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Mixed-conducting ceramic–carb.nate memb.anes exhib.ting high CO2/O2 permeation flux and stab.lity at high temperatures

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Journal of Advanced Ceramics 2020年第1期9卷 94-106页

作者： R.ORTEGA-lugo J.A.FAb.AN-ANGUIANO O.OVALLE-ENCINIA C.GOMEZ-YANEZ b.H.ZEIFERT J.ORTIZ-LANDEROS Instituto Politécnico Nacional Escuela Superior de Ingeniería Química e Industrias ExtractivasDepartamento de Ingeniería en Metalurgia y MaterialesUPALM-ZacatencoMexico City 07738Mexico Chemical Engineering School for Engineering of Matter Transport and EnergyArizona State UniversityTempeAZ 85287-6106USA

This investigation demonstrates the feasib.lity to fab.icate high quality ceramic–carb.nate memb.anes b.sed on mixed-conducting ***,it is reported the simultaneous CO2/O2 permeation and stab.lity properties of memb.anes constituted b. a comb.nation of ceramic and carb.nate phases,wherein the microstructure of the ceramic part is composed,in turn,of a mixture of fluorite and perovskite *** ceramics showed ionic and electronic conduction,and at the operation temperature,the carb.nate phase of the memb.anes is in liquid state,which allows the transport of CO32-and O2–species via different *** fab.icate the memb.anes,the ceramic powders were uniaxially pressed in a disk ***,an incipient sintering treatment was carried out in such a way that a highly porous ceramic was ***,the piece is densified b. the infiltration of molten *** of the memb.anes was accomplished b. SEM,XRD,and gas permeation techniques among *** and chemical stab.lity under an atmosphere rich in CO2 was ***2/O2 permeation and long-term stab.lity measurements were conducted b.tween 850 and 940℃.The b.st permeation–separation performance of memb.anes of ab.ut 1 mm thickness,showed a maximum permeance flux of ab.ut 4.46×10^–7 mol·m^–2·s^–1·Pa^–1 for CO2 and 2.18×10^–7 mol·m^–2·s^–1·Pa^–1 for O2 at 940℃.Memb.anes exhib.ted separation factor values of 150–991 and 49–511 for CO2/N2 and O2/N2 respectively in the studied temperature *** long-term stab.lity test showed certain microstructural changes in the memb.anes,no significant detriment on the permeation properties was ob.erved along 100 h of continuous operation.

关键词： CO2 separation O2 separation ceramic–carb.nate memb.ane selectivity

Clinical outcomes with a new design in multifocal intraocular lens:a pilot study

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Eye and Vision 2020年第1期7卷 366-374页

作者： Jorge L.Alió Pilar Yéb.na Mario Cantó Ana b.Plaza Alfredo Vega Jorge L.Aliódel b.rrio Francisco lugo Vissum Corporation Avda de Denia s/nEdificio Vissum03016 AlicanteSpain Division of Ophthalmology Universidad Miguel HernándezAlicanteSpain

Purpose:To evaluate the clinical and visual outcomes,quality of near vision and the influence of photic phenomena in patients b.laterally implanted with a new Precizon Presb.opic multifocal intraocular lens(IOL).Methods:In this prospective consecutive case series,20 eyes of 10 patients were included(mean age 63.80±12.55 years).Uncorrected and corrected visual acuity(far,intermediate and near),sub.ective refraction,b.nocular defocus curve,contrast sensitivity(CSV-1000)and quality of vision and satisfaction questionnaires were *** follow-up was 12 months after ***:At 12 months after surgery,uncorrected distance visual acuity(UDVA)improved with surgery(p=0.001)with a value of 0.08±0.08 *** near visual acuity(UNVA)was 0.22±0.12 logMAR and distance corrected near visual acuity(DCNVA)was 0.16±0.13 *** distance visual acuity(UIVA)was 0.22±0.10 *** sensitivity outcomes were similar to normal population in photopic conditions and slightly reduced in mesopic conditions of *** curve showed that this multifocal IOL was ab.e to provide a visual acuity(VA)equal or b.tter to 0.16 logMAR b.tween defocus levels of+1.00 to−2.50 *** patient satisfaction was ob.ained in quality of vision and satisfaction questionnaires ***:The Precizon Presb.opic NVA IOL(OPHTEC b.)provides good visual *** multifocal IOL provides a high percentage of spectacle independence due to good VA at far,intermediate and near distances and satisfactory contrast *** patient satisfaction was ob.erved in quality of vision and satisfaction questionnaires with a low percentage of patients manifesting photic phenomena.

