The anthropophilic and peridomestic female Aedes aegypti bites humans to suck blood to maturate fertilized eggs, which are laid in appropriate recipients (breeding sites). These eggs can hatch in contact with water re...The anthropophilic and peridomestic female Aedes aegypti bites humans to suck blood to maturate fertilized eggs, which are laid in appropriate recipients (breeding sites). These eggs can hatch in contact with water releasing larvae, or can be stored in a dormant state (quiescence), which last for extended periods. Taking into account this ability of eggs of A. aegypti mosquitoes, mathematical model is developed taking into account four successive quiescence stages. The analysis of the model shows that the ability of the eggs surviving in dormant state in adverse abiotic conditions, depending on the model parameters, can increase the fitness of mosquito population;in other words, the capacity of the mosquitoes generating offsprings is increased.展开更多
It was proved by Bahouri et al.[9]that the Schrodinger equation on the Heisenberg group H^(d),involving the sublaplacian,is an example of a totally non-dispersive evolution equation:for this reason global dispersive e...It was proved by Bahouri et al.[9]that the Schrodinger equation on the Heisenberg group H^(d),involving the sublaplacian,is an example of a totally non-dispersive evolution equation:for this reason global dispersive estimates cannot hold.This paper aims at establishing local dispersive estimates on H^(d) for the linear Schrodinger equation,by a refined study of the Schrodinger ker-nel St on H^(d).The sharpness of these estimates is discussed through several examples.Our approach,based on the explicit formula of the heat kernel on H^(d) derived by Gaveau[19],is achieved by combining complex analysis and Fourier-Heisenberg tools.As a by-product of our results we establish local Stri-chartz estimates and prove that the kernel St concentrates on quantized hori-zontal hyperplanes of H^(d).展开更多
Dear Editor,Base editors(BEs)based on the CRISPR/Cas9 system,including cytosine base editors and adenine base editors,which can efficiently perform four transition mutations(C·G-to-T·A and A·T-to-G·...Dear Editor,Base editors(BEs)based on the CRISPR/Cas9 system,including cytosine base editors and adenine base editors,which can efficiently perform four transition mutations(C·G-to-T·A and A·T-to-G·C),have been well studied and widely used to produce base mutations in a variety of organisms,including in plants such as rice.展开更多
N, N-Dimehtylaniline (DMA)-benzoyl peroxide (BPO) as an effective initiator in the free radical polymerization is well known as an organic redox initiator. Lal et al. have reported that a mixture of DMA and saccharin ...N, N-Dimehtylaniline (DMA)-benzoyl peroxide (BPO) as an effective initiator in the free radical polymerization is well known as an organic redox initiator. Lal et al. have reported that a mixture of DMA and saccharin would initiate methyl展开更多
Ⅰ. INTRODUCTION There are two worldwide permanent networks for determining pole motion using Doppler tracking data: the DMA and the MEDOC respectively under the charge of Defence Mapping Agency in USA and GRGS/CNES i...Ⅰ. INTRODUCTION There are two worldwide permanent networks for determining pole motion using Doppler tracking data: the DMA and the MEDOC respectively under the charge of Defence Mapping Agency in USA and GRGS/CNES in France. The precise ephemeris展开更多
I. INTRODUCTION The photopolymerization of methyl methacrylate sensitized with N, N-dimethylani-line(DMA) was described by Yokota et al. in 1972. Although they proposed a mechanism through the formation of exciplex fr...I. INTRODUCTION The photopolymerization of methyl methacrylate sensitized with N, N-dimethylani-line(DMA) was described by Yokota et al. in 1972. Although they proposed a mechanism through the formation of exciplex from the excited monomer and amine and its decomposition to generate the initiating radical, the formation of exciplex, however,展开更多
文摘The anthropophilic and peridomestic female Aedes aegypti bites humans to suck blood to maturate fertilized eggs, which are laid in appropriate recipients (breeding sites). These eggs can hatch in contact with water releasing larvae, or can be stored in a dormant state (quiescence), which last for extended periods. Taking into account this ability of eggs of A. aegypti mosquitoes, mathematical model is developed taking into account four successive quiescence stages. The analysis of the model shows that the ability of the eggs surviving in dormant state in adverse abiotic conditions, depending on the model parameters, can increase the fitness of mosquito population;in other words, the capacity of the mosquitoes generating offsprings is increased.
文摘It was proved by Bahouri et al.[9]that the Schrodinger equation on the Heisenberg group H^(d),involving the sublaplacian,is an example of a totally non-dispersive evolution equation:for this reason global dispersive estimates cannot hold.This paper aims at establishing local dispersive estimates on H^(d) for the linear Schrodinger equation,by a refined study of the Schrodinger ker-nel St on H^(d).The sharpness of these estimates is discussed through several examples.Our approach,based on the explicit formula of the heat kernel on H^(d) derived by Gaveau[19],is achieved by combining complex analysis and Fourier-Heisenberg tools.As a by-product of our results we establish local Stri-chartz estimates and prove that the kernel St concentrates on quantized hori-zontal hyperplanes of H^(d).
文摘Dear Editor,Base editors(BEs)based on the CRISPR/Cas9 system,including cytosine base editors and adenine base editors,which can efficiently perform four transition mutations(C·G-to-T·A and A·T-to-G·C),have been well studied and widely used to produce base mutations in a variety of organisms,including in plants such as rice.
文摘N, N-Dimehtylaniline (DMA)-benzoyl peroxide (BPO) as an effective initiator in the free radical polymerization is well known as an organic redox initiator. Lal et al. have reported that a mixture of DMA and saccharin would initiate methyl
文摘Ⅰ. INTRODUCTION There are two worldwide permanent networks for determining pole motion using Doppler tracking data: the DMA and the MEDOC respectively under the charge of Defence Mapping Agency in USA and GRGS/CNES in France. The precise ephemeris
文摘I. INTRODUCTION The photopolymerization of methyl methacrylate sensitized with N, N-dimethylani-line(DMA) was described by Yokota et al. in 1972. Although they proposed a mechanism through the formation of exciplex from the excited monomer and amine and its decomposition to generate the initiating radical, the formation of exciplex, however,
