scholarly journals REGULATION OF RESPIRATION.-THE EFFECT UPON SALIVARY SECRETION OF THE INTRAVENOUS ADMINISTRATION OF AMMONIUM CHLORIDE AND AMMONIUM CARBONATE

1930 ◽  
Vol 20 (4) ◽  
pp. 327-332 ◽  
Author(s):  
Nathan B. Eddy
Keyword(s):  
Ammonium Chloride ◽  
Intravenous Administration ◽  
Ammonium Carbonate ◽  
Salivary Secretion ◽  
Regulation Of Respiration

scholarly journals IV. On evaporation and dissociation. Part I

1886 ◽  
Vol 39 (239-241) ◽  
pp. 228-229 ◽  
Keyword(s):  
Acetic Acid ◽  
Free Surface ◽  
Succinic Acid ◽  
Ammonium Chloride ◽  
Phthalic Acid ◽  
Chloral Hydrate ◽  
Ammonium Carbonate ◽  
Gaseous State ◽  
Different Temperatures ◽  
Maximum Temperatures

The authors describe experiments made with the object of ascertaining whether the coincidence of the curves which represent the vapour-pressures of stable solid and liquid substances at different temperatures, with those indicating the maximum temperatures attainable by the same substances at different pressures, when evaporating with a free surface, holds good also for bodies which dissociate in their passage to the gaseous state. The substances examined were chloral hydrate, chloral methyl, and ethyl alcoholates, butyl chloral hydrate, ammonium carbonate, ammonium chloride, aldehyde ammonia, phthalic acid, succinic acid, nitric peroxide, and acetic acid.

Reactions of iron and manganese powders with ammonium chloride and ammonium carbonate

1978 ◽  
Vol 17 (7) ◽  
pp. 495-496
Author(s):  
I. D. Radomysel'skii ◽  
I. D. Martyukhin ◽  
V. V. Chernienko
Keyword(s):  
Ammonium Chloride ◽  
Ammonium Carbonate ◽  
Iron And Manganese

Sulphur metabolism in sheep. I. Preliminary investigations on the movement of sulphur in the sheep's body

1969 ◽  
Vol 20 (4) ◽  
pp. 725 ◽  
Author(s):  
AC Bray
Keyword(s):  
Gastrointestinal Tract ◽  
Intravenous Administration ◽  
Intestinal Tract ◽  
Intestinal Bacteria ◽  
Salivary Secretion ◽  
Sulphur Metabolism ◽  
Total Sulphur ◽  
Inorganic Sulphate ◽  
Sulphate Sulphur ◽  
Series Of Experiments

In a series of experiments with sheep maintained on high sulphur rations, measurements were made on the levels of 35S in urine, faeces, and various body fluids following single intravenous infusions of sodium [3%]sulphate and single infusions of sodium [35S]sulphate or sodium [353]sulphide into the gastrointestinal tract. Sulphide was rapidly absorbed from the duodenum and post-duodenal intestinal tract, an estimated 40–90% of the dose being absorbed within 60 min. Absorption of sulphate from the same region was much slower, 25% or less being absorbed over a 60-min interval. An attempt to use antibiotics to eliminate the effects of the intestinal bacteria on the metabolism of [35S]sulphate before absorption was not conclusive. Following intravenous administration of sodium [35S]sulphate, 12–19% of the dose was recovered in the faeces within 6 days. This activity appeared to be due to secretion into the post-ruminal tract rather than to return of 35S by salivary secretion or by passage across the rumen wall. Sodium [35S]sulphate was reduced to sulphide in the rumen and appreciable amounts appeared to be absorbed from this organ. The variations in total sulphur and sulphide of rumen digesta, urinary total sulphur, and blood inorganic sulphate levels during the day appeared to be related. Whole blood inorganic sulphate sulphur levels varied between 2 and 6 mg%. Urinary excretion following intravenous administration of 35S was extremely rapid, at least 70% of the dose being collected within 24 hr.

