Reversible morphological changes of assembled supramolecular amphiphiles triggered by pH-modulated host–guest interactions

2016 ◽  
Vol 14 (24) ◽  
pp. 5714-5720 ◽  
Author(s):  
M. A. Olson ◽  
M. S. Messina ◽  
J. R. Thompson ◽  
T. J. Dawson ◽  
A. N. Goldner ◽  
...  
Keyword(s):  
Morphological Changes ◽  
Water Interface ◽  
Acid Base ◽  
Oblate Ellipsoid ◽  
Guest Binding ◽  
Morphological Transitions ◽  
The Relationship ◽  
Supramolecular Amphiphiles

Acid–base modulated host–guest binding at the micellar–water interface triggers reversible oblate ellipsoid-to-lamellar morphological transitions revealing the relationship between and morphology.

scholarly journals Novel hydrogen chemisorption properties of amorphous ceramic compounds consisting of p-block elements: exploring Lewis acid-base Al–N pair site formed in-situ within polymer-derived silicon-aluminum-nitrogen-based system

2021 ◽  
Author(s):  
Shotaro Tada ◽  
Norifumi Asakuma ◽  
Shiori Ando ◽  
Toru Asaka ◽  
Yusuke Daiko ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Active Site ◽  
Hydrogen Chemisorption ◽  
Acid Base ◽  
Polymer Derived Ceramics ◽  
System P ◽  
Ceramic Compounds ◽  
The Relationship

This paper reports on the relationship between the H2 chemisorption properties and reversible structural reorientation of the possible active site around Al formed in-situ within polymer-derived ceramics (PDCs) based on...

Carbon dioxide excretion in fishes

1986 ◽  
Vol 64 (3) ◽  
pp. 565-572 ◽  
Author(s):  
S. F. Perry
Keyword(s):  
Carbon Dioxide ◽  
Minor Amount ◽  
Acid Base ◽  
Plasma Bicarbonate ◽  
Convective Processes ◽  
Adrenergic Control ◽  
And Control ◽  
The Relationship ◽  
Rate Limiting ◽  
Subsequent Diffusion

The pattern and control of carbon dioxide excretion in fish is reviewed with particular emphasis on the site(s) of bicarbonate dehydration, the involvement of diffusive and convective processes, and the relationship with ionic and acid–base regulation. The principal route for carbon dioxide excretion in fish involves the catalysed dehydration of plasma bicarbonate within erythrocytes to form physically dissolved CO2 and the subsequent diffusion of physically dissolved CO2 across the gill epithelium. It is likely that bicarbonate entry into the erythrocyte in exchange for intracellular chloride, rather than branchial CO2 diffusion or blood/water convection, is the rate-limiting process in carbon dioxide excretion, although a change in any one of these factors will affect overall CO2 elimination. Additionally, a relatively minor amount of CO2 is hydrated within gill epithelial cells to form H+ and HCO3− ions that are exchanged for Cl− ions and Na+ ions, respectively. Evidence is presented indicating that branchial and erythrocytic HCO3−/Cl− exchanges are under adrenergic control and that modulations of these processes by elevated levels of circulating catecholamines may be important in regulating acid–base disturbances.

g-Cyclodextrins Bearing a Pyrenylamide Moiety. The Effect of Photoexcited-state Acid-Base Equilibrium of Appended Chromophone on Their Guest Binding

Heterocycles ◽  
1993 ◽  
Vol 35 (2) ◽  
pp. 559
Author(s):  
Tetsuo Osa ◽  
Iwao Suzuki ◽  
Yoshinobu Sakurai ◽  
Masahiro Ohkubo ◽  
Maki Ito ◽  
...  
Keyword(s):  
Acid Base ◽  
Base Equilibrium ◽  
Guest Binding ◽  
Acid Base Equilibrium ◽  
Photoexcited State

scholarly journals Short-Term Memory Deficits in the SLEEP Inbred Panel

2019 ◽  
Vol 1 (4) ◽  
pp. 471-488 ◽  
Author(s):  
Shailesh Kumar ◽  
Kirklin R. Smith ◽  
Yazmin L. Serrano Negron ◽  
Susan T. Harbison
Keyword(s):  
Learning And Memory ◽  
Sleep Duration ◽  
Genetic Architecture ◽  
Short Term Memory ◽  
Morphological Changes ◽  
Brain Structures ◽  
Social Conditions ◽  
Short Term ◽  
The Relationship ◽  
The Brain

Although sleep is heritable and conserved across species, sleep duration varies from individual to individual. A shared genetic architecture between sleep duration and other evolutionarily important traits could explain this variability. Learning and memory are critical traits sharing a genetic architecture with sleep. We wanted to know whether learning and memory would be altered in extreme long or short sleepers. We therefore assessed the short-term learning and memory ability of flies from the Sleep Inbred Panel (SIP), a collection of 39 extreme long- and short-sleeping inbred lines of Drosophila. Neither long nor short sleepers had appreciable learning, in contrast to a moderate-sleeping control. We also examined the response of long and short sleepers to enriched social conditions, a paradigm previously shown to induce morphological changes in the brain. While moderate-sleeping control flies had increased daytime sleep and quantifiable increases in brain structures under enriched social conditions, flies of the Sleep Inbred Panel did not display these changes. The SIP thus emerges as an important model for the relationship between sleep and learning and memory.

Acid/Base Properties and Phenylphosphonic Acid Complexation at the Aged γ-Al2O3/Water Interface

1995 ◽  
Vol 175 (1) ◽  
pp. 230-238 ◽  
Author(s):  
Erkki Laiti ◽  
Lars-Olof Öhman ◽  
Jan Nordin ◽  
Staffan Sjöberg
Keyword(s):  
Water Interface ◽  
Acid Base ◽  
Phenylphosphonic Acid ◽  
Base Properties
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