scholarly journals Electrical response of organic molecule supported preformed and in-situ formed antimony sulfide nanoparticles under frequency condition

2021 ◽  
Author(s):  
Sarit Kumar Ghosh ◽  
Venkata Perla ◽  
Kaushik Mallick
Keyword(s):  
Organic Molecule ◽  
Size Range ◽  
Electrical Response ◽  
Frequency Condition ◽  
Antimony Sulfide

A complexation route mediated synthesis of orthorhombic antimony sulfide nanoparticles is described in this report where uniformly distributed particles within the size range of 2-12 nm are stabilized within the...

In situ gas-solid reaction for fabrication of copper antimony sulfide thin film as photovoltaic absorber

2017 ◽  
Vol 209 ◽  
pp. 23-26 ◽  
Author(s):  
Yu Zhang ◽  
Jianhua Tian ◽  
Kejian Jiang ◽  
Jinhua Huang ◽  
Huijia Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Solid Reaction ◽  
Antimony Sulfide ◽  
Gas Solid Reaction

Oil-Soluble Silver–Organic Molecule for in Situ Deposition of Lubricious Metallic Silver at High Temperatures

2016 ◽  
Vol 8 (21) ◽  
pp. 13637-13645 ◽  
Author(s):  
Michael Desanker ◽  
Blake Johnson ◽  
Afif M. Seyam ◽  
Yip-Wah Chung ◽  
Hassan S. Bazzi ◽  
...  
Keyword(s):  
High Temperatures ◽  
Organic Molecule ◽  
Metallic Silver ◽  
In Situ Deposition

Nanocomposite cellulose fabrics with in situ generated silver nanoparticles by bioreduction method

2020 ◽  
pp. 152808372092473 ◽  
Author(s):  
Suchart Siengchin ◽  
Pawinee Boonyasopon ◽  
Vajja Sadanand ◽  
Anumakonda Varada Rajulu
Keyword(s):  
Silver Nanoparticles ◽  
Size Range ◽  
Low Cost ◽  
Aqueous Dispersion ◽  
X Ray Diffraction ◽  
X Ray ◽  
Gram Positive Bacteria ◽  
Bed Materials ◽  
Cellulose Fabrics

In the present work, nanocomposite cellulose fabrics with in situ generated silver nanoparticles were prepared by bioreduction method employing aqueous dispersion of low-cost natural turmeric powder as a reducing agent and different concentrated aqueous AgNO3 as source solutions. The prepared nanocomposite cellulose fabrics were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, and antibacterial tests. The nanocomposite cellulose fabrics had roughly spherical silver nanoparticles in the size range of 41–130 nm with an overall average of 78 nm. The X-ray analysis indicated the generation of both silver nanoparticles and Ag2O nanoparticles in the nanocomposite cellulose fabrics. The nanocomposite cellulose fabrics retained the generated AgNPs even after repeated detergent washings. The prepared nanocomposite cellulose fabrics exhibited excellent antibacterial activity against both the Gram-negative and Gram-positive bacteria and hence can be considered as antibacterial hospital-bed materials, apparels, etc.

Elasmobranch fishes from the Viséan of East Kirkton, West Lothian, Scotland

1993 ◽  
Vol 84 (3-4) ◽  
pp. 329-330 ◽  
Author(s):  
Roberta L. Paton
Keyword(s):  
Fresh Water ◽  
Oil Shale ◽  
Size Range ◽  
Lower Carboniferous ◽  
To Come ◽  
Elasmobranch Fishes

ABSTRACTThirteen fragments of fossil elasmobranchs can be identified with certainty from East Kirkton. Those collected in situ range from Units 32 to 37. The remains appear to come from two different families of sharks: spines which show features typical of the Lower Carboniferous hybodont Tristychius arcuatus Agassiz; teeth from a xenacanth which fall within the size range of those found in the Lower Carboniferous xenacanth Diplodoselache woodi Dick. Both these genera are found in other Oil-Shale assemblages in the Lothians. These rare shark fossils reinforce the evidence that the East Kirkton Limestone was fresh water in origin.

scholarly journals Protein kinase C sensitizes olfactory adenylate cyclase.

