检索结果-南通市图书馆

photoluminescence,structural and antibacterial properties of co-dopedβ-ca_(3)(pO_(4))_(2)-type phosphates ca_(8)cuRE(pO_(4))_(7)(RE=Eu-Er)

引用

Journal of Rare Earths 2024年第9期42卷 1658-1668,I0002页

作者： Ivan v.Nikiforov Ekaterina v.Iliin Bogdan I.Lazoryak Sergey M.Aksenov pavel v.Slukin Dina v.deyneko department of chemistry Lomonosov Moscow State University119991MoscowRussia Laboratory of Arctic Mineralogy and Material Sciences Kola Science CentreRussian Academy of Sciences184209ApatityRussia geological Institute Kola Science CentreRussian Academy of Sciences184209ApatityRussia State Scientific center of Applied Microbiology and Biotechnology of Rospotrebnadzor 24 Block A142279ObolenskRussia

Novel ca_(8)cuRE(pO_(4))_(7)where RE^(3+)=Eu^(3+),Tb^(3+),Dy^(3+),Ho^(3+)and Er^(3+)were synthesized by a solid-state method in *** structures of the samples were characterized by powder X-ray diffraction using Rietveld refinement to determine the occupation of crystal *** samples are found to have a centrosymmetric structure with space group R3c,as shown by dielectric *** synthesized ca_(8)cuRE(pO_(4))_(7)samples have multifunctional *** cu^(2+)ions provide antibacterial properties,while the rare earth elements ions exhibit luminescence properties,and theβ-ca_3(pO_(4))_(2)-type host is *** photoluminescence properties of RE^(3+)ions were studied and compared with other simmilar ca_(8)MRE(pO_(4))_(7)phosphates,where M is a divalent *** photoluminescence intensity quenching in terms of energy transfer from RE^(3+)to cu^(2+)is *** bioactive properties were studied in relation to antibacterial activity against *** and *** syntesized ca_(8)cuRE(pO_(4))_(7)samples demonstrate very high and stable inhibition of bacteria *** correlation between crystal structure and properties is *** combining multiple approaches to the directio nal design of such materials,several important properties within a single chemical compound to achieve biovisualization and bioactive properties simultaneously can be combined.

关键词： β-ca_(3)(pO_(4))_(2) Whitlockite-type structure Bioactive phosphates Tcp photoluminescence Rare earths

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Diabetes and obesity:A debate on bariatric interventions and its implications

引用

World Journal of Diabetes 2024年第11期15卷 2157-2161页

作者： Joséc Tatmatsu-Rocha Marcos R Lima da silva college of Medicine Postgraduate Program in Physiotherapy and FunctionalityDepartment of PhysiotherapyFederal University of Ceará-UFCFortaleza 60430-450CearáBrazil

In this editorial,we comment on an article by Tang et al published in the World Journal of *** and diabetes are two pathological situations that are intrinsically *** lifestyle changes nor pharmacological treatments have achieved diabetes *** this perspective,bariatric surgery has been widely used as an approach for weight loss in obese patients and as a strategy to promote metabolic *** main effects of bariatric surgery involve direct action in improving cardiovascular function and endothelial function and reducing insulin resistance,leading to diabetes remission in the short term following *** this context,it has been observed that hormones from the gastrointestinal tract and endothelium play a prominent role in this *** reversing endothelial dysfunction,it is possible to balance pro-inflammatory cytokine production,improving the availability of nitric oxide and inhibiting vascular oxidative ***,it can be considered an efficient anti-inflammatory strategy,alleviating interferon-gamma-mediated adipose tissue *** current challenge must be to unravel the pathophysiological mechanisms and potential targets for treating metabolic diseases.

