The present paper deals with stridulation apparatuses,observed by SEM,of 6 species of the genus Agromyza from China (2 species among them are newly recorded to China).Some morphological terms are proposed for the ...The present paper deals with stridulation apparatuses,observed by SEM,of 6 species of the genus Agromyza from China (2 species among them are newly recorded to China).Some morphological terms are proposed for the first time,and a key to 6 species of Agromyza applied by the characteristics of stridulatory file is given.We also scheme out a diagram showing relationship between two stridulatory file types.展开更多
A356alloy was used as the base metal to produce boron carbide(B4C)/A356composites using friction stir processing(FSP).The microstructural and mechanical properties of B4C/A356composites were optimized using artificial...A356alloy was used as the base metal to produce boron carbide(B4C)/A356composites using friction stir processing(FSP).The microstructural and mechanical properties of B4C/A356composites were optimized using artificial neural network(ANN)and non-dominated sorting genetic algorithm-II(NSGA-II).Firstly,microstructural properties of the composites fabricated in different processing conditions were investigated.Results show that FSP parameters such as rotational speed,traverse speed and tool pin profile significantly affect the size of the primary silicon(Si)particles of the base metal,as well as the dispersion quality and volume fraction of reinforcing B4C particles in the composite layer.Higher rotational to traverse speeds ratio accompanied by threaded pin profile leads to better particles distribution,finer Si particles and smaller B4C agglomerations.Secondly,hardness and tensile tests were performed to study mechanical properties of the composites.FSP changes the fracture mechanism from brittle form in the as-received metal to very ductile form in the FSPed specimens.Then,a relation between the FSP parameters and microstructural and mechanical properties of the composites was established using ANN.A modified NSGA-II by incorporating diversity preserving mechanism called theεelimination algorithm was employed to obtain the Pareto-optimal set of FSP parameters.展开更多
An entomological survey of Phlebotomine sand flies （Diptera： Psychodidae） was carried out in three sectors of Foum Jamgta region （province of Azilal, Morocco） during the year 2010. Morphological identification wa...An entomological survey of Phlebotomine sand flies （Diptera： Psychodidae） was carried out in three sectors of Foum Jamgta region （province of Azilal, Morocco） during the year 2010. Morphological identification was performed on a total of 1,152 sand flies （23% females and 77% males） collected by sticky paper traps. 80% of the total collected flies were identified as Phlebotomus （Paraphlebotomus） sergenti （Parrot） （57%） and Phlebotomus （Larroussius） longicuspis （Nitzulescu） （23%）. In addition to these dominant species, four other species were found, Phlebotomus （Phlebotomus） papatasi （Scopoli）, Sergentomyia （Sergentomyia） minuta （Rondani）, Phlebotomus （Larroussius） perniciosus （Newstead） and Phlebotomus （Paraphlebotomus） chabaudi （Croset）. Overall, the population dynamics show a yearly bimodal pattern related to rainfall and temperature, and with high density around human dwellings. The spatiotemporal distribution of sand fly species was helpful to discuss strategies that might be useful in controlling cutaneous leishmaniasis transmission in this endemic focus.展开更多
The mass entransy describes the mass-diffusion ability of the solution system, and the mass-diffusion process with the finite concentration difference always leads to the mass-entransy dissipation. This paper studies ...The mass entransy describes the mass-diffusion ability of the solution system, and the mass-diffusion process with the finite concentration difference always leads to the mass-entransy dissipation. This paper studies the equimolar reverse constant-temperature mass-diffusion process with Fick's law( g∝Δ(c)). The optimal concentration paths for the MED(Minimum Entransy Dissipation) are derived and compared with those for the MEG(Minimum Entropy Generation) and CCR(Constant Concentration Ratio) operations. It is indicated that the strategy of the MED is equivalent to that of the CCD(Constant Concentration Difference) of the same component; whether the MED or the MEG is selected as the optimization objective, the strategy of the CCD is much better than that of the CCR.展开更多
OBJECTIVE:To evaluate the effects of feet reflexology versus segmental massage in reducing pain and its intensity, frequency and duration of the attacks in females suffering from migraine.METHODS:Forty eight females a...OBJECTIVE:To evaluate the effects of feet reflexology versus segmental massage in reducing pain and its intensity, frequency and duration of the attacks in females suffering from migraine.METHODS:Forty eight females aged 33-58, suffering from migraine for 2 to 10 years were included in this study from November 2013 to November2015.The study protocol was carried out in Department of Chronic Diseases at the Regional Hospital in Zywiec.In the reflexology group(RG) the patients received a series of 10 treatments 2 times per week; in the segmental massage group(SMG) the patients received a series of 15 treatments 3 times per week.Pain during migraine attacks was assessed using the visual analog scale(VAS), and headache features such as intensity(IA), frequency(FA) and duration(DA) of attacks were assessed before the treatment, just after the treatment, 3months after the treatment.RESULTS:All variables(VAS, IA, FA and DA) decreased within RG and SMG 3 months after the treatment in compare with the baseline values, and the differences were statistically significant.The differences between groups were also statistically significant.CONCLUSION:Feet reflexology and segmental massage provide a safe alternative for the pharmacological treatment of migraine.The patients with migraine obtain significant health benefits with feet reflexology.展开更多
文摘The present paper deals with stridulation apparatuses,observed by SEM,of 6 species of the genus Agromyza from China (2 species among them are newly recorded to China).Some morphological terms are proposed for the first time,and a key to 6 species of Agromyza applied by the characteristics of stridulatory file is given.We also scheme out a diagram showing relationship between two stridulatory file types.
