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三维超声联合实时剪切波弹性成像对女性盆底功能障碍的诊断价值

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临床医学工程 2024年第9期31卷 1053-1054页

作者：张超楠刘敏新乡市中心医院超声一科河南新乡453000

目的探讨三维超声联合实时剪切波弹性成像(SWE)对女性盆底功能障碍(PFD)的诊断价值。方法选取2022年1月至2023年12月于我院进行产后复查的42例PFD产妇作为研究组,另选取同期我院产后复查盆底功能正常的45例产妇作为对照组。两组产妇均... 详细信息

目的探讨三维超声联合实时剪切波弹性成像(SWE)对女性盆底功能障碍(PFD)的诊断价值。方法选取2022年1月至2023年12月于我院进行产后复查的42例PFD产妇作为研究组,另选取同期我院产后复查盆底功能正常的45例产妇作为对照组。两组产妇均行三维超声及实时SWE检查。比较两组静息及最大缩肛状态肛提肌裂孔面积(LHA)、左右径(LHLD)、前后径(LHAP)及杨氏模量值,并分析LHA、LHLD、LHAP及杨氏模量值单项及联合诊断PFD的效能情况。结果研究组静息及最大缩肛状态LHA、LHLD、LHAP高于对照组,杨氏模量值低于对照组(P<0.05);绘制受试者工作特征(ROC)曲线分析结果显示,LHA、LHLD、LHAP及杨氏模量值联合诊断PFD的曲线下面积(AUC)为0.862,高于各指标单独诊断。结论三维超声联合实时SWE检查能够更为准确地评估盆底功能,用于诊断女性PFD价值较高。

关键词：女性盆底功能障碍三维超声实时剪切波弹性成像诊断价值

Luspatercept enhances hemoglobin levels in a Chinese boy with congenital sideroblastic anemia:A case report

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World Journal of Clinical Cases 2024年第19期12卷 3978-3984页

作者： Yuan Li Lei Ye Kang Zhou Hui-Hui Fan Jian-Ping Li you-Zhen Xiong Yang Yang Guang-Xin Peng Wen-Rui Yang Xin Zhao Li-Ping Jing Li Zhang Feng-Kui Zhang Anemia Therapeutic Center Institute of Hematology and Blood Diseases HospitalChinese Academy of Medical SciencePeking Union Medical CollegeTianjin 300020China

BACKGROUND Congenital sideroblastic anemia(CSA)is a rare and heterogeneous group of genetic *** treatment include pyridoxine(vitamin B6)and allogeneic hematopoietic stem cell transplantation(allo-HSCT),and can alleviate anemia in the majority of ***,some CSA cases remain unresponsive to pyridoxine or are unable to undergo *** management approaches is necessary to be *** explore the response of luspatercept in treating congenital sideroblastic *** SUMMARY We share our experience in luspatercept in a 4-year-old male patient with *** was administered subcutaneously at doses of 1.0 mg/kg/dose to 1.25 mg/kg/dose every 3 wk,three consecutive doses,evaluating the hematological *** leading to a significant improvement in the patient's *** median hemoglobin during the overall treatment with three doses of luspatercept was 90(75-101)g/L,the median absolute reticulocyte count was 0.0593(0.0277-0.1030)×10^(12)/L,the median serum ferritin was 304.3(234.4-399)ng/mL,and the median lifespan of mature red blood cells was 80(57-92)***,no adverse reactions,such as headaches,dizziness,vomiting,joint pain,or back pain,were observed during the treatment *** We believe that luspatercept might emerge as a viable therapeutic option for the maintenance treatment of CSA or as a bridging treatment option before hematopoietic stem cell transplantation.

关键词： Anemia Sideroblastic anemia Luspatercept Congenital Lifespan of mature red blood cells Microcytic anemia Case report

一种基于深度学习的新型针灸针自动计数的云服务系统:提高针灸安全性的策略

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Digital Chinese Medicine 2024年第1期7卷 40-46页

作者：黄梓皓韦君逸陈海勇吴凤亮香港大学李嘉诚医学院中医药学院中国香港999077 Department of Mathematics and Statistics Georgetown UniversityWashington D.C.20057USA 香港理工大学康复科学系中国香港999077

