scholarly journals Extraction and Elemental Composition of Meconium in Polistes dominulus (Hymenoptera: Vespidae)

2020 ◽  
Vol 103 (2) ◽  
pp. 206
Author(s):  
Nil Bağrıaçık
Keyword(s):  
Elemental Composition ◽  
Polistes Dominulus

scholarly journals Comparison of the nest materials of Polistes Gallicus (L.), Polistes dominulus (Christ) and Polistes nimpha (Christ) (Hymenoptera: Vespidae)

2012 ◽  
Vol 64 (3) ◽  
pp. 1079-1084 ◽  
Author(s):  
Nil Bagriaçik
Keyword(s):  
Elemental Composition ◽  
Nitrogen Concentration ◽  
Average Thickness ◽  
Polistes Dominulus ◽  
Ecological Conditions ◽  
Nitrogen Concentrations ◽  
Nest Materials ◽  
Physical Features

The aim of this study was to determine and compare the nest materials and some physical features and elemental composition of the nests of Polistes gallicus (L.), Polistes dominulus (Christ) and Polistes nimpha (Christ) collected in similar ecological conditions. The nest architectures of the three species were similar. In the P. gallicus nest, the average thickness of the fibers was 5.73 ?m, the nitrogen concentration was 26.14%, and percentages of the fibers and saliva were 77% and 23%, respectively. In the P. dominulus nest, the average thickness of the fibers was 8.7 ?m, and the nitrogen concentration was 27.42%; the percentages of fiber and saliva were 78% and 22%, respectively. In the P. nimpha nest, the average thickness of the fibers was 9.04 ?m, the nitrogen concentration was 25.82%, and the percentages of the fiber and saliva were 42% and 58%, respectively. There were differences in the amount of saliva and nitrogen concentrations.

Alterations of ultrastructure and elemental composition in cultured human epidermal keratinocytes after treatment with nitrofurazone and silver sulfadiazine

1987 ◽  
Vol 45 ◽  
pp. 676-677
Author(s):  
A. R. Crooker ◽  
M. C. Myers ◽  
T. L. Beard ◽  
E. S. Graham
Keyword(s):  
Electron Microscopy ◽  
Elemental Composition ◽  
Pyrolytic Carbon ◽  
Human Keratinocytes ◽  
Silver Sulfadiazine ◽  
Epidermal Keratinocytes ◽  
Human Epidermal Keratinocytes ◽  
Culture Systems ◽  
Cytotoxicity Endpoints

Cell culture systems have become increasingly popular as a means of screening toxic agents and studying toxic mechanisms of drugs and other chemicals at the cellular and subcellular levels. These in vitro tests can be conducted rapidly in a broad range of relevant mammalian culture systems; a variety of biological and biochemical cytotoxicity endpoints can be examined. The following study utilized human keratinocytes to evaluate the relative cytotoxicities of nitrofurazone (NF) and silver sulfadiazine (SS), the active ingredients of FURACIN(R) Topical Cream and SILVADENE(R) Cream, respectively. These compounds are anti-infectives used in the treatment of burn patients. Cell ultrastructure and elemental composition were utilized as cytotoxicity endpoints.Normal Human Epidermal Keratinocytes (HK) were prepared from the EpiPackTM culture system (Clonetics Corporation, Boulder, CO). For scanning electron microscopy (SEM) and transmission electron microscopy (TEM), cells were seeded on sterile 35 mm Falcon plastic dishes; for elemental microanalysis, cells were plated on polished pyrolytic carbon discs (E. Fullam, Latham, NY) placed in the culture dishes.

Electron probe x-ray microanalysis and electron microscopy of amino acid absorption and transport by the small intestine: inhibition by chemical poisons and correlation to the elemental composition of the epithelial cells

1986 ◽  
Vol 44 ◽  
pp. 134-135
Author(s):  
A. J. Tousimis
Keyword(s):  
Small Intestine ◽  
Amino Acid ◽  
Epithelial Cells ◽  
Elemental Composition ◽  
Isotope Labeling ◽  
Structural Components ◽  
X Ray ◽  
Human Small Intestine ◽  
Transport Studies

The elemental composition of amino acids is similar to that of the major structural components of the epithelial cells of the small intestine and other tissues. Therefore, their subcellular localization and concentration measurements are not possible by x-ray microanalysis. Radioactive isotope labeling: I131-tyrosine, Se75-methionine and S35-methionine have been successfully employed in numerous absorption and transport studies. The latter two have been utilized both in vitro and vivo, with similar results in the hamster and human small intestine. Non-radioactive Selenomethionine, since its absorption/transport behavior is assumed to be the same as that of Se75- methionine and S75-methionine could serve as a compound tracer for this amino acid.

34. Size-Selective Elemental Composition Of Welding Fumes In Area Samples

2004 ◽  
Author(s):  
J. Schnackenbeck ◽  
S. Erdal ◽  
T. Schoonover ◽  
L. Conroy
Keyword(s):  
Elemental Composition ◽  
Welding Fumes

Elemental composition of compact human bone correlated with the osteocyte network

2016 ◽  
Author(s):  
Andreas Roschger ◽  
Paul Roschger ◽  
Felix Repp ◽  
Wolfgang Wagermaier ◽  
Richard Weinkamer ◽  
...  
Keyword(s):  
Elemental Composition ◽  
Human Bone

Characterization of Microstructure and Phase Elemental Composition of 15 wt.% Cr – 2 wt.% Mo Cast Iron with Boron Addition

2020 ◽  
Vol 57 (10) ◽  
pp. 714-742
Author(s):  
V. G. Efremenko ◽  
K. M. Wu ◽  
K. Shimizu ◽  
I. Petryshynets ◽  
B. V. Efremenko ◽  
...  
Keyword(s):  
Cast Iron ◽  
Elemental Composition ◽  
Boron Addition

Characteristics of Colloids in Landfill Leachate

1992 ◽  
Vol 26 (9-11) ◽  
pp. 2575-2578
Author(s):  
V. Gounaris ◽  
P. R. Anderson ◽  
T. M. Holsen
Keyword(s):  
Elemental Composition ◽  
Landfill Leachate ◽  
Stabilization Mechanism ◽  
Size Fractions ◽  
Colloidal Material

Colloidal material in landfill leachate were separated and fractionated in size fractions. Analyses were performed to obtain the mass, elemental composition, and pollutants associated with the colloids in each fractions. The stabilization mechanism of the colloids is studied to evaluate their mobility potential.

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