摘要:
An object of the invention is to provide a rotary type heat treatment device wherein, when a material to be sintered is continuously and stably sintered in a container, the material in the container is stably detected for a long period of time, and a temperature control method for the device. In order to perform temperature control with high accuracy, the inside of a container 6 is divided with screws 18 into temperatures control regions (1) through (6). Heat-resisting protective tubes 20, which are provided on the inner cylindrical wall of the container in such a manner that they are juxtaposed, and complementary thermocouples, are extended to the respective temperature control regions and are bent laterally. The temperature detecting sections 25 of the thermocouples that are led out of the protective pipes 20 are covered with heat-resisting material, and transmit electrical signals outside through a current collecting section consisting of a slip ring and brushes. The shift in temperature measuring position of the thermocouples is positively prevented. In addition, the thermocouples are prevented from being damaged; that is, they are prevented from being brought into contact with the inner cylindrical wall of the container. With the device, the sintering operation can be continuously and stably carried out for a long period of time.
摘要:
The present invention relates to hirudin variants having high anti-thrombin and anti-platelet activity, methods for producing them, and anti-coagulants having said variants as active ingredients.Hirudin variants shown in formula (I) having tyrosine residues or having their hydroxyl group sulfated.Methods for producing hirudin variants by sulfating hydroxyl group of said tyrosine residues, and anti-coagulants having hirudin variants shown in formula (I) as active ingredients.Phe-Glu-A-Ile-Pro-D-Tyr(R) Tyr(R) (I)�In the formula, A represents Glu or Pro, R represents Glu, Tyr (R), Glu-Asp or Glu-Tyr(R), and (R) represents the hydroxy group or its sulfated ester (--O--SO.sub.3 H) of tyrosine residue.!
摘要:
Disclosed is a hydroquinone derivative or a pharmaceutically acceptable salt thereof, the hydroquinone derivative being represented by formula (I): ##STR1## wherein R.sup.1 is a phenyl group which is unsubstituted or substituted with a substituent or substituents each independently selected from the group consisting of a halogen atom, a C1-4 alkyl group and a C1-4 alkoxy group; R.sup.2 is a hydrogen atom or a C1-4 alkyl group; each of R.sup.3 and R.sup.4 is independently a hydrogen atom or a C1-4 alkyl group; R.sup.5 is a hydrogen atom or a C1-4 alkyl group; each of R.sup.6, R.sup.7 and R.sup.8 is independently a hydrogen atom or a C1-4 alkyl group; P is a hydroxyl group; Q is a hydroxyl group, a C1-4 alkoxy group, a C1-18 acyloxy group or an oxo group; P may form together with Q an ether bond; R is a hydroxyl group, a C1-4 alkoxy group, a C1-18 acyloxy group or an oxo group, provided that when one of said Q and said R is an oxo group, the other is also an oxo group; X is a single bond, an --NR.sup.10 --group or a --CH.sub.2 --NR.sup.10 --group in which R.sup.10 is a hydrogen atom or a C1-4 alkyl group; Y is a methylene group or a carbonyl group; and dotted bonds in a six membered ring represent that said six membered ring has the maximum number of double bonds.
摘要:
In a method of growing a gallium nitride related compound semiconductor crystal on a single crystal substrate, the {011} plane or the {101} plane of rare earth group 13 (3B) perovskite is used as the single crystal substrate. As a result, a gallium nitride group semiconductor crystal excellent in crystallinity can be grown epitaxially.
摘要:
A surface acoustic wave device comprises, on a lithium tetraborate substrate 10, a central interdigital transducer 21, 31, and first and second interdigital transducers 22, 23, 32, 33 disposed adjacently on both sides of the central interdigital transducer 21, 31 in a propagation direction of surface acoustic waves, or comprises a first such row of transducers 20 and a second such row of transducers 30 connected in cascade to each other. A sum Nc+Ns of a number of the central interdigital transducer pairs Nc, and a total number of the first and second interdigital transducers pairs Ns is set at a suitable range. The surface acoustic wave device has flat group delay times, relatively wide specific band widths, small insertion losses and large attenuation outside the pass band.
