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UV油墨对凹印烟标VOCs含量影响的实验研究

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印刷与数字媒体技术研究 2024年第1期 83-91页

作者：刘静何邦贵夏家良王琪昆明理工大学机电工程学院昆明650500 云南九九彩印有限公司昆明650032

为研究UV油墨应用于烟标的凹版印刷后,能否满足生产质量要求且有效降低烟标生产中VOCs排放和残留,本研究对当前烟标的凹版印刷工艺进行分析,以UV油墨作为烟标的印刷油墨,使用凹印机组进行打样试生产,最后对凹印车间VOCs排放量以及打样... 详细信息

为研究UV油墨应用于烟标的凹版印刷后,能否满足生产质量要求且有效降低烟标生产中VOCs排放和残留,本研究对当前烟标的凹版印刷工艺进行分析,以UV油墨作为烟标的印刷油墨,使用凹印机组进行打样试生产,最后对凹印车间VOCs排放量以及打样所得到的样张进行卷烟盒包装纸安全性指标和表面印刷质量检测。实验结果表明,使用UV油墨后,烟标中VOCs溶剂残留的检测结果均低于国家烟草专卖局所给出的限量标准,其中VOCs总含量仅为0.01mg/m~2,相比于溶剂油墨样张中VOCs总含量减少了2.3mg/m~2;同时车间VOCs总排放量减少了55.31mg/m~3,且烟标表面印刷质量相较于标准样张能达到90%以上的色彩还原度。实验可说明使用UV油墨有较好的VOCs减排作用,同时也大大提升了烟标的安全性能,成功解决了溶剂型油墨在烟标凹版印刷中VOCs排放量大和有害物质残留问题。

关键词：烟标凹版印刷 UV油墨 VOCs残留印刷工艺

Epidemiological Aspects of Stillbirth and Neonatal Deaths in the Delivery Room at the Libreville Mother-Child University Hospital from 2019 to 2022

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Open Journal of Pediatrics 2024年第1期14卷 1-10页

作者： Eliane Kuissi Kamgaing Jacques Albert bang Ntamack Opheelia Makoyo Komba Raïssa Koumba Maniaga Steeve Minto’o Rogombe Pascal Loulouga Badinga Aude Lembet Mikolo Simon Ategbo Department of Neonatal Medicine Jeanne Ebori Foundation Mother-Child University Hospital (JEFMCUH) of Libreville Libreville Gabon Department of Gynaecology and Obstetrics Jeanne Ebori Foundation (JEFMCUH) of Libreville Libreville Gabon Department of Paediatrics University of Health Sciences Libreville Gabon

Introduction: Stillbirths are estimated at 2 million each year, of which more than 40% occur during labour. Our objective was to study the epidemiological aspects of stillbirth and neonatal deaths in the delivery room in our health facility. Patients and methods: Prospective, descriptive and analytical study, conducted at the Jeanne Ebori Foundation Mother-Child University Hospital over 4 years (January 2019-December 2022). All neonatal deaths in the delivery room or foetal death in utero, were included. Results: Among the 18,346 deliveries performed, 512 newborns were declared dead in the delivery room (27.9‰ live births), divided into in utero foetal death (19.0‰) and immediate neonatal death (8.9‰). The mean age was 34.3 weeks of amenorrhea. The rate of preterm birth was 60.4%. The sex ratio was 1.1. The average weight was 2186.6. The main causes were vascular (46.1%), foetal (20.2%), adnexal (17.1%) and asphyxia per partum (16.6%). Foetal causes were more likely to result in IUFD than other causes (OR = 6.4 [2.4 - 15.7], p < 0.001). After birth, partum asphyxia was more likely to lead to death before 15 minutes of life than other causes (OR = 11 [6.1 - 18.9], p Conclusion: The causes of stillbirth and early neonatal mortality are dominated by maternal vascular pathologies. However, the proportion of childbirth-related causes remains worrying. Better monitoring of pregnancy and labour will minimize this prevalence in our hospital.

