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Open Jour.al of Applied Sciences 2021年第9期11卷 1038-1045页

作者： Fr.da Lissete Flor.s r.ver. Gr.thell Geor.ina Pér.z-Sánchez Miguel Angel barron-Meza Joan r.yes Mir.nda Dulce Yolotzin Medina Velázquez Division of Basic Science and Engineer.ng Universidad Autónoma Metropolitana México City México

Ther. is a constant gr.wth in the demand of data infor.ation tr.nsmission capacity, that is, mor. and mor. people send data, voice, video signals, among other., thr.ugh communications networ.s. Due to the above ther. is gr.at inter.st in impr.ving networ. devices, such as optical amplifier., which must cover.a lar.e bandwidth and gener.te gr.ater.gain than those cur.ently available. For.this r.ason in this wor. a computational simulation for.a Quasi-system was car.ied out thr.e ener.y levels of Er.ium and Ytter.ium var.ing their.concentr.tions and pr.ving that they ar. optimal candidates in a zinc phosphate matr.x as this type of glass contains pr.per.ies such as, high tr.nspar.ncy, low melting point, high ther.al stability, high gain density due to high solubility, low r.fr.ctive index and low disper.ion, which makes them optimal as signal amplifier.. The r.sults confir. that by incr.asing the doping of the Er.ium ion the gain of the amplifier.decr.ases, contr.r. to the Ytter.ium ion that by incr.asing the doping the gain of the amplifier.incr.ases.

关键词： Optical Telecommunications r.r. Ear.hs Doping Optical Amplifier Gain

A method to fabr.cate small featur.s on scaffolds for.tissue engineer.ng via selective laser.sinter.ng

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Jour.al of Biomedical Science and Engineer.ng 2010年第2期3卷 138-147页

作者： S. Lohfeld M. A. Tyndyk S. Cahill N. Flaher.y V. barron P. E. McHugh 不详

Pur.ose: Selective laser.sinter.ng (SLS) is a r.pid pr.- totyping technique applied to pr.duce tissue-engineer. ing scaffolds fr.m powder.mater.als. The standar. scanning technique, however. often pr.duces str.ts of extensive thickness, which means fabr.cation of high- ly por.us scaffolds with small over.ll dimensions is quite difficult. Never.heless, this study aims to over.ome this shor.fall. Design/methodology/appr.ach: To this end, thr.e scanning methods wer. evaluated in ter.s of minimum featur. size and fr.edom of design, using a test polyamide (PA) mater.al. Polycapr.lactone (PCL) was then employed to cr.ate highly por.us 3D scaffolds using the pr.fer.ed scanning me- thod to pr.duce thin str.ts. Findings: While in nor.al scanning mode some featur.s wer. well above the laser.spot diameter. str.t thicknesses below the laser.spot diameter.wer. achieved when using the “outline scan” function for.PA mater.al. Those achieved for.PCL wer. slightly higher.and in the 500-800 ?m r.nge, with an aver.ge por. size of 400 μm. Investigations on the pr.per.ies of the scaffolds r.vealed an effective compr.ssion modulus of the PCL scaffold of 6.5 MPa. Fur.her.or., ther. was no change in physical or.che- mical pr.per.ies when the scaffolds wer. stor.d in a physiological envir.nment for.7 weeks. Or.ginality/ value: Though SLS is consider.d as a fabr.cation te- chnique for.tissue engineer.ng scaffolds, actually pr.- duced scaffolds did not comply with por.sity r.quir.ments and limitations of the SLS pr.cess in pr.du- cing featur.s at the size of the laser.beam spot have not been discussed. The pr.sent paper.shows the capabilities of the SLS pr.cess based on two mater.als and pr.sents a method to minimize featur. size in scaffolds.

关键词： Selective Laser Sinter.ng r.pid Pr.totyping Scaffolds Polycapr.lactone Tissue Engineer.ng

Assessment of r.sk of Car.ier.Waves in the Assisted r.pr.ductive Labor.tor.

