Abstract: A trackway toy featuring a powered vehicle for movement along sections of track and action stations which may be in the form of an elevator and a crane in the vicinity of the trackway and provided with a movable structure for attracting the attention of the child, and a mechanism for stopping the vehicle at the action station and for using the power of the vehicle to activate movement of the movable structure of the action station.

Abstract: An autoradiographic gene-screening method employing a hybridization process, which comprises:(1) a step of transferring at least a portion of nucleic acids, fragments thereof or derivatives thereof resolved on a medium onto a transfer support to fix them thereonto;(2) a step of hybridizing the nucleic acids, fragments thereof or derivatives thereof fixed onto said transfer support with radioactively labeled probes; and(3) a step of obtaining locational information on the radioactively labeled substances on said transfer support, which comprises placing said transfer support having been subjected to the hybridization and a stimulable phosphor sheet in layers for a given period of time to cause said sheet to absorb at least a portion of radiation energy emitted by the radioactively labeled substances on said transfer support, exciting said stimulable phosphor sheet with an electromagnetic wave to release the radiation energy stored in said sheet as stimulated emission, and detecting the stimulated emission.

Abstract: An autoradiographic process for obtaining information on one or two dimensional location of radioactively labeled substances contained in a sample selected from the group consisting of tissue of an organism and a medium containing tissue of an organism and/or substances such as DNA originating from an organism,which comprises:placing said sample and a stimulable phosphor sheet having a phosphor layer comprising a stimulable phosphor dispersed in a binder together in layers for a certain period to cause said phosphor sheet to absorb at least a portion of radiation energy emitted by the radioactively labeled substances in said sample;scanning said phosphor sheet with an electromagnetic wave to release at least a portion of radiation energy stored in said phosphor sheet as stimulated emission; anddetecting the stimulated emission to obtain locational information on the radioactively labeled substances in the sample.

Abstract: A cellulose triacetate film excellent in both of the tear strength and the folding endurance can be obtained by casting a cellulose triacetate dope using a solvent mixture of methylene chloride with the other solvent in a ratio of 13 to 25 wt. % of the total solvent weight on a support of which the surface temperature is kept lower than 10.degree. C., and drying with controlling the drying conditions so that the content of volatile components in the film and the film surface temperature enter a particular region or so that the content of volatile components in the film and the shrinkage percentage of the film in the cross direction enter in a particular region. The film thus obtained is also excellent in flatness.

Abstract: In a medium for electrophoresis comprising a polyacrylamide gel formed by crosslinking polymerization of an acrylamide compound and a crosslinking agent in the presence of water, and a modifier, the improvement in which the medium contains a water-soluble polymer and agarose.

Abstract: A method of detecting radioactive substance in a liquid sample which comprises steps of:(1) supplying a radiation-measuring instrument containing a stimulable phosphor with the liquid sample continuously or intermittently;(2) keeping said measuring instrument in contact with the liquid sample for a given period of time to cause the instrument to absorb at least a portion of radiation energy emitted by the radioactive substance in said liquid sample; and(3) irradiating said measuring instrument with an electromagnetic wave to release the radiation energy stored in the instrument as stimulated emission, and photoelectrically detecting the stimulated emission to measure radioactivity of said liquid sample sequentially.The method is particularly useful when employed in conjunction with liquid chromatography.

Abstract: A radiation-measuring instrument which is in the form of a continuous-length material containing a stimulable phosphor therein to measure intensity of a radiation emitted by a liquid sample containing a radioactive substance.

Abstract: A signal processing method in autoradiography for determination of the base sequence of DNA or a DNA fragment, employing groups of radioactively labeled base specific cleavage products or mixtures thereof obtained by specifically cleaving the DNA or DNA fragment labeled with a radioactive element and resolved one-dimensionally in parallel relation to each other to form resolved rows on a support medium. An autograph is obtained having locational information on groups of radioactively labeled cleavage products contained in the rows on the support medium. An electrical digital signal corresponding to the autoradiograph are generated by recording and reproducing a radiation image stored in a stimulable phosphor sheet. Sampling points in each resolved row of the digital signal are next detected. Reference sampling points are then determined in a plurality of reference rows which are either directly provided on the support medium and/or synthesized from certain resolved rows.

Abstract: A sheet-form radiation-measuring instrument for measuring radioactivity of a liquid sample, having a liquid-retaining member capable of retaining a liquid sample containing a radioactive substance, a transparent protective film of synthetic polymer material and a stimulable phosphor member containing a stimulable phosphor therein. The instrument may be in an integrate structure or a separate structure.

