scholarly journals Digital Image Transformations and Image Stacking of Latent Prints Processed Using Multiple Physical and Chemical Techniques

2015 ◽  
Author(s):  
Danielle Tague
Keyword(s):  
Digital Image ◽  
Latent Prints ◽  
Chemical Techniques ◽  
Physical And Chemical ◽  
Image Transformations

THE ELUCIDATION OF THE STRUCTURES OF OCHOTENSINE AND OCHOTENSIMINE

1966 ◽  
Vol 44 (21) ◽  
pp. 2449-2454 ◽  
Author(s):  
Stewart McLean ◽  
Mei-Sie Lin ◽  
Richard H. F. Manske
Keyword(s):  
Chemical Techniques ◽  
Physical And Chemical

A combination of physical and chemical techniques has led unequivocally to the demonstration that ochotensimine and ochotensine have structures I and II, respectively.

scholarly journals ANALYSIS OF GEOMETRIC CHARACTERISTICS OF TWO-PHASE POLYMER-SOLVENT SYSTEMS DURING THE SEPARATION OF SOLUTIONS ACCORDING TO THE INTENSITY OF THE IMAGE OF MICROGRAPHS

2019 ◽  
Vol 16 (32) ◽  
pp. 551-559
Author(s):  
Nikolay A. BULYCHEV ◽  
Valeriy V. BODRYSHEV ◽  
Lev N. RABINSKIY
Keyword(s):  
Image Processing ◽  
Digital Image Processing ◽  
Digital Image ◽  
Droplet Surface ◽  
Droplet Growth ◽  
Two Phase ◽  
Image Intensity ◽  
Composition And Structure ◽  
Physical And Chemical ◽  
Instrumental Methods

This paper discusses the study of the shapes and sizes of polymer droplets formed during the phase separation of their solutions with increasing temperature, as well as the parameters of the transitional layers of polymer condensing on the droplet surface formed during this process. For the study, a copolymer of polyethylene oxide and polypropylene oxide was chosen, whose behavior in aqueous solutions and the change in hydrophilic-hydrophobic balance depends on temperature. It has been established that the application of the method of digital image processing allows the introduction of the quantitative criterion – image intensity of a photo. For a more detailed study of the behavior of polymer molecules at the phase boundary, depending on the temperature, the studies of the temperature-dependent behavior of a number of polymers of different composition and structure have been carried out. The use of the digital image processing method for polymer droplets makes it possible to determine the parameters of droplets and their transition layers, to determine the dynamics of nucleation and droplet growth and density changes in the transition layer by the image intensity parameter. The paper has found out that embryos of pluronic are unevenly distributed by volume of solution with the presence of zones with a maximum number of molecules and a zone with a minimum of assembly of molecules. The practical value of the work is in the fact that the results of the study can be used to assess the dynamics of the separation of polymer solutions without involving the time-consuming and expensive instrumental methods of physical and chemical analysis.

scholarly journals Aflatoxin B1 in the Iranian pistachio nut and decontamination methods: A systematic review

2020 ◽  
Vol 12 (4) ◽  
pp. 15-25 ◽  
Author(s):  
Mohsen Mokhtarian ◽  
Hamid Tavakolipour ◽  
Foroud Bagheri ◽  
Carlos Augusto Fernandes Oliveira ◽  
Carlos Humberto Corassin ◽  
...  
Keyword(s):  
Systematic Review ◽  
Aflatoxin B1 ◽  
Meta Analysis ◽  
Acceptable Level ◽  
National Standard ◽  
Human Consumption ◽  
Pistachio Nut ◽  
Chemical Techniques ◽  
National Databases ◽  
Physical And Chemical

This study aimed to summarize the occurrence of aflatoxin B1 (AFB1) in the various cultivars of the Persian pistachio nut and the decontamination techniques, with the aid of a systematic review and meta-analysis. In this regard, all published studies up to November 2019 among international and national databases were screened, resulting in 23 articles. According to the findings, the main aflatoxin identified in the pistachio nut was AFB1, with AFB1 concentrations in ~28% of the studies being ? 5 µg/kg, in ~35% of the studies being ? 10 µg/kg, and in ~37% of the studies being ? 10 µg/kg. Generally, in most studies (~72%), AFB1 content in pistachio cultivars was higher than the acceptable level proposed by the Iranian National Standard. Although several physical and chemical techniques for AFB1 reduction have been introduced, most of them are not safe and/or suitable for human consumption.

scholarly journals The African herbal plants research and development amid COVID-19

2020 ◽  
Author(s):  
Force Tefo Thema
Keyword(s):  
Research And Development ◽  
Plant Extract ◽  
Natural Compounds ◽  
The Past ◽  
Biological Compatibility ◽  
Herbal Plants ◽  
Chemical Techniques ◽  
Time Frames ◽  
Physical And Chemical ◽  
Synthesis Of Nanomaterials

In the past eight years our research was primarily focused on green nano chemistry, biomimicry, nanomaterials and bio-conjugation/natural compounds. We were specifically using bottom to up approach techniques because it was untoxic. The fabrication and synthesis of nanomaterials via the green path (plant extract, bacteria, fungus) was an ideal strategy as much emphasis was on the biological compatibility and environment friendliness of the nanoparticles. Secondly, more attention was on time frames and financial considerations of other physical and chemical techniques that were expensive and toxic to employ.

Physical and Chemical Techniques for Discharge Studies - Part 1

1996 ◽  
Keyword(s):  
North America ◽  
Western Australia ◽  
Saline Lakes ◽  
Groundwater Discharge ◽  
South Australia ◽  
Dryland Salinity ◽  
Saline Groundwater ◽  
Murray River ◽  
Chemical Techniques ◽  
Physical And Chemical

Groundwater discharge is associated with salinity and pollution problems. The widespread presence of millions of saline lakes in North America, Africa and Australia, shows that across the geological record, most salinity and desertification problems have been caused by saline groundwater discharge. In recent times, dryland salinity has spread widely in southern Australia, resulting in the loss of more than 50% of the fresh streams in Western Australia and causing major salinity problems in the Murray River in South Australia.

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