Results 51 to 60 of about 5,641 (169)
Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 2, Page 135-146, August 2025.ABSTRACT Objective To derive pooled estimates of maternal, fetal and pediatric outcomes up to the age of 30 months in patients undergoing pre‐ or postnatal surgery for open spina bifida (OSB). Methods A systematic search was conducted in MEDLINE, PubMed (non‐MEDLINE records), Embase, Web of Science, ClinicalTrials.gov, Cochrane Central Register of ...
Y. Kunpalin +10 more
wiley +1 more source
Dianci bileiqi, 2022 针对近期某省内发生的一起在复杂山地地形下的220 kV输电线路闪络放电故障，结合现场实际数据对故障的情况进行分析。首先依据现场实际地形、杆塔和气象数据，采用未考虑地形风速影响的传统设计计算方法得到线路故障段风偏位移，所得风偏后的放电间距满足导线设计安全距离要求；而后利用自主研发的Transpert输电线路专家系统中的高程数据建立现场实际复杂山地地形的三维模型，通过ANSYS有限元风场仿真得到故障点风速分布，并计算得到地形风速加速影响后的输电线路风偏角，发现考虑山地风速加速后的风偏放电间距小于安全距离 ...
doaj
Wildlife Letters, Volume 3, Issue 2, Page 73-83, June 2025.Blue sheep in Dhorpatan Hunting Reserve prefer alpine grasslands at 3800–4200 m on south‐facing slopes near water resources, favoring areas with low tree cover and dense ground cover, particularly rhododendrons, junipers, and Cyperaceae grasses. Their habitat significantly overlaps with livestock.
Amit Adhikari +4 more
wiley +1 more source
±1100 kV昌吉换流站与±800 kV天山换流站共同作用的直流偏磁问题研究
Gaoya dianqi, 2020 针对±800 kV天山—中洲特高压直流输电工程和±1 100 kV昌吉—古泉特高压直流输电工程同时以单极大地方式运行时,新疆电网内厂站面临的变压器直流偏磁风险,提出了研究方法和应对策略:首先,利用电磁测深对两接地极周边土壤进行了冬夏两季实测,在实测的土壤电阻率基础上构建了两接地极同时作用下的电网直流电流分布模型;其次,对新疆电网直流偏磁风险进行仿真计算分析,发现不同季节土壤电阻率不同,且冬季直流偏磁风险较大,两双接地极同时注入直流时,原本没有直流偏磁风险的厂站也会存在风险;最后 ...
孙冰 +5 more
doaj
Design of BT620S Stereo Bluetooth Headset [PDF]
, 2009 蓝牙技术是一种无线数据与语音通信的开放性全球规范，它以低成本的近距离无线连接为基础，为固定与移动设备通信环境建立一个无缝连接。现今，蓝牙技术在实际中已经有广泛的应用。由于手机的普及率较高，因此蓝牙手机成为目前蓝牙技术的主要应用，而与之相匹配的蓝牙耳机则以其便携性和安全性等特点也正在逐渐受到消费者的青睐。因此，设计出一种具有功能强、性能高、成本低的蓝牙耳机已成为蓝牙技术领域的一个重要课题。 本文设计了一种型号为BT620S的立体声蓝牙耳机。从硬件、射频、软件和声学几个方面详细介绍了整个设计过程。 在电路中，
张玉强
core
, 2021 Objective To explore the clinical effect of Traditional Chinese Medicine (TCM)decoction cupping combined with wet compress therapy in the treatment of hemiplegia caused by stroke.
HU Zhe (胡哲) +4 more
core +1 more source
Politics &Policy, Volume 53, Issue 3, June 2025.ABSTRACT Climate change is increasing pressure on policymakers and the public to face perceived trade‐offs between economic growth and environmental sustainability, but is it possible to fulfill human needs within the ecological limits of the planet? This article investigates how the public prioritizes this trade‐off. We analyze the drivers of citizens'
Soomin Oh, David Hudson, Jennifer Hudson
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2005 通过分析太阳黑子、赤道平流层纬向风与西北太平洋上热带气旋的关系发现，赤道平流层纬向风的准两年振荡与西北太平洋上热带气旋确实具有很好的关系，这种关系受到太阳活动的调控.当太阳黑子为小年时，在赤道纬向风的西风年，西北太平洋上生成的热带气旋较多，强度偏弱；东风年，气旋较少，强度较强.在太阳黑子大年，与小年的情况相反，东风年时热带气旋较多，强度较弱；西风年，气旋较少，强度较强.
TIANRong-xiang(田荣湘)
doaj +1 more source
, 1996 针灸处方配穴规律初探郭玉琴厦门大学海外教育学院针灸教研室（厦门361005）针灸处方，即针灸临床治疗的用穴方案，包括单穴处方和配穴处方。单穴处方是指用针灸治疗疾病时，针对某一病证只用1个腧穴进行针刺或艾灸的用穴方案；配穴处方是指用针灸治疗疾病时，针对..
郭玉琴
core
Ultrasound in Obstetrics &Gynecology, Volume 65, Issue 5, Page 552-559, May 2025.ABSTRACT Objective To critically review the literature and synthesize evidence on the incremental yield of prenatal exome sequencing (PES) in fetuses with an apparently normal phenotype with a normal G‐banded karyotype or chromosomal microarray (CMA).
A. Sotiriadis +5 more
wiley +1 more source