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非线性压电俘能器宽频技术的研究综述

机械设计与制造 2024年第5期399卷 381-384页

作者：丁江卢蒙恩邓爱平广西大学机械工程学院广西南宁530004 广西制造系统与先进制造技术重点实验室广西南宁530004

压电俘能器可以将环境中的振动能转换成电能,以自供能的方式满足低功耗产品的能量供应。然而,大多数压电俘能技术主要利用悬臂梁的线性振动原理,而且其有效频率带宽狭窄,极大限制了压电俘能器在实际中的应用。因此,通过拓宽压电俘能器... 详细信息

压电俘能器可以将环境中的振动能转换成电能,以自供能的方式满足低功耗产品的能量供应。然而,大多数压电俘能技术主要利用悬臂梁的线性振动原理,而且其有效频率带宽狭窄,极大限制了压电俘能器在实际中的应用。因此,通过拓宽压电俘能器的工作频带宽度的方法提高能量采集效率,成为当前压电领域的一项热门研究。为此对非线性压电俘能器宽频技术进行总结分析,并介绍了其工作原理、常用的压电材料和工作模式,最后对压电俘能器的未来发展方向提出了思考与展望。

关键词：压电俘能器能量采集宽频技术自供能

Auxiliary Equation Method and New Exact Solutions of BKP Equation

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Chinese Quarterly Journal of Mathematics 2008年第2期23卷 159-164页

作者： MA Hong-cai ZHANG Ya-li deng ai-ping College of Science Donghua University Shanghai 201620 China Department of Mathematics and Computer Science Xinyang Vocational and Technical College Xinyang 464000 China

在这篇论文，辅助方程方法为在符号的 computation.We 学习的帮助下构造非线性的部分微分方程的更一般的准确答案被建议( 2+1 )维的 BKP 方程并且让这能也是的使用的旅行波浪 solutions.The 方法的一系列新类型扩大了到另外的非线性的... 详细信息

在这篇论文，辅助方程方法为在符号的 computation.We 学习的帮助下构造非线性的部分微分方程的更一般的准确答案被建议( 2+1 )维的 BKP 方程并且让这能也是的使用的旅行波浪 solutions.The 方法的一系列新类型扩大了到另外的非线性的部分微分方程。

关键词：任意方程法 BKP方程精确解解题方法

新发2型糖尿病患者维生素D与胰岛素抵抗的相关性

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广东医学 2024年第3期45卷 356-360页

作者：孙燕李青华廖慧敏邓爱平刘竹芬李婉媚广州市第十二人民医院内分泌科广东广州510620

目的探讨新发2型糖尿病(type 2 diabetes mellitus,T2DM)患者25-羟基维生素D3[25(OH)D3]水平与胰岛素抵抗、尿pH值等因素的相关性。方法分别测定325例非糖尿病患者(对照组)及208例新发T2DM患者(新发T2DM组)的25(OH)D_(3)水平,并根据25(O... 详细信息

目的探讨新发2型糖尿病(type 2 diabetes mellitus,T2DM)患者25-羟基维生素D3[25(OH)D3]水平与胰岛素抵抗、尿pH值等因素的相关性。方法分别测定325例非糖尿病患者(对照组)及208例新发T2DM患者(新发T2DM组)的25(OH)D_(3)水平,并根据25(OH)D_(3)水平将新发T2DM患者分成新发T2DM患者维生素D缺乏组(n=92)及新发T2DM患者维生素D非缺乏组(n=116)。非缺乏组25(OH)D_(3)水平为20~100 ng/mL;缺乏组25(OH)D_(3)水平为0.05)。Logistic回归分析显示,糖化血红蛋白(OR=1.776,P<0.05)、胰岛素抵抗指数(OR=1.289,P<0.05)是新发T2DM患者维生素D缺乏的危险因素。结论新发T2DM患者25(OH)D_(3)水平低于对照组。较高的糖化血红蛋白和胰岛素抵抗指数是T2DM合并维生素D缺乏的危险因素。