文摘A356alloy was used as the base metal to produce boron carbide(B4C)/A356composites using friction stir processing(FSP).The microstructural and mechanical properties of B4C/A356composites were optimized using artificial neural network(ANN)and non-dominated sorting genetic algorithm-II(NSGA-II).Firstly,microstructural properties of the composites fabricated in different processing conditions were investigated.Results show that FSP parameters such as rotational speed,traverse speed and tool pin profile significantly affect the size of the primary silicon(Si)particles of the base metal,as well as the dispersion quality and volume fraction of reinforcing B4C particles in the composite layer.Higher rotational to traverse speeds ratio accompanied by threaded pin profile leads to better particles distribution,finer Si particles and smaller B4C agglomerations.Secondly,hardness and tensile tests were performed to study mechanical properties of the composites.FSP changes the fracture mechanism from brittle form in the as-received metal to very ductile form in the FSPed specimens.Then,a relation between the FSP parameters and microstructural and mechanical properties of the composites was established using ANN.A modified NSGA-II by incorporating diversity preserving mechanism called theεelimination algorithm was employed to obtain the Pareto-optimal set of FSP parameters.
文摘An entomological survey of Phlebotomine sand flies （Diptera： Psychodidae） was carried out in three sectors of Foum Jamgta region （province of Azilal, Morocco） during the year 2010. Morphological identification was performed on a total of 1,152 sand flies （23% females and 77% males） collected by sticky paper traps. 80% of the total collected flies were identified as Phlebotomus （Paraphlebotomus） sergenti （Parrot） （57%） and Phlebotomus （Larroussius） longicuspis （Nitzulescu） （23%）. In addition to these dominant species, four other species were found, Phlebotomus （Phlebotomus） papatasi （Scopoli）, Sergentomyia （Sergentomyia） minuta （Rondani）, Phlebotomus （Larroussius） perniciosus （Newstead） and Phlebotomus （Paraphlebotomus） chabaudi （Croset）. Overall, the population dynamics show a yearly bimodal pattern related to rainfall and temperature, and with high density around human dwellings. The spatiotemporal distribution of sand fly species was helpful to discuss strategies that might be useful in controlling cutaneous leishmaniasis transmission in this endemic focus.
基金supported by the National Natural Science Foundation of China (Grant Nos. 51576207 & 51356001)
文摘The mass entransy describes the mass-diffusion ability of the solution system, and the mass-diffusion process with the finite concentration difference always leads to the mass-entransy dissipation. This paper studies the equimolar reverse constant-temperature mass-diffusion process with Fick's law( g∝Δ(c)). The optimal concentration paths for the MED(Minimum Entransy Dissipation) are derived and compared with those for the MEG(Minimum Entropy Generation) and CCR(Constant Concentration Ratio) operations. It is indicated that the strategy of the MED is equivalent to that of the CCD(Constant Concentration Difference) of the same component; whether the MED or the MEG is selected as the optimization objective, the strategy of the CCD is much better than that of the CCR.
文摘OBJECTIVE:To evaluate the effects of feet reflexology versus segmental massage in reducing pain and its intensity, frequency and duration of the attacks in females suffering from migraine.METHODS:Forty eight females aged 33-58, suffering from migraine for 2 to 10 years were included in this study from November 2013 to November2015.The study protocol was carried out in Department of Chronic Diseases at the Regional Hospital in Zywiec.In the reflexology group(RG) the patients received a series of 10 treatments 2 times per week; in the segmental massage group(SMG) the patients received a series of 15 treatments 3 times per week.Pain during migraine attacks was assessed using the visual analog scale(VAS), and headache features such as intensity(IA), frequency(FA) and duration(DA) of attacks were assessed before the treatment, just after the treatment, 3months after the treatment.RESULTS:All variables(VAS, IA, FA and DA) decreased within RG and SMG 3 months after the treatment in compare with the baseline values, and the differences were statistically significant.The differences between groups were also statistically significant.CONCLUSION:Feet reflexology and segmental massage provide a safe alternative for the pharmacological treatment of migraine.The patients with migraine obtain significant health benefits with feet reflexology.
