为了探究过瘤胃蛋氨酸(Rumen-protected methionine,RPM)对泌乳高峰期奶牛生产性能和全肠道消化率的影响,试验选取16头处于泌乳高峰期,体重、生理状况相似的健康荷斯坦奶牛,随机分为2组。对照组每日饲喂基础TMR日粮,RPM组每头牛在基础...为了探究过瘤胃蛋氨酸(Rumen-protected methionine,RPM)对泌乳高峰期奶牛生产性能和全肠道消化率的影响,试验选取16头处于泌乳高峰期,体重、生理状况相似的健康荷斯坦奶牛,随机分为2组。对照组每日饲喂基础TMR日粮,RPM组每头牛在基础日粮的基础上,每日单独补饲15 g RPM。结果表明:(1)泌乳高峰期奶牛日粮中添加RPM不影响体重、体况评分和干物质采食量(DMI)(P>0.05);(2)添加RPM对奶牛的产奶量和乳成分影响不显著(P>0.05);(3)添加RPM有降低瘤胃丁酸含量的趋势(P=0.069);(4)添加RPM不影响奶牛的表观消化率(P>0.05);(5)RPM显著提高了奶牛血浆尿素氮和二氧化碳水平(P<0.05);(6)RPM对血液中蛋氨酸的含量没有影响,脯氨酸浓度显著降低(P<0.05),具有降低血浆精氨酸和天冬氨酸含量的趋势(0.05<P<0.10)。总体而言,泌乳高峰期奶牛补饲RPM可能通过提高蛋氨酸吸收率、氨基酸代谢和机体蛋白合成改善泌乳高峰期奶牛健康状况。展开更多
Electrocatalytic glucose oxidation to high-value chemicals provides a sustainable route for biomass valorization.NiCo-based catalysts have emerged as promising candidates for glucose oxidation reaction owing to the in...Electrocatalytic glucose oxidation to high-value chemicals provides a sustainable route for biomass valorization.NiCo-based catalysts have emerged as promising candidates for glucose oxidation reaction owing to the intrinsic activity of Ni and Co catalytic centers.However,the dynamic evolution and atomic-scale synergy between these centers remain elusive.Herein,we fabricated NiCo_(2)O_(4)nanosheets supported on nickel foam,where Ni preferentially occupies tetrahedral sites to regulate the electronic configuration of octahedral Co.Experimental and theoretical results demonstrate that the incorporation of tetrahedral Ni induces low-to-intermediate spin transition in octahedral Co,thereby optimizing eg orbital occupancy and stabilizing active sites.This spin-state engineering establishes Ni-Co synergistic catalytic centers for the selective oxidation of glucose to formate(FA).At higher potential(≥1.4 V vs.RHE),octahedral Co undergoes reconstruction into excessive active CoOOH and CoO_(2)species,resulting in glucose overoxidation to CO_(2)and intensified competitive oxygen evolution.In contrast,at lower potentials(<1.4 V vs.RHE),tetrahedral Ni facilitates electron delocalization across the Ni–O–Co lattice,thereby stabilizing octahedral Co for glucose adsorption and oxidation.Subsequently,a coupled electrocatalytic system was constructed,achieving 80.7%FA yield with 91.3%Faradaic efficiency(FE)at NiCo_(2)O_(4)anode and H2 evolution rate of 696μmol h^(−1)with 99.9%FE at Pt cathode for 2 h under 1.35 V vs.RHE.This work provides a deep insight into spin-state regulation of the catalytic center,offering valuable guidance for rational catalyst design.展开更多
In this study,the dynamic characteristics of microscale floating bubbles near the vertical wall are studied.This occurrence is common in industrial and natural phenomena.Although many studies have been conducted on mi...In this study,the dynamic characteristics of microscale floating bubbles near the vertical wall are studied.This occurrence is common in industrial and natural phenomena.Although many studies have been conducted on microscale bubbles,few studies investigate floating bubbles with very small Reynolds number(Re)near the wall,which is the main research goal of this study.Therefore,this study establishes a model for the ascent of small-scale bubbles near a vertical wall using the interFoam solver in OpenFOAM.This study investigates the influences of diverse viscosity parameters,varying distances from the wall,and different gas flow rates on the terminal velocity,deformation,and motion trajectory of bubbles.The results reveal that as liquid viscosity increases,the Re of bubbles gradually decreases and reaches a minimum of 0.012,which is similar to the Re of micrometer-sized bubbles in water.The characteristics of the wall-induced force in the longitudinal direction are closely related to the changes in liquid viscosity.Under low-viscosity conditions,the induced lift is the principal form of action,whereas under high-viscosity conditions,it is primarily manifested as induced drag.展开更多
