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Microstructure of <em>Annona muricata</em>L. Leaves Extract Microcapsules Linked to Physical and Chemical Characteristics

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Journal of Encapsulation and Adsorption Sciences 2018年第3期8卷 178-193页

作者： Oscar Jordán-Suárez Patricia Glorio-Paulet Leslie Vidal Facultad de Ciencia de Alimentos Universidad Le Cordon Bleu Lima Perú Departamento de Ingeniería de Alimentos y Productos Agropecuarios Universidad Nacional Agraria La Molina Lima Perú Departamento de Agroindustrias Universidad de Concepción Chillán Chile

Microstructure is closely related to techno-functional properties in microencapsulated powders intended to protect bioactive compounds. Soursop leaves provide phytochemicals that need to be protected to ensure their functionality. This investigation aimed to study the microstructure of microcapsules containing soursop leaves extract and its linkage with physical and chemical characteristics of the resulting powder. Microcapsules were prepared by spray drying using gum Arabic and maltodextrin as encapsulating agents at 5 and 10%. Powders were characterized by scanning electron microscopy, particle size analysis, solubility, infrared spectroscopy and encapsulation efficiency. Microphotographs showed spherical shape particles ranging from 0.25 to 13.87 μm, where the particles morphology depended on the concentration and the type of the encapsulant used. At higher concentration of encapsulant, there was an increase in the sphericity, integrity, size, and surface smoothness of particles. This relationship was inverse for solubility in treatments with gum Arabic. The extract encapsulation was confirmed by Fourier Transform infrared spectroscopy and encapsulation efficiency index, revealing that the treatment with maltodextrin at 10% showed a better capability for entrapment (72.12%). The results evidence that microstructure of microcapsules is closely linked to the type and concentration of encapsulant, which in turn determine the physical and chemical characteristics of powders intended for instant drinks solubility and entrapping soursop bioactive compounds.

关键词： Soursop Microencapsulation Microstructure Spray Drying Encapsulants

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Transparent conductive stannic oxide coatings employing an ultrasonic spray pyrolysis technique:The relevance of the molarity content in the aerosol solution for improvem.nt the electrical properties

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Journal of Semiconductors 2022年第2期43卷 66-73页

作者： L.Castañeda Sección de Estudios de Posgrado e Investigación de la Escuela Superior de Medicina Instituto Politécnico NacionalPlan de San Luis y Díaz Mirón s/nCasco de Santo TomásCiudad de MéxicoA.P.11340México

Highly transparent conductive stoichiometric nanocrystalline stannic oxide coatings were deposited onto Corning®EAGLE XG®slim glass *** each coating,it was deposited for various concentrations in the aerosol solution with the substrate temperature maintained at 623.15 K by an ultrasonic spray pyrolysis(USP)*** was em-ployed both as the solution carrier in addition to aerosol directing gas,maintaining its flow rates at 3500.0 and 500.0 mL/min,*** coatings were polycrystalline,with preferential growth along the stannic oxide(112)plane,irrespective of the molarity content in the spray *** coating prepared at 0.2 M,a concentration in the aerosol solution,showed an average transmission of 60%in the visible light region spectrum with a maximum conductivity of 24.86 S/*** coatings deposited exhibited in the general photoluminescence spectrum emission colors of green,greenish white,and bluish white calculated on the intensities of the excitonic and oxygen vacancy defect level emissions.

关键词： stannic oxide coatings ultrasonic spray pyrolysis

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Antenna and em modeling with Matlab

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1000年

作者： Sergey n. Makarov.

来源：畅想之星图书光盘版（南... 评论

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Oral administration of the cannabigerol derivative VCE-003.2 promotes subventricular zone neurogenesis and protects against mutant huntingtin-induced neurodegeneration

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Translational neurodegeneration 2019年第1期8卷 111-125页

作者： José Aguareles Juan Paraíso-Luna Belén Palomares Raquel Bajo-Grañeras Carmen navarrete Andrea Ruiz-Calvo Daniel García-Rincón Elena García-Taboada Manuel Guzmán Eduardo Muñoz Ismael Galve-Roperh Instituto Ramón y Cajal de Investigación Sanitaria(IRYCIS) Ctra.Colmenar Viejokm9100 MadridSpain Departamento de Bioquímica y Biología Molecular and Instituto Universitario de Investigación neuroquímica Universidad ComplutenseMadridSpain Centro de Investigación Biomédica en Red sobre Enfermedades neurodegenerativas(CIBERnED) MadridSpain Instituto Maimónides de Investigación Biomédica de Córdoba(IMIBIC) CórdobaSpain Departamento de Biología Celular Fisiología e InmunologíaUniversidad de CórdobaCórdobaSpain Hospital Universitario Reina Sofía CórdobaSpain emerald Health Pharmaceuticals San DiegoUSA