摘要:
Provided is a chimeric HV1/HV3 hirudin analog useful as an anti-coagulant, exhibiting higher anti-thrombin activity and less tendency to cause bleeding than hirudin HV1. Also provided are a method of producing hirudins and hirudin analogs, as well as other proteins, employing secretion vectors, and transformed microorganisms such as E. coli. Pharmaceutical compositions comprising various hirudins or the chimeric HV1/HV3 hirudin analog of the present invention and a pharmaceutically acceptable carrier are also disclosed.
摘要:
A working fluid composition for a compression type refrigerator, comprising:(A) a refrigerant composed of ammonia or at least one hydrofluorocarbon having the number of carbon being not more than 2 and containing no chlorine; and(B) a lubricant for the refrigerator, said lubricant comprising 100 parts by weight of a synthetic oil and 0.5 to 10.0 parts by weight of at least one benzotriazole derivative expressed by the following formula (I). ##STR1## in which R.sup.1 is hydrogen or an alkyl group having the number of carbons being 1-10, and R.sup.2 and R.sup.3 independently indicate an alkyl group having the number of carbons being 4-18.
摘要:
A composite material comprising a bulky substrate of a Y-series 123 metal oxide crystal, and at least one layer provided on a surface of the substrate and formed of a crystal of a Y-series 123 metal oxide. The substrate may be produced by immersing a seed material in a liquid phase which comprises components constituting the metal oxide. The liquid phase contains a solid phase located at a position different from the position at which the seed material contacts the liquid phase. The solid phase provides the liquid phase with solutes which constitute the Y-series 123 metal oxide so that the solutes are transported to the position at which the seed material and the liquid phase contact, thereby permitting the Y-series 123 metal oxide to grow on the seed material as primary crystals and to obtain the bulky substrate. The layer of a Y-series 123 metal oxide may be formed on the substrate by a sputtering method, a vacuum deposition method, a laser abrasion method, a CVD method or a liquid phase epitaxy method.
摘要:
A process for growing a multielement compound single crystal, includes the steps of placing a crucible holding a raw multielement compound of a predetermined set of composition ratios Y in a vertical crystal growing furnace having a heater, melting the raw multielement compound held in the crucible with the heater to produce a melt of the raw multielement compound in the crucible, controlling the output of the heater to grow a multielement compound single crystal of a predetermined set of composition ratios X from the melt so that the melt is solidified successively upwards from part of the melt in contact with the bottom of the crucible, and feeding to the melt as a solute at least one element of the raw multielement compound from above the level of the melt in the crucible so as to maintain the predetermined set of composition ratios X of the solute during growth of the multielement compound single crystal. The process can keep constant the composition of the grown multielement compound single crystal. The process is applicable to the growth of multielement compound semiconductor single crystals and multielement compound oxide single crystals.
摘要:
A Zn-Ni alloy having a high Ni content is used for supplying Ni.sup.2+ and Zn.sup.2+ ions into an acidic plating bath and for supplying Ni and Zn into a hot dip galvanizing bath. This alloy is characterized by being produced by using a flux consisting of a fused-salt former, which forms a salt having a melting temperature of 700.degree. C. or less, and Na.sub.2 B.sub.4 O.sub.7 and occasionaly additionally Na.sub.2 CO.sub.3. By using the inventive alloy, the bath can be quickly prepared, and Zn and Ni can be supplied to the bath without leaving the undissolved residue.
摘要翻译:使用具有高Ni含量的Zn-Ni合金将Ni2 +和Zn2 +离子供应到酸性电镀浴中,并将Ni和Zn供应到热浸镀锌浴中。 该合金的特征在于使用由熔融盐形成剂形成的助熔剂,其形成熔融温度为700℃以下的盐和Na 2 B 4 O 7,另外还含有Na 2 CO 3。 通过使用本发明的合金,可以快速制备浴,并且可以将Zn和Ni供应到浴中而不留下未溶解的残余物。