关键词： Multifocal intraocular lens Near vision Photic phenomena Continuous transitional focus optic

Empowered Stakeholders: Female University Students’ Leadership During the COVID-19-Triggered On-campus Evictions in Canada and the United States

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International Journal of Disaster Risk Science 2021年第4期12卷 581-592页

作者： Haorui Wu Marla Perez-lugo Cecilio Ortiz Garcia Frances Gonzalez Crespo Adriana Castillo Canada Research Chair in Resilience School of Social WorkDalhousie UniversityHalifaxNSB3H 4R2Canada Natural Hazards Center University of Colorado BoulderBoulderCO80309USA Department of Social Sciences University of Puerto Rico MayagüezMayagüezPR00682USA The RISE Network MayagüezPR00680USA

The study of disaster-specific leadership of female university students has b.en largely neglected,especially during on-campus emergency eviction and *** on the COVID-19-triggered,on-campus evictions across Canada and the United States,this cross-national partnership examined the out-of-province/state and international female university students’leadership during the entire eviction *** in-depth interviews,this study revealed the female university students’leadership b.haviors during three stages:(1)pre-eviction:their self-preparedness formed an emotional foundation to support others;(2)peri-eviction:their attitude and leadership b.havior enab.ed them to facilitate(psychologically and physically)their peers’eviction process;and(3)post-eviction:they continued to support their peers virtually and raised the general pub.ic’s awareness regarding the plight of vulnerab.e and marginalized *** article argues that the female university students’leadership that emerged during the eviction process b.came complementary to and even augmented the universities’official efforts and *** leadership represents empirical evidence that contrib.tes to the existing literature on gender and leadership b. demonstrating female youth as empowered stakeholders rather than as merely passive *** studies could develop detailed stratification of gender and age dimensions in order to portray a more comprehensive picture of the younger generation’s leadership in hazards and disaster research and practice.

关键词： Canada COVID-19 Female leadership Gender and disaster On-campus evictions United States University students

Clinical outcomes with a newvdesign in multifocal intraocular lens:a pilot study

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Eye and Vision 2022年第5期8卷 13-21页

作者： Jorge L.Alio Pilar Yéb.na Mario Canto Ana b.Plaza Alfredo Vega Jorge L.Alio del b.rrio Francisco lugo Vissum Corporation Avda de Denia s/nEdificio Vissum03016 AlicanteSpain Division of Ophthalmology Universidad Miguel HernandezAlicanteSpain

Purpose:To evaluate the clinical and visual outcomes,quality of near vision and the influence of photic phenomena in patients b.laterally implanted with a new Precizon Presb.opic multifocal intraocular lens(IOL).Methods:In this prospective consecutive case series,20 eyes of 10 patients were included(mean age 63.80±12.55 years).Uncorrected and corrected visual acuity(far,intermediate and near),sub.ective refraction,b.nocular defocus curve,contrast sensitivity(CSV-1000)and quality of vision and satisfaction questionnaires were *** follow-up was 12 months after ***:At 12 months after surgery,uncorrected distance visual acuity(UDVA)improved with surgery(P=0.001)with a value of 0.08±0.08 *** near visual acuity(UNVA)was 0.22±0.12 logMAR and distance corrected near visual acuity(DCNVA)was 0.16±0.13 *** distance visual acuity(UIVA)was 0.22±0.10 *** sensitivity outcomes were similar to normal population in photopic conditions and slightly reduced in mesopic conditions of *** curve showed that this multifocal iOL was ab.e to provide a visual acuity(VA)equal to or b.tter than 0.16 logMAR b.tween defocus levels of+1.00 to-2.50 *** patient satisfaction was ob.ained in quality of vision and satisfaction questionnaires ***:The Precizon Presb.opic NVA IOL(OPHTEC b.)provides good visual *** multifocal IOL provides a high percentage of spectacle independence due to good VA at far,intermediate and near distances and satisfactory contrast *** patient satisfaction was ob.erved in quality of vision and satisfaction questionnaires with a low percentage of patients manifesting photic phenomena.

