Relationships between the coercivity of hydrogenation disproportionation desorption recombination （HDDR） Nd12.5Fe81.5-xfo6Bx bonded magnets and boron content were investigated. Nd2Fe17 phase with planar magnetic ani...Relationships between the coercivity of hydrogenation disproportionation desorption recombination （HDDR） Nd12.5Fe81.5-xfo6Bx bonded magnets and boron content were investigated. Nd2Fe17 phase with planar magnetic anisotropy is present in the microstructure when x= 4at%-5.88at%, which does not reduce the coercivity of the bonded magnets. High-resolution transmission electron microscopy （TEM） images show that Nd2Fe17 phase exists in the form of nanocrystals in the Nd2Fe14B matrix. There is an exchange-coupling interaction between the two phases so that the coercivity of HDDR Nd12.5Fe81.5-xCo6Bx bonded magnets is hardly reduced with a decrease in boron content.展开更多
The progressive degradation in the trabecular meshwork(TM)is related to age-related ocular diseases like primary open-angle glaucoma.However,the molecular basis and biological significance of the aging process in TM h...The progressive degradation in the trabecular meshwork(TM)is related to age-related ocular diseases like primary open-angle glaucoma.However,the molecular basis and biological significance of the aging process in TM have not been fully elucidated.Here,we established a dynamic single-cell transcriptomic landscape of aged macaque TM,wherein we classified the outflow tissue into 12 cell subtypes and identified mitochondrial dysfunction as a prominent feature of TM aging.Furthermore,we divided TM cells into 13 clusters and performed an in-depth analysis on cluster O,which had the highest aging score and the most significant changes in cell proportions between the two groups.Ultimately,we found that the APOE gene was an important differentially expressed gene in cluster O during the aging process,highlighting the close relationship between cell migration and extracellular matrix regulation,and TM function.Our work further demonstrated that silencing the APOE gene could increase migration and reduce apoptosis by releasing the inhibition on the PI3K-AKT pathway and downregulating the expression of extracellular matrix components,thereby increasing the aqueous outflow rate and maintaining intraocular pressure within the normal range.Our work provides valuable insights for future clinical diagnosis and treatment of glaucoma.展开更多
Objective:To explore the potential of computed tomography(CT)-based delta-radiomics in predicting early shortterm responses to concurrent chemoradiotherapy for patients with non-small cell lung cancer(NSCLC),in order ...Objective:To explore the potential of computed tomography(CT)-based delta-radiomics in predicting early shortterm responses to concurrent chemoradiotherapy for patients with non-small cell lung cancer(NSCLC),in order to determine the optimal time point for the prediction.Methods:A total of 20 patients with pathologically confirmed NSCLC were prospectively enrolled in this study,who did not receive surgical treatment between February 2021 and February 2022.For each case,a total of 1,210 radiomic features(RFs)were extracted from both planning CT(pCT)images along with each of the subsequent three weeks of CT images.EffectiveΔRFs were selected using intra-class correlation coefficient(ICC)analysis,Pearson's correlation,ANOVA test(or Mann-Whitney U-test),and univariate logistic regression.The area under the curve(AUC)of the receiver operating characteristic(ROC)curve was used to evaluate the potential to predict short-term responses of different time points.Results:Among the 1,210ΔRFs for 1-3 weeks,121 common features were retained after processing using ICC analysis and Pearson's correlation.These retained features included 54 and 58 of all time points that differed significantly between the response and non-response groups for the first and third months,respectively(P<0.05).After univariate logistic regression,11 and 44 features remained for the first and third months,respectively.Finally,eightΔRFs(P<0.05,AUC=0.77-0.91)that can discriminate short-term responses in both at 1 and 3 months with statistical accuracy were identified.Conclusion:CT-based delta-radiomics has the potential to provide reasonable biomarkers of short-term responses to concurrent chemoradiotherapy for NSCLC patients,and it can help improve clinical decisions for early treatment adaptation.展开更多
The blood circulatory system is the largest system of fluid flow in the human body,and it has been widely studied and well understood.Pulsation characterizes the blood circulatory system and results in three essential...The blood circulatory system is the largest system of fluid flow in the human body,and it has been widely studied and well understood.Pulsation characterizes the blood circulatory system and results in three essentials,including(i)pressure fluctuations attributed to pumping of the heart,(ii)the self-regulatory,elastic cardiac muscle,which is sensitive to pressure variance and controls the output volume of the heart,and(iii)valves controlling the one-way flow.展开更多
基金financially supported by the National High-Tech Research and Development Program of China (No.2011AA03A403)
文摘Relationships between the coercivity of hydrogenation disproportionation desorption recombination （HDDR） Nd12.5Fe81.5-xfo6Bx bonded magnets and boron content were investigated. Nd2Fe17 phase with planar magnetic anisotropy is present in the microstructure when x= 4at%-5.88at%, which does not reduce the coercivity of the bonded magnets. High-resolution transmission electron microscopy （TEM） images show that Nd2Fe17 phase exists in the form of nanocrystals in the Nd2Fe14B matrix. There is an exchange-coupling interaction between the two phases so that the coercivity of HDDR Nd12.5Fe81.5-xCo6Bx bonded magnets is hardly reduced with a decrease in boron content.
