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基于二元光学透镜光谱聚焦特性的微间距测量

光学学报 2020年第2期40卷 93-99页

作者：王思沫李凡星彭伏平杜佳林严伟中国科学院光电技术研究所微细加工光学技术国家重点实验室四川成都610209 中国科学院大学北京100049

针对传统色散透镜的色散线性度很难保证为绝对线性,测量范围很窄的问题,且为了尽量减小球差尤其是对测量影响最大的轴向球差,提出一种将二元光学透镜引入到光谱共聚焦微小间距测量的方法。该方法中二元光学透镜的色散只与入射光的波长有... 详细信息

针对传统色散透镜的色散线性度很难保证为绝对线性,测量范围很窄的问题,且为了尽量减小球差尤其是对测量影响最大的轴向球差,提出一种将二元光学透镜引入到光谱共聚焦微小间距测量的方法。该方法中二元光学透镜的色散只与入射光的波长有关,且严格与入射光的波长成反比。二元光学透镜不存在球差问题且可以补偿校正测量系统中其他光学组件的未知色差。实验中选择510~690nm范围内的光谱,利用分辨率为0.5nm的光谱仪接收光谱信息,测得该方法的测量量程为13.95mm,测量误差为0.6μm,并通过对光盘上的刻录间距进行测量,验证了该方法的有效性。

关键词：测量光谱共聚焦二元光学透镜轴向色散测距

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我国行刑社会化的制度省思及完善

洛阳理工学院学报（社会科学版） 2018年第3期33卷 54-60页

作者：刘司墨北京师范大学刑事法律科学研究院北京100875

行刑社会化并非行刑的非监禁化。目前,我国罪犯的社会化改造虽然主要运用非监禁手段,但并不排斥监禁刑的运用。行刑社会化是融非监禁刑和监禁刑于一体的执行方式,绝不等同于纯粹的非监禁刑。囿于传统理论对行刑社会化理解的偏差,实践中... 详细信息

行刑社会化并非行刑的非监禁化。目前,我国罪犯的社会化改造虽然主要运用非监禁手段,但并不排斥监禁刑的运用。行刑社会化是融非监禁刑和监禁刑于一体的执行方式,绝不等同于纯粹的非监禁刑。囿于传统理论对行刑社会化理解的偏差,实践中行刑社会化的制度安排出现了诸多问题,主要包括管领主体问题、罪犯复归模式问题、罪犯复归能力问题等。未来我国的行刑社会化制度构建应当着重解决上述三类问题。

关键词：行刑社会化管领主体罪犯复归模式罪犯复归能力

源荷双侧不确定因素影响下基于Rubinstein博弈的电网双层定价模型

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电工技术学报 2019年第S2期34卷 729-741页

作者：李力行苗世洪余璟涂青宇段偲默华中科技大学电气与电子工程学院强电磁工程与新技术国家重点实验室武汉430074 华中科技大学电气与电子工程学院电力安全与高效湖北省重点实验室武汉430074 国网江苏省电力有限公司南京210000

随着电力市场的进一步开放以及可再生能源渗透率的不断提升,电网电能交易的多元化、复杂化给电网的调度运行带来了新的挑战。针对部分开放电力市场环境下考虑不确定性的多主体电能交易机制下的协同调度、博弈问题,提出了源荷双侧不确定... 详细信息

随着电力市场的进一步开放以及可再生能源渗透率的不断提升,电网电能交易的多元化、复杂化给电网的调度运行带来了新的挑战。针对部分开放电力市场环境下考虑不确定性的多主体电能交易机制下的协同调度、博弈问题,提出了源荷双侧不确定因素影响下基于Rubinstein博弈的电网双层定价模型。首先,考虑我国当前电力市场的开放进程,建立考虑社会福利最大化的调度博弈双层定价机制;其次,考虑可再生能源、柔性负荷等源荷双侧不确定性因素影响,建立大电网随机机会约束规划模型;最后,考虑不同主体利益诉求,基于Rubinstein动态博弈模型,建立完全信息下的多主体议价机制,并求解得到该模型的子博弈精炼纳什均衡。以PJM5节点系统为例,仿真结果验证了模型的有效性。结果表明,该方法在兼顾各参与人利益的同时,降低了发电成本,实现了社会总效益与风电消纳量的提升。

关键词：多利益主体电力市场完全信息动态博弈源荷双侧不确定性鲁宾斯坦议价模型

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动车洁具喷嘴制造工艺分析与优化

制造技术与机床 2016年第8期 133-136页

作者：徐宁刘思默吴承楠福建信息职业技术学院机电工程系福建福州350003 福州精锐三合机械有限公司福建福州350003

通过对动车洁具喷嘴体加工工艺的研究,分析加工喷嘴过程中的工艺难点,研究产品大批量生产的解决方案,通过优化工艺路线,设计专用夹具,合理选择刀片,选用最佳切削用量等实践,证明该工艺方法可行,能提高生产效率和产品合格率。