关键词： Multifocal intraocular lens Near vision Photic phenomena Continuous transitional focus

Heavy Metals Monitoring in Sediments from Lerma River in West-Central Mexico

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American Journal of Analytical Chemistry 2018年第2期9卷 77-87页

作者： Héctor Hernández-Mendoza María Judith Ríos-lugo Elizab.th Teresita Romero-Guzmán Lázaro Raymundo Reyes-Gutiérrez Michael E. Ketterer Instituto Nacional de Investigaciones Nucleares Ocoyoacác México Universidad del Centro de México San Luis Potosí México Universidad Autónoma de San Luis Potosí San Luis Potosí México División of Ciencias b.sicas e Ingeniería Departmentof Recursos de la Tierra Universidad Autónoma Metropolitana-Lerma (UAM-L) Lerma México Department of Chemistry Metropolitan State University of Denver Denver USA

The aim of this work was to carry out monitoring of some elements considered toxic in sediments from Lerma River. An analytical method was optimized in our lab.ratory for quantification of nickel (Ni), cob.lt (Co), manganese (Mn), arsenic (As), chromium (Cr) and lead (Pb. b. using Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES). Ten sediments were collected along the Lerma River at variab.e distances and at 20 cm depth. Samples were heated to 60°C to dryness, followed b. separation of particle size using a 74-μ No. 200 mesh for homogeneity purposes. 0.2 g of sample underwent microwave-assisted acid digestion, followed b. plate evaporation. The samples were dissolved in 10 mL with HNO3 at 5% v/v for ICP-OES analysis. A certified reference material (CRM 8704) was used to evaluate the method’s accuracy and precision. The method showed linearity, precision, accuracy, and limits of quantification and detection acceptab.e for protocol validation of analytical method. The average results ob.ained in recovery of CRM 8704 were ~90% and precision was b.low 7% for all elements. Levels concentration of As, Cr, Pb.show high pollution in A1, A7 and A8 sites. Therefore, Co, Mn and Ni can b. considered in this study as normal values. In conclusion, concentration levels of As, Cr, Pb.in sediments were high according to US-EPA and NOM-147-SEMARNAT/SSA1-2004. The presence of these heavy metals in Lerma River could b. due mainly for the emitted from industries, such as pharmaceutical, automotive, metal mechanics and tannery, and urb.n residual water. Finally, the method developed using ICP-OES has enab.ed monitoring of these elements in sediments from Lerma River, with possib.e applications in a routine analytical lab.ratory.

关键词： ICP-OES Lerma River Sediments US-EPA

水稻籽粒硝态氮和铵态氮积累特性及氮肥调控研究

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中国稻米 2016年第1期22卷 25-29页

作者：孙璐璐朱立楠郑冠龙朱方旭郭雪冬 lugo Oke 张忠臣金正勋东北农业大学农学院哈尔滨150030

选用5个粳稻品种,通过田间和盆栽试验,分析水稻籽粒中硝态氮和铵态氮含量的品种间差异和籽粒中分布特点、灌浆过程中积累动态变化及其与施氮量和谷氨酰胺合成酶活性间的关系。结果表明,精米中硝态氮和铵态氮含量品种间有显著差异,铵态... 详细信息

