This paper investigates the verb valency structure of English that is used by English as Foreign Language(EFL)learners from a corpus-driven perspective.Specifically,it focuses on the usage of the verbs“suggest”and“...This paper investigates the verb valency structure of English that is used by English as Foreign Language(EFL)learners from a corpus-driven perspective.Specifically,it focuses on the usage of the verbs“suggest”and“advise”in a selected corpus.By analyzing a sample of written and spoken texts,this study attempts to investigate the similarities and differences in the patterns of verb valency between native English speakers and Chinese EFL learners.The findings of this research can contribute to a better understanding of the challenges faced by Chinese EFL learners in acquiring accurate verb valency structures and provide insights for language teachers in designing effective pedagogical approaches.展开更多
The electronic product has gravitated towards component miniaturization and integration, employment of lead-free materials, and low-temperature soldering processes. Noble-metal aerogels have drawn increasing attention...The electronic product has gravitated towards component miniaturization and integration, employment of lead-free materials, and low-temperature soldering processes. Noble-metal aerogels have drawn increasing attention for high conduction and low density. However,the noble metal aerogels with outstanding solderability were rarely studied. This work has successfully synthesized an aerogel derived from silver nanowires(AgNWs) using a liquid phase reduction method. It is found that the noble metal aerogels can be made into diverse aerogel preformed soldering sheets. The influence of bonding temperature(150-300 ℃), time(2-20 min), and pressure(5-20 MPa) on the joint strength of the AgNWs aerogel affixed to electroless nickel/silver copper plates were investigated. Additionally, the AgNWs aerogel displays almost the same shear strength for substrates of various sizes. In a word, this study presents a flux-free, high-strength, and adaptable soldering structural material.展开更多
施氮能够增加土壤中氮的有效性,提高植株光合作用,促进植株对氮的吸收和干物质的积累,最终增加作物产量。但是在长期高氮秸秆还田条件下,是否应调整施氮量尚不清楚。为探究长期秸秆还田条件下施氮量对棉花光合速率、干物质和养分积累分...施氮能够增加土壤中氮的有效性,提高植株光合作用,促进植株对氮的吸收和干物质的积累,最终增加作物产量。但是在长期高氮秸秆还田条件下,是否应调整施氮量尚不清楚。为探究长期秸秆还田条件下施氮量对棉花光合速率、干物质和养分积累分配、产量、氮素利用和土壤氮素变化的影响,本研究设置0(N0)、150(N150)、180(N180)、210(N210)、240(N240)、270(N270)和300(N300)kg hm^(–2)共7个施氮量处理。与常规施氮量(N300)相比,2020—2021年,减氮30%(N210)处理2年均获得了较高产量,分别为1853.62 kg hm^(–2)和1872.43 kg hm^(–2),减氮40%(N180)仅在第1年保持了较高产量,为1743.68 kg hm^(–2)。2021年,N210的净光合速率、干物质和养分积累量均高于N180,两者间生殖器官的干物质和养分分配系数、氮肥利用效率未有显著差异,但N180的土壤表观氮盈余量显著降低了39.15%。综上,长期秸秆还田条件下,鲁西北棉区应适量减少施氮量。展开更多
文摘This paper investigates the verb valency structure of English that is used by English as Foreign Language(EFL)learners from a corpus-driven perspective.Specifically,it focuses on the usage of the verbs“suggest”and“advise”in a selected corpus.By analyzing a sample of written and spoken texts,this study attempts to investigate the similarities and differences in the patterns of verb valency between native English speakers and Chinese EFL learners.The findings of this research can contribute to a better understanding of the challenges faced by Chinese EFL learners in acquiring accurate verb valency structures and provide insights for language teachers in designing effective pedagogical approaches.
基金the National Natural Science Foundation of China(Grant No.52075125,No.52105331)the Shenzhen Science and Technology Innovation Committee(Grant No.JCYJ20210324124203009,No.JSGG20201102154600003,No.GXWD20220818163456002)+1 种基金Special Fund for Science and Technology Innovation Strategy of Guangdong Province(Grant No.pdjh2022b0570)Sustainedly Supported Fundation by National Key Laboratory of Science and Technology on Space Microwave under Grant HTKJ2022KL504011,and NIO University Programme(NIO UP).
文摘The electronic product has gravitated towards component miniaturization and integration, employment of lead-free materials, and low-temperature soldering processes. Noble-metal aerogels have drawn increasing attention for high conduction and low density. However,the noble metal aerogels with outstanding solderability were rarely studied. This work has successfully synthesized an aerogel derived from silver nanowires(AgNWs) using a liquid phase reduction method. It is found that the noble metal aerogels can be made into diverse aerogel preformed soldering sheets. The influence of bonding temperature(150-300 ℃), time(2-20 min), and pressure(5-20 MPa) on the joint strength of the AgNWs aerogel affixed to electroless nickel/silver copper plates were investigated. Additionally, the AgNWs aerogel displays almost the same shear strength for substrates of various sizes. In a word, this study presents a flux-free, high-strength, and adaptable soldering structural material.
文摘施氮能够增加土壤中氮的有效性,提高植株光合作用,促进植株对氮的吸收和干物质的积累,最终增加作物产量。但是在长期高氮秸秆还田条件下,是否应调整施氮量尚不清楚。为探究长期秸秆还田条件下施氮量对棉花光合速率、干物质和养分积累分配、产量、氮素利用和土壤氮素变化的影响,本研究设置0(N0)、150(N150)、180(N180)、210(N210)、240(N240)、270(N270)和300(N300)kg hm^(–2)共7个施氮量处理。与常规施氮量(N300)相比,2020—2021年,减氮30%(N210)处理2年均获得了较高产量,分别为1853.62 kg hm^(–2)和1872.43 kg hm^(–2),减氮40%(N180)仅在第1年保持了较高产量,为1743.68 kg hm^(–2)。2021年,N210的净光合速率、干物质和养分积累量均高于N180,两者间生殖器官的干物质和养分分配系数、氮肥利用效率未有显著差异,但N180的土壤表观氮盈余量显著降低了39.15%。综上,长期秸秆还田条件下,鲁西北棉区应适量减少施氮量。