关键词： Bariatric surgery Diabetes mellitus Oxidative stress Endothelial dysfunction Obesity

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Supramolecular polymerization of Hydrogen-Bonded Trimers in Bulk and Aqueous Medium

引用

ccS chemistry 2024年第6期6卷 1458-1465页

作者： Freek v.de graaf Stef A.H.Jansen Sandra M.c.Schoenmakers Bas van genabeek Marle E.J.vleugels Bart W.L.van den Bersselaar E.W.Meijer ghislaine vantomme Institute for complex Molecular Systems Laboratory of Macromolecular and Organic ChemistryEindhoven University of Technology5600 MBEindhoven School of chemistry and RNA Institute University of New South WalesSydneyNew South Wales 2052

Synthetic molecules that form functional noncovalent assemblies in water have received much attention for their potential applications as *** this work,we introduce a novel water-compatible monomer based on the phthalhydrazide moiety that assembles into hydrogen-bonded trimeric *** bulk,the material exhibits a cylindrical nanostructure in the liquid-crystalline phase at elevated temperatures,morphologically distinct from the crystalline lamellar *** water,these molecules effectively form cylinders in a one-dimensional fashion,yielding fibrous *** formation of these supramolecular polymers follows a cooperative mechanism,as evidenced by denaturation *** trimerized pattern represents a new category of aqueous su pramolecular polymers with future prospects for functional complex molecular systems.

关键词： noncovalent chemistry supramolecular polymers hydrogen bonding cooperativity nanostructure

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

In vivo measurement of NADH fluorescence lifetime in skeletal muscle via -ber-coupled time-correlated single photon counting

引用

Journal of Innovative Optical Health Sciences 2024年第1期17卷 121-134页

作者： Kathryn M.priest Jacob v.Schluns Nathania Nischal colton L.gattis Jeffrey c.Wolchok Timothy J.Muldoon department of Biomedical Engineering University of Arkansas FayettevilleARUSA

Nicotinamide adenine dinucleotide(NADH)is a cofactor that serves to shuttle electrons during metabolic processes such as glycolysis,the tricarboxylic acid cycle,and oxidative phosphorylation(OXpHOS).NADH is autofluorescent,and itsfluorescence lifetime can be used to infer metabolic dynamics in living ***-coupled time-correlated single photon counting(TcSpc)equipped with an implantable needle probe can be used to measure NADH lifetime in vivo,enabling investigation of changing metabolic demand during muscle contraction or tissue *** study illustrates a proof of concept for point-based,minimally-invasive NADHfluorescence lifetime measurement in *** muscle loss(vML)injuries were created in the left tibialis anterior(TA)muscle of male Sprague Dawley *** lifetime measurements were collected before,during,and after a 30 s tetanic contraction in the injured and uninjured TA muscles,which was subsequently-t to a biexponential decay model to yield a metric of NADH utilization(cytoplasmic vs protein-bound NADH,the A11/A22 ratio).On average,this ratio was higher during and after contraction in uninjured muscle compared to muscle at rest,suggesting higher levels of free NADH in contracting and recovering muscle,indicating increased rates of *** injured muscle,this ratio was higher than uninjured muscle overall but decreased over time,which is consistent with current knowledge of inflammatory response to injury,suggesting tissue regeneration has *** data suggest that-ber-coupled TcSpc has the potential to measure changes in NADH binding in vivo in a minimally invasive manner that requires further investigation.

关键词： glycolysis oxidative phosphorylation energy metabolism volumetric muscle loss

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

In situ digital testing method for quality assessment of soft soil improvement with polyurethane

引用

Journal of Rock Mechanics and geotechnical Engineering 2024年第5期16卷 1732-1748页

作者： X.F.Wang c.J.Wang W.v.Yue Z.J.Zhang Z.Q.Yue department of civil Engineering China University of Geosciences (Beijing)BeijingChina department of Water Science and Engineering Zhengzhou UniversityZhengzhouChina department of geotechnical Engineering Tongji UniversityShanghaiChina department of civil Engineering The University of Hong KongChina

This study purposes an in situ testing method on quality assessment of soil *** drilling data includes the spatial distribution and in situ strength of untreated and treated soil along three different drillholes measured by on-site drilling monitoring *** factual drilling data can characterize the degree of soil improvement by penetration injection with permeable *** from on-site drilling monitoring shows that the linear zones represent constant drilling speeds shown in the plot of drill bit advancement *** drilling time,which indicates the spatial distributions of soil *** soil profile at the study site is composed of four layers,which includes fill,untreated silty clay,treated silty clay,and mucky *** results of soil profile are verified by the parallel site *** constant drilling speeds profile the coring-resistant strength of drilled *** comparing with the untreated silty clay,the constant drilling speeds of the treated silty clay have been decreased by 13.0-62.8%.Two drilling-speed-based indices of 61.2%and 65.6%are proposed to assess the decreased average drilling speed and the increased in situ strength of treated silty *** tests,*** compressive strength(UcS)test,have been performed with core sample to investigate and characterize in situ strength by comparing that with drilling *** show that the average predicted strengths of treated silty clay are 2.4-6.9 times higher than the average measured strength of untreated silty *** UcS-based indices of 374.5%and 344.2%verified the quality assessment(QA)results by this new in situ *** method provides a cost-effective tool for quality assessment of soil improvement by utilizing the digital drilling data.

