Calculation-graphic analysis of the IR spectrum of a glass batch containing sodium borate and silicate and boric and silicic acids

Silver impregnation techniques have been used for the demonstration of the complex carbohydrates in electron microscopy. However, the silver stains were believed to be technically sensitive and time consumming to perform. Currently, due to the need to more specifically evaluate immune complex for localization in certain renal diseases, a simplified procedure in conjunction with the use of the microwave has been developed and applied to renal and other biopsies. The procedure is as follows:Preparation of silver methenamine solution:1. 15ml graduated, clear polystyrene centrifuge tube (Falcon, No. 2099) was rinsed once with distilled water.2. 3% hexamethylene tetramine (methenamine) was added into the centrifuge tube to the 6ml mark.3. 3% silver nitrate was added slowly to the methenamine to the 7ml mark while agitating. (Solution will instantly turn milky in color and then clear rapidly by mixing. No precipitate should be formed).4. 2% sodium borate was added to the solution to the 8ml mark, mixed and centrifuged before use.

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Time-resolved, contrast-enhanced 3D MR angiography in the subclavian steal effect

VASA ◽

10.1024/0301-1526/a000009 ◽

2010 ◽

Vol 39 (1) ◽

pp. 85-93 ◽

Cited By ~ 1

Author(s):

Schubert

Keyword(s):

Mr Angiography ◽

Time Resolved ◽

Time To Peak ◽

Vertebral Arteries ◽

Subclavian Steal ◽

Cerebrovascular Events ◽

Graphic Analysis ◽

Contrast Enhanced ◽

Hemodynamic Information ◽

Supraaortic Vessels

The subclavian steal effect indicates atherosclerotic disease of the supraaortic vessels but rarely causes cerebrovascular events in itself. Noninvasive imaging providing detailed anatomic as well as hemodynamic information would therefore be desirable. From a group of 25 consecutive patients referred for MR angiography, four with absent or highly attenuated signal in one of the vertebral arteries on 3D multislab time-of-flight MR angiography were selected to undergo 3D time-resolved contrast-enhanced MR angiography. The time-resolved 3D contrast series (source images and MIPs) were evaluated visually and by graphic analysis of time-intensity curves derived from the respective V1 and V3 segments of both vertebral arteries on the source images. In two cases with high-grade proximal left subclavian stenosis, time-resolved 3D ce-MRA was able to visualise retrograde contrast filling of the left VA. There was a marked delay in time-to-peak between the left and right V1 segments in one case and a shallower slope of enhancement in another. In the other two cases, there was complete or collateralised segmental occlusion of the VAs.

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THE JET-COOLED HIGH-RESOLUTION IR SPECTRUM OF FORMIC ACID CYCLIC DIMER

Proceedings of the 72nd International Symposium on Molecular Spectroscopy ◽

10.15278/isms.2017.wd03 ◽

2017 ◽

Author(s):

Manuel Goubet ◽

Robert Georges ◽

P. Roy ◽

Atef Jabri ◽

Pascale Soulard ◽

...

Keyword(s):

High Resolution ◽

Formic Acid ◽

Ir Spectrum ◽

Cyclic Dimer

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Leaching Studies of Cement-Glass Package Containing Sodium Borate

MRS Proceedings ◽

10.1557/proc-84-393 ◽

1986 ◽

Vol 84 ◽

Cited By ~ 3

Author(s):

Masahiro Okamoto ◽

Koichi Chino ◽

Tsutomu Baba ◽

Tatsuo Izumida ◽

Fumio Kawamura ◽

...

Keyword(s):

Sodium Silicate ◽

Liquid Waste ◽

Sodium Borate ◽

Pressurized Water Reactor ◽

X Ray Diffraction ◽

Adsorption Ability ◽

Pressurized Water ◽

X Ray ◽

Solidification Reaction ◽

Main Components

AbstractA new solidification technique using cement-glass, which is a mixture of sodium silicate, cement, additives, and initiator of the solidification reaction, was developed for sodium borate liquid waste generated from pressurized water reactor (PWR) plants. The cement-glass could solidify eight times as much sodium borate as cement could, because the solidifying reaction of the cement-glass is not hindered by borate ions.The reaction mechanism of sodium silicate and phosphoric silicate (initiator), the main components of cement-glass, was studied through X-ray diffraction and compressive strength measurements. It was found that three- dimensionally bonded silicon dioxide was produced by polymerization of the two silicates. The leaching ratio of cesium from the cement-glass package was one-tenth that of the cement one. This low value was attributed to a high cesium adsorption ability of the cement-glass and it could be theoretically predicted accordingly.

