目的高压氧(HBO)诱导的肺型氧中毒尚无有效的防治措施。该研究旨在阐明新斯的明(NEO)与山莨菪碱(ANI)联合(简称新斯莨菪碱)应用对肺型氧中毒的作用并初步探讨其机制。方法将C57BL/6小鼠暴露于2.5 ATA 99.9%氧气6 h制备肺型氧中毒模型,...目的高压氧(HBO)诱导的肺型氧中毒尚无有效的防治措施。该研究旨在阐明新斯的明(NEO)与山莨菪碱(ANI)联合(简称新斯莨菪碱)应用对肺型氧中毒的作用并初步探讨其机制。方法将C57BL/6小鼠暴露于2.5 ATA 99.9%氧气6 h制备肺型氧中毒模型,对照组小鼠给予生理盐水腹腔注射,治疗组小鼠给予ANI(25 mg/kg,腹腔注射)和NEO(50μg/kg,腹腔注射),暴露结束后取肺组织进行检测。HE染色观察肺组织的病理损伤情况;伊文思蓝染色通过检测肺通透性以及测定肺湿/干比及肺泡灌洗液中的蛋白含量来衡量肺损伤的严重程度;同时测定肺组织中炎症因子、氧化应激指标以及铁含量变化情况。结果与正常组相比,模型组的肺损伤程度显著加重,肺通透性、肺湿/干比以及肺泡灌洗液中蛋白含量同步增加;肺组织中促炎因子IL-1β、IL-6、TNF-α、IFN-γ的mRNA水平显著增加,抑炎因子IL-4、TGF-β明显降低;氧化指标MDA显著升高、抗氧化指标GSH则显著降低;铁含量升高,铁死亡的标志物GPX4表达量增加,而给予新斯莨菪碱治疗后能明显逆转上述变化。结论新斯莨菪碱对肺型氧中毒具有保护作用,可能通过激活胆碱能抗炎通路,从而抑制炎症和氧化应激的发生,进而减少了肺组织中游离铁的含量,最终抑制细胞铁死亡。展开更多
Ni/TiO_(2) catalyst is widely employed for photo-driven DRM reaction while the influence of crystal structure of TiO_(2) remains unclear.In this work,the rutile/anatase ratio in supports was successfully controlled by...Ni/TiO_(2) catalyst is widely employed for photo-driven DRM reaction while the influence of crystal structure of TiO_(2) remains unclear.In this work,the rutile/anatase ratio in supports was successfully controlled by varying the calcination temperature of anatase-TiO_(2).Structural characterizations revealed that a distinct TiO_(x) coating on the Ni nanoparticles(NPs)was evident for Ni/TiO_(2)-700 catalyst due to strong metal-support interaction.It is observed that the TiOx overlayer gradually disappeared as the ratio of rutile/anatase increased,thereby enhancing the exposure of Ni active sites.The exposed Ni sites enhanced visible light absorption and boosted the dissociation capability of CH4,which led to the much elevated catalytic activity for Ni/TiO_(2)-950 in which rutile dominated.Therefore,the catalytic activity of solar-driven DRM reaction was significantly influenced by the rutile/anatase ratio.Ni/TiO_(2)-950,characterized by a predominant rutile phase,exhibited the highest DRM reactivity,with remarkable H_(2) and CO production rates reaching as high as 87.4 and 220.2 mmol/(g·h),respectively.These rates were approximately 257 and 130 times higher,respectively,compared to those obtained on Ni/TiO_(2)-700 with anatase.This study suggests that the optimization of crystal structure of TiO_(2) support can effectively enhance the performance of photothermal DRM reaction.展开更多
The development of virtual currencies,network banking,and artificial intelligence technologies facilitates the implementation and completion of self-money laundering in crimes involving embezzlement and bribery.Amendm...The development of virtual currencies,network banking,and artificial intelligence technologies facilitates the implementation and completion of self-money laundering in crimes involving embezzlement and bribery.Amendment XI to the Criminal Law of the People's Republic of China lists self-money laundering as a separate money laundering crime,breaking the restrictive framework that it must be committed by someone else.This is reflective of the specific interest that China has in anti-money laundering.The criminalization of self-money laundering has been adopted as a powerful legal weapon against money laundering.However,it has confronted a series of dilemmas in terms of specific judicial applications.To gradually address the dilemmas in applying the clause,a comprehensive consideration of Chinese judicial and anti-money laundering practices,as well as international anti-money laundering regulations and practices,is carried out.Moreover,the following recommendations are given:that the protection of legal interests concerning self-money laundering should be expanded appropriately;that a penalty and cooperation system should be established for the crime of self-money laundering;and that the scope of the means of self-money laundering should be extended.展开更多