关键词： 25-羟基维生素D_(3) 糖化血红蛋白胰岛抵抗指数尿pH值游离三碘甲状腺原氨酸游离甲状腺素 2型糖尿病

广东省2006-2017年恙虫病流行特征分析

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广东省2006-2017年恙虫病流行特征分析

Acquiring Weak Annotations for Tumor Localization in Temporal and Volumetric Data

新发与再发传染病研究论坛

作者：彭佳张萌彭志强 deng ai-ping ZHANG Yin-tao 广东省疾病预防控制中心

目的分析广东省2006-2017年恙虫病报告发病资料,为开展有针对性预防控制提供参考依据。方法对广东省2006-2017年报告的恙虫病病例数据,采用描述性流行病学方法进行分析。结果 2006-2017年广东省共报告恙虫病病例数31726例,死亡30例。发... 详细信息

目的分析广东省2006-2017年恙虫病报告发病资料,为开展有针对性预防控制提供参考依据。方法对广东省2006-2017年报告的恙虫病病例数据,采用描述性流行病学方法进行分析。结果 2006-2017年广东省共报告恙虫病病例数31726例,死亡30例。发病呈逐年增加的趋势,2006-2017年恙虫病发病率在0.41-5.53/10万之间,5-11月为发病高峰,呈双峰分布,6-7月份达最高峰,9-10月份次高峰,属于夏秋季型。6月份报告病例数占全年总数的17.77%(5637/31726)。平均发病率居前5位的地市分别是广州、肇庆、云浮、韶关、惠州,平均发病数居前5位的地市为广州、肇庆、云浮、茂名、韶关,这5市病例数小计占全省总病例数的75.96%;女性发病率高于男性(P<0.01)。40岁以上的报告病例数占报告病例总数的71.45%;农民占57.99%,学生占7.34%,家务及待业占6.88%,三者合计72.21%,其他人群占27. 79%。结论广东省恙虫病发病高峰在夏秋季,广东省均有病例报告,有地区聚集性,以农村为主。。建议加强恙虫病的监测和防治知识的宣传教育。

关键词：恙虫病流行病学特征

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Machine Intelligence Research 2024年第2期21卷 318-330页

作者： Yu-Cheng Chou Bowen Li deng-ping Fan Alan Yuille Zongwei Zhou Department of Computer Science Johns Hopkins UniversityBaltimore 21218USA Computer Vision Lab ETH ZurichZurich 8001Switzerland

Creating large-scale and well-annotated datasets to train ai algorithms is crucial for automated tumor detection and localization.However,with limited resources,it is challenging to determine the best type of annotations when annotating massive amounts of unlabeled data.To address this issue,we focus on polyps in colonoscopy videos and pancreatic tumors in abdominal CT scans;Both applications require significant effort and time for pixel-wise annotation due to the high dimensional nature of the data,involving either temporary or spatial dimensions.In this paper,we develop a new annotation strategy,termed Drag&Drop,which simplifies the annotation process to drag and drop.This annotation strategy is more efficient,particularly for temporal and volumetric imaging,than other types of weak annotations,such as per-pixel,bounding boxes,scribbles,ellipses and points.Furthermore,to exploit our Drag&Drop annotations,we develop a novel weakly supervised learning method based on the watershed algorithm.Experimental results show that our method achieves better detection and localization performance than alternative weak annotations and,more importantly,achieves similar performance to that trained on detailed per-pixel annotations.Interestingly,we find that,with limited resources,allocating weak annotations from a diverse patient population can foster models more robust to unseen images than allocating per-pixel annotations for a small set of images.In summary,this research proposes an efficient annotation strategy for tumor detection and localization that is less accurate than per-pixel annotations but useful for creating large-scale datasets for screening tumors in various medical modalities.