Micro/nanoplastics(M/NPs)have become pervasive environmental pollutants,posing significant risks to human health through various exposure routes,including ingestion,inhalation,and direct contact.This review systematic...Micro/nanoplastics(M/NPs)have become pervasive environmental pollutants,posing significant risks to human health through various exposure routes,including ingestion,inhalation,and direct contact.This review systematically examined the potential impacts of M/NPs on ocular health,focusing on exposure pathways,toxicological mechanisms,and resultant damage to the eye.Ocular exposure to M/NPs can occur via direct contact and oral ingestion,with the latter potentially leading to the penetration of particles through ocular biological barriers into ocular tissues.The review highlighted that M/NPs can induce adverse effects on the ocular surface,elevate intraocular pressure,and cause abnormalities in the vitreous and retina.Mechanistically,oxidative stress and inflammation are central to M/NP-induced ocular damage,with smaller particles often exhibiting greater toxicity.Overall,this review underscored the potential risks of M/NPs to ocular health and emphasized the need for further research to elucidate exposure mechanisms,toxicological pathways,and mitigation strategies.展开更多
Objective:To explore the molecular mechanism of Zixinyin oral liquid(ZOL)in the treatment of insomnia.Methods:The compounds and action targets of four herbal medicines in ZOL were collected via Traditional Chinese Med...Objective:To explore the molecular mechanism of Zixinyin oral liquid(ZOL)in the treatment of insomnia.Methods:The compounds and action targets of four herbal medicines in ZOL were collected via Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform.Genes corresponding to the targets were queried from the UniProt database.Genecards database was searched to screen the related targets of insomnia.A Gene Ontologyfunction enrichment analysis and a Kyoto Encyclopedia of Genes and Genomespathway enrichment analysis were performed by Database for Annotation,Visualization and Integrated Discovery.AutoDock software was used for molecular docking to verify the results of network analysis.Results:A total of 47 effective compounds and 187 potential targets of ZOL were screened out from the four drugs.A total of 2592 disease targets were screened out from the genecards database,and there were 1576 genes whose relevance score≥0.5.46 genes were obtained by taking the intersection of 187 potential targets of ZOL and 1,576 targets of insomnia.A total of 3,405 entries were obtained from Gene Ontologyfunctional enrichment(P<0.05).A total of 195 signaling pathways were obtained through a Kyoto Encyclopedia of Genes and Genomespathway analysis(P<0.05).Tumor necrosis factor,interleukin 17and hypoxia inducible factor-1signaling pathways were closely related to insomnia.The results of molecular docking show that all the core compounds of ZOL had a certain degree of affinity with gamma-aminobutyric acid receptor subunit alpha-1(GABRA1)and tumor necrosis factor-α(TNF-α).Paeoniflorgenone shows the highest affinity with GABRA1,and beta-sitosterol shows the highest affinity withTNF-α.ZOLmay have a therapeutic effect on insomnia through its action on targets such as GABRA1 and TNF-α,meanwhile regulating many signaling pathways.展开更多
基于语料库的情感隐喻研究是近年来认知语言学研究的热点,但国内外的情感隐喻语料库较为匮乏,难以提供资源支撑。为此,本研究对VUA隐喻语料库(Vrije University Amsterdam Metaphor Corpus)。进行情感标注,构建了一个包含“乐、好、怒...基于语料库的情感隐喻研究是近年来认知语言学研究的热点,但国内外的情感隐喻语料库较为匮乏,难以提供资源支撑。为此,本研究对VUA隐喻语料库(Vrije University Amsterdam Metaphor Corpus)。进行情感标注,构建了一个包含“乐、好、怒、哀、惧、恶、惊”7种情感的英文情感隐喻语料库,并探讨了情感隐喻的体裁和词性特点。研究发现:(1)英文中的主要情感隐喻是“好”和“恶”;(2)情感隐喻在体裁上存在差异,“好”在学术、新闻、小说中较多,“恶”较为均衡,“哀”在小说和新闻中较多;(3)情感隐喻密度由高到低排序为新闻、学术、小说、对话;(4)四种体裁的情感隐喻词性均以动词、介词和名词为主。展开更多
