute low back pain with acupuncture:A randomized controlled study protocol to compare the effectiveness between distal and local acupoints

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Journal of Traditional Chinese Medical Sciences 2024年第3期11卷 351-356页

作者： Singleung Chan Shukyan lam Sinyin Ho Wanyi Au Poyi Lin Waiming Chan Taking Yu Shungchi Tam Bacon F.L.Ng Linda L.D.Zhong Pok Oi Hospital Hong Kong Baptist University Chinese Medicine Clinic Cum Training and Research CentreHong Kong 999077China Chinese Medicine Department Hong Kong Hospital AuthorityHong Kong 999077China School of Chinese Medicine Hong Kong Baptist UniversityHong Kong 999077China School of Biological Sciences Nanyang Technological University637551Singapore

Objective To compare the efficacy of using“distal acupoints only”vs.“local acupoints mainly combined with distal acupoints”in cases of acute low back pain(ALBP).Methods A total of 102 eligible patients aged 18–65 years with ALBP lasting less than 6 weeks will be randomized in a 1:1 ratio to the distal acupoints only group(DPOG)and the local acupoints mainly combined with the distal acupoints group(LPMG).During a 4-week treatment period,patients in the DPOG will receive acupuncture at distal acupoints only(Houxi[Si 3]and Yaotongxue[EX-UE 7])twice a week,while those in the LPMG group will receive acupuncture at local acupoints(mainly Shenshu[BL 23]and Dachangshu[BL 25])combined with distal points(Weizhong[BL 40]).The patients in both groups will be evaluated at every session of treatment,and the follow-up will be performed for 3 *** primary outcome measure will be the change in ALBP intensity,assessed using visual analogue scale scores before and after *** secondary outcome measure will be the evaluation of functional disability using the Oswestry Disability *** This study compares the DPOG and LPMG to explore the feasibility of the DPOG in the treatment of ALBP.

关键词： Acupuncture Acute low back pain Motion style acupuncture Activating qi acupuncture Distal acupoints Local acupoints

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中国诗乐原真表演的多样性及其建设性分析与论证

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音乐探索 2024年第3期 3-13页

作者：林萃青美国密歇根大学音乐学院

作者指出,《诗经》不单是一部从孔子时代就延绵不断地被传承到现在的中国经典,也是中国历史、文化、文学和歌舞表演交汇发展的一个代名词;《诗经》歌词不单是优美的诗篇,也是中国先人的社会生活、个人感受的历史纪事。它保留了不少先秦... 详细信息

作者指出,《诗经》不单是一部从孔子时代就延绵不断地被传承到现在的中国经典,也是中国历史、文化、文学和歌舞表演交汇发展的一个代名词;《诗经》歌词不单是优美的诗篇,也是中国先人的社会生活、个人感受的历史纪事。它保留了不少先秦歌舞礼仪表演的印记,明确说明《诗经》表演是文字歌舞三位一体的多媒体表演艺术。文章通过原真表演的概念及其中国实践、诗乐表演的文献资料及其宏观微观解读、诗经歌曲表演的历史和表演方式的分类,以及现代诗乐表演原真表现的分类与评估几个部分,思考和探讨了重新听到看到先秦《诗经》歌舞表演原真面目的理论架构与实践的可能性。期待《诗经》能够以多样多义的原真形态重现于21世纪的当下。

关键词：《诗经》诗乐先秦乐舞古乐的原真性表演

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Functional role of TRPV4-SKCa3 coupling in vascular endothelial cells in normal and streptozotocin-induced diabetic rats

Functional role of TRPV4-SKCa3 coupling in vascular endothel...

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第九届全国钙信号和细胞功能研讨会

作者： Francis Fu-yuen lam School of Biomedical Sciences Chinese University of Hong KongHong KongChina

One of best studied mechanisms for the endothel ium-dependent hyperpolarization involves two populations of endothelial cell Kchannels,the small conductance and intermediate conductance Ca-activated Kchannels(SKca and iKca),respectively. Ca entry stimulates these channels,resulting in the membrane hyperpolarization of both endothelial cells and underlying smooth muscle *** the present study,we investigated the interaction of SKca3 with a Ca entry channel TRPV4 in endothel ial ***-immunoprecipitation and sub-cellular Co-1ocalization experiments showed that

关键词： Cell=endothelial cells Method=electrophysiology Topic=vascular tone

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The impact of post-operative atrial fibrillation on outcomes in coronary artery bypass graft and combined procedures

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Journal of Geriatric Cardiology 2021年第5期18卷 319-326页

作者： Yau-lam Alex Chau Ji Won Yoo Ho Chuen yuen Khalid Bin Waleed Dong Chang Tong Liu Fang Zhou Liu Gary Tse Sharen Lee Ka Hou Christien Li Faculty of Pharmaceutical Sciences University of British ColumbiaBritish ColumbiaCanada Department of Medicine and Geriatrics Princess Margaret HospitalHong KongChina Department of Cardiology Fuwai Hospital Chinese Academy of Medical Sciences ShenzhenShenzhenChina institute of Biomedicine and Biotechnology Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhenChina Xiamen Cardiovascular Hospital Xiamen UniversityXiamenChina Tianjin Key Laboratory of ionic-Molecular Function of Cardiovascular Disease Department of CardiologyTianjin Institute of CardiologyThe Second Hospital of Tianjin Medical UniversityTianjinChina Department of Cardiology Guangdong Cardiovascular InstituteGuangdong Provincial People's HospitalGuangdong Academy of Medical SciencesGuangzhouChina Faculty of Health and Medical Sciences University of SurreyGU27ALGuildfordUnited Kingdom Cardiovascular Analytics Group Laboratory of Cardiovascular PhysiologyHong KongChina Arrowe Park Acute Stroke Unit Wirral University Teaching Hospital NHS Foundation TrustWirralUK

