Magnetic skyrmions in multilayer structures are considered as a new direction for the next generation of storage due to their small size,strong anti-interference ability,high current-driven mobility,and compatibility ...Magnetic skyrmions in multilayer structures are considered as a new direction for the next generation of storage due to their small size,strong anti-interference ability,high current-driven mobility,and compatibility with existing spintronic technology.In this work,we present a tunable room temperature skyrmion platform based on multilayer stacks of MgO/FeNiB/Mo.We systematically studied the creation of magnetic skyrmions in MgO/FeNiB/Mo multilayer structures with perpendicular magnetic anisotropy(PMA).In these structures,the magnetic anisotropy changes from PMA to in-plane magnetic anisotropy(IMA)as the thickness of FeNiB layer increases.By adjusting the applied magnetic field and electric current,stable and high-density skyrmions can be obtained in the material system.The discovery of this material broadens the exploration of new materials for skyrmion and promotes the development of spintronic devices based on skyrmions.展开更多
Studies have investigated the effects of androgen deprivation therapy(ADT)use on the incidence and clinical outcomes of coronavirus disease 2019(COVID-19);however,the results have been inconsistent.We searched the Pub...Studies have investigated the effects of androgen deprivation therapy(ADT)use on the incidence and clinical outcomes of coronavirus disease 2019(COVID-19);however,the results have been inconsistent.We searched the PubMed,Medline,Cochrane,Scopus,and Web of Science databases from inception to March 2022;13 studies covering 84003 prostate cancer(PCa)patients with or without ADT met the eligibility criteria and were included in the meta-analysis.We calculated the pooled risk ratios(RRs)with 95%confidence intervals(CIs)to explore the association between ADT use and the infection risk of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)and severity of COVID-19.After synthesizing the evidence,the pooled RR in the SARS-CoV-2 positive group was equal to 1.17,and the SARS-CoV-2 positive risk in PCa patients using ADT was not significantly different from that in those not using ADT(P=0.544).Moreover,no significant results concerning the beneficial effect of ADT on the rate of intensive care unit admission(RR=1.04,P=0.872)or death risk(RR=1.23,P=0.53)were found.However,PCa patients with a history of ADT use had a markedly higher COVID-19 hospitalization rate(RR=1.31,P=0.015)than those with no history of ADT use.These findings indicate that ADT use by PCa patients is associated with a high risk of hospitalization during infection with SARS-CoV-2.A large number of high quality studies are needed to confirm these results.展开更多
In this paper, we use the Green's function method to get the pointwise convergence rate of the semilinear pseudo-parabolic equations. By using this precise pointwise structure and introducing negative index Sobole...In this paper, we use the Green's function method to get the pointwise convergence rate of the semilinear pseudo-parabolic equations. By using this precise pointwise structure and introducing negative index Sobolev space condition on the initial data, we release the critical index of the nonlinearity for blowing up. Our result shows that the global existence does not only depend on the nonlinearity but also the initial condition.展开更多
Objective:To observe the effect of Danhong injection(DHI)on perioperative metabolomics of unstable angina pectoris(UA)with blood stasis syndrome.Materials and Methods:A prospective,randomized,controlled,and single-bli...Objective:To observe the effect of Danhong injection(DHI)on perioperative metabolomics of unstable angina pectoris(UA)with blood stasis syndrome.Materials and Methods:A prospective,randomized,controlled,and single-blind clinical trial was conducted.Sixty-one UA patients with traditional Chinese medicine blood stasis syndrome undergoing elective percutaneous coronary intervention(PCI)were randomly divided into the Danhong and control groups,and 10 healthy volunteers were included as baseline.The Danhong group received western medicine+DHI treatment,while the control group received western medicine+saline.Nontargeted metabolomics was used to analyze the serum metabolites of healthy volunteers in the Danhong and control groups before and 5 days after PCI.Results:Before treatment,there was no significant difference in serum metabolites between the Danhong and control groups,but there was a significant difference between the two groups and the healthy group.Differential metabolites were clustered mainly in glycerophospholipid,sphingolipid,purine,and amino acid groups,which were generated in their metabolic pathways.After 5 days of PCI,the profiles of serum metabolites were significantly closer between the Danhong-or control-treated groups and that of the healthy group.Furthermore,DHI treatment converted the serum metabolite profile more to that of the healthy group than the control treatment.Conclusion:The beneficial effect of DHI on patients with unstable angina is reflected at the level of serum metabolic biomarkers.展开更多
基金Project supported by the National Basic Research Program of China (Grant No.2015CB921403)the National Key Research and Development Program of China (Grant No.2016YFA0300804)+2 种基金the National Natural Science Foundation of China (Grant Nos.51871236,11874408,51431009,92263202,and 51971240)the Science Center of the National Science Foundation of China (Grant No.52088101)the Strategic Priority Research Program (B,Grant No.XDB33030200)of the Chinese Academy of Sciences (CAS)。
文摘Magnetic skyrmions in multilayer structures are considered as a new direction for the next generation of storage due to their small size,strong anti-interference ability,high current-driven mobility,and compatibility with existing spintronic technology.In this work,we present a tunable room temperature skyrmion platform based on multilayer stacks of MgO/FeNiB/Mo.We systematically studied the creation of magnetic skyrmions in MgO/FeNiB/Mo multilayer structures with perpendicular magnetic anisotropy(PMA).In these structures,the magnetic anisotropy changes from PMA to in-plane magnetic anisotropy(IMA)as the thickness of FeNiB layer increases.By adjusting the applied magnetic field and electric current,stable and high-density skyrmions can be obtained in the material system.The discovery of this material broadens the exploration of new materials for skyrmion and promotes the development of spintronic devices based on skyrmions.