Volatile aromatic aldehydes,including benzaldehyde(BzH),4-fluorobenzaldehyde(4-F-BzH),4-isobutylbenzaldehyde(4-iBu-BzH),3-trifluoromethylbenzaldehyde(3-CF_(3)-BzH),p-methoxybenzaldehyde(4-MeO-BzH),and o-trifluoromethy...Volatile aromatic aldehydes,including benzaldehyde(BzH),4-fluorobenzaldehyde(4-F-BzH),4-isobutylbenzaldehyde(4-iBu-BzH),3-trifluoromethylbenzaldehyde(3-CF_(3)-BzH),p-methoxybenzaldehyde(4-MeO-BzH),and o-trifluoromethylbenzaldehyde(2-CF_(3)-BzH),are crucial raw materials for the synthesis of various pesticides and pharmaceuticals[1].展开更多
The present study assessed the efficacy and safety of thoracic radiotherapy(TRT)following first-line chemotherapy or chemoimmunotherapy in patients with extensive-stage small cell lung cancer(ES-SCLC),focusing on the ...The present study assessed the efficacy and safety of thoracic radiotherapy(TRT)following first-line chemotherapy or chemoimmunotherapy in patients with extensive-stage small cell lung cancer(ES-SCLC),focusing on the influence of different TRT timing strategies(consolidative vs.salvage)on survival rates.We retrospectively analyzed a total of 54 patients with ES-SCLC treated between January 2019 and July 2022.Patients receiving consolidative TRT(cTRT)within three months after completion of first-line treatment were compared with those receiving salvage TRT(sTRT)after disease progression.The primary endpoints were overall survival(OS),progression-free survival(PFS),locoregional-free survival(LRFS),and distant metastasis-free survival(DMFS);the secondary endpoint included safety.The cTRT group(n=41)showed significantly longer median OS(26.6 vs.14.8 months,P=0.048),PFS(12.9 vs.3.5 months,P<0.0001),and DMFS(10.7 vs.3.4 months,P=0.0044)than the sTRT group(n=13).Multivariate analysis revealed that cTRT was an independent,favorable prognostic factor.No significant differences in OS or LRFS were observed between high-dose(≥50 Gy)and low-dose(<50 Gy)TRT.Hematologic and respiratory toxicities were the most frequently reported adverse events,with acceptable tolerability.In conclusion,cTRT after chemoimmunotherapy significantly improves survival outcomes for ES-SCLC patients,and low-dose TRT may be a suitable option.展开更多
文摘为了探究过瘤胃蛋氨酸(Rumen-protected methionine,RPM)对泌乳高峰期奶牛生产性能和全肠道消化率的影响,试验选取16头处于泌乳高峰期,体重、生理状况相似的健康荷斯坦奶牛,随机分为2组。对照组每日饲喂基础TMR日粮,RPM组每头牛在基础日粮的基础上,每日单独补饲15 g RPM。结果表明:(1)泌乳高峰期奶牛日粮中添加RPM不影响体重、体况评分和干物质采食量(DMI)(P>0.05);(2)添加RPM对奶牛的产奶量和乳成分影响不显著(P>0.05);(3)添加RPM有降低瘤胃丁酸含量的趋势(P=0.069);(4)添加RPM不影响奶牛的表观消化率(P>0.05);(5)RPM显著提高了奶牛血浆尿素氮和二氧化碳水平(P<0.05);(6)RPM对血液中蛋氨酸的含量没有影响,脯氨酸浓度显著降低(P<0.05),具有降低血浆精氨酸和天冬氨酸含量的趋势(0.05<P<0.10)。总体而言,泌乳高峰期奶牛补饲RPM可能通过提高蛋氨酸吸收率、氨基酸代谢和机体蛋白合成改善泌乳高峰期奶牛健康状况。
基金financially supported by the National Natural Science Foundation of China (22472199)Chinese Universities Scientific Fund (15055009)Central University Guided Funds for Building World-Class Universities (Disciplines) and Advancing Characteristic Development
文摘Electrocatalytic glucose oxidation to high-value chemicals provides a sustainable route for biomass valorization.NiCo-based catalysts have emerged as promising candidates for glucose oxidation reaction owing to the intrinsic activity of Ni and Co catalytic centers.However,the dynamic evolution and atomic-scale synergy between these centers remain elusive.Herein,we fabricated NiCo_(2)O_(4)nanosheets supported on nickel foam,where Ni preferentially occupies tetrahedral sites to regulate the electronic configuration of octahedral Co.Experimental and theoretical results demonstrate that the incorporation of tetrahedral Ni induces low-to-intermediate spin transition in octahedral Co,thereby optimizing eg orbital occupancy and stabilizing active sites.This spin-state engineering