Transport system for 9×12 in. substrates in a laboratory vacuum deposition system

1989 ◽  
Vol 60 (2) ◽  
pp. 268-270
Author(s):  
A. N. Pargellis ◽  
T. V. Lake
Keyword(s):  
Transport System ◽  
Vacuum Deposition ◽  
Laboratory Vacuum

A New Fine-Structure Observed in Electron-Diffraction Rings

1973 ◽  
Vol 31 ◽  
pp. 48-49
Author(s):  
J. M. Corbett ◽  
J. Fairchild ◽  
F. W. Boswell
Keyword(s):  
Fine Structure ◽  
Electron Diffraction ◽  
Vacuum Deposition ◽  
Smoke Particles

Fine-structure in spotty electron diffraction riiig patterns has previously been observed for specimens made up of MgO smoke particles of cubic morphology. This fine-structure was shown to arise from refraction effects in the small cubes (Sturkey & Frevel). We have recently observed a different type of fine structure in patterns from MgO films prepared by vacuum deposition (Fig. 1). This fine-structure consists of sets of regularly spaced fringes occurring at random orientations in the rings. The fringes may be seen in Fig. 2 which shows a segment of the (200) ring magnified 7x from the pattern in Fig. 1. It was considered possible that each set of fringes might arise from two superimposed diffraction’ spots from suitably situated crystallites in the specimen. Experiments have been conducted which clearly demonstrate that the fringes do in fact arise in this way.

On the structural organization of biological pumps and channels

1984 ◽  
Vol 42 ◽  
pp. 138-141
Author(s):  
G. Zampighi ◽  
M. Kreman
Keyword(s):  
Active Transport ◽  
Transport System ◽  
Plasma Membranes ◽  
Transport Proteins ◽  
Molecular Organization ◽  
Passive Transport ◽  
Concentration Gradients ◽  
Cell Functions ◽  
Natural Concentration ◽  
Active Transport System

The plasma membranes of most animal cells contain transport proteins which function to provide passageways for the transported species across essentially impermeable lipid bilayers. The channel is a passive transport system which allows the movement of ions and low molecular weight molecules along their concentration gradients. The pump is an active transport system and can translocate cations against their natural concentration gradients. The actions and interplay of these two kinds of transport proteins control crucial cell functions such as active transport, excitability and cell communication. In this paper, we will describe and compare several features of the molecular organization of pumps and channels. As an example of an active transport system, we will discuss the structure of the sodium and potassium ion-activated triphosphatase [(Na+ +K+)-ATPase] and as an example of a passive transport system, the communicating channel of gap junctions and lens junctions.

Placental uric acid transport system and its impact on fetal development

2018 ◽  
Author(s):  
B Lüscher ◽  
D Surbek ◽  
P Schneider ◽  
M Baumann
Keyword(s):  
Uric Acid ◽  
Transport System ◽  
Fetal Development ◽  
Acid Transport

NUMERICAL INVESTIGATIONS AND PERFORMANCE EVALUATION OF A FOLDED TUBE HEAT TRANSPORT SYSTEM UNDER BOILING CONDITIONS

2018 ◽  
Vol 30 (4) ◽  
pp. 267-291
Author(s):  
Mukesh Kumar ◽  
Avinash Moharana ◽  
Raj K. Singh ◽  
Arun K. Nayak ◽  
Jyeshtharaj B. Joshi
Keyword(s):  
Performance Evaluation ◽  
Heat Transport ◽  
Transport System ◽  
Numerical Investigations ◽  
And Performance
Sign in / Sign up

Export Citation Format

Share Document