关键词： Weak annotation detection localization segmentation colonoscopy abdomen

P2P Energy Trading Considering Prosumer Preference and System Risk

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CSEE Journal of Power and Energy Systems 2024年第3期10卷 1179-1194页

作者： Xinyu He ping Dong Mingbo Liu Xuewei Huang Wenli deng Ruijin He School of Electric Power Engineering South China University of TechnologyGuangzhou 510640China IEEE

As an important means of mobilizing demand-side resources,peer-to-peer(P2P)energy trading has drawn more and more attention from scholars.This paper constructs a P2P energy trading framework considering prosumers’trading partner preferences(TPPs)and system risk.At first,we build the P2P trading models of prosumers equipped with different distributed energy resources(DERs),and TPP models.Secondly,to solve the established energy trading problem,a fully distributed double-consensus alternating direction method of multipliers(DC-ADMM)is proposed,which can achieve transaction consensus when considering market players’TPPs.Then,a risk-based security constrained economic dispatch(RBSCED)model based on AC power flow is established for the first time,by which a distribution system operator(DSO)checks system security and obtains risk-based locational marginal prices(RLMPs).Moreover,double-regulated price signals related to RLMPs which contain grid utilization prices(GUPs)and DSO’s retail prices realize management of players’transactions.In the end,the proposed method is applied to an IEEE33 bus distribution system.Results show the proposed method effectively reduces system risk and ensures secure operation of system without direct management.

关键词： Double-consensus ADMM grid utilization price price signal risk-based locational marginal price trading partner preference

Internal limiting membrane peeling combined with silicone oil or air tamponade for highly myopic foveoschisis

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International Journal of Ophthalmology(English edition) 2024年第6期17卷 1079-1085页

作者： Jin deng Wen-Tao Sun Ke Gong Li-ping Wang Feng-Zhi Li Xi’an People’s Hospital(Xi’an Fourth Hospital) Shaanxi Eye HospitalAffiliated People’s Hospital of Northwest UniversityXi’an 70004Shaanxi ProvinceChina

aiM:To compare the efficacy of pars plana vitrectomy(PPV)combined with internal limiting membrane(ILM)and silicone oil or sterile air tamponade for the treatment of myopic foveoschisis(MF)in highly myopic eyes.METHODS:This retrospective study included 48 myopic eyes of 40 patients with MF and axial lengths(ALs)ranging from 26-32 mm treated between January 2020 and January 2022.All patients were underwent PPV combined with ILM peeling followed by sterile air or silicone oil tamponade and followed up at least 12mo.Based on the features on spectral-domain optical coherence tomography(SD-OCT),the eyes were divided into the MF-only group(Group A,n=15 eyes),MF with central foveal detachment group(Group B,n=20 eyes),and MF with lamellar macular hole group(Group C,n=13 eyes).According to AL,eyes were further divided into three groups:Group D(26.01-28.00 mm,n=12 eyes),Group E(28.01-30.00 mm,n=26 eyes),and Group F(30.01-32.00 mm,n=10 eyes).The best-corrected visual acuity(BCVA),central foveal thickness(CFT),and complications were recorded.RESULTS:The patients included 16 males and 24 females with the mean age of 56±9.82y.The BCVA and CFT improved in all groups after surgery(P0.05).The intergroup differences of BCVA and CFT postoperatively were statistically significant in Group D,E,and F.Twenty eyes were injected with sterile air,and 28 eyes were injected with silicone oil for tamponade based on the AL.However,there was no statistically significant difference among Groups D,E,and F in terms of the results of sterile air or silicone oil tamponade.The mean recovery time was 5.9mo for MF patients subjected to silicone oil tamponade and 7.7mo for patients subjected to sterile air tamponade,and the difference was not statistically significant.CONCLUSION:PPV and ILM peeling combined with silicone oil or sterile air tamponade can achieve good results for MF in highly myopic eyes with ALs≤32 mm.

关键词： axial length myopic foveoschisis highly myopic internal limiting membrane pars plana vitrectomy

Gossypol acetic acid regulates leukemia stem cells by degrading LRPPRC via inhibiting IL-6/JAK1/STAT3 signaling or resulting mitochondrial dysfunction

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World Journal of Stem Cells 2024年第4期16卷 444-458页

作者： Cheng-Jin ai Ling-Juan Chen Li-Xuan Guo Ya-ping Wang Zi-Yi Zhao Department of Laboratory Medicine Hospital of Chengdu University of Traditional Chinese MedicineChengdu 641000Sichuan ProvinceChina Department of Ophthalmology Hospital of Chengdu University of Traditional Chinese MedicineChengdu 641000Sichuan ProvinceChina Central Laboratory Hospital of Chengdu University of Traditional Chinese MedicineChengdu 641000Sichuan ProvinceChina Traditional Chinese Medicine Regulating Metabolic Diseases Key Laboratory of Sichuan Province Chengdu University of Traditional Chinese MedicineChengdu 641000Sichuan ProvinceChina

