Modern analytical techniques for bio-active substances

1972 ◽  
Vol 9 (1) ◽  
pp. 6
Author(s):  
F. L. Mitchell ◽  
A. R. Thomson ◽  
J. R. Mansfield ◽  
D. M. Heinekey ◽  
J. P. Leppard ◽  
...  
Keyword(s):  
Analytical Techniques ◽  
Modern Analytical ◽  
Active Substances

scholarly journals Studies on sedimentation of asphaltene deposits in distillation residues

2007 ◽  
Vol 1 (3) ◽  
pp. 165-173
Author(s):  
Aneta Lorek ◽  
◽  
Maciej Paczuski ◽  
Keyword(s):  
Analytical Techniques ◽  
Experimental Methods ◽  
Dispersion Stability ◽  
Surface Active ◽  
Distillation Residues ◽  
Modern Analytical ◽  
Active Substances

In this work, experimental methods used for the evaluation of stability of solids in liquids dispersions, are presented. For the characterization of dispersion components, modern analytical techniques, such as tensiometry, scanning and static turbidimetry, have been applied. The influence of selected surface active substances on the dispersion stability was demonstrated.

scholarly journals Rethinking SME default prediction: a systematic literature review and future perspectives

2021 ◽  
Author(s):  
Francesco Ciampi ◽  
Alessandro Giannozzi ◽  
Giacomo Marzi ◽  
Edward I. Altman
Keyword(s):  
Literature Review ◽  
Systematic Literature Review ◽  
Global Financial Crisis ◽  
Analytical Techniques ◽  
Future Research ◽  
Finance Management ◽  
Default Prediction ◽  
Emerging Issues ◽  
Medium Enterprise ◽  
Modern Analytical

AbstractOver the last dozen years, the topic of small and medium enterprise (SME) default prediction has developed into a relevant research domain that has grown for important reasons exponentially across multiple disciplines, including finance, management, accounting, and statistics. Motivated by the enormous toll on SMEs caused by the 2007–2009 global financial crisis as well as the recent COVID-19 crisis and the consequent need to develop new SME default predictors, this paper provides a systematic literature review, based on a statistical, bibliometric analysis, of over 100 peer-reviewed articles published on SME default prediction modelling over a 34-year period, 1986 to 2019. We identified, analysed and reviewed five streams of research and suggest a set of future research avenues to help scholars and practitioners address the new challenges and emerging issues in a changing economic environment. The research agenda proposes some new innovative approaches to capture and exploit new data sources using modern analytical techniques, like artificial intelligence, machine learning, and macro-data inputs, with the aim of providing enhanced predictive results.

Absorption of L-alanine and other dissolved nutrients by the spines of Paracentrotus lividus (Echinoidea)

1977 ◽  
Vol 57 (4) ◽  
pp. 1031-1045 ◽  
Author(s):  
M. E. de Burgh ◽  
A. B. West ◽  
F. Jeal
Keyword(s):  
Amino Acids ◽  
Organic Molecules ◽  
Marine Invertebrates ◽  
Analytical Techniques ◽  
Paracentrotus Lividus ◽  
Direct Absorption ◽  
Dissolved Nutrients ◽  
Recent Developments ◽  
Modern Analytical

The possibility that marine invertebrates might obtain part of their nutritional requirements by direct absorption of dissolved molecules through the epidermis has recently received considerable attention. This revival of interest in a field which had been virtually abandoned since the early part of the century was led by the findings of Stephens & Schinske (1957, 1958, 1961). Modern analytical techniques have revealed that the amount of dissolved nutrients in coastal waters is much greater than was formerly realized; total amino acids have been recorded in concentrations of up to 10-4 mole/litre in south-east Alaskan waters (Schell, 1974) and 7 x 10-5 mole/litre off Helgoland (Bohling, 1970). Direct absorption of amino acids has been conclusively established in several phyla (see reviews by Stephens, 1968,1972), and one of the major aims of current research is to show that dissolved organic molecules taken up from available concentrations could be of nutritional significance. Recent developments concerning the possible roles of uptake in marine ecosystems have been reviewed by West, de Burgh & Jeal (1977).

Molecular Characterization of Diesel Fuels Using Modern Analytical Techniques

2020 ◽  
pp. 61-76
Author(s):  
C. S. Hsu ◽  
G. J. Dechert ◽  
D. J. Abbott ◽  
M. W. Genowitz ◽  
R. Barbour
Keyword(s):  
Molecular Characterization ◽  
Analytical Techniques ◽  
Diesel Fuels ◽  
Modern Analytical

Science of Art and Analysis: A Mixture for Undergraduate Non-Specialists

1992 ◽  
Vol 267 ◽  
Author(s):  
W. Stanley Taft ◽  
James W. Mayer
Keyword(s):  
Physical Properties ◽  
Computer Science ◽  
Undergraduate Students ◽  
Analytical Methods ◽  
Art History ◽  
Analytical Techniques ◽  
Cornell University ◽  
The Third ◽  
Works Of Art ◽  
Modern Analytical

ABSTRACTAt Cornell University we are in the third year of teaching an interdisciplinary, undergraduate course on the physical properties and structures of works of Art, and the modern analytical methods used to investigate them: Art, Isotopes, and Analysis. The challenge is to explain concepts familiar to museum scientists and conservators to a group of 150 undergraduate students with a background that ranges from Art History to Computer Science. Painting techniques (Fresco, Tempera, Oil, etc.) are demonstrated to the class. The analytical techniques involve the interactions of electrons, photons, ions and neutrons with pigments and other materials. This instructional approach serves as an introduction to published analyses of works of art.

INVESTIGATIONS ON IN VITRO METABOLITES OF LINEZOLID IN VARIOUS SPECIES

INDIAN DRUGS ◽  
2019 ◽  
Vol 56 (05) ◽  
pp. 39-49
Author(s):  
S. L Kesana ◽  
◽  
H. B. Vamaraju ◽  
J. P. Dodle ◽  
P. C. Sastry
Keyword(s):  
Bacterial Infections ◽  
Liver Microsomes ◽  
Parent Drug ◽  
Analytical Techniques ◽  
Bacterial Protein ◽  
Acid Metabolite ◽  
Bacterial Protein Synthesis ◽  
Morpholine Ring ◽  
Modern Analytical

Linezolid is a potent synthetic oxazolidinone used for the treatment of bacterial infections with a new mechanism of action that involves early inhibition of bacterial protein synthesis. In humans, linezolid circulates mainly as parent drug and is excreted primarily as parent drug and a major inactive, morpholine ring-opened carboxylic acid metabolite. In vitro studies were conducted to identify the hepatic enzymes responsible for the oxidative metabolism of linezolid using human liver microsomes. However the specific enzyme responsible for the oxidation of linezolid was not identified. The present study is to check with and identify the probable metabolic pathways in various species like monkey, mouse, rat, dog and human livermicrosomes and put up the best model for the contingency studies using modern analytical techniques. The current investigation on the metabolites obtained after 60 minutes incubation revealed three additional metabolites, namely, M10, M11 and M12, adding on to the list of already reported metabolites.>

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