关键词： Stillbirth Neonatal Death Delivery Room Epidemiology Libreville-Gabon

产教融合赋能新质生产力发展:空间生产的视角

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职业技术教育 2024年第19期45卷 15-20页

作者：王棒陆雯余家斌广西师范大学职业技术师范学院桂林541004

从空间生产的视角来看,新质生产力发展是各生产要素空间样态不断变化,人与自然、人与人空间关系不断重构,生成新空间的过程。产教融合可以通过打造以校企合作优化各生产要素的物质空间、塑造以校企协作共生共荣为格局的社会空间、营造... 详细信息

从空间生产的视角来看,新质生产力发展是各生产要素空间样态不断变化,人与自然、人与人空间关系不断重构,生成新空间的过程。产教融合可以通过打造以校企合作优化各生产要素的物质空间、塑造以校企协作共生共荣为格局的社会空间、营造以产教协同创新文化为主导的精神空间等机理赋能新质生产力发展。但现实中仍面临校企协同合作效果尚需优化、校企协作共生格局尚未完全形成及产教协同创新文化尚待大力培育等挑战,亟须通过提升校企协同合作效果,优化各生产要素;构建校企协作共生格局,塑造新型社会关系;培育产教协同创新文化,凝聚集体创新意识等策略予以应对。

关键词：产教融合新质生产力空间生产职业教育新型劳动者

Gastrointestinal manifestations of critical ill heatstroke patients and their associations with outcomes:A multicentre,retrospective,observational study

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World Journal of Gastroenterology 2024年第4期30卷 346-366页

作者： Yu-Cong Wang Xin-Yang Jin Zheng Lei Xiao-Jiao Liu Yu Liu bang-Guo Zhang Jian Gong Lie-Tao Wang Lv-Yuan Shi Ding-Yuan Wan Xin Fu Lu-Ping Wang Ai-Jia Ma Yi-Song Cheng Jing Yang Min He Xiao-Dong Jin Yan Kang Bo Wang Zhong-Wei Zhang Qin Wu Department of Critical Care Medicine West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina School of Pharmacy Macao University of Science and TechnologyMacao 999078China Department of Critical Care Medicine The First People's Hospital of Ziyang CityZiyang 641399Sichuan ProvinceChina Department of Critical Care Medicine The First People's Hospital of Guanghan CityChengdu 618399Sichuan ProvinceChina Department of Critical Care Medicine Lezhi County Traditional Chinese Medicine HospitalChengdu 641599Sichuan ProvinceChina Department of Critical Care Medicine Chengdu Qingbaijiang District People's HospitalChengdu 610399Sichuan ProvinceChina Department of Critical Care Medicine Ziyang People's HospitalChengdu 641399Sichuan ProvinceChina

BACKGROUND Extreme heat exposure is a growing health problem,and the effects of heat on the gastrointestinal(GI)tract is *** study aimed to assess the incidence of GI symptoms associated with heatstroke and its impact on *** To assess the incidence of GI symptoms associated with heatstroke and its impact on *** Patients admitted to the intensive care unit(ICU)due to heatstroke were included from 83 *** history,laboratory results,and clinically relevant outcomes were recorded at ICU admission and daily until up to day 15,ICU discharge,or *** symptoms,including nausea/vomiting,diarrhoea,flatulence,and bloody stools,were *** characteristics of patients with heatstroke concomitant with GI symptoms were *** regression analyses were performed to determine significant predictors of GI *** A total of 713 patients were included in the final analysis,of whom 132(18.5%)patients had at least one GI symptom during their ICU stay,while 26(3.6%)suffered from more than one *** with GI symptoms had a significantly higher ICU stay compared with those *** mortality of patients who had two or more GI symptoms simultaneously was significantly higher than that in those with one GI *** logistic regression analysis revealed that older patients with a lower GCS score on admission were more likely to experience GI *** The GI manifestations of heatstroke are common and appear to impact clinically relevant hospitalization outcomes.

关键词： Extreme heat Flatulence Sunstroke Intensive care units Diarrhea

Results of Surgical Management of Malignant Obstruction of the Common Bile Duct in Yaoundé

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Surgical Science 2024年第4期15卷 265-277页

作者： Eric Patrick Savom Gaël Tsanga Nomo Richard II Mbele Mahamat Yannick Ekani Boukar Cédric Paterson Atangana Fred Dikongue Dikongue Guy Aristide bang Arthur Essomba Yaoundé General Hospital Yaound&#233 Cameroon Faculty of Medicine and Biomedical Sciences of the Universityof Yaoundé I Yaound&#233 Cameroon Faculty of Health Sciences University of Buea Buea Cameroon Faculty of Medicine and Biomedical Sciences of the University of Dschang Dschang Cameroon Yaoundé Teaching Hospital Yaound&#233 Cameroon

