THE Coatings最新文献_第8页

Therapeutic and Ameliorative Effects of Active Compounds of Combretum molle in the Treatment and Relief from Wounds in a Diabetes Mellitus Experimental Model 紫荆分子活性成分对糖尿病实验模型伤口的治疗和缓解作用

THE Coatings Pub Date : 2021-03-11 DOI: 10.3390/COATINGS11030324

R. Z. Hamza, Shaden E. Al-Motaani, Tarek Al-Talhi

{"title":"Therapeutic and Ameliorative Effects of Active Compounds of Combretum molle in the Treatment and Relief from Wounds in a Diabetes Mellitus Experimental Model","authors":"R. Z. Hamza, Shaden E. Al-Motaani, Tarek Al-Talhi","doi":"10.3390/COATINGS11030324","DOIUrl":"https://doi.org/10.3390/COATINGS11030324","url":null,"abstract":"Foot ulcers are one of the leading causes of severe and high mortality in diabetics. It is known that wound healing in diabetics is a very complicated process due to the direct severe effect of diabetes mellitus on blood vessels, causing difficulty in wound healing. Many methods of treatment have recently been employed for novel dressings for the promotion of tissue regeneration and rapid wound closure. Combretum molle is composed of chemical compounds, such as lignin, gallic acid, and ellagic acid. Twenty male rats that were 4 months of age were divided into a I-a diabetic foot ulcer group as the control group and a II-a diabetic group (wound + Combretum molle). This study investigated the antioxidant and excellent healing effects of the extract of Combretum molle in repairing skin damaged by diabetes. This was confirmed by elevated antioxidant enzymes in the animals’ tissues in diabetic rats treated with this extract. The recovery of the alterations in the skin layers led to great improvements, which proved the Combretum molle’s promising capacity for wound healing in diabetics with wounds that mimic diabetic foot ulcers. This treatment can be considered a promising opportunity for patients with severe foot ulcers and may open the door to more discoveries about this plant’s medical capabilities.","PeriodicalId":22482,"journal":{"name":"THE Coatings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73138817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Wear and Friction Characteristics of 65Mn Steel for Spike-Tooth Harrow 刺齿耙用65Mn钢的磨损与摩擦特性

THE Coatings Pub Date : 2021-03-10 DOI: 10.3390/COATINGS11030319

Zhiguo Lu, C. Du, Qingcai Chen, Tian-Ye Niu, Na Wang, Wanli Song

引用次数: 3

Antifungal Hydroxypropyl Methylcellulose (HPMC)-Lipid Composite Edible Coatings and Modified Atmosphere Packaging (MAP) to Reduce Postharvest Decay and Improve Storability of ‘Mollar De Elche’ Pomegranates 抗真菌羟丙基甲基纤维素(HPMC)-脂质复合可食性涂层和改性气调包装(MAP)减少“Mollar De Elche”石榴采后腐烂和提高其储存性

THE Coatings Pub Date : 2021-03-09 DOI: 10.3390/COATINGS11030308

Bruno Di Millo, V. Martínez-Blay, M. Pérez-Gago, M. Argente-Sanchis, Amparo Grimal, E. Baraldi, L. Palou

