The main aim of the paper is to examine the concentration of the longitudinal dispersion phenomenon arising in fluid flow through porous media. These phenomenon yields a partial differential equation namely Burger’s ...The main aim of the paper is to examine the concentration of the longitudinal dispersion phenomenon arising in fluid flow through porous media. These phenomenon yields a partial differential equation namely Burger’s equation, which is solved by mixture of the new integral transform and the homotopy perturbation method under suitable conditions and the standard assumption. This method provides an analytical approximation in a rapidly convergent sequence with in exclusive manner computed terms. Its rapid convergence shows that the method is trustworthy and introduces a significant improvement in solving nonlinear partial differential equations over existing methods. It is concluded that the behaviour of concentration in longitudinal dispersion phenomenon is decreases as distance x is increasing with fixed time t > 0 and slightly increases with time t.展开更多
In this paper, we study day-of-the-week effects in stock retums across different industry sectors in the New Zealand market. Unlike other studies on this market, we examine weekday seasonality using daily stock return...In this paper, we study day-of-the-week effects in stock retums across different industry sectors in the New Zealand market. Unlike other studies on this market, we examine weekday seasonality using daily stock return data of four market indexes and 16 industry sectors for the period from October 1, 1997 to April 16, 2009. We do not find significant Monday anomalies of the market index, large capitalization stock index and all industry sectors except for the property sector. Our finding is inconsistent with the literature on the New Zealand stock market. However, we find that the mid and small capitalization stocks have significant negative returns on Mondays than on other weekdays, which is consistent with the previous studies in some other markets.展开更多
As it is known a complete coverage of cotton(Gossypium hirsutum L.) genome with hypoaneuploids is not still realized.Therefore the detection of new types of aneuploids especially in different cytogenetic collections i...As it is known a complete coverage of cotton(Gossypium hirsutum L.) genome with hypoaneuploids is not still realized.Therefore the detection of new types of aneuploids especially in different cytogenetic collections is very useful.In Uzbekistan,long-term investigations towards development展开更多
The People’s Bank of China promulgated andput in force days ago Regulation on Foreign Ex-change Accounts in China, according to which for-eign individuals or legal persons can open foreignexchange accounts to keep fo...The People’s Bank of China promulgated andput in force days ago Regulation on Foreign Ex-change Accounts in China, according to which for-eign individuals or legal persons can open foreignexchange accounts to keep foreign exchange fortrading B stock in China.As stipulated by the regulation, as to foreigncurrency stock accounts opened bydomestic insti-tutions with the income from issuing stocks, theirreceipt shall be income from issuing stocks anddisbursement shall be used for the purposes pro-vided for in the prospectus approved by securitiessupervising organs; as to foreign exchange ac-counts opened by foreign individuals or legal per-sons for trading B stocks in China.their receipt shallbe the income of trading stocks and foreign ex-change remitted or brought in from abroad, andtheir disbursement shall be used for buying andselling stocks.As provided in the regulation, for the purposeof opening B stock account to trade B stocks展开更多
The paper deals with the studies on the cell abundance, the composition of dominant species, size fractionated biomass and productivity of phytoplankton, new production, the environmentally restricted mechanism in the...The paper deals with the studies on the cell abundance, the composition of dominant species, size fractionated biomass and productivity of phytoplankton, new production, the environmentally restricted mechanism in the Prydz Bay and the adjacent Indian sector of the Southern Ocean during the austral summer 1998/1999. The results showed that there was marked feature of spatial zonation in the sea areas investigated. In the Prydz Bay and its adjacent continental shelf, the biomass and productivity of phytoplankton were high; those of continental slope and open ocean area were obviously low. The nutrient concentration had opposite distribution trend, due to the consumption of phytoplankton. It mainly affected by the vertical stability of water column, grazing pressure of zooplankton, temperature and light etc. The results of size-fractionation showed that the average contribution of netplankton to total chlorophyll a in studied sea areas was 52.2 %, those of nano- and picoplankton were 29.4 % and 18.4 %, respectively. The average contribution of netplankton to total primary production was 52.4 %, those of nano- and picoplankton were 28.7 % and 18.9 %, separately. It is same as previous conclusion that the contribution of picoplankton to productivity is slightly larger than that to biomass of phytoplankton communities. The average new production and f-ratio were 230.6 mg/ (m(2.)d) and 0.43, respectively.展开更多
文摘The main aim of the paper is to examine the concentration of the longitudinal dispersion phenomenon arising in fluid flow through porous media. These phenomenon yields a partial differential equation namely Burger’s equation, which is solved by mixture of the new integral transform and the homotopy perturbation method under suitable conditions and the standard assumption. This method provides an analytical approximation in a rapidly convergent sequence with in exclusive manner computed terms. Its rapid convergence shows that the method is trustworthy and introduces a significant improvement in solving nonlinear partial differential equations over existing methods. It is concluded that the behaviour of concentration in longitudinal dispersion phenomenon is decreases as distance x is increasing with fixed time t > 0 and slightly increases with time t.
