The aim of this research was to investigate the influence of hydrogenated palm oil(HPO)added to a dairy goat diet on serum biochemistry and progesterone levels.Thirty pregnant Cilentana dairy goats were equally divide...The aim of this research was to investigate the influence of hydrogenated palm oil(HPO)added to a dairy goat diet on serum biochemistry and progesterone levels.Thirty pregnant Cilentana dairy goats were equally divided into 2 groups(control [CTR]and HPO groups).After kidding,concentrated feed for both groups was gradually increased up to 400 g/(animal d).and the HPO group received 50 g/(animal·d)of HPO.Supplementation with HPO significantly increased cholesterol levels(mg/dL, 63.80 vs.54.68 at 30 d.P<0.05;78.20 vs.58.00 at 60 d.P<0.05;83.80 vs.57.83 at 120 d.P<0.01)compared with the CTR group although no significant differences were detected for liver and kidney function indicators.Moreover,other biochemical parameters were not affected by HPO supplementation thus suggesting no change occurred in lipid and protein metabolism.Furthermore,a significant correlation was found between progesterone levels and serum cholesterol(r = 0.65,P≤0.01)although these were not significantly higher in HPO supplemented goats.The dose and time of HPO supplementation appears critical as regards assessing the limits between the risks and benefits of HPO supplementation in dairy goats.At the tested dose.HPO was well tolerated by the animals and may represent a useful tool to increase energy availability during highly demanding periods.展开更多
The efficient interaction of light with quantum emitters is crucial to most applications in nano and quantum photonics,such as sensing or quantum information processing.Effective excitation and photon extraction are p...The efficient interaction of light with quantum emitters is crucial to most applications in nano and quantum photonics,such as sensing or quantum information processing.Effective excitation and photon extraction are particularly important for the weak signals emitted by a single atom or molecule.Recent works have introduced novel collection strategies,which demonstrate that large efficiencies can be achieved by either planar dielectric antennas combined with high numerical aperture objectives or optical nanostructures that beam emission into a narrow angular distribution.However,the first approach requires the use of elaborate collection optics,while the latter is based on accurate positioning of the quantum emitter near complex nanoscale architectures;hence,sophisticated fabrication and experimental capabilities are needed.Here we present a theoretical and experimental demonstration of a planar optical antenna that beams light emitted by a single molecule,which results in increased collection efficiency at small angles without stringent requirements on the emitter position.The proposed device exhibits broadband performance and is spectrally scalable,and it is simple to fabricate and therefore applies to a wide range of quantum emitters.Our design finds immediate application in spectroscopy,quantum optics and sensing.展开更多
文摘The aim of this research was to investigate the influence of hydrogenated palm oil(HPO)added to a dairy goat diet on serum biochemistry and progesterone levels.Thirty pregnant Cilentana dairy goats were equally divided into 2 groups(control [CTR]and HPO groups).After kidding,concentrated feed for both groups was gradually increased up to 400 g/(animal d).and the HPO group received 50 g/(animal·d)of HPO.Supplementation with HPO significantly increased cholesterol levels(mg/dL, 63.80 vs.54.68 at 30 d.P<0.05;78.20 vs.58.00 at 60 d.P<0.05;83.80 vs.57.83 at 120 d.P<0.01)compared with the CTR group although no significant differences were detected for liver and kidney function indicators.Moreover,other biochemical parameters were not affected by HPO supplementation thus suggesting no change occurred in lipid and protein metabolism.Furthermore,a significant correlation was found between progesterone levels and serum cholesterol(r = 0.65,P≤0.01)although these were not significantly higher in HPO supplemented goats.The dose and time of HPO supplementation appears critical as regards assessing the limits between the risks and benefits of HPO supplementation in dairy goats.At the tested dose.HPO was well tolerated by the animals and may represent a useful tool to increase energy availability during highly demanding periods.
基金supported by COST(European Cooperation in Science and Technology).
文摘The efficient interaction of light with quantum emitters is crucial to most applications in nano and quantum photonics,such as sensing or quantum information processing.Effective excitation and photon extraction are particularly important for the weak signals emitted by a single atom or molecule.Recent works have introduced novel collection strategies,which demonstrate that large efficiencies can be achieved by either planar dielectric antennas combined with high numerical aperture objectives or optical nanostructures that beam emission into a narrow angular distribution.However,the first approach requires the use of elaborate collection optics,while the latter is based on accurate positioning of the quantum emitter near complex nanoscale architectures;hence,sophisticated fabrication and experimental capabilities are needed.Here we present a theoretical and experimental demonstration of a planar optical antenna that beams light emitted by a single molecule,which results in increased collection efficiency at small angles without stringent requirements on the emitter position.The proposed device exhibits broadband performance and is spectrally scalable,and it is simple to fabricate and therefore applies to a wide range of quantum emitters.Our design finds immediate application in spectroscopy,quantum optics and sensing.
