This paper makes systematic observations of China＇s contributions to global macroeconomic growth and bulk commodity consumption. Our observations suggest that while China＇s economic size is relatively small on a per...This paper makes systematic observations of China＇s contributions to global macroeconomic growth and bulk commodity consumption. Our observations suggest that while China＇s economic size is relatively small on a per capita basis, its contributions are large in terms of overall volume; moreover, the economy has experienced tremendous growth. Quantifying these characteristics that are unique to China＇s development creates a realistic background upon which China can re-examine its trade and economic policies and strategic thinking.展开更多
[Objective] The aim was to investigate the contribution of potassium,nitrogen and organic fertilizer to super rice production.[Method] The data about the labor force input,fertilizer input,organic fertilizer input,con...[Objective] The aim was to investigate the contribution of potassium,nitrogen and organic fertilizer to super rice production.[Method] The data about the labor force input,fertilizer input,organic fertilizer input,contents of effective nitrogen and effective potassium in production,obtained through empirical study of 690 rice farmers in eight counties （cities） in Liaoning,Zhejiang and Hunan in 2009,were analyzed by using Cobb-Douglas production function model to study influence of material input （especially the fertilizer input） and labor force input to the yield of super rice,and the correlation between the input and the yield of rice production.[Result] The increase in amount of organic fertilizer has significantly increased the yield of super rice.The amount of chemical fertilizer applied is becoming more reasonable,but increase of yield does not result in increase of value.Different types of fertilizers have significantly different capabilities in increasing yields of super rice.The potassium fertilizer is superior to phosphorous fertilizer,while phosphorous is superior to nitrogenous fertilizer in improving production capacity.[Conclusion] The paper suggests that it should continue to increase the amount of organic fertilizers and potassium fertilizer and meanwhile control the amount of nitrogenous fertilizer in super rice production at present.展开更多
Epidermal growth factor receptor (EGFR) is overexpressed in head and neck squamous-cell carcinoma (HNSCC) and its expression levels correlate with decreased patient survival. Nonetheless, therapies aiming at blocking ...Epidermal growth factor receptor (EGFR) is overexpressed in head and neck squamous-cell carcinoma (HNSCC) and its expression levels correlate with decreased patient survival. Nonetheless, therapies aiming at blocking EGFR has shown limited efficacy in a proportion of patients with HNSCC in clinical trials. Sok et al. in a recent paper (Clin Cancer Res, 2006, 12:5064-5073 ) attempted to ascertain whether it is due to mutation of EGFR. As the most common form of mutation of EGFR seen in several other types of cancer is a truncation mutation,展开更多
文摘This paper makes systematic observations of China＇s contributions to global macroeconomic growth and bulk commodity consumption. Our observations suggest that while China＇s economic size is relatively small on a per capita basis, its contributions are large in terms of overall volume; moreover, the economy has experienced tremendous growth. Quantifying these characteristics that are unique to China＇s development creates a realistic background upon which China can re-examine its trade and economic policies and strategic thinking.
文摘[Objective] The aim was to investigate the contribution of potassium,nitrogen and organic fertilizer to super rice production.[Method] The data about the labor force input,fertilizer input,organic fertilizer input,contents of effective nitrogen and effective potassium in production,obtained through empirical study of 690 rice farmers in eight counties （cities） in Liaoning,Zhejiang and Hunan in 2009,were analyzed by using Cobb-Douglas production function model to study influence of material input （especially the fertilizer input） and labor force input to the yield of super rice,and the correlation between the input and the yield of rice production.[Result] The increase in amount of organic fertilizer has significantly increased the yield of super rice.The amount of chemical fertilizer applied is becoming more reasonable,but increase of yield does not result in increase of value.Different types of fertilizers have significantly different capabilities in increasing yields of super rice.The potassium fertilizer is superior to phosphorous fertilizer,while phosphorous is superior to nitrogenous fertilizer in improving production capacity.[Conclusion] The paper suggests that it should continue to increase the amount of organic fertilizers and potassium fertilizer and meanwhile control the amount of nitrogenous fertilizer in super rice production at present.
文摘Epidermal growth factor receptor (EGFR) is overexpressed in head and neck squamous-cell carcinoma (HNSCC) and its expression levels correlate with decreased patient survival. Nonetheless, therapies aiming at blocking EGFR has shown limited efficacy in a proportion of patients with HNSCC in clinical trials. Sok et al. in a recent paper (Clin Cancer Res, 2006, 12:5064-5073 ) attempted to ascertain whether it is due to mutation of EGFR. As the most common form of mutation of EGFR seen in several other types of cancer is a truncation mutation,
