scholarly journals Mechanochemically Synthesised Dicyanamide Hybrid Organic-Inorganic Perovskites and their Melt-Quenched Glasses

2022 ◽  
Author(s):  
Lauren N. McHugh ◽  
Michael F. Thorne ◽  
Ashleigh M. Chester ◽  
Martin Etter ◽  
Krunoslav Užarević ◽  
...  
Keyword(s):  
Subsequent Formation ◽  
Quenched Glass ◽  
Adsorptive Properties

Here we present efficient and scalable mechanochemical formation of hybrid organic-inorganic perovskites of the form [TPrA][M(dca)₃] (M = Mn²⁺, Co²⁺) and the subsequent formation of their bulk melt-quenched glass samples. The thermal, chemical and adsorptive properties of the materials are also investigated.

Visualization of the Platelet-Plasma Interface

1977 ◽  
Vol 35 ◽  
pp. 494-495
Author(s):  
D. C. Brindley ◽  
M. McGill
Keyword(s):  
Platelet Rich Plasma ◽  
Coagulation Factors ◽  
Platelet Membrane ◽  
Rabbit Platelet ◽  
Surface Coat ◽  
Special Relationship ◽  
Routine Method ◽  
Embedding Technique ◽  
Biochemical Analyses ◽  
Adsorptive Properties

Morphological and cytochemical studies of platelets have reported a surface coat, or glycocalyx, external to the plasma membrane (1). Biochemical analyses have likewise confirmed the highly adsorptive properties of platelets as transporters of coagulation factors (2). However, visualization of the platelet membrane by conventional EM procedures does not reflect this special relationship between the platelet and its plasma environment. By the routine method of alcohol-propylene oxide dehydration for Epon embedding, the lipid bilayer nature of the platelet membrane appears similar to other blood cells (Fig. 1). A new rapid embedding technique using dimethoxypropane (DMP) as dehydrating agent (13) has permitted ultrastructural analyses of the surface features of the platelet-plasma interface.Aliquots of human or rabbit platelet-rich plasma (PRP) were added to equal volumes of 6% glutaraldehyde in Millonig's buffer at 37° for 45 minutes, rinsed in buffer and postfixed in 1% osmium in Millonig's buffer for 45 minutes.

Features of the development of an unmanned rocket-culture technology in the first half of the twentieth century

2018 ◽  
pp. 135-144
Author(s):  
O. O. Gubka
Keyword(s):  
Twentieth Century ◽  
Subsequent Formation ◽  
Technical Schools ◽  
Space Industry ◽  
The World ◽  
Culture Technology

The features of unmanned rocket and space engineering´s development in the USSR and in the world in the first half of the XX century were considered in the article. They defined subsequent formation of scientific and technical schools in the rocket and space industry.

Metrological aspects of pre-flight anti-icing procedures for civil aircraft

2019 ◽  
pp. 22-26
Author(s):  
А. Богоявленский ◽  
A. Bogoyavlenskiy
Keyword(s):  
Negative Impact ◽  
Landing Gear ◽  
Flight Performance ◽  
Spray Nozzle ◽  
Subsequent Formation ◽  
Inlet Guide Vanes ◽  
Civil Aircraft ◽  
Engine Compressor ◽  
Temperature And Pressure ◽  
Instrumental Control

Snow-ice deposits formed on the outer surfaces of aircrafts on the ground during parking can have a negative impact during take-off due to the deterioration of aerodynamic and flight performance, a significant and even critical decrease in lift, increased drag, blocking controls, difficulty or blocking of landing gear retraction, damage to the blades of inlet guide vanes and/or the blades of an engine compressor. To exclude the influence of snow and ice deposits, anti-icing treatment is performed, including their removal and/or protection from subsequent formation. For this purpose, special anti-icing machines (deicers), equipped with such means of instrumental control as counters of anti-icing fluid pumps, measuring scales of anti-icing fluid tanks, thermometers and pressure gauges for temperature and pressure measuring at the outlet of a spray nozzle, are used. The article deals with the metrological aspects of civil aircrafts anti-icing prior to flight.

