摘要:
A pneumatic tire has a plurality of circumferential main grooves extending in a tire circumferential direction and a plurality of ribs partitioned by the circumferential main grooves in a tread portion. When viewing a cross-section from a tire meridian direction a contact patch of the center ribs is formed from a smooth curved line forming a convex on an outer side in a tire radial direction and a contact patch of the shoulder rib is formed from a smooth curved line forming a convex on an inner side in the tire radial direction. The curved line of the center ribs and the curved line of the shoulder rib have a point of intersection. A distance between an extended line of the curved line of the center ribs and the curved line of the shoulder rib increases from the point of intersection towards an outer side in a tire width direction.
摘要:
A pneumatic tire has a plurality of circumferential main grooves extending in a tire circumferential direction and a plurality of ribs partitioned by the circumferential main grooves in a tread portion. When viewing a cross-section from a tire meridian direction a contact patch of the center ribs is formed from a smooth curved line forming a convex on an outer side in a tire radial direction and a contact patch of the shoulder rib is formed from a smooth curved line forming a convex on an inner side in the tire radial direction. The curved line of the center ribs and the curved line of the shoulder rib have a point of intersection. A distance between an extended line of the curved line of the center ribs and the curved line of the shoulder rib increases from the point of intersection towards an outer side in a tire width direction.
摘要:
The present invention provides a method for quantifying a peptide compound having a phenylalanine residue at the N-terminal, comprising measuring the content of heat generated by mixing 1) a peptide compound having a phenylalanine residue at the N-terminal, 2) cucurbit[7]uril, and 3) a metal ion in a solution.
摘要:
The present invention provides a method for quantifying a peptide compound having a phenylalanine residue at the N-terminal, comprising measuring the content of heat generated by mixing 1) a peptide compound having a phenylalanine residue at the N-terminal, 2) cucurbit[7]uril, and 3) a metal ion in a solution.
摘要:
The present invention provides a simple, highly sensitive, and highly precise method for determining the absolute configuration of a chiral compound such as a diamine or an amino alcohol.The present invention is directed to a method for determining the absolute configuration of an asymmetric carbon of a chiral compound on the basis of the sign of the Cotton effect by analyzing a solution containing the chiral compound and a porphyrin dimer by circular dichroism spectroscopy.
摘要:
A rubber composition for a tire tread including 100 parts by weight of a diene-based rubber and 5 to 150 parts by weight of carbon black having a nitrogen adsorption specific area N2SA (m2/g) of 80 to 150 and satisfying a relationship between a TINT (%) and dibutyl phthalate absorption DBPA (ml/100 g) of TINT (%)>1.4 DBPA (ml/100 g) and capable of increasing the frictional force without impairing the hysteresis loss.
摘要:
The present invention relates to a reagent for determining the absolute configuration of a chiral compound containing as an active ingredient a metalloporphyrin dimer, wherein the metalloporphyrin dimer has an alkaline-earth metal ion as a central metal and has a carbon chain-crosslinked structure in which at least one of the two porphyrin rings has a substituent bulkier than methyl at least one of the second carbon atoms from a carbon atom bonded to the crosslinking carbon chain along the outer periphery of the porphyrin ring and a method for determining the absolute configuration of an asymmetric carbon atom of the chiral compound using the reagent.
摘要:
The present invention provides an industrially advantageous method for producing an unsaturated carboxylic acid-modified vinyl alcohol polymer, and a gas barrier film obtained by using the same. In summary of the present invention, the present invention is a method for producing a solution containing at least an unsaturated carboxylic acid-modified vinyl alcohol polymer characterized by reacting a vinyl alcohol polymer and an unsaturated carboxylic acid compound in the presence of an acid catalyst soluble in the reaction system or a solid acid catalyst, and a gas barrier film obtained by using the same, and an example of a representative constitution thereof is a method for producing a solution (A) containing an unsaturated carboxylic acid-modified vinyl alcohol polymer (b), the method comprising following two steps of: (1) a reaction step in which the unsaturated carboxylic acid-modified vinyl alcohol polymer (b) is formed by reacting a vinyl alcohol polymer and an unsaturated carboxylic acid compound (a) in the presence of an acid catalyst soluble in the reaction system; and (2) an ion exchange step in which at least the acid catalyst of acidic compounds is removed by an anion exchange resin.
摘要:
A principal object of the present invention is to provide a standard sample that allows accurate testing and calibration of a circular dichroism spectrometer, and which can also be applied to testing and calibration of a UV-visible spectrophotometer. The present invention relates to a standard sample for use in testing and/or calibrating a circular dichroism spectrometer and a UV-visible spectrophotometer, which standard sample comprising: a chlorin dimer represented by Chemical Formula (I): wherein A is CnH2n (n is an integer of 0 or more); and R1, R2, R3R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, and R16 are the same or different, and are each a hydrogen atom, a saturated hydrocarbon group, an aryl group that may be substituted, a heteroaryl group that may be substituted, or an aralkyl group that may be substituted; or a metal chlorin dimer represented by Chemical Formula (II): wherein M2+ is a divalent metal ion; and A, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, and R16 are the same as defined above. Each of the chlorin dimer and the metal chlorin dimer exhibits at least two peaks in an ultraviolet to visible region of a circular dichroism spectrum and a UV-visible absorption spectrum thereof.
摘要翻译:本发明的主要目的是提供一种允许对圆二色性光谱仪进行精确测试和校准的标准样品,其也可应用于UV可见分光光度计的测试和校准。 本发明涉及用于测试和/或校准圆形二色性光谱仪和紫外 - 可见分光光度计的标准样品,该标准样品包含:由化学式(I)表示的二氢卟酚二聚体:其中A是C n H 2n(n是 0以上的整数); R1,R2,R3R4,R5,R6,R7,R8,R9,R10,R11,R12,R13,R14,R15和R16可以相同或不同,分别为氢原子,饱和烃基, 可被取代的芳基,可被取代的杂芳基或可被取代的芳烷基; 或由化学式(II)表示的金属二氢卟酚二聚体:其中M2 +是二价金属离子; 并且A,R1,R2,R3,R4,R5,R6,R7,R8,R9,R10,R11,R12,R13,R14,R15和R16与上述定义相同。 二氢卟酚二聚物和金属二氢卟酚二聚体中的每一个在圆二色性光谱的紫外到可见区和其可见光吸收光谱中表现出至少两个峰。
摘要:
The absolute configuration of a chiral compound is determined by (i) coordinating the chiral compound to a metalloporphyrin having a carbon chain-crosslinked porphyrin dimer structure in which one of the two porphyrin rings has at least one ethyl or substituent bulkier than ethyl at at least one of the second peripheral carbon atoms from the carbon atom at the carbon chain crosslink site, and (ii) analyzing the resultant coordination compound by circular dichroism spectrophotometry to determine the absolute configuration of the asymmetric carbon based on the sign of the Cotton effect. The chiral compound has an asymmetric carbon bonded to a basic group capable of coordinating to the metal of the other porphyrin ring of the metalloporphyrin dimer or an asymmetric carbon atom adjacent to the carbon atom bonded to the basic group.