On Hearing Tests

Necessity for consideration of present hearing tests.—Testing of tonal limits considered; present tests accepted as satisfactory. Anomalous results of comparison of perception of the monochord by air and bone conduction.—The Rinne, Schwabach, Weber and Bing tests destructively criticized.—The Gellé and galvanic cochlear tests; Fraser's modification of Gellé's test.—Suggestions for the improvement of testing.—The “absolute bone conduction” test affords an absolute index of the perceptive component of hearing (nerve function).—Mechanism of transmission of sound waves through the skull (bone “conduction”).—Quantitative determination of hearing power; results expressed on a distance basis are to be preferred; use of tuning forks in obtaining such results.—The mathematics underlying this use of tuning forks.—Accurate quantitative estimation of nerve function (the perceptive component of hearing).

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Qualitative and quantitative determination of phytochemicals from flowers of Spanish Cherry tree

Journal of Drug Delivery and Therapeutics ◽

10.22270/jddt.v8i6-s.2108 ◽

2018 ◽

Vol 8 (6-s) ◽

pp. 182-186

Author(s):

Vineeta Singh ◽

Anita Rao ◽

Shipra Pandey ◽

Vaibhav Sharan Pandey ◽

Vageshwari Vageshwari ◽

...

Keyword(s):

Quantitative Determination ◽

Quantitative Estimation ◽

Standard Procedure ◽

Tannin Content ◽

Cherry Tree ◽

Qualitative And Quantitative ◽

Standard Curve ◽

Soxhlet Apparatus ◽

Percentage Yield

The present enquiry was intended to analyze the phytochemicals qualitatively and quantitatively from flowers of Spanish cherry tree. Flower powder was extracted using polar and nonpolar solvent by soxhlet apparatus. Percentage yield of crude extracts was determined and further the extracts were subjected to analyze the phytochemicals qualitatively and quantitatively by standard procedure. Qualitative analysis showed the absence of alkaloids while presences of tannins, saponins, terpenoids, steroids, glycosides, flavonoids, phenols. Quantitative estimation of phytochemicals was determined using standard curve. Result revealed that the tannin content was 4.3±0.01 (mgTAE /gm), flavanols content was 0.28±0.05 (mgQE/gm). Saponins content was 3.6±0.7 % and terpenoids content was 1.47±0.37 %. A well conducted studies on phytochemicals revealed that they are vital for humans because they provide protection against a variety of ailments. Therefore, the present study is aimed to analyze phytochemicals qualitatively and quantitatively. Keywords: Phytochemicals, Tannins, Saponins, Flavanols, Terpenoids

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QUANTITATIVE DETERMINATION OF SUCCINIC DEHYDROGENASE AS AN ESTIMATE OF THE FUNCTIONAL STATE OF THE RAT SEMINAL VESICLE

Acta Endocrinologica ◽

10.1530/acta.0.0390129 ◽

1962 ◽

Vol 39 (1) ◽

pp. 129-134

Author(s):

Antti Telkkä ◽

A. Kivikoski ◽

Väinö K. Hopsu

Keyword(s):

Quantitative Determination ◽

Functional State ◽

Quantitative Estimation ◽

Succinic Dehydrogenase ◽

Seminal Vesicles ◽

The Other ◽

Succinic Dehydrogenase Activity ◽

Testosterone Treatment ◽

Rat Seminal Vesicle

ABSTRACT The seminal vesicles of the rat were stimulated by testosterone-treatment or depressed by castration. The activity of the gland was demonstrated using histoquantitative methods and by quantitative determination of the succinic dehydrogenase activity in the vesicles. There was a good correlation between the seven different variables reflecting the functional state of the vesicle. Quantitative estimation of succinic dehydrogenase of the vesicle seemed to be superior to the other methods because of its greater sensitivity.

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A Micromethod for Rapid Quantitative Determination of Phosphonate Phosphorus

Zeitschrift für Naturforschung C ◽

10.1515/znc-1984-3-408 ◽

1984 ◽

Vol 39 (3-4) ◽

pp. 249-251 ◽

Cited By ~ 11

Author(s):

Vassilios M. Kapoulas ◽

Sofia K. Mastronicolis ◽

Ibrahim C. Nakhel ◽

Helen J. Stavrakakis

Keyword(s):

Sulfuric Acid ◽

Quantitative Determination ◽

Rapid Method ◽

Total Phosphorus ◽

Perchloric Acid ◽

Quantitative Estimation ◽

The Other ◽

The Difference

A rapid method for initial quantitative estimation of the phosphate present in compound containing a carbon-phosphorus bond is described. Two phosphorus assays are employed. One assay is for total phosphorus, which can be determined by digesting with perchloric acid and the other assay is for total non phosphonate phosphorus which can be determined by digesting with sulfuric acid simultaneously. The difference between total phosphorus and the non phosphonate phosphorus determined represents the amount of phosphorus present in a carbon-phosphorus linkage in a crude phospholipids sample

