Results 51 to 60 of about 30,768 (254)
Rare Metals, EarlyView.ABSTRACT Two‐dimensional (2D) nonlayered niobium nitrides have attracted considerable interest for electrochemical energy storage. However, the synthesis of these materials is hampered by their nonlayered crystal structures, which are characterized by strong three‐dimensional chemical bonding.
Rui Huo +7 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2004 【目的】为了探讨tau基因多态性与帕金森病的关系。【方法】本实验用PCR-片段长度多态性分析法检测了123例中国散发性帕金森病病人和114个正常对照的微管相关蛋白(tau)基因A0等位基因多态性。【结果】我们发现tau基因A0等位基因和A0/A0基因型在帕金森病组的出现率略高于对照组,分别为77.6%:74.1%和61%:57%,但无统计学意义。【结论】A0多态性与我国散发性帕金森病发病无关。
陶恩祥
doaj
Rare Metals, EarlyView.ABSTRACT Against the backdrop of global clean energy transition and surging demand for lithium resources, lithium extraction from salt lakes presents unprecedented development opportunities. Nanofiltration (NF) membrane technology, recognized for its efficiency, energy savings, and environmental benefits, demonstrates significant application potential ...
Wen‐Feng Li +5 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2007 目的研究纤维蛋白原（Fg）Bβ基因多个位点的多态性与血浆水平及冠心病的关系。方法运用聚合酶链反应-限制性片段长度多态性分析技术及核苷酸序列测定鉴定FgBβ基因中7个可能与血栓相关的多态性位点:-β148C/T-、249 C/T3、45 C/T、-455G/A-、854 G/A、1689T/G及Bc1 I G/A;比浊法测定血浆纤维蛋白原水平。结果与正常对照组相比,冠心病组血浆Fg显著升高 ...
吴方 +6 more
doaj
Studies on Biology of Early Developmental Stages of Babylonia [PDF]
, 2016 东风螺(Babylonia)隶属软体动物门(Mollusca)、腹足纲(Gastropoda)、新腹足目(Neogastropoda)、东风螺科(Babyloniidae)，分布于中国东海、南海以及东南亚、日本和印度洋沿岸，因肉质鲜美、市场接受度高，而且生长速度快、养殖产量大，被认为是本世纪最具开发前景的优质海产腹足类之一。方斑东风螺和泥东风螺是我国常见的东风螺种类，对于其早期发育阶段的形态学以及多种组学进行研究，不仅在理论研究上具有科学意义，而且在生产实践上也具有重要的指导意义 ...
沈铭辉
core +1 more source
Rare Metals, EarlyView.ABSTRACT High‐power piezoelectric ceramics which have a wide operating temperature range are essential for sensor and actuator applications in extreme conditions. However, their development is fundamentally hindered by the inherent trade‐off among key parameters (TC, d33, Qm).
Rui Yan +10 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2009 目的探讨胆固醇7α-羟化酶（cholesterol 7α-hydroxylase,CYP7A1）基因多态性与阿尔茨海默病（AD）的关系。方法用PCR-RFLP方法分析7α-羟化酶A-204C多态性。结果A-204C多态性基因型频率、等位基因A、C频率在组间比较差异无显著性（P>0.05）,但基因型为CC的AD患者,其TC和LDL-C水平显著高于基因型为AC的AD患者（P0.05）,但患者组CC基因型与TC、LDL-C水平密切相关 ...
赵朝贤 +8 more
doaj
拟行PCI术冠心病患者CYP2C19、ApoE基因多态性分布研究
Zhongguo shiyan zhenduanxue, 2021 目的研究拟行PCI术(percutaneous transluminal coronary intervention,经皮冠状动脉介入治疗)冠心病患者的CYP2C19、ApoE基因多态性的分布特点,并探讨基因多态性与血小板聚集率水平、血脂水平的关系。方法收集2019年1月至2019年5月于川北医学院附属医院心内科就诊的拟行PCI术的初诊冠心病患者,用PCR-微阵列芯片法检测CYP2C19基因多态性、实时荧光PCR法检测ApoE基因多态性、血小板聚集实验(比浊法)(ADP诱导)检测血小板聚集率 ...
喻晓倩 +5 more
doaj
Genetic diversity of Noctiluca scintillans [PDF]
, 2016 夜光藻是一种常见的赤潮藻，在世界大部分近海海域均有分布。目前普遍认为夜光藻只有一个种，但还没有研究探索不同地理种群的夜光藻是否产生了种内变异。本研究通过单细胞PCR以及单细胞克隆文库的方法，比较了中国黄海、东海、南海，墨西哥湾以及阿拉伯海5个海域夜光藻核糖体基因的遗传多样性。主要研究结果如下： 1、发现22种ITS单倍型(n=103)，12种28S单倍型(n=25)，6种18S单倍型(n=31)；这3个基因的单倍型多样度(Hd)分别为0.824、0.670、0.557，核苷酸多样度(π)分别为0 ...
潘永柏
core
Wildlife Letters, EarlyView.Asiatic black bears in Russia face conservation threats such as habitat destruction and fragmentation, which exacerbate food shortages caused by crop failures. This study explores an innovative approach to rehabilitating bears that abandon hibernation in mid‐winter due to extreme exhaustion by providing supplemental food near their den sites.
Sergey A. Kolchin +2 more
wiley +1 more source