While the Ordos Basin is recognized for its substantial hydrocarbon exploration prospects,its rugged loess tableland terrain has rendered seismic exploration exceptionally challenging[1-3].Persistent obstacles such as...While the Ordos Basin is recognized for its substantial hydrocarbon exploration prospects,its rugged loess tableland terrain has rendered seismic exploration exceptionally challenging[1-3].Persistent obstacles such as complex 3D survey planning,low signal-tonoise ratio raw data,inadequate near-surface velocity modeling,and imaging inaccuracy have long hindered the advancement of seismic exploration across this region.Through a problem-solving approach rooted in geological target analysis,this research systematically investigates the behavioral patterns of nodal seismometer-based high-density seismic acquisition in loess plateau.Tailored advancements in waveform enhancement and depth velocity modelling methodologies have been engineered.Field validations confirm that the optimized workflow demonstrates marked improvements in amplitude preservation and imaging resolution,offering novel insights for future reservoir characterization endeavors.展开更多
Aqueous zinc-ion batteries(AZIBs) have advantages including low economic cost and high safety.Nevertheless,the serious hydrogen evolution reactions(HER) and rampant growth of Zn dendrite hinder their further developme...Aqueous zinc-ion batteries(AZIBs) have advantages including low economic cost and high safety.Nevertheless,the serious hydrogen evolution reactions(HER) and rampant growth of Zn dendrite hinder their further development.Herein,potassium acetate(KAc) additive with cation/anion synergy effect is added into the ZnSO_(4) electrolyte to effectively promote the oriented uniform Zn deposition and suppress side reactions.According to density functional theory calculation and experimental results,CH_(3)COO^(-)(Ac^(-))anions are capable of forming stronger hydrogen bonds with H_(2)O molecules,leading to an expanded electrochemical stability window,reduced the reactivity of H_(2)O,and hence suppressing HER.Meanwhile,Ac-anions can also preferentially adsorb onto the Zn anode,promoting dense deposition towards the(100) crystal plane.Besides,dissociated K^(+) ions serve as electrostatic shielding cations,which significantly promote uniform Zn deposition and prevent dendrite formation.Thus,the Zn||Zn symmetric cell demonstrates an impressive cycle lifespan of 3000 h at 1.0 m A/cm^(2).Furthermore,the Zn||MnO_(2) full battery exhibits superior stability with a capacity retention of 86.95 % at 2.0 A/g after 4000 cycles.Therefore,the cation/anion synergy effect in KAc additive offers a viable solution to address HER and hinder dendrite growth at the interface of Zn anodes.展开更多
目的通过循证护理学方法,检索、评价并总结尘螨过敏人群的室内环境控制最佳证据,为室内尘螨防控和环境控制提供依据。方法检索BMJ Best Practice、UpToDate、BMJ Clinical Evidence等决策支持系统,国际和国家级指南库,以及Cochrane、Pub...目的通过循证护理学方法,检索、评价并总结尘螨过敏人群的室内环境控制最佳证据,为室内尘螨防控和环境控制提供依据。方法检索BMJ Best Practice、UpToDate、BMJ Clinical Evidence等决策支持系统,国际和国家级指南库,以及Cochrane、PubMed、Embase等数据库。检索关于室内尘螨防控的临床实践指南、证据总结、专家共识、系统评价、Meta分析,检索时限为建库至2023年12月24日。由2名研究者进行文献质量评价和资料提取。结果共纳入17篇文献,包括3篇临床决策、3篇指南、1篇证据总结、1篇专家共识、7篇系统评价和2篇Meta分析,归纳总结了25条最佳证据,主要涵盖以下内容:(1)人群干预:对于尘螨过敏原检测阳性或出现过敏症状的患者,建议采取多种联合措施控制尘螨过敏原;(2)湿度控制:通过除湿机、空调等设备控制室内相对湿度为35%~50%,结合使用湿度计监测;(3)家具和生活用品:建议移除地毯、毛绒玩具等易积尘物品,选择防螨床罩、枕套等过敏原屏障;(4)控螨措施:物理杀螨法(如加热、冷冻)及使用杀螨剂有效降低过敏原浓度;(5)定期使用HEPA吸尘器清洁室内环境;(6)家访与宣教:定期家访和过敏原管理教育可显著降低过敏原暴露并减少过敏症状。结论该研究总结的尘螨过敏性疾病患者室内环境控制最佳证据较为科学、全面,医护人员应根据环境实际、家庭情境对证据进行选择,为患者制订安全、科学、个体化的环境控制计划,以促进患者康复。展开更多
以β-环糊精、2-丙烯酰胺-2-甲基-1-丙基磺酸(AMPS)、N-乙烯基甲酰胺(NVF)与丙烯酰胺(AM)等单体为主要原料经过自由基聚合制备抗高温共聚物降滤失剂(DX)。通过FTIR测定聚合物体系结构,热失重分析聚合物体系的热性能。结果表明,降滤失剂D...以β-环糊精、2-丙烯酰胺-2-甲基-1-丙基磺酸(AMPS)、N-乙烯基甲酰胺(NVF)与丙烯酰胺(AM)等单体为主要原料经过自由基聚合制备抗高温共聚物降滤失剂(DX)。通过FTIR测定聚合物体系结构,热失重分析聚合物体系的热性能。结果表明,降滤失剂DX加量为2%时,在180℃、15%Na Cl的基浆中老化后滤失量仅为2.6 m L;在240℃、15%Na Cl的基浆中老化后滤失量为14 m L;在180~240℃的温度下具有不同的抗老化周期;在200℃、35%Na Cl的基浆中老化后滤失量为7.8 m L,加量为3%时在200℃、15%Na Cl基浆中高温高压滤失量为27 m L(200℃),同时具有良好的流变性能,展现出优良的抗高温抗盐降滤失性能。通过观察滤饼表面微观形貌及内部孔隙结构探究其作用机理。展开更多
文摘While the Ordos Basin is recognized for its substantial hydrocarbon exploration prospects,its rugged loess tableland terrain has rendered seismic exploration exceptionally challenging[1-3].Persistent obstacles such as complex 3D survey planning,low signal-tonoise ratio raw data,inadequate near-surface velocity modeling,and imaging inaccuracy have long hindered the advancement of seismic exploration across this region.Through a problem-solving approach rooted in geological target analysis,this research systematically investigates the behavioral patterns of nodal seismometer-based high-density seismic acquisition in loess plateau.Tailored advancements in waveform enhancement and depth velocity modelling methodologies have been engineered.Field validations confirm that the optimized workflow demonstrates marked improvements in amplitude preservation and imaging resolution,offering novel insights for future reservoir characterization endeavors.
