Abstract: A measurement system including a sensor and a measurement device including an insertion port for the sensor, wherein the measurement device measures a measurement target component at the sensor and includes plural terminals contacting the sensor, and the terminals slide on a contact surface of the sensor, the contact surface has a first electrode group on a rear end side and a second electrode group on a distal end side, the plural terminals receive static frictional forces from the contact surface and include a first terminal group contacting the first electrode group on a side closer to the insertion port than a side on which a second terminal group contacting the second electrode group, and a sum of static frictional forces that the first terminal group receives from the contact surface is smaller than a sum of static frictional forces that the second terminal group receives from the contact surface.

Abstract: Phenoxyacetic acid derivatives of the formula: wherein R1, R2, Xn and A are as defined herein, and a process for preparing the derivatives. The derivatives are used as herbicides.

Abstract: The invention relates to 1,3-oxazin-4-one derivatives of formula (I): ##STR1## and to their use as herbicides.

Abstract: The invention relates to compounds of formula (I): and to their use as herbicides, and to intermediates useful in their preparation.

Abstract: This invention provides 1,3-oxazin-4-one derivatives represented by following general formula (I): ##STR1## in which R.sup.1 represents a phenyl group which may be substituted; R.sup.2 represents a hydrogen atom or a lower alkyl group; R.sup.3 represents a hydrogen atom, a lower alkyl group, an aralkyl group or a phenyl group which may be substituted; R.sup.4 and R.sup.5 each independently represent a lower alkyl group; and W represents an oxygen atom or a group represented by the formula --N(R.sup.6)-- in which R.sup.6 represents a hydrogen atom, a lower alkyl group, a lower alkenyl group or a lower alkynyl group. There are also provided herbicidal compositions containing the derivatives and intermediates for preparing them. The compounds according to the present invention exhibit strong herbicidal activities and thus they are useful as active ingredients of agricultural chemicals.

Abstract: The invention relates to compounds of formula (I): ##STR1## and to their use as herbicides.

Abstract: Novel 1,3-oxazin-4-one derivatives of the formula ##STR1## wherein R.sup.1 to R.sup.5 are hydrocarbyl radicals which are optionally substituted, and herbicidal compositions comprising the same as active ingredients and their use in controlling the growth of weeds. The compounds can be produced by reacting substituted 1,3-dioxin-4-one derivatives and N-methylene-alkylamine.

Abstract: Novel 1,3-oxazin-4-one derivatives of the formula ##STR1## wherein R.sup.1 to R.sup.5 are hydrocarbyl radicals which are optionally substituted, and herbicidal compositions comprising the same as active ingredients and their use in controlling the growth of weeds. The compounds can be produced by reacting substituted 1,3-dioxin-4-one derivatives and N-methylene-alkylamine.

Abstract: 1,3-Oxazin-4-one derivatives represented by general formula (I) ##STR1## wherein R.sup.1 is a lower alkyl group, a lower alkenyl group, an aryl group which may be substituted, or an aralkyl group which may be substituted;R.sup.2 is a hydrogen atom or a lower alkyl group;R.sup.3 is a lower alkyl group, an aryl group which may be substituted, or an aralkyl group which may be substituted; andR.sup.4 and R.sup.5, independently, each is a lower alkyl group, or R.sup.4 and R.sup.5, taken together with the carbon atom to which they are bonded, combine to form a 3- to 8-membered carbocyclic group which may have a branch of a lower alkyl group. These compounds have broad herbicidal spectra and potent herbicidal activities and in addition high safety to useful crops, so that they are useful as herbicides.