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Digestibility,Antioxidant and Anti-Inflammatory Activities of Pecan Nutshell(Carya illioinensis)Extracts

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Journal of Renewable Materials 2022年第10期10卷 2569-2580页

作者： María Janeth Rodríguez-Roque Carmen Lizette Del-Toro-Sánchez Janet Madeline Chávez-Ayala Ricardo Iván González-Vega Liliana Maribel Pérez-Pérez Esteban Sánchez-Chávez Nora AideéSalas-Salazar juan manuel soto-parra Rey David Iturralde-García María Antonia Flores-Córdova Facultad de Ciencias Agrotecnológicas Universidad Autónoma de ChihuahuaChihuahuaMéxico Universidad de Sonora Rosales y Niños Héroes S/NHermosilloSonMéxico Centro de Investigación en Alimentación y Desarrollo A.C.Unidad DeliciasDeliciasChihuahuaMéxico

Phenolic compounds are related to high biological activity,avoiding oxidation in food and human *** are by-products derived from the pecan nut processing that contain important amounts of phenols which biological activity must be *** research aimed to evaluate the antioxidant(DPPH,ABTS,FRAP and hemolysis)and anti-inflammatory activities of shell extracts from pecan nuts harvested during the crop production cycle 2018 and 2019,as well as the in vitro digestibility of their phenolic compounds,including *** showed that extracts from the crop production cycle 2018 obtained the highest yield,while those from 2019 contained the highest concentration of phenolic compounds,flavonoids and antioxidant capacity determined by DPPH(22.96 mmol ET),ABTS(91.55 mmol ET)and inhibition of hemolysis(92.12%).The anti-inflammatory activity exhibited an inhibition of the elastase enzyme up to 50 min and the bioaccessibility of phenolic compounds reached up to 32%.These results showed that pecan nutshell extracts are an important source of biologically active compounds,thus,they are suitable to be used as commodities in different fields such as agricultural,food and pharmaceutical *** studies must be carried out in order to elucidate the activity of nutshell extracts within in vivo systems.

关键词： Anti-inflammatory activity antioxidants digestibility shell phenolic compounds

Impact of Organic and Mineral Fertilization in Pecan Nut on Production,Quality and Antioxidant Capacity

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Agricultural Sciences 2019年第2期10卷 227-240页

作者： Linda Citlalli Noperi-Mosqueda juan manuel soto-parra Esteban Sánchez Francisco Javier Pina-Ramírez Ramona Pérez-Leal María Antonia Flores-Córdova Nora Aideé Salas-Salazar Facultad de Ciencias Agrotecnológicas Universidad Autónoma de ChihuahuaChihuahuaMéxico Centro de Investigación en Alimentación y Desarrollo A.C.Delicias ChihuahuaMéxico

The pecan nut is considered one of the most important dried fruits in the world by its classification as healthy food. The nutritional balance in the harvest is crucial for its impact on the production, quality and content of bioactive compounds. This research was carried out in the city of Aldama, Chihuahua (Mexico), where doses of mineral and organic fertilization were tested in L25 Taguchi structure with 6 factors and 5 levels by factor: nitrogen (N) 0 - 240 kg·ha-1, phosphate (P2O5) 0 - 120 kg·ha-1, potassium (K2O) 0 - 100 kg·ha-1, calcium (CaO) 0 - 400 kg·ha-1, liquid humus 0 - 3600 L·ha-1 and solid humus 0 - 8000 kg·ha-1. An average yield of 2.2 t·ha-1 was obtained;145 nuts per kilogram, 60% of the edible part of the nut. The total phenolic content was 225.9 mg gallic acid g-1 and the antioxidant capacity was 180.9 mg Trolox g-1. It is concluded that the factor with the greatest impact on yield, quality and antioxidant capacity in pecan nut was nitrogen. It was also found that the combination of mineral and organic fertilization helps to maintain the production and quality ranges of the nut. In turn, these factors contribute to the increase in the phenolic strength and antioxidant capacity. The optimal fertilization dosis to obtain the maximum levels in production of 3.2 t·ha-1;decrease the number of nuts per kilogram to 135, increase the percentage of the edible part of the nut to 61.8%, the increase in the total phenolic content to 318.6 mg of gallic acid g-1 and in the antioxidant capacity with 187.2 mg of Trolox g-1, was 184 kg·ha-1 of N, 107.4 kg·ha-1 of P2O5, 50 kg·ha-1 of K2O y 2777 L·ha-1 of liquid humus. Finally, the mineral fertilization complemented with organic fertilization is considered a good fertilization strategy for pecan trees and its possible benefits to health and the environment.

