Detoxification of High-concentration PCB Contaminated Electrical Equipment using a Microwave-assisted Catalytic Reaction

Author(s):  
Kouji Amano ◽  
Satoru Kanamori ◽  
Mikio Simojou ◽  
Koichi Itoh ◽  
Noboru Hashimoto
2019 ◽  
Vol 6 (7) ◽  
pp. 1735-1743 ◽  
Author(s):  
Jing Shi ◽  
Huixiang Wang ◽  
Yequn Liu ◽  
Xiaobo Ren ◽  
Haizhen Sun ◽  
...  

CeO2 octahedra are prepared rapidly and they exhibit improved catalytic activity due to high concentration of oxygen vacancies and exposed (111) facets.


Author(s):  
David Johane Machate ◽  
Elaine S. de Pádua Melo ◽  
Daniela G. Arakaki ◽  
Rita de Cássia Avellaneda Guimarães ◽  
Priscila Aiko Hiane ◽  
...  

This study aimed to quantify the extent of heavy metal, non-metal and metalloid levels in the Campomanesia adamantium pulp obtained from an area crossed by road experiencing high large vehicle traffic and intensive agriculture modern farming, to monitor the health risks associated with pulp consumption by humans. For this purpose, in three spots located within this area, ripe fruits were collected on the roadside, bush and farm-margin. Pulp samples were digested by microwave-assisted equipment, and chemical elements were quantified by ICP OES. The concentrations of K, Pb, Se, Fe, Mo, Zn, Co, Ni and Mn in the pulp collected in roadside/bush points showed statistical differences (p < 0.05). The heavy metals and metalloid concentrations that exceeded FAO/WHO standards were ordered Pb > As > Mo > Co > Ni > Mn > Cr. Therefore, among these metalloid and heavy metals, As, Pb and Cr were found to be higher in farm-margin > roadside > bush (1.5 × 10−3, 1.1 × 10−3 and 6.2 × 10−4), respectively. Therefore, As is the most important metalloid with higher levels in farm-margin, roadside and bush (1.5 × 10−3, 1.0 × 10−3 and 6.0 × 10−4 > 10−6–10−4 and 3.33, 2.30 and 1.34 > 1), respectively, to total cancer risk and hazard quotient, if 10 g daily of pulp are consumed.


2014 ◽  
Vol 16 (3) ◽  
pp. 1417-1425 ◽  
Author(s):  
José González-Rivera ◽  
Ignacio R. Galindo-Esquivel ◽  
Massimo Onor ◽  
Emilia Bramanti ◽  
Iginio Longo ◽  
...  

Author(s):  
David Johane Machate ◽  
Elaine S. Pádua Melo ◽  
Daniela G. Arakaki ◽  
Rita de Cássia Avellaneda Guimarães ◽  
Priscila Aiko Hiane ◽  
...  

This study aimed to quantify the extent of heavy metal, non-metal and metalloid level of Campomanesia adamantium pulp obtained from area crossed by road of the high large vehicle traffic and intensive agriculture modern farm, and for monitoring the health risks associated with pulp human consumption. For this purpose, three spots located between this area, ripe fruits were collected in roadside, bush and margin-farm. Pulp samples were digested by microwave-assisted equipment, and mineral elements were quantified by ICP OES. The mineral elements average demonstrated no statistical difference observed between this pulp (p &gt; 0.05). The heavy metals and metalloid concentrations that exceeded FAO/WHO standards are ordered Pb &gt; As &gt; Mo &gt; Co &gt; Ni &gt; Mn &gt; Cr. Therefore, among these metalloid and heavy metals, As, Pb and Cr were found higher in farm-margin &gt; roadside &gt; bush (1.5 &times; 10-3, 1.1 &times; 10-3 and 6.2 &times; 10-4) respectively. Therefore, As is the most important metalloid with higher levels in farm-margin, roadside and bush (1.5 &times; 10-3, 1.1 &times; 10-3 and 6.2 &times; 10-4 &gt; 10-6&ndash;10-4 and 3.33, 2.30 and 1.34 &gt; 1) respectively, to total cancer risk and hazard quotient, if 100 g daily of pulp are consumed.


2010 ◽  
Vol 10 (5) ◽  
pp. 3534-3537 ◽  
Author(s):  
Jeong-Seok Chae ◽  
Minchul Chung ◽  
Ho-Geun Ahn ◽  
Sang-Chul Jung

Author(s):  
Daniel C. Pease

A previous study demonstrated that tissue could be successfully infiltrated with 50% glutaraldehyde, and then subsequently polymerized with urea to create an embedment which retained cytomembrane lipids in sectioned material. As a result, the 180-190 Å periodicity characteristic of fresh, mammalian myelin was preserved in sections, as was a brilliant birefringence, and the capacity to bind OsO4 vapor in the hydrophobic bilayers. An associated (unpublished) study, carried out in co-operation with Drs. C.K. Akers and D.F. Parsons, demonstrated that the high concentration of glutaraldehyde (and urea) did not significantly alter the X-ray diffraction pattern of aldehyde-fixed, myelin. Thus, by itself, 50% glutaraldehyde has little effect upon cytomembrane systems and can be used with confidence for the first stages of dehydration.


Author(s):  
Glenn M. Cohen ◽  
Radharaman Ray

Retinal,cell aggregates develop in culture in a pattern similar to the in ovo retina, forming neurites first and then synapses. In the present study, we continuously exposed chick retinal cell aggregates to a high concentration (1 mM) of carbamylcholine (carbachol), an acetylcholine (ACh) analog that resists hydrolysis by acetylcholinesterase (AChE). This situation is similar to organophosphorus anticholinesterase poisoning in which the ACh level is elevated at synaptic junctions due to inhibition of AChE, Our objective was to determine whether continuous carbachol exposure either damaged cholino- ceptive neurites, cell bodies, and synaptic elements of the aggregates or influenced (hastened or retarded) their development.The retinal tissue was isolated aseptically from 11 day embryonic White Leghorn chicks and then enzymatically (trypsin) and mechanically (trituration) dissociated into single cells. After washing the cells by repeated suspension and low (about 200 x G) centrifugation twice, aggregate cell cultures (about l0 cells/culture) were initiated in 1.5 ml medium (BME, GIBCO) in 35 mm sterile culture dishes and maintained as experimental (containing 10-3 M carbachol) and control specimens.


Author(s):  
James Cronshaw

Long distance transport in plants takes place in phloem tissue which has characteristic cells, the sieve elements. At maturity these cells have sieve areas in their end walls with specialized perforations. They are associated with companion cells, parenchyma cells, and in some species, with transfer cells. The protoplast of the functioning sieve element contains a high concentration of sugar, and consequently a high hydrostatic pressure, which makes it extremely difficult to fix mature sieve elements for electron microscopical observation without the formation of surge artifacts. Despite many structural studies which have attempted to prevent surge artifacts, several features of mature sieve elements, such as the distribution of P-protein and the nature of the contents of the sieve area pores, remain controversial.


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