III. On a new substance occurring in the urine of a patient with mollities ossium

1848 ◽  
Vol 138 ◽  
pp. 55-62 ◽  
Keyword(s):  
Nitric Acid ◽  
Specific Gravity ◽  
Test Tube ◽  
High Specific Gravity ◽  
Solid Substance ◽  
Semi Solid ◽  
Very High

On the 1st of November 1845 I received from Dr. Watson the following note, with a test tube containing a thick, yellow, semi-solid substance:—“The tube contains urine of very high specific gravity; when boiled it becomes highly opake; on the addition of nitric acid it effervesces, assumes a reddish hue, becomes quite clear, but, as it cools, assumes the consistence and appearance which you see: heat reliquifies it. What is it ?” A few hours afterwards a specimen of the same urine, passed by a grocer forty-seven years of age, who had been out of health for thirteen months, was sent to me by Dr. MacIntyre. He being in attendance on the case with Dr. Watson, had two days previously first observed the peculiar reactions of the urine.

scholarly journals A NOTE ON VERY HIGH SPECIFIC GRAVITY OF THE URINE IN HEALTHY WOMEN

BMJ ◽  
1909 ◽  
Vol 2 (2541) ◽  
pp. 653-654
Author(s):  
H. French
Keyword(s):  
Specific Gravity ◽  
High Specific Gravity ◽  
Healthy Women ◽  
Very High

On the Effect of 2-Layer Thickness by High-Specific Gravity Armor Blocks on Wave Reflection

1999 ◽  
Author(s):  
Masahiro Ito ◽  
Yuitch Iwagaki ◽  
Hiroshi Murakami ◽  
Kenji Nemoto ◽  
Masato Yamamoto ◽  
...  
Keyword(s):  
Specific Gravity ◽  
Layer Thickness ◽  
Wave Reflection ◽  
High Specific Gravity

SUNKEN OIL AND THE REMOVAL OF OIL FROM SUNKEN WRECKS

2008 ◽  
Vol 2008 (1) ◽  
pp. 93-96 ◽  
Author(s):  
Hugh Parker ◽  
Tosh Moller
Keyword(s):  
Specific Gravity ◽  
High Specific Gravity ◽  
Public Expectations ◽  
Response Policy ◽  
The Prestige ◽  
Sunken Oil

ABSTRACT Following the technical triumph of removing most of the oil from the sunken wreck of the PRESTIGE, interest and expectations have been raised in equal measure. Since 2005 there have been a number of incidents worldwide involving sunken wrecks containing oil, as well as a smaller number of pollution cases in which oil spilled from ships has sunk due to its high specific gravity. The response to such incidents poses unique challenges and reference is made to ITOPF'S database of historical spills in order to demonstrate how attitudes and the policies for dealing with these cases have changed. The problems posed by oil in wrecks or on the seabed straddle the disciplines of ship salvage and conventional spill clean-up. Whilst the technology used in recovering such oil differs, the rationale for determining whether or not certain measures have merit is in large part based on an assessment of what is technically reasonable. These principles are reflected in the development of the IOPC Funds’ technical guidelines for the removal of oil from sunken wrecks. This paper explores the evolution of response policy with reference to key shipping incidents involving sunken wrecks and sunken oil. In the course of this review, the conflicts between public expectations and technical limitations are highlighted.

scholarly journals Deposition of barium sulphate as a cementing material of sandstone

1899 ◽  
Vol 64 (402-411) ◽  
pp. 374-377
Keyword(s):  
Chemical Analysis ◽  
Specific Gravity ◽  
Barium Sulphate ◽  
High Specific Gravity ◽  
Microscopical Examination ◽  
Large Area ◽  
Cementing Material

Some years ago I described the occurrence of a peculiar sandstone over a large area in Bramcote and Stapleford, near Nottingham. The sandstone was remarkable for its high specific gravity, and chemical analysis, supported by microscopical examination, proved that the high specific gravity was due to the existence in the sandstone of a large proportion of highly crystalline barium sulphate.