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Sulfonyl isocyanides RSO2NC

10.26434/chemrxiv.5722528.v1 ◽

2017 ◽

Author(s):

Curt Wentrup ◽

Horst Briehl

Keyword(s):

Ir Spectrum ◽

Reaction Conditions ◽

Flash Vacuum Pyrolysis ◽

Vacuum Pyrolysis

Flash vacuum pyrolysis (FVP) of 5-azido-1-aryltetrazoles results in triple N2 elimination and formation of aryl isocyanides RNC, which rearrange in part to aroylnitriles RCN under the reaction conditions. Similar FVP of 5-azido-1-arenesulfonyltetrazoles generates a compound absorbing in the IR spectrum (77 K) at 2090 cm-1 and assigned the structure of arenesulfonyl isocyanide, ArSO2NC 11. FVP at temperatures above 600 oC results in progressively more nitrile ArSO2CN 12. Compound 11 also disappears on warming above -80 oC

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Sulfonyl isocyanides RSO2NC

10.26434/chemrxiv.5722528 ◽

2017 ◽

Author(s):

Curt Wentrup ◽

Horst Briehl

Keyword(s):

Ir Spectrum ◽

Reaction Conditions ◽

Flash Vacuum Pyrolysis ◽

Vacuum Pyrolysis

Flash vacuum pyrolysis (FVP) of 5-azido-1-aryltetrazoles results in triple N2 elimination and formation of aryl isocyanides RNC, which rearrange in part to aroylnitriles RCN under the reaction conditions. Similar FVP of 5-azido-1-arenesulfonyltetrazoles generates a compound absorbing in the IR spectrum (77 K) at 2090 cm-1 and assigned the structure of arenesulfonyl isocyanide, ArSO2NC 11. FVP at temperatures above 600 oC results in progressively more nitrile ArSO2CN 12. Compound 11 also disappears on warming above -80 oC

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Synthesis of the semi-rigid analogues of prothiadene and dithiadene as potential antidepressant and antihistamine agents: 11-[2-(Dimethylaminomethyl)cyclohexylidene]-6,11-dihydrodibenzo[b,e]thiepins and 4-[2-(dimethylaminomethyl)cyclohexylidene]-4,9-dihydrothieno-[2,3-c]-2-benzothiepins

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19851078 ◽

1985 ◽

Vol 50 (5) ◽

pp. 1078-1088 ◽

Cited By ~ 4

Author(s):

Zdeněk Polívka ◽

Jiří Holubek ◽

Emil Svátek ◽

Jan Metyš ◽

Miroslav Protiva

Keyword(s):

Hydrochloric Acid ◽

Ir Spectrum ◽

Title Compound ◽

Dilute Hydrochloric Acid ◽

Amino Alcohols ◽

Geometric Isomers ◽

Pharmacological Testing

Reaction of dibenzo[b,e]thiepin-11(6H)-one with 2-(dimethylaminomethyl)cyclohexylmagnesium chloride gave a mixture of stereoisomeric amino alcohols IX from which four homogeneous bases (IXa to IXd) were separated by chromatography. Dehydration of these compounds with boiling dilute hydrochloric acid afforded mixtures of racemic geometric isomers of the title compound VII, which were separated by crystallization. To the prevailing less polar base VIIa (E)-configuration was assigned on the basis of the IR spectrum. Using a similar procedure, thieno[2,3-c]-2-benzothiepin-4(9H)-one gave mixture of amino alcohols X from which three homogeneous stereoisomers X-A to X-C were isolated. Their dehydration resulted in both expected racemic geometric isomers VIII-A and VIII-B. Pharmacological testing proved the character of an antidepressant for the semi-rigid analogue of dithiadene VIII.

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