关键词： Drilling process monitoring system Hydraulic rotary drilling process constant drilling speed Soil improvement Quality assessment

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Enhancing Wildlife Monitoring Through Infrared Imaging: A deep Learning Approach for Improved Animal Region Segmentation and Species Identification

引用

Journal of Harbin Institute of Technology(New series) 2024年

作者： v Janani c Shanthi department of computer Science， School of computing Sciences， vels Institute of Science Technology and Advanced Studies

Infrared imaging has proven to be a powerful tool in various fields， with particular significance in wildlife monitoring. In this paper， we present an extension of our previous research， focusing on advancing the segmentation of animal regions in enhanced infrared images and expanding the scope to include species identification. Our proposed methodology builds upon the success of the R-cNN (Region-based convolutional Neural Network) object detection to improve the accuracy and robustness of animal region segmentation， while simultaneously extending our model’s capabilities to identify and classify the species within those regions. By fine-tuning the R-cNN model on a larger dataset that includes annotated infrared images and species labels， we enhance its capacity to not only accurately segment animal regions but also classify them into specific species categories. To assess the performance of our extended model， we employ a comprehensive set of evaluation metrics， including pixel-based metrics like Intersection over Union (IoU)， as well as species classification accuracy. Our results demonstrate significant improvements in both region segmentation accuracy and species identification compared to our previous work and existing methods. This research showcases the potential of deep learning techniques， combined with transfer learning， to advance wildlife monitoring applications using infrared imaging.

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Isochrone Fitting of galactic globular clusters—Ⅵ.High-latitude clusters Ngc 5024 (M53),Ngc 5053,Ngc 5272 (M3),Ngc 5466,and Ngc7099 (M30)

引用

Research in Astronomy and Astrophysics 2024年第6期24卷 170-190页

作者： g.A.gontcharov S.S.Savchenko A.A.Marchuk c.J.Bonatto O.S.Ryutina M.Yu.Khovritchev v.B.Il'in A.v.Mosenkov D.M.poliakov A.A.Smirnov central(pulkovo)Astronomical Observatory Russian Academy of SciencesPulkovskoye chaussee 65/1St.Petersburg 196140Russia Saint petersburg State University Universitetskij pr.28St.Petersburg 198504Russia Special Astrophysical Observatory Russian Academy of Sciences369167 Nizhnij ArkhyzRussia departamento de Astronomia Instituto de FísicaUFRGSAv.Bento Gonçalves9500Porto AlegreRSBrazil Saint petersburg University of Aerospace Instrumentation Bol.Morskaya ul.67ASt.Petersburg 190000Russia department of physics and Astronomy Brigham Young UniversityN283 ESCProvoUT 84602USA