Introduction: In Cameroon, surgery remains the only approach in malignant obstructions of the common bile duct (MOCBD) even in palliative situations. The aim of this work was to describe the modalities of surgical treatment of MOCBD, evaluate the results and detect the factors associated with postoperative morbidity and mortality. Patients and Methods: We conducted an analytical observational study, with retrospective data collection from the files of patients operated upon for MOCBD. This was done in four referral hospitals in the city of Yaoundé for a 42-month period spanning from January 1, 2020 to June 30, 2023. Demographic data, clinical presentation, surgical data, and 30-day postoperative outcomes were collected. Results: We collected 71 files. The sex ratio was 1.4 and the mean age was 56 ± 11 years. Fifty-three (53) patients (74.6%) were overweight or obese and 10 patients (14.1%) were hypertensive. A clinical cholestasis syndrome was present in 69 patients (97.2%). Fifty-five (55) patients (77.5%) had a cancer of the head of the pancreas, 8 patients (11.3%) had an extra-hepatic cholangiocarcinoma and 8 patients (11.3%) had an ampullary adenocarcinoma. Eight (8) resections (11.3%) with curative intent had been carried out and in 63 cases (88.7%), surgery was palliative. Postoperative morbidity was 55.7%, influenced by advanced WHO stage (p = 0.02). Postoperative mortality was 25.7%, associated with a high ASA score (p = 0.01). Conclusion: Pancreatic head cancer is the main etiology of malignant obstructions of the common bile duct in Cameroon. Surgical treatment is most often palliative. Postoperative morbidity and mortality are high, influenced by high WHO and ASA scores.

关键词： Malignant Obstruction Common Bile Duct Palliative Treatment Morbidity Mortality

柳盛路综合管廊施工过程中塑模快拆体系的技术研究

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价值工程 2024年第15期43卷 12-15页

作者：尹海浜中铁二十五局集团第四工程有限公司柳州545000

文中针对地下综合管廊施工过程中的模板发展历程进行了简要介绍,针对柳盛路综合管廊工程施工复杂环境下质量要求高、施工周期短、施工作业场地受限等难题,运用了具有支架体系简单、面板重量轻,环保性好、混凝土表面质量好的塑料模板配... 详细信息

文中针对地下综合管廊施工过程中的模板发展历程进行了简要介绍,针对柳盛路综合管廊工程施工复杂环境下质量要求高、施工周期短、施工作业场地受限等难题,运用了具有支架体系简单、面板重量轻,环保性好、混凝土表面质量好的塑料模板配合快拆体系,通过设计并验算,采取合理的施工工艺及方法,解决了该工程施工过程中材料用量大、安装周期长、施工场地受限制的问题,从工程效果来看,混凝土施工的光面效果质量好。

关键词：综合管廊高压旋喷桩塑料模板快拆体系

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Open Scrotal Trauma Complicated by Testicular Evisceration: An Unusual Injury after a Brawl in 2 Cases

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Open Journal of Urology 2024年第5期14卷 282-289页

作者： Atangana Cédric Paterson Savom Eric Patrick Tim Fabrice Dikongue Diwondi Audrey Ngapanya Youssofa Etobe Cécile Akoa Manga Ismael Fodoung Wamba Danny bang Guy Aristide Faculty of Medicine and Biomedical Sciences University of Yaounde I Yaound&#233 Cameroon Department of Surgery General Hospital Yaounde Yaounde Cameroon Department of Visceral Surgery Yaound&#233 Central Hospital Yaounde Cameroon Faculty of Health Sciences University of Bamenda Bamenda Cameroon Department of Surgery Yaound&#233 University Hospital Yaounde Cameroon

Background: Scrotal trauma is a rare injury, and can compromise reproductive function. If in closed trauma, a morphological assessment of the lesion is usually necessary before treatment, in open trauma otherwise, namely in the case of testicular evisceration, surgical exploration is the rule. Objective: To present the management of open scrotal trauma. Case Presentation: These were two adults aged 42 and 63, admitted for post-traumatic testicular evisceration. One of the patients presented with signs of infection due to a diagnosis delay. Management consisted on surgical exploration, with scrotal debridement and testicular reintegration. The evolution was favourable. Conclusion: Open scrotal trauma is a rare lesion that can cause testicular evisceration. It requires surgical exploration, which should be systematic.

