scholarly journals A Crystalline Body Found in the Rod Inner Segment of the Frog's Eye

1959 ◽  
Vol 6 (3) ◽  
pp. 517-518 ◽  
Author(s):  
Eichi Yamada
Keyword(s):  
1875 ◽  
Vol 8 ◽  
pp. 382-386
Author(s):  
Crum Brown ◽  
E. A. Letts

In this paper the authors describe in detail compounds of dimethyl-thetine, some of which were enumerated in an earlier communication. Hydrobromate of dimethyl-thetine is readily obtained as a colourless crystalline body by the action of sulphide of methyl on bromacetic acid at ordinary temperatures. Its analysis shows that it contains quantities of the different elements agreeing with the formula C4H9BrSO2, and its mode of formation and reaction lead to the constitutional formula—


1997 ◽  
Vol 34 (7) ◽  
pp. 992-1007 ◽  
Author(s):  
Paige R. Peapples ◽  
Wesley K. Wallace ◽  
Catherine L. Hanks ◽  
Paul W. Layer ◽  
Paul B. O'Sullivan

Involvement of the Devonian Jago stock in Cenozoic fold-and-thrust deformation of the northeastern Brooks Range illustrates the influence of a relatively small, isolated crystalline body on the mechanical stratigraphy and subsequent deformational behavior of an otherwise layered sedimentary package. The small size of the stock allowed it and the structurally coupled overlying Mississippian Kekiktuk Conglomerate to deform nonpenetratively as a horse in a regional duplex, in contrast to the semiductile behavior of the nearby but much larger Okpilak batholith. Shear was localized in the upper part of the stock and the conglomerate due to partial detachment of the overlying Carboniferous Lisburne Group. North-vergent thrust-related folds formed in the mechanically layered Lisburne Group carbonates instead of the symmetrical, unfaulted detachment folds more typical of the region because an underlying regional detachment horizon in the Mississippian Kayak Shale is depositionally absent over the stock. Unusually competent contact-metamorphosed pre-Mississippian metasedimentary rocks were thrust over the stock and its cover because a ramp formed at the edge of the stock and cut upsection through the Lisburne Group due to the absence of Kayak Shale. A 40Ar/39Ar age of foliated white mica indicates thrusting of the stock by 61 Ma; fission-track ages indicate cooling at ~44 and ~28 Ma. These ages indicate a cooling history that implies ~11 km of unroofing since ~61 Ma, only ~1.5 km of which can be explained by the inferred duplex structure. The remaining ~9.5 km of unroofing is most likely due to subduplex structural thickening above a deep regional detachment.


2018 ◽  
Vol 27 (1) ◽  
pp. 22-39 ◽  
Author(s):  
Michelle Rada

In a 1937 letter to Axel Kaun, Beckett describes the mark of modern literary ambition as an inexhaustible drive to ‘drill one hole after another into [language] until that which lurks behind, be it something or nothing, starts seeping through.’ Much is made of this little line by readers of Beckett from Gilles Deleuze and Mladen Dolar to, more recently, Alenka Zupançiç. As its title teases, this essay takes up Beckett's directive to read for, with, and through the holes bored into language alongside the bodies—narrated and narrating—captured by it as so many boring, banal holes into which meaning, form, and other bodies can be pushed. In The Lost Ones, Beckett's short prose piece from 1971, bodies abound: lost, scurrying, shivering, defeated, sweaty, aroused, pained, aging, nauseated, desiring bodies. Beckett's ‘most anthropological work,’ as C. J. Ackerley and S. E. Gontarski have dubbed it, The Lost Ones proposes a series of fundamental contradictions or antagonisms between the narrating ‘anthropological’ voice concerned with quantitatively capturing a neutralized (and neutered, disembodied) totality—and the titular ‘lost’ bodies that inhabit the world of the text, for whom embodiment wholly determines both the potentialities and limitations of life, movement, and feeling. The ‘bore’ of a cylinder—the shape of the contained world of The Lost Ones—incidentally also names the diameter of empty space, the hole, around which its form wraps. This essay explores the antagonistic relationship between the circumscribing forces that envelop and contain life in the cylindrical space of narration, and its bore: the ‘something or nothing,’ as Beckett might put it, into which a substance can drill, enter, flood, leak, or fall. The objectifying impulses of the affectively eviscerating, abstracted narrator of The Lost Ones short-circuit throughout the text in special moments, when the bodies the voice describes erupt into what this essay will call a ‘crystal image.’ Taken from Deleuze's Cinema books, the crystal image and its transmission through ‘crystalline description’ name a set of aesthetic operations through which antagonisms can coexist. In other words: where otherwise mutually exclusive contradictions appear simultaneously as imbricated conditions of possibility for a single image. While the voice gazes, god-like, from above the cylinder, the bodies it describes explode its forms of containment with a kind of qualitative surplus that over and again impedes the narrator's attempts to totalize, circumscribe, and define the limits of embodied and affective life. I argue that the eruption of affect within the scientistic descriptive mode not only forms a crystal image out of an otherwise contained realm of quantifications, but that by pinning oppositional forms of aesthetic capture and representation against one another, the text reveals fundamental contradictions at play within narration and description more broadly. These contradictions and equivocations are not to be resolved or reconciled, I argue, but animated, sparked, and put into play through the process of reading.