Abstract: An autoradiographic gene-screening method employing a hybridization process, which comprises:(1) a step of transferring a portion of genetic clones cultured on a culture medium onto a filter to fix them thereonto;(2) a step of hybridizing the genes of said clones fixed onto said filter with radioactively labeled probes;(3) a step of obtaining two dimensional information on the location of the radioactively labeled substances on the filter which comprises placing said filter having been subjected to the hybridization and a stimulable phosphor sheet in layers for a given period of time to cause said stimulable phosphor sheet to absorb at least a portion of radiation energy emitted by the radioactively labeled substances on the filter, exciting said sheet with an electromagnetic wave to release the radiation energy stored in said sheet as stimulated emission, and detecting the stimulated emission to obtain a locational information on the radioactively labeled substances on the filter; and(4) a step recovering th

Abstract: A photosensitive material package unit provided with an exposure function that has been preloaded with a photosensitive material having on a support a photographic layer having at least one silver halide emulsion layer and a back layer on the side opposite to the photographic layer is provided.

Abstract: A signal processing method in autoradiography for determination of the base sequence of DNA or a DNA fragment, employing groups of radioactively labeled base specific cleavage products or mixtures thereof obtained by specifically cleaving the DNA or DNA fragment labeled with a radioactive element and resolved one-dimensionally in parallel relation to each other to form resolved rows on a support medium. An autograph is obtained having locational information on groups of radioactively labeled cleavage products contained in the rows on the support medium. An electrical digital signal corresponding to the autoradiograph is then generated by recording and reproducing from a stimulable phosphor sheet the radiation energy stored therein. Sampling points in each resolved row of the digital signal are next detected. Reference sampling points are then determined in a plurality of reference rows which are either directly provided on the support medium and/or synthesized from certain resolved rows.

Abstract: A signal processing method in autoradiography for obtaining information on the one dimensional location of radioactively labeled substances in a sample where the substances of the sample are distributed in at least one row on a support medium where the information is in the form of symbols, numerals or a combination thereof.

Abstract: A signal processing method in autoradiography employing a stimulable phosphor sheet for the purpose of obtaining information on the one dimensional location of radioactively labeled substances distributed in at least one dimensional direction on a support medium, in the form of a symbol, numeral or combination thereof, including the steps of:(1) determining a one dimensional scanning line for signal processing; and(2) detecting sampling points on said scanning line,the process being applied to digital signals corresponding to an autoradiograph having the locational information on the radioactively labeled substances, the digital signals being obtained from stimulable phosphor sheet.

Abstract: A process of manufacturing an element for electrophotresis which comprises steps of: sticking a spacer continuously to both side portions of a support web which is rolled back continuously from the rolled condition; casting on said support a solution for forming a medium membrane for electrophoresis; subjecting the support to hardening treatment to form a medium membrane; cutting off a portion of the medium membrane and support web; and sticking a cover sheet onto the medium membrane. An apparatus advantageously employable for performing the above process is disclosed.

Abstract: A hardening method for gelatin which comprises using as a hardening agent a compound represented by formula (I) ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 each represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group; or two of said R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are combined with each other to form a ring (1); or 3 or more of said R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are combined with each other to form a condensed ring (2); X represents a group capable of being released when the compound shown by formula (I) reacts with a nucleophilic reagent; Y.sup..crclbar. represents an anion; or Y.sup..crclbar. is combined with one of X, R.sup.1, R.sup.2, R.sup.3, and R.sup.4, ring (1), or ring (2) to form an anionic portion of an intramolecular salt.

Abstract: A signal detecting method in autoradiography, which is applied to an autoradiography having locational information on radioactively labeled substances such as radioactively labeled biopolymers distributed one-dimensionally, being recorded on a stimulable phosphor sheet as a radiation energy-stored image, which comprises steps of:(1) preliminarily scanning a part of the stimulable phosphor sheet with an electromagnetic wave to release a portion of the radiation energy as stimulated emission and detecting the stimulated emission to give an electric signal, to which a signal processing is applied, to determine one-dimensional distribution direction of the radioactively labeled substances; and(2) finally scanning the stimulable phosphor sheet with an electromagnetic wave along said one-dimensional distribution direction to release the radiation energy as stimulated emission and detecting the stimulated emission, to obtain the locational information on the radioactively labeled substances as a digital signal.