The excessive influence of human activity has highlighted the dilemma between maintaining a stable ecosystem while satisfying consumer demands for food.Kazakhstan has ecological problems caused by the conflict between...The excessive influence of human activity has highlighted the dilemma between maintaining a stable ecosystem while satisfying consumer demands for food.Kazakhstan has ecological problems caused by the conflict between humans and the land,grasslands and raising livestock.Therefore,this study of the food consumption modes in Kazakhstan aims to improve the sustainability of food consumption while maintaining the integrity of the ecosystem.Based on the data of food consumption in Kazakhstan in 2012 and 2016,and through the delineation of consumption modes and the analysis of their changes,this study found three very different food consumption modes in Kazakhstan-one dominated by milk and cereals;one by milk,cereals and meat;and one by milk,cereals,meat,vegetables and fruit.These three modes were distributed separately in the northern,central and southern regions of Kazakhstan,respectively.It is worth noting that food consumption in Kazakhstan is developing into a pattern of milk,cereals and meat.Confronted with the different food consumption modes and their tendencies toward variations,the basic theories of food production need to be revised,and the exchange of information and cooperation between the different regions of Kazakhstan and relevant interests abroad should be encouraged in order to increase the well-being of local consumers.展开更多
We report on the design and fabrication of λ-7.2μm distributed feedback quantum cascade lasers lot very high temperature cw operation and low electrical power consumption. The cw operation is reported above 90℃. Fo...We report on the design and fabrication of λ-7.2μm distributed feedback quantum cascade lasers lot very high temperature cw operation and low electrical power consumption. The cw operation is reported above 90℃. For a 2-mm-long and 10-μm-wide laser coated with high-reflectivity on the rear facet, more than 170mW of output power is obtained at 20℃ with a threshold power consumption of 2.4 W, corresponding to 30mW with a threshold power consumption of 3.9 W at 90℃. Robust single-mode emission with a side-mode suppression ratio above 25 dB is continuously tunable by the heat sink temperature or injection current.展开更多
With the rapid development of electronic commerce, supply chain management is facing more and more new challenges. Therefore, it is particularly important to study the development of clear direction of supply chain. H...With the rapid development of electronic commerce, supply chain management is facing more and more new challenges. Therefore, it is particularly important to study the development of clear direction of supply chain. However, the supply chain is composed of different interest subjects, each subject in order to achieve the maximization of their own interests and adopt different measures, is a complex, huge system, has brought the huge challenge to the supply chain management. In this paper, the research on Supply Chain Management in the current situation, characteristics and the modem supply chain management are summarized, and combined with new challenges of supply chain management to predict future research direction is the development of supply chain management, in order to make the supply chain management to the greatest extent satisfy the consumer e-commerce mode increasingly popular.展开更多
基金The Strategic Priority Research Program of the Chinese Academy of Sciences(XDA20010202)The National Key Research and Development Program of China(2016YFC0503700)
文摘The excessive influence of human activity has highlighted the dilemma between maintaining a stable ecosystem while satisfying consumer demands for food.Kazakhstan has ecological problems caused by the conflict between humans and the land,grasslands and raising livestock.Therefore,this study of the food consumption modes in Kazakhstan aims to improve the sustainability of food consumption while maintaining the integrity of the ecosystem.Based on the data of food consumption in Kazakhstan in 2012 and 2016,and through the delineation of consumption modes and the analysis of their changes,this study found three very different food consumption modes in Kazakhstan-one dominated by milk and cereals;one by milk,cereals and meat;and one by milk,cereals,meat,vegetables and fruit.These three modes were distributed separately in the northern,central and southern regions of Kazakhstan,respectively.It is worth noting that food consumption in Kazakhstan is developing into a pattern of milk,cereals and meat.Confronted with the different food consumption modes and their tendencies toward variations,the basic theories of food production need to be revised,and the exchange of information and cooperation between the different regions of Kazakhstan and relevant interests abroad should be encouraged in order to increase the well-being of local consumers.
基金Supported by the National Basic Research Program of China under Grant No 2013CB632801the National Key Research and Development Program under Grant No 2016YFB0402303+2 种基金the National Natural Science Foundation of China under Grant Nos61435014,61627822,61574136 and 61306058the Key Projects of Chinese Academy of Sciences under Grant No ZDRW-XH-2016-4the Beijing Natural Science Foundation under Grant No 4162060
文摘We report on the design and fabrication of λ-7.2μm distributed feedback quantum cascade lasers lot very high temperature cw operation and low electrical power consumption. The cw operation is reported above 90℃. For a 2-mm-long and 10-μm-wide laser coated with high-reflectivity on the rear facet, more than 170mW of output power is obtained at 20℃ with a threshold power consumption of 2.4 W, corresponding to 30mW with a threshold power consumption of 3.9 W at 90℃. Robust single-mode emission with a side-mode suppression ratio above 25 dB is continuously tunable by the heat sink temperature or injection current.
文摘With the rapid development of electronic commerce, supply chain management is facing more and more new challenges. Therefore, it is particularly important to study the development of clear direction of supply chain. However, the supply chain is composed of different interest subjects, each subject in order to achieve the maximization of their own interests and adopt different measures, is a complex, huge system, has brought the huge challenge to the supply chain management. In this paper, the research on Supply Chain Management in the current situation, characteristics and the modem supply chain management are summarized, and combined with new challenges of supply chain management to predict future research direction is the development of supply chain management, in order to make the supply chain management to the greatest extent satisfy the consumer e-commerce mode increasingly popular.