BACKGROUND Leukemia stem cells(LSCs)are found to be one of the main factors contributing to poor therapeutic effects in acute myeloid leukemia(AML),as they are protected by the bone marrow microenvironment(BMM)against conventional therapies.Gossypol acetic acid(GAA),which is extracted from the seeds of cotton plants,exerts anti-tumor roles in several types of cancer and has been reported to induce apoptosis of LSCs by inhibiting Bcl2.aiM To investigate the exact roles of GAA in regulating LSCs under different microenvironments and the exact mechanism.METHODS In this study,LSCs were magnetically sorted from AML cell lines and the CD34+CD38-population was obtained.The expression of leucine-rich pentatricopeptide repeat-containing protein(LRPPRC)and forkhead box M1(FOXM1)was evaluated in LSCs,and the effects of GAA on malignancies and mitochondrial RESULTS LRPPRC was found to be upregulated,and GAA inhibited cell proliferation by degrading LRPPRC.GAA induced LRPPRC degradation and inhibited the activation of interleukin 6(IL-6)/janus kinase(JAK)1/signal transducer and activator of transcription(STAT)3 signaling,enhancing chemosensitivity in LSCs against conventional chemotherapies,including L-Asparaginase,Dexamethasone,and cytarabine.GAA was also found to downregulate FOXM1 indirectly by regulating LRPPRC.Furthermore,GAA induced reactive oxygen species accumulation,disturbed mitochondrial homeostasis,and caused mitochondrial dysfunction.By inhibiting IL-6/JAK1/STAT3 signaling via degrading LRPPRC,GAA resulted in the elimination of LSCs.Meanwhile,GAA induced oxidative stress and subsequent cell damage by causing mitochondrial damage.CONCLUSION Taken together,the results indicate that GAA might overcome the BMM protective effect and be considered as a novel and effective combination therapy for AML.

关键词： Leukemia stem cells Gossypol acetic acid Reactive oxygen species Mitochondrial dysfunction Interleukin 6/janus kinase 1/signal transducer and activator of transcription 3 signaling

Clinical nursing value of predictive nursing in reducing complications of pregnant women undergoing short-term massive blood transfusion during cesarean section

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World Journal of Clinical Cases 2024年第1期12卷 51-58页

作者： Li Cheng Li-ping Li Yuan-Yuan Zhang Fang deng Ting-Ting Lan Department of Obstertrics Wuhan Third HospitalWuhan 430000Hubei ProvinceChina Department of Gynaecology Wuhan No.1 HospitalWuHan 430030Hubei ProvinceChina Center for Reproductive Medicine Department of Obstetrics and GynecologySichuan Provincial People's HospitalSchool of MedicineUniversity of Electronic Science and Technology of ChinaChengdu 610072Sichuan ProvinceChina

BACKGROUND Cesarean hemorrhage is one of the serious complications,and short-term massive blood transfusion can easily cause postoperative infection and physical stress response.However,predictive nursing intervention has important clinical significance for it.aiM To explore the effect of predictive nursing intervention on the stress response and complications of women undergoing short-term mass blood transfusion during cesarean section(CS).METHODS A clinical medical record of 100 pregnant women undergoing rapid mass blood transfusion during sections from June 2019 to June 2021.According to the different nursing methods,patients divided into control group(n=50)and observation group(n=50).Among them,the control group implemented routine nursing,and the observation group implemented predictive nursing intervention based on the control group.Moreover,compared the differences in stress res-ponse,complications,and pain scores before and after the nursing of pregnant women undergoing rapid mass blood transfusion during CS.RESULTS The anxiety and depression scores of pregnant women in the two groups were significantly improved after nursing,and the psychological stress response of the observation group was significantly lower than that of the control group(Pain scores improved significantly in both groups,with the observation group considerably less than the control group(Pain,reduce the incidence of complications,improve mood and stress response,and serve as a reference value for the nursing of women underg

关键词： Predictive care Rapid mass blood transfusion Cesarean section Stress response Complications