Abstract: An information processing apparatus (2000) detects an abnormal region (30) from a moving image frame (14). The abnormal region (30) is a region that is estimated to represent an abnormal part inside a body of a subject. The information processing apparatus (2000) generates and outputs output information based on the number of detected abnormal regions (30).

Abstract: An aqueous enteric coating liquid having a good dispersion stability and a good resistance to gastric juice comprising an alkali metal salt of an acid having a acid dissociation constant of at least 3 at 25.degree. C. and a water-insoluble oxycarboxylic acid type cellulose derivative dispersed in water or a mixture of water and at most 20% by weight of a lower alcohol.

Abstract: A process for preparing carboxymethyl ethyl cellulose (CMEC) suitable for enteric coating which comprises (1) adding an alkali metal hydroxide and water to a substantially water-immiscible organic solvent dispersion of carboxymethyl cellulose (CMC) and reacting CMC with an ethyl halide in the presence of a phase transfer catalyst, (2) dissolving the produced CMEC in an aqueous solution of a basic compound selected from the group consisting of ammonia, a water-soluble amine and an alkali metal hydroxide and subjecting the resulting solution to depolymerization in the presence of a peroxide, (3) neutralizing the resulting basic reaction mixture with an acidic substance in the presence of a lower alkyl alcohol or acetone to form a hydrogel of the depolymerized CMEC, subjecting the hydrogel to dehydration with agitation, isolating the depolymerized CMEC and washing with water, and (4) drying the wet depolymerized CMEC without pulverization or after pulverizing in the wet state to particles having an average parti

Abstract: A process for preparing a cellulose ether which comprises reacting celluloses untreated or treated with an aqueous solution of alkali hydroxide with an etherifying agent in the presence of an aqueous solution of alkali hydroxide, an organic solvent being substantially immiscible with water and capable of dissolving the etherifying agent and a quaternary salt having the following general formula: ##STR1## wherein M is nitrogen atom or phosphorus atom, R.sup.1, R.sup.2, R.sub.3 and R.sub.4 are independently an organic group and X.sup.- is an anion. According to the process, the etherification is carried out uniformly to give a cellulose ether of a high quality in which the substituents are uniformly distributed.