摘要:
A rotating frame 22 is supported by a stationary frame 21 rotatably by 180 degrees, and in both side plates 22c of the rotating frame 22, there are formed four pairs of guide grooves 25-28 for guiding pallets 9 and slots 32a-32d for moving claw members 30, 31, said slots corresponding to said guide grooves 25-28. On an inner wall of a rear plate 22b of the rotating frame 22, there is provided an up and down movable member 47 which moves downward together with the claw members 30, 31 when the rotating frame 22 is rotated by 180 degrees. Into the first and third guide grooves 25 and 27, there have been previously inserted empty pallets 9 with such a posture that their front surfaces 11 face downward. By moving the claw members 30, 31 along the slots 32b, 32d, the pallets 9 having discs D placed thereon are drawn into the second and fourth guide grooves 26 and 28 such that these pallets 9 are opposed to the upper empty pallets 9. In this condition, when the rotating frame 22 is rotated by 180 degrees, the discs D are turned-over and are placed on the lower empty pallets 9.
摘要:
An automatic disc exchanging apparatus including pallets 19 each of which can support a disc D, storage cabinets 12 which stores said pallets 19, recording and reproducing drives 13 for recording and reproducing information on and from said discs D, and a transporting mechanism for transporting said pallets 19 between said storage cabinets 12 and said recording and reproducing drives, magnetic members 20a are provided in the vicinity of claw portions 19c-19f of the pallet 19. The storage cabinet 12 has an opening 12a through which the pallet 19 can move into and out of the storage cabinet, side walls 12d, 12e having grooves 12b, 12c formed therein for guiding side edges of the pallet 19, and a rear wall 12f which receives an end of the pallet 19, and magnets 20b which attract said magnetic members 20a in the pallet 19 are provided on the rear wall 12f.
摘要:
An apparatus for automatically exchanging a number of record medium cassettes includes a housing, a cassette storing device arranged within said housing for storing the cassettes, recording and reproducing devices arranged within said housing for recording and reproducing information on and from the record medium cassettes, a cassette transporting device arranged within said housing for transporting a plurality of cassette hand over units, a mail box having a cassette supply room and a cassette receipt room, a transport unit for transporting the cassettes between the cassette hand over units and the mail box. By using a plurality of cassette hand over units, the cassettes can be transported efficiently. By using the mail box, a new cassette can be automatically supplied into the housing and an unnecessary cassette can be automatically removed from the housing.
摘要:
A process for production of a radioactive fluorine-labeled organic compound is provided which can improve the yield of radioactive fluorination. Provided is a process in which a compound represented by the following formula (1): (wherein R1 is a straight or branched alkyl chain with 1-10 carbon atoms or an aromatic substituent, R2 is a straight or branched haloalkylsulfonic acid substituent with 1-10 carbon atoms, a straight or branched alkylsulfonic acid substituent with 1-10 carbon atoms, a fluorosulfonic acid substituent or an aromatic sulfonic acid substituent, and R3 is a protective group) is heated under stirring in an inert organic solvent in a presence of a phase transfer catalyst, 18F ions and potassium ions, so as to effect labeling with a radioactive fluorine, wherein the heating temperature is 40-90° C., and the concentration of the phase transfer catalyst in the inert organic solvent is 70 mmol/L or more. Preferably, the molar ratio of the phase transfer catalyst is 0.7 or more relative to the compound of the formula (1), and the concentration of the compound of the formula (1) in the inert organic solvent is 50 mmol/L or more.
摘要:
A method for producing a radioactive diagnostic imaging agent which contains a radioactive halogen-labeled amino acid compound as an effective ingredient and has a composition that can inhibit radiolysis of the effective ingredient, thereby further improving stability, is provided. Disclosed is a method for producing a radioactive diagnostic imaging agent, comprising a solution preparation step of preparing a solution containing a radioactive halogen-labeled amino acid compound, and a dilution step of diluting the solution containing the radioactive fluorine-labeled organic compound in order to adjust radioactive concentration thereof, which further comprises an acid addition step of adding an acid to the solution containing the radioactive fluorine-labeled organic compound, after the solution preparation step and before the dilution step, wherein the acid is added in the acid addition step in an amount sufficient to adjust the pH of the solution resulting from the dilution step to 2.0-5.9, for example, in an amount corresponding to 0.40-2.8 mmol per 1 L of the solution resulting from the dilution step.
