Results 31 to 40 of about 15,445 (293)

Electron tomography of fusiform vesicles and their organization in urothelial cells. [PDF]

open access: yesPLoS ONE, 2012
The formation of fusiform vesicles (FVs) is one of the most distinctive features in the urothelium of the urinary bladder. FVs represent compartments for intracellular transport of urothelial plaques, which modulate the surface area of the superficial ...
Samo Hudoklin   +4 more
doaj   +1 more source

Loss and reappearance of gap junctions in regenerating liver [PDF]

open access: yes, 1978
Changes in intercellular junctional morphology associated with rat liver regeneration were examined in a freeze-fracture study. After a two-thirds partial hepatectomy, both gap junctions and zonulae occludentes were drastically altered.
Revel, J.-P., Yee, A. G.
core   +2 more sources

Pore Damage Properties and Permeability Change of Coal Caused by Freeze-Thaw Action of Liquid Nitrogen

open access: yesAdvances in Civil Engineering, 2018
A laboratory test was conducted to investigate the effect of the freeze-thaw action of liquid nitrogen on the pore structure and permeability of coal rock. First, coal rock samples with similar sound velocities and permeabilities were selected.
Bo Li   +3 more
doaj   +1 more source

Electrostatically driven vacuum-encapsulated polysilicon resonators part I. design and fabrication [PDF]

open access: yes, 1993
Basic design issues and a fabrication process based on surface-micromachining techniques for electrostatically driven vacuum-encapsulated polysilicon resonators are presented.
Legtenberg, Rob, Tilmans, Harrie A.C.
core   +7 more sources

An ultra melt-resistant hydrogel from food grade carbohydrates [PDF]

open access: yes, 2017
© 2017 The Royal Society of Chemistry. We report a binary hydrogel system made from two food grade biopolymers, agar and methylcellulose (agar-MC), which does not require addition of salt for gelation to occur and has very unusual rheological and thermal
Horozov, Tommy S.   +3 more
core   +2 more sources

Freeze-fracture autoradiography: feasibility. [PDF]

open access: yesThe Journal of cell biology, 1976
We have shown that the combination of freeze-fracture with electron microscope autoradiography can be developed into a technique for correlating the molecular structure of the biological membrane with its chemical and functional characteristics. Within the limits of electron microscope autoradiographic resolution, FARG has the potential to detect the ...
K A, Fisher, D, Branton
openaire   +2 more sources

Crystal Initiation Structures in Developing Enamel: Possible Implications for Caries Dissolution of Enamel Crystals

open access: yesFrontiers in Physiology, 2017
Investigations of developing enamel crystals using Atomic and Chemical Force Microscopy (AFM, CFM) have revealed a subunit structure. Subunits were seen in height images as collinear swellings about 30 nM in diameter on crystal surfaces. In friction mode
Colin Robinson, Simon D. Connell
doaj   +1 more source

Liposomes encapsulating polymeric chitosan based vesicles - a vesicle in vesicle system for drug delivery [PDF]

open access: yes, 2000
Drug delivery systems comprising vesicles prepared from one amphiphile encapsulating vesicles prepared from a second amphiphile have not been prepared previously due to a tendency of the bilayer components of the different vesicles to mix during ...
Dufès, Christine   +3 more
core   +1 more source

Model Membrane Formations : Interaction of Sialoglycoprotein from Human Red Cell Membranes with Lipid monolayers

open access: yesCHIMIA, 1976
By penetration of enriched sialoglycoprotein preparations from human red cell membranes into a monolayer of red cell membrane lipids it is possible to form planar lipoprotein complexes.
P. Zahler, Ch. Rothen, R. Flückiger
doaj   +1 more source

Clastic Polygonal Networks Around Lyot Crater, Mars: Possible Formation Mechanisms From Morphometric Analysis [PDF]

open access: yes, 2017
Polygonal networks of patterned ground are a common feature in cold-climate environments. They can form through the thermal contraction of ice-cemented sediment (i.e. formed from fractures), or the freezing and thawing of ground ice (i.e.
A. Hagermann   +82 more
core   +5 more sources

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