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<div id="i0dwas" style="box-sizing: border-box; padding: 10px; text-align: right; font-family: Georgia, serif;">14 de abril de 2021. Año 3, N°2</div>
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<td id="imrh4f" style="box-sizing: border-box; font-size: 12px; font-weight: 300; vertical-align: top; color: #6f777d; margin: 0; padding: 0; width: 70%;" valign="top" width="70%">
<h1 class="heading" style="box-sizing: border-box; margin: 8px 0 5px 5px; font-family: Tahoma, Geneva, sans-serif; font-size: 12px; color: #000000; line-height: 13px; padding: 0 0 0 0; font-weight: bold; width: auto; text-align: left;">Ecos de <em style="box-sizing: border-box;">nueva física</em> en la rotación del muón</h1>
<a id="i64xo6" style="box-sizing: border-box; color: #3b97e3;" href="https://www.youtube.com/watch?v=V6hjzJm-jSY"></a>
<p class="paragraph" style="box-sizing: border-box; font-family: Trebuchet MS, Helvetica, sans-serif; margin: 4px 4px 4px 4px; width: auto; padding: 0 4px 0 5px; font-size: 13px; text-align: left; color: #000000; background-color: #ffffff;"><em style="box-sizing: border-box;">“Los muones han tambaleado más de lo esperado en un anillo magnetizado”, fue el anuncio que los físicos del Fermi National Accelerator Laboratory han hecho en estos días. Tres investigadores del DF explican el anuncio, los desafíos y dificultades que implica este acercamiento a lo que en la jerga se llama "nueva física", es decir, más allá del Modelo Estándar.</em> <br style="box-sizing: border-box;" /> </p>
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<div id="ix9rx6" style="box-sizing: border-box; padding: 10px;"><span style="box-sizing: border-box; color: #000000;"><span style="box-sizing: border-box; font-family: Tahoma,Geneva,sans-serif;"><strong style="box-sizing: border-box;">El experimento g-2 en Fermilab: la danza de las partículas virtuales</strong><br style="box-sizing: border-box;" /><br style="box-sizing: border-box;" />*Por Ricardo Piegaia <br style="box-sizing: border-box;" /><br style="box-sizing: border-box;" /><strong style="box-sizing: border-box;">Incertezas en las predicciones del modelo estándar</strong> <br style="box-sizing: border-box;" />*Por Rodolfo Sassot<br style="box-sizing: border-box;" /><br style="box-sizing: border-box;" /><strong style="box-sizing: border-box;">El muón nos indica el camino hacia nueva física</strong><br style="box-sizing: border-box;" /><br style="box-sizing: border-box;" /> *Por Daniel López - Fogliani </span></span></div>
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<td id="ie7cei" style="box-sizing: border-box; font-size: 12px; font-weight: 300; vertical-align: top; color: #6f777d; margin: 0; padding: 0 5px 0 5px; width: 30%;" valign="top" width="30%"><img id="iep2js" style="box-sizing: border-box; color: black; width: 100%; height: auto; margin: 7px 0 0 0;" src="https://df.uba.ar/images/newsletter/2021-1_0002_photo_bustamante.jpg" /></td>
<td id="iil8va" style="box-sizing: border-box; font-size: 12px; font-weight: 300; vertical-align: top; color: #6f777d; margin: 0; padding: 0 4px 0 4px; width: 70%;" valign="top" width="70%">
<h1 class="heading" style="box-sizing: border-box; margin: 8px 0 5px 5px; font-family: Tahoma, Geneva, sans-serif; font-size: 12px; color: #000000; line-height: 13px; padding: 0 0 0 0; font-weight: bold; width: auto; text-align: left;">Power at the Nanoscale. Speed, Strength and Efficiency in Biological Motors</h1>
<p class="paragraph" style="box-sizing: border-box; font-family: Trebuchet MS, Helvetica, sans-serif; margin: 4px 4px 4px 4px; width: auto; padding: 0 4px 0 5px; font-size: 13px; text-align: left; color: #000000; background-color: #ffffff;"><strong style="box-sizing: border-box;">Carlos Bustamante</strong> (University of California) <br style="box-sizing: border-box;" />Jueves 15 de abril, 14 hs. <br style="box-sizing: border-box;" /> <br style="box-sizing: border-box;" />I will describe some of our recent results in the study of the DNA packaging motor of bacteriophage Phi29, including its impressive thermodynamic efficiency. This is a feature that is common to many motors of biological origin. I will then speculate about the possible origin of this energetic efficiency based on recent results about energy dissipation. I will end by describing the impressive coordination among the different parts of the packaging motor using high-spatial resolution optical tweezers.</p>