基金supported by Beijing Traditional Chinese Medicine Technology Development Fund Project(J2018-50 to C.L.)the National Natural Science Foundation of China(81901202 to C.Y.)+2 种基金Beijing Natural Science Foundation(7222217 to C.Y.)the Capital Health Research and Development of Special(2022-4-40918 to C.Y.)Clinical Medicine Plus X-Young Scholars Project,Peking University,the Fundamental Research Funds for the Central Universities(PKU2021LCXQ007 to C.Y.).
文摘The progressive degradation in the trabecular meshwork(TM)is related to age-related ocular diseases like primary open-angle glaucoma.However,the molecular basis and biological significance of the aging process in TM have not been fully elucidated.Here,we established a dynamic single-cell transcriptomic landscape of aged macaque TM,wherein we classified the outflow tissue into 12 cell subtypes and identified mitochondrial dysfunction as a prominent feature of TM aging.Furthermore,we divided TM cells into 13 clusters and performed an in-depth analysis on cluster O,which had the highest aging score and the most significant changes in cell proportions between the two groups.Ultimately,we found that the APOE gene was an important differentially expressed gene in cluster O during the aging process,highlighting the close relationship between cell migration and extracellular matrix regulation,and TM function.Our work further demonstrated that silencing the APOE gene could increase migration and reduce apoptosis by releasing the inhibition on the PI3K-AKT pathway and downregulating the expression of extracellular matrix components,thereby increasing the aqueous outflow rate and maintaining intraocular pressure within the normal range.Our work provides valuable insights for future clinical diagnosis and treatment of glaucoma.
基金supported by the Climbing Program from the National Cancer Center(NCC201917B03)Bethune Research Foundation of China(flzh202121)the key project of the Health Commission of Hubei Province,China(No:WJ2019Z015).
文摘Objective:To explore the potential of computed tomography(CT)-based delta-radiomics in predicting early shortterm responses to concurrent chemoradiotherapy for patients with non-small cell lung cancer(NSCLC),in order to determine the optimal time point for the prediction.Methods:A total of 20 patients with pathologically confirmed NSCLC were prospectively enrolled in this study,who did not receive surgical treatment between February 2021 and February 2022.For each case,a total of 1,210 radiomic features(RFs)were extracted from both planning CT(pCT)images along with each of the subsequent three weeks of CT images.EffectiveΔRFs were selected using intra-class correlation coefficient(ICC)analysis,Pearson's correlation,ANOVA test(or Mann-Whitney U-test),and univariate logistic regression.The area under the curve(AUC)of the receiver operating characteristic(ROC)curve was used to evaluate the potential to predict short-term responses of different time points.Results:Among the 1,210ΔRFs for 1-3 weeks,121 common features were retained after processing using ICC analysis and Pearson's correlation.These retained features included 54 and 58 of all time points that differed significantly between the response and non-response groups for the first and third months,respectively(P<0.05).After univariate logistic regression,11 and 44 features remained for the first and third months,respectively.Finally,eightΔRFs(P<0.05,AUC=0.77-0.91)that can discriminate short-term responses in both at 1 and 3 months with statistical accuracy were identified.Conclusion:CT-based delta-radiomics has the potential to provide reasonable biomarkers of short-term responses to concurrent chemoradiotherapy for NSCLC patients,and it can help improve clinical decisions for early treatment adaptation.
基金supported by the National Natural Science Foundation of China(82130029)the National Key Research and Development Program of China(2022YEF0132500)Qingdao Key Technology and Industrialization Project(23-1-4-xxgg-16-nsh)。
文摘The blood circulatory system is the largest system of fluid flow in the human body,and it has been widely studied and well understood.Pulsation characterizes the blood circulatory system and results in three essentials,including(i)pressure fluctuations attributed to pumping of the heart,(ii)the self-regulatory,elastic cardiac muscle,which is sensitive to pressure variance and controls the output volume of the heart,and(iii)valves controlling the one-way flow.
