Atomistically Modeling the Chemical Potential of Small Molecules in Dense Polymer Microstructures. 1. Method

1997 ◽  
Vol 30 (20) ◽  
pp. 6107-6113 ◽  
Author(s):  
Birgitta Knopp ◽  
Ulrich W. Suter ◽  
Andrei A. Gusev
Keyword(s):  
Small Molecules ◽  
Chemical Potential ◽  
Polymer Microstructures

Atomistically Modeling the Chemical Potential of Small Molecules in Dense Systems

2004 ◽  
Vol 108 (7) ◽  
pp. 2413-2417 ◽  
Author(s):  
Gyula Dömötör ◽  
Reinhard Hentschke
Keyword(s):  
Small Molecules ◽  
Chemical Potential

Chemical potential gradient driven permeation of small molecules through polymeric media

1997 ◽  
Vol 107 (24) ◽  
pp. 10714-10722 ◽  
Author(s):  
Suresh Sunderrajan ◽  
Carol K. Hall ◽  
Benny D. Freeman
Keyword(s):  
Small Molecules ◽  
Chemical Potential ◽  
Potential Gradient ◽  
Chemical Potential Gradient ◽  
Polymeric Media

Gap junctions in the prothoracic glands of the tobacco hornworm, Manduca sexta

1992 ◽  
Vol 50 (1) ◽  
pp. 706-707
Author(s):  
Ji-da Dai ◽  
M. Joseph Costello ◽  
Lawrence I. Gilbert
Keyword(s):  
Gap Junctions ◽  
Small Molecules ◽  
Manduca Sexta ◽  
Freeze Fracture ◽  
Cell Communication ◽  
Cellular Level ◽  
Thin Sections ◽  
Prothoracic Glands ◽  
Polyhydroxylated Steroids ◽  
Stimulation Of

Insect molting and metamorphosis are elicited by a class of polyhydroxylated steroids, ecdysteroids, that originate in the prothoracic glands (PGs). Prothoracicotropic hormone stimulation of steroidogenesis by the PGs at the cellular level involves both calcium and cAMP. Cell-to-cell communication mediated by gap junctions may play a key role in regulating signal transduction by controlling the transmission of small molecules and ions between adjacent cells. This is the first report of gap junctions in the PGs, the evidence obtained by means of SEM, thin sections and freeze-fracture replicas.

Fusion and Fission Processes in Exocytosis: Possible Roles for Synexin and Osmotic Lysis in the Two Events

1980 ◽  
Vol 38 ◽  
pp. 594-597
Author(s):  
H.B. Pollard ◽  
C.E. Creutz ◽  
C.J. Pazoles ◽  
J.H. Scott
Keyword(s):  
Small Molecules ◽  
Chromaffin Cells ◽  
Adrenal Glands ◽  
General Concept ◽  
Extracellular Calcium ◽  
Large Protein ◽  
Granule Membrane ◽  
Osmotic Lysis ◽  
Per Se ◽  
Chemical Evidence

Exocytosis is a general concept describing secretion of enzymes, hormones and transmitters that are otherwise sequestered in intracellular granules. Chemical evidence for this concept was first gathered from studies on chromaffin cells in perfused adrenal glands, in which it was found that granule contents, including both large protein and small molecules such as adrenaline and ATP, were released together while the granule membrane was retained in the cell. A number of exhaustive reviews of this early work have been published and are summarized in Reference 1. The critical experiments demonstrating the importance of extracellular calcium for exocytosis per se were also first performed in this system (2,3), further indicating the substantial service given by chromaffin cells to those interested in secretory phenomena over the years.

Chemical potential and dimensions of chain molecules in athermal environments

1996 ◽  
Vol 89 (6) ◽  
pp. 1733-1754 ◽  
Author(s):  
FERNANDO ESCOBEDO ◽  
JUAN DE PABLO
Keyword(s):  
Chemical Potential ◽  
Chain Molecules
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