检索结果-南通市图书馆

Robust and conductive hydrogel based on mussel adhesive chemistry for remote monitoring of body signals

Friction 2022年第1期10卷 80-93页

作者： Weijun LI Hao LIU Yuanyuan MI Miaoran ZHANG Jinmiao SHI Ming ZHAO melvin a.ramos Travis Shihao HU Jianxiong LI Meng XU Quan XU State Key Laboratory of Heavy Oil Processing.Beijing Key Laboratory of Biogas Upgrading Utilization Harvard SEAS-C UPB Joint L aboratory on Petroleum ScienceChina University of PetroleumBeijing 102249China Department of Mechanical Engineering.California State University Los AngelesCA 90032USA Department of Orthopedics General Hospital of Chinese People's Liberat ion Army Beijing 100853China

There is a high demand for hydrogels with multifunctional performance(a combination of adhesive,mechanical,and electrical properties)in biological,tissue engineering,robotics,and smart device ***,a majority of existing hydrogels are relatively rigid and brittle,with limited stretchability;this hinders their application in the emerging field of flexible *** this study,cheap and abundant potato residues were used with polyacrylamide(PAM)to fabricate a multifunctional hydrogel,and chitosan was used for the design of a three-dimentional(3D)network-structured *** as-prepared hydrogels exhibited excellent stretchability,with an extension exceeding 900%and a recovery degree of over 99%.Due to the combination of physical and chemical cross-linking properties and the introduction of dopamine,the designed hydrogel exhibits a remarkable self-healing ability(80%mechanical recovery in 2 h),high tensile strength(0.75 MPa),and ultra-stretchability(900%).The resultant products offer superior properties compared to those of previously reported tough and self-healing hydrogels for wound *** and potato residues were used as scaffold materials for the hydrogels with excellent mechanical *** addition,in vitro experiments show that these hydrogels feature excellent antibacterial properties,effectively hindering the reproduction of ***,the ternary hydrogel can act as a strain sensor with high sensitivity and a gauge factor of *** proposed strategy is expected to serve as a reference for the development of green and recyclable conductive polymers to fabricate *** proposed hydrogel can also act as a suitable strain sensor for bio-friendly devices such as smart wearable electronic devices and/or for health monitoring.

关键词： properties hydrogel conductive

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

Geochemistry and mineralogy of beach sediments in the northern Gulf of Mexico,Tamaulipas state,Mexico:implication for provenance

引用

Journal of Palaeogeography 2024年第3期13卷 375-400页

作者： Mayank Shukla Sanjeet K.Verma Mayla a.ramos-Vázquez John S.Armstrong-Altrin Karla R.Hernández-Martínez Sumit Mishra Vivek P.Malviya Héctor Hernández-Mendoza Posgrado de la Division de Geociencias Aplicadas Instituto Potosino de Investigacion Científica y Tecnologica(IPICYT)Camino a la Presa San José2055San Luis Potosí78216Mexico Division de Geociencias Aplicadas Instituto Potosino de Investigación Científica y Tecnologica(IPICYT)Camino a la Presa San Jose 2055San Luis Potosí78216Mexico Universidad Nacional Autonoma de México Instituto de Ciencias del Mar y LimnologíaUnidad de ProcesosOceanicos y CosterosCiudad UniversitariaCiudad de México 04510Mexico Department of Marine Sciences Bharathidasan UniversityTiruchirappalli620024Tamil NaduIndia Instituto de Geociencias Universidad Nacional Autonoma de MéxicoBoulevard Juriquilla 300176230JuriquillaQueretaroMexico Department of Applied Geology Dr.Harisingh Gour Central UniversitySagar470002Madhya PradeshIndia Instituto de Investigacion de Zonas Desérticas Universidad Autònoma de San Luis PotosíAltair 200CP 78377San LuisS.L.P.Mexico Universidad del Centro de Mexico Capitán Caldera 75CP 78250San LuisS.L.P.Mexico