关键词： Carya illinoinensis(Wangen K.Koch) Pecan Nut Nutrition Organic Fertilization Antioxidants

Role of the Zinc Nutritional Status on Main Physiological Bioindicators of the Pecan Tree

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Agricultural Sciences 2017年第12期8卷 1327-1336页

作者： Angelica Anahi Acevedo-Barrera Esteban Sanchez Rosa Maria Yanez-Munoz juan manuel soto-parra Angel Lagarda-Murrieta Vicente de Paul Alvarez-Reyna Eduardo Madero-Tamargo Alejandro Moreno-Resendez Universidad Autonoma Agraria Antonio Narro TorreonMéxico Centro de Investigacion en Alimentacion y Desarrollo A.C.Unidad Delicias DeliciasMéxico Facultad de Ciencias Agrotecnologicas Universidad Autonoma de ChihuahuaChihuahuaMéxico

The purpose of this study was to analyze the effect of Zn nutritional status on the content of pigments, nonstructural carbohydrates, foliage proteins and amino acids of the pecan tree, as possible bioindicators of Zn deficiency. The experimental design was completely random with three Zn nutritional statuses: Normal, Intermediate and Deficient, being selected considering visual symptomatology. On all three nutritional statuses, the concentration of photosynthetic pigments was determined as well as of total soluble proteins and amino acids. Obtained results indicate that Zn deficient nutritional status was characterized by minimum photosynthetic pigment, protein concentrations, maximum amino acid and nonstructural carbohydrate concentrations. While the normal Zn nutritional status presented maximum photosynthetic pigments, proteins concentrations, minimum amino acids and carbohydrate concentrations. On the other hand, intermediate Zn nutritional status was characterized by a medium level between the other two Zn nutritional statuses. Finally, we stress the fact that pigments, proteins, amino acids and nonstructural carbohydrates may be good physiological indicators related to Zn nutritional status on pecan trees.

关键词： Carya illinoinensis Bioindicators Deficiency Nutritional Stress

Envelopes of Commutative Rings

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Acta Mathematica Sinica,English Series 2012年第3期28卷 561-580页

作者： Rafael parra manuel SAORIN Departamento de Clculo. Escuela Bsica Facultad de Ingeniería Universidad de los Andes Departamento de Matemticas Universidad de Murcia

Given a significative class F of commutative rings, we study the precise conditions under which a commutative ring R has an S-envelope. A full answer is obtained when F is the class of fields, semisimple commutative rings or integral domains. When .F is the class of Noetherian rings, we give a full answer when the Krull dimension of R is zero and when the envelope is required to be epimorphic. The general problem is reduced to identifying the class of non-Noetherian rings having a monomorphic Noetherian envelope, which we conjecture is the empty class.

关键词： Noetherian ring envelope local ring artinian ring Krull dimension

Models and observations of sunspot penumbrae

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Science China(Physics,Mechanics & Astronomy) 2009年第11期52卷 1670-1677页

作者： BORRERO juan manuel Max Planck Institut fr Sonnensystemforschung Max Planck Strasse 2 D 37191 Katlenburg-Lindau Germany

The mysteries of sunspot penumbrae have been under an intense scrutiny for the past 10 years. During this time, some models have been proposed and refuted, while the surviving ones had to be modified, adapted and evolved to explain the ever-increasing array of observational constraints. In this contribution I will review two of the present models, emphasizing their contributions to this field, but also pinpointing some of their inadequacies to explain a number of recent observations at very high spatial resolution (0.32 ). To help explaining these new observations I propose some modifications to each of those models. These modifications bring those two seemingly opposite models closer together into a general picture that agrees well with recent 3D magneto-hydrodynamic simulations.

关键词： sunspots magnetic fields spectropolarimetry magnetohydrodynamics

Quality assessment of Continuous Operating Reference Stations(CORS)-GPS stations in Mexico

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Geodesy and Geodynamics 2022年第3期13卷 275-287页

作者： Daniel Hernández-Andrade Rosendo Romero-Andrade Gopal Sharma manuel E.Trejo-soto juan L.Cabanillas-Zavala Faculty of Earth and Space Sciences Autonomous University of Sinaloa80013Culiacán RosalesSinaloaMexico North Eastern Space Applications Centre Umiam793103MeghalayaIndia

The present analysis provided the quality assessment of 65 Continuous Operating Reference Stations(CORS) situated in and around Mexico using the data of about ten years(January 2010 to January 2020).To accomplish the assessment,we considered 4 quality indexes for performing the quality check,incluing the multipath effect on L1 and L2 bands,signal-to-noise ratio in both bands,cycle slips,and ***,a new reference parameter named regio nal values for Mexico(RVM) was calculated for the stations situated in ***,an exhaustive analysis of the quality indicators in the worst and best cases was *** signal degradation was proved by a long-term time series and cru stal defo rmation analysis in GAMIT/GLOBK *** results showed a stro ng correlation between integrity,cycle slips and daily observations time,and the multipath effect is strong in the case of outdated *** study indicates that the estimated quality indexes and values could be the basis for establishing new CORS in Mexico,and the errors corrections which cannot be mitigated in the postprocessing stage would greatly help utilize the data for different scientific *** results were supported by deformation analysis in part of Baja California Peninsula in Mexico indicating northern and eastern velocity vector of -3.08±0.02 mm/yr,-7.85±0.02 mm/yr and-0.07±0.03 mm/yr,-9.33±0.02 mm/yr respectively at MPR1 and INEG stations.