In this paper,we prove that there exists a unique local solution for the Cauchy problem of a system of the incompressible Navier-Stokes-Landau-Lifshitz equations with the Dzyaloshinskii-Moriya interaction and V-flow t...In this paper,we prove that there exists a unique local solution for the Cauchy problem of a system of the incompressible Navier-Stokes-Landau-Lifshitz equations with the Dzyaloshinskii-Moriya interaction and V-flow term inR^(2) and R^(3).Our methods rely upon approximating the system with a perturbed parabolic system and parallel transport.展开更多
Little is known about how the assessment modality,i.e.,computer-based(CB)and paper-based(PB)tests,affects language teachers’scorings,perceptions,and preferences and,therefore,the validity and fairness of classroom wr...Little is known about how the assessment modality,i.e.,computer-based(CB)and paper-based(PB)tests,affects language teachers’scorings,perceptions,and preferences and,therefore,the validity and fairness of classroom writing assessments.The present mixed-methods study used Shaw and Weir’s(2007)sociocognitive writing test validation framework to examine the scoring and consequential validity evidence of CB and PB writing tests in EFL classroom assessment in higher education.Original handwritten and word-processed texts of 38 EFL university students were transcribed to their opposite format and assessed by three language lecturers(N=456 texts,152 per teacher)to examine the scoring validity of CB and PB tests.The teachers’perceptions of text quality and preferences for assessment modality accounted for the consequential validity evidence of both tests.Findings revealed that the assessment modality impacted teachers’scorings,perceptions,and preferences.The teachers awarded higher scores to original and transcribed handwritten texts,particularly text organization and language use.The teachers’perceptions of text quality differed from their ratings,and physical,psychological,and experiential characteristics influenced their preferences for assessment modality.The results have implications for the validity and fairness of CB and PB writing tests and teachers’assessment practices.展开更多
文摘目的高压氧(HBO)诱导的肺型氧中毒尚无有效的防治措施。该研究旨在阐明新斯的明(NEO)与山莨菪碱(ANI)联合(简称新斯莨菪碱)应用对肺型氧中毒的作用并初步探讨其机制。方法将C57BL/6小鼠暴露于2.5 ATA 99.9%氧气6 h制备肺型氧中毒模型,对照组小鼠给予生理盐水腹腔注射,治疗组小鼠给予ANI(25 mg/kg,腹腔注射)和NEO(50μg/kg,腹腔注射),暴露结束后取肺组织进行检测。HE染色观察肺组织的病理损伤情况;伊文思蓝染色通过检测肺通透性以及测定肺湿/干比及肺泡灌洗液中的蛋白含量来衡量肺损伤的严重程度;同时测定肺组织中炎症因子、氧化应激指标以及铁含量变化情况。结果与正常组相比,模型组的肺损伤程度显著加重,肺通透性、肺湿/干比以及肺泡灌洗液中蛋白含量同步增加;肺组织中促炎因子IL-1β、IL-6、TNF-α、IFN-γ的mRNA水平显著增加,抑炎因子IL-4、TGF-β明显降低;氧化指标MDA显著升高、抗氧化指标GSH则显著降低;铁含量升高,铁死亡的标志物GPX4表达量增加,而给予新斯莨菪碱治疗后能明显逆转上述变化。结论新斯莨菪碱对肺型氧中毒具有保护作用,可能通过激活胆碱能抗炎通路,从而抑制炎症和氧化应激的发生,进而减少了肺组织中游离铁的含量,最终抑制细胞铁死亡。
基金The project was supported by the National Key R&D Program of China(2021YFF0500702)Natural Science Foundation of Shanghai(22JC1404200)+3 种基金Program of Shanghai Academic/Technology Research Leader(20XD1404000)Natural Science Foundation of China(U22B20136,22293023)Science and Technology Major Project of Inner Mongolia(2021ZD0042)the Youth Innovation Promotion Association of CAS。
文摘Ni/TiO_(2) catalyst is widely employed for photo-driven DRM reaction while the influence of crystal structure of TiO_(2) remains unclear.In this work,the rutile/anatase ratio in supports was successfully controlled by varying the calcination temperature of anatase-TiO_(2).Structural characterizations revealed that a distinct TiO_(x) coating on the Ni nanoparticles(NPs)was evident for Ni/TiO_(2)-700 catalyst due to strong metal-support interaction.It is observed that the TiOx overlayer gradually disappeared as the ratio of rutile/anatase increased,thereby enhancing the exposure of Ni active sites.The exposed Ni sites enhanced visible light absorption and boosted the dissociation capability of CH4,which led to the much elevated