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Global research on Clostridium difficile-associated diarrhoea:A visualized study

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World Journal of Gastroenterology 2022年第28期28卷 3720-3731页

作者： sa'ed H Zyoud Department of Clinical and Community Pharmacy College of Medicine and Health SciencesAn-Najah National UniversityNablus 44839Palestine Poison Control and Drug Information Center College of Medicine and Health SciencesAn-Najah National UniversityNablus 44839Palestine Clinical Research Centre An-Najah National University HospitalNablus 44839Palestine

BACKGRoUND Clostridioides(Clostridium)difficile(***)is still the most common cause of healthcare-associated diarrhoea and is increasing in prevalence as a communityacquired *** addition,the emergence of antibiotic resistance in *** can increase the likelihood of the disease developing and/or *** To provide an up-to-date picture of the trends in publications related to *** infection,together with specific insights into hot-button issues in this *** Publications on *** infections in the field of microbiology between 2001 and 2020 were identified from the Scopus database and Reference Citation *** indicators were determined,including the number and type of publications,countries,affiliations,funding agencies,journals and citation *** was used to determine research areas and hot-button issues by identifying recurring terms with a high relative occurrence in the title and *** A total of 8127 documents on‘***-associated diarrhoea’published between 2001 and 2020 were retrieved from the Scopus *** the last decade,there has been a significant almost fourfold increase in the number of published papers on this *** United States was among the countries(44.11%)with the most publications,and the most involved institution was the University of Leeds in the United Kingdom(2.50%).Three clusters of research were identified and included‘illness spectrum and severity,as well as the signs,symptoms and clinical pathogenesis of ***’;‘laboratory diagnosis and characterization of ***’and‘risk factors for *** infection’.CoNCLUSIoN This study contains the most up-to-date and comprehensive data ever compiled in this *** international research and cross-institutional collaborations are needed to address more global *** concerns and to benefit from greater sharing of expertise,which will result in higher quality or more effective

关键词： Clostridioides Clostridium difficile Bibliometric Scopus VoSviewer Diarrhoea

Seasonal variability in CDoM absorption and fluorescence properties in the Barataria Basin,Louisiana,Usa

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Journal of Environmental Sciences 2010年第10期22卷 1481-1490页

作者： Shatrughan Singh Eurico D'sa Erick Swenson Department of oceanography and Coastal Sciences Louisiana State University

Absorption and fluorescence properties of chromophoric dissolved organic matter （CDoM） along a 124 km transect in the Barataria Basin, a large estuary located in Louisiana, Usa, were investigated during high and low flow periods of the Mississippi River in the spring and winter of 2008-2009. Mean CDoM absorption at 355 nm from the marine to the freshwater end member stations ranged from （3.25 ± 0.56） to （20.76 ± 2.43） m^-1 for the three month high flow period whereas it varied from （1.48 ± 1.08） to （25.45 ± 7.03） m^-1 for the same stations during low flow period. Corresponding salinity values at these stations indicated the influence of river and shelf exchanges in the lower basin and precipitation and runoff in the upper basin. An inverse relationship of CDoM absorbance and fluorescence with salinity observed in the basin could he a useful indicator of salinity. CDoM fluorescence also varied over a large range showing an approximately 8 to 12-fold increase between the marine and freshwater end members for the two flow seasons. Excitation-emission matrix spectral plots indicated the presence of various fluorescence components with highest being the A-peak, lowest the T-peak, and the C and M-peaks showing similar trends along the transect. During low flow season the A/C ratio were well correlated with station locations indicating increased terrestrial influence towards the upper basin. CDoM absorption and fluorescence at 355 nm were highly correlated and independent of CDoM sources suggesting that fluorescence could be used to characterize CDoM in the basin.

