The application of low-condensation diesel in cold regions with extremely low ambient temperatures(−14 to−29°C)has enabled the operation of diesel vehicles.Still,it may contribute to heavy haze pollution in cold ...The application of low-condensation diesel in cold regions with extremely low ambient temperatures(−14 to−29°C)has enabled the operation of diesel vehicles.Still,it may contribute to heavy haze pollution in cold regions during winter.Here we examine pollutant emissions from low-condensation diesel in China.We measure the emissions of elemental carbon(EC),organic carbon(OC),and elements,including heavy metals such as arsenic(As).Our results show that low-condensation diesel increased EC and OC emissions by 2.5 and 2.6 times compared to normal diesel fuel,respectively.Indicators of vehicular sources,including EC,As,lead(Pb),cadmium(Cd),chromium(Cr),nickel(Ni),and manganese(Mn),increased by approximately 20.2-162.5%when using low-condensation diesel.Seasonal variation of vehicular source indicators,observed at road site ambient environments revealed the enhancement of PM2.5 pollution by the application of low-condensation diesel in winter.These findings suggest that−35#diesel,a low-cetane index diesel,may enhance air pollution in winter,according to a dynamometer test conducted in laboratory.It raises questions about whether higher emissions are released if−35#diesel is applied to running vehicles in real-world cold ambient environments.展开更多
A 63-year-old male presented with lower abdominal pain and oliguria due to a large mass in the seminal vesicles. Positron emission tomography/CT (PET/CT) examination showed multiple lesions in the seminal Vesicles, pa...A 63-year-old male presented with lower abdominal pain and oliguria due to a large mass in the seminal vesicles. Positron emission tomography/CT (PET/CT) examination showed multiple lesions in the seminal Vesicles, parapharyngeal space, mediastinum and spermatic cord. The result of transrectal ultrasound (TRUS)-guided biopsy indicated a diffuse, large, B-cell lymphoma of the seminal vesicles. PET-CT and TRUS guided biopsy were very helpful to make the correct diagnosis of this unique case.展开更多
Liver transplantation(LT)is the final treatment option for patients with end-stage liver disease.The increasing donor shortage results in the wide usage of grafts from extended criteria donors across the world.Using s...Liver transplantation(LT)is the final treatment option for patients with end-stage liver disease.The increasing donor shortage results in the wide usage of grafts from extended criteria donors across the world.Using such grafts is associated with the elevated incidences of post-transplant complications including initial nonfunction and ischemic biliary tract diseases,which significantly reduce recipient survival.Although several clinical factors have been demonstrated to impact donor liver quality,accurate,comprehensive,and effective assessment systems to guide decision-making for organ usage,restoration or discard are lacking.In addition,the development of biochemical technologies and bioinformatic analysis in recent years helps us better understand graft injury during the perioperative period and find potential ways to restore graft function.Moreover,such advances reveal the molecular profiles of grafts or perfusate that are susceptible to poor graft function and provide insight into finding novel biomarkers for graft quality assessment.Focusing on donors and grafts,we updated potential biomarkers in donor blood,liver tissue,or perfusates that predict graft quality following LT,and summarized strategies for restoring graft function in the era of extended criteria donors.In this review,we also discuss the advantages and drawbacks of these potential biomarkers and offer suggestions for future research.展开更多
基金National Natural Science Foundation of China(51778181)Open Project of the State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology(No.ES201908).
文摘The application of low-condensation diesel in cold regions with extremely low ambient temperatures(−14 to−29°C)has enabled the operation of diesel vehicles.Still,it may contribute to heavy haze pollution in cold regions during winter.Here we examine pollutant emissions from low-condensation diesel in China.We measure the emissions of elemental carbon(EC),organic carbon(OC),and elements,including heavy metals such as arsenic(As).Our results show that low-condensation diesel increased EC and OC emissions by 2.5 and 2.6 times compared to normal diesel fuel,respectively.Indicators of vehicular sources,including EC,As,lead(Pb),cadmium(Cd),chromium(Cr),nickel(Ni),and manganese(Mn),increased by approximately 20.2-162.5%when using low-condensation diesel.Seasonal variation of vehicular source indicators,observed at road site ambient environments revealed the enhancement of PM2.5 pollution by the application of low-condensation diesel in winter.These findings suggest that−35#diesel,a low-cetane index diesel,may enhance air pollution in winter,according to a dynamometer test conducted in laboratory.It raises questions about whether higher emissions are released if−35#diesel is applied to running vehicles in real-world cold ambient environments.
文摘A 63-year-old male presented with lower abdominal pain and oliguria due to a large mass in the seminal vesicles. Positron emission tomography/CT (PET/CT) examination showed multiple lesions in the seminal Vesicles, parapharyngeal space, mediastinum and spermatic cord. The result of transrectal ultrasound (TRUS)-guided biopsy indicated a diffuse, large, B-cell lymphoma of the seminal vesicles. PET-CT and TRUS guided biopsy were very helpful to make the correct diagnosis of this unique case.
基金funded by the National Natural Science Foundation of China (No.82171757)the Zhejiang Province Natural Science Foundation of China (No.LZ22H030004).
文摘Liver transplantation(LT)is the final treatment option for patients with end-stage liver disease.The increasing donor shortage results in the wide usage of grafts from extended criteria donors across the world.Using such grafts is associated with the elevated incidences of post-transplant complications including initial nonfunction and ischemic biliary tract diseases,which significantly reduce recipient survival.Although several clinical factors have been demonstrated to impact donor liver quality,accurate,comprehensive,and effective assessment systems to guide decision-making for organ usage,restoration or discard are lacking.In addition,the development of biochemical technologies and bioinformatic analysis in recent years helps us better understand graft injury during the perioperative period and find potential ways to restore graft function.Moreover,such advances reveal the molecular profiles of grafts or perfusate that are susceptible to poor graft function and provide insight into finding novel biomarkers for graft quality assessment.Focusing on donors and grafts,we updated potential biomarkers in donor blood,liver tissue,or perfusates that predict graft quality following LT,and summarized strategies for restoring graft function in the era of extended criteria donors.In this review,we also discuss the advantages and drawbacks of these potential biomarkers and offer suggestions for future research.
