Bismuth-based catalysts are highly promising for the electrochemical carbon dioxide reduction reaction(eCO_(2)RR)to formate product.However,achieving high activity and selectivity towards formate and ensuring long-ter...Bismuth-based catalysts are highly promising for the electrochemical carbon dioxide reduction reaction(eCO_(2)RR)to formate product.However,achieving high activity and selectivity towards formate and ensuring long-term stability remains challenging.This work reports the oxygen plasma inducing strategy to construct the abundant grain boundaries of Bi/BiO_x on ultrathin two-dimensional Bi nanosheets.The oxygen plasma-treated Bi nanosheet(OP-Bi)exhibits over 90%Faradaic efficiency(FE)for formate at a wide potential range from-0.5 to-1.1 V,and maintains a great stability catalytic performance without significant decay over 30 h in flow cell.Moreover,membrane electrode assembly(MEA)device with OPBi as catalyst sustains the robust current density of 100 mA cm^(-2)over 50 h,maintaining a formate FE above 90%.In addition,rechargeable Zn-CO_(2)battery presents the peak power density of1.22 mW cm^(-2)with OP-Bi as bifunctional catalyst.The mechanism experiments demonstrate that the high-density grain boundaries of OP-Bi provide more exposed active sites,faster electron transfer capacity,and the stronger intrinsic activity of Bi atoms.In situ spectroscopy and theo retical calculations further elucidate that the unsaturated Bi coordination atoms between the grain boundaries can effectively activate CO_(2)molecules through elongating the C-O bond,and reducing the formation energy barrier of the key intermediate(^(*)OCOH),thereby enhancing the catalytic performance of eCO_(2)RR to formate product.展开更多
Epidemiology of Amyloid Light-Chain Cardiac Amyloidosis(AL-CA)The annual incidence of amyloid light-chain(AL)amyloidosis is 3-5/million,and the incidence in men is slightly higher than that in women.Approximately,70%o...Epidemiology of Amyloid Light-Chain Cardiac Amyloidosis(AL-CA)The annual incidence of amyloid light-chain(AL)amyloidosis is 3-5/million,and the incidence in men is slightly higher than that in women.Approximately,70%of patients with newly diagnosed AL amyloidosis have cardiac involvement.展开更多
背景股骨头坏死患者常处于青壮年,如果不及时治疗,会快速进展,发生股骨头的塌陷,严重影响工作生活,最终需要接受全髋关节置换。目的观察早期股骨头坏死标本不同区域微观结构,研究其内部结构变化规律,为早期股骨头坏死的治疗提供指导。...背景股骨头坏死患者常处于青壮年,如果不及时治疗,会快速进展,发生股骨头的塌陷,严重影响工作生活,最终需要接受全髋关节置换。目的观察早期股骨头坏死标本不同区域微观结构,研究其内部结构变化规律,为早期股骨头坏死的治疗提供指导。方法收集2019年3月-2020年1月因股骨头坏死于解放军总医院第一医学中心行全髋关节置换术患者的10个股骨头标本,其中女性5例,男性5例,年龄41~66岁,平均52岁。术前起病时间3~24个月,平均9.5个月。根据改良的国际骨循环研究学会(ARCO)分期标准,放射学分期均为Ⅱ期。将骨坏死标本沿冠状位切成厚约2 mm切片,采用micro-CT、高精度X线检查、病理学等方法研究股骨头坏死不同区域内部结构变化规律。结果通过micro-CT及病理切片染色发现早中期股骨头坏死标本软骨下骨正常的屏障作用减退或消失,部分区域有新生血管侵入,坏死区骨小梁结构完整性消失,骨小梁表面新生骨较少,且存在大量空骨陷窝。硬化区骨小梁数量和厚度均明显增加,新生类骨质较多,硬化区成骨相对于坏死区和正常区更为活跃。骨计量参数统计分析显示硬化区骨矿密度(bone mineral density,BMD)(mg/cc)(202.83±38.95 vs 79.00±24.50和102.12±17.44)、骨体积分数(bone volume fraction,BV/TV)(50.35%±7.40%vs 29.14%±8.80%和33.68%±5.70%)相对于坏死区和正常区明显增加(P均<0.05)。同时坏死修复反应区血管面积也较坏死区和正常区明显增加(P<0.05)。结论早中期股骨头坏死已发生软骨下骨屏障作用减退。坏死区保留死骨,改变成骨方式,对于早中期骨坏死的治疗及塌陷的预防具有积极意义。展开更多
Amyloidosis is a multisystem disease that is characterized by deposition of fibrils in extracellular tissue,which mainly involves the kidney,heart,and autonomic nervous system.Two types of amyloidosis typically infilt...Amyloidosis is a multisystem disease that is characterized by deposition of fibrils in extracellular tissue,which mainly involves the kidney,heart,and autonomic nervous system.Two types of amyloidosis typically infiltrate the heart,including immunoglobulin light-chain(AL)and amyloid transthyretin(ATTR).ATTR is further subdivided into wild-type ATTR and variant ATTR caused by point mutations in the TTR gene.[1]Wild-type ATTR is considered as not uncommon in older patients with heart failure.Recently,a comprehensive set of consensus recommendations for the suspicion and diagnosis of ATTR was published,with particular focus on the combined application of noninvasive methods.[2]We present here a case of wild-type TTR cardiac amyloidosis(ATTRwt-CA),which was diagnosed by noninvasive modalities,and provide an overview of the recommended diagnostic approach of CA.Furthermore,to the best of our knowledge,this is the first Chinese case of ATTRwt-CA reported to date.展开更多
