Plant elemental composition and element ratio in some crops at the flowering stage

1991 ◽  
Vol 22 (15-16) ◽  
pp. 1591-1595 ◽  
Author(s):  
S. Labuda
Keyword(s):  
Elemental Composition ◽  
Element Ratio ◽  
Flowering Stage

scholarly journals MICROPROBE ANALYSIS OF PROTARGOL STAIN DEPOSITION IN TWO PROTOZOA

1970 ◽  
Vol 18 (8) ◽  
pp. 559-564 ◽  
Author(s):  
IAN S. ZAGON ◽  
JIRI VAVRA ◽  
IAN STEELE
Keyword(s):  
Elemental Composition ◽  
Electron Microprobe ◽  
Mass Concentration ◽  
Concentration Ratio ◽  
Microprobe Analysis ◽  
Element Ratio ◽  
Significant Difference ◽  
Protozoan Species

Protargol-stained specimens of two protozoans, Carchesium polypinum (Ciliata, Peritrichida) and Gregarina rhyparobiae (Sporozoa, Eugregarinida), were examined by an electron microprobe analyzer in order to determine the elemental composition of the stain deposit. Limited penetration of the microprobe beam presumably revealed only the composition of the stain deposits close to the surface of the examined protozoa. The data on this first analysis of Protargol staining revealed that element detection was negligible in the unstained preparations, but the stained specimens of both protozoans revealed a mass concentration ratio of 0.4 Cu:1 Ag:6.1 Au. There was no significant difference in the element ratio between the two protozoan species belonging to different classes and stained with slightly different stain procedures. Some aspects of Protargol mechanisms are discussed along with an interpretation of data and an indication of the feasibility of further examinations.

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

Effect of Bio and Organic Fertilizers on Pumpkin's (Cucurbita pepo L.) Leave Content of N, P, and K

2020 ◽  
Vol 10 (1) ◽  
pp. 241-245
Author(s):  
Ammar Hameed Madi ◽  
Jawad A. Kamal Al-Shibani
Keyword(s):  
Cucurbita Pepo ◽  
Sandy Loam ◽  
Block Design ◽  
Organic Fertilizers ◽  
Flowering Stage ◽  
College Of Agriculture ◽  
Significant Difference ◽  
Randomized Complete Block Design ◽  
Loam Soil ◽  
Four Levels

This study was conducted to investigate the effect of bacterial bio-fertilization A. chroococcum and P. putide and four levels of compost (0, 1, 2, 3) tons.h-1 on the leaves content of N.P.K elements. The experiment was carried out in one of the greenhouses of the College of Agriculture - University of Al-Qadisiyah during fall season 2018-2019. It designed in accordance with the Randomized Complete Block Design (RCBD) with three replicates in sandy loam soil. The means of treatments were compared with the least significant difference (LSD) at (5)% probability level. The results present that the treatments of A. chroococcum, P. putide and compost at (3) tons.kg-1 significantly increases the leaves content of K.P.K compared to all other treatments in the flowering stage (4.970, 0.5000, and 4.930) mg.kg-1, respectively. This treatment was followed by the effect of the treatment of A. chroococcum and compost at (3) tons.kg-1, which increases the values of all traits except the leaf content of (P). Bio-fertilizer with P. putide + A. chroococcum significantly increases the leaves' content of P.

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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