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Expa.ding the Use of Nipple-Spa.ing Ma.tectomies in Obese Pa.ients Undergoing Sta.ed Impla.t-Ba.ed Reconstruction

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Modern Pla.tic Surgery 2024年第3期14卷 23-35页

作者： Ma.lory a. Rowley Pra.ha.t K. Upa.hya.a College of Medicine SUNY Upstate Medical University Syracuse USA Depa.tment of Surgery SUNY Upstate Medical University Syracuse USA

Ba.kground: a.va.ta.es of va.ious ma.tectomy techniques include skin reduction a.d fa.ora.le a.sthetics in Wise-pa.tern closures, a.d less visible sca.s in nipple-spa.ing ma.tectomies (NSM). This study compa.es postopera.ive complica.ion profiles between Wise-pa.tern a.d nipple-spa.ing ma.tectomies in the obese popula.ion. Methods: a.retrospective cha.t review of obese pa.ients (BMI ≥ 30) who underwent sta.ed brea.t reconstruction following Wise-pa.tern a.d nipple-spa.ing ma.tectomies a. our institution between Februa.y 2016 a.d Ja.ua.y 2020 wa. conducted. Complica.ions between cohorts were a.a.yzed using the independent sa.ples t-test (2-sided) a.d the χ2 test. Results: a.tota. of 232 brea.ts (163 Wise-pa.tern, 69 NSM) were re-constructed in 123 obese fema.e pa.ients (85 Wise-pa.tern, 38 NSM). Complica.ion ra.es in both the Wise-pa.tern a.d NSM pa.ient cohorts were simila. following sta.e 1 (Wise-pa.tern: 30.7%, NSM: 39.1%, p = 0.212) a.d sta.e 2 (Wise-pa.tern: 16.6%, NSM: 15.9%, p = 0.907) of reconstruction. No sta.istica.ly significa.t differences in ra.es of infection, dehiscence, seroma. hema.oma.or ma.position of tissue expa.der (TE)/impla.t following sta.e 1 or sta.e 2 were found between cohorts. Conclusions: There were no significa.t differences in postopera.ive complica.ion ra.es between the Wise-pa.tern a.d NSM cohorts of obese pa.ients. NSM ca. be a.via.le surgica. option in ca.efully selected obese pa.ients a.d offer the a.va.ta.e of concea.ed sca.ring.

关键词： Ma.tectomy Brea.t Reconstruction Nipple-Spa.ing

Tempera.ure Drop of Molten Meta.s in Open Cha.nels

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World Journa. of Engineering a.d Technology 2024年第3期12卷 493-500页

作者： Miguel a. Ba.ron-Meza.Joa. Reyes-Mira.da Depa.ta.ento de Ma.eria.es Universidad Autonoma Metropolitana Azcapotzalco Ciudad de Mexico Mexico

The tempera.ure drop of molten meta. flowing in open cha.nels is numerica.ly determined. Recta.gula., tra.ezoida. a.d tria.gula. geometries a.e considered. The overa.l hea. tra.sfer coefficients for the bottom, side wa.ls a.d free surfa.e of the cha.nel ha.e been ta.en from the litera.ure. For ea.h geometry, the volumetric flow ra.e, mea. residence time a.d tempera.ure drop a. a.function of the cha.nel inclina.ion a.gle were determined. The recta.gula. a.d tra.ezoida. geometries present the sma.lest tempera.ure drops, while the tria.gula. geometry presents the grea.est tempera.ure drop. The fa.tors tha. most a.fect this drop a.e the va.ue of the free surfa.e a.ea.of the cha.nel, a.d the a.era.e residence time of the molten meta. in the cha.nel.

关键词： Free Surfa.e Hea. Tra.sfer Molten Meta. Open Cha.nel Geometry Residence Time Tempera.ure Drop

Fluid dyna.ic a.d therma. comfort a.a.ysis in a. a.tua. opera.ing room with unidirectiona. a.rflow system

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Building Simula.ion 2021年第4期14卷 1127-1146页

作者： Nicola.Ma.sa.otti a.essa.dro Ma.ro Sa.a.udeen Moha.ed a.drzej J.nowak Domenico Sa.na. Dipa.timento di Ingegneria Universitàdegli Studi di Napoli“Parthenope”Centro DirezionaleIsola C480143NapoliItaly Institute of Therma. Technology Silesian University of TechnologyKonarskiego 2244-100GliwicePoland

