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Accidental Ingestion of Nitric Acid in an Agricultural Company: A Case Study and literature Review

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Occupational Diseases and Environmental Medicine 2024年第1期12卷 21-27页

作者： Asséga Sylvain Sagna Mame Thioro Aïssatou Fall Mossane Dominique Ndour Sidy Diallo Société de Cultures Légumières (SCL) Saint-Louis Sénégal West Africa Farms (WAF) Yamane Louga Sénégal International Committee of The Red Cross Dakar Sénégal Saint-Louis Regional Hospital Center Saint-Louis Sénégal

Introduction: Though common in society, caustic accidental ingestion is rare in the agricultural industry. This study describes a case of ingestion of nitric acid used as an agricultural fertilizer by an ordinary worker at the Société de Cultures Légumières. Clinical Case: This is a 33-year-old unschooled woman who ingested a sip of nitric acid from an abandoned labelled acid canister near a farming plot of land. She showed a burn of the oral cavity with a bleeding tablecloth and an intense retrosternal pain. The duodenal oesophagus fibroscopy screening that was carried out 18 hours after the accident, revealed an esophagitis class 2b. The tests revealed no anomalies. Fifteen (15) days after the accident, the FOGD was normal. Following an 8-month-follow up, no signs of stenosis or degeneration were noted. Conclusion: The accidental ingestion of nitric acid is rare in adult. Its treatment is mainly symptomatic and aims at preserving vital functions without directly fighting the ingested substance off. The right actions must be integrated into the 15-minute Health and Safety awarenesssessions for optimum pre-hospital management. The hospital evaluation is mandatory and is carried out thanks to the digestive endoscopy, which is still relevant in this indication, but is completed by the thoraco-abdominal CT. The latter is very sensitive the transmural necrosis diagnosis.

关键词： Accident Agriculture Caustic Fibroscopy Senegal

Trends in colorectal cancer incidence according to an increase in the number of colonoscopy cases in Korea

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World Journal of gastrointestinal Oncology 2024年第1期16卷 51-60页

作者： ga Hee Kim Yeong Chan Lee Tae Jun Kim Sung Noh Hong Dong Kyung Chang Young-Ho Kim Dong-Hoon Yang Chang Mo Moon Kyunga Kim Hyun Gun Kim Eun-Ran Kim Division of gastroenterology Department of Internal MedicineAsan Medical CenterUniversity of Ulsan College of MedicineSeoul 05505South Korea Department of Digital Health Samsung Advanced Institute for Health Science and TechnologySungkyunkwan University School of MedicineSeoul 06351South Korea Division of gastroenterology Department of Internal MedicineSamsung Medical CenterSungkyunkwan University School of MedicineSeoul 06351South Korea Division of gastroenterology Department of Internal MedicineEwha Womans UniversitySeoul 07985South Korea Biomedical Statistics Center Samsung Medical CenterSeoul 06351South Korea Division of gastroenterology Department of Internal MedicineSoonchunhyang University College of MedicineSeoul 04401South Korea

BACKGROUND The incidence of colorectal cancer(CRC)and preinvasive CRC(e.g.,early colon cancer and advanced adenoma)is gradually increasing in several *** To evaluate the trend in incidence of CRC and preinvasive CRC according to the increase in the number of colonoscopies performed in *** This retrospective cohort study enrolled Korean patients from 2002 to 2020 to evaluate the incidence of CRC and preinvasive CRC,and assess the numbers of diagnostic colonoscopies and colonoscopic ***-related complications by age group were also *** The incidence of CRC showed a rapid increase,then decreased after 2012 in the 50-75 year-age *** the study period,the rate of incidence of preinvasive CRC increased at a similar level in patients under 50 and 50-75 years of *** 2009,the increase has been rapid,showing a pattern similar to the increase in *** rate of colonoscopic polypectomy in patients aged under 50 was similar to the rate in patients over 75 years of age after *** rate of complications after colonoscopy and related deaths within 3 mo was high for those over 75 years of *** The diagnosis of preinvasive CRC increased with the increase in the number of colonoscopies *** the risk of colonoscopy-related hospitalization and death is high in the elderly,if early lesions at risk of developing CRC are diagnosed and treated under or at the age of 75,colonoscopy-related complications can be reduced for those aged 76 years or over.

