Results 31 to 40 of about 18,949 (162)
Zhongguo shiyan zhenduanxue, 2019 随着口腔修复技术的发展,目前金属烤瓷冠修复体有多种选择,其修复效果以色泽自然、形态逼真及功能良好,而受到广大患者的亲睐。在修复治疗中,修复体的美观在视觉上是直观的,但修复体的长期效果,需要考察其对口腔环境的适应及对牙周组织的长期影响,这也是修复效果最重要的部分[1]。笔者选择了3种金属材料对比格犬进行金属烤瓷冠修复,通过观察其修复6个月后对犬类基牙牙周组织的影响,分析比较其修复的长期效果 ...
王连有, 李慧, 侯力键, 高鸽
doaj
Theory And Practice Research on Marine Ecological Rehabilitative Justice---A Case Study of Marine Oil Spill Ecological Damage [PDF]
, 2015 随着经济的持续快速发展以及人类需求的不断膨胀，人类从自然界获取资源、能源的领域已经从陆地延伸到了海洋，由此给海洋生态带来的损害也是不容忽视的。新工业发展使石油成为国家战略安全的重要标志，远洋石油运输和海上石油钻井平台蓬勃兴起，所造成的海洋石油污染更是触目惊心，这不仅给国家和个人造成重大经济损失，而且还会给海洋生态环境和自然资源带来极大的危害。我国关于海洋生态损害追偿和救济的法律性规定只有《海洋环境保护法》第90条第2款。该款虽然规定海洋环境监管部门可以提起针对破坏海洋生态的索赔诉讼 ...
刘豆豆
core
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Developing efficient catalytic thermal desorption systems is of great significance in the field of sustainable soil remediation. Herein, novel Mn–Ce solid solution modified Co3O4 nanocrystals were successfully prepared for the removal of perfluorooctanoic acid (PFOA) in soil.
Yu‐Hao Liu +8 more
wiley +1 more source
Gaoya dianqi, 2012 采用硅氧烷修复液修复交联聚乙烯电缆老化试样中的水树,进而分析修复效果及机理。将介质损耗因数为4%～6%,绝缘电阻7 500～10 000 MΩ的短电缆在7.5 kV 450 Hz交流电压下老化至介质损耗因数达到20%左右,绝缘电阻3 500～5 000 MΩ。然后用压力注入式修复装置把修复液注入缆芯对水树缺陷进行修复。以介质损耗因数、绝缘电阻和击穿电压为指标对修复效果进行评判;通过显微镜切片观察修复前后水树微观形态;通过仿真修复前后水树附近电场分布来分析和验证水树的修复机理。实验结果证明 ...
牟秋谷 +4 more
doaj
Dolphins whistle contour automatic extraction and recovery [PDF]
, 2015 海豚是一种高智商的水生哺乳动物，它们使用自己独特的“语言”——哨声来进行互相交流。要想理解海豚的语言，就必须要对海豚哨声进行分析研究。当前对海豚哨声的分析研究大多是基于哨声语谱图进行的，但语谱图中哨声轮廓与背景噪声混合在一起，不仅导致目前对哨声的分割、提取等预处理都是用人工方式进行，同时也给后续的实验造增加了难度。如果对语谱图中的哨声轮廓进行去噪、特征提取和修复等自动化预处理，就能实时进行海豚哨声与背景噪声的分离，获得一个完整的海豚哨声轮廓。这不仅节约了人工提取花费的时间，也有利于海豚哨声的个体识别 ...
吴道曦
core
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT With increasing complex requirement in organic pollution environment, the development of actual electromagnetic wave (EMW) absorbers with high EMW absorption performance and self‐cleaning pollution function is becoming a significant challenge.
Shou‐Hang Lv +8 more
wiley +1 more source
S221T/D225Y mutations of Escherichia coli RecA can transfer RecA from cytoplasm to nucleus in HeLa cells [PDF]
, 2016 RecA/Rad51家族蛋白在进化上是非常古老而又保守的蛋白家族。大肠杆菌RecA基因在同源重组、DNA修复、SOS途径、突变和细胞分裂中起重要作用。人Rad51基因是大肠杆菌RecA基因的直向同源基因，两者起源于同一个祖先基因。人Rad51基因主要参与DNA的修复和重组，并且与肿瘤发生关系密切。原核细胞与真核细胞最大的区别在于原核细胞没有以核模为界限的细胞核，而蛋白质的入核转运机制是一个十分复杂的生物学过程，需要核孔复合体（NPC）、核定位信号(NLS)、核转运受体、RanGTP蛋白等共同参与 ...
孙旭利
core
International Journal of Urban and Regional Research, Volume 50, Issue 1, Page 191-220, January 2026.Abstract Henry George advocated for capturing land value increases for public ends. The active approach of public authorities organizing and financing land development can help capture higher land value increases, as Hartman and Spit indicate. However, this approach hardly happens in developing countries, where the coalition of private developers and ...
Nannan Xu
wiley +1 more source
The Clinical Signifcance of Expression of ERCC1 and PKCalpha in Non-small Cell Lung Cancer [PDF]
, 2010 Background and objective Excision repair cross-complementing 1 (Excision-Repair Cross-Complementing 1, ERCC1), an important member of the DNA repair gene family, plays a key role in nucleotide excision repair and apoptosis of tumor cells.
Guangming LI +6 more
core +1 more source
Integrative Conservation, Volume 4, Issue 4, Page 569-583, December 2025.Accurate species identification is critical for conserving endangered Firmiana trees in China. However, morphological similarities among closely related Firmiana species complicate its taxonomic identification. We conducted genome skimming on 62 samples representing all 10 Chinese species and discovered nrITS as the optimal DNA barcode, achieving 100 ...
Li‐Jun Yan +8 more
wiley +1 more source