A novel strategy to synthesize copper-based nanoparticles supported on carbon nitride(C3 N4) was developed by popping of mixture containing C3 N4 and cupric nitrate. Characterizations such as X-ray photoelectron spect...A novel strategy to synthesize copper-based nanoparticles supported on carbon nitride(C3 N4) was developed by popping of mixture containing C3 N4 and cupric nitrate. Characterizations such as X-ray photoelectron spectroscopy(XPS) and X-ray diffraction(XRD) indicate that the structure of g-C3 N4 maintained although a popping process occurred. High resolution transmission electronic microscopy(HRTEM) characterization illustrated that copper-based nanoparticles with diameter of < 1 nm were well distributed on g-C3 N4. This kind of copper catalyst exhibits high catalytic activity and selectivity in arylation of pyrazole, a simple and effect strategy to construct C-N bond in organic chemistry.According to the results of control experiments and characterizations, cuprous oxide should be the catalytic active phase in the supported coperbased catalyst.展开更多
Many management strategies are available for pancreatic neuroendocrine neoplasms with liver metastases.However,a lack of biological,molecular,and genomic information and an absence of data from rigorous trials limit t...Many management strategies are available for pancreatic neuroendocrine neoplasms with liver metastases.However,a lack of biological,molecular,and genomic information and an absence of data from rigorous trials limit the validity of these strategies.This review presents the viewpoints from an international conference consisting of several expert working groups.The working groups reviewed a series of questions of particular interest to clinicians taking care of patients with pancreatic neuroendocrine neoplasms with liver metastases by reviewing the existing management strategies and literature,evaluating the evidence on which management decisions were based,developing internationally acceptable recommendations for clinical practice,and making recommendations for clinical and research endeavors.The review for each question will be followed by recommendations from the panel.展开更多
基金supported by the Hainan Province Science and Technology Special Fund(ZDYF2024SHFZ074,ZDYF2024SHFZ072,ZDYF2022SHFZ299)the National Natural Science Foundation of China(22109035,22202053,52164028,52274297,22309037)+4 种基金the Start-up Research Foundation of Hainan University(KYQD(ZR)-20008,20083,20084,21125,23035)the collaborative Innovation Center of Marine Science and Technology,Hainan University(XTCX2022HYC04,XTCX2022HYC05)the Innovative Research Projects for Graduate Students of Hainan Province(Qhyb2022-89,Qhyb2022-87,Qhys2022-174)the Scientific Research Program Funded by Shaanxi Provincial Education Department(Program No.23JK0439)the specific research fund of The Innovation Platform for Academicians of Hainan Province(YSPTZX202315)。
文摘Bismuth-based catalysts are highly promising for the electrochemical carbon dioxide reduction reaction(eCO_(2)RR)to formate product.However,achieving high activity and selectivity towards formate and ensuring long-term stability remains challenging.This work reports the oxygen plasma inducing strategy to construct the abundant grain boundaries of Bi/BiO_x on ultrathin two-dimensional Bi nanosheets.The oxygen plasma-treated Bi nanosheet(OP-Bi)exhibits over 90%Faradaic efficiency(FE)for formate at a wide potential range from-0.5 to-1.1 V,and maintains a great stability catalytic performance without significant decay over 30 h in flow cell.Moreover,membrane electrode assembly(MEA)device with OPBi as catalyst sustains the robust current density of 100 mA cm^(-2)over 50 h,maintaining a formate FE above 90%.In addition,rechargeable Zn-CO_(2)battery presents the peak power density of1.22 mW cm^(-2)with OP-Bi as bifunctional catalyst.The mechanism experiments demonstrate that the high-density grain boundaries of OP-Bi provide more exposed active sites,faster electron transfer capacity,and the stronger intrinsic activity of Bi atoms.In situ spectroscopy and theo retical calculations further elucidate that the unsaturated Bi coordination atoms between the grain boundaries can effectively activate CO_(2)molecules through elongating the C-O bond,and reducing the formation energy barrier of the key intermediate(^(*)OCOH),thereby enhancing the catalytic performance of eCO_(2)RR to formate product.
基金supported by grants from the CAMS Innovation Fund for Medical Sciences(No.CIFMS 2021-I2M-1-003)National High Level Hospital Clinical Research Funding(No.2022-PUMCH-B-098)the National Key Research and Development Program of China(No.2022YFC2703100)
文摘Epidemiology of Amyloid Light-Chain Cardiac Amyloidosis(AL-CA)The annual incidence of amyloid light-chain(AL)amyloidosis is 3-5/million,and the incidence in men is slightly higher than that in women.Approximately,70%of patients with newly diagnosed AL amyloidosis have cardiac involvement.
