Results 41 to 50 of about 367,222 (166)

Enhanced Dual‐Modality CT Imaging for Evaluating Hematogenous Metastasis During Photothermal Therapy

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
Dual‐modality computed tomography (CT) nanoprobes, BPP, are developed for real‐time microscopic monitoring of microvessel morphology and vascular permeability to provide predictive insights into cancer progression and metastasis. ABSTRACT Dynamic assessment of hematogenous metastasis is crucial for the tumor during photothermal therapy.
Yanhong Sun   +7 more
wiley   +1 more source

异质结构材料的傅立叶变换光萤光谱的测试与分析

open access: yesGuangtongxin yanjiu, 1996
介绍了傅立叶交换光萤光谱测试的基本原理;报道了用PL6120设备测得的一些典型的异质结构材料光萤光谱;分析和讨论了光萤光双峰结构、光萤光谱异常温度特性等问题;指出了异质界面上原子排列无序和内应力是造成这些异常现象的物理原因。
丁国庆
doaj  

Multi‐Site Chelation Enabled by 3D‐Printed TiO2 Hydrogel Monoliths for Dynamic Ge(IV) Recovery in Fixed Beds

open access: yesRare 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
wiley   +1 more source

ATR FTIR技术在赛加羚羊角鉴别中的应用分析

open access: yes野生动物学报, 2019
利用衰减全反射红外光谱技术,对赛加羚羊等3个物种共49份相关样本进行检测、分析并计算其相关系数,结果:同支羚羊角壳不同取样部位红外光谱相关系数为96.69%—99.43%;不同羚羊角壳相同取样部位红外光谱相关系数为94.24%—99.43%;不同物种角质壳红外光谱相关系数为99.28%—99.47%;羚羊角壳与其骨质芯混合物红外光谱随角骨比例变化,骨质成分越多,其红外光谱与羚羊角壳红外光谱的相关系数越低。由此推断红外光谱因取样部位、个体及物种不同而产生差异,且个体间和取样部位差异甚至大于种间差异 ...
刘闯李超金煜
doaj  

Full‐Spectrum Solar Light–Activated Chemiresistive Sensors Based on W18O49/Ag2S S‐Scheme Heterostructure for Highly Sensitive Room‐Temperature NO2 Detection

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Light‐activated gas sensors hold significant potential in environmental monitoring and smart Internet of Things (IoT) owing to their advantage in room temperature operation. Nevertheless, due to a narrow light absorption range, high photocarrier recombination rate, and weak redox activity of the sensing material, the performance enhancement of
Jinyong Hu   +5 more
wiley   +1 more source

一种透射式光栅光谱仪

open access: yes, 2014
本实用新型涉及一种透射式光栅光谱仪,可以将光分成光谱进行记录和输出。光谱仪包括入射狭缝,准直透镜,光栅,聚焦透镜,反射镜,光电转换装置。光谱仪准直透镜和聚焦透镜的使用采用共光轴光路方式,在较短波长范围内,色差和像差影响小,光谱分辨率高,通光效率高,杂散光少,调节方便,结构稳定。适用于固定激发波长的拉曼光谱测试 ...
 黄保坤   +3 more
core  

以Hg光源为标准谱对可见至近红外区域光谱定标的研究

open access: yes四川大学学报. 自然科学版, 1998
以Hg光谱为标准,采用光学多道分析器光栅多色仪的多点定标方法,对可见至近红外区域(0.4~1.1μm)范围的光谱进行了波长标量,并对Ne,H2及激光二极管光谱进行了实际测量,其中对Ne用四点标定的误差不大于0.38nm.
靳丽红   +3 more
doaj  

Synergistic Dual‐Defect Engineering in Amorphous‐Nanocrystalline Heterostructures for Accelerated Oxygen Evolution

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Defect engineering has been widely demonstrated as an effective strategy for enhancing the activity of OER metal catalysts, among which the introduction of twin boundaries (TBs) has proven particularly efficient. However, single‐type defects offer limited performance enhancement.
Wentao Cai   +11 more
wiley   +1 more source

一种编码孔径光谱成像仪的光谱图像复原方法

open access: yes, 2013
本发明涉及一种编码孔径光谱成像仪的光谱图像复原方法,包括以下步骤:步骤1]组装编码孔径光谱成像仪:步骤2]给数字微镜器件DMD进行二维编码:步骤3]调整单色仪:步骤4]对编码孔径光谱成像仪进行定标,并将定标结果进行记录:步骤5]采集二维编码背景图像:步骤6]采集编码图像:步骤7]对步骤6]得到的二维编码目标图像做处理:步骤8]光谱图像复原:本发明解决了现有的光谱成像仪都存在的时间扫描或空间扫描问题,应用本本发明方法具有一定的普遍适用性,可以用于编码孔径光谱成像仪中的许多编码模板的光谱复原 ...
李然   +5 more
core  

Separation of Sanggenon C from SANG-BAI-PI(从桑白皮中提取药物成分桑根酮C)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2001
开发了从中药桑白皮中分离和精制桑根酮C的工艺路线.用紫外光谱、红外光谱、质谱以及核磁共振谱(13C-NMR与1H-NMR)进行结构鉴定,证实其为桑根酮C(Sanggenon C).
LUXiang-hong(陆向红)   +3 more
doaj   +1 more source

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