Results 21 to 30 of about 6,958 (130)
In Situ Uniform Lithium Enrichment for Dense, High‐Performance LLZO Solid Electrolytes
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT A major challenge in garnet‐type Li7La3Zr2O12 (LLZO) system all‐solid‐state electrolytes is the high porosity that typically remains after sintering, which compromises ionic conductivity and degrades battery cycling performance. To address this, we propose an innovative strategy to achieve uniform lithium enrichment on the surface of ...
Yi‐Yang Xiao +8 more
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Zhongguo shiyan zhenduanxue, 2007 目的探讨精子凋亡与精子密度、活力、形态关系。方法分析69例男性不育患者精液样本,采用计算机辅助精液分析进行精液参数检测,采用精子形态检测系统下人工修正方法进行精子形态分析,瑞-姬染色检测精子凋亡率。结果精子凋亡率与精子密度之间没有显著相关性（P>0.05）,精子凋亡率与精子活力、正常形态精子百分率之间有显著负相关性 ...
李然伟 +4 more
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Haiyang yu huzhao胭脂鱼(Myxocyprinus asiaticus)是亚洲特有的淡水珍稀鱼类，但由于人类活动和生态环境的变化，胭脂鱼数量急剧减少，研究其精子冷冻保存技术及建立精子冷冻保存库，对种质资源的保护和遗传育种具有重要意义。选取健康的雄性胭脂鱼，经人工催产后获得成熟精子，首先对4种精子稀释液种类(D-17、D-15、D-20、人工精浆A)、4种抗冻剂种类(DMSO、GLY、MeOH、PG)及4种DMSO抗冻剂浓度(6%、8%、10%、12%)进行筛选，其次选取筛选后冷冻效果最好的冻精与鲜精做受精实验 ...
丁 小雨 +8 more
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Fertility assessment in thalassemic men
Thalassemia Reports, 2017 Male infertility in β-thalassemia patients is typically considered to be the consequence of iron deposition in the endocrine glands. Adult male patients with β-thalassemia, on regular blood transfusions, are prone to developing acquired hypogonadism. The
Shahla Ansari +5 more
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智能科学与技术学报, 2022 城市路网结构对于交通拥堵的形成及其在时空上的传播过程具有重要的影响。然而，在基于传统交通模型或深度学习模型的研究中，交通模式的生成与传播往往并未考虑路网特征，且只能通过交通特征指标进行间接刻画，使得难以动态描述其在时间及空间维度上的特征，导致交通模式传播预测精准度不高且缺乏针对性。为了解决上述问题，提出了一种新型的基于交通模式推理的交通预测框架 TP2。该框架将拥堵传播模式建模为一个随时间变化的时序知识图谱，并使用一种包含了全新聚合函数RGraAN的推理框架进行时序推理，以捕捉交通拥堵的动态时变传播模式，
覃缘琪 +5 more
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Functional Ecology, Volume 39, Issue 6, Page 1550-1566, June 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Forests store substantial amounts of soil organic carbon (SOC), but SOC stocks differ strongly between forest ecosystems dominated by arbuscular mycorrhizal (AM) or ectomycorrhizal (EcM) fungi.
Mengxu Zhang +10 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2012 目的探讨不同病因对男性不育患者精子形态的影响。方法 426例男性不育患者根据病因分为7组:精索静脉曲张组（68例）、慢性前列腺炎组（127例）、精索静脉曲张合并慢性前列腺炎组（36例）、特发性弱精子症组（42例）、少精子症组（115例）、小睾丸症组（21例）及其它组（17例）,用瑞-姬氏染色法进行精子形态分析。以78例供精者精液检查结果作为对照。结果不育患者的形态正常精子百分率明显低于对照组 ...
王玉丰, 吴玲, 陈雪银
doaj
Identification, spatial distribution, and associated factors of urban protected areas in China
Conservation Biology, Volume 38, Issue 6, December 2024.Abstract The increasing proximity between protected areas (PAs) and urban areas, which can lead to urban protected areas (UPAs), is now commonplace. Use of Euclidean distance to measure the distance between PAs and cities has not correctly portrayed the spatial relationship between PAs and cities.
Zuo Zitong, Wang Shuyi, Zhong Le
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基于超宽频电压测量的1100 kV GIL绝缘子闪络电压时频特征试验研究
Gaoya dianqi, 2020 特高压GIL设备是特高压输电工程的重要组成单元,故障精确定位是缩短GIL设备绝缘击穿故障抢修时间,提高特高压输电可靠性的关键。为满足特高压GIL故障精确定位需求,研究特高压GIL设备内部绝缘击穿时所产生暂态电压的波形时频特征是基础。文中利用真型1 100 kV GIL设备构建试验平台,通过模拟盆式绝缘子表面缺陷诱发GIL设备内部绝缘闪络。采用超宽频带的电压测量系统准确测量盆式绝缘子闪络过程中电压突变,通过分析击穿过程暂态电压波形的时域和频域特征,揭示特高压GIL设备盆式绝缘子闪络的电磁波激发机理 ...
丁登伟 +5 more
doaj
On the convergence of inexact Newtwon method(不精确牛顿方法的收敛性)
Zhejiang Daxue xuebao. Lixue ban, 2003 研究了不精确牛顿法的局部收敛性态.在假设非线性算子的半连续二阶Frechet导数满足变形1阶-γ条件的前提下,得到了使该方法收敛和二阶收敛性的结果以及相应的误差估计.除了以较弱的条件代替已有的较强条件外,还得到了收敛域半径的估计.
HUANGZheng-da(黄正达)
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