Geochemical and mineralogical studies were performed in the La Pesca(LP)and Tesoro Altamira(TA)beach sediments,located in the Tamaulipas state,northern Gulf of *** main aim of this study is to infer the weathering history and provenance and to discriminate the tectonic environment of the beach *** sediments are composed of quartz with small amounts of accessory minerals such as plagioclase,calcite,orthoclase,microcline,and *** beach sediments are classified as fine-grained and very well sorted,however LP has coarse skewed and leptokurtic sediments,whereas TA has fine-skewed and very leptokurtic *** chemical index of weathering(CIW’)indicates intense weathering in the source *** quartz grain microtextures in the LP and TA are classified into mechanical,chemical,and mechanical/chemical *** features such as fractures,pits,percussion marks,abrasion fatigue,and V-shaped marks favor high-energy littoral,fluvial,subaqueous-marine,and aeolian *** chemical features indicate solution pits and crystalline overgrowth,which suggests a silica saturated marine *** mechanical/chemical features display adhering particles and elongated depressions suggest formation in a sub-aqueous nearshore marine *** and trace elements-based provenance discrimination diagrams indicate a felsic source derived from the Mesa Central(MC),Sierra Madre Oriental(SMOr)and Oaxaquia *** major and trace element concentrations imply a passive margin setting for the northern Gulf of Mexico,which is consistent with the general geology.

关键词： Beach sediments Geochemistry Mineralogy Provenance Tamaulipas Tectonic setting

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

A novel heterozygous SF1/NR5A1 gene variant causes 46,XY DSD-gonadal dysgenesis with hypergonadotropic hypogonadism without adrenal insufficiency

引用

Genes & Diseases 2024年第4期11卷 128-130页

作者： Luis ramos Department of Reproductive Biology Instituto Nacional de Ciencias Medicas y Nutricion Salvador ZubirdnTlalpanMexico City 14080Mexico

Steroidogenic factor 1(SF1/NR5A1;nuclear receptor subfamily 5 group A member 1)is an essential orphan protein involved in gonadal embryogenesis,sex determination,and reproductive endocrinology.

关键词： insufficiency determination gonadal

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

Genotype-based precision nutrition strategies for the prediction and clinical management of type 2 diabetes mellitus

引用

World Journal of Diabetes 2024年第2期15卷 142-153页

作者： Omar ramos-Lopez Medicine and Psychology School Autonomous University of Baja CaliforniaTijuana 22390Baja CaliforniaMexico

Globally,type 2 diabetes mellitus(T2DM)is one of the most common metabolic disorders.T2DM physiopathology is influenced by complex interrelationships between genetic,metabolic and lifestyle factors(including diet),which differ between populations and geographic *** fact,excessive consumptions of high fat/high sugar foods generally increase the risk of developing T2DM,whereas habitual intakes of plant-based healthy diets usually exert a protective ***,genomic studies have allowed the characterization of sequence DNA variants across the human genome,some of which may affect gene expression and protein functions relevant for glucose *** comprehensive literature review covers the impact of gene-diet interactions on T2DM susceptibility and disease progression,some of which have demonstrated a value as biomarkers of personal responses to certain nutritional ***,novel genotype-based dietary strategies have been developed for improving T2DM control in comparison to general lifestyle ***,progresses in other omics areas(epigenomics,metagenomics,proteomics,and metabolomics)are improving current understanding of genetic insights in T2DM clinical *** more investigation is still needed,the analysis of the genetic make-up may help to decipher new paradigms in the pathophysiology of T2DM as well as offer further opportunities to personalize the screening,prevention,diagnosis,management,and prognosis of T2DM through precision nutrition.

关键词： Type 2 diabetes mellitus Nutrigenetics Single nucleotide polymorphism Genotype Diet Precision nutrition

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

Design multifunctional Mg–Zr coatings regulating Mg alloy bioabsorption

引用

Journal of Magnesium and Alloys 2024年第4期12卷 1461-1478页

作者： Zohra Benzarti Sandesh Itani JoséDavid Castro Sandra Carvalho Ana Sofia.ramos University of Coimbra CEMMPREARISEDepartment of Mechanical EngineeringRua Luís Reis Santos3030-788CoimbraPortugal Laboratory of Multifunctional Materials and Applications(LaMMA) Department of PhysicsFaculty of Sciences of SfaxUniversity of SfaxSoukra Road km 3.5B.P.1171Sfax3000Tunisia