{"title":"Antifungal Hydroxypropyl Methylcellulose (HPMC)-Lipid Composite Edible Coatings and Modified Atmosphere Packaging (MAP) to Reduce Postharvest Decay and Improve Storability of ‘Mollar De Elche’ Pomegranates","authors":"Bruno Di Millo, V. Martínez-Blay, M. Pérez-Gago, M. Argente-Sanchis, Amparo Grimal, E. Baraldi, L. Palou","doi":"10.3390/COATINGS11030308","DOIUrl":"https://doi.org/10.3390/COATINGS11030308","url":null,"abstract":"Pomegranate exhibits important postharvest quality losses that limit its storage potential, caused mainly by weight loss, chilling injury and fungal diseases. In this work, we evaluated the effect of novel hydroxypropyl methylcellulose (HPMC) edible coatings (ECs) formulated with three different lipids (beeswax (BW), carnauba wax, and glycerol monostearate), as hydrophobic components, and two different GRAS salts (potassium bicarbonate (PBC) and sodium benzoate (SB)), as antifungal ingredients, to control weight loss and natural fungal decay of ‘Mollar de Elche’ pomegranates during storage at 20 °C. Afterwards, selected antifungal ECs and commercial modified atmosphere packaging (MAP) films were assayed alone or in combination to control natural decay and preserve fruit quality of pomegranates stored at 5 °C for 4 months plus 1 week at 20 °C. Results showed that ECs amended with SB reduced pomegranate latent infections caused by Botrytis cinerea and wound diseases caused by Penicillium spp. Moreover, MAP technologies were confirmed as an efficient mean to preserve freshness, prevent fruit shriveling and rind browning, and reduce fungal decay, thus extending storage life of pomegranates. The combination HPMC-BW-SB + MAP was the most promising treatment as it reduced weight loss and decay, without negatively affecting the fruit physicochemical and sensory quality.","PeriodicalId":22482,"journal":{"name":"THE Coatings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87240275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Synthesis and Characterization of CeO2/CuO Nanocomposites for Photocatalytic Degradation of Methylene Blue in Visible Light 可见光下光催化降解亚甲基蓝的CeO2/CuO纳米复合材料的合成与表征

THE Coatings Pub Date : 2021-03-08 DOI: 10.3390/COATINGS11030305

A. Raees, M. Jamal, I. Ahmed, Mika Silanpaa, T. Saad Algarni

{"title":"Synthesis and Characterization of CeO2/CuO Nanocomposites for Photocatalytic Degradation of Methylene Blue in Visible Light","authors":"A. Raees, M. Jamal, I. Ahmed, Mika Silanpaa, T. Saad Algarni","doi":"10.3390/COATINGS11030305","DOIUrl":"https://doi.org/10.3390/COATINGS11030305","url":null,"abstract":"Removal of hazardous organic dyes from polluted water bodies requires the introduction of strong adsorbents and photocatalysts to industrial wastewaters. Herein, photocatalytic CeO2 nanoparticles and CeO2/CuO nanocomposite were synthesized following a co-precipitation method for low cost elution of methylene blue (MB) from water. The crystallinity and surface structure of the as-prepared materials have been analyzed using characterization techniques including X-ray powder diffraction (XRPD), field emission scanning electron microscopy (FE-SEM), energy-dispersive spectroscopy (EDS), ultra-violet visible spectroscopy (UV–Vis), and Fourier-transform infrared spectroscopy (FTIR). The average particle size of both the nano scaled samples were approximately 20–30 nm. The photocatalytic properties of CeO2/CuO were investigated under visible light against methylene blue (MB). The results showed 91% photodegradation of MB organic pollutant in 3 h as monitored by UV–Vis spectroscopy. Absorbance peaks appeared at around 670 nm corresponding to degradation of MB. Such output displayed the effectiveness of Ce nanocomposites for environmental benefits. Hence, CeO2/CuO nanocomposite could be useful for treatment of industrial wastewaters by removing hazardous MB dye.","PeriodicalId":22482,"journal":{"name":"THE Coatings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79777419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 26

Film Growth of Tetragonal SnO2 on Glass Substrate by Dip-Coating Technique for Ethanol Sensing Applications 用浸涂技术在玻璃基板上生长方形SnO2薄膜用于乙醇传感