目的病人针灸治疗时,漏针可能造成严重后果。为增强针灸安全性,本研究将开发一个基于深度学习的自动云端数针系统。方法本研究利用拍有针灸针的手机图片为曾预先训练的定向目标检测模型(Oriented R-CNN)进行转移学习,以开发一种能够自... 详细信息

目的病人针灸治疗时,漏针可能造成严重后果。为增强针灸安全性,本研究将开发一个基于深度学习的自动云端数针系统。方法本研究利用拍有针灸针的手机图片为曾预先训练的定向目标检测模型(Oriented R-CNN)进行转移学习,以开发一种能够自动计算图片中针灸针数量的目标检测算法。我们首先拍摄了一个包含590张图片的训练集以及一个包含1025张图片的验证集。随后在带有NVIDIA Tesla T4图形处理器(GPU)的Google Colab环境中部署了MMRotate工具箱为模型进行训练。我们将训练的模型与Telegram bot手机小程序界面集成,并评估模型的准确率、精确率和召回率。本小程序中云端数针系统的速度则以端到端处理时间计算。结果在每张图片20根针的验证集情景中,我们的定向检测模型在准确率、精确率和召回率上分别达到96.49%、99.98%和99.84%,平均端到端处理时间为1.535秒。结论这项云服务系统在速度、准确性和可靠性上的提升展示了深度学习物体检测技术改进针灸实践的潜力。

关键词：人工智能电脑视觉目标检测针灸病人安全

曲克芦丁联合双联抗血小板方案对急性脑梗死患者神经功能及预后的影响

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临床医学工程 2024年第6期31卷 687-688页

作者：高应亮江远义江西省鄱阳县人民医院急诊科江西上饶333100

目的探讨曲克芦丁联合双联抗血小板方案治疗急性脑梗死(ACI)患者的临床效果。方法选取2020年8月至2023年2月我院收治的70例ACI患者,随机分为两组各35例。在常规治疗基础上,对照组给予双联抗血小板药物(阿司匹林+氯吡格雷)治疗,治疗组在... 详细信息

目的探讨曲克芦丁联合双联抗血小板方案治疗急性脑梗死(ACI)患者的临床效果。方法选取2020年8月至2023年2月我院收治的70例ACI患者,随机分为两组各35例。在常规治疗基础上,对照组给予双联抗血小板药物(阿司匹林+氯吡格雷)治疗,治疗组在对照组基础上给予曲克芦丁治疗。比较两组的临床疗效、神经功能以及预后质量。结果治疗组的总有效率为94.29%,高于对照组的77.14%(P<0.05)。治疗后,治疗组的NIHSS评分低于对照组,BI评分高于对照组(P<0.05)。结论曲克芦丁联合双联抗血小板方案治疗ACI患者的效果显著,能够有效促进患者神经功能恢复,改善预后。

关键词：急性脑梗死曲克芦丁阿司匹林氯吡格雷神经功能预后

基于Swin Transformer的遥感图像超分辨率重建

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计算机系统应用 2024年第9期33卷 85-94页

作者：孔锐冉友红暨南大学智能科学与工程学院珠海519070

由于遥感图像中的物体具有不确定性,同时不同图像之间的特征信息差异较大,导致现有超分辨率方法重建效果差,因此本文提出一种结合Swin Transformer和N-gram模型的ng-MAT模型来实现遥感图像超分辨率.首先,在原始Transformer计算自注意力... 详细信息

由于遥感图像中的物体具有不确定性,同时不同图像之间的特征信息差异较大,导致现有超分辨率方法重建效果差,因此本文提出一种结合Swin Transformer和N-gram模型的ng-MAT模型来实现遥感图像超分辨率.首先,在原始Transformer计算自注意力的分支上并联多注意力模块,用于提取全局特征信息来激活更多像素.其次,将自然语言处理领域的N-gram模型应用到图像处理领域,用三元N-gram模型来加强窗口之间的信息交互.本文提出的方法在所选取的数据集上,峰值信噪比在放大因子为2、3、4时达到了34.68 dB、31.03 dB、28.99 dB,结构相似度在放大因子为2、3、4时达到了0.9266、0.8444、0.7734,实验结果表明,本文提出的方法各个指标都优于其他同类方法.