BACKGROUND Postoperative atrial fibrillation(POAF)is a common yet understudied clinical issue after coronary artery bypass graft(CABG)leading to higher mortality rates and *** systematic review and metaanalysis evaluated the rates of adverse outcomes between patients with and without POAF in patients treated with CABG or combined *** The search period was from the beginning of PubMed and Embase to May 18th,2020 with no language *** inclusion criteria were:(1)studies comparing new onset atrial fibrillation before or after revascularization *** new onset AF before or after *** outcomes assessed included allcause mortality,cardiac death,cerebral vascular accident(CVA),myocardial infarction(Mi),repeated revascularization,major adverse cardiac event(MACE),and major adverse cardiac and cerebrovascular events(MACCEs).RESULTS Of the 7,279 entries screened,11 studies comprising of 57,384 patients were *** to nonPOAF,POAF was significantly associated with higher risk of allcause mortality(Risk Ratio(RR)=1.58;95%Confidence interval(Ci):1.42−1.76,Pith accompanying high level of heterogeneity(i^(2)=62%).Conclusions Patients with POAF after CABG or combined procedures are at an increased risk of allcause mortality or ***,POAF after such procedures should be closely monitored and treated judiciously to minimize risk of further *** there are studies on POAF versus no POAF on outcomes,the heterogeneity suggests that further studies are needed.

关键词： bypass fibrillation mortality

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Phase change memory

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Science China(information Sciences) 2011年第5期54卷 1061-1072页

作者： lam Chung iBM Research T.J. Watson Research Center Yorktown Heights New York 10598 USA

Phase change memory (PCM) is a non-volatile solid-state memory technology based on the large resistivity contrast between the amorphous and crystalline states in phase change materials. We present the physics behind this large resistivity contrast and describe how it is being exploited to create high density PCM. We address the challenges facing this technology, including the design of PCM cells, fabrication, device variability, thermal cross-talk and write disturb. We discuss the scalability, assess the performance, and examine the reliability of PCM including data retention, multi-bit storage and endurance.

关键词： solid state memory non-volatile DRAM flash phase change resistive memory data retention write endurance solid-state drive computer memory

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澳大利亚悉尼华人民间信仰

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艺术与民俗 2024年第1期 54-61页

作者： [马来西亚]蓝姵錂北京大学社会学系

19世纪中叶华南移民以劳工身份前往澳大利亚,陌生与艰辛的异乡环境促使他们通过结社团结同乡和互相帮助。同乡会与庙宇因此诞生,并以解决移民的生老病死作为使命。悉尼的四邑关圣帝庙、要明洪圣宫、天后宫与护国观音庙的历史跨越一个世... 详细信息

19世纪中叶华南移民以劳工身份前往澳大利亚,陌生与艰辛的异乡环境促使他们通过结社团结同乡和互相帮助。同乡会与庙宇因此诞生,并以解决移民的生老病死作为使命。悉尼的四邑关圣帝庙、要明洪圣宫、天后宫与护国观音庙的历史跨越一个世纪,分别见证华人移民群体在不同时代的日常生活和信仰实践。它们皆由同乡会创建,既是移民社交联谊和实践信仰的场所,也发挥着弘扬中华文化的作用。另外,这些庙宇在维系移民群体与其祖籍地联系的同时,也具有推动移民群体与当地社区融合的功能。

关键词：澳大利亚华人移民民间信仰同乡会华人庙宇

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Conditional Coverage Estimation for High-Quality Prediction intervals

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Journal of Systems Science and Systems Engineering 2023年第3期32卷 289-319页

作者： Ziyi Huang Henry lam Haofeng Zhang School of Engineering and Applied Science Columbia UniversityNew YorkNY 10027USA

Deep learning has been recently studied to generate high-quality prediction intervals(Pis)for uncertainty quantification in regression tasks,including recent applications in simulation *** high-quality criterion requires Pis to be as narrow as possible,whilst maintaining a pre-specified level of data(marginal)***,most existing works for high-quality Pis lack accurate information on conditional coverage,which may cause unreliable predictions if it is significantly smaller than the marginal *** address this problem,we propose an end-to-end framework which could output high-quality Pis and simultaneously provide their conditional coverage *** doing so,we design a new loss function that is both easy-to-implement and theoretically justified via an exponential concentration *** evaluation on real-world benchmark datasets and synthetic examples shows that our approach not only achieves competitive results on high-quality Pis in terms of average Pi width,but also accurately estimates conditional coverage information that is useful in assessing model uncertainty.

关键词： Uncertainty quantification prediction intervals conditional coverage neural networks calibrationerror

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Theoretical study of substituent effect on the charge mobility of 2,5-bis(trialkylsilylethynyl)-1,1,3,4-tetraphenylsiloles

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Science China Chemistry 2010年第11期53卷 2311-2317页

作者： lam Jacky Wing Yip Department of Chemistry The Hong Kong University of Science & Technology

The theoretical calculation of the charge mobility of 2,5-bis(trialkylsilylethynyl)-1,1,3,4-tetraphenylsiloles is presented.B3LYP/6-31* calculations demonstrated that these silole molecules possessed large coupling matrix elements and reorganization energies for electron and hole transfers and high electron *** bulkiness of the trialkyl substituents influenced the charge mobility of the silole molecules,with the smaller trimethyl group imparting higher charge mobility than triethyl and triisopropyl substituents.

关键词： silole theoretical calculation substitution effect electronic structure charge mobility

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