检索结果-南通市图书馆

ChemPhysMater 2024年第1期3卷 83-93页

作者： Mylarappa M N.raghavendra N.r.bhumika C.h.Chaithra b.N.Nagalaxmi K.N.Shravana Kumara Department of Chemistry Sri Jagadguru Renukacharya College of ScienceArts&CommerceBengaluru 560009India Department of Chemistry East West Institute of TechnologyBengaluru 560091India Department of Chemistry Maharani Lakshmi Ammanni College for WomenBengaluru 560012India

In view of the current study’s demonstration of the synthesis of clay-doped ZnO composites,we present a low-cost method for producing clay-metal oxide(clay/ZnO).Utilizing the solution combustion technique,a composite of clay/ZnO was produced utilizing citric acid as both a fuel and a complexing *** hexagonal unit cell structure of the created clay/ZnO may be seen using XrD *** ZnO-infused clay was visible in FE-SEM micrographs as homogenous,sphere-shaped *** possible involvement of clay/ZnO photocatalytic activity in the UV-induced photodegradation of malachite green dye was *** 90%degradation rate shows the composite’s outstanding photocatalytic degradation *** resulting substance was electrochemically analyzed using a constructed electrode in 0.1 M KOh *** increased its sensor capabilities,which now include chemical and biomolecule sensors,and it excelled in cyclic voltammetry-based redox potential *** efficiently evaluate chemically synthesized NPs for electrochemical,sensing,and photocatalytic applications,this study intends to create a solution combustion procedure for the synthesis of clay/ZnO nanocomposite using urea as fuel.

关键词： Clay Clay/ZnO Photocatalytic Electrochemical sensors

益生菌制剂对抗生素诱导腹泻模型小鼠肠道菌群的调节作用

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

现代食品科技 2024年第2期40卷 1-8页

作者：黄莉莉颜克旭李玟玟张振华马青马微微黑龙江中医药大学药学院黑龙江哈尔滨150040

研究了益生菌制剂对腹泻模型(Antibiotic-Associated Diarrhea,AAD)小鼠肠道菌群的调节作用。bALb/c小鼠随机分为6组,每组8只,灌胃给予氨苄青霉素(22.4 g/kg),建立小鼠腹泻模型,空白组给予等体积生理盐水。模型建立后,阳性组灌胃给予培... 详细信息

研究了益生菌制剂对腹泻模型(Antibiotic-Associated Diarrhea,AAD)小鼠肠道菌群的调节作用。bALb/c小鼠随机分为6组,每组8只,灌胃给予氨苄青霉素(22.4 g/kg),建立小鼠腹泻模型,空白组给予等体积生理盐水。模型建立后,阳性组灌胃给予培菲康(8 g/kg)、益生菌制剂低、中、高剂量组(2.5×10^(6)、5×10^(6)、1×10^(7) CFU)给予复合益生菌制剂,模型组和空白组给予等体积生理盐水,连续14 d。观察益生菌制剂对小鼠体质量、稀便率、稀便级和腹泻指数的影响,测定小鼠IgA、IgG水平,肠道屏障功能相关基因表达水平以及肠道菌群组成。结果表明,与模型组相比三个剂量组在给予益生菌第14天时小鼠稀便率、稀便级和腹泻指数显著降低,IgA水平分别提高13.30%、20.25%、25.83%,IgG水平分别提高6.84%、19.81%、29.64%,TLr4基因表达水平下调16.88%、20.78%、40.91%,NF-κb基因表达水平下调24.91%、37.19%、55.79%,肠道双歧杆菌、乳杆菌数量明显增加,产气荚膜梭菌、肠球菌、肠杆菌数量明显减少。综上所述,益生菌制剂通过调节肠道菌群,调节免疫球蛋白水平,发挥改善AAD作用。

关键词：益生菌抗生素相关性腹泻免疫球蛋白肠道菌群

维普期刊数据库博看期刊

In situ TEM investigation of electron irradiation and aging-induced high-density nanoprecipitates in an Mg-10Gd-3Y-1Zn-0.5Zr alloy

在线全文

学校读者我要写书评

暂无评论

Journal of Magnesium and Alloys 2024年第5期12卷 1841-1853页

作者： M.Lv h.L.Ge Q.Q.Jin X.h.Shao Y.T.Zhou b.Zhang X.L.Ma Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of Sciences72 Wenhua RoadShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Materials Science and Engineering research Center Guangxi University of Science and TechnologyLiuzhou 545006China

In-situ electron irradiation and aging are applied to introduce high-density precipitates in an Mg-10Gd-3Y-1Zn-0.5Zr(GWZ1031K,wt.%)alloy to improve the *** results show that the hardness of the Mg alloy after irradiation for 10 h and aging for 9 h at 250℃ is 1.64 GPa,which is approximately 64% higher than that of the samples before being *** is mainly attributed to γ'precipitates on the basal plane after irradiation and the high-density nanoscale β'precipitates on the prismatic plane after aging,which should be closely related to the irradiation-induced homogenous *** latter plays a key role in precipitation *** result paves a way to improve the mechanical properties of metallic materials by tailoring the precipitation through irradiation and aging.

