Abstract: A method for cultivating a Tung tree seedling through hypocotyle grafting includes selection of a sand storage time of a rootstock (Vernicia montana Lour.) seed, seedbed construction, scion collection, scion cutting, rootstock cutting, bandaging, transplantation and management, and the like. A grafted plant obtained by a traditional grafting method (bud grafting) for Tung tree is easy to break at a grafting interface; and when the stem grafting is conducted, because a scion is thick, a rootstock for grafting must be cultivated one year in advance. These grafting methods have production problems such as long cycle and high cost, which can be solved by the present disclosure. The present disclosure has a short rootstock cultivation time, simple grafting operations, a high grafting efficiency, and a high survival rate, greatly shortens a cycle of asexual propagation-based seedling cultivation for Tung tree.

Abstract: A strain of Bifidobacterium longum subsp. infantis Y46 with fimbriae (BI_Y46) includes a unique flagella structure, exhibits strong abilities in utilizing 2-fucosyllactose (2?-FL), galacto-oligosaccharides and short-chain galacto-oligosaccharides, possesses excellent probiotic characteristics with higher levels of extracellular polysaccharides and surface proteins than a strain of Bifidobacterium longum subsp. infantis M63 (BI_M63) and a strain of Bifidobacterium longum subsp. infantis ATCC 15697 (BI_15697), and further displays stronger ability to tolerate gastric acid and inhibitory ability of the cell-free supernatant to Escherichia coli ATCC 15922 than the BI_15697. Therefore, the BI_Y46 has excellent probiotic potential and can be used to develop probiotics, infant food, prebiotic products, and functional foods.

Abstract: A device for removing unwanted objects from cut tobacco in a cut tobacco production line is disclosed, which includes: a raw cut tobacco feeding and conveying unit (N1), a heavy unwanted object removal unit (N2), a cut tobacco dispersion and recovery unit (N3), a moderate unwanted object removal unit (N4), a cut tobacco humidification unit (N5) and a light unwanted object removal unit (N6). An unwanted object removal method using the cut tobacco unwanted object removal device is also disclosed. The device and method of the disclosure can effectively remove unwanted objects from cut tobacco.

Abstract: The present disclosure provides a process of clean production of electronic grade high-purity copper oxide. The process includes (1) preparing a carbon-ammonia system solution with a certain ratio of CO2, NH3 and H2O; (2) dissolving copper under a slightly negative pressure and at a system temperature less than or equal to 60° C.; the reaction ends until the concentration of copper in the carbon-ammonia system solution reaches 80 to 140 g/L; (3) adding sodium polyacrylate; the reaction solution is heated to 60-80° C. under a reduced pressure for deamination; (4) disposing basic copper carbonate to separate the solid from the liquid by a centrifuge to give an filter cake and copper-containing clear solution; (5) calcining the filter cake at 250-600° C.

Abstract: The present disclosure provides a process of clean production of electronic grade high-purity copper oxide. The process includes (1) preparing a carbon-ammonia system solution with a certain ratio of CO2, NH3 and H2O; (2) dissolving copper under a slightly negative pressure and at a system temperature less than or equal to 60° C.; the reaction ends until the concentration of copper in the carbon-ammonia system solution reaches 80 to 140 g/L; (3) adding sodium polyacrylate; the reaction solution is heated to 60-80° C. under a reduced pressure for deamination; (4) disposing basic copper carbonate to separate the solid from the liquid by a centrifuge to give an filter cake and copper-containing clear solution; (5) calcining the filter cake at 250-600° C.