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您的检索式：作者名="Xuezhao Chen"
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| 1 | A mathematical model to describe the diurnal pattern of enteric methane emissions from non-lactating dairy cows post-feeding显示文摘Enteric methane emission is not only a source of energy loss in ruminants, but also a potent contributor to greenhouse gas production. To identify the nature and timing of interventions to reduce methane emissions requires knowledge of temporal kinetics of methane emissions during animal husbandry.Accordingly, a mathematical model was developed to investigate the pattern of enteric methane emissions after feeding in dairy cows. The model facilitated estimation of total enteric methane emissions(V,g) produced by the residual substrate(V1, g) and newly ingested feed(V2, g). The model was fitted to the10 h methane emission patterns after morning feeding of 16 non-lactating dairy cows with various body weights(BW), and the obtained parameters were used to predict the kinetics of 24 h methane emission for each animal. The rate of methane emission(g/h) reached a maximum within 1 to 2 h after feeding,followed by a gradual post-prandial decline to a basal value before the next feeding. The model satisfactorily fitted curves for each cow according to the criterion of goodness-of-fit, and provided biological descriptions for fluctuations in methane emissions based on basal V1 and feeding V2 in response to the changes in BW and dry matter intake(DMI) of different dairy cows. The basal V1 and feeding V2 are probably maintained by slow-and readily-degradable substrates, respectively. The former contributed at least 0.6 of methane production. In summary, the model provides a means to separate basal V1 and feeding V2 within V, and can be used to predict 24 h emission from a single feeding period. | Min Wang Rong Wang Xuezhao Sun Liang Chen Shaoxun Tang Chuangshe Zhou Xuefeng Han Jinghe Kang Zhiliang Tan Zhixiong He | 2015 | Animal Nutrition2015，，4： | 2 |
| 2 | Synthesis of Monodisperse CoPt3 Nanocrystals and Their Catalytic Behavior for Growth of Boron Nanowires显示文摘Monodisperse CoPt3 nanocrystals (NC ) 被一个器官的 solvothermal 方法在 oleylamine 答案综合了。NC 在有好单个水晶结构的 10 nm 附近是有在 6.6 nm 和长度附近的一条直径的椭圆体的粒子。把 CoPt3 NC 用作催化剂,有从 30 ~ 50 nm 的直径的大区域的硼 nanowires 被化学蒸汽免职成功地作为先锋用 C/B/B2O3 混合物准备。结构的分析显示这些 nanowires 是与菱形的结构水晶的单身者。硼 nanowire 电影的地排放性质的测量证明硼 nanowires 有好地排放特征。 | Yuan Tian Chengmin Shen Chen Li Xuezhao Shi Yuan Huang Hongjun Gao | 2011 | Nano Research2011，4，8： | 0 |
| 3 | Exploring the development of municipal solid waste disposal facilities in Chinese cities:patterns and drivers显示文摘Rapid urbanization in Chinese cities has led to a surge in municipal solid waste(MSW)generation,necessitating the development of high-quality MSW disposal facilities.This study utilizes multi-source data and regression models to examine the status,development pathways,and driving forces of MSW disposal facilities in China.Our findings reveal an inverted U-shaped relationship between the capacities or numbers of MSW disposal facilities and GDP per capita of cities.Historical data show that cities in East and Southeast China preferred incineration,while cities in West and Central China developed landfills more,largely shaped by the imbalance of development levels and endowments among regions in China.The study also identifies mixed and differentiated influences of socio-economic factors on capacity expansion and increases in the number of MSW disposal facilities.The results suggest the need for updated construction guidelines and regulations,as well as enhanced technological and managerial capabilities for MSW infrastructure.These findings can inform policymakers and practitioners in their efforts to promote sustainable waste management practices in China. | Xiao Li Yanan Ren Xuezhao Chen Yang Li Marian R.Chertow | 2023 | Frontiers of Environmental Science & Engineering2023，17，11： | 0 |
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