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Open Jour.al of Obstetr.cs and Gynecology 2015年第10期5卷 535-541页

作者： Samuel D. Pr.en Jessica Smith Chr.sty barron Joseph Mar.in Naghma Far.oqi Alita Loveless Amy Van Gheem Lindsay L. Penr.se Depar.ment of Animal and Food Sciences Texas Tech University Lubbock USA Depar.ment of Obstetr.cs and Gynecology Texas Tech University Health Sciences Center Lubbock USA

Assisted r.pr.ductive technology (Ar.) labor.tor.es r.pr.sent the mar.iage of the most basic of biological activities with the most cutting edge technologies. While this association has wor.ed well, the mixtur. of biology and technology can cr.ate r.sks to nor.al embr.o development. r.cently a significant amount of liter.tur. has explor.d the r.sks of manmade, electr.cally induced magnetic fields and car.ier.waves on r.pr.duction, which some studies have suggested will lower.functional gamete number. in the males and potentially induce genetic issues in embr.os. However. little is known about these phenomena within the Ar. labor.tor., a labor.tor. filled with electr.nic equipment. The object of the pr.sent study was to explor. the potential exposur. of gametes and ear.y stage embr.os to two of the most pr.valent fields and waves utilized in manmade technologies seen in the gener.l envir.nment, electr.magnetic fields (EMF) and r.dio fr.quency waves (r.), and deter.ine the effect var.ing levels of these ener.etic for.es had on gamete function and embr.o development. r.sults indicated that while extr.mely high concentr.tions of EMF (appr.ximately 50-100X of labor.tor. backgr.und) caused negative outcomes in both gametes and embr.os, levels consistent will the major.ty of lab equipment did not appear.to impact gr.wth, or.function. Fur.her. even extr.mely high r. appear.d to have no impact cellular.function. r.sults suggest few issues with EMF or.r. on gamete and embr.o function at nor.al labor.tor. levels for.the r.latively shor. exposur. times seen in the Ar. labor.tor..

关键词： Assisted r.pr.ductive Technologies Electr.magnetic Fields r.dio Fr.quency Waves Embr.os Sper.

新南威尔士东部某些显生宙金刚石起源的俯冲成因模式

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地质科学译丛 1997年第3期14卷 1-5页

作者： L.M.barron 田晓阳 New South Wales Depar.ment of Miner.l r.sour.es St LeonardsNSW 2065Australia

新南威尔士东部已出产了500000多克拉金刚石,大部分产于北部的科普顿—富加拉地区。这些金刚石具明显的种族特征,晶面少有损伤,且其碳同位素值和矿物包体的组成不同于那些传统金刚石产区出产的金刚石,如雅库特(西伯利亚)、卡普瓦尔(南非... 详细信息

新南威尔士东部已出产了500000多克拉金刚石,大部分产于北部的科普顿—富加拉地区。这些金刚石具明显的种族特征,晶面少有损伤,且其碳同位素值和矿物包体的组成不同于那些传统金刚石产区出产的金刚石,如雅库特(西伯利亚)、卡普瓦尔(南非)或者阿盖尔(西澳),指示了其地方起源。新南威尔士东部的构造环境也不象“传统”金刚石的构造环境,包含一套显生宙增长俯冲地体及相对薄的热地壳。提出俯冲金刚石模式来解释新南威尔士东部金刚石的起源及其地质条件。该模式认为,由于成年洋壳的伸长俯冲,当下冲板块到达传统模式所需深度一半时,在金刚石稳定区内形成低湿度变质窗。金刚石保存于俯冲终止的深度上,被仰冲或合适的岩浆挟带到地表。形成的金刚石类型取决于原始源岩(金刚石同源性列于括号内):富碳和贫碳海沟沉积物(CaFeMgMn 硅酸盐,榴辉质),贫石墨玄武岩和辉长岩(榴辉质)以及二辉橄榄岩(橄榄质)。本模式预测,新南威尔士金刚石是年轻的(显生宙),而且其特征、形成年代、相关矿物和地理分析与新南威尔士区域构造有关。本俯冲金刚石模式把指示矿物范围扩大到包括粗粒金刚石、刚玉、钠石榴石,并包括一系列新的载体岩浆(碧玄岩、霞石岩、白榴岩)。以前在新南威尔士根据传统模式进行的勘探并不成功,但根据金刚石俯冲模式来重新解释时产生了一些有益的结果。据此,有理由对新南威尔士东部的金刚石潜力重新评估。

关键词：碧玄岩蓝片岩钙硅酸盐金刚石俯冲成因模式

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中新世深海沉积间断的古海洋学意义(下)

