AIM: To analyze the prevalence of thiopurine-methyltransferase (TPMT) genotypes and their association with drug toxicity in inflammatory bowel disease (IBD) patients from southeastern Brazil.
A wavelet based identification method for linear time-varying systems is presented,and the ridge and skeleton of the continuous wavelet transform of free response is used to extract time-varying parameters. The stiffn...A wavelet based identification method for linear time-varying systems is presented,and the ridge and skeleton of the continuous wavelet transform of free response is used to extract time-varying parameters. The stiffness and damping coefficients of single-degree-of—freedom systems,frequencies and damping ratios of multi-degree-of-freedom systems are estimated without any prior information of systems. The proposed method is applied to linear time-varying systems with both abrupt and smooth variation parameters. Gaussian white noise is added to the response to test the anti-noise performance of the algorithm. The simulation results show that the proposed method is capable of accurately tracking the variation of the systems.展开更多
Currently,the development of excellent red phosphor materials has attracted much attention in daily lighting,backlit displays,optical thermometry sensors and plant growthfields.However,spectral peak position modulatio...Currently,the development of excellent red phosphor materials has attracted much attention in daily lighting,backlit displays,optical thermometry sensors and plant growthfields.However,spectral peak position modulation and bandwidth are still crucial challenges.Herein,we design Eu^(3+)→Mn^(4+)energy transfer in the Lu_(3)Al_(5)O_(12)(LuAG)garnet host.On the one hand,photoluminescence tuning from narrow orangish-red emission(593 nm)to narrow deep-red light(668 nm)is successfully obtained,and the energy transfer effciency reaches 47%.On the other hand,LuAG:Eu^(3+)exhibits anti-thermal-quenching properties;that is,the peak intensity reaches 166%at 200℃of the initial intensity at 25℃.By designing Eu^(3+)→Mn^(4+)energy transfer,Mn^(4+)thermal quenching performance is dramatically improved.The photo luminescence peak intensities at 668 nm for LuAG:0.01Mn^(4+)and LuAG:0.05Eu^(3+),0.01Mn^(4+)retain 3.26%and 26%at 200℃of the original intensity at 25℃.The corresponding energy transfer mechanism to improve thermal quenching is revealed.According to thefluorescence intensity ratio technique,the maximum values of Sa and Sr for LuAG:0.05Eu^(3+),0.01Mn^(4+)are 0.07 K−1 and 0.7%K^(−1)at 303 K.The temp erature sensitivity calculation indicates that LuAG:Eu^(3+),Mn^(4+)phosphors can act as promising candidates in optical thermometry sensors.This work provides an insight to achieve narrow red emission modulation and thermal quenching improvement.展开更多
Plate-pin heat sinks are widely used for the electronic cooling system,internal combustion IC engine,cooling of gas turbine blades and other different applications to enhance the thermal performance of heat sinks due ...Plate-pin heat sinks are widely used for the electronic cooling system,internal combustion IC engine,cooling of gas turbine blades and other different applications to enhance the thermal performance of heat sinks due to simplicity,low cost,and a reliable manufacturing process.However,compact heat sinks give higher pressure drop compared with other types of heat sinks.The purpose of this article is to summarise the main advantages and disadvantages of the compact heat sink with some recommendation studies for future works heat sink thermal airflow experiment and simulations.Furthermore,the research attempts to highlight the importance of balance the relationship between the hydraulic performance and the thermal performance of compact heat sinks。展开更多
his thesis mainly discusses Chinese negative transfer in English learning--Chinglish and does some error analysis about it. Furthermore, how we look at Chinglish? And some measureswe should take to correct Chinglish.
基金Supported by Brazilian research agencies CNPq and FAPERJ for financial support
文摘AIM: To analyze the prevalence of thiopurine-methyltransferase (TPMT) genotypes and their association with drug toxicity in inflammatory bowel disease (IBD) patients from southeastern Brazil.
文摘A wavelet based identification method for linear time-varying systems is presented,and the ridge and skeleton of the continuous wavelet transform of free response is used to extract time-varying parameters. The stiffness and damping coefficients of single-degree-of—freedom systems,frequencies and damping ratios of multi-degree-of-freedom systems are estimated without any prior information of systems. The proposed method is applied to linear time-varying systems with both abrupt and smooth variation parameters. Gaussian white noise is added to the response to test the anti-noise performance of the algorithm. The simulation results show that the proposed method is capable of accurately tracking the variation of the systems.
基金supported by the National Natural Science Foundation of China(Grant No.52072349,51672259 and 41807201)the Fundamental Research Funds for National Universities,China University of Geosciences(Wuhan)(No.1910491T02)the National College Students’Innovative Training Program(No.201910491003,201910491082,202010491002,202010491020 and 202010491053).
文摘Currently,the development of excellent red phosphor materials has attracted much attention in daily lighting,backlit displays,optical thermometry sensors and plant growthfields.However,spectral peak position modulation and bandwidth are still crucial challenges.Herein,we design Eu^(3+)→Mn^(4+)energy transfer in the Lu_(3)Al_(5)O_(12)(LuAG)garnet host.On the one hand,photoluminescence tuning from narrow orangish-red emission(593 nm)to narrow deep-red light(668 nm)is successfully obtained,and the energy transfer effciency reaches 47%.On the other hand,LuAG:Eu^(3+)exhibits anti-thermal-quenching properties;that is,the peak intensity reaches 166%at 200℃of the initial intensity at 25℃.By designing Eu^(3+)→Mn^(4+)energy transfer,Mn^(4+)thermal quenching performance is dramatically improved.The photo luminescence peak intensities at 668 nm for LuAG:0.01Mn^(4+)and LuAG:0.05Eu^(3+),0.01Mn^(4+)retain 3.26%and 26%at 200℃of the original intensity at 25℃.The corresponding energy transfer mechanism to improve thermal quenching is revealed.According to thefluorescence intensity ratio technique,the maximum values of Sa and Sr for LuAG:0.05Eu^(3+),0.01Mn^(4+)are 0.07 K−1 and 0.7%K^(−1)at 303 K.The temp erature sensitivity calculation indicates that LuAG:Eu^(3+),Mn^(4+)phosphors can act as promising candidates in optical thermometry sensors.This work provides an insight to achieve narrow red emission modulation and thermal quenching improvement.
文摘Plate-pin heat sinks are widely used for the electronic cooling system,internal combustion IC engine,cooling of gas turbine blades and other different applications to enhance the thermal performance of heat sinks due to simplicity,low cost,and a reliable manufacturing process.However,compact heat sinks give higher pressure drop compared with other types of heat sinks.The purpose of this article is to summarise the main advantages and disadvantages of the compact heat sink with some recommendation studies for future works heat sink thermal airflow experiment and simulations.Furthermore,the research attempts to highlight the importance of balance the relationship between the hydraulic performance and the thermal performance of compact heat sinks。
文摘his thesis mainly discusses Chinese negative transfer in English learning--Chinglish and does some error analysis about it. Furthermore, how we look at Chinglish? And some measureswe should take to correct Chinglish.
