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千兆赫波段声表面波叉指式换能器及其应用

电信快报 1991年第4期 28-32,F003页

作者： yaman.,k 严震亚

Selenium: The Cancer Shield

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Journal of Biosciences and Medicines 2024年第7期12卷 170-183页

作者： Elvin Uysal Busra yaman Aydin Incirliova Bahcesehir High School Aydin Trkiye

Introduction: Breast cancer is one of the most common types of cancer in the world and the treatments are being improved day by day. Although chemotherapy agents have begun to be used, side effects, resistance development and toxicity seen with these drugs are still steps that limit treatment. Objective: Our aim in this study is to show whether sodium selenate (NaS), which has different effects on many different cells, has antiproliferative and apoptotic effects on MCF-7 breast cancer cells, considering the dose-time relationship, and to reveal its effect on oxidant stress parameters. Methods: 10, 20, 30, 40 and 50 μM sodium selenate was applied to the cells for 24, 48 and 72 hours. MTT test was applied to show the proliferative effect. Apoptosis was also measured with Annexin V/7AAD in MCF7 cells. Malondaldehyde (MDA) and Glutathione (GSH) levels were studied to reveal the oxidant/antioxidant balance. Results: It has been shown that as the NaS dose increases in MCF-7 cells, cell viability decreases (p 0.05), but at all subsequent increasing NaS doses, viability was found statistically significant decreased (p: 0.001, p 0.05, respectively). Conclusion: Considering that NaS has an antitumor effect on breast cancer, increases oxidative stress and increases apoptosis by supressing the antioxidant protection system, and does not have a toxic effect on normal body cells at certain doses. When all these features evaluated, we think, selenium should be considered as a natural option in the treatment of breast cancer.

关键词： Sodium Selenite Breast Cancer Apoptosis Oxidative Stress

Subsequent pregnancy outcomes and fertility rates in the case series that underwent bilateral hypogastric artery ligation(BHGAL)due to severe postpartum hemorrhage

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Asian pacific Journal of Reproduction 2024年第1期13卷 28-33页

作者： OkUTUCU Gulcan EVSEN Mehmet S PEkER Nurullah yaman.TUNC Senem ICEN Mehmet S Department of Obstetrics and Gynecology Division of PerinatologyTurkish Ministry of Health Ankara City HospitalAnkaraTurkey Department of Obstetrics and Gynecology Dicle UniversitySchool of MedicineDiyarbakirTurkey

Objective:To evaluate the effect of bilateral hypogastric artery ligation(BHGAL)on women's pregnancy outcomes and fertility rates in cases with severe postpartum ***:Patients hospitalized in a tertiary care center between 2007 and 2018 were included in the *** records of cases were obtained from the hospital database,*** demographic data,morbidities or complications associated with BHGAL surgery,any additional haemostatic interventional or surgical procedures,preoperative admission and lowest postoperative haematocrit-hemoglobin values,blood products given,type of anaesthesia,intensive care unit(ICU)and length of hospital stay were *** cases without surgical sterilization,future fertility and subsequent pregnancy outcomes were assessed for at least two years after *** was obtained through face-to-face or telephone interviews with patients whose long-term fertility and subsequent pregnancy outcomes were ***:Sixty-eight patients with BHGAL surgery history were included in the study.26 Of 37 cases(70%)that did not undergo surgical sterilization had a desire for pregnancy after the *** of these cases(23%)were diagnosed with secondary *** fertility rate of these cases was 77%,and subsequent pregnancy was detected in 20 women.A total of 25 pregnancies,including first and second pregnancies,developed,and 15 of these pregnancies resulted in term delivery,six preterm births,one stillbirth,and three ***:The postoperative pregnancy rate was found to be higher than the rate of women with infertility problems,and this surgery does not seem to adversely affect pregnancy *** is a tertiary center experience and cohort studies with large patient series are needed.

关键词： Fertility Iliac artery Ligations Postpartum hemorrhage Pregnancy outcomes

Evaluation of Interferon-Gamma Release Assay Testing and Tuberculin Skin Test for Early Diagnosis of Tuberculosis in Children and Adolescents

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Open Journal of Pediatrics 2024年第3期14卷 558-567页

作者： Yelda Sorguç Miray Çelebi Yılmaz Yüce Ayhan Yakup yaman.Şener Tulumoğlu Aybüke Akaslan kara İlker Devrim University of Health Sciences Dr. Beh&#231et Uz Child Disease and Pediatric Surgery Training and Research Hospital Medical Microbiology &#304zmir T&#252rkiye Department of Pediatric Infectious Diseases University of Health Sciences Dr. Beh&#231et Uz Child Disease and Pediatric Surgery Training and Research Hospital &#304zmir T&#252rkiye