海洋石油 1984年第5期 55-62+54页

作者： G.Keller.John A.barron 芮荷凤

沉积间断 NH4(12.0—11.0百万年) 沉积间断NH4与氧同位素曲线上的一次气侯变冷相符(图1),并由一次短暂的气候回升将其与沉积间断NH3分隔了开来(Keller.,1981)。沉积间断NH4无异常的分布方式,事实上,完整的和具沉积间断的剖面均发现于... 详细信息

沉积间断 NH4(12.0—11.0百万年) 沉积间断NH4与氧同位素曲线上的一次气侯变冷相符(图1),并由一次短暂的气候回升将其与沉积间断NH3分隔了开来(Keller.,1981)。沉积间断NH4无异常的分布方式,事实上,完整的和具沉积间断的剖面均发现于低和中纬度区(图7)。

关键词：沉积间断晚第三纪太平洋上第三纪大洋碳酸盐沉积作用中新世硅质沉积古地理学古海洋学历史海洋学

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中新世深海沉积间断的古海洋学意义(上)

海洋石油 1984年第4期 45-56页

作者： G. Keller.John A. barron 芮荷凤

中新世的古海洋演化展示了水道开启与关闭所造成的重大变化、尔后发生的大洋环流变化以及南极洲主体冰川作用的发育。这些事件的后果及发生的时间,可由深海沉积间断的分布、沉积作用的类型,以及浮游生物生物地理分布的变化推知。德雷克... 详细信息

中新世的古海洋演化展示了水道开启与关闭所造成的重大变化、尔后发生的大洋环流变化以及南极洲主体冰川作用的发育。这些事件的后果及发生的时间,可由深海沉积间断的分布、沉积作用的类型,以及浮游生物生物地理分布的变化推知。德雷克水道于渐新世末到早中新世初(25-20百万年)的张开导致了深部绕极流的形成,后者又造成了南极洲的热隔离,并加快了地球的冷却。与此同时发生浮游生物的大规模更新,结果导致了晚第三纪生物组合的演变

关键词：沉积间断碳酸盐繁殖率碳化合物繁殖性能中新世第三纪溶解作用老第三纪浮游有孔虫大洋生物地层学古地理学古海洋学历史海洋学

Lithium r.cover. fr.m Electr.des in Cellphone Batter.es thr.ugh the Leaching Pr.cess with Or.anic Agents Assisted by Ultr.sound

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Jour.al of Mater.als Science and Chemical Engineer.ng 2018年第9期6卷 1-5页

作者： Pedr. A. Mar.ínez Juan C. Or.zco Alejandr. Alonso r.sa M. Luna Miguel A. barron Dulce Y. Medina Elizabeth Gar.ias-Gar.ía División de Ciencias Básicas e Ingenier.a Universidad Autónoma Metropolitana Reynosa Tamaulipas México

The pr.sent wor. pr.poses a mean for.r.cover. of metals used in cur.ent ion-lithium batter.es, like lithium, cobalt and nickel, using or.anic agents and ultr.sound instead of the mor. aggr.ssive and less envir.nment fr.endly method with sulfur.c acid. This is especially useful in those countr.es that doesn’t have lithium deposits and have a gr.wing demand of such batter.es, r.ducing the economic loss this r.pr.sents. Dur.ng the pr.cess, var.ables such as temper.tur., leaching agent concentr.tion and ultr.sound fr.quency wer. modified, using concentr.tions of 0.5 M (molar., 1 M and 1.5 M of sodium citr.te, temper.tur.s of 25°C, 55°C and 60°C and also ultr.sound fr.quencies of 20 KHz, 30 KHz and 40 KHz. It was found that the best combination of these var.ables that yielded the most quantity of the desir.d metal was 0.5 M concentr.tion for.both lithium and nickel, while using 60°C and no ultr.sound with Li and 55°C and 40 KHz for.Ni. For.Co the best var.ables discover.d wer. 1.5 molar.concentr.tion, 60°C and 40 KHz.

