摘要:
A method of heat treatment for an efficient forming of two-layered oxide film on the inside surface of a Ni-base alloy tube. The oxide film suppresses the Ni release in a high-temperature water environment.At least two gas supplying devices are provided on the outlet side of a continuous heat treatment furnace; or one gas supplying device is provided respectively on the outlet side and the inlet side thereof. The tube is put into the furnace while supplying an atmospheric gas into the tube from the front end of the tube moving direction with one of these gas supplying devices and a gas introducing pipe, which is arranged inside the furnace, and this tube is maintained at 650 to 1200° C. for 1 to 1200 minutes. The atmospheric gas consists of hydrogen or a mixture of hydrogen and argon, whose dew point is in a range of from −60° C. to +20° C. After the front end of the Ni-base alloy tube reaches the outlet side of the furnace, the supply of atmospheric gas into the tube is switched to the supply from other gas supplying device. The operations are repeated.
摘要:
(1) A nickel-base alloy product having, on the surface thereof, an oxide film comprising at least two layers, namely a first layer mainly composed of Cr2O3 and having a chromium content of not less than 50% relative to the total amount of metal elements and a second layer occurring outside the first layer and mainly composed of MnCr2O4, wherein the grain size of Cr2O3 crystals in the first layer is 50 to 1,000 nm and the total oxide film thickness is 180 to 1,500 nm. (2) A method of producing the nickel-base alloy product as specified above under (1) which comprises subjecting a nickel-base alloy product to oxide film formation treatment by maintaining the same at a temperature of 650 to 1,200° C. in a hydrogen atmosphere or hydrogen-argon mixed atmosphere showing a dew point of −60° C. to +20° C. for 1 to 1,200 minutes. The product mentioned above (1) allows only a very low level of Ni release in a high-temperature water environment over a long period of time and is particularly suited for use as a nuclear reactor member.
摘要翻译:(1)一种镍基合金制品,其表面上具有包含至少两层的氧化物膜,即主要由Cr 2 O 3组成的第一层,铬含量不低于50% 金属元素和第二层,其主要由MnCr 2 O 4构成,其中第一层中的Cr 2 O 3晶体的晶粒尺寸为50〜1000nm,氧化膜的总厚度为180〜1500nm。(2) (1)所述的镍基合金制品的制造方法,其特征在于,在氢气氛中,在氢气氛中,在氢气氛中,在650〜1200℃的温度下,使镍基合金制品进行氧化膜形成处理, 氩气混合气氛,露点为-60°C至+ 20°C,持续1〜1,200分钟。上述(1)所述的产品在高温水环境中仅允许非常低的Ni释放量 很长一段时间,尤其适合 用作核反应堆构件。
摘要:
A method for manufacturing a Ni-based alloy article which elutes little Ni even when used in a high-temperature water environment for a long period comprises heating the Ni-based alloy in a carbon dioxide-containing atmosphere for a set period of time at an elevated temperature to form an oxide film comprising chromium oxide on a surface thereof. Using carbon dioxide as an oxidizing gas produces an oxide film of generally uniform thickness along a length of the article being treated so that resistance to nickel elution is more uniform over the entire article.
摘要:
A method for manufacturing a Ni-based alloy article which elutes little Ni even when used in a high-temperature water environment for a long period comprises heating the Ni-based alloy in a carbon dioxide-containing atmosphere for a set period of time at an elevated temperature to form an oxide film comprising chromium oxide on a surface thereof. Using carbon dioxide as an oxidizing gas produces an oxide film of generally uniform thickness along a length of the article being treated so that resistance to nickel elution is more uniform over the entire article.
摘要:
A method of treating metabolic bone diseases comprising using a pharmaceutical composition which comprises as an active ingredient IL-1 receptor, a soluble fragment consisting of an extracellular domain of IL-1R or a fragment thereof derived from mammals. The composition has a bone resorption inhibiting activity and is useful for the therapy and prophylaxis of metabolic bone diseases.