关键词： Colorectal cancer Preinvasive colorectal cancer Colorectal polypectomy Colonoscopy

成层地基微型桩加固浅基础的离心模型试验研究

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岩土工程学报 2024年第S1期46卷 81-85页

作者：周玮宁李子曦张嘎清华大学水利水电工程系北京100084

对比了成层地基微型桩加固浅基础与不加固情况的离心模型试验,分析地基土和基础的变形破坏响应,阐明复杂地层条件下微型桩的加固机理。结果表明微型桩显著减小了浅基础的沉降量。微型桩加固的主要范围在淤泥质粉质黏土层深度4 m上方。... 详细信息

对比了成层地基微型桩加固浅基础与不加固情况的离心模型试验,分析地基土和基础的变形破坏响应,阐明复杂地层条件下微型桩的加固机理。结果表明微型桩显著减小了浅基础的沉降量。微型桩加固的主要范围在淤泥质粉质黏土层深度4 m上方。微型桩加固下,地基的沉降更为规律均匀,粉质黏土层与淤泥质粉质黏土层的分界层附近位移变化更缓和。微型桩加固下,荷载影响区域深度减小,粉质黏土层影响区域宽度的减小幅度大于淤泥质粉质黏土层。微型桩抑制荷载向下层地层的传导,约束了下层地基的水平位移,提高地基承载力。研究得出的规律为微型桩在现实工程中的应用提供参考。

关键词：离心模型试验复杂地层微型桩承载力

硫化钠体系中异极矿表面的硫化特性及硫化产物解析

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Transactions of Nonferrous Metals Society of China 2024年第2期34卷 629-642页

作者：张嘎王美丽和永新王涵丰奇成昆明理工大学国土资源工程学院省部共建复杂有色金属资源清洁利用国家重点实验室昆明650093 昆明理工大学云南省战略金属矿产资源绿色分离与富集重点实验室昆明650093 内蒙古兴业矿业股份有限公司赤峰024028

通过多种分析检测方法揭示硫化钠体系中异极矿表面的硫化特性和机理,并对异极矿表面硫化产物进行分析测试。研究结果表明,硫化钠浓度对异极矿表面的硫化效果具有显著影响,即提高硫化钠浓度能促进矿浆溶液中硫组分与矿物表面反应,从而提... 详细信息

通过多种分析检测方法揭示硫化钠体系中异极矿表面的硫化特性和机理,并对异极矿表面硫化产物进行分析测试。研究结果表明,硫化钠浓度对异极矿表面的硫化效果具有显著影响,即提高硫化钠浓度能促进矿浆溶液中硫组分与矿物表面反应,从而提高异极矿表面硫化产物的含量及矿物表面的疏水性。XPS和ToF-SIMS分析表明,异极矿表面的硫化产物并非单一的硫化物,而是由硫化物(S^(2−))和多硫化物(S_(n)^(2−))组成,且矿物表面多硫化物含量随硫化钠浓度的增加而增加,从而增强异极矿表面硫化产物的活性。

关键词：硫化特性异极矿硫化钠浓度硫化锌组分多硫化物

虚拟电厂网络安全风险评估指标体系构建及量化计算

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中国电力 2024年第8期57卷 130-137页

作者：杨珂王栋李达张王俊向尕李军国网数字科技控股有限公司北京100053 国网区块链科技(北京)有限公司北京100053 国网区块链应用技术实验室北京100053 国网上海市电力公司上海200122 北京信息科技大学北京100192

提出了静态与动态风险评估相结合的多维动态网络安全风险评估指标体系。基于虚拟电厂的特点进行网络安全风险分析,构筑多维静态风险评估指标。基于攻击路径演化机理,对信息侧、物理侧和信息-物理侧进行数据采集,构筑动态风险评估指标。... 详细信息