关键词：动车喷嘴结构分析生产工艺优化

Assessing Strategies of Obstetric Fistula Management by Nurses/Midwives of Yaoundé Central Hospital and University Teaching Hospital

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Open Journal of Obstetrics and Gynecology 2023年第7期13卷 1210-1233页

作者： Dobgima Walter Pisoh Takang William Ako Bassong Yves Pierre Tah Nji Joy Mah Achuo Ascensius Mforteh Tameh Theodore Boten Bouyom Pierre merlin Helen Kuokuo Kimbi Department of Clinical Sciences Faculty of Health Sciences The University of Bamenda Bamenda Cameroon Department of Biomedical Sciences Faculty of Health Sciences The University of Bamenda Bamenda Cameroon

Every minute, a woman dies in pregnancy, and for every woman who dies 20 - 30 others will survive with morbidity, one of which is obstetrical fistula. Women who suffer from obstetric fistula experience continuous incontinence of urine and/or stool, stigma, social isolation and associated health problems. The World Health Organization estimates that there are currently more than 2 million women living with untreated obstetric fistula mostly in sub-Saharan Africa and South-East Asia, as well as in various other parts of the world. Caring for fistula patients and nursing them back to full physical and mental health can be one of the most challenging and also rewarding tasks undertaken by nurses. The surgery cannot succeed without proper pre-, peri- and post-operative care. The patients undoubtedly recover better with high-quality care—meaning the truly holistic, generous, and selfless care of a nurse who has the skills, understanding and determination to help these very vulnerable patients. Objective: This research seeks to assess the strategies of obstetric fistula management by nurses/midwives of Yaoundé central hospital and CHU by exploring the care they offer to clients pre-operatively, post-operatively, and when they are discharged from the hospital. Achieving Millennium Development Goal (MDG) 3 still remains a challenge to the developing countries although maternal mortality reduction is a priority agenda of each country. Methodology: This retrospective cross-sectional descriptive study design employed a sample of 100 nurses/midwives on active service, and who have at least managed a case of obstetric fistula. A quantitative questionnaire was used to collect data, which was analyzed using SPSS version 23. Results: The study proved a highly significant difference between management and qualification, with a p-value of 0.002. Also, it showed that there was a statistically significant difference between longevity of service and management with a p-value of 0.001. A

关键词： Obstetric Fistula Management Midwives Nurses

Prevalence and Adverse Pregnancy Outcomes Associated with Maternal Obesity in the Bamenda Regional Hospital

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Open Journal of Obstetrics and Gynecology 2023年第4期13卷 712-727页

作者： Dobgima Walter Pisoh Ngek Edwin Foinsok Loveline Lum Niba Tameh Theodore Achuo Ascensius Mforteh Boten Bouyom Pierre merlin Takang William Ako Dohbit Sama Julius Department of Clinical Sciences Faculty of Health Sciences The University of Bamenda Bambili Cameroon Department of Public Health Faculty of Health Sciences The University of Bamenda Bambili Cameroon Department of Obstetrics and Gynaecology Faculty of Medicine and Biomedical Sciences University of Yaounde I Yaounde Cameroon

Introduction: Obesity is one of the most common problems of reproductive age women and has been associated with diverse adverse pregnancy outcomes. Its prevalence in pregnancy is estimated at 14% in Cameroon. Objective: The main objective of this study was to determine the adverse pregnancy outcomes associated with obesity in the Regional Hospital Bamenda. Methodology: This was a hospital-based cross-sectional study. We recruited 283 participants and their BMIs were used to classify them as underweight ( - 24.9), overweight (25 - 29.9) and obese (≥30). Ethical clearance, administrative authorisation and consent of participants were obtained. Data was collected using a pretested questionnaire. We collected data on sociodemographic characteristics, anthropometric characteristics, and adverse pregnancy outcomes. Data was analysed using Microsoft Excel version 2010. Fisher’s test was used to determine relative risk on bivariate logistic regression. P-values < 0.05 were considered statistically significant. Results: Most participants were in the age group 20 - 34 years, and were multigravida and multipara. The prevalence of maternal obesity was 31.4%. Obesity was associated with an increased risk of hypertensive disorders [RR: 7.7, 95% CI (2.13 - 42.39), p = 0.0003], caesarean section [RR: 2.9, 95% CI (1.11 - 4.01), p = 0.017] and macrosomia [RR: 7.3, 95% CI (3.03 - 19.61), p Conclusion: Maternal obesity is associated with hypertensive disorders, caesarean section and macrosomia.