catalytic activity for Ni/TiO_(2)-950 in which rutile dominated.Therefore,the catalytic activity of solar-driven DRM reaction was significantly influenced by the rutile/anatase ratio.Ni/TiO_(2)-950,characterized by a predominant rutile phase,exhibited the highest DRM reactivity,with remarkable H_(2) and CO production rates reaching as high as 87.4 and 220.2 mmol/(g·h),respectively.These rates were approximately 257 and 130 times higher,respectively,compared to those obtained on Ni/TiO_(2)-700 with anatase.This study suggests that the optimization of crystal structure of TiO_(2) support can effectively enhance the performance of photothermal DRM reaction.
基金The project is the phased achievement of the National Scholarship Fund"National Construction High-level University Graduate Program"(No.CSC 202206040074)。
文摘The development of virtual currencies,network banking,and artificial intelligence technologies facilitates the implementation and completion of self-money laundering in crimes involving embezzlement and bribery.Amendment XI to the Criminal Law of the People's Republic of China lists self-money laundering as a separate money laundering crime,breaking the restrictive framework that it must be committed by someone else.This is reflective of the specific interest that China has in anti-money laundering.The criminalization of self-money laundering has been adopted as a powerful legal weapon against money laundering.However,it has confronted a series of dilemmas in terms of specific judicial applications.To gradually address the dilemmas in applying the clause,a comprehensive consideration of Chinese judicial and anti-money laundering practices,as well as international anti-money laundering regulations and practices,is carried out.Moreover,the following recommendations are given:that the protection of legal interests concerning self-money laundering should be expanded appropriately;that a penalty and cooperation system should be established for the crime of self-money laundering;and that the scope of the means of self-money laundering should be extended.
文摘In this paper,we prove that there exists a unique local solution for the Cauchy problem of a system of the incompressible Navier-Stokes-Landau-Lifshitz equations with the Dzyaloshinskii-Moriya interaction and V-flow term inR^(2) and R^(3).Our methods rely upon approximating the system with a perturbed parabolic system and parallel transport.
文摘Little is known about how the assessment modality,i.e.,computer-based(CB)and paper-based(PB)tests,affects language teachers’scorings,perceptions,and preferences and,therefore,the validity and fairness of classroom writing assessments.The present mixed-methods study used Shaw and Weir’s(2007)sociocognitive writing test validation framework to examine the scoring and consequential validity evidence of CB and PB writing tests in EFL classroom assessment in higher education.Original handwritten and word-processed texts of 38 EFL university students were transcribed to their opposite format and assessed by three language lecturers(N=456 texts,152 per teacher)to examine the scoring validity of CB and PB tests.The teachers’perceptions of text quality and preferences for assessment modality accounted for the consequential validity evidence of both tests.Findings revealed that the assessment modality impacted teachers’scorings,perceptions,and preferences.The teachers awarded higher scores to original and transcribed handwritten texts,particularly text organization and language use.The teachers’perceptions of text quality differed from their ratings,and physical,psychological,and experiential characteristics influenced their preferences for assessment modality.The results have implications for the validity and fairness of CB and PB writing tests and teachers’assessment practices.
