نتایج جستجو برای: mgo nanoclusters

تعداد نتایج: 10368  

Journal: :Journal of agricultural and food chemistry 2010
Gema Arribas-Lorenzo Francisco J Morales

Thermal processing of food leads to the formation of dicarbonyls such as glyoxal (GO) and methylglyoxal (MGO), which are potentially harmful because they are precursors of advanced glycation end products (AGEs). GO and MGO formation was examined during the baking process of cookies as cookies are a widely distributed food commodity in Western diets. GO and MGO were chromatographically analyzed ...

2001
H. M. J. R. H. Ross

The promoting effect of niobium in a Li/MgO catalyst for the oxidative coupling of methane (OCM) and for the oxidattve dehydrogenation of ethane (ODHE) has been studied in some detail. it has been found that a Li/Nb/MgO catalyst with 16 wt % niobium showed the highest activity for the C, production in the OCM reaction; the activity at 600 “C was ten times that of the Li/MgO catalyst at the same...

2010
Carla Figueira Bento Filipa Marques Rosa Fernandes Paulo Pereira

BACKGROUND Increased production and accumulation of methylglyoxal (MGO), as well as increased modification of proteins by glycoxidation, are hallmarks of aging and diabetes. MGO was shown to modify proteins and to contribute to the accumulation of damaged proteins that can be toxic to cells. However, the effect of MGO on the cell systems responsible for repairing or degrading damaged proteins i...

Journal: :Physical chemistry chemical physics : PCCP 2015
Zhi-Feng Shi Yuan-Tao Zhang Xi-Jun Cui Shi-Wei Zhuang Bin Wu Xian-Wei Chu Xin Dong Bao-Lin Zhang Guo-Tong Du

Vertically aligned ZnO/MgO coaxial nanowire (NW) arrays were prepared on sapphire substrates by metal-organic chemical vapor deposition combined with a sputtering system. We present a comparative investigation of the morphological and optical properties of the produced heterostructures with different MgO layer thicknesses. Photoluminescence measurements showed that the optical performances of Z...

Journal: :Physical chemistry chemical physics : PCCP 2014
Kiwoong Kim Jeong Woo Han Kwang Soon Lee Won Bo Lee

Developing next-generation solid sorbents to improve the economy of pre- and post-combustion carbon capture processes has been challenging for many researchers. Magnesium oxide (MgO) is a promising sorbent because of its moderate sorption-desorption temperature and low heat of sorption. However, its low sorption capacity and thermal instability need to be improved. Various metal-promoted MgO so...

Journal: :Chemphyschem : a European journal of chemical physics and physical chemistry 2010
Isabel Díez Hua Jiang Robin H A Ras

Silver nanoclusters composed of only a few metal atoms present appealing properties such as fluorescence. We have previously reported on aqueous solutions of this fluorophore using poly(methacrylic acid) as scaffold and their sensing properties. Here we report on the preparation of organic solutions of fluorescent silver nanoclusters by quantitative transfer from aqueous solution to an immiscib...

Journal: :Scientific reports 2016
Matthew J Broadhead Mathew H Horrocks Fei Zhu Leila Muresan Ruth Benavides-Piccione Javier DeFelipe David Fricker Maksym V Kopanitsa Rory R Duncan David Klenerman Noboru H Komiyama Steven F Lee Seth G N Grant

The molecular features of synapses in the hippocampus underpin current models of learning and cognition. Although synapse ultra-structural diversity has been described in the canonical hippocampal circuitry, our knowledge of sub-synaptic organisation of synaptic molecules remains largely unknown. To address this, mice were engineered to express Post Synaptic Density 95 protein (PSD95) fused to ...

Journal: :The journal of physical chemistry. B 2005
Ichizo Yagi Satoru Idojiri Tadashi Awatani Kohei Uosaki

In situ optical second harmonic generation (SHG) technique was employed to investigate the shape and density of Cu nanoclusters, which were electrochemically formed on p-GaAs(001) electrode surfaces. Since GaAs is not a centrosymmetric medium, a significant portion of SHG signal arises from the bulk dipole susceptibility, but it was possible to separate a surface-induced signal from a bulk-indu...

Journal: :Physical chemistry chemical physics : PCCP 2017
Rosalba Juarez-Mosqueda Sami Malola Hannu Häkkinen

In this work, we used density functional theory (DFT) and linear response time-dependent DFT (LR-TDDFT) to investigate the stability, electronic structure, and optical properties of Au-doped [Ag29-xAux(BDT)12(TPP)4]3- nanoclusters (BDT: 1,3-benzenedithiol; TPP triphenylphosphine) with x = 0-5. The aim of this work is to shed light on the most favorable doped structures by comparing our results ...

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