establishes Ni-Co synergistic catalytic centers for the selective oxidation of glucose to formate(FA).At higher potential(≥1.4 V vs.RHE),octahedral Co undergoes reconstruction into excessive active CoOOH and CoO_(2)species,resulting in glucose overoxidation to CO_(2)and intensified competitive oxygen evolution.In contrast,at lower potentials(<1.4 V vs.RHE),tetrahedral Ni facilitates electron delocalization across the Ni–O–Co lattice,thereby stabilizing octahedral Co for glucose adsorption and oxidation.Subsequently,a coupled electrocatalytic system was constructed,achieving 80.7%FA yield with 91.3%Faradaic efficiency(FE)at NiCo_(2)O_(4)anode and H2 evolution rate of 696μmol h^(−1)with 99.9%FE at Pt cathode for 2 h under 1.35 V vs.RHE.This work provides a deep insight into spin-state regulation of the catalytic center,offering valuable guidance for rational catalyst design.
基金Supported by the National Natural Science Foundation of China(Grant No.52271319)the Jiangsu Funding Program for Excellent Postdoctoral Talent,and the Postdoctoral Fellowship Program of China Postdoctoral Science Foundation(Grant No.GZC20240618)the Natural Science Foundation of Jiangsu Province of China(BK20231525).
文摘In this study,the dynamic characteristics of microscale floating bubbles near the vertical wall are studied.This occurrence is common in industrial and natural phenomena.Although many studies have been conducted on microscale bubbles,few studies investigate floating bubbles with very small Reynolds number(Re)near the wall,which is the main research goal of this study.Therefore,this study establishes a model for the ascent of small-scale bubbles near a vertical wall using the interFoam solver in OpenFOAM.This study investigates the influences of diverse viscosity parameters,varying distances from the wall,and different gas flow rates on the terminal velocity,deformation,and motion trajectory of bubbles.The results reveal that as liquid viscosity increases,the Re of bubbles gradually decreases and reaches a minimum of 0.012,which is similar to the Re of micrometer-sized bubbles in water.The characteristics of the wall-induced force in the longitudinal direction are closely related to the changes in liquid viscosity.Under low-viscosity conditions,the induced lift is the principal form of action,whereas under high-viscosity conditions,it is primarily manifested as induced drag.
基金Supported by the Guangdong Provincial Natural Science Foundation(No.2114050001527).
文摘Micro/nanoplastics(M/NPs)have become pervasive environmental pollutants,posing significant risks to human health through various exposure routes,including ingestion,inhalation,and direct contact.This review systematically examined the potential impacts of M/NPs on ocular health,focusing on exposure pathways,toxicological mechanisms,and resultant damage to the eye.Ocular exposure to M/NPs can occur via direct contact and oral ingestion,with the latter potentially leading to the penetration of particles through ocular biological barriers into ocular tissues.The review highlighted that M/NPs can induce adverse effects on the ocular surface,elevate intraocular pressure,and cause abnormalities in the vitreous and retina.Mechanistically,oxidative stress and inflammation are central to M/NP-induced ocular damage,with smaller particles often exhibiting greater toxicity.Overall,this review underscored the potential risks of M/NPs to ocular health and emphasized the need for further research to elucidate exposure mechanisms,toxicological pathways,and mitigation strategies.
基金This work was supported by the Hubei Science and Technology Program(No.2020CFB231)Youth Talent Project of Health Commission of Hubei Province(No.ZY2021Q026)Hubei University of Science and Technology Doctoral Startup Fund Project(No.BK202029).