Background:The administration of certain cannabinoids provides neuroprotection in models of neurodegenerative diseases by acting through various cellular and molecular *** cannabinoid actions in the nervous system are mediated by CB1 receptors,which can elicit psychotropic effects,but other targets devoid of psychotropic activity,including CB2 and nuclear PPARγreceptors,can also be the target of specific ***:We investigated the pro-neurogenic potential of the synthetic cannabigerol derivative,VCE-003.2,in striatal neurodegeneration by using adeno-associated viral expression of mutant huntingtin in vivo and mouse embryonic stem cell differentiation in ***:Oral administration of VCE-003.2 protected striatal medium spiny neurons from mutant huntingtin-induced damage,attenuated neuroinflammation and improved motor ***-003.2 bioavailability was characterized and the potential undesired side effects were evaluated by analyzing hepatotoxicity after chronic ***-003.2 promoted subventricular zone progenitor mobilization,increased doublecortin-positive migrating neuroblasts towards the injured area,and enhanced effective ***,we dem.nstrated the proneurogenic activity of VCE-003.2 in embryonic stem ***-003.2 was able to increase neuroblast formation and striatal-like CTIP2-mediated ***:The cannabigerol derivative VCE-003.2 improves subventricular zone-derived neurogenesis in response to mutant huntingtin-induced neurodegeneration,and is neuroprotective by oral administration.

关键词： Cannabinoid Huntingtin neurodegeneration neurogenesis PPAR

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急性呼吸衰竭患儿无创通气疗效的预测因子研究

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中国小儿急救医学 2010年第6期 494-494页

作者： Mu■oz-Bonet JI Flor-Macin em Brines J 杨明首都医科大学附属北京儿童医院

目的无创通气（nIV）是急性呼吸衰竭（ARF）的治疗选择之一,但病情需要时也不能延迟气管插管。本研究目的是探讨可预测nIV治疗急性呼吸衰竭成功或失败的临床指标。设计前瞻性非对照临床研究。场所一所大学医院的PICU。对象 4年期间因中... 详细信息

目的无创通气（nIV）是急性呼吸衰竭（ARF）的治疗选择之一,但病情需要时也不能延迟气管插管。本研究目的是探讨可预测nIV治疗急性呼吸衰竭成功或失败的临床指标。设计前瞻性非对照临床研究。场所一所大学医院的PICU。对象 4年期间因中重度ARF接受nIV治疗的1个月～16岁儿童,呼吸机为配备nIV模块的Drger Evita 2 Dura。需气管插管者被定义为nIV失败。测量指标和主结果 47例患儿中,9例（19.1%）在nIV开始3～87 h[（33.6±29.6）h]需气管插管。nIV失败与年龄小[（4.0±3.3）岁vs（7.7±5.0）岁,PnIV开始后的2～4 h,患儿心率明显减慢[（130.0±25.8）次/min vs（116.0±27.7）次/min,P11.5 cmH2O,FiO2>0.6可预测nIV失败;并有可能通过设定指标上限,减少患儿气管插管延迟的风险。

关键词：无创通气急性呼吸衰竭急性呼吸窘迫综合征预测因子平均气道压儿童

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Biomarkers of Stress and Inflammation in Assessing the Quality of Welfare of Conditioned Vaquejada Horses

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Open Journal of Veterinary Medicine 2023年第8期13卷 147-159页

作者： Keity Laiane Gomes Trindade Carolina Jones Ferreira Lima da Silva Raissa Karolliny Salgueiro Cruz César Fabiano Vilela Joana de Sousa Araújo Simões Clarisse Simões Coelho José Dantas Ribeiro Filho Helena emília Cavalcanti da Costa Cordeiro Manso Helio Cordeiro Manso Filho núcleo de Pesquisa Equina Universidade Federal Rural de Pernambuco Recife Brazil Faculdade de Medicina Veterinária Centro Universitário Cesmac Maceió Brazil Médico Veterinário Privado Americana Brazil Equine Academic Division Faculty of Veterinary Medicine Lusofona University (ULusofona) Lisbon Portugal CIISA-Centre for Interdisciplinary Research in Animal Health Faculty of Veterinary Medicine University of Lisbon Lisbon Portugal Associate Laboratory for Animal and Veterinary Science (AL4AnimalS) Faculty of Veterinary Medicine University of Lisbon Lisbon Portugal Mediterranean Institute for Agriculture Environment and Development Universidade de évora évora Portugal Departamento de Medicina Veterinária Universidade Federal de Vi&#231osa Vi&#231osa Brazil