基金financially supported by the National Natural Science Foundation of China (No.52372188)the 111 Project (No.D17007)2023 Introduction of studying abroad talent program。
文摘Aqueous zinc-ion batteries(AZIBs) have advantages including low economic cost and high safety.Nevertheless,the serious hydrogen evolution reactions(HER) and rampant growth of Zn dendrite hinder their further development.Herein,potassium acetate(KAc) additive with cation/anion synergy effect is added into the ZnSO_(4) electrolyte to effectively promote the oriented uniform Zn deposition and suppress side reactions.According to density functional theory calculation and experimental results,CH_(3)COO^(-)(Ac^(-))anions are capable of forming stronger hydrogen bonds with H_(2)O molecules,leading to an expanded electrochemical stability window,reduced the reactivity of H_(2)O,and hence suppressing HER.Meanwhile,Ac-anions can also preferentially adsorb onto the Zn anode,promoting dense deposition towards the(100) crystal plane.Besides,dissociated K^(+) ions serve as electrostatic shielding cations,which significantly promote uniform Zn deposition and prevent dendrite formation.Thus,the Zn||Zn symmetric cell demonstrates an impressive cycle lifespan of 3000 h at 1.0 m A/cm^(2).Furthermore,the Zn||MnO_(2) full battery exhibits superior stability with a capacity retention of 86.95 % at 2.0 A/g after 4000 cycles.Therefore,the cation/anion synergy effect in KAc additive offers a viable solution to address HER and hinder dendrite growth at the interface of Zn anodes.
文摘目的通过循证护理学方法,检索、评价并总结尘螨过敏人群的室内环境控制最佳证据,为室内尘螨防控和环境控制提供依据。方法检索BMJ Best Practice、UpToDate、BMJ Clinical Evidence等决策支持系统,国际和国家级指南库,以及Cochrane、PubMed、Embase等数据库。检索关于室内尘螨防控的临床实践指南、证据总结、专家共识、系统评价、Meta分析,检索时限为建库至2023年12月24日。由2名研究者进行文献质量评价和资料提取。结果共纳入17篇文献,包括3篇临床决策、3篇指南、1篇证据总结、1篇专家共识、7篇系统评价和2篇Meta分析,归纳总结了25条最佳证据,主要涵盖以下内容:(1)人群干预:对于尘螨过敏原检测阳性或出现过敏症状的患者,建议采取多种联合措施控制尘螨过敏原;(2)湿度控制:通过除湿机、空调等设备控制室内相对湿度为35%~50%,结合使用湿度计监测;(3)家具和生活用品:建议移除地毯、毛绒玩具等易积尘物品,选择防螨床罩、枕套等过敏原屏障;(4)控螨措施:物理杀螨法(如加热、冷冻)及使用杀螨剂有效降低过敏原浓度;(5)定期使用HEPA吸尘器清洁室内环境;(6)家访与宣教:定期家访和过敏原管理教育可显著降低过敏原暴露并减少过敏症状。结论该研究总结的尘螨过敏性疾病患者室内环境控制最佳证据较为科学、全面,医护人员应根据环境实际、家庭情境对证据进行选择,为患者制订安全、科学、个体化的环境控制计划,以促进患者康复。
文摘以β-环糊精、2-丙烯酰胺-2-甲基-1-丙基磺酸(AMPS)、N-乙烯基甲酰胺(NVF)与丙烯酰胺(AM)等单体为主要原料经过自由基聚合制备抗高温共聚物降滤失剂(DX)。通过FTIR测定聚合物体系结构,热失重分析聚合物体系的热性能。结果表明,降滤失剂DX加量为2%时,在180℃、15%Na Cl的基浆中老化后滤失量仅为2.6 m L;在240℃、15%Na Cl的基浆中老化后滤失量为14 m L;在180~240℃的温度下具有不同的抗老化周期;在200℃、35%Na Cl的基浆中老化后滤失量为7.8 m L,加量为3%时在200℃、15%Na Cl基浆中高温高压滤失量为27 m L(200℃),同时具有良好的流变性能,展现出优良的抗高温抗盐降滤失性能。通过观察滤饼表面微观形貌及内部孔隙结构探究其作用机理。