关键词： Lithium Leaching Or.anic Agents Ion-Lithium Batter.es Ultr.sound Leaching Sodium Citr.te

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电影引导下遗产景点的参观者分类研究

中国文化遗产 2022年第5期 110-111页

作者： Justyna B?kiewicz Anna Leask Paul barron Tijana r.ki? 赵毓西北大学文化遗产学院

电影引导下的遗产景点旅游正逐渐成为一项具有国际相关性的产业。这种旅行不仅可以影响参观者对于遗产地的期望，而且还会进一步强化参观者对于电影相关遗产阐释内容的偏好。文章选取英国罗斯林教堂，一处因书籍及电影而广受欢迎的遗产...

电影引导下的遗产景点旅游正逐渐成为一项具有国际相关性的产业。这种旅行不仅可以影响参观者对于遗产地的期望，而且还会进一步强化参观者对于电影相关遗产阐释内容的偏好。文章选取英国罗斯林教堂，一处因书籍及电影而广受欢迎的遗产景点为研究对象，通过与参观者的深度访谈，探索其对于遗产阐释的个人偏好。并将参观者划分为四个类型：充满精力的追随者、

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Luminescent Pr.per.ies of the Mn2+Ion in Zinc Phosphate Glass

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Open Jour.al of Applied Sciences 2021年第11期11卷 1212-1217页

作者： Fr.da Lissete Flor.s r.ver. Dulce Yolotzin Medina Velazquez Gabr.ela Ver.nice Ar.edondo Mar.ínez Jor.e r.ber.o Oliva Uc Car.os Eduar.o r.dr.guez Gar.ia Miguel Angel barron-Meza Joan r.yes Mir.nda Autonomus Metr.politan Univer.ity Material Area Mexico City Mexico Potosino Institute for.Scientific and Technological r.sear.h Advanced Materials Division San Luis Mexico Faculty of Physics-Mathematics Autonomous University of Coahuila Saltillo Mexico

In the development of new optoelectr.nic devices, mainly those r.lated to solid state technology (SSL), the gener.tion of luminescent mater.als with high intensity in visible r.gion and low cost is of vital impor.ance. For.this r.ason, this wor. pr.sents the luminescent pr.per.ies of zinc phosphate glasses doped with the manganese ion 2+. The manganese ion offers a series of advantages with respect to rare earths, such as a more accessible cost and an intense emission in the red color that make it a great candidate for the generation of new optoelectronic devices. The methodology for the synthesis is presented in this wor., as well as its luminescent pr.per.ies, for.concentr.tions of 2%, 10%, 13% and 15% atomic.

关键词： Luminescence Manganese Advanced Glasses

Copper.Oxide Inked with Dye Obtained fr.m the Lactar.us Indigo Fungus for.Ener.y Pr.duction

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Jour.al of Mater.als Science and Chemical Engineer.ng 2022年第11期10卷 36-51页

作者： Abigail Bautista Castañeda Mar.a Guadalupe Montes De Oca Dulce Yolotzin Medina Velazquez Jor.e Iván Aldana González Pedr. Adr.an Mar.inez Montolla Joan r.yes Mir.nda Miguel Angel barron Univer.idad Autónoma Metr.politana Departamento de Materiales Ciencias Básicas e Ingeniería Reynosa Tamaulipas México Instituto Politécnico Nacional ESIQIE UPALM S/N Col. Mexico City México

The r.sults obtained fr.m the char.cter.zation of a copper.deposit on indium doped tin oxide (ITO), inked with natur.l dye extr.cted fr.m the Lactar.us indigo fungus, for.use in Gr.tzel type solar.cells ar. r.por.ed. An electr.lyte composed of 0.1 M HNO3 and 0.5 M CuSO4 was used, this solution was pr.par.d for.copper.deposits on the ITO. Cyclic voltammetr. was per.or.ed at differ.nt scan r.tes to obtain the r.duction zone for.deposition between potentials of ?100 to ?500 mV. The dye was obtained fr.m the indigo Lactar.us fungus fr.m macer.tion, once the inked deposits wer. obtained, char.cter.zations wer. per.or.ed, the initial test was to obtain the Ultr.violet-Visible (UV-visible) of the pur. dye, and later.the same test was per.or.ed on the inked oxide. Electr.chemical Impedance Spectr.scopy (EIS) was per.or.ed on the samples, as well as Infr.r.d Spectr.scopy (FTIr. and Scanning Electr.n Micr.scopy (SEM), to char.cter.ze the mater.al pr.per.ies for.its application.

关键词： Copper.Oxide Ink Dye Ener.y Pr.duction Indigo Milk Mushr.om