We fit various color–magnitude diagrams(cMDs) of the high-latitude galactic globular clusters Ngc 5024(M53),Ngc 5053,Ngc 5272(M3),Ngc 5466,and Ngc 7099(M30) by isochrones from the Dartmouth Stellar Evolution Database and Bag of Stellar Tracks and Isochrones for α–enrichment [α/Fe] = +*** the cMDs,we use data sets from Hubble Space Telescope,gaia,and other sources utilizing,at least,25 photometric filters for each *** obtain the following characteristics with their statistical uncertainties for Ngc 5024,Ngc 5053,Ngc 5272,Ngc 5466,and Ngc 7099,respectively:metallicities [Fe/H] =-1.93 ± 0.02,-2.08 ± 0.03,-1.60 ± 0.02,-1.95 ± 0.02,and-2.07 ± 0.04 dex with their systematic uncertainty 0.1 dex;ages 13.00 ± 0.11,12.70 ± 0.11,11.63 ± 0.07,12.15 ± 0.11,and 12.80 ± 0.17 gyr with their systematic uncertainty 0.8 gyr;distances(systematic uncertainty added) 18.22 ± 0.06 ± 0.60,16.99 ± 0.06 ± 0.56,10.08 ± 0.04 ± 0.33,15.59 ±0.03 ± 0.51,and 8.29 ± 0.03 ± 0.27 kpc;reddenings E(B-v) = 0.023 ± 0.004,0.017 ± 0.004,0.023 ± 0.004,0.023 ± 0.003,and 0.045 ± 0.002 mag with their systematic uncertainty 0.01 mag;extinctions Av= 0.08 ± 0.01,0.06 ± 0.01,0.08 ± 0.01,0.08 ± 0.01,and 0.16 ± 0.01 mag with their systematic uncertainty 0.03 mag,which suggest the total galactic extinction Av= 0.08 across the whole galactic dust to extragalactic objects at the North galactic *** horizontal branch morphology difference of these clusters is explained by their different metallicity,age,mass-loss efficiency,and loss of low-mass members in the evolution of the core-collapse cluster Ngc 7099 and loose clusters Ngc 5053 and Ngc 5466.

关键词： (stars:)Hertzsprung Russell and c-M diagrams (ISM:)dust extinction (galaxy:)globular clusters:general (galaxy:)globular clusters:individual(Ngc 5024,Ngc 5053,Ngc 5272,Ngc 5466,Ngc7099)

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Rifaximin on epigenetics and autophagy in animal model of hepatocellular carcinoma secondary to metabolic-dysfunction associated steatotic liver disease

引用

World Journal of Hepatology 2024年第1期16卷 75-90页

作者： Matheus Truccolo Michalczuk Larisse Longo Melina Belén Keingeski Bruno de Souza Basso gabriel Tayguara Silveira guerreiro Jessica T Ferrari JoséEduardo vargas cláudia p Oliveira carolina Uribe-cruz carlos Thadeu Schmidt cerski Eduardo Filippi-chiela Mário ReisÁlvares-da-silva Division of gastroenterology Hospital de Clínicas de Porto AlegrePorto Alegre 90035-903Rio Grande do SulBrazil graduate program in gastroenterology and Hepatology Universidade Federal do Rio Grande do SulPorto Alegre 90035-003Rio Grande do SulBrazil Experimental Laboratory of Hepatology and gastroenterology Hospital de Clínicas de Porto AlegrePorto Alegre 90035-903Rio Grande do SulBrazil Laboratory of Inflammatory and Neoplastic cells Universidade Federal do ParanáParaná81530900Brazil department of gastroenterology(LIM07) Faculdade de Medicina da Universidade de São PauloSão Paulo 01246903Brazil Facultad de ciencias de la Salud Universidad Católica de las MisionesPosadasMisiones 3300Argentina Unit of Surgical pathology Hospital de Clinicas de Porto AlegrePorto Alegre 90035-903Rio Grande do SulBrazil center of Biotechnology Universidade Federal do Rio Grande do SulPorto Alegre 90035-003Rio Grande do SulBrazil department of Morphological Sciences Universidade Federal do Rio Grande do SulPorto Alegre 90.050-170Rio Grande do SulBrazil conselho Nacional de desenvolvimento científico e Tecnológico(cNpq) Conselho Nacional de Desenvolvimento Científico e Tecnológico(CNPq)ResearcherBrasília 71.605-001Brazil

