[ Objective] The study aimed to explore the expression of muscular growth hormone receptor gene （GHR） in sheep at the early stage of growth and development. [Method] The GHR mRNA expression levels in longissimus dor...[ Objective] The study aimed to explore the expression of muscular growth hormone receptor gene （GHR） in sheep at the early stage of growth and development. [Method] The GHR mRNA expression levels in longissimus dorsal muscles of male Kazak sheep and Xinjiang fine wool sheep with different ages were quantitatively analyzed by real time PCR. [ Result] Sheep GHR mRNA expression level in longissimus dorsal muscle increased firstly followed by decline, and then kept steady until the end of the experiment, with the expression peak appearing on postnatal day 30. The GHR mRNA expression level of Kazak sheep was extremely lower than that of Xingjiang fine wool sheep from 2 to 90 days old （ P 〈0.01 ）. E Conclusionl Both age and breed had great effects on the expression of muscular GHR gene in sheep.展开更多
[Objective] The study was to immunohistochemical localize the endocrine cells from digestive tract of Misgurnus [ Method ] Using six gastrointestinal hormone antisera, the endocrine cells from digestive tract of M. an...[Objective] The study was to immunohistochemical localize the endocrine cells from digestive tract of Misgurnus [ Method ] Using six gastrointestinal hormone antisera, the endocrine cells from digestive tract of M. anguillicaudatus was localized. [ Result ]The 5-hydroxytryptamine immunoreactive（5-HT-IR） cells distribute in oesophagus, foregut and midgut; the distribution density was determined to be forepart of foregut 〉 oesophagus and hindpart of foregut 〉 gut, and the differences in the three density gradients reached significant level. Like PP-IR, SS-IR cells were observed mostly in oesophagus, followed by hindpart of foregut, least in forepart of foregut, but never found in gut and hindgut. The three kinds of immunocompetent cells Gas-IR, Glu-IR and SP-IR were not detected in each part of digestive tract. [ Conctusion] This study may provide basic data for studying the nutritional and digestive physiology, as well as the preparation of meridic diets for M. anguillicaudatus.展开更多
Material dematerialization is a basic approach to reduce the pressure on the resources and environment and to realize the sustainable development. The material flow analysis and decomposition method are used to calcul...Material dematerialization is a basic approach to reduce the pressure on the resources and environment and to realize the sustainable development. The material flow analysis and decomposition method are used to calculate the direct material input (DMI) of 14 typical mining cities in Northeast China in 1995–2004 and to analyze the demateri- alization and its driving factors in the different types of mining cities oriented by coal, petroleum, metallurgy and multi-resources. The results are as follows: 1) from 1995 to 2006, the increase rates of the DMI and the material input intensity of mining cities declined following the order of multi-resources, metallurgy, coal, and petroleum cities, and the material utilizing efficiency did following the order of petroleum, coal, metallurgy, and multi-resources cities; 2) during the research period, all the kinds of mining cities were in the situation of weak sustainable development in most years; 3) the pressure on resources and environment in the multi-resources cities was the most serious; 4) the petro- leum cities showed the strong trend of sustainable development; and 5) in recent years, the driving function of eco- nomic development for material consuming has continuously strengthened and the controlling function of material utilizing efficiency for it has weakened. The key approaches to promote the development of circular economy of min- ing cities in Northeast China are put forward in the following aspects: 1) to strengthen the research and development of the technique of resources’ cycling utilization, 2) to improve the utilizing efficiency of resources, and 3) to carry out the auditing system of resources utilization.展开更多
China has formed a complete and packaged system of domestic petroleum refining industry. Till 2020 the demand for petroleum products in China will record a sharp growth. However, China is currently confronted with a s...China has formed a complete and packaged system of domestic petroleum refining industry. Till 2020 the demand for petroleum products in China will record a sharp growth. However, China is currently confronted with a shortage of oil resources, unsatisfactory quality of petroleum products, a widening gap between demand and supply of steam cracking feedstocks, and a stern situation in environmental protection.In this context the petroleum refiners of China, while taking into account the actual conditions, should seek for the way of deep processing to produce transportation fuels and chemical feedstocks that can hardly be replaced by other energy forms, continue to bring into full play FCC process as core process for making finished oil products, speed up the development of hydrocracking to achieve integration between refining and chemical production, adopt measures that can combine feedstock pre-treatment, novel FCC technologies and after-treatment of products to improve the quality of finished products, as well as realize the recycling of wastewater and control over air pollution caused by SOx to accelerate the development of petroleum processing industry in China.展开更多
The author used two common methods in this industry, i. e. the ＂Consumption Coefficient Method＂ and the ＂Elasticity Coefficient Trend Method＂, to forecast the refined oil product demand in 2010. Through analyzing ...The author used two common methods in this industry, i. e. the ＂Consumption Coefficient Method＂ and the ＂Elasticity Coefficient Trend Method＂, to forecast the refined oil product demand in 2010. Through analyzing and comparing the two forecast results, it is projected that the demand for finished product oils in 2010 will be in the range of 220 to 240 million tons a year. In addition, out of concern about the total oil products consumption to exceed 600 million tons/year in 2020, the author puts forward suggestions and measures aimed at conservation of oil products and application of alternative fuels.展开更多
By using methods of carbon footprint analysis, and impacts of population, affluence and technology （IPAT）, this article analyzes the carbon footprints of residence and travel, and their influential factors for diffe...By using methods of carbon footprint analysis, and impacts of population, affluence and technology （IPAT）, this article analyzes the carbon footprints of residence and travel, and their influential factors for different urban residential incomes, using 1,500 household questionnaires in Shijiazhuang city, Hebei province. The results show that the process of urban residents improving their living standards is also a driving factor in the increase of their carbon footprints; at the same time, the progress in technology has a positive impact on reducing the carbon footprints of urban residence. This article suggests that some measures, such as promoting energy-saving buildings and central heating supply, and establishing the convenient and comfortable public transport system, should be taken to reduce the carbon footprints of residence and travel in Shijiazhuang city.展开更多
基金Supported by Doctoral Fund of Xinjiang Production and Construction Corps of CPLA (2003-02)~~
文摘[ Objective] The study aimed to explore the expression of muscular growth hormone receptor gene （GHR） in sheep at the early stage of growth and development. [Method] The GHR mRNA expression levels in longissimus dorsal muscles of male Kazak sheep and Xinjiang fine wool sheep with different ages were quantitatively analyzed by real time PCR. [ Result] Sheep GHR mRNA expression level in longissimus dorsal muscle increased firstly followed by decline, and then kept steady until the end of the experiment, with the expression peak appearing on postnatal day 30. The GHR mRNA expression level of Kazak sheep was extremely lower than that of Xingjiang fine wool sheep from 2 to 90 days old （ P 〈0.01 ）. E Conclusionl Both age and breed had great effects on the expression of muscular GHR gene in sheep.
