Assaying

Definitions

  • Webster's Revised Unabridged Dictionary
    • n Assaying The act or process of testing, esp. of analyzing or examining metals and ores, to determine the proportion of pure metal.
    • ***
Century Dictionary and Cyclopedia
    • n assaying The act or art of testing metals, ores, or alloys in order to ascertain the quantity of gold or silver or any other metal present in them. There are two modes of assaying, one of which is sometimes employed to corroborate the other. The one is called the humid or wet process, in which the solution of the metals is effected by means of acids, after which those sought for are precipitated by proper reagents. The other is called the dry process, and is performed by the agency of fire. The first is generally employed for the purpose of estimating the quantity of gold or silver in an alloy, and the second is chiefly applied to ores. Tests are also made by comparison of specific gravities, and by the color of the streak or trace made by rubbing the ore upon a rough surface. In Great Britain each article of silver or gold plate is assayed at Goldsmiths Hall previously to being sold, in order to determine the exact richness of the metal of which it is made. See hall-mark.
    • n assaying In chem., this term is usually applied to the ascertainment of the presence and amount of one or more metals in a given substance, and commonly refers to the precious metals, gold and silver. But it is sometimes used in the more general sense, the testing or examination of any substance, as, for example, the determination of the proportion of pure sulphur in a sample of the crude material.
    • ***
Chambers's Twentieth Century Dictionary
    • Assaying the process of assaying or determining the proportion of pure metal in an ore or alloy
    • ***

Etymology

Chambers's Twentieth Century Dictionary
O. Fr. assayer, n. assai. See Essay.

Usage

In literature:

Therewith Sir Ector assayed to pull out the sword, and failed.
"Stories of King Arthur and His Knights" by U. Waldo Cutler
When you haue found this one certaine Drop of Naturall veritie, procede on, to Inferre, and duely to make assay, of matter depending.
"The Mathematicall Praeface to Elements of Geometrie of Euclid of Megara" by John Dee
Now would I liefer keep within compass according to my smaller conditions than assay to rival the success of my kinsman Knut.
"The Sagas of Olaf Tryggvason and of Harald The Tyrant (Harald Haardraade)" by Snorri Sturluson
It was but the work of a moment to loosen the hitch about her ankles and she assayed to rise.
"Prairie Flowers" by James B. Hendryx
Revised, Corrected, and considerably Enlarged, with a chapter on the Assaying of Fuel, &c. By A.
"In the Forbidden Land" by Arnold Henry Savage Landor
If we liken them to gold, she has made her assay and says the gold is pure.
"Jesus the Christ" by James Edward Talmage
High-grade ore too, we fancy; but we'll know more about that when we hear from the assayer.
"The Highgrader" by William MacLeod Raine
Virtue must be proved by temptation, and gold comes forth purer from the hands of the assayer.
"Clarimonde" by Théophile Gautier
A friend of mine brought down some sand from the sea-beach near Victoria, and assayed it the other day.
"Handbook to the new Gold-fields" by R. M. Ballantyne
We see in it a bold but rude assay at government.
"Blackwood's Edinburgh Magazine, Volume 61, No. 378, April, 1847" by Various
***

In poetry:

I cannot eat a bit of bread in peace,
I cannot take a wink of sleep at ease,
I cannot drink, or any work begin,
But he assays to turn it all to sin.
"A Prayer Against The Temptations, And Assaults Of The Devil" by Rees Prichard
I saw the doubtful scene; the hard assay,
The daring crown'd with victory at last;
I saw the ancient forest fall away,
I saw the little empire spreading fast.
"To The Muse. L'Envoi" by James Avis Bartley
'I shall assay,' said Gareth with a smile
That maddened her, and away she flashed again
Down the long avenues of a boundless wood,
And Gareth following was again beknaved.
"Gareth And Lynette" by Alfred Lord Tennyson
"I make mine avow," said Little John,
"These strok-es liketh well me.
Thou art a bold man and an hardy,
And so thinketh me;
And ere I pass from this place,
Assayed better shalt thou be."
"Robin Hood" by Henry Morley
At length for sleep a weary assay,
On the lone couch wearily!
Rising at midnight again to pray,
Wearily, wearily!
And if through the dark dear eyes looked in,
Sending them far as a thought of sin!
"If I Were A Monk, And If Thou Wert A Nun" by George MacDonald
Through what long heaviness, assayed in what strange fire,
Have these white monks been brought into the way of peace,
Despising the world's wisdom and the world's desire,
Which from the body of this death bring no release?
"Carthusians" by Ernest Christopher Dowson

In news:

Label-Free Assays for High-Throughput Monoclonal Antibody Characterization .
Chimera Biotec develops and markets solutions for bio-analytical assays based on Imperacer®, an innovative assay system for ultra-sensitive analyte detection.
CIT to Distribute Stemina's hESC-Based Toxicity Assay.
Roche, Technoclone Partner to Develop Coagulation Assays.
Proteins and Transcreener® GDP Assay.
Label-Free Protein Assays for Process Development, Kinetic Characterization, Protein Folding, and Crystallization Screens.
Cynvenio Awarded Two SBIR Contracts to Develop Lung Cancer Assays Using CTC Platform.
Brazil Clears Quest's Simplexa Dengue Assay on 3M Integrated Cycler .
Sebia Supports Inserm on Development of Routine Beta Thalassemia Diagnostic Assay .
EC Clears PCR-Electrophoresis Assay Platform and C. Biotechnology from bench to business.
INDIGO Biosciences, Inc, the industry's leading provider of cell-based nuclear receptor reporter assay products and services, has added all nine retinoid receptor assays to the company's significant suite of kits and screening services.
Affymetrix, Leica Forge Pact for Single-Copy RNA ISH Tissue Assay for Research Use.
Roche announced this week the US market availability of the Elecsys HE4 assay, an FDA approved test used in monitoring patients with ovarian cancer.
Using Molecular Assays for Breast Cancer in the Clinic.
The assay can then be used to screen a library of druggable compounds to identify molecules that can displace the fluorescent ligand or modify receptor conformation.
***

In science:

Fieller, E. (1944). A fundamental formula in the statistics of biological assays and some applications.
A Geometric Approach to Confidence Sets for Ratios: Fieller's Theorem, Generalizations, and Bootstrap
SWNT fluorophores in protein assays by many orders of magnitude.
Carbon Nanotubes in Biology and Medicine: in vitro and in vivo Detection, Imaging and Drug Delivery
Oops they did it again! Carbon nanotubes hoax scientists in viability assays.
Carbon Nanotubes in Biology and Medicine: in vitro and in vivo Detection, Imaging and Drug Delivery
The paper reports several experiments using different techniques including northern blotting, yeast two hybrid and electrophoretic mobility shift assays.
ppiTrim: Constructing non-redundant and up-to-date interactomes
The simulations, conducted in the blind with respect to the signal analysis, have yielded agreement with run results to within estimate uncertainties, in the process generating additional radio-assays and construction checks towards their selfimprovement.
***