In recent decades, the intensity of training and equestrian competitions has significantly increased, thus the assessment of the well-being of the equine athlete has become essential in all equestrian modalities. The aim of this study was to ascertain whether equine athletes submitted to a vaquejada simulation test (VqST), comprised of three races, presented changes in blood biomarkers related to stress and health status. Fourteen healthy Quarter Horses, used as pull horses in this equestrian modality, were evaluated. Ten animals were submitted to the VqST and the remaining four were used as a control group. Blood samples were collected pre-test (during fast), immediately after, and at 1, 4 and 24 hours of recovery. The assessed blood biomarkers included cortisol, interleukin (IL)-6, IL-1β, iron, urea, creatinine, and gamma-glutamyl transferase (GGT) concentrations and results were analyzed using One Way AnOVA (time) with the SigmaStat 13.0 software. no differences between sample times were detected in both groups (p > 0.05) and no differences were found between groups (p > 0.05). The results suggest that all horses were well conditioned for the level of effort imposed by the three vaquejada races. The adaptation to physical exercise may enable the regulation of the acute response to stress in the tissues involved in the exercises, with no differences being observed in stress and health biomarkers, such as IL-6, IL-1β and cortisol. In conclusion, well-conditioned vaquejada horses exhibit a balanced regulation of biological processes, which contributes an increased athletic longevity and better quality of athletic life.

关键词： Horse Races Welfare Hormones Cortisol Interleukins Iron

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The role of natural killer cells in the uterine microenvironment during pregnancy

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Cellular & Molecular Immunology 2018年第11期15卷 941-943页

作者： Julia P.Andreotti Ana E.Paiva Pedro H.D.M.Prazeres Daniel A.P.Guerra Walison n.Silva Rogerio S.Vaz Akiva Mintz Alexander Birbrair Department of Pathology Federal University of Minas GeraisBelo HorizonteMGBrazil Department of Biotechnology and Bioprocess Engineering Federal University of ParanaCuritibaPRBrazil Department of Radiology Columbia University Medical CenterNew YorkNYUSA

Pregnancy is a choreographed physiological phenomenon that involves maternal-fetal *** the cellular and molecular mechanisms involved in this communication will allow us to develop therapies for gestational *** is known about the role of natural killer(nK)cells in the uterine *** a recent study,Fu et al.(2017)used state-of-art technologies and showed that nK cells stimulate fetal growth via growth-promoting factors.

关键词： killer fetal uterine

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Experimentation on Tool Wear and Surface Roughness in AISI D2 Steel Turning with WC Insert

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Modern Mechanical Engineering 2018年第3期8卷 204-220页

作者： n. López-Luiz O. Jiménez Alem.n F. Alvarado Hernández M. Montoya Dávila V. H. Baltazar-Hernández Centro de Tecnología Avanzada CIATEQ Doctorado en Manufactura Avanzada Aguascalientes México Departamento de Ingeniería de Proyectos CUCEI Universidad de Guadalajara Zapopan Jal México Maestria en Ciencia e Ingeniería de los Materiales Universidad Autónoma de Zacatecas Zacatecas México

The Taguchi method, based on an orthogonal arrangem.nt (L9, 33), the vari-ance analysis, the signal-to-noise ratios and the response surface methodol-ogy have been used to optimize maximum flank wear (VBmax) and surface roughness (Ra) of the cutting tool when turning a hardened steel AISI D2 (65 HRC) with PVD—TiAln coated WC insert upon dry environment. By em-ploying regression models;cutting speed, cutting depth and feed rate, which optimize maximum flank wear and surface roughness were validated. Results of relation signal-to-noise ratios, showed that with cutting speed of 200 m/min, cutting depth of 0.2 mm and feed rate of 0.20 mm/rev, Ra is opti-mized. With cutting speed of 150 m/min, cutting depth of 0.4 mm and feed rate of 0.3 mm/rev, VBmax is optimized. Through the variance analysis it was concluded that the depth of cut was the main parameter that affected on the surface roughness;whereas, the feed rate was the most influential parameter on the flank wear. Confirmation test results showed that the Taguchi method was very successful in the optimization of machining parameters for mini-mum surface roughness and flank wear in the turning of the D2 steel.