II.—The Preparation and Properties of Basic Copper Nitrate and the Hydrates of Copper Nitrate

1913 ◽  
Vol 32 ◽  
pp. 4-11
Author(s):  
Alexander Charles Cumming ◽  
Alexander Gemmell
Keyword(s):  
Transition Temperature ◽  
Nitric Acid ◽  
Specific Gravity ◽  
Copper Oxide ◽  
Copper Nitrate ◽  
Basic Salt ◽  
Acid Yield ◽  
Nitrate Trihydrate ◽  
Basic Copper Nitrate ◽  
Dilute Nitric Acid

SUMMARY1. Graham states that when nitric acid of specific gravity greater than 1·4 acts on copper oxide a basic nitrate is obtained. We were unable to obtain a basic salt under these conditions.2. Copper oxide and approximately 100 per cent. nitric acid yield copper nitrate trihydrate, nitrogen peroxide, and oxygen. The equation for the reaction is probably CuO + 6HNO3 = Cu(NO3)2, 3H2O + 4NO2 + O2.3. The only basic nitrate of copper appears to be Cu(NO3)2·3Cu(OH)2. The product obtained by heating the trihydrate to 100° has this composition, and is not Cu(NO3)2·2Cu(OH)2, as stated by Graham.4. Dehydration of copper nitrate does not yield anhydrous copper nitrate, but results in decomposition, with formation of basic copper nitrate, whether the dehydration is performed at ordinary or higher temperatures.5. Copper oxide does not interact with nitric anhydride.6. The only hydrates of copper nitrate appear to be the trihydrate and hexahydrate. The transition temperature is 24·65° (±0·05) corr.7. Concentrated nitric acid dehydrates the hexahydrate, while dilute nitric acid hydrates the trihydrate. It was not found possible to determine the concentration of nitric acid, which would be in equilibrium with both hydrates.

scholarly journals Shell Gland Oxygen Consumption in Hens Producing Eggs of Low or High Specific Gravity

1978 ◽  
Vol 57 (3) ◽  
pp. 809-810
Author(s):  
D.M. HUNTLEY ◽  
D.P. HOLDER
Keyword(s):  
Oxygen Consumption ◽  
Specific Gravity ◽  
High Specific Gravity ◽  
Shell Gland

Stability of high specific gravity genotypes of potatoes under high temperatures

1983 ◽  
Vol 60 (1) ◽  
pp. 17-26 ◽  
Author(s):  
Kathleen G. Haynes ◽  
F. L. Haynes
Keyword(s):  
Specific Gravity ◽  
High Temperatures ◽  
High Specific Gravity

scholarly journals Selection for Tuber Characters Can Maintain High Specific Gravity in a Diploid Potato Breeding Population

HortScience ◽  
1990 ◽  
Vol 25 (2) ◽  
pp. 227-228 ◽  
Author(s):  
K.G. Haynes ◽  
F.L. Haynes
Keyword(s):  
Specific Gravity ◽  
Recurrent Selection ◽  
Breeding Population ◽  
High Specific Gravity ◽  
Solarium Tuberosum ◽  
Hybrid Population ◽  
Base Population ◽  
Diploid Potato Breeding ◽  
Growing Conditions ◽  
Tuber Specific Gravity

A base population of high specific gravity clones was established from a diploid hybrid population of Solarium tuberosum Group Phureja and Solarium tuberosum Group Stenotomum previously adapted to the long-day growing conditions in North Carolina. This base population was subjected to two 2-year cycles of recurrent selection. During each cycle, selections in the field were made on the basis of tuber smoothness, shape, and size. Tubers from unselected clones were bulked by plots. Tuber specific gravity was determined for the selected and unselected (bulk) clones. Tuber specific gravity was significantly greater in the selected than in the unselected clones in each cycle of selection.

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