提出了静态与动态风险评估相结合的多维动态网络安全风险评估指标体系。基于虚拟电厂的特点进行网络安全风险分析,构筑多维静态风险评估指标。基于攻击路径演化机理,对信息侧、物理侧和信息-物理侧进行数据采集,构筑动态风险评估指标。提出指标量化计算方法。通过仿真实验验证本文所提的指标体系及量化计算方法能够有效评估安全性,识别风险隐患,提出有效的加固措施。

关键词：虚拟电厂公网与专网互动风险评估指标体系

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囊玛艺术新论

西藏研究 2024年第3期 66-76,M0005,M0006页

作者：觉嘎洛金宝西藏大学艺术学院拉萨850000

囊玛是一种集歌、舞、乐为一体的西藏传统表演艺术,而囊玛吉度是以囊玛艺术的实践为主要业务的行会组织。作为群众自发形成的社团组织,囊玛吉度形成背景和艺人来源具有多元化,其使用的乐器和表演的典目具有多样性。囊玛的表现内容主要... 详细信息

囊玛是一种集歌、舞、乐为一体的西藏传统表演艺术,而囊玛吉度是以囊玛艺术的实践为主要业务的行会组织。作为群众自发形成的社团组织,囊玛吉度形成背景和艺人来源具有多元化,其使用的乐器和表演的典目具有多样性。囊玛的表现内容主要包括爱情、时事、祈愿、赞颂、讽刺等内容,大多与不同时期的社会生活、观念意识等关联密切。在囊玛曲目中,有部分歌词采用了仓央嘉措的诗作,汉文关联表达和双关语也得到了广泛运用。

关键词：传统音乐囊玛囊玛吉度曲目

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纳米凹凸棒石对酚醛复合材料摩擦学性能的影响

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工程塑料应用 2024年第6期52卷 95-102,109页

作者：王晓东李欢张嘎王小新青岛科技大学高分子科学与工程学院山东青岛266042 中国科学院兰州化学物理研究所固体润滑国家重点实验室兰州730000

源自优质黏土矿物资源的一维凹凸棒石(AT)纳米纤维,可用于增强复合材料并改善其摩擦磨损特性。采用酚醛树脂(PF)模塑料塑炼工艺及热压成型工艺制备了AT纳米纤维混杂传统微米纤维如碳纤维(CF)、玻璃纤维(GF)及芳纶纤维(AF)增强PF复合材料... 详细信息

源自优质黏土矿物资源的一维凹凸棒石(AT)纳米纤维,可用于增强复合材料并改善其摩擦磨损特性。采用酚醛树脂(PF)模塑料塑炼工艺及热压成型工艺制备了AT纳米纤维混杂传统微米纤维如碳纤维(CF)、玻璃纤维(GF)及芳纶纤维(AF)增强PF复合材料,系统考察了AT纳米纤维的含量对微米尺度短切纤维增强PF复合材料压缩性能及多种工况下摩擦学性能的影响规律,利用扫描电子显微镜及能谱仪表征了摩擦界面原位生长转移膜的微观结构,探索了AT纳米纤维与微米纤维在干摩擦、油润滑和水润滑条件下可能的协同减摩抗磨作用机理。结果表明,AT与高模量纤维(CF,GF)表现出显著的协同增强作用,显著提高了PF复合材料的压缩强度。当AT纳米纤维质量分数为20%时,CF/AT/PF与GF/AT/PF的压缩强度分别可达407 MPa及400 MPa。干摩擦条件下,AT分别与CF和AF的复配使用促进了固体润滑特性转移膜的生长,提高了材料的自润滑性能;油润滑条件下,GF/AT/PF表现出最高的耐磨性能,GF减薄可能是主要的磨损机理;水润滑条件下,AF/AT/PF表现出最低的摩擦系数,而CF/AT/PF表现出最高的耐磨性能。

关键词：凹凸棒石摩擦磨损纤维增强多重工况转移膜

数字流域模型淤地坝模块改进及减水减沙效益评估

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应用基础与工程科学学报 2024年第2期32卷 301-313页