关键词： Multipath effect Signal-to-Noise ratio Cycle slip Integrity Regional quality indicators IGS indicators

Virtual Conductance Based Cascade Voltage Controller for VSCs in Islanded Operation Mode

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Journal of Modern Power Systems and Clean Energy 2022年第6期10卷 1704-1713页

作者： Francisco Jesús Matas-Díaz manuel Barragán-Villarejo juan Carlos Olives-Camps juan manuel Mauricio JoséMaría Maza-Ortega Department of Elec‐trical Engineering Universidad de SevillaSeville 41092Spain

Voltage source converters have become the main enabler for the integration of distributed energy resources in *** the case of islanded operation,these devices normally set the amplitude and frequency of the network voltage by means of a cascade controller composed of an outer voltage control loop and an inner current control *** strategies to compute the gains of both control loops have been proposed in the literature in order to obtain a fast and decoupled response of the voltages at the point of common *** paper proposes an alternative and simple methodology based on the introduction of a virtual conductance in the classic cascade *** strategy allows to design each control loop independently,obtaining a closed-loop response of a first-order *** this way,the gains of each control loop are easily derived from the parameters of the LC coupling filter and the desired closed-loop time ***,a state observer is included in the controller to estimate the inductor current of the LC filter in order to reduce the number of required measurements.A laboratory testbed is used to validate and compare the proposed *** experimental results demonstrate the effectiveness of the proposal both in steady-state and transient regimes.

关键词： Voltage source converter microgrid cascade controller virtual conductance

Contralateral trapezius transfer to treat scapular winging: A case report and review of literature

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World Journal of Orthopedics 2019年第1期10卷 33-44页

作者： juan José Gil-álvarez Pablo García-parra manuel Anaya-Rojas María del Pilar Martínez-Fuentes Department of Orthopedics and Traumatology Hospital Universitario Virgen del Rocío Department of Rehabilitation Hospital Universitario Virgen del Rocío

BACKGROUND No dynamic technique, such as tendon transfer, has been described for scapular winging due to levator scapulae or rhomboid major and minor palsies resulting from an isolated dorsal scapular nerve injury. Thus, we evaluated how the contralateral trapezius compound osteomuscular flap transfer would work in stabilizing lateral scapular winging, and the case is reported here. A literature review was also conducted, and articles relevant to the case are *** SUMMARY A 37-year-old male patient who had sustained an isolated dorsal scapular nerve injury underwent reconstructive surgery using the contralateral trapezius compound osteomuscular flap transfer technique to treat scapular winging and the consequent pain, and to restore function from the shoulder impairment. As a result, the involved shoulder showed an improved Constant-Murley score, from19.5% to 81.88%.CONCLUSION Contralateral trapezius osteomuscular flap transfer succeeded in stabilizing scapular winging in this case, improving shoulder function and affording pain relief.

关键词： Trapezoid muscle Osteomuscular flap Scapular winging Rhomboid muscles Nerve paralysis Dorsal scapular nerve Case report

Hot corrosion mechanism of yttria-stabilized zirconia powder in the presence of molten Na_(2)SO_(4)+V_(2)O_(5) salts

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Rare Metals 2021年第5期40卷 1307-1316页

作者： Jhonattan De la Roche juan manuel Alvarado-Orozco Alejandro Toro Tribology and Surfaces Group Universidad Nacional de ColombiaMedellin 050041Colombia Centro de Ingeniena y Desarrollo Industrial-CIDESI Queretaro 76125Mexico Consorcio de Manufactura Aditiva-CONMAD Queretaro 76125Mexico

The hot corrosion behavior of yttria-stabilized zirconia(YSZ)powder specimens exposed to Na_(2)SO_(4)/V_(2)O_(5) salts mixtures at high temperature was *** tests were carried out at 1000℃ for 10 h,the salt concentrations varied from 0.1 wt%to 1.00 wt%,and the Na_(2)SO_(4)/V_(2)O_(5) mass ratios were between 0.20 and 0.44 following a factorial design 22.X-ray diffraction(XRD)analyses of the tested samples showed with a confidence of95%that the mixture composed of 32 wt%Na_(2)SO_(4)+68 wt%V_(2)O_(5),and 1.00 wt% salt concentration led to high destabilization of the t’-YSZ phase and formation of YVO_(4) products.A second set of experiments were conducted to assess the influence of temperature on the hot corrosion response of the YSZ in the range between 490 and 1100℃.Thermogravimetric analysis(TGA)experiments and Rietveld adjustments of XRD patterns showed that the mass loss of the samples varied with testing temperature and also that the major destabilization of tetragonal phase occurred at 900℃.

关键词： Hot corrosion Molten salts Yttria-stabilized zirconia Thermal barrier coatings