THE Coatings Pub Date : 2021-03-06 DOI: 10.3390/COATINGS11030303

Juan G. Sotelo, J. Bonilla-Rios, Fernando Garcia-Escobar, J. L. Gordillo

{"title":"Film Growth of Tetragonal SnO2 on Glass Substrate by Dip-Coating Technique for Ethanol Sensing Applications","authors":"Juan G. Sotelo, J. Bonilla-Rios, Fernando Garcia-Escobar, J. L. Gordillo","doi":"10.3390/COATINGS11030303","DOIUrl":"https://doi.org/10.3390/COATINGS11030303","url":null,"abstract":"A thin film sensor based on tetragonal SnO2 nanoparticles was fabricated by combining the sol–gel method and a dip-coating technique on a cylindrical glass substrate. The sensing material was produced through a cycling annealing process at 400 and 600 °C, using tin chloride (IV) pentahydrate as a precursor in polyethylene glycol (PEG) solution as a surfactant. Materials were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD), revealing tetragonal phase formation with no impurities. The sensor′s assembly was done with low-cost materials such as Cu electrodes, Cu-Ni tube pins, and glass-reinforced epoxy laminate as the base material. For signal variation, an adequate voltage divider circuit was used to detect ethanol′s presence on the surface of the sensor. The fabricated sensor response to gaseous ethanol at its operating temperature at ambient pressure is comparable to that of a commercial sensor, with the advantage of detecting ethanol at lower temperatures. The sensor response (S = Ra/Rg) to 40 ppm of ethanol at 120 °C was 7.21. A reported mathematical model was used to fit the data with good results.","PeriodicalId":22482,"journal":{"name":"THE Coatings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89012687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Characterization and Identification of Varnishes on Copper Alloys by Means of UV Imaging and FTIR 用紫外成像和红外光谱对铜合金表面清漆进行表征和鉴定

THE Coatings Pub Date : 2021-03-05 DOI: 10.3390/COATINGS11030298

Miriam Truffa Giachet, J. Schröter, L. Brambilla

{"title":"Characterization and Identification of Varnishes on Copper Alloys by Means of UV Imaging and FTIR","authors":"Miriam Truffa Giachet, J. Schröter, L. Brambilla","doi":"10.3390/COATINGS11030298","DOIUrl":"https://doi.org/10.3390/COATINGS11030298","url":null,"abstract":"The application of varnishes on the surface of metal objects has been a very common practice since antiquity, both for protective and aesthetic purposes. One specific case concerns the use of tinted varnishes on copper alloys in order to mimic gilding. This practice, especially flourishing in the 19th century for scientific instruments, decorative objects, and liturgical items, results in large museum collections of varnished copper alloys that need to be preserved. One of the main challenges for conservators and restorers deals with the identification of the varnishes through non-invasive and affordable analytical techniques. We hereby present the experimental methodology developed in the framework of the LacCA and VERILOR projects at the Haute Ecole ARC of Neuchâtel for the identification of gold varnishes on brass. After extensive documentary research and analytical campaigns on varnished museum objects, various historic shellac-based varnishes were created and applied by different methods on a range of brass substrates with different finishes. The samples were then characterized by UV imaging and infrared spectroscopy before and after artificial ageing. The comparative study of these two techniques was performed for different thicknesses of the same varnish and for different shellac grades in order to implement an identification methodology based on simple non-invasive examination and analytical tools, which are accessible to conservators.","PeriodicalId":22482,"journal":{"name":"THE Coatings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83220940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Software (GUI/APP) for Developing AI-Based Models Capable of Predicting Load-Displacement Curve and AFM Image during Nanoindentation 开发基于人工智能的模型(GUI/APP)，能够预测纳米压痕过程中的载荷-位移曲线和AFM图像

