Zobrazeno 1 - 10
of 1 096
pro vyhledávání: '"Zhang Guo-hua"'
Publikováno v:
Open Life Sciences, Vol 18, Iss 1, Pp e8707-46 (2023)
Ectopic thyroid is a rare malformation induced by a migration defect in the developing gland during embryogenesis. In 90% of cases, the ectopic thyroid is located in the lingual region, whereas it is extremely rare in the abdominal cavity, particular
Externí odkaz:
https://doaj.org/article/a8a760f9fe5646788dbd5c235f980e6a
Publikováno v:
Fenmo yejin jishu, Vol 39, Iss 4, Pp 339-344 (2021)
The pre-reduction molybdenum powders containing minor amount of MoO2 were prepared by the carbothermic reduction of MoO3, using the carbon black as the reducing agent, then the obtained pre-reduction molybdenum powders were deep reduced by hydrogen t
Externí odkaz:
https://doaj.org/article/1143ab105b59411c91f0cde235e68c81
Publikováno v:
Fenmo yejin jishu, Vol 39, Iss 1, Pp 24-32 (2021)
Ultra-fine Mo–Cu composite powders with the different Cu contents (5%, 20%, 40%, mass fraction) were prepared by the method of "carbothermic pre-reduction by insufficient carbon and deep deoxidation by hydrogen". MoO3 and CuO composite oxides were
Externí odkaz:
https://doaj.org/article/afc199c806ae41a89b8046f6c17e5dff
Publikováno v:
High Temperature Materials and Processes, Vol 39, Iss 1, Pp 620-626 (2020)
The morphology evolution from monoclinic molybdenum trioxide (β-MoO3) to orthorhombic molybdenum trioxide (α-MoO3) and quantitative analyses of their mixtures were examined. It was found that the morphology (from spherical to elliptical shape) and
Externí odkaz:
https://doaj.org/article/986a3c29ea464f8f97291452c0aa3576
Publikováno v:
Chemical Industry and Chemical Engineering Quarterly, Vol 25, Iss 1, Pp 21-29 (2019)
Iron matrix cermet reinforced with TiC has been produced by vacuum carbothermal reduction of ilmenite followed by sintering processes. The influences of reduction temperature and carbon mass ratio were discussed in detail. X-Ray diffraction (XRD), el
Externí odkaz:
https://doaj.org/article/479340e5c7ce45df814f25ea20763e4c
Publikováno v:
High Temperature Materials and Processes, Vol 37, Iss 2, Pp 121-125 (2018)
The electrical conductivity of FexO-CaO-SiO2-Al2O3 slags was measured by a four terminal method. The results show that the temperature dependences of total, electronic and ionic conductivity for different compositions obey the Arrhenius law and all o
Externí odkaz:
https://doaj.org/article/858b1e48844641a9a856808b04bece8d
Publikováno v:
High Temperature Materials and Processes, Vol 36, Iss 6, Pp 567-571 (2017)
The knowledge of redox equilibria of iron in multicomponent molten slags is of significant importance to understand the viscosity, electrical conductivity and structure of iron-containing slags. However, the available data of molar ratio of ferric io
Externí odkaz:
https://doaj.org/article/bef4e4df351b45208457743d1b8deaa2
Publikováno v:
Chemical Industry and Chemical Engineering Quarterly, Vol 23, Iss 1, Pp 67-72 (2017)
A new process of producing titanium carbide powder from ilmenite concentrate was put forward. The ilmenite concentrate was reduced by graphite powder at 1500ºC for 6 hours, with the reduction products of TiC, Fe and MgO. The porous reduction prod
Externí odkaz:
https://doaj.org/article/c6ad21be60d348a5b7e4269e894df4db
Publikováno v:
High Temperature Materials and Processes, Vol 35, Iss 7, Pp 635-641 (2016)
A new electrosilicothermic method has been proposed in the present paper to produce Ni–Cr ferroalloy, which can be used for the production of 300 series stainless steel. Based on this new process, the Ni–Si ferroalloy is first produced as the int
Externí odkaz:
https://doaj.org/article/a8a041b1699c448b81903b54646983e5
Publikováno v:
High Temperature Materials and Processes, Vol 35, Iss 3, Pp 309-319 (2016)
The carbothermic reduction experiments were carried out for titanium-bearing blast furnace slag in Panzhihua Iron and Steel Company in argon atmosphere at high temperatures. The effects of reduction temperature, isothermal treatment time and carbon c
Externí odkaz:
https://doaj.org/article/b871575642e944a9b6ee5c9cb517861c