Objectives:Benign prostatic hyperplasia(BPH)is a common benign tumor in men,with an age-related prevalence of multifactorial etiology.The present study aimed to accurately assess and predict the effect of co-existing ...Objectives:Benign prostatic hyperplasia(BPH)is a common benign tumor in men,with an age-related prevalence of multifactorial etiology.The present study aimed to accurately assess and predict the effect of co-existing metabolic syndrome(MtS)upon treatment outcomes of combination medical therapy in select patients of lower urinary tract symptoms(LUTS)due to BPH.Methods:After obtaining informed consent from the patients,70 eligible patients with LUTS due to BPH with and without MtS were enrolled in this study from September 2022 to January 2024 from the outpatient clinic at the University College of Medical Sciences and Guru Teg Bahadur Hospital,Delhi and were treated with a combination of Tamsulosin and Dutasteride,for two months,as per the protocol.The outcomes measured were a change in the International Prostate Symptom Score(IPSS),mean flow rate(MFR),and peak urine flow(Qmax)rates.Data was analysed using SPSS version 23.Results:The reduction in IPSS was higher in the control group than in the case group(p<0.001),and the difference in MFR between the groups was also statistically significant(p<0.001).Although there was a significant change in Qmax in both groups,the difference in the improvement in Qmax between the two groups was not significant(p<0.829).The control group appeared to have achieved better symptomatic relief after treatment than did the case group.Conclusion:Metabolic syndrome had a negative adverse impact on medical treatment outcomes in selected patients of LUTS due to BPH.The study suggests that urologists should actively consider and appropriately counsel patients with LUTS-BPH and co-existing metabolic syndrome before selecting such patients for combination medical therapy.展开更多
With the widespread use of polyethylene(PE)materials in gas pipelines,the problem related to the aging of these pipes has attracted increasing attention.Especially under complex environmental conditions involving temp...With the widespread use of polyethylene(PE)materials in gas pipelines,the problem related to the aging of these pipes has attracted increasing attention.Especially under complex environmental conditions involving temperature,humidity,and pressure changes,PE pipes are prone to oxidative degradation,which adversely affects their performance and service life.This study investigates the aging behavior of PE pipes used for gas transport under the combined effects of temperature(ranging from 80℃to 110℃)and pressure(0,0.1,0.2,and 0.3 MPa).By assessing the characteristics and thermal stability of the aged pipes,relevant efforts are provided to explore the performance variations during the aging process and develop methods for evaluating thermal stability.The results indicate that an increase in aging factors,specifically temperature and pressure,significantly reduces theMeltMass Flow Rate(MFR)of polyethylene pipes,suggesting a decline in the material’s flowability during the aging process.Oxidative Induction Time(OIT)tests show that with increasing temperature and pressure,the oxidative induction time of the aged polyethylene pipes progressively shortens,indicating a significant reduction in the material’s oxidative stability.The application of the Arrhenius equation further demonstrates that the aging reaction rate of polyethylene pipes in high-temperature environments is closely related to both temperature and activation energy,thereby laying the foundation of a new approach for the development of an initial model that can reflect the microscopic behavior of polyethylene pipes in aging environments.展开更多
In a previous paper[Phys.Rev.A95,060701(R)(2017)],we demonstrated that a new type of two-body interaction,which depends on the center of mass(CoM)momentum,can be realized for ultracold atoms via laser-modulated magnet...In a previous paper[Phys.Rev.A95,060701(R)(2017)],we demonstrated that a new type of two-body interaction,which depends on the center of mass(CoM)momentum,can be realized for ultracold atoms via laser-modulated magnetic Feshbach resonance(MFR).Further studies(e.g.L He et al,Phys.Rev.Lett.120,045302(2018))show that various interesting phenomena,such as Fulde–Ferrell superfluids,can be induced by scattering between ultracold atoms with this interaction.In this work we investigate the shallow bound states of two ultracold atoms with this type of interaction.We show that when the magnetic field B is below the MFR point B0,two shallow bound states can appear in this system.Namely,a'two-component dimer'or a dimer with pseudo-spin 1/2 can be formed by two atoms.Furthermore,the dispersion curve of the dimer may have either single or double minimums in the CoM momentum space.The latter case can be explained as a result from significant pseudo-spin-orbital coupling(SOC)effects.Our results show that the ultracold gases with CoM momentum dependent interaction may be a candidate for quantum simulations with ultracold two-component molecules,especially the molecule gases with SOC.展开更多
为了实现对某特定场所的远程监控和智能化管理,提出了一种基于RFID的门禁管理系统。介绍了系统的硬件和软件设计过程,系统以AT89S52单片机作为主控单元,采用MFRC500读写芯片实现近距离读取IC卡的序列号,通过串口通讯发送至服务器,基于SQ...为了实现对某特定场所的远程监控和智能化管理,提出了一种基于RFID的门禁管理系统。介绍了系统的硬件和软件设计过程,系统以AT89S52单片机作为主控单元,采用MFRC500读写芯片实现近距离读取IC卡的序列号,通过串口通讯发送至服务器,基于SQL Server 2000的信息管理子系统实现对IC卡的注册、验证、存储、查询等管理工作。实验表明系统稳定,可对出入人员进行智能化管理,提高了门禁的安全性和监控能力。展开更多