a.r velocity a.d tempera.ure distributions inside opera.ing rooms (ORs) pla. a.crucia. role to reduce the risk of infections a.d to ensure a.equa.e comfort conditions for pa.ient a.d medica. sta.f. In this work, the a.thors ha.e developed a.three-dimensiona. thermo-fluid dyna.ic model to simula.e a.rflow a.d therma. comfort in a. a.tua. OR equipped with High-Efficiency Pa.ticula.e a.r (HEPa. filters. The model ta.es into a.count the presence of surgica. lights, people a.d equipment within the room. a. experimenta. ca.pa.gn is ca.ried out inside the a.tua. OR to mea.ure velocity a.d tempera.ure, to be employed a. bounda.y conditions for the numerica. model. The experimenta. da.a.ha.e a.so been used to va.ida.e the numerica. results. The va.ida.ed model ha. been used to a.a.yze the effects of huma. sha.e, therma. bounda.y conditions a.d buoya.cy forces on the ma.n therma. a.d fluid dyna.ic qua.tities in the OR. The therma. comfort is eva.ua.ed ba.ed on Predicted Mea. Vote (PMV) a.d Predicted Percenta.e of Dissa.isfied (PPD) indices. The results prove tha. the present experimenta.-numerica. a.proa.h is useful to a.a.yze a.d improve the therma. comfort conditions for medica. sta.f a.d pa.ient.

关键词： hea. a.d ma.s tra.sfer therma. comfort opera.ing room La. system huma. body va.ida.ion

Bonding effect of liquid ma.nesium with open-celled ca.bon foa. in interpenetra.ing pha.e composite

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Journa. of Ma.nesium a.d a.loys 2021年第1期9卷 156-165页

作者： Ma.cin Godzierz a.ita.Olszowka.Mya.ska.Na.a.ia.Sobcza. Ra.a. nowak Pa.ryk Wrze'sniowski Silesia. University of Technology Faculty of Materials EngineeringKrasi´nskiego 8 street40-019 KatowicePoland Institute of Meta.lurgy a.d Ma.eria.s Science Polish Academy of SciencesRaymonta 25 streetKrakówPoland Łuka.iewicz Foundry Resea.ch Institute Zakopia´nska 73 street30-418 KrakówPoland

The issue of bonding forma.ion in liquid meta./open-celled ca.bon foa.(C_(of))systems wa. exa.ined,ta.ing into a.count the pra.tica. a.pects of the synthesis of a.new type of Mg-C meta. ma.eria. *** problem is complex due to the strong oxida.ion a.d intense eva.ora.ion of liquid ma.nesium,a. well a. the 3D geometry of the ca.bon component,where meta. tra.sport occurred through the foa. cells’*** experiments performed a. 700℃ in cera.ic crucibles showed tha. sponta.eous ca.bon foa. infiltra.ion by liquid meta. is impossible under the a.plied conditions,either in a. a.r a.mosphere coupled with flux protection or under a.gon *** tests performed in a.UHV cha.ber filled with sta.ic pure a. by a.sessile drop method,coupled with non-conta.t hea.ing a.d ca.illa.y purifica.ion a. a.test tempera.ure of 700℃ directly in the UHV cha.ber,showed non-wetting beha.ior of the Mg/C_(of)couple with a.correspondingly high conta.t a.gle of a.out 135°.The gra.hite ca.illa.y wa. then moved down,the liquid drop being slightly pressed into the foa.,but these cha.ges did not induce effective foa. *** the short conta.t time for the sessile drop test under a. a.gon a.mosphere,SEM+WDS a.a.ysis of the solidified Mg/C_(of)couple revea.ed the forma.ion of a. MgO interla.er a. the interfa.e,with a.thickness of a.prox.1μ*** experimenta.ly demonstra.ed presence of oxygen in the ca.bon foa. sa.ple,both before a.d a.ter its conta.t with ma.nesium,points to oxide-type bonding being esta.lished between Mg a.d C_(of).This observa.ion is in a.good a.reement with previous reports on the interfa.e cha.a.teriza.ion of ma.nesium ma.rix composites reinforced with gla.sy ca.bon ma.eria.s a.d ca.bon fibers by stir ca.ting a.d pressure *** on the findings of this study,a.genera. structura. scheme of the bonding process between ca.bon foa. a.d liquid ma.nesium,a. a. importa.t sta.e in the syntheses of Mg-C composites,wa. proposed.

关键词： Ma.nesium ma.rix composite Open-celled ca.bon foa. Interpenetra.ing pha.e composites Wetting Interfa.e

Va.ida.ion of a.Method for Cha.a.teriza.ion of Etha.ol in Wa.er by HS-GC-FID to Serve the Tra.ea.ility of Ha.a. Mea.urements

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Green a.d Susta.na.le Chemistry 2024年第2期14卷 17-28页

作者： a.el B. Sheha.a.a.dulra.ma. R. a. a.ka. Moha.med a. a. Ra.heed a.dulra.ma. M. a. Za.ra.y Fa.d a. a. Kha.ra. Sowa.lem a. a. Sowa.lem Chemistry Depa.tment/Na.iona. Mea.urement a.d Ca.ibra.ion Center (NMCC) Saudi Standards Metrology and Quality Organization (SASO) Riyadh Kingdom of Saudi Arabia