关键词： Scrotal Trauma Testicular Evisceration Infection Surgical Exploration

中国主要油料作物2000—2020年生产时空演化特征及驱动因素分析

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西南农业学报 2024年第6期37卷 1377-1385页

作者：张帮锐张军以重庆师范大学地理与旅游学院重庆401331

【目的】分析我国3种主要油料作物大豆、花生、油菜2000—2020年生产时空集聚变化及其驱动因素,为优化食用油料作物生产布局提供参考。【方法】利用重心迁移模型、探索性空间数据分析、时空地理加权回归模型等方法分析大豆、花生、油菜... 详细信息

【目的】分析我国3种主要油料作物大豆、花生、油菜2000—2020年生产时空集聚变化及其驱动因素,为优化食用油料作物生产布局提供参考。【方法】利用重心迁移模型、探索性空间数据分析、时空地理加权回归模型等方法分析大豆、花生、油菜生产时空集聚演变特征及其驱动因素。【结果】(1)大豆产量最高,花生次之,油菜最低。大豆产量呈大幅波动上升,油菜和花生产量呈小幅波动上升。大豆生产主要分布在黑龙江、内蒙古、河南、安徽;花生生产主要分布在山东、河南、广东;油菜生产主要分布在四川、湖北和湖南。(2)2000—2020年3种油料作物产量集聚程度呈减弱态势,其中大豆产量高-高聚集区在黑龙江、吉林,低-低聚集区在新疆;花生产量高-高聚集区在山东、河南、安徽,低-低聚集区在新疆;油菜产量高-高聚集区在湖北、安徽、江西,低-低聚集区在内蒙古。大豆生产重心从河北唐海县到内蒙古宁城县向西北迁移;花生生产重心在河南境内,向豫西北迁移;油菜生产重心从湖北南漳县到重庆奉节县向西南迁移。(3)不同油料作物生产驱动因素在不同省份的作用程度不同。大豆生产主要受人口密度、化肥施用量、GDP增长率影响;花生生产主要受化肥施用量、机械总动力、灌溉面积影响;油菜生产主要受人口密度、城镇化率和公路密度影响。【结论】3种主要油料作物生产具有明显的空间地域集聚特征,其影响因素存在差异,整体主要受化肥施用量等社会经济因素影响。

关键词：主要油料作物时空演变集聚特征驱动因素

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含外圈剥落和不对中的齿轮-转子-轴承系统振动分析

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Journal of Central South University 2024年第2期31卷 511-525页

作者：徐宏阳赵翔马辉罗忠韩清凯闻邦椿 School of Mechanical Engineering and Automation Northeastern UniversityShenyang 110819China Key Laboratory of Vibration and Control of Aero-Propulsion System(Ministry of Education) Northeastern UniversityShenyang 110819China

轴承套圈的不对中和剥落是影响齿轮-转子-轴承系统振动特性的典型误差和故障。为了研究外圈不对中和剥落对系统的耦合影响,有必要对含不对中和剥落的齿轮-转子-轴承系统振动特性进行分析。首先,考虑外圈不对中和剥落,计算了轴承的五自... 详细信息

轴承套圈的不对中和剥落是影响齿轮-转子-轴承系统振动特性的典型误差和故障。为了研究外圈不对中和剥落对系统的耦合影响,有必要对含不对中和剥落的齿轮-转子-轴承系统振动特性进行分析。首先,考虑外圈不对中和剥落,计算了轴承的五自由度非线性恢复力。然后,基于轮齿承载接触分析(LTCA)方法,计算了啮合刚度并且建立了直齿轮副的动力学模型。在此基础上,基于切片法建立了花键的等效刚度模型。最后,通过将轴承的恢复力模型、直齿轮副的动力学模型和花键的等效刚度模型与转子系统的有限元模型耦合,建立了齿轮-转子-轴承系统的动力学模型。分析表明,只有剥落位于承载区时,才会对轴承接触力、接触角和系统振动特性产生影响。外圈的不对中导致轴承的承载区范围增大,并使得剥落对系统产生影响的概率增加。

关键词：球轴承不对中剥落振动特性齿轮-转子-轴承系统