We have successfully demonstrated a 1 Kb spin-orbit torque(SOT)magnetic random-access memory(MRAM)multiplexer(MUX)array with remarkable performance.The 1 Kb MUX array exhibits an in-die function yield of over 99.6%.Ad...We have successfully demonstrated a 1 Kb spin-orbit torque(SOT)magnetic random-access memory(MRAM)multiplexer(MUX)array with remarkable performance.The 1 Kb MUX array exhibits an in-die function yield of over 99.6%.Additionally,it provides a sufficient readout window,with a TMR/RP_sigma%value of 21.4.Moreover,the SOT magnetic tunnel junctions(MTJs)in the array show write error rates as low as 10^(-6)without any ballooning effects or back-hopping behaviors,ensuring the write stability and reliability.This array achieves write operations in 20 ns and 1.2 V for an industrial-level temperature range from-40 to 125℃.Overall,the demonstrated array shows competitive specifications compared to the state-of-the-art works.Our work paves the way for the industrial-scale production of SOT-MRAM,moving this technology beyond R&D and towards widespread adoption.展开更多
Introduction:This study assessed the impact of antiretroviral therapy(ART)on stillbirth and neonatal mortality and investigated associated risk factors among Human immunodeficiency virus-positive(HIV-positive)pregnant...Introduction:This study assessed the impact of antiretroviral therapy(ART)on stillbirth and neonatal mortality and investigated associated risk factors among Human immunodeficiency virus-positive(HIV-positive)pregnant women in Yunnan,China during 2013-2022.Methods:Data from the National Information System of Integrated Prevention of Mother-to-Child Transmission of HIV,Syphilis,and Hepatitis B Program(PMTCT)were analyzed to determine stillbirth and neonatal mortality rates.Multivariate Poisson regression was employed to identify risk factors associated with stillbirth and neonatal outcomes.Results:Among 9,563 HIV-positive women with singleton pregnancies in Yunnan Province during 2013-2022,9,404(98.34%)received ART during pregnancy,while 159(1.66%)did not.There were 9,421 live births,76 stillbirths,and 66 neonatal deaths,yielding a stillbirth rate(SBR)of 8.07‰and neonatal mortality rate(NMR)of 7.01‰.The SBR was significantly lower in pregnancies where ART was used(P=0.033).Univariate analysis revealed that ART(P=0.009),ethnicity(P=0.012),and antenatal care utilization(P<0.001)were associated with stillbirth and newborn survival.Multivariate Poisson regression identified that six or more antenatal care visits as an independent predictor of survival.Conclusions:Stillbirth and neonatal mortality rates were elevated among mothers who did not receive ART during pregnancy compared to those who did.These findings emphasize the importance of ART during pregnancy,particularly since several mortality risk factors are amenable to intervention.展开更多
基金supported by the National Key Research and Development Program of China (Nos.2021YFB3601303,2021YFB3601304,2021YFB3601300,2022YFB4400200,2022YFB4400201,2022YFB4400203)the National Natural Science Foundation of China (Grant No.62171013)。
文摘We have successfully demonstrated a 1 Kb spin-orbit torque(SOT)magnetic random-access memory(MRAM)multiplexer(MUX)array with remarkable performance.The 1 Kb MUX array exhibits an in-die function yield of over 99.6%.Additionally,it provides a sufficient readout window,with a TMR/RP_sigma%value of 21.4.Moreover,the SOT magnetic tunnel junctions(MTJs)in the array show write error rates as low as 10^(-6)without any ballooning effects or back-hopping behaviors,ensuring the write stability and reliability.This array achieves write operations in 20 ns and 1.2 V for an industrial-level temperature range from-40 to 125℃.Overall,the demonstrated array shows competitive specifications compared to the state-of-the-art works.Our work paves the way for the industrial-scale production of SOT-MRAM,moving this technology beyond R&D and towards widespread adoption.
文摘Introduction:This study assessed the impact of antiretroviral therapy(ART)on stillbirth and neonatal mortality and investigated associated risk factors among Human immunodeficiency virus-positive(HIV-positive)pregnant women in Yunnan,China during 2013-2022.Methods:Data from the National Information System of Integrated Prevention of Mother-to-Child Transmission of HIV,Syphilis,and Hepatitis B Program(PMTCT)were analyzed to determine stillbirth and neonatal mortality rates.Multivariate Poisson regression was employed to identify risk factors associated with stillbirth and neonatal outcomes.Results:Among 9,563 HIV-positive women with singleton pregnancies in Yunnan Province during 2013-2022,9,404(98.34%)received ART during pregnancy,while 159(1.66%)did not.There were 9,421 live births,76 stillbirths,and 66 neonatal deaths,yielding a stillbirth rate(SBR)of 8.07‰and neonatal mortality rate(NMR)of 7.01‰.The SBR was significantly lower in pregnancies where ART was used(P=0.033).Univariate analysis revealed that ART(P=0.009),ethnicity(P=0.012),and antenatal care utilization(P<0.001)were associated with stillbirth and newborn survival.Multivariate Poisson regression identified that six or more antenatal care visits as an independent predictor of survival.Conclusions:Stillbirth and neonatal mortality rates were elevated among mothers who did not receive ART during pregnancy compared to those who did.These findings emphasize the importance of ART during pregnancy,particularly since several mortality risk factors are amenable to intervention.