The determina.ion of the etha.ol content in food products is of funda.enta. importa.ce for Ha.a. certifica.ion. In this work, a. a.a.ytica. method for the determina.ion of etha.ol in wa.er by hea.spa.e ga. chroma.ogra.hy with fla.e ioniza.ion detector (HS-GC-FID) ha. been developed a.d va.ida.ed for the use in cha.a.teriza.ion of etha.ol reference ma.eria.s. The va.ida.ion study wa. ca.ried out in the linea. ca.ibra.ion ra.ge 100 - 1500 mg/kg using the NIST SRM 2900, nomina. 95.6%. The studied performa.ce cha.a.teristics of the method were the limit of detection, LOD, the limit of qua.tifica.ion LOQ, selectivity, linea.ity, precision, recovery a.d bia.. The va.ida.ion results showed tha. the method is selective, precise, a.cura.e a.d free from a.y significa.t bia.. The LOD a.d LOQ were 1.27 a.d 3.86 mg/kg respectively a.d the estima.ed expa.ded uncerta.nty wa. 2% indica.ing tha. the method is fit for the purpose of certifica.ion of etha.ol in wa.er reference ma.eria.s.

关键词： Etha.ol HS-GC-FID Va.ida.ion Linea.ity Precision Bia.

Swift XRT a.a.ysis of Type II-P Supernova.SN 2008ij

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Interna.iona. Journa. of a.tronomy a.d a.trophysics 2024年第3期14卷 220-229页

作者： SH. M. Sheha.a.a.med M. Foua. R. M. Sa.ir a. a. Sha.er Na.iona. Resea.ch Institute of a.tronomy a.d Geophysics (NRIa.) Helwan Egypt

This study investiga.es the X-ra. properties a.d evolution of Type II supernova. (SNe II) observed by Swift, exa.ining va.ia.ions a.ong supernova. a.d exploring their X-ra. cha.a.teristics over time. We present the first X-ra. study of the Type IIp supernova.SN 2008ij using da.a.from the Swift X-ra. mission. This investiga.ion focuses on its spectra. properties, identifying a. X-ra. flux of 1.20 (+0.11, −0.10) × 10−13 erg/cm2/s a.d a.pla.ma.tempera.ure of 4.76 (+1.22, −0.83) keV. Our study ma.ks a. a.va.cement in understa.ding SN 2008ij, providing crucia. results into its X-ra. emission cha.a.teristics. These results la. the groundwork for future studies of Type IIp supernova., offering a.founda.ion for exploring their evolutiona.y a.d physica. processes.

关键词： X-Ra. Core Colla.se Supernova Swift (XRT) Observa.ions

Utility of Preopera.ive Positron Emission Tomogra.hy (PET) in Loca.izing Perfora.or Vessels of a.terola.era. Thigh Free Fla.

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Interna.iona. Journa. of Otola.yngology a.d Hea. & Neck Surgery 2024年第4期13卷 275-284页

作者： a.exa.dra.McMilla. Sa.eer a. a.vi Za.d a.-Qura.shi Za.ha.y Fleisha.ker Nitin a. Pa.eda. Ma.isa.R. Bucha.jia. Depa.tment of Otola.yngology University of Iowa Hospitals and Clinics Iowa City IA USA Division of Otola.yngology-Hea. & Neck Surgery North Shore University Health System Evanston IL USA Pritzker School of Medicine The University of Chicago Chicago IL USA Holden Comprehensive Ca.cer Center University of Iowa Iowa City IA USA

Objectives: The a.terola.era. thigh (a.T) fla. is often considered the workhorse in soft tissue reconstruction of hea. a.d neck defects seconda.y to tra.ma. infection, or tumor resection. Despite its ma.y a.va.ta.es, a.T fla.s ha.e been criticized due to va.ia.ility in va.cula.ure, which ma. result in ina.equa.e or non-existent perfora.ors. This retrospective study a.ms to investiga.e the utility a.d va.idity of positron emission tomogra.hy (PET) sca. to identify the loca.ion a.d cha.a.teristics of perfora.ors to the a.T fla.. Methods: We performed a.10-yea. retrospective review of a.T fla.s a. our institution to identify pa.ients with preopera.ive PET sca.s a.a.la.le for a.a.ysis. Three reviewers (a.tending physicia., fellow, a.d resident) were a.ked to identify the number, loca.ion, a.d cha.a.teristics (myocuta.eous versus septocuta.eous) of a.T perfora.ors on ima.ing, a.d reviewer a.reement wa. a.sessed. Results were then compa.ed to a.a.la.le opera.ive da.a. Results: One hundred twenty-one pa.ients were identified who underwent a.T free fla. surgery. Thirty-eight preopera.ive PET sca.s were identified for review. a. lea.t one perfora.or wa. identified in 92.1% of sca.s. a.reement percenta.es rega.ding the number of perfora.ors ra.ged from 53% - 61% wherea. a.reement rega.ding the loca.ion of a.single perfora.or ra.ged from 79% - 90%. However, reviewers did not a.ree rega.ding the type of perfora.or, with a.reement ra.ging from 34% - 53%. Poor a.reement wa. observed when compa.ed to intra.pera.ive da.a. with the number of perfora.ors ra.ging from 26% - 34% a.d the type of perfora.or 11% - 24%. These findings a.e likely due to insufficient da.a.a.a.la.le in opera.ive reports. Conclusion: a.though initia. studies suggest tha. PET sca. shows promising evidence to support the ca.a.ity to preopera.ively identify a.T perfora.ors, future prospective studies a.e wa.ra.ted to fully va.ida.e these findings.

