Heat Treatment-Based One-Step Preparation of Highly Concentrated, Well-Stable Silver Colloids that Can Form Stable Films on Bare Electrodes for H2O2 Detection

2012 ◽  
Vol 8 (3) ◽  
pp. 335-342 ◽  
Author(s):  
Xuping Sun ◽  
Xiaoyun Qin ◽  
Jianming Hu ◽  
Yonglan Luo ◽  
Wenbo Lu ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Silver Colloids ◽  
H2o2 Detection ◽  
One Step

One-step green hydrothermal synthesis of biocompatible graphene/TiO2 nanocomposites for non-enzymatic H2O2 detection and their cytotoxicity effects on human keratinocyte and lung fibroblast cells

2018 ◽  
Vol 6 (8) ◽  
pp. 1195-1206 ◽  
Author(s):  
Qi Yan Siew ◽  
Shiau Ying Tham ◽  
Hwei-San Loh ◽  
Poi Sim Khiew ◽  
Wee Siong Chiu ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Lung Fibroblast ◽  
Electrochemical Sensing ◽  
Fibroblast Cells ◽  
Human Keratinocyte ◽  
H2o2 Detection ◽  
One Step ◽  
Good Biocompatibility ◽  
Sensing Application ◽  
Cytotoxicity Effects

A simple, safe, and efficient approach to synthesise graphene/titanium dioxide (G/TiO2) nanocomposites with potential in electrochemical sensing application and relatively good biocompatibility to human cells.

One-Step Synthesis and Size Control of Dendrimer-Protected Gold Nanoparticles: A Heat-Treatment-Based Strategy

2003 ◽  
Vol 24 (17) ◽  
pp. 1024-1028 ◽  
Author(s):  
Xuping Sun ◽  
Xiue Jiang ◽  
Shaojun Dong ◽  
Erkang Wang
Keyword(s):  
Heat Treatment ◽  
Gold Nanoparticles ◽  
Size Control ◽  
One Step

A Facile Approach to α-FeOOH Nanorods with High Aspect Ratios

2011 ◽  
Vol 239-242 ◽  
pp. 2327-2330
Author(s):  
Hui Zhang
Keyword(s):  
Heat Treatment ◽  
Acetic Acid ◽  
Cetyltrimethylammonium Bromide ◽  
Iron Nitrate ◽  
Nitrate Hydrate ◽  
Aspect Ratios ◽  
One Step ◽  
Hydrothermal Approach ◽  
Crystal Phase Transformation ◽  
Xrd And Tem

α-FeOOH nanorods were fabricated via a one-step hydrothermal approach using iron nitrate hydrate (Fe(NO3)3·9H2O) as iron source, cetyltrimethylammonium bromide (CTAB) as a template and acetic acid (CH3COOH) solution as solvent. XRD, SEM, TEM, and TGA were applied to characterize the samples. The as-prepared α-FeOOH nanorods are around 50 nm in diameters and 1 µm in length. The aspect ratio is 20. The XRD and TEM results indicated that both CTAB and CH3COOH were crucial for the formation of α-FeOOH nanorods. The heat treatment at the temperature of 250°C led to the transformation of α-FeOOH to α-Fe2O3, and the crystal phase transformation was completed at 340°C. The lower transformation temperature compared to bulk α-FeOOH could be attributed to the decreased size of the as-prepared sample.

scholarly journals Ubiquitin-RAS peptide extensions as substrates for farnesyl-protein transferase and carboxymethyltransferase

1992 ◽  
Vol 285 (1) ◽  
pp. 55-60 ◽  
Author(s):  
Y Yoo ◽  
S Watts ◽  
M Rechsteiner
Keyword(s):  
Heat Treatment ◽  
Binding Assay ◽  
Rabbit Reticulocyte Lysate ◽  
Farnesyl Pyrophosphate ◽  
Xenopus Egg Extract ◽  
Egg Extract ◽  
Farnesyl Protein Transferase ◽  
Reticulocyte Lysate ◽  
One Step ◽  
Xenopus Egg

Using oligonucleotide-mediated ‘loop-in’ mutagenesis strategies in M13, a heat-inducible ubiquitin (Ub) gene was extended by sequences coding for the C-terminal 11 amino acids of Ha-RAS. The resulting gene was transformed into AR13 and production of the Ub-peptide extension was induced by heat treatment. After one-step purification, the fusion protein (Ub-cRAS) was used as a substrate for farnesyl-protein transferase. Ub-cRAS was farnesylated on incubation in Xenopus egg extract or rabbit reticulocyte lysate. In contrast, when serine was substituted for the last cysteine in the RAS extension, transfer of the [3H]farnesyl group from [3H] farnesyl pyrophosphate to the modified Ub-cRAS was not observed. Farnesylation of Ub-cRAS permitted us to develop an easy membrane-binding assay for farnesyl-protein transferase enzyme activity. Using this assay, we partially purified the enzyme from rabbit reticulocyte lysate. We also detected methylation of the farnesylated Ub-cRAS terminus in Xenopus egg extract.