基金This study was supported by the National Natural Science Foundation of China(81972831 and 31800787)the Natural Science Foundation of Liaoning Province(502722)+4 种基金the“Seedling”Project of Young Scientific and Technological Talents of Liaoning Education Department(LR2019008)the United Fund of the Second Hospital of Dalian Medical University and Dalian Institute of Chemical Physics,Chinese Academy of Sciences(UF-QN-202004)the Dalian High-level Talents Innovation Support Program(2019RQ014)the Doctoral Research Startup Foundation of the Second Hospital of Dalian Medical University(DY2Y201704)the Young Reserve Talent Project of the Second Hospital of Dalian Medical University(dy2yhbrc202010).
文摘Studies have investigated the effects of androgen deprivation therapy(ADT)use on the incidence and clinical outcomes of coronavirus disease 2019(COVID-19);however,the results have been inconsistent.We searched the PubMed,Medline,Cochrane,Scopus,and Web of Science databases from inception to March 2022;13 studies covering 84003 prostate cancer(PCa)patients with or without ADT met the eligibility criteria and were included in the meta-analysis.We calculated the pooled risk ratios(RRs)with 95%confidence intervals(CIs)to explore the association between ADT use and the infection risk of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)and severity of COVID-19.After synthesizing the evidence,the pooled RR in the SARS-CoV-2 positive group was equal to 1.17,and the SARS-CoV-2 positive risk in PCa patients using ADT was not significantly different from that in those not using ADT(P=0.544).Moreover,no significant results concerning the beneficial effect of ADT on the rate of intensive care unit admission(RR=1.04,P=0.872)or death risk(RR=1.23,P=0.53)were found.However,PCa patients with a history of ADT use had a markedly higher COVID-19 hospitalization rate(RR=1.31,P=0.015)than those with no history of ADT use.These findings indicate that ADT use by PCa patients is associated with a high risk of hospitalization during infection with SARS-CoV-2.A large number of high quality studies are needed to confirm these results.
基金supported in part by the National Natural Science Foundation of China 11771284
文摘In this paper, we use the Green's function method to get the pointwise convergence rate of the semilinear pseudo-parabolic equations. By using this precise pointwise structure and introducing negative index Sobolev space condition on the initial data, we release the critical index of the nonlinearity for blowing up. Our result shows that the global existence does not only depend on the nonlinearity but also the initial condition.
文摘Objective:To observe the effect of Danhong injection(DHI)on perioperative metabolomics of unstable angina pectoris(UA)with blood stasis syndrome.Materials and Methods:A prospective,randomized,controlled,and single-blind clinical trial was conducted.Sixty-one UA patients with traditional Chinese medicine blood stasis syndrome undergoing elective percutaneous coronary intervention(PCI)were randomly divided into the Danhong and control groups,and 10 healthy volunteers were included as baseline.The Danhong group received western medicine+DHI treatment,while the control group received western medicine+saline.Nontargeted metabolomics was used to analyze the serum metabolites of healthy volunteers in the Danhong and control groups before and 5 days after PCI.Results:Before treatment,there was no significant difference in serum metabolites between the Danhong and control groups,but there was a significant difference between the two groups and the healthy group.Differential metabolites were clustered mainly in glycerophospholipid,sphingolipid,purine,and amino acid groups,which were generated in their metabolic pathways.After 5 days of PCI,the profiles of serum metabolites were significantly closer between the Danhong-or control-treated groups and that of the healthy group.Furthermore,DHI treatment converted the serum metabolite profile more to that of the healthy group than the control treatment.Conclusion:The beneficial effect of DHI on patients with unstable angina is reflected at the level of serum metabolic biomarkers.
