Interactions of ciprofloxacin hydrochloride(CPFH)with sodium dodecyl sulfate(SDS)were investigated by conductivity measurement in H2O/electrolyte solutions(NaCl,Na2SO4&Na3PO4)over 298.15–318.15 K temperature rang...Interactions of ciprofloxacin hydrochloride(CPFH)with sodium dodecyl sulfate(SDS)were investigated by conductivity measurement in H2O/electrolyte solutions(NaCl,Na2SO4&Na3PO4)over 298.15–318.15 K temperature range(with 5 K interval)considering the human body temperature.In all cases,two critical micelle concentrations(c*)were observed which are increased in the presence of drug and decreased in the presence of salts enunciating the presence of interaction amongst the studied components.For(CPFH+SDS)system in the presence of salt,the c*values at 303.15 K and I=0.50 mmol·kg^-1 followed the order:CNaCl>CNa2SO4>CNa3PO4.TheΔG1,m0 andΔG2,m0values are found to be negative for all systems that show that the micellization process is thermodynamically spontaneous.For(CPFH+SDS)system in water,theΔHm0&ΔSm0 values reveal that the micellization processes is both entropy dominated in almost all cases.In the occurrence of electrolytes,ΔHm0 andΔSm0 values indicate that micellization processes are both entropy&enthalpy restricted at upper temperature but it becomes totally entropy dependent at higher temperature.The higher positiveΔSm0 values indicate the enhanced hydrophobic interaction in presence of salts.The enthalpy-entropy compensation was determined from the linear relationship betweenΔHm0 andΔSm0 values in every state.Different transfer energies as well as compensation temperature and intrinsic enthalpy were also evaluated and the behaviors were comparable to other biological system.展开更多
The linear dispersion relation of a trapezoidally corrugated slow wave structure （TCSWS） is analyzed and presented. The size parameters of the TCSWS are chosen in such a way that they operate in the x-band frequency...The linear dispersion relation of a trapezoidally corrugated slow wave structure （TCSWS） is analyzed and presented. The size parameters of the TCSWS are chosen in such a way that they operate in the x-band frequency range. The dispersion relation is solved by utilizing the Rayleigh-Fourier method by expressing the radial function in terms of the Fourier series. A highly accurate synthetic technique is also applied to determine the complete dispersion characteristics from experimentally measured resonances （cold test）. Periodic structures resonate at specific frequencies when the terminals are shorted numerical calculation, synthetic technique and cold appropriately. The dispersion characteristics obtained from test are compared, and an excellent agreement is achieved.展开更多
This work was conducted to compare the potentiality between BLRI Napier-3(BN-3)and Pakchong(PK)fodders.In a completely randomized design(CRD)layout,10 plots(5 m′5 m each)were prepared and stem cuttings were transplan...This work was conducted to compare the potentiality between BLRI Napier-3(BN-3)and Pakchong(PK)fodders.In a completely randomized design(CRD)layout,10 plots(5 m′5 m each)were prepared and stem cuttings were transplanted.Fodder plants were harvested at 70,80 and 90 days after plantation(DAP)followed by making silage.Ten Red Chittagong Cattle(RCC)growing bull calves were selected and equally divided into two treatment groups fed only silages for nutrient utilization and growth evaluation.The highest biomass yield(69.3 ton/ha)and plant height(104.6 cm)were observed in PK at 90 DAP.The highest leaf weight(498.6 g/plant)and leaf to stem ratio(LSR)(1.53)were observed in BN-3 at 70 DAP,which was decreased gradually in progressing maturity.Conversely,stem weight was increased with progressing maturity.Dry matter(DM)(24.71%),total ash(8.35%)and acid detergent fiber(ADF)(61.89%)in PK silage were significantly higher.On the other hand,crude protein(CP)(9.86%),organic matter(OM)(91.65%)and neutral detergent fiber(NDF)(88.06%)in PK silage did not differ with BN-3 silage.Dry matter intake(DMI)and crude protein intake(CPI)from PK silage(2.25 kg/day/animal and 0.22 kg/day/animal)were significantly higher.Digestibility of DM(55.07%),CP(62.35%),OM(57.85%),total ash(30.89%),ADF(73.02%)and NDF(78.19%)for PK silage were significantly higher.N-intake(35.57 g/d)from PK silage was significantly higher,although,N-retention did not differ significantly.There were no significant differences in weight gain of calves fed PK(117 g/d)and BN-3(68 g/d).It can be concluded that PK silage is comparatively better than BN-3 in respect to biomass yield,digestibility and nutrient utilization in growing bull calves.展开更多
The propagation characteristics of the surface-plasmon-polariton （SPP） mode in the single interface of silver （Ag） and gallium lanthanum sulfide （GLS） have been studied both analytically and numerically. The obt...The propagation characteristics of the surface-plasmon-polariton （SPP） mode in the single interface of silver （Ag） and gallium lanthanum sulfide （GLS） have been studied both analytically and numerically. The obtained numerical results show an excellent agreement with the analytical ones. The locations of the spatial resonance point along the direction of propagation were determined for the dielectric and the metal.展开更多
基金funded by the Deanship of Scientific Research(DSR)King Abdulaziz University,Jeddah,under grant No.(D-403-130-1441).
