scholarly journals Plastic ingestion by the Wels catfish (Silurus glanis L.): Detailed chemical analysis and degradation state evaluation

2021 ◽  
Author(s):  
Matej Mičušík ◽  
Angela Kleinová ◽  
Mikuláš Oros ◽  
Peter Šimon ◽  
Tibor Dubaj ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Silurus Glanis ◽  
State Evaluation ◽  
Degradation State ◽  
Detailed Chemical

scholarly journals Physical parameters for the EXPORT sample. Rotational velocities and effective temperatures

2004 ◽  
Vol 202 ◽  
pp. 127-129
Author(s):  
E. Solano ◽  
B. Montesinos ◽  
A. Mora ◽  
Keyword(s):  
Chemical Analysis ◽  
Physical Parameters ◽  
Planetary Formation ◽  
La Palma ◽  
Effective Temperatures ◽  
Detailed Chemical

The methods used to calculate projected rotational velocities and effective temperatures for the targets observed during the 1998-1999 La Palma International Time campaign are described here. This is part of a project whose main goal is to perform a detailed chemical analysis of these objects and to study their potential implications in the planetary formation phenomenon.

The award of medals by the President, Sir George Porter, at the Anniversary Meeting, 30 November 1987

1988 ◽  
Vol 417 (1852) ◽  
pp. 1-5
Keyword(s):  
Carbon Dioxide ◽  
Electron Transfer ◽  
Chemical Analysis ◽  
Water Oxidation ◽  
Carbon Dioxide Reduction ◽  
Electron Transfer Pathway ◽  
Starting Point ◽  
Main Pathway ◽  
Isolated Chloroplasts ◽  
Detailed Chemical

The Copley Medal is awarded to Dr R. Hill, F. R. S., in recognition of his pioneering contributions to the understanding of the nature and mechanism of the main pathway of electron transport in photosynthesis. Almost fifty years ago Hill made the first important discovery that allowed detailed chemical analysis of the pathways of photosynthesis, when he demon­strated the light-driven oxidation of water by isolated chloroplasts, and this made it possible to study water oxidation separately from carbon-dioxide reduction. This was the starting point in the elucidation of the electron-transfer pathway in photosynthesis, and in 1951 Hill, with R. Scarisbrick, uncovered the first com­ponent in the chain when they discovered cytochrome and established its key properties. Subsequently, with H. E. Davenport, Hill discovered the second com­ponent of the chain, shown later by others to be ferredoxin. With F. Bendall he formulated the ‘Z-scheme’ to describe the mechanism of electron transfer in photosynthesis in chloroplasts, which showed the relation between the photochemically driven elements and conventional electron-transfer chains found in other biological systems. This proposal brought great clarity to the field and set the scene for further detailed elucidation of the mechanisms.

ARP 2 AND TERZAN 8: A DETAILED CHEMICAL ANALYSIS

2008 ◽  
Vol 136 (2) ◽  
pp. 614-620 ◽  
Author(s):  
Marta Mottini ◽  
George Wallerstein ◽  
Andrew McWilliam
Keyword(s):  
Chemical Analysis ◽  
Detailed Chemical

scholarly journals Identification of a Plant Phytosterol with Toxicity against Arthropod Pests

1999 ◽  
Vol 4 (2) ◽  
pp. 13 ◽  
Author(s):  
J.R.M. Thacker
Keyword(s):  
Chemical Analysis ◽  
Plant Species ◽  
Spider Mites ◽  
Spectroscopic Techniques ◽  
Pest Species ◽  
Active Chemical ◽  
Crude Plant Extract ◽  
Arthropod Pests ◽  
Detailed Chemical ◽  
Number Of Plant Species

A crude plant extract that was toxic to spider mites in a leaf dip bioassay was subjected to detailed chemical analysis using chromatographic and spectroscopic techniques, The analyses revealed that the major active chemical was probably fl-sitosterol-3-glucostdc, a known phytosterol. The literature indicates that this chemical has been identified in a number of plant species and that it has been tested for utility in a number of medical therapies. It has not so far been assayed for the control of arthropod posts, the data indicate that this compound may be of use in the control of pest species, especially spider mites.

XANES at the Cl K-edge as a relevant technique to reveal the iron archaeological artefact dechlorination treatments

2020 ◽  
Vol 35 (10) ◽  
pp. 2358-2368
Author(s):  
Solenn Reguer ◽  
Florian Kergourlay ◽  
Eddy Foy ◽  
Delphine Neff ◽  
Delphine Vantelon ◽  
...  
Keyword(s):  
Conservation Strategies ◽  
State Evaluation ◽  
Archaeological Artefact ◽  
Archaeological Objects ◽  
Degradation State

Degradation state evaluation, corrosion diagnosis methods' reliability, and also the development and improvement of conservation strategies are dramatically important to preserve iron archaeological objects.

Diurnal variation in the composition of duodenal digesta

1997 ◽  
Vol 1997 ◽  
pp. 207-207
Author(s):  
S.J. Lister ◽  
R. Sanderson ◽  
A. Sargeant
Keyword(s):  
Chemical Composition ◽  
Chemical Analysis ◽  
Infrared Spectra ◽  
Chemical Structure ◽  
Near Infrared ◽  
Diurnal Changes ◽  
Difference Spectra ◽  
Near Infrared Spectra ◽  
Source Of Information ◽  
Detailed Chemical

The size of biological samples is often, by necessity, small and precludes a full and detailed chemical analysis of the material. Near infrared spectra are comprehensive records of the chemical structure and content of a substrate and are thus a rich source of information. To investigate diurnal changes in the chemical composition of duodenal digesta, NIR spectra and difference spectra were used to examine samples collected over a 24h period.

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