Background: This study aimed to evaluate the diagnostic value of interferon-γ release assay (IGRA), a sensitive microbiological diagnostic method, in children and adolescents with suspected tuberculosis in a country with a high burden of tuberculosis. Method: This study included 581 children and adolescents aged 4 - 19 years who were suspected of having tuberculosis, were latently infected with Mycobacterium tuberculosis, and had received at least one dose of BCG vaccine between April 17, 2019, and February 24, 2021. The study evaluated the TST results of 106 patients who had a positive Quantiferon test and were suspected of having tuberculosis. Results: The study included 581 patients aged between 4 and 19 years. Of these, 106 patients tested positive for the Quantiferon test, while 19 were indeterminate and 456 were negative. The Quantiferon test positivity rate was 18.24%. Among the 106 QFT-Plus-positive cases, 23 patients also tested positive for TST. The difference in distribution was found to be statistically significant. Conclusion: The QFT-Plus test is considered an alternative to TST and other microbiological diagnostic methods for early tuberculosis diagnosis, particularly in children and adolescents.

关键词： Interferon Gamma Release Assay Children Tuberculin Test Children Latent Tuberculosis

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女子花滑服装的审美变迁

服装设计师 2024年第8期 100-103页

作者：赵静李亚曼天津师范大学美术与设计学院服装系天津师范大学美术与设计学院

从设计美学角度对西方女子花样滑冰服装的变化进行系统分析,并从审美文化角度对各个时代花滑服装的服饰特征总结阐述。主要结论:女子花滑服装形式上回归本体,表现在服装款式的简化和对运动员本体的欣赏。在服装美学上服装语言螺旋式上升... 详细信息

从设计美学角度对西方女子花样滑冰服装的变化进行系统分析,并从审美文化角度对各个时代花滑服装的服饰特征总结阐述。主要结论:女子花滑服装形式上回归本体,表现在服装款式的简化和对运动员本体的欣赏。在服装美学上服装语言螺旋式上升,从穿着机能性上改变花滑服的长度;从欣赏角度形成了从服装美感到人体美感以及现在二者结合后形成的现当代多元美学的更替;从裁判对艺术表现力得分评定方面回归装饰与功能性平衡局面。

关键词：女性花样滑冰服装流变审美内涵西方

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护理领域系统评价的报告要素与问题分析

中华护理杂志 2024年第3期59卷 281-286页

作者：范蕾宋继红陈少华杨辛茹赵亚曼吴杰灵福建医科大学护理学院福州市350122

系统评价通过全面而系统地收集现有证据,采用临床流行病学方法,严格评价证据质量,定性或定量地合并研究结果,最终为解决某一聚焦的临床问题提供可靠依据。护理类系统评价论文发表数量不断增长,但是报告质量参差不齐。该文总结护理类系... 详细信息

系统评价通过全面而系统地收集现有证据,采用临床流行病学方法,严格评价证据质量,定性或定量地合并研究结果,最终为解决某一聚焦的临床问题提供可靠依据。护理类系统评价论文发表数量不断增长,但是报告质量参差不齐。该文总结护理类系统评价的报告要素,围绕其关键步骤,参考报告规范,分析系统评价报告中的常见问题,以期为护理研究者提供参考。

关键词：系统评价 PRISMA清单报告规范护理

中昆仑山北坡极端暴雨对流—对称不稳定性及其触发机制分析

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大气科学 2024年第3期48卷 987-1011页

作者：周雅蔓刘兆旭刘晶杨霞张萌周玉淑新疆维吾尔自治区气象台乌鲁木齐830002 中国气象局乌鲁木齐沙漠气象研究所乌鲁木齐830002 中亚大气科学研究中心乌鲁木齐830002 中国科学院大气物理研究所云降水物理与强风暴实验室北京100029 中国科学院大学地球科学学院北京100049

本文利用ERA-50.25°×0.25°再分析资料,通过计算2020年5月6~7日中昆仑山北坡极端暴雨天气过程中湿位涡和锋生函数,给出暴雨过程大气不稳定性演变特征,明确锋面系统在对流触发中的作用,并得出以下结论:(1)本次中昆仑山北坡暴雨期间,200... 详细信息