关键词： Mg alloy Electron beam irradiation hardening Precipitates In-situ TEM

维普期刊数据库

Mitigating Urban heat Island Effects: A review of Innovative Pavement Technologies and Integrated Solutions

在线全文

学校读者我要写书评

暂无评论

Structural Durability & health Monitoring 2024年第5期18卷 525-551页

作者： S.F.Ismael A.h.Alias N.A.haron b.b.Zaidan Abdulrahman M.Abdulghani Department of Civil Engineering Faculty of EngineeringUniversiti Putra MalaysiaSerdang43400Malaysia Central region Heavy Civil DivisionGranite ConstructionWoodlandsTexas77381USA SP Jain School of Global Management LidcombeSydneyNSW2141Australia Department of Communication Technology and Network Faculty of Computer Science and Information TechnologyUniversiti Putra MalaysiaSerdang43400Malaysia

In this review paper,we present a thorough investigation into the role of pavement technologies in advancing urban *** analysis traverses the historical evolution of these technologies,meticulously evaluating their socio-economic and environmental impacts,with a particular emphasis on their role in mitigating the urban heat island *** evaluation of pavement types and variables inﬂuencing pavement performance to be used in the multi-criteria decision-making(MCDM)framework to choose the optimal pavement application are at the heart of our *** serves to assess a spectrum of pavement options,revealing insights into the most effective and sustainable *** highlighting both the existing challenges and potential innovative solutions within theﬁeld,this paper aims to offer a directional compass for future urban planning and infrastructural *** review not only synthesizes the current state of knowledge but also aims to chart a course for future exploration,emphasizing the critical need for innovative and environmentally sensitive pavement tech-nologies in the creation of resilient and sustainable urban environments.

关键词： Pavement sustainability urban heat island environmental impact of pavements innovative pavement solutions economic and social implications sustainable development in urban areas

The use of new class α-amino nitrile modified magnetic adsorbents for removal of Cd(II) from aqueous medium: Sorbent modification vs. α-amino nitrile addition to the adsorption medium

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Emerging Contaminants 2024年第1期10卷 32-46页

作者： Eyad A.Younes Amjad h.El-Sheikh rawan b.Alsmadi Department of Chemistry Faculty of ScienceThe Hashemite UniversityP.O.Box 330127Zarqa13133Jordan

In the present work,some novel α-amino nitriles were prepared:amino-2-(anthracen-9-yl)acetonitrile(AAN),and 2-(naphthalen-1-yl)-2-((triethoxysilyl)propyl)amino)acetonitrile(Si-AN).With the aid of other organic compounds(3-aminopropyl triethoxysilane“APTES”and tetraethyl orthosilicate“TEOS”),the following carbon nanotubes“CNT”and magnetite“Mag”based adsorbents were prepared:CNT-AAN,Mag-SiO_(2),Mag-SiO_(2)-APTES,Mag-SiO_(2)-*** FT-Ir,1h and 13C NMr spectroscopy proved the formation of(C triple bond N)and(Nh-)bonds which indicated successful amino nitrile modification of the *** ability of the above-mentioned adsorbents to remove cadmium“Cd(II)”from water was studied at various ph *** modification with AAN reduced Cd(II)uptake,while all Mag modifications increased Cd *** addition of AAN to the extraction medium with CNT sorbent reduced Cd(II)*** addition of TEOS and Si-AN to the extraction medium for Cd(II)removal using Mag was studied where a positive impact was *** on the above experiments,it was decided to use Mag as adsorbent with the addition of Si-AN to the extraction *** optimization recommended ph 8 and Cd:Si-AN molar ratio of 1:*** maximum adsorption capacity towards Cd(II)achieved in this study was 65 mg g^(−1).The method selectivity,re-usability and applicability on well water and tap water samples gave appropriate *** adsorption of Cd(II)on Mag in the presence of Si-AN was fast,endothermic,spontaneous,favored and physi-sorption was predominant.