Magnesium(Mg)alloys are widely used for temporary bone implants due to their favorable biodegradability,cytocompatibility,hemocompatibility,and close mechanical properties to ***,rapid degradation and inadequate strength limit their *** overcome this,the direct current magnetron sputtering technique is employed for surface coating in Mg-based alloys using various zirconium(Zr)*** approach presents a promising strategy for simultaneously improving corrosion resistance,maintaining biocompatibility,and enhancing strength without compromising *** leveraging Mg’s inherent biodegradability,it has the potential to minimize the need for secondary surgeries,thereby reducing costs and *** paper is a systematic study aimed at understanding the corrosion mechanisms of Mg–Zr coatings,denoted Mg-xZr(x=0–5 at.%).Zr-doped coatings exhibited columnar growth leading to denser and refined structures with increasing Zr *** analysis confirmed the presence of the Mg(00.2)basal plane,shifting towards higher angles(1.15°)with 5 at.%Zr doping due to lattice parameter changes(i.e.,decrease and increase of“c”and“a”lattice parameters,respectively).Mg–Zr coatings exhibited“liquidphilic”behavior,while Young’s modulus retained a steady value around 80 GPa across all ***,the hardness has significantly improved across all samples’coating,reaching the highest value of(2.2±0.3)GPa for 5 at.%*** testing in simulated body fluid(SBF)at 37℃ revealed a significant enhancement in corrosion resistance for Mg–Zr coatings containing 1.0–3.4 at.%*** with the 5 at.%Zr coating which exhibited a corrosion rate of 32 mm/year,these coatings displayed lower corrosion rates,ranging from 1 to 12 mm/*** synergistic enhancement in mechanical properties and corrosion resistance,achieved with 2.0–3.4 at.%Zr,suggests potential ability for reducing stress shielding and controlled degradation performance,and consequentl

关键词： Mg-Zr coatings Magnetron sputtering Nanoindentation Corrosion resistance Bone implants

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

Gram-negative bacterial diversity and evidence of international clones of multidrug-resistant strains in zoo animals

引用

Integrative Zoology 2024年第3期19卷 417-423页

作者： João Pedro Rueda FURLAN Micaela Santana.ramos Fábio Parra SELLERA Irys Hany Lima GONZALEZ Patrícia Locosque ramos Eliana Guedes STEHLING Department of Clinical Analyses Toxicology and Food ScienceSchool of Pharmaceutical Sciences of Ribeirão PretoUniversity of São PauloRibeirão PretoBrazil Department of Internal Medicine School of Veterinary Medicine and Animal ScienceUniversity of São PauloSão PauloBrazil School of Veterinary Medicine Metropolitan University of SantosSantosBrazil Coordination of Wild Fauna Secretary of EnvironmentInfrastructure and LogisticsSão PauloBrazil

Antimicrobial resistance(AMR)is a growing phenomenon that poses a major public health challenge worldwide(Dhingra et al.2020;Antimicrobial Resistance Collaborators 2022).The selective pressure exerted in clinical settings has contributed to the longlasting successful dissemination of multidrug-resistant(MDR)Gram-negative bacteria in these environments(Chia et al.2020).

关键词： multidrug clinical

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

Hyperparameter optimization of YOLOv8 for smoke and wildfire detection:Implications for agricultural and environmental safety

引用

Artificial Intelligence in Agriculture 2024年第2期12卷 109-126页

作者： Leo ramos Edmundo Casas Eduardo Bendek Cristian Romero Francklin Rivas-Echeverría Kauel Inc. Menlo Park(Silicon Valley)CA 94025USA Computer Vision Center Universitat Autònoma de BarcelonaBellaterra 08193Spain Faculty of Engineering University of DeustoBilbao 48007Spain Jet Propulsion Laboratory NASAPasadenaCA 91109USA

In this study,we extensively evaluated the viability of the state-of-the-art YOLOv8 architecture for object detec-tion tasks,specifically tailored for smoke and wildfire identification with a focus on agricultural and environmen-tal *** available versions of YOLOv8 were initially fine-tuned on a domain-specific dataset that included a variety of scenarios,crucial for comprehensive agricultural ***‘large’version(YOLOv8l)was se-lected for further hyperparameter tuning based on its performance *** model underwent a detailed hyperparameter optimization using the One Factor At a Time(OFAT)methodology,concentrating on key param-eters such as learning rate,batch size,weight decay,epochs,and *** from the OFAT study were used to define search spaces for a subsequent Random Search(RS).The final model derived from RS demon-strated significant improvements over the initial fine-tuned model,increasing overall precision by 1.39%,recall by 1.48%,F1-score by 1.44%,mAP@0.50 by 0.70%,and mAP@0.50:0.95 by 5.09%.We validated the enhanced model's efficacy on a diverse set of real-world images,reflecting various agricultural settings,to confirm its ro-bustness in detecting smoke and *** results underscore the model's reliability and effectiveness in scenar-ios critical to agricultural safety and environmental *** work,representing a significant advancement in the field of fire and smoke detection through machine learning,lays a strong foundation for fu-ture research and solutions aimed at safeguarding agricultural areas and natural environments.