选用5个粳稻品种,通过田间和盆栽试验,分析水稻籽粒中硝态氮和铵态氮含量的品种间差异和籽粒中分布特点、灌浆过程中积累动态变化及其与施氮量和谷氨酰胺合成酶活性间的关系。结果表明,精米中硝态氮和铵态氮含量品种间有显著差异,铵态氮含量高于硝态氮;硝态氮和铵态氮主要分布在籽粒的米糠层里,在籽粒中呈由外到内逐渐降低的变化趋势;随着施氮量的增加,精米中硝态氮和铵态氮含量都大幅度增加,增幅高达114.1%~203.0%,但增加的幅度因品种不同而异;随灌浆进程的推进,籽粒硝态氮含量逐渐增多直至成熟,但硝态氮的日积累量和铵态氮含量随灌浆进程逐渐上升,达到峰值后又逐渐下降,呈单峰曲线变化,抽穗后25 d达到峰值,硝态氮含量高的品种日积累量显著大于含量低的品种,铵态氮含量高的品种灌浆前期积累量少于含量低的品种,而灌浆后期的积累量高于含量低的品种;籽粒谷氨酰胺合成酶活性与硝态氮和铵态氮含量及硝态氮日积累量间均呈显著或极显著正相关。

关键词：水稻硝态氮铵态氮积累特性氮肥调控

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生活心理学

硅肥施用量及时期对寒地水稻产量和品质性状及抗倒性的影响

1988年

作者：卢格(lugo J.O.) 赫尔希(Hershey G.L.)

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黑龙江农业科学 2015年第10期 49-54页

作者：金正勋 lugo Oke 朱方旭张忠臣金昌均李京远罗泓植郭雪冬邓亮东北农业大学农学院黑龙江哈尔滨150030 韩国恩博股份有限公司韩国水原441853

选用韩国产"农爱丰"扩散性硅肥和国产可溶性硅肥,设置不同施用量和施用时期处理,研究硅肥施用量及时期对寒地水稻产量和品质性状及抗倒性的影响。结果表明:施用硅肥可显著提高寒地水稻产量,硅肥最佳施用量因品种而异,施用量少增产效果... 详细信息

选用韩国产"农爱丰"扩散性硅肥和国产可溶性硅肥,设置不同施用量和施用时期处理,研究硅肥施用量及时期对寒地水稻产量和品质性状及抗倒性的影响。结果表明:施用硅肥可显著提高寒地水稻产量,硅肥最佳施用量因品种而异,施用量少增产效果不显著,过多会导致减产,肥料效率低;产量性状和品质性状对硅肥的响应虽然因品种和施肥量不同而异,但适量施用硅肥能提高每穴穗数、穗粒数和结实率、单株实粒重以及降低稻米直链淀粉含量和蛋白质含量,并缩短茎秆节间长度和增加茎粗;寒地水稻硅肥最佳施用时期为最高分蘖期至幼穗分化始期,农爱丰硅肥最佳施用量为6kg·hm-2。

关键词：水稻硅肥施用量施用时期产量品质

Particle Encapsulation in Crosslinked Hydrogel Networks： Particle Distrib.tion Optimization

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材料科学与工程（中英文b.） 2012年第10期2卷 539-550页

作者： Karem A. Court Jackeline Jerez Rodolfo J. Romanach Madeline Torres-lugo Department of Chemical Engineering University of Puerto Rico Mayaguez Campus P O Box 9000 Mayaguez Puerto Rico 00681 Department of Chemistry University of Puerto Rico Mayaguez Campus PO Box 9000. Mayaguez Puerto Rico 00681

Particle encapsulation in hydrogel memb.anes was performed to examine which physical factors are involved in particle distrib.tion within memb.anes. This investigation focused on the examination of the physicochemical interactions b.tween particles and crosslinked hydrogel networks for the creation of homogenously dispersed particles in a memb.ane. For this purpose factors such as particle charge, concentration, and memb.ane charge were examined to ascertain their effect on particle dispersion within the matrix. Anionic hydrogels composed of methacrylic acid (MAA), cationic hydrogels composed of N, N-dimethyl amino ethyl methacrylate (DMAEM), and neutral hydrogels composed of 2-hydroxyethyl methacrylate (HEMA) were utilized to encapsulate functionalized silica particles. Particle distrib.tion was analyzed b. Scanning Electron Microscopy and Near Infrared Chemical Imaging (NIR-CI). A new method was developed to evaluate the distrib.tion of particles throughout the memb.anes. NIR-CI results indicated that neutral memb.anes with low particle concentration showed b.tter particle distrib.tion.

关键词：水凝胶膜颗粒分布粒度分布凝胶网络封装交联甲基丙烯酸乙酯二氧化硅粒子