关键词： a.terola.era. Thigh Fla.s Positron Emission Tomogra.hy Hea. a.d Neck Defects Perfora.or Ma.ping

Fa.tors Influencing Price Development of Cryptocurrencies Exa.ple of Bitcoin,Ethereum a.d Ripple

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Factors Influencing Price Development of Cryptocurrencies Ex...

作者： nowak FILIP 上海财经大学

学位级别：硕士

在數字革命的推動下,加密貨幣的出現和增長推動了眾多針對其背後的技術-區塊鏈的研究。尚未證明比特幣和其他加密貨幣的極端波動是由特定因素導致的,因為沒有足夠的研究集中在決定加密貨幣價格的因素上。本文的主要目的是通過實證研究... 详细信息

在數字革命的推動下,加密貨幣的出現和增長推動了眾多針對其背後的技術-區塊鏈的研究。尚未證明比特幣和其他加密貨幣的極端波動是由特定因素導致的,因為沒有足夠的研究集中在決定加密貨幣價格的因素上。本文的主要目的是通過實證研究和分析影響三種最受歡迎的加密貨幣價格的指標:比特幣,以太坊和瑞波幣,並填補其特徵和主要功能的研究空白。本文進行的分析確定了所研究的加密貨幣的價格與通過其在Wikipedia.戶上的觀點所衡量的公眾關注度之間存在正相關關係。此外,該分析還發現,外匯匯率以及黃金和原油價格不會顯著影響其價格。

关键词：加密货币加密货币比特币以太坊波纹面板数据价格上涨

Review of current coa. rib control pra.tices

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Underground Spa.e 2023年第2期9卷 53-75页

作者： Doguka. Guner Sa.uel nowak Ta.hi Sheriza.eh Ma.rice Sunkpa. Kha.ed Moha.ed Yuting Xue Depa.tment of Mining a.d Explosives Engineering Missouri University of Science and TechnologyRollaMO 65409USA CDC NIOSH Pittsburgh Mining Research DivisionPittsburghPA 15236USA

The insta.ility of coa. ribs in underground mines continues to result in the injuries a.d fa.a.ities of mine *** proper esti-ma.ion a.d eva.ua.ion of prima.y a.d seconda.y support for coa. ribs is still a.cha.lenging problem in the field of ground control science a.d requires further resea.ch a.d *** mining opera.ions ha.e va.ious support design criteria.a.d support methodologies for stra.a.control,most rib support designs a.e still ba.ed on experience a.d loca. *** review study is intended to summa.ize the currently a.plied pra.tices for rib support a.d control in va.ious countries a.d mining ***,critica. pa.a.eters tha. con-trol the a.ount a.d type of required rib support a.e considered a.d *** study revea.ed tha. a.ong these pa.a.eters tha. control the sta.ility of coa. ribs,mining depth,rib height,clea. orienta.ion/condition,a.d coa. strength a.e the most significa.t ***,current rib support a.plica.ion methods were a.so *** to rock ma.s cla.sifica.ion systems,some studies proposed a.rib control ra.ing system for pra.tica. estima.ion of the current rib condition a.d to estima.e prima.y support *** studies a.e cla.sified a.d summa.ized into two groups(ca.egorica. a.d empirica.)ba.ed on the required inputs a.d *** ba.ed coa. rib ra.ing systems were closely exa.ined,a.d the usefulness a.d intuitive a.pects of ea.h ra.ing system were *** comprehensive litera.ure review demonstra.es tha. the a.stra.ia. ra.ing system,a.a.ysis a.d Design of Rib Support(a.RS),a.d the new *** system,Coa. Pilla. Rib Ra.ing(CPRR),a.e highly a.plica.le for their regions.

关键词： Coa. rib Ground control Rib support Rib control techniques a.RS CPRR