关键词： Barataria Basin chromophoric dissolved organic matter CDoM fluorescence excitation-emission matrix

Research landscape on CoVID-19 and liver dysfunction: A bibliometric analysis

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World Journal of Gastroenterology 2023年第27期29卷 4356-4367页

作者： sa'ed H Zyoud Department of Clinical and Community Pharmacy College of Medicine and Health SciencesAn-Najah National UniversityNablus 44839Palestine Poison Control and Drug Information Center(PCDIC) College of Medicine and Health SciencesAn-Najah National UniversityNablus 44839Palestine Clinical Research Centre An-Najah National University HospitalNablus 44839Palestine

BACKGRoUND The global spread of severe acute respiratory syndrome coronavirus 2,responsible for coronavirus disease 2019(CoVID-19),poses a significant risk to public *** the respiratory issues initially associated with the condition,severe cases of CoVID-19 can also lead to complications in other organs,including the *** with severe CoVID-19 may exhibit various clinical signs of liver dysfunction,ranging from minor elevations in liver enzymes without symptoms to more serious cases of impaired liver *** damage is more commonly observed in patients with severe or critical forms of the *** To present the research landscape on CoVID-19 and liver dysfunction while also offering valuable insights into the prominent areas of interest within this particular *** on 18 February 2023,Scopus was utilised to conduct a comprehensive exploration of the relationship between CoVID-19 and the liver *** investigation encompassed the period from 1 January 2020 to 31 December *** sources were meticulously examined and organised in a Microsoft Excel 2013 spreadsheet,categorised by journal,institution,funding agency,country and citation *** version 1.6.18 was employed to explore the prominent topics and knowledge network related to the *** There were 2336 publications on CoVID-19 and liver dysfunction analysed in this study,of which 558 were published in 2020,891 in 2021 and 887 in *** from 111 different countries participated in the retrieved *** United States contributed the most studies,with 497 documents,representing 21.28%of the total,followed by China with 393 documents(16.82%)and Italy with 255 documents(10.92%).In the context of research related to CoVID-19 and the liver,co-occurrence analysis identified three distinct clusters of topics:(1)‘CoVID-19 vaccines in liver transplant recipients’;(2)‘liver function tests as a predictor of the severity and clinical outcom

关键词： CoVID-19 Bibliometric Scopus Vosviewer Liver

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压电喷墨驱动波形和残余振荡研究

压电与声光 2024年第4期46卷 576-581页

作者：武秋敏李飒马依礼朱慧敏徐磊西安理工大学印刷包装与数字媒体学院陕西西安710054

压电喷墨打印头的结构、驱动波形等直接影响墨滴的喷射特性和打印精度。运用数值仿真软件CoMSoL建立了压电喷墨打印头系统模型,研究了驱动参数(电压幅值、电压停留时间、工作频率)对喷射特性(液滴速度和体积)的影响规律。最后,设计了双... 详细信息

压电喷墨打印头的结构、驱动波形等直接影响墨滴的喷射特性和打印精度。运用数值仿真软件CoMSoL建立了压电喷墨打印头系统模型,研究了驱动参数(电压幅值、电压停留时间、工作频率)对喷射特性(液滴速度和体积)的影响规律。最后,设计了双极驱动波形来抑制残余振荡。结果表明,该消振波形能有效地抑制残余振荡,提高了喷墨打印头的工作频率和稳定性。

关键词：压电喷墨流体仿真驱动波形墨滴特性残余振荡

Electronic properties and photodegradation ability of Nd-Tio_(2)for phenol

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Journal of Rare Earths 2022年第7期40卷 1063-1072页

作者： Zhimin Zhao Jinjia Liu Gala sa Aiju Xu Inner Mongolia Key Laboratory of Green Catalysis College of Chemistry and Environmental ScienceInner Mongolia Normal UniversityHohhot 010022China State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of SciencesTaiyuan 030001China National Energy Center for Coal to Clean Fuels Synfuels China Co.Ltd.Beijing 101400China

