Petrological Notes on a Porphyry from the “Seven Stones”, Scilly Isles

1925 ◽  
Vol 62 (5) ◽  
pp. 224-226
Author(s):  
Henry B. Milner
Keyword(s):  
Wide Area ◽  
Geological Society ◽  
Local Inhabitant

During the course of work on the Pliocene deposits of West Cornwall, the writer had occasion to search a wide area forspecimens of that increasingly rare but fascinating rock, the Wolf Rock phonolite. Inquiries were mainly confined to the most likely places for securing such material, apart from the rock itself, i.e. at the cottages of fishermen accustomed to work among the dangerous reefs off Lands End and the Scilly Isles. Although personal efforts to find such specimens provedby no means abortive, it was ultimately through the good offices of the Honorary Secretary and Curator of the Royal Geological Society of Cornwall, Mr. J. B. Cornish, that excellent specimens of the Wolf Rock phonolite, Longships schist, and Seven Stones porphyry were obtained from a local inhabitant, who apparently had an eye for novelties to adorn his domestic mantelpiece.

Algorithms for automated montage synthesis of images from laser-scanning confocal microscopes

1995 ◽  
Vol 53 ◽  
pp. 650-651
Author(s):  
D. E. Becker
Keyword(s):  
Image Analysis ◽  
High Resolution ◽  
Laser Scanning ◽  
Cell Counting ◽  
Wide Area ◽  
Data Set ◽  
Computational Synthesis ◽  
Automated Cell Counting ◽  
Partial View ◽  
The Individual

An efficient, robust, and widely-applicable technique is presented for computational synthesis of high-resolution, wide-area images of a specimen from a series of overlapping partial views. This technique can also be used to combine the results of various forms of image analysis, such as segmentation, automated cell counting, deblurring, and neuron tracing, to generate representations that are equivalent to processing the large wide-area image, rather than the individual partial views. This can be a first step towards quantitation of the higher-level tissue architecture. The computational approach overcomes mechanical limitations, such as hysterisis and backlash, of microscope stages. It also automates a procedure that is currently done manually. One application is the high-resolution visualization and/or quantitation of large batches of specimens that are much wider than the field of view of the microscope.The automated montage synthesis begins by computing a concise set of landmark points for each partial view. The type of landmarks used can vary greatly depending on the images of interest. In many cases, image analysis performed on each data set can provide useful landmarks. Even when no such “natural” landmarks are available, image processing can often provide useful landmarks.

On convenient use of nanoprobe and scanning without a stem unit in an EM-420

1987 ◽  
Vol 45 ◽  
pp. 138-139
Author(s):  
K. K. Christenson ◽  
J. A. Eades
Keyword(s):  
Wide Area ◽  
Pole Piece ◽  
Operating Condition ◽  
Objective System

One of the strengths of the Philips EM-400 series of TEMs is their ability to operate under two distinct optical configurations: “microprobe”, the normal TEM operating condition which allows wide area illumination, and “nanoprobe”, which gives very small probes with high angular convergence for STEM imaging, microchemical and microstructural analyses. This change is accomplished by effectively turning off the twin lens located in the upper pole piece which changes the illumination from a telefocus system to a condenser-objective system. The deflection and tilt controls and alignments are designed for microprobe use and do not function properly when in nanoprobe. For instance, in nanoprobe the deflection control gives a mix of deflection and tilt; as does the tilt control.

The Geological Society of America

1894 ◽  
Vol 37 (941supp) ◽  
pp. 15043-15044
Author(s):  
E. O. Hovey
Keyword(s):  
Geological Society

Geological Katabasis : Geology and the Christian Underworld in Kingsley's The Water-Babies

2017 ◽  
Vol 7 (3) ◽  
pp. 195-209
Author(s):  
Rachel Fountain Eames
Keyword(s):  
Earth Science ◽  
Divine Comedy ◽  
The Novel ◽  
Geological Society

Charles Kingsley's lifelong interest in geology is well documented – from the gentleman geologists of his early novels and his membership of the Geological Society, to his introduction to earth science for children, Madam How and Lady Why (1870) – but the influence of geological ideas in The Water-Babies (1863) has been largely overlooked. Instead, academics have broadly categorised the novel as an ‘evolutionary parable’, emphasising Darwinian influences to the exclusion of contemporary geology. I propose that there is a distinct geological subtext underpinning The Water-Babies. Acknowledging both its scientific and religious contexts, I argue that Kingsley integrates elements of his geological studies into clear stratigraphic forms in the novel; that these ideas recur in the novel's surface geography and are informed by his reading of contemporary geologists; and that The Water-Babies is part of a longstanding generic tradition of Christian geological katabasis that can be traced back to Dante's Divine Comedy (1555).

Possibilities for realizing a wide-area differential navigation using the GPS and GLONASS signals in Ukraine

1998 ◽  
Vol 4 (5-6) ◽  
pp. 56-61 ◽  
Author(s):  
A.P. Vereshak ◽  
◽  
A.A. Zhalilo ◽  
I.G. Nozdrin ◽  
S.N. Flerko ◽  
...  
Keyword(s):  
Wide Area
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