本文利用ERA-50.25°×0.25°再分析资料,通过计算2020年5月6~7日中昆仑山北坡极端暴雨天气过程中湿位涡和锋生函数,给出暴雨过程大气不稳定性演变特征,明确锋面系统在对流触发中的作用,并得出以下结论:(1)本次中昆仑山北坡暴雨期间,200 hPa高空两支急流造成辐散叠加区,500 hPa中亚低涡、高原北部切变线缓慢移动过程中,配合低层700 hPa地形辐合抬升、地面高压前冷气团与塔里木盆地暖气团交汇,为中昆仑山北坡浅山区云团发展提供有利的动力、热力条件。(2)暴雨分为两个阶段,第一阶段(EP1)于田至且末一线降水期间,对流层低层暴雨区为对流不稳定大气层结;第二阶段(EP2-1)策勒地区短时强降水期间,策勒对流层低层逐渐由对流不稳定大气转为条件对称不稳定大气层结,对流层低层Mpv2变化由大气的湿斜压性和低层水平风的垂直切变所造成;受前期降水和凝结潜热释放影响,第二阶段(EP2-2)策勒至洛浦一线低层增暖增湿,对流层低层转为对流不稳定大气层结。(3)地形辐合抬升是第一阶段降水中尺度云团生成的主要原因,低层冷锋锋生触发对流不稳定能量释放,且末附近云团迅速发展,同时塔里木盆地气流沿地形爬坡至高原北部,在500 hPa附近冷锋锋生,与高原北侧暖锋短时间对峙形成冷式锢囚锋,锋面附近垂直运动增强使得对流云团快速发展,与且末附近对流云团合并加强,造成第一阶段(EP1)于田至且末一线降水天气;第二阶段(EP2-1)策勒短时强降水期间,对流层低层700 hPa冷锋锋生,云团移动方向暖湿入流气流与云下蒸发和云后入流冷气团相遇,暖气团沿底层冷池进一步爬升,使得云团迅速发展至成熟阶段,造成策勒地区出现短时强降水天气;随着中亚低涡逐渐进入研究区,对流层低层—中层冷锋锋生,进一步加强了上升运动的发展,是第二阶段(EP2-2)策勒至洛浦一线持续性降水天气的重要原因。

关键词：中昆仑山北坡暴雨对流—对称不稳定触发机制

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基于双模通信技术的新能源汽车充电桩设计

长江信息通信 2024年第1期37卷 48-51页

作者：李庆乐韦雅曼广西盛洲北斗科技有限公司广西南宁530007 南宁职业技术学院广西南宁530008

新能源汽车充电桩是一个高功率的充电设备,在充电桩充电的过程中,电网电压、电流谐波等都会受到一定的影响,进而对电能计量造成干扰,使电网的可靠性、安全性和公平性难以保证。文章设计了一款基于双模通信技术的新能源汽车充电桩,采用HP... 详细信息

新能源汽车充电桩是一个高功率的充电设备,在充电桩充电的过程中,电网电压、电流谐波等都会受到一定的影响,进而对电能计量造成干扰,使电网的可靠性、安全性和公平性难以保证。文章设计了一款基于双模通信技术的新能源汽车充电桩,采用HPLC+HRF双模通信模块,提高充电桩数据采集的稳定性,保证通信效率和通信可靠性。

关键词： HPLC HRF 双模通信新能源汽车充电桩

6D pose annotation and pose estimation method for weak-corner objects under low-light conditions

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Science China(Technological Sciences) 2023年第3期66卷 630-640页

作者： JIANG ZhiHong CHEN JinHong JING yaman.HUANG Xiao LI Hui School of Mechatronic Engineering Beijing Institute of TechnologyBeijing 100081China Beijing Advanced Innovation Center for Intelligent Robots and Systems Beijing 100081China key Laboratory of Biomimetic Robots and Systems Ministry of EducationBeijing 100081China

In unstructured environments such as disaster sites and mine tunnels,it is a challenge for robots to estimate the poses of objects under complex lighting backgrounds,which limit their *** to the shadows produced by a point light source,the brightness of the operation scene is seriously unbalanced,and it is difficult to accurately extract the features of *** is especially difficult to accurately label the poses of objects with weak corners and *** study proposes an automatic pose annotation method for such objects,which combine 3D-2D matching projection and rendering technology to improve the efficiency of dataset annotation.A 6D object pose estimation method under low-light conditions(LP_TGC)is then proposed,including(1)a light preprocessing neural network model based on a low-light preprocessing module(LPM)to balance the brightness of a picture and improve its quality;and(2)a 6D pose estimation model(TGC)based on the keypoint *** typical datasets are constructed to verify our method,the experimental results validated and demonstrated the effectiveness of the proposed LP_TGC *** estimation model based on the preprocessed image can accurately estimate the pose of the object in the mentioned unstructured environments,and it can improve the accuracy by an average of~3%based on the ADD metric.

关键词： 6D object pose estimation 6D pose annotation low-light conditions