文摘Interactions of ciprofloxacin hydrochloride(CPFH)with sodium dodecyl sulfate(SDS)were investigated by conductivity measurement in H2O/electrolyte solutions(NaCl,Na2SO4&Na3PO4)over 298.15–318.15 K temperature range(with 5 K interval)considering the human body temperature.In all cases,two critical micelle concentrations(c*)were observed which are increased in the presence of drug and decreased in the presence of salts enunciating the presence of interaction amongst the studied components.For(CPFH+SDS)system in the presence of salt,the c*values at 303.15 K and I=0.50 mmol·kg^-1 followed the order:CNaCl>CNa2SO4>CNa3PO4.TheΔG1,m0 andΔG2,m0values are found to be negative for all systems that show that the micellization process is thermodynamically spontaneous.For(CPFH+SDS)system in water,theΔHm0&ΔSm0 values reveal that the micellization processes is both entropy dominated in almost all cases.In the occurrence of electrolytes,ΔHm0 andΔSm0 values indicate that micellization processes are both entropy&enthalpy restricted at upper temperature but it becomes totally entropy dependent at higher temperature.The higher positiveΔSm0 values indicate the enhanced hydrophobic interaction in presence of salts.The enthalpy-entropy compensation was determined from the linear relationship betweenΔHm0 andΔSm0 values in every state.Different transfer energies as well as compensation temperature and intrinsic enthalpy were also evaluated and the behaviors were comparable to other biological system.
文摘The linear dispersion relation of a trapezoidally corrugated slow wave structure （TCSWS） is analyzed and presented. The size parameters of the TCSWS are chosen in such a way that they operate in the x-band frequency range. The dispersion relation is solved by utilizing the Rayleigh-Fourier method by expressing the radial function in terms of the Fourier series. A highly accurate synthetic technique is also applied to determine the complete dispersion characteristics from experimentally measured resonances （cold test）. Periodic structures resonate at specific frequencies when the terminals are shorted numerical calculation, synthetic technique and cold appropriately. The dispersion characteristics obtained from test are compared, and an excellent agreement is achieved.
文摘This work was conducted to compare the potentiality between BLRI Napier-3(BN-3)and Pakchong(PK)fodders.In a completely randomized design(CRD)layout,10 plots(5 m′5 m each)were prepared and stem cuttings were transplanted.Fodder plants were harvested at 70,80 and 90 days after plantation(DAP)followed by making silage.Ten Red Chittagong Cattle(RCC)growing bull calves were selected and equally divided into two treatment groups fed only silages for nutrient utilization and growth evaluation.The highest biomass yield(69.3 ton/ha)and plant height(104.6 cm)were observed in PK at 90 DAP.The highest leaf weight(498.6 g/plant)and leaf to stem ratio(LSR)(1.53)were observed in BN-3 at 70 DAP,which was decreased gradually in progressing maturity.Conversely,stem weight was increased with progressing maturity.Dry matter(DM)(24.71%),total ash(8.35%)and acid detergent fiber(ADF)(61.89%)in PK silage were significantly higher.On the other hand,crude protein(CP)(9.86%),organic matter(OM)(91.65%)and neutral detergent fiber(NDF)(88.06%)in PK silage did not differ with BN-3 silage.Dry matter intake(DMI)and crude protein intake(CPI)from PK silage(2.25 kg/day/animal and 0.22 kg/day/animal)were significantly higher.Digestibility of DM(55.07%),CP(62.35%),OM(57.85%),total ash(30.89%),ADF(73.02%)and NDF(78.19%)for PK silage were significantly higher.N-intake(35.57 g/d)from PK silage was significantly higher,although,N-retention did not differ significantly.There were no significant differences in weight gain of calves fed PK(117 g/d)and BN-3(68 g/d).It can be concluded that PK silage is comparatively better than BN-3 in respect to biomass yield,digestibility and nutrient utilization in growing bull calves.
文摘The propagation characteristics of the surface-plasmon-polariton （SPP） mode in the single interface of silver （Ag） and gallium lanthanum sulfide （GLS） have been studied both analytically and numerically. The obtained numerical results show an excellent agreement with the analytical ones. The locations of the spatial resonance point along the direction of propagation were determined for the dielectric and the metal.