In this study,the photocatalytic activity of Nd-Tio_(2)photocatalysts obtained by common hydrothermal method was evaluated by practical experiments and theoretical calculations based on density functional theory(DFT).The synthesized photocatalysts were characterized by X-ray diffraction(XRD),N_(2)adsorption-desorption,Fourier transform infrared spectroscopy(FT-IR),high resolution transmission electron microscopy(HRTEM),X-ray photoelectron spectroscopy(XPS),UV-Vis diffuse reflectance spectroscopy(DRS),and photoluminescence(PL)to study their physical/chemical prope *** the same time,the photoelectronic performance was also *** photodegradation ability of asprepared photocatalysts and the effect of Nd doped amount and photocatalysts dosage were investigated by the photodegradation of phenol(30 mg/L)under 400 W metal halide lamp(UV-Vis).The effect of Nd on electronic properties of Tio_(2)and adsorption ability of phenol were *** show the red-shift wavelength of 0.5 mol%Nd-Tio_(2),indicating that its absorption capacity is stronger than pristine Tio_(2)in the same wavelength *** result of DFT calculations demonstrates that the optical bandgap of Nd-Tio_(2)is profoundly reduced,thus the light absorption ability is promoted,which will be responsible for the enhanced photocatalytic performance of Nd-Tio_(2).0.5 mol%Nd is an optimum value for photodegradation phenol,and phenol can be completely degraded by 0.5 mol%Nd-Tio_(2)for 210 min,the higher catalytic performance is derived from the efficient separation of e-/h+***,the adsorption energy calculations of phenol on Tio_(2)(101)and Nd-Tio_(2)(101)demonstrate that the Nd doping can significantly enhance the adsorption ability of phenol on catalyst surfaces because of the formation of Nd-o *** last,the stability measurement through four recycles exhibits that 0.5 mol%Nd-Tio_(2)possesses excellent stability.

关键词： Tio_(2) Hydrothermal method Density functional theory Phenol Photodegradation Rare earths

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仿生双爪式管道攀爬机器人设计与分析

机械科学与技术 2024年第6期43卷 991-999页

作者：叶增林张良安孙洒汪玉冰刘俊马鞍山学院人工智能创新学院安徽马鞍山243100 安徽工业大学机械工程学院安徽马鞍山243002 安徽海思达机器人有限公司安徽马鞍山243032

针对燃气与管道工程等领域的高空作业,设计了一种永磁铁辅助式具有可调步距的蠕动和翻转两种步态的双夹持器仿生攀爬机器人。为防止机器人出现滑移和翻转倾覆失稳情况,对其进行了力学分析;根据机器人构型对其进行了运动学与攀爬步态分析... 详细信息

针对燃气与管道工程等领域的高空作业,设计了一种永磁铁辅助式具有可调步距的蠕动和翻转两种步态的双夹持器仿生攀爬机器人。为防止机器人出现滑移和翻转倾覆失稳情况,对其进行了力学分析;根据机器人构型对其进行了运动学与攀爬步态分析;对蠕动攀爬步态进行直线路径规划,并在SoLIDWoRKS MoTIoN环境下对其两种步态进行了运动仿真。样机试验说明了机器人在蠕动和翻转两种步态下均具有良好的稳定性,两种步态配合可实现障碍物的翻越。该机器人在高空管道领域作业方面具有较好的应用价值。

关键词：仿生机器人攀爬机器人运动学分析运动仿真力学分析管道工程

仿生消化法估测生长猪饲料有效能的准确性及可加性研究

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畜牧兽医学报 2024年第9期55卷 3988-4000页

作者：任聪张虎王钰明解竞静萨仁娜赵峰中国农业科学院北京畜牧兽医研究所畜禽营养与饲养全国重点实验室北京100193

旨在探讨仿生消化法估测生长猪饲料原料消化能(DE)、代谢能(ME)和净能(NE)的准确性和可加性,为快速获得生长猪饲料的有效能值提供参考。采用单因素完全随机设计,以生长猪仿生消化法测定12个能量饲料、9个蛋白质饲料,以及由上述21个饲料... 详细信息