THE Coatings Pub Date : 2021-03-05 DOI: 10.3390/COATINGS11030299

R. Jha, A. Agarwal

{"title":"Software (GUI/APP) for Developing AI-Based Models Capable of Predicting Load-Displacement Curve and AFM Image during Nanoindentation","authors":"R. Jha, A. Agarwal","doi":"10.3390/COATINGS11030299","DOIUrl":"https://doi.org/10.3390/COATINGS11030299","url":null,"abstract":"During nanoindentation tests, the load-displacement curve is used for estimating mechanical properties, while an indent image obtained through atomic force microscopy (AFM) is used for studying deformation of a material. We present a computational platform for developing artificial intelligence-based models for predicting indentation depth (load-displacement curve) and AFM image as a function of test parameters like maximum applied load, loading rate, and holding time. A user can directly use machine generated data in text (.txt) and hierarchical data format (HDF, hdf) format for developing the AI-based models for indentation depth and AFM image, respectively. The software was tested on three different coatings/materials for indentation depth: heat-treated (HT) sample of cold sprayed aluminum-based bulk metallic glass (Al-BMG) coating, carbon nanotube reinforced aluminum composite (Al-5CNT) coating, and spark-plasma-sintered hydroxyapatite (SPS HA) sample. For AFM imaging, a heat-treated (HT) sample of cold sprayed aluminum-based bulk metallic glass (Al-BMG) coating was considered. Correlation or R-values are close to 1 for all the models developed in this work. Predicted load-displacement curve and AFM image are in good agreement with the experimental findings. Our approach will be helpful in virtual simulation of load-displacement curves and AFM indent images for a large number of new test parameters, thus significantly reducing the number of indents needed for characterizing/analyzing a material.","PeriodicalId":22482,"journal":{"name":"THE Coatings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80697240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multifunctional Nanocrystalline Cu–Ti Thin Films Enhance Survival and Induce Proliferation of Mouse Fibroblasts In Vitro 多功能纳米晶Cu-Ti薄膜提高小鼠成纤维细胞体外存活和诱导增殖

THE Coatings Pub Date : 2021-03-05 DOI: 10.3390/COATINGS11030300

Małgorzata Osękowska, D. Wojcieszak, D. Kaczmarek, M. Mazur, Agata Obstarczyk, B. Szponar

引用次数: 2

Preparation of Red Phosphor Sr2Si5N8: Eu2+ by Pellet Method and Its Optical Characteristics 球团法制备Sr2Si5N8: Eu2+红色荧光粉及其光学特性

THE Coatings Pub Date : 2021-02-28 DOI: 10.3390/COATINGS11030283

Yu-Bing Lan, Dong Wang, Dongliang Xie, Jun Tan, Bowen Li, Mei Zhang, Yan Chen

引用次数: 4

Influences of Growth Species and Inclusions on the Current–Voltage Behavior of Plasma Electrolytic Oxidation: A Review 生长种类和夹杂物对等离子体电解氧化电流-电压行为的影响

THE Coatings Pub Date : 2021-02-25 DOI: 10.3390/COATINGS11030270

D. Tsai, C. Chou

{"title":"Influences of Growth Species and Inclusions on the Current–Voltage Behavior of Plasma Electrolytic Oxidation: A Review","authors":"D. Tsai, C. Chou","doi":"10.3390/COATINGS11030270","DOIUrl":"https://doi.org/10.3390/COATINGS11030270","url":null,"abstract":"Plasma electrolytic oxidation (PEO) has attracted increasing attention since the transportation industry adopts more lightweight metal components and requires an improved version of anodizing for surface protection. In response to the demand, researchers enrich the technical connotation of PEO through diversifying the growth paths and adopting new precursors. Foreign electrolyte additives, involving ceramic and polymeric particles, organic dye emulsions, are incorporated to accomplish various goals. On the other hand, significant progress has been made on comprehension of softening sparks; denoting the adverse trend of growing discharge intensity can be re-routed by involving cathodic current. I–V response shows the cathodic pulse current not only cools down the ensuing anodic pulse, but also twists the coating conductivity, and the residuals of twists accumulate over a long time frame, plausibly through oxide protonation. Thus, the cathodic current provides a tool to control the discharge intensity via integration of the coating conductivity deviations. So far, these cathodic current studies have been performed in the electrolytes of KOH and Na2SiO3. When exotic additives are included, for example Cr2O3, the cathodic current effect is also shifted, as manifested in remarkable changes in its current–voltage (I–V) behavior. We anticipate the future study on cathodic current influences of inclusion shall lead to a precise control of micro arc.","PeriodicalId":22482,"journal":{"name":"THE Coatings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81742528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11