文摘In this paper, we study day-of-the-week effects in stock retums across different industry sectors in the New Zealand market. Unlike other studies on this market, we examine weekday seasonality using daily stock return data of four market indexes and 16 industry sectors for the period from October 1, 1997 to April 16, 2009. We do not find significant Monday anomalies of the market index, large capitalization stock index and all industry sectors except for the property sector. Our finding is inconsistent with the literature on the New Zealand stock market. However, we find that the mid and small capitalization stocks have significant negative returns on Mondays than on other weekdays, which is consistent with the previous studies in some other markets.
文摘As it is known a complete coverage of cotton(Gossypium hirsutum L.) genome with hypoaneuploids is not still realized.Therefore the detection of new types of aneuploids especially in different cytogenetic collections is very useful.In Uzbekistan,long-term investigations towards development
文摘The People’s Bank of China promulgated andput in force days ago Regulation on Foreign Ex-change Accounts in China, according to which for-eign individuals or legal persons can open foreignexchange accounts to keep foreign exchange fortrading B stock in China.As stipulated by the regulation, as to foreigncurrency stock accounts opened bydomestic insti-tutions with the income from issuing stocks, theirreceipt shall be income from issuing stocks anddisbursement shall be used for the purposes pro-vided for in the prospectus approved by securitiessupervising organs; as to foreign exchange ac-counts opened by foreign individuals or legal per-sons for trading B stocks in China.their receipt shallbe the income of trading stocks and foreign ex-change remitted or brought in from abroad, andtheir disbursement shall be used for buying andselling stocks.As provided in the regulation, for the purposeof opening B stock account to trade B stocks
文摘The paper deals with the studies on the cell abundance, the composition of dominant species, size fractionated biomass and productivity of phytoplankton, new production, the environmentally restricted mechanism in the Prydz Bay and the adjacent Indian sector of the Southern Ocean during the austral summer 1998/1999. The results showed that there was marked feature of spatial zonation in the sea areas investigated. In the Prydz Bay and its adjacent continental shelf, the biomass and productivity of phytoplankton were high; those of continental slope and open ocean area were obviously low. The nutrient concentration had opposite distribution trend, due to the consumption of phytoplankton. It mainly affected by the vertical stability of water column, grazing pressure of zooplankton, temperature and light etc. The results of size-fractionation showed that the average contribution of netplankton to total chlorophyll a in studied sea areas was 52.2 %, those of nano- and picoplankton were 29.4 % and 18.4 %, respectively. The average contribution of netplankton to total primary production was 52.4 %, those of nano- and picoplankton were 28.7 % and 18.9 %, separately. It is same as previous conclusion that the contribution of picoplankton to productivity is slightly larger than that to biomass of phytoplankton communities. The average new production and f-ratio were 230.6 mg/ (m(2.)d) and 0.43, respectively.