The method employed by the author for examining the capability of gases to assume the liquid or solid form, consisted in combining the condensing powers of mechanical compression with that of very considerable depressions of temperature. The first object was ob­tained by the successive action of two air-pumps; the first having a piston of one inch in diameter, by which the gas to be condensed was forced into the cylinder of the second pump, the diameter of whose piston was only half an inch. The tubes into which the air, thus further condensed, was made to pass, were of green bottle glass, from one-sixth to one-quarter of an inch in external diameter, and had a curvature at one portion of their length adapted to im­mersion in a cooling mixture: they were provided with suitable stop-cocks, screws, connecting pieces, and terminal caps, all very carefully made, and rendered sufficiently air-tight to retain their gaseous contents under the circumstances of the experiments, and when they were sustaining a pressure of fifty atmospheres, as ascer­tained by mercurial gauges connected with the apparatus. Cold was applied to the curved portions of the tube by their immersion in a bath of Thilorier’s mixture of solid carbonic acid and ether. The degree of cold thus produced, when the mixture was surrounded by the air, estimated by an alcohol thermometer, was a temperature of —106° Fahr. But on placing the mixture under an air-pump, and removing the atmospheric pressure, leaving only that of the vapour of carbonic acid, which amounted only to 1-24th of the former, (that is to the pressure of a column of 1·2 inch of mercury,) the ther­mometer indicated a temperature of 166° below zero of Fahrenheit’s scale. In this state, the ether was very fluid; and the bath could be kept in good order for a quarter of an hour at a time. The author found that there were many gases which, on being sub­jected to cold of this extreme intensity, condensed into liquids, even without a greater condensation than that arising from the ordinary at­mospheric pressure, and that they could then be preserved, sealed up in glass tubes, in this liquid state. Such was the case with chlorine, cyanogen, ammonia, sulphuretted hydrogen, arseniuretted hydrogen, hydroiodic acid, hydrobromic acid, carbonic acid, and euchlorine. With respect to some other gases, such as nitric oxide, fluosilicon, and olefiant gas, it was difficult to retain them for any length of time in the tubes, in consequence of the chemical action they exerted on the cements used in the joinings of caps and other parts of the apparatus. Hydroiodic and hydrobromic acids could be obtained either in the solid or liquid state. Muriatic acid gas did not. freeze at the lowest temperature to which it could be subjected. Sulphu­rous acid froze into transparent and colourless crystals, of greater specific gravity than the liquid out of which they were formed. Sulphuretted hydrogen solidified in masses of confused crystals of a white colour, at a temperature of —122° Fahr. Euchlorine was easily converted from the gaseous state into a solid crystalline body, which, by a slight increase of temperature, melted into an orange- red fluid. Nitrous oxide was obtained solid at the temperature of the carbonic acid bath in vacuo , and then appeared as a beautifully clear and colourless crystalline body. The author conceives that in this state it might, in certain cases, be substituted with advantage for carbonic acid in frigorific processes, for arriving at degrees of cold far below those hitherto attained by the employment of the latter substance. Ammonia was obtained in the state of solid white crystals, and retained this form at a temperature of —103°.


Nano Letters ◽  
2021 ◽  
Author(s):  
Cyril Garnero ◽  
Alexandre Pierrot ◽  
Christophe Gatel ◽  
Cécile Marcelot ◽  
Raul Arenal ◽  
...  

1973 ◽  
Vol 12 (1) ◽  
pp. 287-311
Author(s):  
B. BACCETTI ◽  
R. DALLAI ◽  
A. G. BURRINI

The spermatozoa of some species of Diptera belonging to the Psychodidae are described. In the 4 species examined, they appear needle-shaped, non-motile, anteriorly flattened, posteriorly bifid. Flagella, and any microtubule system, are lacking, and the only organelles encountered are an extremely elongated nucleus, a prominent acrosome, a well developed subacrosomal body, a slender, somewhat elongated mitochondrial derivative and a conspicuous multilayered membrane wall, produced by the superimposition of the plasma membrane and the acrosomal membrane. The mitochondrion is devoid of a crystalline axis, while the acrosome contains a longitudinal, cross-striated para-crystalline body. Centrioles are absent throughout the spermatid stage. Sperms and spermatids are organized in syncytia of 210 elements.


Nano Letters ◽  
2011 ◽  
Vol 11 (4) ◽  
pp. 1641-1645 ◽  
Author(s):  
Lise-Marie Lacroix ◽  
Natalie Frey Huls ◽  
Don Ho ◽  
Xiaolian Sun ◽  
Kai Cheng ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document