Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Kefeng Han"'
Publikováno v:
Frontiers in Plant Science, Vol 13 (2023)
IntroductionThe increasing demand for animal-products has led to an increasing demand for livestock feed. Using cover crop as green manure in orchards is an effective measure to improve fruit yield and quality. However, the effect of mowing cover for
Externí odkaz:
https://doaj.org/article/07988363f722479cad1222079c0d5bdd
Publikováno v:
Agronomy, Vol 13, Iss 5, p 1361 (2023)
Low soil fertility and low microbiological activity have been widely observed in certain newly cultivated lands. To develop effective agricultural management practices that can improve soil quality rapidly, a field experiment was conducted on paddy f
Externí odkaz:
https://doaj.org/article/bef9cb0ca92b4cfbbf4b14141209b74f
Publikováno v:
Agronomy, Vol 11, Iss 1, p 26 (2020)
Nutrient requirements for single-season rice using the quantitative evaluation of the fertility of tropical soils (QUEFTS) model in China have been estimated in a previous study, which involved all the rice varieties; however, it is unclear whether a
Externí odkaz:
https://doaj.org/article/25ef4ab5647f4e9095a875da62d02d66
Autor:
Tao Sun, Xin Yang, Xiaoli Tan, Kefeng Han, Sheng Tang, Weiming Tong, Siyi Zhu, Zhaoping Hu, Lianghuan Wu
Publikováno v:
Agronomy, Vol 10, Iss 2, p 171 (2020)
Previous studies have revealed that the japonica/indica hybrid rice has a higher yield potential, biomass production, and nitrogen (N) accumulation than japonica rice in China, however, at a single N application rate. It remains unclear whether it al
Externí odkaz:
https://doaj.org/article/e50a17fcfc654e6fa6d1e799eace9326
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 71:1563-1572
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f01c648b2841a20ec526a7206e6e6d54
https://doi.org/10.1109/tmtt.2022.3220257
https://doi.org/10.1109/tmtt.2022.3220257
Autor:
Haoran, Fu, Zhengbo, Ma, Xiangjie, Wang, Kaijun, Chen, Kefeng, Han, Qingxu, Ma, Lianghuan, Wu
Publikováno v:
Environmental Science and Pollution Research. 30:17316-17326
Pears are an important income source in China, and unreasonable management practices have had a negative impact on the sustainability of pear orchards. However, multi-objective synergistic strategies are unclear on a farmer scale. In this study, we q
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8254d766193060850ac5972a86205a82
https://doi.org/10.1007/s11356-022-23319-8
https://doi.org/10.1007/s11356-022-23319-8
Autor:
Kefeng Han, Li Geng
Publikováno v:
International Journal of Circuit Theory and Applications. 51:897-911
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef3ba2170c1441aab7d358bfa13c33b1
https://doi.org/10.1002/cta.3455
https://doi.org/10.1002/cta.3455
Autor:
Tao Sun, Xiali Mao, Qingxu Ma, Kefeng Han, Xiangjie Wang, Qi Cheng, Xiongchao Sheng, Wenhai Mi, Lianghuan Wu
Publikováno v:
Applied Soil Ecology. 188:104923
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::860a04fc794e1b6bf88a5f4a94713525
https://doi.org/10.1016/j.apsoil.2023.104923
https://doi.org/10.1016/j.apsoil.2023.104923
Autor:
Li Geng, Kefeng Han
Publikováno v:
IEEE Microwave and Wireless Components Letters. 31:873-876
A high-efficiency concurrent dual-band GaN power amplifier (PA) is designed and fabricated based on the network parameter extraction (NPE) method, where the expanded optimum load impedance spaces of continuous modes are applied to construct the NPE c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee4b6386dc8fd7d78267a7d6112b156b
https://doi.org/10.1109/lmwc.2021.3074965
https://doi.org/10.1109/lmwc.2021.3074965
Publikováno v:
IEEE Transactions on Circuits and Systems I: Regular Papers. 67:4142-4153
Envelope tracking (ET) is an effective way to improve the efficiency of power amplifier (PA) for 5G communication systems. To understand the restriction of the hybrid supply modulator (HSM) for ultra-wide band ET applications, an extended power loss
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ada513bf18af5a977061b8b9ac803b2f
https://doi.org/10.1109/tcsi.2020.3014087
https://doi.org/10.1109/tcsi.2020.3014087