Results 31 to 40 of about 1,168,675 (150)
, 2017 甲烷水合物（CH4·nH2O）是主要由甲烷和水分子构成的冰状笼型化合物，在自然界储量巨大．固体核磁共振（NMR）波谱和激光拉曼光谱是在分子水平分析甲烷水合物的重要手段．该文利用低温固体核磁共振碳谱（13CNMR）对合成的甲烷水合物结构进行了研究，分别使用13C交叉极化（13CCP）和高功率质子去偶（1HHPDEC）2种脉冲程序采集甲烷水合物的13CNMR谱图，结合实验结果分析及理论推导可知，使用1HHPDEC方法得到的13CNMR谱图信号更强，更利于定量分析；甲烷气体与冰粉合成的甲烷水合物为I型 ...
付娟, 吴能友, 邬黛黛, 苏秋成
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Germanium is a critical dispersed metal, yet sustainable recovery from dilute solutions is limited by sorbents that are difficult to regenerate and operate in continuous mode. Here, we fabricate a regenerable 3D‐printed hydrogel monolith (3D‐ATO‐GS) by integrating hydroxyl‐rich amorphous TiO2 nanoparticles into an alginate/gelatin scaffold ...
Wenhuan Guo +6 more
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Zhongguo shiyan zhenduanxue, 2008 目的方法利用液体芯片-飞行质谱技术进行血清中胶质瘤疾病相关蛋白质的筛选。结果将78例胶质瘤患者和68例正常对照者血清样本各随机分为模型建立组和模型验证组;应用液体芯片-飞行质谱技术测定模型建立组样本,进行了差异蛋白的筛选和诊断模型的建立;然后用模型验证组样本进行了差异蛋白和模型的验证;并对其中的蛋白质进行鉴定。经模型建立组胶质瘤患者与正常对照者的血清蛋白质图谱比较,得到差异蛋白17个并建立了诊断模型,建模蛋白质为1460（m/z）、1612（m/z）、1776（m/z）、1862（m/z）、1941（m/
王雅杰 +9 more
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Gaoya dianqi, 2021 针对电力谐波加窗分析中的频谱泄漏和栅栏效应,利用电力信号在频域中的频谱只集中出现在谐波频点处的特点,以窗谱在主瓣中央和谐波频点的平坦性作为约束条件研究可同时有效抑制频谱泄漏和栅栏效应的加窗函数。提出了进行电力谐波分析时组合余弦窗须满足的基本条件。导出了窗谱的各阶导数,利用导数等于0作为主瓣中央和谐波频点的平坦性表示建立了组合余弦窗的参数方程组。对窗宽为整数个额定周期的新型窗函数的频谱进行了数值模拟,结果表明,新型窗函数在抑制频谱泄漏和抵抗栅栏效应方面性能优异,无需借助谱线插值即可实现高精度电力谐波分析。
陈砚圃, 杨蕾, 张介秋
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Near‐infrared (NIR) phosphors with broadband and efficient emission are pivotal for the performance of NIR phosphor‐converted light emitting diodes (pc‐LEDs). In this study, the double perovskite phosphor La2MgTiO6:Cr3+ phosphor with broadband emission in the range of 650–950 nm was prepared.
Xu Qian +7 more
wiley +1 more source
Atomically Thin Sn:GaN‐GaN Homojunction for High‐Sensitivity β‐Ray Detection
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Gallium nitride (GaN), a third‐generation wide‐bandgap semiconductor renowned for its superior radiation tolerance, holds promise for advanced β‐ray detection. Herein, a scalable liquid metal‐assisted in situ synthesis method is presented to fabricate Sn‐doped GaN homojunctions via gallium oxide printing followed by ammonolysis, enabling ...
Weiqing Liu +8 more
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Wildlife Letters, Volume 4, Issue 2, Page 73-82, June 2026.Eimeria saudiensis represents a genus of apicomplexan parasites capable of inducing coccidiosis in Arabian oryx. Our research concentrated on the morphological and molecular investigation of Eimeria spp. in the captive oryx herd in Oman. The therapeutic and management practices employed at the Mammals Breeding Center were reassessed to diminish ...
Khalid Al‐Habsi +7 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2008 【目的】 建立适于人表皮组织的双向电泳技术,并应用质谱技术对人表皮组织蛋白质组进行初步分析?【方法】 利用组织匀浆法制备人表皮组织总蛋白?固相pH 梯度胶条进行双向电泳?PDQuest 7.4软件比较和分析电泳图谱,利用质谱技术鉴定部分蛋白斑点?【结果】 成功建立了适用于人表皮组织蛋白质组分析的双向电泳技术,获得和比较了人表皮组织双向电泳四种染色图谱?人表皮组织的蛋白质在pH5～8范围内分布均匀,分子量集中在15～100 ku之间?银染图谱获得的蛋白斑点数为586±14 ...
聂燕芳 +4 more
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Methods in Ecology and Evolution, Volume 17, Issue 6, Page 1896-1909, June 2026.Abstract Molecular identification of insect food webs can accurately reveal complex trophic interactions and serve as a foundation for understanding ecosystem functioning and advancing biodiversity conservation. This process typically involves DNA library construction, high‐throughput sequencing and subsequent steps, including data assembly, annotation,
Xiao‐man Zhang +9 more
wiley +1 more source
The establishment and evaluation of latent inhibition model in SD and Wistar rats
, 2007 目的 建立潜伏抑制的实验动物模型.方法 分别以SD和Wistar大鼠为实验对象,利用大鼠穿梭程序自动控制仪,观察了声音刺激的前呈现对随后的声音刺激-电击条件化联合学习的影响.结果 与对照组动物相比,声音刺激的前呈现均能显著地降低SD和Wistar大鼠的条件化联合反应,即建立了潜伏抑制动物模型,进一步的分析表明,两个种系的动物在行为表现、条件化学习过程等方面存在一定的差异.在90次条件化训练中,无声音前呈现和有声音前呈现的2组Wistar大鼠的条件化反应次数[分别为(29.1±5.2)次,
王玮文, 邵枫, 刘美
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