关键词： Maternal Obesity Pregnancy Outcome

The Prevalence Outcome and Associated Factors of Teenage Pregnancy in the Bamenda Health District

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Open Journal of Obstetrics and Gynecology 2023年第7期13卷 1163-1183页

作者： Takang William Ako Dobgima Walter Pisoh Nguemaim Flore Kwangfis Richard Nemline Achuo Ascensius Mforteh Tameh Theodore Boten Bouyom Pierre merlin Robert J.I. Leke Department of Clinical Sciences Faculty of Health Sciences The University of Bamenda Bamenda Cameroon Department of Biomedical Sciences Faculty of Health Sciences The University of Bamenda Bamenda Cameroon Department of Obstetrics and Gynaecology Faculty of Medicine and Biomedical Sciences University Yaounde 1 Yaounde Cam-eroon

Teenage pregnancy is a common public health problem worldwide because teenagers in general are ill-prepared to deal with the burden of pregnancy. Sub-Saharan Africa has the highest burden of teenage pregnancy precisely in the west and central Africa;in Cameroon, about 12% of all births are to teenage mothers. Complications from pregnancy and childbirth are the leading cause of death among girls aged 15 to 19. Though the trend of teenage pregnancy tends to decrease in most parts of the world, this is not the case in our setting. The main aim of this study was to determine the prevalence, outcomes and the associated factors of teenage pregnancy in the Bamenda Health District (BHD). Materials and Method: This was a hospital-based cross-sectional descriptive and analytic study carried out at the maternity and postnatal units of the Bamenda Regional Hospital and the Nkwen Medicalised Health Center. A consecutive non-probabilistic sampling technique was used to recruit participants. A pretested questionnaire was used to collect information from the participant. Data was analysed using the software SPSS version 23. Bivariate logistic regression was used to test for associations. Statistical significance was set at p-value less than 0.05. Result: A total of 325 participants were recruited of which 44 were teenagers. The mean age of the participants was 25.02 ± 0.257 years. The mean age of teenagers was 17.49 ± 0.63 years, and mean adult age was 28.43 ± 5.64 years. The youngest participant was 15 years. Teenagers were significantly more likely to prematurity (OR = 0.14;95% CI = 0.06 - 0.31;PV = 0.001), Low birth weight among teenagers (OR = 0.077;95% CI = 0.03 - 0.21;PV = 0.001), Still birth;OR = 0.07;95% CI = 0.01 - 0.86;PV = 0.03) Neonatal admission also high among teenagers (OR = 0.172, 95% CI = 0.08 - 0.39, PV = 0.001) compared to the babies of their adult counterpart. The rate of caesarean section and episiotomy was high among adult deliveries (21.7%). Conclusion: There

关键词： Adolescent/Teenage Pregnancy Prevalence Outcomes Associated Factors Bamenda Health District

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粘性和温度对PLIF测量浓度场的影响

粘性和温度对PLIF测量浓度场的影响

硼掺杂介孔碳材料对亚甲基蓝和甲基橙吸附性能

第八届全国实验流体力学学术会议

作者：张晓航 S.simoёns 南昌工程学院理学系 Ecole Centrale de Lyon UCB Lyon IUMR CNRS 5509LMFA36 Av.G.de Collongue 69131 Ecully CedexFrance

平面激光诱导荧光(PLIF)用于测量流体流动过程的浓度场。流体的浓度和温度及示踪物质的浓度都会对结果产生影响。本论文探究这些因素对PLIF结果精度的影响。本实验通过改变流体粘性,改变流体温度,改变罗丹明B的浓度来研究其对荧光强度... 详细信息

平面激光诱导荧光(PLIF)用于测量流体流动过程的浓度场。流体的浓度和温度及示踪物质的浓度都会对结果产生影响。本论文探究这些因素对PLIF结果精度的影响。本实验通过改变流体粘性,改变流体温度,改变罗丹明B的浓度来研究其对荧光强度的影响。这些实验的目的是能将PLIF方法用于粘性流体的混合研究。

关键词： PLIF 流体粘性温度罗丹明B

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水处理技术 2018年第9期44卷 56-61,66页

作者：史超包永胜贾美林阿古拉内蒙古师范大学化学与环境科学学院内蒙古自治区绿色催化重点实验室内蒙古呼和浩特010022

以F127为模板剂,以间苯二酚-甲醛树脂为碳前躯体,硼酸为硼源制备了一系列不同硼碳比的硼掺杂介孔碳材料BC-X(X为硼碳的摩尔比),并对其进行了表征,考察了其对甲基橙和亚甲基蓝的吸附性能。结果表明,采用水热法制备的材料具有良好的有序... 详细信息

以F127为模板剂,以间苯二酚-甲醛树脂为碳前躯体,硼酸为硼源制备了一系列不同硼碳比的硼掺杂介孔碳材料BC-X(X为硼碳的摩尔比),并对其进行了表征,考察了其对甲基橙和亚甲基蓝的吸附性能。结果表明,采用水热法制备的材料具有良好的有序介孔结构,对甲基橙和亚甲基蓝的去除率均达到了95%以上且重复利用性能优越。在吸附时间为1 h、温度为273 K时,BC-0.0625对MO和MB的最大吸附量分别达到了265 mg/g和241 mg/g。动力学实验中,BC-0.0625对MO和MB的去除率分别达到100%和99.2%。吸附动力学符合准2级模型,吸附行为与Langmuir等温模型一致,表明所制备的材料是一种良好的染料吸附剂。

关键词：硼掺杂介孔碳材料吸附