Fate of Toxic Organic Compounds in Activated Sludge and Integrated PAC Systems

1987 ◽  
Vol 19 (3-4) ◽  
pp. 471-482 ◽  
Author(s):  
W. J. Weber ◽  
B. E. Jones ◽  
L. E. Katz
Keyword(s):  
Activated Carbon ◽  
Activated Sludge ◽  
Organic Compounds ◽  
Powdered Activated Carbon ◽  
Carbon Adsorption ◽  
Powdered Carbon ◽  
Benzene Toluene ◽  
Adsorptive Properties ◽  
Carbon Concentrations ◽  
Toxic Organic Compounds

The addition of powdered activated carbon (PAC) to activated sludge treatment systems to enhance removal of specific toxic organic compounds from wastewater was evaluated. Nine organic compounds encompassing a range of solubility, volatility, biodegradability, and adsorptive properties were studied. Kate and equilibrium investigations were conducted to quantify the removal mechanisms of volatilization, biodegradation, biosorption, and carbon adsorption. Results from steady-state bioreactor studies showed that the addition of less than 100 mg/ℓ powdered activated carbon to the influent did not enhance the removal of the biodegradable target compounds investigated: benzene, toluene, ethylbenzene, o-xylene, chlorobenzene, and nitrobenzene. Significantly improved removals of the poorly degradable and non-biodegradable compounds 1,2-dichlorobenzene, 1,2,4-trichlorobenzene, and lindane occurred at influent powdered carbon concentrations in the 12.5 to 25 mg/ℓ range. Influent powdered carbon concentrations of 100 mg/ℓ effected overall removals of greater than 90%. The addition of powdered activated carbon not only reduced effluent concentrations but also reduced the amounts of the volatile compounds stripped to the atmosphere.

Microbial Genetic Screens for Monitoring Protein Misfolding Associated with Neurodegeneration: Tools for Identifying Disease-Relevant Genes and for Screening Synthetic and Natural Compound Libraries for the Discovery of Potential Therapeutics

2018 ◽  
Vol 24 (19) ◽  
pp. 2055-2075 ◽  
Author(s):  
Kalliopi Kostelidou ◽  
Ilias Matis ◽  
Georgios Skretas
Keyword(s):  
Protein Misfolding ◽  
Socioeconomic Impact ◽  
Genetic Screens ◽  
Subsequent Formation ◽  
The Past ◽  
Compound Libraries ◽  
Selection Systems ◽  
Cellular Factors ◽  
Effective Drugs ◽  
Potential Therapeutics

Neurodegenerative Diseases (ND) are a major threat to the aging population and the lack of a single preventive or disease-modifying agent only serves to increase their impact. In the past few years, protein misfolding and the subsequent formation of neurotoxic oligomeric/aggregated protein species have emerged as a unifying theme underlying the pathology of these complex diseases. Recently developed microbial genetic screens and selection systems for monitoring ND-associated protein misfolding have allowed the establishment of highthroughput assays for the identification of cellular factors and processes that are important mediators of NDassociated proteotoxicities. In addition, such systems have facilitated the discovery of synthetic and natural compounds with the ability to rescue the misfolding and the associated pathogenic effects of aggregation-prone proteins associated with NDs. This review outlines such available systems in bacteria and yeast, whose usage will likely accelerate the pre-clinical discovery process for effective drugs against a variety of NDs with high socioeconomic impact.

scholarly journals A complementary analysis of the porous structure of biochars obtained from biomass

2019 ◽  
Vol 30 (3) ◽  
pp. 325-329 ◽  
Author(s):  
Mirosław Kwiatkowski ◽  
Dimitrios Kalderis
Keyword(s):  
Structural Analysis ◽  
Porous Structure ◽  
Rice Husk ◽  
Wood Chips ◽  
Complementary Information ◽  
Analysis Methods ◽  
Eucalyptus Wood ◽  
Adsorptive Properties ◽  
Complementary Analysis ◽  
Carbonaceous Adsorbent

Abstract This paper presents the results of the analysis of the porous structure of biochars produced from biomass, namely eucalyptus, wood chips, pruning waste and rice husk. The structural analysis was carried out using the BET, the t-plot, the NLDFT and the LBET methods, which yielded not only complementary information on the adsorptive properties of obtained biochars from these materials, but also information on the usefulness of the structural analysis methods in question for the research into an effect of the technology of carbonaceous adsorbent preparation.

Adsorptive properties of activated charcoal/methanol combinations

1993 ◽  
Vol 3 (6-7) ◽  
pp. 567-575 ◽  
Author(s):  
Hu Jing ◽  
R.H.B. Exell
Keyword(s):  
Activated Charcoal ◽  
Adsorptive Properties
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