基金Supported by Anhui Key Laboratory of Plant Resources and Biology~~
文摘[Objective] The study was to immunohistochemical localize the endocrine cells from digestive tract of Misgurnus [ Method ] Using six gastrointestinal hormone antisera, the endocrine cells from digestive tract of M. anguillicaudatus was localized. [ Result ]The 5-hydroxytryptamine immunoreactive（5-HT-IR） cells distribute in oesophagus, foregut and midgut; the distribution density was determined to be forepart of foregut 〉 oesophagus and hindpart of foregut 〉 gut, and the differences in the three density gradients reached significant level. Like PP-IR, SS-IR cells were observed mostly in oesophagus, followed by hindpart of foregut, least in forepart of foregut, but never found in gut and hindgut. The three kinds of immunocompetent cells Gas-IR, Glu-IR and SP-IR were not detected in each part of digestive tract. [ Conctusion] This study may provide basic data for studying the nutritional and digestive physiology, as well as the preparation of meridic diets for M. anguillicaudatus.
基金Under the auspices of Key Program of National Natural Science Foundation of China (No. 40635030)National Natu-ral Science Foundation of China (No. 40571041)
文摘Material dematerialization is a basic approach to reduce the pressure on the resources and environment and to realize the sustainable development. The material flow analysis and decomposition method are used to calculate the direct material input (DMI) of 14 typical mining cities in Northeast China in 1995–2004 and to analyze the demateri- alization and its driving factors in the different types of mining cities oriented by coal, petroleum, metallurgy and multi-resources. The results are as follows: 1) from 1995 to 2006, the increase rates of the DMI and the material input intensity of mining cities declined following the order of multi-resources, metallurgy, coal, and petroleum cities, and the material utilizing efficiency did following the order of petroleum, coal, metallurgy, and multi-resources cities; 2) during the research period, all the kinds of mining cities were in the situation of weak sustainable development in most years; 3) the pressure on resources and environment in the multi-resources cities was the most serious; 4) the petro- leum cities showed the strong trend of sustainable development; and 5) in recent years, the driving function of eco- nomic development for material consuming has continuously strengthened and the controlling function of material utilizing efficiency for it has weakened. The key approaches to promote the development of circular economy of min- ing cities in Northeast China are put forward in the following aspects: 1) to strengthen the research and development of the technique of resources’ cycling utilization, 2) to improve the utilizing efficiency of resources, and 3) to carry out the auditing system of resources utilization.
文摘China has formed a complete and packaged system of domestic petroleum refining industry. Till 2020 the demand for petroleum products in China will record a sharp growth. However, China is currently confronted with a shortage of oil resources, unsatisfactory quality of petroleum products, a widening gap between demand and supply of steam cracking feedstocks, and a stern situation in environmental protection.In this context the petroleum refiners of China, while taking into account the actual conditions, should seek for the way of deep processing to produce transportation fuels and chemical feedstocks that can hardly be replaced by other energy forms, continue to bring into full play FCC process as core process for making finished oil products, speed up the development of hydrocracking to achieve integration between refining and chemical production, adopt measures that can combine feedstock pre-treatment, novel FCC technologies and after-treatment of products to improve the quality of finished products, as well as realize the recycling of wastewater and control over air pollution caused by SOx to accelerate the development of petroleum processing industry in China.
文摘The author used two common methods in this industry, i. e. the ＂Consumption Coefficient Method＂ and the ＂Elasticity Coefficient Trend Method＂, to forecast the refined oil product demand in 2010. Through analyzing and comparing the two forecast results, it is projected that the demand for finished product oils in 2010 will be in the range of 220 to 240 million tons a year. In addition, out of concern about the total oil products consumption to exceed 600 million tons/year in 2020, the author puts forward suggestions and measures aimed at conservation of oil products and application of alternative fuels.
基金supported under the French Institute of Veolia Environment(IVE) program
文摘By using methods of carbon footprint analysis, and impacts of population, affluence and technology （IPAT）, this article analyzes the carbon footprints of residence and travel, and their influential factors for different urban residential incomes, using 1,500 household questionnaires in Shijiazhuang city, Hebei province. The results show that the process of urban residents improving their living standards is also a driving factor in the increase of their carbon footprints; at the same time, the progress in technology has a positive impact on reducing the carbon footprints of urban residence. This article suggests that some measures, such as promoting energy-saving buildings and central heating supply, and establishing the convenient and comfortable public transport system, should be taken to reduce the carbon footprints of residence and travel in Shijiazhuang city.
