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[期刊论文] 作者:Jiyoung Kim,Sun Go, 来源:中国与世界经济(英文版) 年份:2022
We estimate the effect of exports to China on local employment in South Korea,exploiting variations in trade and employment across 220 South Korean municipalities between 2007 and 2017.To identify the effect of exports on employment,we use ......
[期刊论文] 作者:José Gabriel de Souza Silva,Diêgo Faustolo Alves Bispo,David Pessanha Siqueira,Giovanna Campos Mamede, 来源:林业研究(英文版) 年份:2022
Apuleia leiocarpa is an environmentally and economically significant Atlantic Forest species threat-ened by ongoing exploitation. The vegetative propagation of the species could be a step forward to enable implanta-tion of clonal seed orcha......
[期刊论文] 作者:Ramdhan Dwi NUGROHO,Dieudonné Mahukpégo DANSOU,王浩,贺维朝,张军民,汤超华,赵青余,秦玉昌, 来源:中国畜牧杂志 年份:2022
试验旨在研究富虾青素玉米对蛋鸡生产性能、抗氧化能力、虾青素富集及蛋品质的影响。选用28周龄海兰褐蛋鸡270只,分为3组,每组6重复,每重复15只鸡。对照组饲喂玉米-豆粕型饲粮,虾青素组在饲粮中添加虾青素24.32 mg/kg(计算值),富虾青素玉米组采用富虾青素玉米配制饲粮,......
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