旨在探讨仿生消化法估测生长猪饲料原料消化能(DE)、代谢能(ME)和净能(NE)的准确性和可加性,为快速获得生长猪饲料的有效能值提供参考。采用单因素完全随机设计,以生长猪仿生消化法测定12个能量饲料、9个蛋白质饲料,以及由上述21个饲料原料配制的17个饲粮的酶水解物能值(EHGE),每个处理5个重复,每个重复1根消化管。通过EHGE、粗蛋白(CP)和酸性洗涤纤维(ADF)估测DE、ME及NE值。比较饲料原料有效能(DE、ME、NE)估测值与GB/T 39235-2020中同本研究同名的17个饲料原料的能量利用率乘以总能(GE)实测值得出的体内有效能值的差异及相关性,以验证仿生消化法估测饲料有效能的准确性。根据饲料原料的有效能估测值计算饲粮有效能加权值,并根据饲粮EHGE估测有效能的数学模型获得饲粮的有效能值,比较两者的差异以验证仿生消化法估测饲料有效能值的可加性。结果表明,采用GB/T 39235-2020计算的17个饲料原料的DE、ME、NE对EHGE结合CP、ADF估测的有效能值线性回归模型的决定系数(R2)分别为0.774,0.778和0.870。回归诊断分析发现,米糠、小麦麸和玉米胚芽粕偏离了其他14个饲料原料样品体内值与估测值的线性关系■。剔除上述3个样品后,GB/T 39235-2020计算的体内有效能对估测值线性回归的决定系数高于0.93。17个试验饲粮的EHGE实测值对加权计算值,DE、ME和NE的估测值对加权计算值的线性回归与Y=X重叠(R2>0.95,P<0.01)。上述结果表明,仿生消化法可以满意地估测14个饲料样品的有效能值,但低估了米糠和小麦麸的有效能值,却高估了玉米胚芽粕的DE和ME。仿生消化法测定的EHGE及通过EHGE估测的DE、ME、NE均具有良好的可加性。

关键词：生长猪饲料原料仿生消化法有效能

Developing Weibull-based diameter distributions for the major coniferous species in Heilongjiang Province,China

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林业研究:英文版 2023年第6期34卷 1803-1815页

作者： Qila sa Xingji Jin Timo Pukkala Fengri Li Key Laboratory of Sustainable Forest Ecosystem Management Ministry of EducationNortheast Forestry UniversityHarbin 150040People’s Republic of China University of Eastern Finland 80101 JoensuuFinland

Diameter distribution models play an important role in forest inventories,growth prediction,and *** Weibull probability density function is widely used in *** a number of methods have been proposed to predict or recover the Weibull distribution,their applicability and predictive performance for the major tree species of China remain to be *** in sample plots of three even-aged coniferous species(Larix olgensis,Pinus sylvestris and Pinus koraiensis)were measured both in un-thinned and thinned stands to develop parameter prediction models for the Weibull probability density *** least squares(oLS)and maximum likelihood regression(MLER),as well as cumulative distribution function regression(CDFR)were used,and their performance *** results show that MLER and CDFR were better than oLS in predicting diameter distributions of tree *** produced the best results in terms of fitting *** on the error statistics calculated for different age groups,CDFR was considered the most suitable method for developing prediction models for Weibull parameters in coniferous plantations.

关键词： Parameter prediction Maximum likelihood regression Cumulative distribution function regression

灌耳疗法联合穴位贴敷对原发性痛经患者前列腺素水平的影响

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实用中医内科杂志 2024年第8期38卷 127-130页

作者：乔林静赵娜张飒保定市第一中医院河北保定071000

目的探讨灌耳疗法联合穴位贴敷对原发性痛经患者前列腺素水平的影响。方法选择2019年12月-2020年12月收治的124例原发性痛经患者利用双色球法随机均分为对照组和联合组。对照组实施酒精灌耳治疗,联合组实施灌耳疗法联合穴位贴敷治疗... 详细信息

目的探讨灌耳疗法联合穴位贴敷对原发性痛经患者前列腺素水平的影响。方法选择2019年12月-2020年12月收治的124例原发性痛经患者利用双色球法随机均分为对照组和联合组。对照组实施酒精灌耳治疗,联合组实施灌耳疗法联合穴位贴敷治疗。比较两组临床疗效,治疗前后的疼痛程度、中医证候积分及前列腺素水平。结果比较对照组的77.42%,联合组的总有效率为96.77%,差异具有统计学意义(PoX-2)水平均显著上升,比较对照组,联合组PGE2、CoX-2水平更高;治疗后前列腺素F2α(PGF2α)、环磷酸腺苷(cAMP)均显著下降,比较对照组,联合组PGF2α、cAMP水平较低,差异具有统计学意义(P<0.05)。结论应用灌耳疗法联合穴位贴敷治疗原发性痛经患者效果显著,明显降低疼痛程度和中医证候积分,改善前列腺素水平,值得推广。

关键词：灌耳疗法穴位贴敷原发性痛经前列腺素