A study about some physicochemical parameters of Egbe reservoir was carried out from September 2005 to December 2006. The parameters include mean temperature, pH, conductivity, alkalinity, TSS, TDS, DO and BOD which h...A study about some physicochemical parameters of Egbe reservoir was carried out from September 2005 to December 2006. The parameters include mean temperature, pH, conductivity, alkalinity, TSS, TDS, DO and BOD which have values of 28.7±0.9 ℃ ; 8.3±0.3; 831±172.5 μS/cm; 165.4±18.3 mg/L; 0.06±0.1 mg/L; 0.4±0.6 mg/L; 7.8±2.4 mg/L and 5.2±1.6mg/L, respectively. Temperature and pH were measured in the field using mercury-in-glass thermometer calibrated in degrees Celsius and pH meter, respectively. TSS and TDS were measured by grayimetric methods, while alkalinity was measured titrimetrically and DO and BOD were measured by Winkler＇s method. For the nutrients, nitrate was measured color±metrically, phosphate by Stannous Chloride method and sulphate by turbidimetric method. Mean concentration of nitrate, phosphate, and sulphate were 15.6±8.6 rag/L; 42.5±19.4 mg/L and 72.3±14.7 mg/L respectively. Nowadays, eutrophication of natural waters is one of the most significant causes of deterioration of water quality, and nitrates and phosphates are probably the key nutrients in controlling the growth of aquatic plants. Though the mean concentration of nitrates and phosphates in the reservoir water were within the acceptable limit, yet their concentrations in some locations of reservoir were high enough to encourage the growth of aquatic macrophytes which would increase productivities. Hence, it is necessary to check their further increase, and periodic monitoring and preventive measures must be adopted to save the reservoir from eutrophication.展开更多
Cold types of wheat are the kinds of wheat whose canopy temperature keeps slightly lower and has a series of advantageous traits,which are fa- vorable for wheat to have high and stable yield and stable high quality.Th...Cold types of wheat are the kinds of wheat whose canopy temperature keeps slightly lower and has a series of advantageous traits,which are fa- vorable for wheat to have high and stable yield and stable high quality.The paper expatiates on the ad- vances and important problems in the research of cold types of wheat and predicts the future of cold types of wheat and the influences of the research about cold types of wheat on other crops and plants.展开更多
Along with the deepening of China＇s marketization-oriented reform, the widespread corruption of government officials and whether or not the fast economic growth in the last 30 years in China is sustainable have becom...Along with the deepening of China＇s marketization-oriented reform, the widespread corruption of government officials and whether or not the fast economic growth in the last 30 years in China is sustainable have become the two serious problems disturbing the Chinese government and people of all circles in China. This paper argues that something must be done in the construction of China＇s legal system and in its constitutional reform, otherwise the problems of prevalence of corruption will eventually hold back the high economic growth of China. Starting from the discussion of the differentiation of two concepts of ＂the rule by Law＂ and ＂the rule of Law,＂ this paper suggests that laws in China should be restored to their natural role as the incarnation of justice on the basis of jurisprudence reasoning, and instrumentalism, pragmatism and utilitarianism in China＇s current legal theory inherited from the traditional Chinese culture should be discarded. Otherwise, it will be impossible to restore the sacredness and authority of Law in China, and then it will take an unconscionable time to reach the state of ＂the Rule of Law＂ with constitutional democracy in China and there will be no way to tackle the problem of institutionalized corruption in the contemporary Chinese society once and for all.展开更多
文摘A study about some physicochemical parameters of Egbe reservoir was carried out from September 2005 to December 2006. The parameters include mean temperature, pH, conductivity, alkalinity, TSS, TDS, DO and BOD which have values of 28.7±0.9 ℃ ; 8.3±0.3; 831±172.5 μS/cm; 165.4±18.3 mg/L; 0.06±0.1 mg/L; 0.4±0.6 mg/L; 7.8±2.4 mg/L and 5.2±1.6mg/L, respectively. Temperature and pH were measured in the field using mercury-in-glass thermometer calibrated in degrees Celsius and pH meter, respectively. TSS and TDS were measured by grayimetric methods, while alkalinity was measured titrimetrically and DO and BOD were measured by Winkler＇s method. For the nutrients, nitrate was measured color±metrically, phosphate by Stannous Chloride method and sulphate by turbidimetric method. Mean concentration of nitrate, phosphate, and sulphate were 15.6±8.6 rag/L; 42.5±19.4 mg/L and 72.3±14.7 mg/L respectively. Nowadays, eutrophication of natural waters is one of the most significant causes of deterioration of water quality, and nitrates and phosphates are probably the key nutrients in controlling the growth of aquatic plants. Though the mean concentration of nitrates and phosphates in the reservoir water were within the acceptable limit, yet their concentrations in some locations of reservoir were high enough to encourage the growth of aquatic macrophytes which would increase productivities. Hence, it is necessary to check their further increase, and periodic monitoring and preventive measures must be adopted to save the reservoir from eutrophication.
文摘Cold types of wheat are the kinds of wheat whose canopy temperature keeps slightly lower and has a series of advantageous traits,which are fa- vorable for wheat to have high and stable yield and stable high quality.The paper expatiates on the ad- vances and important problems in the research of cold types of wheat and predicts the future of cold types of wheat and the influences of the research about cold types of wheat on other crops and plants.
文摘Along with the deepening of China＇s marketization-oriented reform, the widespread corruption of government officials and whether or not the fast economic growth in the last 30 years in China is sustainable have become the two serious problems disturbing the Chinese government and people of all circles in China. This paper argues that something must be done in the construction of China＇s legal system and in its constitutional reform, otherwise the problems of prevalence of corruption will eventually hold back the high economic growth of China. Starting from the discussion of the differentiation of two concepts of ＂the rule by Law＂ and ＂the rule of Law,＂ this paper suggests that laws in China should be restored to their natural role as the incarnation of justice on the basis of jurisprudence reasoning, and instrumentalism, pragmatism and utilitarianism in China＇s current legal theory inherited from the traditional Chinese culture should be discarded. Otherwise, it will be impossible to restore the sacredness and authority of Law in China, and then it will take an unconscionable time to reach the state of ＂the Rule of Law＂ with constitutional democracy in China and there will be no way to tackle the problem of institutionalized corruption in the contemporary Chinese society once and for all.
