Abstract: An ion-modified microwave dielectric ceramic is provided and a chemical formula thereof is Zn0.15Nb0.3[Ti1-x(W1/3Zr1/2)x]0.55O2. In the chemical formula, x is in a range of 0.01 to 0.03. The ion-modified microwave dielectric ceramic includes the following components in parts by weight: 12.58-12.67 parts of ZnO, 41.11-41.39 parts of TiO2, 43.93-45.14 parts of Nb2O5, 0.44-1.31 parts of WO3, and 0.35-1.05 parts of ZrO2. A preparation method of the ion-modified microwave dielectric ceramic can be applied to different industrial requirements, such as electronic components, communication equipment, and microwave components; and the obtained ion-modified microwave dielectric ceramic expands a practical value of a Zn0.15Nb0.3Ti0.55O2 series microwave dielectric ceramic in electronic ceramic manufacturing.

Abstract: An ion-modified microwave dielectric ceramic is provided and a chemical formula thereof is Zn0.15Nb0.3[Ti1-x(W1/3Zr1/2)x]0.55O2. In the chemical formula, x is in a range of 0.01 to 0.03. The ion-modified microwave dielectric ceramic includes the following components in parts by weight: 12.58-12.67 parts of ZnO, 41.11-41.39 parts of TiO2, 43.93-45.14 parts of Nb2O5, 0.44-1.31 parts of WO3, and 0.35-1.05 parts of ZrO2. A preparation method of the ion-modified microwave dielectric ceramic can be applied to different industrial requirements, such as electronic components, communication equipment, and microwave components; and the obtained ion-modified microwave dielectric ceramic expands a practical value of a Zn0.15Nb0.3Ti0.55O2 series microwave dielectric ceramic in electronic ceramic manufacturing.

Abstract: The present invention relates to a Si-containing high-strength and low-modulus medical titanium alloy, and an additive manufacturing method and use thereof. The additive manufacturing method comprises alloy ingredient design, powder preparation, model construction and substrate preheating, and additive manufacturing molding; wherein the Si-containing high-strength and low-modulus medical titanium alloy is designed in the ingredient proportion of Ti 60-70 at. %, Nb 16-24 at. %, Zr 4-14 at. %, Ta 1-8 at. %, Si 0.1-5 at. %.

Abstract: An in-game virtual object control method including: providing, by a first terminal, a virtual object residence area on a graphical user interface of the first terminal, where a plurality of virtual objects to be selected are displayed in the virtual object resident area according to a trigger instruction; in response to a selection instruction for the plurality of virtual objects to be selected, selecting a target number of target virtual objects from the plurality of virtual objects to be selected, and adding the target number of target virtual objects into a virtual city; generating a demand task associated with at least one unselected virtual object to be selected, and displaying, on the graphical user interface, task information corresponding to the demand task; and completing the demand task, increasing the a preset duration for the virtual object to be selected to leave the virtual object residence area corresponding to the demand task.

Abstract: Method for making poly(propylene fumarate) (PPF) polymer made by ring-opening polymerization of propylene oxide and maleic anhydride in the presence of magnesium ethoxide initiator, wherein PPF is specifically designed for us in 3D manufacturing of medical devices. PPF polymers have a number average molecular weight (Mn) of from about 450 Daltons to about 3400 Daltons; a molecular mass distribution (m) of from 1.0 to 2.0; and contains less than 1% w/w of poly(maleic anhydride-co-propylene oxide) polymer chains particularly. PPF polymers are non-toxic, degradable, and resorbable and can be used in tissue scaffolds and medical devices that are implanted within a living organism.

Abstract: The present invention provides a low molecular mass PPF polymer (and related methods) that is suitable for 3D printing and other polymer device fabrication modalities and can be made inexpensively in commercially reasonable quantities. These novel low molecular mass PPF polymers have a low molecular mass distribution (m) and a wide variety of potential uses, particularly as a component in resins for 3D printing of medical devices. The ability to produce low m PPF creates a new opportunity for reliable GMP production of PPF. It provides low cost synthesis and scalability of synthesis, blending of well-defined mass and viscosity PPF, and reduced reliance on solvents or heat to (a) achieve mixing of 3D printable resins or (b) and flowability during 3D printing. These PPF polymers are non-toxic, degradable, and resorbable and can be used in tissue scaffolds and medical devices that are implanted within a living organism.