文摘背景股骨头坏死患者常处于青壮年,如果不及时治疗,会快速进展,发生股骨头的塌陷,严重影响工作生活,最终需要接受全髋关节置换。目的观察早期股骨头坏死标本不同区域微观结构,研究其内部结构变化规律,为早期股骨头坏死的治疗提供指导。方法收集2019年3月-2020年1月因股骨头坏死于解放军总医院第一医学中心行全髋关节置换术患者的10个股骨头标本,其中女性5例,男性5例,年龄41~66岁,平均52岁。术前起病时间3~24个月,平均9.5个月。根据改良的国际骨循环研究学会(ARCO)分期标准,放射学分期均为Ⅱ期。将骨坏死标本沿冠状位切成厚约2 mm切片,采用micro-CT、高精度X线检查、病理学等方法研究股骨头坏死不同区域内部结构变化规律。结果通过micro-CT及病理切片染色发现早中期股骨头坏死标本软骨下骨正常的屏障作用减退或消失,部分区域有新生血管侵入,坏死区骨小梁结构完整性消失,骨小梁表面新生骨较少,且存在大量空骨陷窝。硬化区骨小梁数量和厚度均明显增加,新生类骨质较多,硬化区成骨相对于坏死区和正常区更为活跃。骨计量参数统计分析显示硬化区骨矿密度(bone mineral density,BMD)(mg/cc)(202.83±38.95 vs 79.00±24.50和102.12±17.44)、骨体积分数(bone volume fraction,BV/TV)(50.35%±7.40%vs 29.14%±8.80%和33.68%±5.70%)相对于坏死区和正常区明显增加(P均<0.05)。同时坏死修复反应区血管面积也较坏死区和正常区明显增加(P<0.05)。结论早中期股骨头坏死已发生软骨下骨屏障作用减退。坏死区保留死骨,改变成骨方式,对于早中期骨坏死的治疗及塌陷的预防具有积极意义。
基金the National Key Research and Development Program of China(2016YFC0901500).
文摘Amyloidosis is a multisystem disease that is characterized by deposition of fibrils in extracellular tissue,which mainly involves the kidney,heart,and autonomic nervous system.Two types of amyloidosis typically infiltrate the heart,including immunoglobulin light-chain(AL)and amyloid transthyretin(ATTR).ATTR is further subdivided into wild-type ATTR and variant ATTR caused by point mutations in the TTR gene.[1]Wild-type ATTR is considered as not uncommon in older patients with heart failure.Recently,a comprehensive set of consensus recommendations for the suspicion and diagnosis of ATTR was published,with particular focus on the combined application of noninvasive methods.[2]We present here a case of wild-type TTR cardiac amyloidosis(ATTRwt-CA),which was diagnosed by noninvasive modalities,and provide an overview of the recommended diagnostic approach of CA.Furthermore,to the best of our knowledge,this is the first Chinese case of ATTRwt-CA reported to date.
基金supported the following funders: One Hundred Talent Project of Hebei Province (Grant No. E2016100015)National Natural Science Foundation of China (No. 21773053)+2 种基金Hebei provincial Natural Science Foundation (No. B2017201084)Hebei Provincial Technology Foundation for High-level talents (No. CL201601)the science technology research and development guidance program project of Baoding City (No. 16ZF027)
文摘A novel strategy to synthesize copper-based nanoparticles supported on carbon nitride(C3 N4) was developed by popping of mixture containing C3 N4 and cupric nitrate. Characterizations such as X-ray photoelectron spectroscopy(XPS) and X-ray diffraction(XRD) indicate that the structure of g-C3 N4 maintained although a popping process occurred. High resolution transmission electronic microscopy(HRTEM) characterization illustrated that copper-based nanoparticles with diameter of < 1 nm were well distributed on g-C3 N4. This kind of copper catalyst exhibits high catalytic activity and selectivity in arylation of pyrazole, a simple and effect strategy to construct C-N bond in organic chemistry.According to the results of control experiments and characterizations, cuprous oxide should be the catalytic active phase in the supported coperbased catalyst.
基金supported by the National Natural Science Foundation of China(Grant number,82141127).
文摘Many management strategies are available for pancreatic neuroendocrine neoplasms with liver metastases.However,a lack of biological,molecular,and genomic information and an absence of data from rigorous trials limit the validity of these strategies.This review presents the viewpoints from an international conference consisting of several expert working groups.The working groups reviewed a series of questions of particular interest to clinicians taking care of patients with pancreatic neuroendocrine neoplasms with liver metastases by reviewing the existing management strategies and literature,evaluating the evidence on which management decisions were based,developing internationally acceptable recommendations for clinical practice,and making recommendations for clinical and research endeavors.The review for each question will be followed by recommendations from the panel.