文摘Objectives:Benign prostatic hyperplasia(BPH)is a common benign tumor in men,with an age-related prevalence of multifactorial etiology.The present study aimed to accurately assess and predict the effect of co-existing metabolic syndrome(MtS)upon treatment outcomes of combination medical therapy in select patients of lower urinary tract symptoms(LUTS)due to BPH.Methods:After obtaining informed consent from the patients,70 eligible patients with LUTS due to BPH with and without MtS were enrolled in this study from September 2022 to January 2024 from the outpatient clinic at the University College of Medical Sciences and Guru Teg Bahadur Hospital,Delhi and were treated with a combination of Tamsulosin and Dutasteride,for two months,as per the protocol.The outcomes measured were a change in the International Prostate Symptom Score(IPSS),mean flow rate(MFR),and peak urine flow(Qmax)rates.Data was analysed using SPSS version 23.Results:The reduction in IPSS was higher in the control group than in the case group(p<0.001),and the difference in MFR between the groups was also statistically significant(p<0.001).Although there was a significant change in Qmax in both groups,the difference in the improvement in Qmax between the two groups was not significant(p<0.829).The control group appeared to have achieved better symptomatic relief after treatment than did the case group.Conclusion:Metabolic syndrome had a negative adverse impact on medical treatment outcomes in selected patients of LUTS due to BPH.The study suggests that urologists should actively consider and appropriately counsel patients with LUTS-BPH and co-existing metabolic syndrome before selecting such patients for combination medical therapy.
基金supported by the Sponsored by Natural Science Foundation of Xinjiang Uygur Autonomous Region(no.2022D01C389)the Xinjiang University Doctoral Start-up Foundation(no.620321029)the Science and Technology Planning Project of State Administration for Market Regulation(no.2022MK201).
文摘With the widespread use of polyethylene(PE)materials in gas pipelines,the problem related to the aging of these pipes has attracted increasing attention.Especially under complex environmental conditions involving temperature,humidity,and pressure changes,PE pipes are prone to oxidative degradation,which adversely affects their performance and service life.This study investigates the aging behavior of PE pipes used for gas transport under the combined effects of temperature(ranging from 80℃to 110℃)and pressure(0,0.1,0.2,and 0.3 MPa).By assessing the characteristics and thermal stability of the aged pipes,relevant efforts are provided to explore the performance variations during the aging process and develop methods for evaluating thermal stability.The results indicate that an increase in aging factors,specifically temperature and pressure,significantly reduces theMeltMass Flow Rate(MFR)of polyethylene pipes,suggesting a decline in the material’s flowability during the aging process.Oxidative Induction Time(OIT)tests show that with increasing temperature and pressure,the oxidative induction time of the aged polyethylene pipes progressively shortens,indicating a significant reduction in the material’s oxidative stability.The application of the Arrhenius equation further demonstrates that the aging reaction rate of polyethylene pipes in high-temperature environments is closely related to both temperature and activation energy,thereby laying the foundation of a new approach for the development of an initial model that can reflect the microscopic behavior of polyethylene pipes in aging environments.
基金supported by the National Key Research and Development Program of China (Grant No. 2022YFA1405300)the National Safety Academic Fund (Grant No. U1930201)+1 种基金the Fundamental Research Funds for the Central Universitiesthe Research Funds of Renmin University of China (22XNH100)
文摘In a previous paper[Phys.Rev.A95,060701(R)(2017)],we demonstrated that a new type of two-body interaction,which depends on the center of mass(CoM)momentum,can be realized for ultracold atoms via laser-modulated magnetic Feshbach resonance(MFR).Further studies(e.g.L He et al,Phys.Rev.Lett.120,045302(2018))show that various interesting phenomena,such as Fulde–Ferrell superfluids,can be induced by scattering between ultracold atoms with this interaction.In this work we investigate the shallow bound states of two ultracold atoms with this type of interaction.We show that when the magnetic field B is below the MFR point B0,two shallow bound states can appear in this system.Namely,a'two-component dimer'or a dimer with pseudo-spin 1/2 can be formed by two atoms.Furthermore,the dispersion curve of the dimer may have either single or double minimums in the CoM momentum space.The latter case can be explained as a result from significant pseudo-spin-orbital coupling(SOC)effects.Our results show that the ultracold gases with CoM momentum dependent interaction may be a candidate for quantum simulations with ultracold two-component molecules,especially the molecule gases with SOC.
文摘为了实现对某特定场所的远程监控和智能化管理,提出了一种基于RFID的门禁管理系统。介绍了系统的硬件和软件设计过程,系统以AT89S52单片机作为主控单元,采用MFRC500读写芯片实现近距离读取IC卡的序列号,通过串口通讯发送至服务器,基于SQL Server 2000的信息管理子系统实现对IC卡的注册、验证、存储、查询等管理工作。实验表明系统稳定,可对出入人员进行智能化管理,提高了门禁的安全性和监控能力。