关键词： Amino nitriles Magnetite Carbon nanotubes Cadmium uptake

relevance of plasma lipoproteins and small metabolites in assessment of nutritional status among patients with severe injuries

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Intensive Medicine 2024年第4期4卷 496-507页

作者： Esmee A.h.Verheul Suzan Dijkink Pieta Krijnen Aswin Verhoeven Martin Giera roula Tsonaka Jochem M.hoogendoorn Sesmu M.Arbous ron Peters Inger b.Schipper Department of Trauma Surgery Leiden University Medical CenterLeidenThe Netherlands Acute Care Network West Netherlands LeidenThe Netherlands Center for Proteomics and Metabolomics Leiden University Medical CenterLeidenThe Netherlands Department of biomedical Data Sciences Leiden University Medical CenterLeidenThe Netherlands Department of General Surgery Haaglanden Medical CenterThe HagueThe Netherlands Department of Intensive Care Leiden University Medical CenterLeidenThe Netherlands Department of Intensive Care Haaglanden Medical CenterThe HagueThe Netherlands

background:This study aimed to identify plasma lipoproteins and small metabolites associated with high risk of malnutrition during intensive care unit(ICU)stay in patients with severe ***:This observational prospective exploratory study was conducted at two level-1 trauma centers in the *** patients(aged≥18 years)who were admitted to the ICU for more than 48 h between July 2018 and April 2022 owing to severe injuries(polytrauma,as defined by Injury Severity Scores of≥16)caused by blunt trauma were eligible for *** least squares discriminant analysis was used to analyze the relationship of 112 lipoprotein-related components and 23 small metabolites with the risk of malnutrition(mod-ified Nutrition risk in Critically Ill score).Malnutrition was diagnosed based on Subjective Global Assessment *** relationship of lipoprotein properties and small metabolite concentrations with malnutrition(during ICU admission)was evaluated using mixed effects logistic ***:Overall,51 patients were ***(very)low-density lipoprotein([V]LDL)(free)cholesterol and phospholipid levels,low particle number,and higher levels of LDL triglycerides were associated with a higher risk of malnutrition(variable importance in projection[VIP]value>1.5).Low levels of most(V)LDL and intermediate-density lipoprotein subfractions and high levels of high-density lipoprotein Apo-A1 were associated with the diagnosis of malnutrition(VIP value>1.5).Increased levels of dimethyl sulfone,trimethylamine N-oxide,creatinine,N,N-dimethylglycine,and pyruvic acid and decreased levels of creatine,methionine,and acetoacetic acid were also indicative of malnutrition(VIP value>1.5).Overall,14 lipoproteins and 1 small metabolite were significantly associated with a high risk of malnutrition during ICU admission(Phowever,the association did not persist after correcting the false discovery rate(P=0.35 for all).Conclusion:Increased triglyceride in sev

关键词： Trauma Severely injured Metabolites Lipoproteins Malnutrition Nutritional status

Storylines of family medicine Ⅲ:core principles—primary care,systems and family

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Family Medicine and Community health 2024年第S3期12卷 23-32页

作者： William b Ventres Leslie A Stone Timothy A Joslin John W Saultz Sommer Aldulaimi Paul r Gordon John C Lane Eric r Lee Jacob Prunuske Limor Gildenblatt Michael h Friedman Colleen T Fogarty Susan h McDaniel Tessa r.h.b.rg Amy Odom Family and Preventive Medicine University of Arkansas for Medical Sciences College of MedicineLittle RockArkansasUSA Family Medicine Oregon Health&Science UniversityPortlandOregonUSA Family and Community Medicine University of Arizona Medical Center–South CampusTucsonArizonaUSA Family and Community Medicine University of Arizona Medical Center–University CampusTucsonArizonaUSA UAMS West regional Campus Family Medicine residency Program Fort SmithArkansasUSA Medical College of Wisconsin–Central Wisconsin Campus WausauWisconsinUSA Family and Community Medicine Medical College of Wisconsin–Central Wisconsin CampusWausauWisconsinUSA Family Medicine Advocate Illinois Masonic Medical CenterChicagoIllinoisUSA Family Medicine Presence Saints Mary and Elizabeth Medical CenterChicagoIllinoisUSA Family Medicine University of Rochester Medical CenterRochesterNew YorkUSA Psychiatry and Family Medicine University of Rochester Medical CenterRochesterNew YorkUSA Family and Community Medicine University of Kansas School of Medicine-WichitaWichitaKansasUSA Sparrow/Michigan State University Family Medicine residency Program LansingMichiganUSA

Storylines of Family Medicine is a 12-part series of thematically linked mini-essays with accompanying illustrations that explore the many dimensions of family medicine,as interpreted by individual family physicians and medical educators in the USA and elsewhere around the ***‘Ⅲ:core principles—primary care,systems,and family’,authors address the following themes:‘Continuity of care—building therapeutic relationships over time’,‘Comprehensiveness—combining breadth and depth of scope’,‘Coordination of care—managing multiple realities’,‘Access to care—intersectional,systemic,and personal’,‘Systems theory—a core value in patient-centered care’,‘Family-oriented practice—supporting patients’health and well-being’,‘Family physician as family member’and‘Family in the exam room’.May readers develop new understandings from these essays.

