Results 101 to 110 of about 253,535 (258)

Spectrophotometric Study of Cobalt, Nickel, Copper, Zinc and Lead Complexes with Methylthymol Blue in Binary Water-Methanol Mixtures [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 1997
The complexation reactions between methylthymol blue (MTB) and Co2+, Ni2+, Cu2+, Zn2+ and Pb2+ ions have been studied in different water-methanol mixtures at pH 4.45 and 25 °C by a spectrophotometric technique.
Raoof Ghavami, Hamid Abdollahi, Mohammad Saleem Khan   +2 more
doaj  

On the use of ultraviolet photography and ultraviolet wing patterns in butterfly morphology and taxonomy [PDF]

, 2000
In a series of feeding experiments we found that, depending on the larval food plant species or part of food plant ingested, individuals of the blue butterfly Polyommatus icarus (Lycaenidae) exhibit broad variation of wing patterns in the ultraviolet (UV)
Fiedler, Konrad, Knüttel, Helge
core  

MVP Inhibits Influenza A Virus‐Induced Ferroptosis by Targeting IRF1 and Increasing FSP1 Activity

Advanced Science, EarlyView.
During IAV infection, MVP inhibits IRF1 polyubiquitination, thereby relieving IRF1‐mediated transcriptional inhibition of FSP1. Consequently, this leads to an upregulation of FSP1 expression, thereby reinforcing the inhibition of ferroptosis. In addition, the MVP can promote myristoylation and ubiquitination of FSP1, enabling its membrane localization ...
Yingbo Chen, Paili Lin, Yongfang Xia, Zhiqiang Liu, Zilu Cheng, Qingmei Zhu, Shiqi Wan, Xiaoyu Chen, Haiyan Bao, Renbo Qiao, Gechang Zhong, Ying Zhu, Shi Liu   +12 more
wiley   +1 more source

Use of optical fibers in spectrophotometry [PDF]

The use of single or small numbers of fiber optic fibers in astronomical spectroscopy with the goal of greater spectrophotometric and radial velocity accuracy is discussed.
Ramsey, Lawrence W.
core   +1 more source

Tailored Porous Bimetallic Nanozyme Platform for Full‐Cycle Therapeutics of Intestinal Ischemia/Reperfusion

Advanced Science, EarlyView.
ABSTRACT Intestinal ischemia/reperfusion (I/R) injury presents a biphasic pathology: an acute oxidative‐inflammatory phase leading to organ failure, and a recovery phase marked by mucosal dysfunction and bacterial translocation. The developed MPB@TA‐Cu‐Ma nanocomposite functions as a dual‐phase therapeutic platform with significant efficacy. It rapidly
Chenghao Qiu, Wenjing Xian, Mengxue Wang, Guozhi Zhao, Yanhuo Zhang, Zhiyu Zhou, Bo Sheng, Zhuo Zhen, Xie Liu, Shouwen Diao, Mengwei Tu, Chen Qiu, Huixian Wang, Jianbo Zhang, Peng Zhu, Tong Li   +15 more
wiley   +1 more source

Infrared photometry and spectrophotometry of Titan [PDF]

The wide variation in infrared brightness temperature of Titan is explained in terms of a greenhouse effect. Radiometric observations in the infrared and microwave frequencies indicate an alternate hot atmospheric model. Methane, ammonia, hydrogen atoms,
Morrison, D.
core   +1 more source

Determining the Physical Properties of the B Stars I. Methodology and First Results

, 1999
We describe a new approach to fitting the UV-to-optical spectra of B stars to model atmospheres and present initial results. Using a sample of lightly reddened stars, we demonstrate that the Kurucz model atmospheres can produce excellent fits to either ...
Azusienis A., Buser R., Castelli F., Cuhna K., Derck Massa, Edward L. Fitzpatrick, Finley D. S., Gummersbach C. A., Hauck B., Hill G. M., Kudritzki R. P., Malagnini M. L., Massa D., Massa D., Mermilliod J. C., Napiwotzki R., Remie H., Rolleston W. R. J., Simonneau E., Swings J. P., Underhill A. B., Varenne O.   +21 more
core   +2 more sources

Inhibiting cGAS‐STING to Preserve Mitochondrial–Nuclear Communication and Stemness in Young Tendon Stem Cells: A Hydrogel Strategy against Age‐Related Tendinopathy

Advanced Science, EarlyView.
A dual‐targeting strategy to rejuvenate aged tendons. A reactive oxygen species (ROS)‐responsive hydrogel co‐delivers a selenium nanozyme (scavenges ROS) and a STING inhibitor to tendon stem cells. This combined action restores mitochondria–nucleus communication, alleviates cellular senescence, and rejuvenates tendon regeneration, offering a novel ...
Zhuo Zhang, Weiyong Song, Heng Yin, Yi Wang, Yi Zou, Yuling Li, Yue Luo, Chao Xiang, Xiaoqin Liu, Yan Xiong, Yong Wang, Ke Jiang   +11 more
wiley   +1 more source

Simultaneous spectrophotometric determination of phenolic antioxidant (BHA and BHT) concentrations in pharmaceutical preparations and chewing gums using the H-point standard addition method

Macedonian Journal of Chemistry and Chemical Engineering, 2017
A simple, rapid, and sensitive spectrophotometric method was developed for the simultaneous determination of butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) concentration in pharmaceutical preparations and chewing gums, without prior ...
Mahmure Özgür, Zeynep Kalaycioğlu, Öznur Dülger   +2 more
doaj   +1 more source

Novel Vascular‐Adaptive Liquid Metal Microspheres Enable Visualized Arterial Embolization Therapy

Advanced Science, EarlyView.
We present drug‐loaded liquid metal microspheres (X‐MEN) as a novel agent for image‐guided arterial embolization. With inherent radiopacity and superior deformability, X‐MEN enables real‐time monitoring and conforms tightly to irregular vessels. This approach ensures precise, long‐lasting embolization without recanalization, addressing critical ...
Chenyu Shen, Junge Chen, Gang Zhang, Zhusheng Liu, Yichen Wan, Lei Lei, Weiyan Ren, Yanyu Zhao, Bozhang Xia, Zhiqiang Yi, Jinjin Wang, Jingwang Gao, Gen Mu, Xing‐Jie Liang, Zhijun Wang   +14 more
wiley   +1 more source