关键词： Swin Transformer 超分辨率 N-gram 遥感图像

Production of rhamnolipids-producing enzymes of Pseudomonas in E. coli and structural characterization

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Frontiers of Chemical Science and Engineering 2017年第1期11卷 133-138页

作者： Kata Kiss Wei Ting ng Qingxin Li Institute of Chemical & Engineering Sciences Agency for Science Technology and Research Jurong Island 627833 Singapore

Rhamnolipids are a class ofbiosurfactants that have a great potential to be used in industries. Five proteins/enzymes, namely RhlA, RhlB, RhlC, RhlG and RhlI, are critical for the production of rhamnolipids in Pseudomonas aeruginosa. Four of the 5 proteins except RhlC were successfully over-expressed in E. coli and three of them （RhlA, RhlB and RhlI） were purified and obtained in milligram quantities. The purified proteins were shown to be folded in solution. Homology models were built for RhlA, RhlB and RhlI. These results lay a basis for further structural and functional characterization of these proteins in vitro to favor the construction of super strains for rhamnolipids production.

关键词： rhamnolipids Pseudomonas RhlA RhlB,RhlI protein folding

Preconditioned Iterative Methods for Algebraic Systems from Multiplicative Half-Quadratic Regularization Image Restorations

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Numerical Mathematics(Theory,Methods and Applications) 2010年第4期3卷 461-474页

作者： Michael K.ng Department of Mathematics Hong Kong Baptist UniversityKowloon TongHong Kong

Image restoration is often solved by minimizing an energy function consisting of a data-fidelity term and a regularization term.A regularized convex term can usually preserve the image edges well in the restored *** this paper,we consider a class of convex and edge-preserving regularization functions,i.e.,multiplicative half-quadratic regularizations,and we use the Newton method to solve the correspondingly reduced systems of nonlinear *** each Newton iterate,the preconditioned conjugate gradient method,incorporated with a constraint preconditioner,is employed to solve the structured Newton equation that has a symmetric positive definite coefficient matrix. The eigenvalue bounds of the preconditioned matrix are deliberately derived,which can be used to estimate the convergence speed of the preconditioned conjugate gradient *** use experimental results to demonstrate that this new approach is efficient, and the effect of image restoration is reasonably well.

关键词： Edge-preserving image restoration multiplicative half-quadratic regularization Newton method preconditioned conjugate gradient method constraint preconditioner eigenvalue bounds

The effect of variable viscosity on the flow and heat transfer of a viscous Agwater and Cu-water nanofluids

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Journal of Hydrodynamics 2013年第1期25卷 1-9页

作者： VAJRAVELU Kuppalapalle PRASAD Kerehalli Vinayaka ng Chiu-On Department of Mathematics University of Central Florida Department of Mathematics VSK University Department of Mechanical Engineering The University of Hong Kong

A numerical study is carried out to study the effects of the temperature dependent viscosity on the flow and heat transfer of a nanofluid over a flat surface in the presence of viscous dissipation. The governing nonlinear partial differential equations are transformed into nonlinear ordinary differential equations, and are solved numerically by the Keller-box method. The numerical results indicate that the effect of nanoparticle volume fraction is to increase the heat transfer and hence enhance the thermal boundary layer thickness. This is true even in the presence of variable viscosity and the viscous dissipation. Furthermore, the results obtained for heat transfer characteristics with nanoparticles reveal many interesting behaviors that warrant further study on the effects of the ＂nano-solid-particles＂.

关键词： nanofluid particles variable viscosity boundary layers viscous dissipation Keller-box method

Measuring gravitational effect of superintense laser by spin-squeezed Bose-Einstein condensates interferometer

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Chinese Physics B 2022年第5期31卷 265-273页

作者： Eng Boon ng C.H.Raymond Ooi Department of Physics University of MalayaKuala Lumpur 50603Malaysia

We consider an extremely intense laser,enclosed by an atom *** gravitational potential generated from the high-intensity laser is solved from the Einstein field equation under the Newtonian *** compute the strength of the gravitational force and study the feasibility of measuring the force by the atom *** intense laser field from the laser pulse can induce a phase change in the interferometer with Bose-Einstein *** push up the sensitivity limit of the interferometer with Bose-Einstein condensates by spin-squeezing effect and determine the sensitivity gap for measuring the gravitational effect from intense laser by atom interferometer.

关键词： intense laser field atom interferometer Bose-Einstein condensates spin-squeezing