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Quantitative estimation of trimazolin hydrochloride in pharmaceutical preparation by RP-HPLC method

Hemijska industrija ◽

10.2298/hemind0902087s ◽

2009 ◽

Vol 63 (2) ◽

pp. 87-93 ◽

Cited By ~ 2

Author(s):

Ivana Savic ◽

Goran Nikolic ◽

Vladimir Bankovic ◽

Ivan Savic

Keyword(s):

Phase Composition ◽

Quantitative Determination ◽

Mobile Phase ◽

Quantitative Estimation ◽

Pharmaceutical Preparation ◽

Hplc Method ◽

Mobile Phase Composition ◽

Rp Hplc ◽

Ich Guidelines

A sensitive and selective RP-HPLC method was developed and validated for the quantitative determination of trimazolin hydrochloride in nasal drops formulations. The mobile phase composition was water-acetonitrile (50:50, v/v) and the UV detection was carried out at 270 nm. Linearity range in the concentration range of 10 to 110 ?g cm-3. The method was tested and validated for various parameters according to ICH guidelines. The detection and quantization limits were found to be 1.45 and 4.8 ?g cm-3, respectively. The results demonstrated that the procedure for estimation of trimazolin hydrochloride in nasal drops formulations was accurate, precise and reproducible.

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FACTORS RELATING TO THE QUANTITATIVE ESTIMATION OF LOW LEVELS OF DIPHTHERIA ANTITOXIN BY THE RABBIT SKIN TEST

Canadian Journal of Research ◽

10.1139/cjr49e-001 ◽

1949 ◽

Vol 27e (1) ◽

pp. 1-3

Author(s):

L. Greenberg ◽

J. Gibbard

Keyword(s):

Quantitative Determination ◽

Skin Test ◽

Room Temperature ◽

Quantitative Estimation ◽

Simple Method ◽

Skin Reactions ◽

Rabbit Skin ◽

Diphtheria Antitoxin ◽

Low Levels

A simple method for the quantitative determination of small amounts of diphtheria antitoxin is presented. Toxin of known strength is mixed with various dilutions of serum. These are held at room temperature for two hours and 0.1 cc. of each dilution is injected intracutaneously into the back of a suitably prepared rabbit. The resulting skin reactions are compared with reactions obtained with control mixtures, containing known amounts of antitoxin, injected at the same time. Between 200 and 300 tests may be performed on the back of a single rabbit.

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A METHOD FOR THE QUANTITATIVE DETERMINATION OF BACTERIOPHAGE

The Journal of General Physiology ◽

10.1085/jgp.13.5.557 ◽

1930 ◽

Vol 13 (5) ◽

pp. 557-564 ◽

Cited By ~ 15

Author(s):

Albert P. Krueger

Keyword(s):

Quantitative Determination ◽

Quantitative Estimation ◽

Quantitative Relationship ◽

End Point ◽

Time Required

1. In the case of the staphylococcus and antistaphylococcus phage studied, with the total volume of the mixture being kept constant, there exists a definite quantitative relationship between CPhage and the time required to reduce a particular concentration of growing phage-susceptible bacteria to an arbitrary turbidity end-point. 2. This relationship furnishes a basis for the quantitative estimation of bacteriophage. A method is described having an accuracy within ±5 per cent.

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Studies on Deltamethrin Treated Mosquito Net

E-Journal of Chemistry ◽

10.1155/2010/272051 ◽

2010 ◽

Vol 7 (s1) ◽

pp. S15-S22 ◽

Cited By ~ 2

Author(s):

A. Tyagi ◽

T. Sharma ◽

M. Singh ◽

K. Fatma ◽

V. S. Rawat ◽

...

Keyword(s):

Quantitative Determination ◽

Quantitative Estimation ◽

Complete Information ◽

Chromatographic Technique ◽

Mosquito Repellent ◽

Mosquito Net ◽

Surface Extraction ◽

Mosquito Nets ◽

Method Of Extraction

The focus of the present studies is to characterize mosquito net for its material of construction and qualitative as well as quantitative determination of the mosquito repellent chemical deltamethrin present in it. Further, the assessment of the mode of incorporation of the deltamethrin in the fabric of the mosquito net was done,i.e. whether the deltamethrin was present as a coating on the surface of the mosquito net or it was incorporated in the bulk of the material of construction of the mosquito net. The chromatographic technique has been used for quantitative estimation of deltamethrin extracted by two different solvents from the net. It has been found that the determination of deltamethrin in mosquito nets can vary with the method of extraction used. While extraction with acetone is good enough for estimating the chemical adsorbed on the surface, extraction with xylene provides complete information about the chemical present even in the bulk of the material.

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