We present laboratory studies and field observations that explore the role of aminium salt formation in atmospheric nanoparticle growth. These measurements were performed using the Thermal Desorption Chemical Ionization Mass Spectrometer (TDCIMS) and Ultrafine Hygroscopicity Tandem Differential Mobility Analyzers. Laboratory measurements of alkylammonium-carboxylate salt nanoparticles show that...

All the synthetic detergents and bile salts I have tried denature proteins such as hemoglobin and egg albumin at the isoelectric point 1 and keep the denatured isoelectric protein in solution. Some detergents in sufficiently high concentration can prevent the precipitation of denatured protein by trichloracetic acid, tungstic acid, and acid ferric sulfate. In fact, the origin of the present inv...

Water produced with coalbed natural gas (CBNG) attains its characteristic sodium-bicarbonate composition through a series of processes, including dissolution of salts, precipitation of salts, pyrite oxidation, ion exchange, sulfate reduction, and methanogenesis. After CBNG-produced water is discharged to the surface, interaction with the atmosphere will initiate the precipitation of calcite, ir...

Modern orb-weaving spiders use micron-sized glue droplets on their viscid silk to retain prey in webs. A combination of low molecular weight salts and proteins makes the glue viscoelastic and humidity responsive in a way not easily achieved by synthetic adhesives. Optically, the glue droplet shows a heterogeneous structure, but the spatial arrangement of its chemical components is poorly unders...

Some time ago I entered upon a study of the relations of different salts and nutrients to the metabolism of bacteria. The first step in the investigation lay in the preparation of a salt-free culture medium. A perusal of the literature indicated that the preparation of such a medium had never been really at tempted with natural nutrients; and all the work upon the influence of particular salts ...

BMJ 1993;306:1527-9 Thallium is a heavy metal whose salts are used in some rodent poisons and in the manufacture of optical lenses, semiconductors, scintillation counters, low temperature thermometers and switching devices, green coloured fireworks, and imitation jeweliery, and as chemical catalysts. In clinical practice thallium isotopes are used in cardiac scanning,12 but the use of thallium ...

Experimental studies generally performed at this laboratory on the solubility of particular salts and oxides in dilute and concentrated aqueous solutions of electrolytes at temperatures up to 400°C are presented. The techniques used are described. Some of this work applies an extended Debye-HUckel equation as a function of the ionic strength of the solution at the high temperatures. From the va...

THESE EXPERIMENTS SUGGEST THE FOLLOWING CONCLUSIONS CONCERNING HEMOLYTIC ACTION: 1. It is probably the proteid part of the serum which inhibits the bile salts. 2. The cholalic acid group is the active part of the bile salt molecule. 3. The protection afforded by bile salts against serum is of especial interest from the following considerations: (a) The protective action is a property apparently...

Cadmium sulphide films were prepared by Chemical Bath Deposition (CBD) technique from CdCl2, CdSO4, Cd(CH3COO)2 respectively, as cadmium precursor salts, and thiourea in ammoniacal medium. In this paper we study the changes in the morphology and properties of the films prepared from different cadmium salts, although the starting reaction parameters as concentration of the reactants, pH (denoted...

Some phosphorus chemical shifts of quaternary phosphorium salts had previously been reported4 and it was shown that these chemical shifts could be linearly related to the sum of the ob values5 for the corresponding groups in tertiary phosphines. The op values are group contributions which have been scaled so that the methyl group has a value of zero, in analogy to H a m m e t and T a f t o-para...