作者：张玍傅旭东孙凯王晨沣清华大学水沙科学与水利水电工程国家重点实验室北京100084

淤地坝具有重要的水土保持作用,但其减水减沙效益的科学评估仍存在困难.一方面,淤地坝减水减沙的物理机制仍难以刻画;另一方面,观测资料有限且难以获取.以概化淤地坝卧管及溢洪道等部分的泄流机制及整体水沙调控机制为基础,改进和检验... 详细信息

淤地坝具有重要的水土保持作用,但其减水减沙效益的科学评估仍存在困难.一方面,淤地坝减水减沙的物理机制仍难以刻画;另一方面,观测资料有限且难以获取.以概化淤地坝卧管及溢洪道等部分的泄流机制及整体水沙调控机制为基础,改进和检验了数字流域模型的淤地坝模块,应用改进后的模型模拟皇甫川流域水沙过程并评估淤地坝减水减沙效益.研究结果表明:不考虑淤地坝的情况下,模型对淤地坝数量较少的近似自然状态期(1979~1986年)适用性较好,而对淤地坝数量较多的受扰状态期(2007~2012年)适用性较差,水沙模拟值明显高于实测值.考虑淤地坝的物理机制后,与原模型相比,除个别年份外,改进后的模型对受扰状态期水沙过程的模拟精度具有明显的提高,其逐日流量NSE(Nash-Sutcliffe效率系数)从-51.085~0.450提高到0.134~0.802,逐日输沙率NSE从-56.740~0.390提高到0.066~0.857.使用改进后的模型计算得受扰状态期淤地坝平均拦水量为0.142×10^(8)m^(3),减水效益为40.9%;平均拦沙量为0.050×10^(8)t,减沙效益为50.3%.研究成果可为认识淤地坝调控水沙物理机制提供模型支撑和为淤地坝建设规划提供科学指导.

关键词：淤地坝减水减沙减水减沙效益水土保持数字流域模型分布式水沙模型皇甫川

Assessment of the Level of Knowledge about Chronic Renal Failure in 271 Hypertensive Patients in Brazzaville

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Open Journal of Nephrology 2024年第1期14卷 25-36页

作者： Daniel Tony Eyeni Sinomono Ange Niama gaël Honal Mahoungou Éric gandzali-Ngabé Ndinga Berline Ngoma Precieux Dalia Mboungo Richard Loumingo Department of Nephrology University Hospital Center Faculty of Health Sciences Marien Ngouabi University Brazzaville Congo Department of Public Health Faculty of Health Sciences Marien Ngouabi University Brazzaville Congo

Background and Objectives: Chronic kidney disease (CKD) is now a global public health problem. In low- and middle-income countries such as the Congo, access to dialysis is low and inequitable. The prevention of CKD involves raising awareness among patients at risk, such as those suffering from arterial hypertension (AH), by improving their knowledge of CKD. The objectives of our work were to determine the level of knowledge about CKD among hypertensive patients and to identify the factors associated with a low level of knowledge. Methodology: We conducted a 3-month descriptive and analytical cross-sectional study from 1 August to 30 October 2023 in 3 large public hospitals in Brazzaville (capital of the Republic of Congo). We included: hypertensive patients aged 18 and over who had freely consented to participate in our study and were able to answer the questions on the survey form. Patients with known hypertension who had been followed for less than 3 years and those with known chronic renal failure were not included. Results: The mean age was 58.4 ± 14.4 years (29 - 88 years). There were 121 men and 150 women (sex ratio = 0.8). All the patients were educated;37.2% with a higher level of education and 13.6% with primary education. 24 patients (9%) had a good level of knowledge about CKD and 153 (56%) had poor knowledge. A good level of knowledge was associated with the duration of hypertension, intellectual level and the existence of associated heart disease. Conclusion: Our study reveals a significant lack of knowledge about chronic kidney disease among hypertensive patients in Brazzaville.

关键词： Knowledge Chronic Renal Failure Hypertensives Brazzaville