文摘Objective:To explore the molecular mechanism of Zixinyin oral liquid(ZOL)in the treatment of insomnia.Methods:The compounds and action targets of four herbal medicines in ZOL were collected via Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform.Genes corresponding to the targets were queried from the UniProt database.Genecards database was searched to screen the related targets of insomnia.A Gene Ontologyfunction enrichment analysis and a Kyoto Encyclopedia of Genes and Genomespathway enrichment analysis were performed by Database for Annotation,Visualization and Integrated Discovery.AutoDock software was used for molecular docking to verify the results of network analysis.Results:A total of 47 effective compounds and 187 potential targets of ZOL were screened out from the four drugs.A total of 2592 disease targets were screened out from the genecards database,and there were 1576 genes whose relevance score≥0.5.46 genes were obtained by taking the intersection of 187 potential targets of ZOL and 1,576 targets of insomnia.A total of 3,405 entries were obtained from Gene Ontologyfunctional enrichment(P<0.05).A total of 195 signaling pathways were obtained through a Kyoto Encyclopedia of Genes and Genomespathway analysis(P<0.05).Tumor necrosis factor,interleukin 17and hypoxia inducible factor-1signaling pathways were closely related to insomnia.The results of molecular docking show that all the core compounds of ZOL had a certain degree of affinity with gamma-aminobutyric acid receptor subunit alpha-1(GABRA1)and tumor necrosis factor-α(TNF-α).Paeoniflorgenone shows the highest affinity with GABRA1,and beta-sitosterol shows the highest affinity withTNF-α.ZOLmay have a therapeutic effect on insomnia through its action on targets such as GABRA1 and TNF-α,meanwhile regulating many signaling pathways.
文摘基于语料库的情感隐喻研究是近年来认知语言学研究的热点,但国内外的情感隐喻语料库较为匮乏,难以提供资源支撑。为此,本研究对VUA隐喻语料库(Vrije University Amsterdam Metaphor Corpus)。进行情感标注,构建了一个包含“乐、好、怒、哀、惧、恶、惊”7种情感的英文情感隐喻语料库,并探讨了情感隐喻的体裁和词性特点。研究发现:(1)英文中的主要情感隐喻是“好”和“恶”;(2)情感隐喻在体裁上存在差异,“好”在学术、新闻、小说中较多,“恶”较为均衡,“哀”在小说和新闻中较多;(3)情感隐喻密度由高到低排序为新闻、学术、小说、对话;(4)四种体裁的情感隐喻词性均以动词、介词和名词为主。
基金supported by National Natural Science Foundation of China(22361031,22308260).
文摘Volatile aromatic aldehydes,including benzaldehyde(BzH),4-fluorobenzaldehyde(4-F-BzH),4-isobutylbenzaldehyde(4-iBu-BzH),3-trifluoromethylbenzaldehyde(3-CF_(3)-BzH),p-methoxybenzaldehyde(4-MeO-BzH),and o-trifluoromethylbenzaldehyde(2-CF_(3)-BzH),are crucial raw materials for the synthesis of various pesticides and pharmaceuticals[1].
基金supported by the Young Talents Program of Jiangsu Cancer Hospital(Grant No.QL201802)the Science and Technology Development Fund of Jiangsu Cancer Hospital(Grant No.ZL202105).
文摘The present study assessed the efficacy and safety of thoracic radiotherapy(TRT)following first-line chemotherapy or chemoimmunotherapy in patients with extensive-stage small cell lung cancer(ES-SCLC),focusing on the influence of different TRT timing strategies(consolidative vs.salvage)on survival rates.We retrospectively analyzed a total of 54 patients with ES-SCLC treated between January 2019 and July 2022.Patients receiving consolidative TRT(cTRT)within three months after completion of first-line treatment were compared with those receiving salvage TRT(sTRT)after disease progression.The primary endpoints were overall survival(OS),progression-free survival(PFS),locoregional-free survival(LRFS),and distant metastasis-free survival(DMFS);the secondary endpoint included safety.The cTRT group(n=41)showed significantly longer median OS(26.6 vs.14.8 months,P=0.048),PFS(12.9 vs.3.5 months,P<0.0001),and DMFS(10.7 vs.3.4 months,P=0.0044)than the sTRT group(n=13).Multivariate analysis revealed that cTRT was an independent,favorable prognostic factor.No significant differences in OS or LRFS were observed between high-dose(≥50 Gy)and low-dose(<50 Gy)TRT.Hematologic and respiratory toxicities were the most frequently reported adverse events,with acceptable tolerability.In conclusion,cTRT after chemoimmunotherapy significantly improves survival outcomes for ES-SCLC patients,and low-dose TRT may be a suitable option.