关键词： Turning Taguchi Method Wear of Cutting Tool Surface Roughness AISI D2

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Mn0.8Zn0.2Fe2O4 nanoparticulates spinel ferrites:An approach to enhance the antenna field strength for improved magnitude versus offset(MVO)

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Progress in natural Science:Materials International 2014年第4期24卷 364-372页

作者： Majid niaz Akhtar nadeem.nasir Muhammad Kashif noorhana Yahya Mukhtar ahmad Ghulam Murtaza Muhammad Azhar Khan M.H.Asif A.Sattar R.Raza M.Saleem S.n.Khan Department of Physics COMSATS Institute of Information Technology Electrical and Electronic Engineering Department Universiti Teknologi PETRONAS Fundamental and Applied Sciences Department National Textile University Fundamental and Applied Sciences Department Universiti Teknologi PETRONAS Centre for Advanced Studies in Physics G.C.University Department of Physics The Islamia University of Bahawalpur

Electromagnetic signals in deep reservoir are very weak so that it is difficult to predict about the presence of hydrocarbon in seabed logging(SBL) *** the present work,Mn0.8Zn0.2Fe2O4 nanoferrites were prepared by a sol–gel technique at different sintering temperatures of450 °C,650 °C and 850 °C to increase the strength of electromagnetic(em) ***,FESem,Raman spectroscopy and HRTem were used to analyze the phase,surface morphology and size of the *** properties of the nanoferrites were also measured using an impedance network ***,nanoferrites sintered at 850 °C with initial permeability of 200 and Q factor of 50 were used as magnetic feeders with the em *** scale experiments were performed to investigate the effect of magnetic field strength in scale *** and MATLAB softwares were also used to confirm the oil presence in scale *** was observed that the magnitude of the em waves for the antenna was increased up to 233%.Finally,the correlation values also show 208% increase in the magnetic field strength with the presence of the ***,antenna with Mn0.8Zn0.2Fe2O4 nanoferrites based magnetic feeders can be used for deep water and deep target hydrocarbon exploration.

关键词： nanoferrites Transmission Electron Microscopy Initial permeability Q factor Antenna

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Additions of landscape metrics improve predictions of occurrence of species distribution models

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Journal of Forestry Research 2017年第5期28卷 963-974页

作者： rica Hasui Vinícius X.Silva Rogrio G.T.Cunha Flavio n.Ramos Milton C.Ribeiro Mario Sacramento Marco T.P.Coelho Diego G.S.Pereira Bruno R.Ribeiro Laboratório de Ecologia de Fragmentos Florestais(ECOFRAG) Instituto de Ciência da NaturezaUniversidade Federal de Alfenas Laboratório de Ecologia Espacial e Conservao(LEEC) Departamento de EcologiaUNESP Estao de Hidrobiologia e Piscicultura de Furnas–EHPF Programa de Pós-Graduao em Ecologia e Evoluo da Universidade Federal de Goiás Universidade Federal de Goiás Departamento de Ciências Florestais Universidade Federal de LavrasCmpus Universitário

Species distribution models are used to aid our understanding of the processes driving the spatial patterns of species’ habitats. This approach has received criticism, however, largely because it neglects landscape metrics. We examined the relative impacts of landscape predictors on the accuracy of habitat models by constructing distribution models at regional scales incorporating environmental variables (climate, topography, vegetation, and soil types) and secondary species occurrence data, and using them to predict the occurrence of 36 species in 15 forest fragments where we conducted rapid surveys. We then selected six landscape predictors at the landscape scale and ran general linear models of species presence/absence with either a single scale predictor (the probabilities of occurrence of the distribution models or landscape variables) or multiple scale predictors (distribution models + one landscape variable). Our results indicated that distribution models alone had poor predictive abilities but were improved when landscape predictors were added; the species responses were not, however, similar to the multiple scale predictors. Our study thus highlights the importance of considering landscape metrics to generate more accurate habitat suitability models.

关键词： Ecological niche model Generalized linear models Habitat suitability Landscape structure Maxent

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