Results 21 to 30 of about 680,756 (161)

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  

Efficient Double Perovskite Cs2NaGdCl6: Sb3+/Pr3+ for Plant‐Cultivation Lighting, Advanced Optical Anti‐Counterfeiting, and WLED Applications

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Developing multifunctional luminescent materials with tunable spectra is crucial for plant lighting and information–security applications. To address the critical requirement of plant photosynthesis for blue and red spectral components, a novel lead‐free double perovskite Cs2NaGdCl6: Sb3+, Pr3+ phosphor was designed and synthesized via a ...
Huangyao Chen   +7 more
wiley   +1 more source

新型含氮大环多元醚二酯和四酯的红外光谱

open access: yes四川大学学报. 自然科学版, 1989
报道了一类新型含氮大环多元醚二酯及四酯化合物的红外光谱研究.对它们的红外光谱谱带进行了归属和讨论.
谢蕙, 秦圣英
doaj  

Overreliance on Orthographic Similarity in L2‐Japanese Conceptual Processing by L1‐Chinese Learners

open access: yesInternational Journal of Applied Linguistics, Volume 36, Issue 2, Page 1807-1820, May 2026.
ABSTRACT Orthographic and phonological similarities between first (L1) and second (L2) languages can facilitate L2 processing. Particularly, L1‐Chinese learners of L2‐Japanese can benefit from the shared morphosyllabic Chinese characters (Japanese kanji/Chinese hanzi) because of their similar orthographies.
Xuehan Zhao, Kexin Xiong, Sachiko Kiyama
wiley   +1 more source

Biomass‐Engineered Defect‐Rich g‐C3N4 Anchors Pd2+‐Rich Ultrafine Particles for Highly Efficient Formic Acid Dehydrogenation

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Formic acid (FA) is considered to be a safe and convenient hydrogen source; however, achieving controlled and efficient FA dehydrogenation under mild conditions using stable solid catalysts remains a significant challenge. Pd‐based catalysts have been extensively studied due to their superior catalytic activity to other metal catalysts.
Shuai Wei   +10 more
wiley   +1 more source

红外光谱法测定芥酸酰胺含量的研究

open access: yes四川大学学报. 自然科学版, 1997
红外光谱法测定芥酸酰胺含量的研究@陈民助@吴玉蓉@匡晓帆@艾克蕙红外光谱法测定芥酸酰胺含量的研究陈民助吴玉蓉匡晓帆艾克蕙(化学系)芥酸酰胺是一种重要的化工产品,具有多种用途.我国生产的该种产品质量上乘,可与美国生产的同种产品相媲美.美国采用红外光谱法定量,...
陈民助   +3 more
doaj  

Bimetallic Mo/Fe‐Doped CoP2 Nanoleaf Array as a Bifunctional Electrocatalyst for Overall Water Splitting

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT The development of efficient and stable bifunctional catalysts remains a key challenge for green hydrogen production via electrochemical water splitting. In this study, a bimetallic Mo/Fe‐doped CoP2 nanoleaf array anchored on carbon cloth (Mo, Fe‐CoP2@CC) was synthesized from zeolitic imidazolate framework‐L (ZIF‐L) via an ion‐exchange and low‐
Xiangqun Zeng   +6 more
wiley   +1 more source

Broad‐Spectral Response Lead Halide Perovskite Solar Cells Through Integration of Multifunctional Organic Bulk‐Heterojunction and Quantum‐Cutting Downconversion Materials

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Expanding near‐infrared (NIR) spectral response and utilizing ultraviolet (UV) photons are effective strategies for enhancing the power conversion efficiency (PCE) of lead halide perovskite solar cells (PSCs). However, the range of NIR spectral response extension and the utilization of UV light for devices are not enough, and the loss of ...
Li He   +9 more
wiley   +1 more source

基于近红外光谱的小麦粉湿面筋含量检测

open access: yes四川大学学报. 自然科学版, 2015
本文应用近红外光谱法测定小麦粉中湿面筋含量.对小麦粉的近红外光谱图进行消除常数偏移量、多元散射校正、减去一条直线三种预处理方法,用偏最小二乘法建立小麦粉的近红外光谱图与湿面筋含量之间的关系模型,并预测小麦粉中湿面筋含量.实验结果显示减去一条直线预处理后的模型评价指标最优,模型的相关系数R2为93.4,模型交互验证后的均方差为0.51,预测结果的均方根误差为0.456.实验结果表明,近红外光谱法能够用于小麦粉湿面筋含量的测定.
胡玉君   +3 more
doaj  

Optimizing CuO on 3D Ordered Macroporous CeO2 for CO Oxidation in Rich Hydrogen

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT CO preferential oxidation (CO‐PROX) in rich H2 is considered a feasible strategy to solve CO poisoning for fuel cells, but obtaining good activity at low temperatures is still a challenge. Herein, three‐dimensional ordered macroporous (3DOM) CuO/CeO2 catalysts were fabricated by a templating approach, with the metal–support interaction (MSI ...
Xiaohua Chen   +7 more
wiley   +1 more source

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