POLYMERS OF AMINOACETALDEHYDE

1945 ◽  
Vol 23b (4) ◽  
pp. 158-163
Author(s):  
H. H. Richmond ◽  
George F. Wright
Keyword(s):  
Molecular Weight ◽  
Ammonium Chloride ◽  
Ammonium Carbonate ◽  
Hydroxyl Groups ◽  
Molecular Weight Determination ◽  
Amino Groups ◽  
Primary Amino

The compound designated by Emil Fischer as 2,5-dihydroxypiperazine has been shown to be tris-aminomethyltrioxane by molecular weight determination of its derivatives. These benzoyl and benzenesulphonyl chloride derivatives further demonstrate the absence of hydroxyl groups and the presence of primary amino groups in the original compound. It has been found that use of ammonium carbonate, but not ammonium chloride, enhances the yield of aminoacetal obtained by ammonolysis of chloroacetal.

Alkaline Leaching of Low Grade Complex Zinc Oxide Ore

2010 ◽  
Vol 158 ◽  
pp. 12-17 ◽  
Author(s):  
Shao Jian Ma ◽  
Jin Lin Yang ◽  
Gui Fang Wang ◽  
Wei Mo ◽  
Xiu Juan Su
Keyword(s):  
Zinc Oxide ◽  
Metal Oxide ◽  
Ammonium Chloride ◽  
Ammonium Carbonate ◽  
Preliminary Investigation ◽  
Low Grade ◽  
Leaching Rate ◽  
Alkaline Leaching ◽  
Solid Ratio ◽  
Zn Content

Alkaline leaching is an important way for treating low grade metal oxide ore, which has some advantages such as low corrosion and low pollution compared to acidic leaching. In order to recover the zinc from a low grade complex zinc oxide ore in which the grade of Zn and Fe are 13 wt.% and 40.2 wt.%, respectively, and 52.8% of Zn is contained in siderite, 34.63% in limonite and 11.55% in smithsonite, this paper presents a preliminary investigation of this type of ore by alkaline leaching method. In this study, ammonia-ammonium chloride and ammonia-ammonium carbonate were used as the leaching reagents. The effects of alkaline concentration, leaching time, leaching temperature and liquid to solid ratio (L/S) were studied, respectively. The results show that 43.15% of initial Zn content was extracted adopting ammonia-ammonium chloride as the leaching reagent in 4.5M at 30°C for 3h with a liquid to solid ratio of 4:1, while 43.07% of Zn recovery was achieved employing ammonia-ammonium carbonate as the leaching reagent at 5M, 30°C and 4:1(L/S). The low leaching rate of Zn is probably attributed to that the zinc contained in siderite was not extracted completely because Zn and Fe exist as isomorphism in siderite.

THE USE OF AMMONIUM SOURCE OF NITROGEN IN THE METABOLISM OF ASPERGILLUS NIDULANS EIDAM

1961 ◽  
Vol 39 (4) ◽  
pp. 955-964 ◽  
Author(s):  
Kaiser Naguib ◽  
Kamel Saddik
Keyword(s):  
Ammonium Nitrate ◽  
Aspergillus Nidulans ◽  
Ammonium Chloride ◽  
Sodium Nitrate ◽  
Culture Medium ◽  
Ammonium Carbonate ◽  
High Protein ◽  
High Fat ◽  
Ph Change ◽  
Short Period

Aspergillus nidulans was grown as surface cultures on three ammonium salts, namely: ammonium chloride, ammonium carbonate, and ammonium nitrate in a basal medium favorable for fat formation. It was also grown on sodium nitrate for comparison. Growth, uptake of sugar and nitrogen, fat and protein syntheses, and pH change in the culture media were all followed over an incubation period of 20 days at 25° C.Growth on ammonium chloride was suppressed after a short period, when the pH of the medium dropped to a very low value. Mycelial felts had high protein contents but insignificant amounts of fat. In ammonium carbonate cultures, fungal growth continued yielding heavy mycelial felts with high fat content. But nitrogen utilization ceased while an ample supply was still present in the culture medium leading to low protein content in the mycelial felts. This could not be attributed to any drastic change in the pH of the culture medium; the pH changed only within reasonable limits.Growth was best on ammonium nitrate. Mycelial felts contained high protein and high fat. The change in pH of the medium, during the early period of incubation, indicated preferential absorption of ammonium to nitrate ions. Growth on sodium nitrate started by a lag period, but soon became active and gave rise to a heavy mycelium.The present findings also showed that nitrate nitrogen was more conducive to protein synthesis by Aspergillus nidulans than was ammonium nitrogen. Fat formation, on the other hand, was lower on sodium nitrate than on ammonium carbonate or ammonium nitrate.

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