摘要:
A process is provided for producing a labeled precursor which is useful for production of a radioactive fluorine-labeled amino acid compound. In the reaction step for introducing a leaving group to a mixture of syn-form and anti-form of FACBC, a base is allowed to present in the reaction system to produce a syn-leaving group adduct, which is unreactive with the base and is highly stable, and an anti-leaving group adduct which can react with the base to form a water-soluble compound. By employing a purification method utilizing such a difference in solubility, the syn-leaving group adduct can be separated selectively. The base may be a linear- or branched-chain primary to tertiary alkylamine having 1 to 10 carbon atoms, a nitrogen-containing heterocyclic compound with 2 to 20 carbon atoms, and a nitrogen-containing hetero aromatic compound with 2 to 20 carbon atoms.
摘要:
Oxidized proteins, which have undergone oxidative modifications, are labeled with labeling reagents and quantified by mass spectrometry. In this process, a first labeling reagent, which is capable of reacting with the oxidized proteins, and a second labeling reagent, which has the same chemical structure as the first labeling reagent and in which at least part of the component atoms is substituted by an isotope of the atom concerned, are employed as the labeling reagents. The oxidized proteins labeled with the first labeling reagent and the oxidized proteins labeled with the second labeling reagent are mixed together and subjected to mass spectrometry, with mixing ratios varied. As the labeling reagents, are raised here 2,4-dinitrophenylhydrazine and 2,4-dinitrophenylhydrazine in which a carbon atom on the phenyl group has been substituted by a stable isotope (13C), for example.
摘要:
It is intended to provide a novel amino acid organic compound which can be used as a labeling precursor compound for radioactive halogen-labeled amino acid compounds including [18F]FACBC, and which prevents methanol from remaining in the radioactive halogen-labeled amino acid compounds produced therefrom. The novel amino acid organic compound is a compound represented by the following formula: wherein n is an integer of 0 or of 1 to 4; R1 is an ethyl, 1-propyl or isopropyl substituent; X is a halogen substituent or a group represented by —OR2; R2 is a straight-chain or branched-chain haloalkylsulfonic acid substituent with one to 10 carbon atoms, trialkylstannyl substituent with 3 to 12 carbon atoms, fluorosulfonic acid substituent or aromatic sulfonic acid substituent; and R3 is a protective group.
摘要翻译:旨在提供一种新的氨基酸有机化合物,其可用作用于放射性卤素标记的氨基酸化合物的标记前体化合物,包括[SUP 18 F] FACBC,并且其防止甲醇残留在 由其制备的放射性卤素标记的氨基酸化合物。 新型氨基酸有机化合物是下式表示的化合物:其中,n为0或1〜4的整数, R 1是乙基,1-丙基或异丙基取代基; X是卤素取代基或由-OR 2表示的基团。 R 2是具有1至10个碳原子的直链或支链卤代烷基磺酸取代基,具有3至12个碳原子的三烷基甲锡烷基取代基,氟代磺酸取代基或芳族磺酸取代基; R 3是保护基。
摘要:
A walk-behind lawn mower in a form that a handle arm is integrally provided toward an obliquely upper back in a rear of a machine, and a loop handle is provided at a rear end of the relevant handle arm with slightly tilting forward, and a driver performs drive operation while walking following the machine that travels by itself at a back of the machine, includes a throttle lever, the throttle lever being able to be drawn together with the handle by being operated by either of right and left hands grasping the handle, in addition, engine rotation frequency being able to be controlled using the amount of drawing, wherein the throttle lever is rotatably provided on the handle arm in an obliquely lower front or obliquely upper back of the handle.
摘要:
A wound-covering agent containing a polymer having a group represented by formula (I) (wherein R1, R2 and R3 are the same or different and each represents hydrogen atom or C1-4 alkyl, and m is an integer of 2 to 4); a wound-covering material containing the preparation; and a method of wound healing which comprises the step of covering the wound of a subject with the wound-covering material to protect the wound.