摘要:
A novel biphenyl derivative of the formula: ##STR1## wherein Ring A is a substituted or unsubstituted sulfur-containing or oxygen-containing heteromonocyclic ring; Ring B is a ring of the formula: ##STR2## each of R.sup.1 to R.sup.3 is hydrogen atom, a halogen atom or a lower alkoxy group, or R.sup.1 is hydrogen atom, and R.sup.2 and R.sup.3 are combined together to form a lower alkylenedioxy group; R.sup.4 is a lower alkyl group which may have a substituent selected from a lower alkoxy group and a lower alkoxycarbonyl group; Y is methylene group or carbonyl group, and a pharmaceutically acceptable salt thereof are disclosed. Said derivative and a pharmaceutically acceptable salt thereof are useful as a therapeutic or prophylactic agent for hepatic diseases.
摘要:
The present invention provides a highly sensitive immunoassay system for estrogens, which utilizes as a labeled compound a biotinylated estradiol derivative of the formula (1) wherein one of R1 and R2 is hydrogen and the other is a group represented by wherein R3s are the same or different and represent an arginine residue or a lysine residue, x is 0 or 1, y is an integer from 1 to 5, and z is an integer from 1 to 3.
摘要:
The object is to provide a promoting agent for bone formation, a therapeutic method for bone formation and a process for preparing a promoting agent for bone formation. A promoting agent for bone formation which comprises at least one of kistrin, echstatin, a peptide or polypeptide containing the amino acid sequence ArgGlyAsp in the molecule such as a peptide represented by Gly-Arg-Gly-Asp-Ser or a compound represented by the following general formula (IX) and so on, as well as a biologically acceptable salt thereof wherein R16 represents —N(R20)2 (R20 represents a hydrogen atom or a C1-C4 alkyl group), R17 represents a hydrogen atom or a C1-C4 alkyl group, R18 represents a hydrogen atom, a C1-C4 alkyl group and so on, R19 represents OH, NH2 and so on, Y represents —NH—, —O— or a direct bond, a represents 1-3, b represents 1 or 2, c represents 0 or 1 and d represents 0 or 1.
摘要:
Compounds useful as preventive and therapeutic agents for bone and cartilage diseases; and drug compositions containing the same. The compounds are polyhydroxyphenol derivatives of general formula (I) and quinione analogues derived therefrom (wherein R1 is alkyl, optionally substituted benzyl or optionally substituted aryl; R2 is hydrogen, alkyl, alkenyl or optionally substituted benzyl; R3 is hydrogen, alkyl, alkenyl, optionally substituted benzyl, hydroxyl, alkoxy, alkenyloxy or optionally substituted benzyloxy; R4 is hydrogen, alkyl, alkenyl, optionally substituted benzyl or hydroxyl; and R5 and R6 are each independently hydrogen, alkyl, alkenyl or optionally substituted benzyl). The polyhydroxyphenol derivatives and the quinone analogues exhibit a potent inhibitory activity against bone resorption and are useful as preventive and therapeutic agents for bone and cartilage diseases.
摘要翻译:用作骨和软骨疾病的预防和治疗剂的化合物; 和含有它们的药物组合物。 化合物是通式(I)的多羟基苯酚衍生物和由其衍生的醌基类似物(其中R1是烷基,任意取代的苄基或任意取代的芳基; R 2是氢,烷基,烯基或任选取代的苄基; R 3是氢,烷基,链烯基, 任选取代的苄基,羟基,烷氧基,烯氧基或任选取代的苄氧基; R 4是氢,烷基,烯基,任选取代的苄基或羟基;且R 5和R 6各自独立地为氢,烷基,烯基或任选取代的苄基。 多羟基苯酚衍生物和醌类似物表现出对骨吸收的有效抑制活性,并且可用作骨和软骨疾病的预防和治疗剂。
摘要:
An anti-osteopathic composition comprising as an active ingredient a compound represented by the following formula (I), (II) or (III): ##STR1## which is useful for therapeutic and prophylactic treatment of osteopathia such as osteoporosis and bone fracture.