BAcKgROUND prevalence of hepatocellular carcinoma(Hcc)is increasing,especially in patients with metabolic dysfunctionassociated steatotic liver disease(MASLD).AIM To investigate rifaximin(RIF)effects on epigenetic/autophagy markers in *** Adult Sprague-Dawley rats were randomly assigned(n=8,each)and treated from 5-16 wk:control[standard diet,water plus gavage with vehicle(veh)],Hcc[high-fat choline deficient diet(HFcD),diethylnitrosamine(deN)in drinking water and veh gavage],and RIF[HFcD,deN and RIF(50 mg/kg/d)gavage].gene expression of epigenetic/autophagy markers and circulating miRNAs were *** All Hcc and RIF animals developed metabolic-dysfunction associated steatohepatitis fibrosis,and cirrhosis,but three RIF-group did not develop *** animals who developed Hcc with those who did not,miR-122,miR-34a,tubulin alpha-1c(Tuba-1c),metalloproteinases-2(Mmp2),and metalloproteinases-9(Mmp9)were significantly higher in the *** opposite occurred with Becn1,coactivator associated arginine methyltransferase-1(carm1),enhancer of zeste homolog-2(Ezh2),autophagy-related factor Lc3A/B(Map1 Lc3b),and p62/sequestosome-1(p62/SQSTM1)-*** with controls,Map1 Lc3b,Becn1 and Ezh2 were lower in Hcc and RIF-groups(pcarm1 was lower in Hcc compared to RIF(ppatic expression of Mmp9 was higher in Hcc in relation to the control;the opposite was observed for p62/Sqstm1(ppression of p62/SQSTM1 protein was lower in the RIF-group compared to the control(p=0.024).There was no difference among groups for Tuba-1c,Aldolase-B,alpha-fetoprotein,and Mmp2(p>0.05).miR-122 was higher in Hcc,and miR-34a in RIF compared to controls(pcc compared to RIF,and the inverse was observed for miR-224(pce among groups regarding miR-33a,miR-143,miR-155,miR-375 and miR-21(p>0.05).cONcLUSION RIF might have a possible beneficial effect on preventing/delaying liver carcinogenesis throu

关键词： Animal model Autophagy Epigenetic Hepatocellular carcinoma Metabolic dysfunction-associated steatotic liver disease Rifaximin

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

determining the checkpoint of Transition from Thin to Thick periodontal phenotypes in the Maxillary and Mandibular Anterior Regions of South Indian population

引用

Journal of Forensic Science and Medicine 2024年第1期10卷 55-61页

作者： Mohan Kumar pasupuleti Rasagna chowdary g gautami Spenmetsa vivek Bypalli Ramesh S.v.Konathala Sruthima N.v.S.gottumukkala department of periodontics and Implantology Vishnu Dental CollegeBhimavaramAndhra PradeshIndia2Vishnu Dental CollegeBhimavaramAndhra PradeshIndia

Aim:The aim of this study was to compare and investigate the tissue thickness at the maxillary and mandibular central incisors utilizing the probe visibility method and traditional way of measuring gingival thickness(gT)by endodontic ***:In 200 selected patients,the gT was measured at both the maxillary and mandibular anterior using an endodontic file after local infiltration at the mid-distance from the gingival margin to the mucogingival *** checkpoint of transition from thin to thick periodontal phenotype was determined by probe visibility method in the following age groups:group A:21-30 years;group B:31-40 years;group c:41-50 years;and group D:51-60 ***:gT varied from 0.3 to 1.9 *** translucency was observed up to the thickness of 0.7 *** 0.8 mm of gT,there was no probe ***:According to the present research,the gingiva appears transparent up to a thickness of around 0.7 *** checkpoint of transition between thin and thick periodontal phenotypes at both the maxillary and mandibular anterior was associated with a gT of 0.8 mm.

关键词： gingiva periodontal phenotype probe visibility

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advancements in Fixed point Theorems for α-geraghty contractions in complete Metric Space

引用

Journal of Mathematical Research with Applications 2024年第5期44卷 697-710页

作者： v.c.BORKAR Mohammed M.A.TALEB Saeed A.A.AL-SALEHI School of Mathematical at Yeshwant Mahavidyalaya Swami Ramanand Teerth Marathwada University School of Mathematical at Science college Swami Ramanand Teerth Marathwada University department of Mathematics Hodeidah University department of Mathematics Aden University

This article improves and advances the results achieved by vishal and Naveen, leveraging the use of Lebesgue integrable functions. going beyond, we investigate fixed point theorems associated with a concept introduced by Ovidiu popescu. Our research not only bolsters the theoretical framework but also unveils practical applications in the domain of Lebesgue integrals as in Example 3.6. Furthermore, our contribution enhances the understanding of fixed point theorems in metric spaces and introduces novel perspectives in the study of generalized α-geraghty contractive mappings on Lebesgue integrals.

关键词： fixed point theorems contractive mappings α-geraghty contractions complete metric spaces Lebesgue integrals α-admissible α-orbital α-orbital attractive

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：