摘要:
Disclosed are a method of determining the amount of the substances or ions contained in an ionic solution or a non-deionized solution by measuring the frequency of a one side barrier-covered crystal oscillator comprising a crystal oscillator 1,2a,2b, a barrier 6 to cover over one of the electrodes 2b of the crystal oscillator through a predetermined insulative space 5 so as to prevent the ionic solution or the non-deionized solution from permeating therethrough and an adsorption film 7 cast on the other electrode 2a of the crystal oscillator, in situ in the state that the one side barrier-covered crystal oscillator is dipped in the ionic solution or the non-deionized solution, and the one side barrier-covered crystal oscillator used therefor.
摘要:
Disclosed are a method of detecting bitter or odor substances, which method comprises adsorbing the bitter or odor substances onto an immobilized bilayer film and directly, quantitatively, separately, and selectively detecting the adsorbed bitter or odor substances, and an apparatus therefor.
摘要:
The present invention relates to a process for producing amino/guanidinothiosulfonic acid, which comprises treating a styrenedivinylbenzene copolymer sulfonate of amino/guanidinoethyl disulfoxide into contact with an alkali, selectively eluting amino/guanidinosulfinic acid, then reacting this product in a non-aqueous solvent in the presence of a base, and passing the reaction product through a weakly acidic cation exchange resin column; in accordance with the present invention, hypotaurine, thiotaurine and the like having a high purity can industrially be produced.
摘要:
A method of evaluating the physioiogical activities and structural characteristics of medicinal substances, which method comprises determining correlations of (A) at least one of kinds of lipid films, physiological activity factors of medicinal substances and structural characteristics of medicinal substances with (B) at least one of amounts of change in frequency, adsorbed amounts or interacted amounts due to adsorption or interaction of the medicinal substances onto the lipid films and lipid film-water partition coefficients, by use of crystal oscillators cast various lipid films respectively, wherein the lipid film-water partition coefficient is used as a parameter in the structural activity correlation technique for medicinal substances.
摘要:
Disclosed are a method of detecting bitter or odor substances, which method comprises adsorbing the bitter or odor substances onto an immobilized bilayer film and directly, quantitatively, separately, and selectively detecting the adsorbed bitter or odor substances, and an apparatus therefor.
摘要:
The present invention concerns an enzyme inhibitor containing the compound represented by the following formula (I) as an effective ingredient : where R represents hydrogen or substituted or not substituted alkyl group, alkenyl group, aryl group or aralkyl group, X represents ORʹ or NRʺR‴, in which Rʹ, Rʺ and R‴ represent respectively hydrogen or substituted or not substituted alkyl group, alkenyl group, aryl group or aralkyl group. The enzyme inhibitor according to the present invention can effectively inhibit aldose reductase, glyoxalase I and reverse transcriptase.
摘要:
The present invention relates to a process for producing amino/guanidinothiosulfonic acid, which comprises treating a styrenedivinylbenzene copolymer sulfonate of amino/guanidinoethyl disulfoxide into contact with an alkali, selectively eluting amino/guanidinosulfinic acid, then reacting this product in a non-aqueous solvent in the presence of a base, and passing the reaction product through a weakly acidic cation exchange resin column; in accordance with the present invention, hypotaurine, thiotaurine and the like having a high purity can industrially be produced.
摘要:
A method of detecting biochemical substances which method comprises chemically binding and immobilizing a probe DNA having a sequence complementary with a sequence specific to a DNA of a biochemical substance onto an electrode of a frequency conversion element, hybridizing the probe DNA with a sample to detect said DNA as a target DNA having a sequence specific to the probe DNA, and measuring frequency changes corresponding to mass changes due to hybridization to detect and identify a hybridized DNA; and a sensor use in the above method.