关键词： Agricultural safety Wildfire detection Smoke detection Object detection Computer vision YOL

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

Astrocytes, reactive astrogliosis, and glial scar formation in traumatic brain injury

引用

Neural Regeneration Research 2025年第4期20卷 973-989页

作者： María Belén Cieri Alberto Javier ramos Laboratorio de Neuropatología Molecular IBCN UBA-CONICETFacultad de MedicinaUniversidad de Buenos AiresBuenos AiresArgentina

Traumatic brain injury is a global health crisis,causing significant death and disability *** that follows traumatic brain injury has serious consequences for neuronal survival and cognitive impairments,with astrocytes involved in this *** traumatic brain injury,astrocytes rapidly become reactive,and astrogliosis propagates from the injury core to distant brain *** astroglial proteins are downregulated near the traumatic brain injury core,while pro-inflammatory astroglial genes are *** altered gene expression is considered a pathological remodeling of astrocytes that produces serious consequences for neuronal survival and cognitive *** addition,glial scar formed by reactive astrocytes is initially necessary to limit immune cell infiltration,but in the long term impedes axonal reconnection and functional *** therapeutic strategies for traumatic brain injury are focused on preventing acute ***,cannabinoids,progesterone,beta-blockers,and cerebrolysin demonstrate neuroprotective benefits but most of them have not been studied in the context of *** this review,we discuss the cell signaling pathways activated in reactive astrocytes following traumatic brain injury and we discuss some of the potential new strategies aimed to modulate astroglial responses in traumatic brain injury,especially using cell-targeted strategies with miRNAs or lncRNA,viral vectors,and repurposed drugs.

关键词： astrocyte glial scar innate immunity neuroinflammation stab injury Toll-like receptors

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

Colorectal cancer screening:A review of current knowledge and progress in research

引用

World Journal of Gastrointestinal Oncology 2024年第4期16卷 1119-1133页

作者： Sara.ramos Lopes Claudio Martins Inês Costa Santos Madalena Teixeira Élia Gamito Ana Luisa Alves Department of Gastroenterology Centro Hospitalar de SetúbalSetúbal 2910-446Portugal

Colorectal cancer(CRC)is one of the most prevalent malignancies worldwide,being the third most commonly diagnosed malignancy and the second leading cause of cancer-related deaths *** the progress in screening,early diagnosis,and treatment,approximately 20%-25%of CRC patients still present with metastatic disease at the time of their initial ***,the burden of disease is still expected to increase,especially in individuals younger than 50 years old,among whom early-onset CRC incidence has been *** and early detection are pivotal to improve CRC-related *** is well established that CRC screening not only reduces incidence,but also decreases deaths from *** screening strategies have proven effective in decreasing both CRC incidence and mortality,though variations in efficacy have been reported across the ***,uncertainties persist regarding the optimal screening method,age intervals and ***,adherence to CRC screening remains globally *** recent years,emerging technologies,notably artificial intelligence,and non-invasive biomarkers,have been developed to overcome these ***,controversy exists over the actual impact of some of the new discoveries on CRC-related outcomes and how to effectively integrate them into daily *** this review,we aim to cover the current evidence surrounding CRC *** will further critically assess novel approaches under investigation,in an effort to differentiate promising inno-vations from mere novelties.

关键词： Colorectal cancer Screening Review Oncology Artificial intelligence

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

What Happens in Organizations When Enhancing Organizational Culture Toward Being More Conscious?

引用

Chinese Business Review 2024年第2期23卷 87-93页

作者： Leticia.ramos Garza Tecnologico de Monterrey MonterreyMexico

The purpose of this study is to offer a better comprehension of what happens in organizations when enhancing organizational culture through consciousness by linking the market-oriented ecosystem variables and analyzing their relationship with a conscious *** and methodology:Two questionnaires were used to test the hypotheses,the market-oriented ecosystem 38-item(Yeung&Ulrich,2019),and the conscious organization model 7-item adaptation(Sisoda,2018).Pearson correlations were calculated to measure the strength of the linear relationship among the variables involved in each one of the hypotheses,and coefficient alpha(coefficient𝛼)was used to analyze the reliability,to measure the internal consistency of the *** findings:Context,ecosystem organizational structure,governance,and people ecosystem were positively correlated to a conscious *** originality of this study is based on use of the interaction among the variables of the market-oriented ecosystem model(continuous changing context,ecosystem organizational structure,governance,and people ecosystem)and a conscious organizational ***,the practical implications of having high levels of the market-oriented ecosystem variables predict high level of consciousness in *** variables require careful consideration,a proactive planning process to enhance organizational culture through consciousness.

关键词： conscious organizational culture market-oriented ecosystem organizational change

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

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：