1993 ◽  
Vol 101 (2) ◽  
pp. 183-205 ◽  
Author(s):  
S Frings
Keyword(s):  
Protein Kinase C ◽  
Protein Kinase ◽  
Adenylate Cyclase ◽  
Electrical Response ◽  
Polymyxin B ◽  
Camp Production ◽  
Kinase C ◽  
Mucosal Side ◽  
Olfactory Tissue

Effects of neurotransmitters on cAMP-mediated signal transduction in frog olfactory receptor cells (ORCs) were studied using in situ spike recordings and radioimmunoassays. Carbachol, applied to the mucosal side of olfactory epithelium, amplified the electrical response of ORCs to cAMP-generating odorants, but did not affect unstimulated cells. A similar augmentation of odorant response was observed in the presence of phorbol dibutyrate (PDBu), an activator of protein kinase C (PKC). The electrical response to forskolin, an activator of adenylate cyclase (AC), was also enhanced by PDBu, and it was attenuated by the PKC inhibitor Goe 6983. Forskolin-induced accumulation of cAMP in olfactory tissue was potentiated by carbachol, serotonin, and PDBu to a similar extent. Potentiation was completely suppressed by the PKC inhibitors Goe 6983, staurosporine, and polymyxin B, suggesting that the sensitivity of olfactory AC to stimulation by odorants and forskolin was increased by PKC. Experiments with deciliated olfactory tissue indicated that sensitization of AC was restricted to sensory cilia of ORCs. To study the effects of cell Ca2+ on these mechanisms, the intracellular Ca2+ concentration of olfactory tissue was either increased by ionomycin or decreased by BAPTA/AM. Increasing cell Ca2+ had two effects on cAMP production: (a) the basal cAMP production was enhanced by a mechanism sensitive to inhibitors of calmodulin; and (b) similar to phorbol ester, cell Ca2+ caused sensitization of AC to stimulation by forskolin, an effect sensitive to Goe 6983. Decreasing cell Ca2+ below basal levels rendered AC unresponsive to stimulation by forskolin. These data suggest that a crosstalk mechanism is functional in frog ORCs, linking the sensitivity of AC to the activity of PKC. At increased activity of PKC, olfactory AC becomes more responsive to stimulation by odorants, forskolin, and cell Ca2+. Neurotransmitters appear to use this crosstalk mechanism to regulate olfactory sensitivity.

In Situ Fabrication of Hierarchical MTW Zeolite via Nanoparticle Assembly by a Tailored Simple Organic Molecule

2018 ◽  
Vol 24 (32) ◽  
pp. 8133-8140 ◽  
Author(s):  
Kai Zhang ◽  
Shaojuan Luo ◽  
Zewei Liu ◽  
Chao Li ◽  
Zheng Ke ◽  
...  
Keyword(s):  
Organic Molecule ◽  
Nanoparticle Assembly ◽  
In Situ Fabrication

The Fabrication of Stainless Steel Parts for MEMs

2001 ◽  
Vol 687 ◽  
Author(s):  
Terry J. Garino ◽  
Alfredo Morales ◽  
Thomas Buchheit ◽  
Brad Boyce
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Mechanical Strength ◽  
Silicone Rubber ◽  
Size Range ◽  
Molding Process ◽  
Dimensional Tolerance ◽  
Nano Powder ◽  
Full Densification

AbstractA micro-molding process was used to fabricate parts in the 0.1 to 10 mm size range from a stainless steel nano-powder. The two types of molds used were both produced from parts fabricated using the LIGA process so that they had precise dimensional tolerance and straight sidewalls. Rigid PMMA molds were made by injection molding and flexible silicone rubber molds were made by casting. Mold filling was accomplished by mixing the powder with epoxy to form a putty-like material that was then pressed into the mold cavities and allowed to cure. After pyrolysis of the epoxy, the parts were sintered in forming gas. The densification kinetics were measured in situ using a video system. Full densification was achieved after 1 hour at 1350°. The microstructure of the sintered parts was examined using the SEM. The mechanical strength, hardness, dimensional tolerance and surface roughness of the sintered parts were also measured.

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