One-step synthesis of Ag nanoparticles-decorated reduced graphene oxide and their application for H2O2 detection

2012 ◽  
Vol 79 ◽  
pp. 46-51 ◽  
Author(s):  
Xiaoyun Qin ◽  
Yonglan Luo ◽  
Wenbo Lu ◽  
Guohui Chang ◽  
Abdullah M. Asiri ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Ag Nanoparticles ◽  
H2o2 Detection ◽  
Reduced Graphene ◽  
One Step

Effect of Heat Treatment on the Creep Properties of Zr-1Nb-0.12O Nuclear Cladding Tubes

2015 ◽  
Vol 1102 ◽  
pp. 3-6
Author(s):  
In Won Kim ◽  
Sun Ig Hong
Keyword(s):  
Heat Treatment ◽  
Grain Size ◽  
Size Control ◽  
Creep Life ◽  
Creep Tests ◽  
Creep Properties ◽  
Instantaneous Strain ◽  
Grain Size Control ◽  
One Step ◽  
The One

Creep properties of one-step and two-step annealed Zr-1Nb-0.12O cladding tubes were studied. Creep tests were carried out at 450~500 °C with the applied stress between 80MPa and 120MPa The creep rates of the two-step annealed Zr-1Nb-0.12O alloy were found to be slower than those of the one-step annealed Zr-1Nb-0.12O alloy. The creep rate decreased with increase of grain size with annealing for Zr-1Nb-0.12O at intermediate temperatures, suggesting the creep resistance can be enhanced by the grain size control. The creep life of two-step annealed Zr-1Nb-0.12O increased over the one-step annealed Zr-1Nb-0.12O by the factor of 18~20 despite the greater initial instantaneous strain.

scholarly journals Effect of Aging Heat Treatment Conditions on the Mechanical Properties and Microstructure of Base and Weld Metal of Alloy 282 Superalloy

2020 ◽  
Vol 58 (8) ◽  
pp. 540-549
Author(s):  
Jinhyeok Bang ◽  
Yongjoon Kang ◽  
Namkyu Kim ◽  
Seong-Moon Seo ◽  
Sanghoon Lee ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Weld Metal ◽  
Base Metal ◽  
Aged Condition ◽  
Creep Life ◽  
Aging Heat Treatment ◽  
Treatment Conditions ◽  
One Step ◽  
The One

The effect of aging heat treatment conditions on the mechanical properties and microstructure of the base and weld metal of Alloy 282 superalloy was investigated. The aging heat treatment conditions employed in this study were as follows: two-steps (1010 °C for 2 hours plus 788 °C for 8 hours) and one-step at 788 °C, 738 °C, and 688 °C for 4 hours. The base metal with the one-step aged condition exhibited lower hardness but longer creep life than that treated with the two-step aged condition. The base metal subjected to the two-step aging exhibited the highest hardness and the shortest creep life, mainly due to the precipitation of Mo-rich M6C-type carbides and coarse <i>γ</i>' (Ni3(Al,Ti)) phase. For the weld metal, regardless of aging heat treatment conditions, creep elongation and life decreased significantly compared to the base metal, due to the coarse effective grain size and inhomogeneous distribution of <i>γ</i>' precipitates.

scholarly journals Controlled Synthesis of Visible Light Active CuxS Photocatalyst: The Effect of Heat Treatment on Their Adsorption Capacity and Photoactivity

Materials ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 3665 ◽  
Author(s):  
Szilvia Fodor ◽  
Lucian Baia ◽  
Klára Hernádi ◽  
Zsolt Pap
Keyword(s):  
Heat Treatment ◽  
Photocatalytic Activity ◽  
Adsorption Capacity ◽  
Ethylenediaminetetraacetic Acid ◽  
Sulfur Source ◽  
Chloride Dihydrate ◽  
Stabilizing Agents ◽  
Investigation Methods ◽  
Visible Light Active ◽  
One Step

The effects of different precursor salts, stabilizing agents, and heat treatment parameters are already known to have an influence on the synthesis of nano-sized semiconductors in heterogenous photocatalysis. In the present work, CuxS materials were prepared by using different precursors (copper (II) chloride dihydrate or copper (II) acetate monohydrate) and shape tailoring/stabilizing agents, such as ethylenediaminetetraacetic acid/polyvinylpyrrolidone, and thiourea as the sulfur source. The polyvinylpyrrolidone (PVP) kinetically controlled the growth rate of the nanoplates, while ethylenediaminetetraacetic acid (EDTA) adjusted the nucleation process through the complexation of copper. A one-step hydrothermal method was used for the synthesis, and the materials were characterized by means of morphological and structural complementary investigation methods. Furthermore, the adsorption capacity and photocatalytic activity were also measured for these materials. It was found that the vacancy sites formed by changing the precursor salt, as confirmed by Raman measurements, affect the photocatalytic activity. The rise of the specific surface area was achieved by heat treatment, and concomitantly, the adsorption capacity of the treated samples was found to increase likewise.

Warm Forming and Paint Bake Response of AW-7xxx Sheet in Various Tempers

2015 ◽  
Vol 651-653 ◽  
pp. 47-52 ◽  
Author(s):  
Manoj Kumar ◽  
Nigel Ross
Keyword(s):  
Heat Treatment ◽  
Dynamic Recovery ◽  
Warm Forming ◽  
Treatment Procedure ◽  
Processing Chain ◽  
Peak Aged ◽  
One Step ◽  
The Stability ◽  
Various Tempers ◽  
Heat Treatment Procedure

In this paper, we have investigated AW-7921 in various tempers - specifically under aged T4P1-and T4P2-tempers, naturally aged T4 and peak-aged T6-tempers - for their warm formability at 230°C and paint baking response through one step and five step paint baking treatments. It was found that warm formability depends on dynamic recovery and dissolution of precipitates. However, the response to paint baking was dependent on the stability of the precipitates against coarsening. Of the tempers investigated the T4-temper exhibited the best combination of formability and paint baking response. This study also indicated that we can achieve much better performance in the warm forming processing chain by optimization of the temper and paint baking heat treatment procedure.

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