关键词： individual Storyline principles

薄片形软磁材料b-h曲线无损检测新方法研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国电机工程学报 1999年第1期19卷 67-70,74页

作者：钱克猷杨仕友浙江大学电机工程系

借助于函数逼近、超定方程数值计算、电磁场数值分析和微机测量技术，提出了薄片形软磁材料磁特性无损检测的新方法。计算机仿真结果证实了该方法的可行性和正确性。

关键词：软磁材料磁特性无损检测 b-h曲线

维普期刊数据库

SArS-CoV-2 variants are associated with different clinical courses in children with MIS-C

在线全文

学校读者我要写书评

暂无评论

World Journal of Pediatrics 2024年第2期20卷 143-152页

作者： Andres F.Moreno rojas Emelia bainto helen harvey Adriana h.Tremoulet Jane C.burns Kirsten b.Dummer Department of Pediatrics Division of Pediatric CardiologyUniversity of California San Diegoand Rady Children’s Hospital3020 Children’s Way MC 5004San DiegoCA 92123USA Kawasaki Disease research Center La JollaCAUSA Department of Pediatrics Division of Pediatric Critical CareUniversity of California San Diegoand Rady Children’s HospitalSan DiegoCAUSA Department of Pediatrics University of California San Diegoand Rady Children’s HospitalSan DiegoCAUSA

background recent infection with SArS‑CoV-2 in children has been associated with multisystem inflammatory syndrome in children(MIS-C).SArS‑CoV-2 has undergone different *** publications exist about specific variants and their correlation with the severity of *** This was a single-center,retrospective study including all patients admitted with MIS-C at rady Children’s hospital-San Diego between May 2020 and March *** epidemiologic data,including viral genomic information,were obtained from public ***,clinical presentation,laboratory values,and outcomes were obtained from electronic medical *** The analysis included 104 pediatric *** MIS-C waves were *** variants in San Diego during the first wave included clades 20A to *** the second wave,there were variants from clades 20A to C,20G,21C(Epsilon),20I(Alpha),and 20J(Gamma).The third wave had Delta strains(clades 21A,21I,and 21J),and the fourth had Omicron variants(clades 21K,21L,and 22C).MIS-C presented with similar symptoms and laboratory findings across all *** patients were admitted to the pediatric intensive care unit(PICU)(74%)and required inotropic support(63%)during the second *** of the patients required mechanical circulatory support,and only two required invasive ventilatory *** was no *** The various strains of SArS-CoV-2 triggered MIS-C with differing severities,with the second wave having a more severe clinical *** the differences in disease severity across variants were due to changes in the virus or other factors remains unknown.

关键词： Complications COVID-19 MIS-C SArS-CoV-2 variants

Scalable orthogonal delay-division multiplexed OEO artificial neural network trained for TI-ADC equalization

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Photonics research 2024年第1期12卷 85-105页

作者： ANDrEA ZAZZI ArKA DIPTA DAS LUKAS hüSSEN rENATO NEGrA JErEMY WITZENS Institute of Integrated Photonics RWTH Aachen University52074 AachenGermany Chair of high-Frequency Electronics RWTH Aachen University52074 AachenGermany

We propose a new signaling scheme for on-chip optical-electrical-optical artificial neural networks that utilizes orthogonal delay-division multiplexing and pilot-tone-based self-homodyne *** scheme offers a more efficient scaling of the optical power budget with increasing network *** simulations,based on220 nm silicon-on-insulator silicon photonics technology,suggest that the network can support 31×31 neurons,with 961 links and freely programmable weights,using a single 500 m W optical comb and a signal-to-noise ratio of 21.3 d b per ***,it features a low sensitivity to temperature fluctuations,ensuring that it can be operated outside of a laboratory *** demonstrate the network’s effectiveness in nonlinear equalization tasks by training it to equalize a time-interleaved analog-to-digital converter(ADC)architecture,achieving an effective number of bits over 4 over the entire 75 Ghz ADC *** anticipate that this network architecture will enable broadband and low latency nonlinear signal processing in practical settings such as ultra-broadband data converters and real-time control systems.

关键词： network delay artificial

维普期刊数据库