<a id="idnw9g" style="box-sizing: border-box; color: #3b97e3; padding: 0 0 0 5px;" href="https://youtu.be/CFCiwkfFfY4">Transmisión en vivo </a></td>
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<td id="irq921" style="box-sizing: border-box; font-size: 12px; font-weight: 300; vertical-align: top; color: #6f777d; margin: 0; padding: 0 5px 0 5px; width: 30%;" valign="top" width="30%"><img id="ilq5tk" style="box-sizing: border-box; color: black; width: 95%; height: auto; margin: 7px 0 5px 0;" src="https://df.uba.ar/images/newsletter/2021/sin-titulo-2.png" /></td>
<td id="i9ifyh" style="box-sizing: border-box; font-size: 12px; font-weight: 300; vertical-align: top; color: #6f777d; margin: 0; padding: 0 4px 0 4px; width: 70%;" valign="top" width="70%">
<h1 class="heading" style="box-sizing: border-box; margin: 8px 0 5px 5px; font-family: Tahoma, Geneva, sans-serif; font-size: 12px; color: #000000; line-height: 13px; padding: 0 0 0 0; font-weight: bold; width: auto; text-align: left;"> Entropía de entrelazamiento y Teoría cuántica de Campos</h1>
<p class="paragraph" style="box-sizing: border-box; font-family: Trebuchet MS, Helvetica, sans-serif; margin: 4px 4px 4px 4px; width: auto; padding: 0 4px 0 5px; font-size: 13px; text-align: left; color: #000000; background-color: #ffffff;"><strong style="box-sizing: border-box;">Marina Huerta</strong> (Instituto Balseiro) <br style="box-sizing: border-box;" />Jueves 22 de abril, 14 hs. <br style="box-sizing: border-box;" /> <br style="box-sizing: border-box;" />La incorporación de la entropía de entrelazamiento, así como otras medidas de información, al conjunto de herramientas disponibles para la descripción de las teorías cuánticas de campos, resultó ser una estrategia atractiva y relevante en cuanto que no sólo provee nuevas tácticas de cálculo sino una enriquecida perspectiva de interpretación. Para ilustrar lo anterior, describiré dos problemas que a mi entender destacan la potencia de esta comunión: por un lado, la formulación de teoremas entrópicos sobre la irreversibilidad del flujo del grupo de renormalización y por otro, el rol de las simetrías, globales y locales, en las teorías cuánticas de campos.</p>
<a id="i7uwab" style="box-sizing: border-box; color: #3b97e3; padding: 0 0 0 5px;" href="https://youtu.be/7kSqGC7Jd0s">Transmisión en vivo</a></td>
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<h1 class="heading" style="box-sizing: border-box; margin: 8px 0 5px 5px; font-family: Tahoma, Geneva, sans-serif; font-size: 12px; color: #000000; line-height: 13px; padding: 0 0 0 0; font-weight: bold; width: auto; text-align: left;"><strong id="docs-internal-guid-6b101b35-7fff-61a7-016b-5cbbc20d9957" style="box-sizing: border-box;"> </strong>Increase of SRG modulation depth in azopolymers-nanoparticles hybrid materials</h1>
<p class="paragraph" style="box-sizing: border-box; font-family: Trebuchet MS, Helvetica, sans-serif; margin: 4px 4px 4px 4px; width: auto; padding: 0 4px 0 5px; font-size: 13px; text-align: left; color: #000000; background-color: #ffffff;"><em style="box-sizing: border-box;">R.Falcione, M.V.Roldan, N.Pellegri, S.Goyanes, S.A.Ledesma and M.G.Capeluto<br style="box-sizing: border-box;" /></em> <br style="box-sizing: border-box;" />Thin films of azopolymer-nanoparticles hybrid materials were fabricated with poly[1-[4-(3-carboxy-4-hydroxyphenylazo) benzenesulfonamido]-1,2-ethanediyl] (PAZO) and different concentrations of Ag and AgAu nanoparticles (NPs). By illuminating the films with polarized interference patterns, surface relief gratings (SRGs) were recorded. It was found that for some concentrations of NPs their modulations and diffraction efficiency were higher than the obtained for PAZO films without NPs. The effect was mainly explained by the increase of the free volume available for the photoisomerization for certain concentrations of NPs (...)</p>
<p dir="ltr" style="box-sizing: border-box; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt;"><span style="box-sizing: border-box; text-decoration-line: underline; font-size: 9pt; font-family: ' undefined: TrebuchetMS' color: #3b97e3; font-variant-numeric: normal; font-variant-east-asian: normal; text-decoration-skip-ink: none; vertical-align: baseline; white-space: pre-wrap;">Optical Materials 115 (2021)</span></p>
<div style="box-sizing: border-box;"><span style="box-sizing: border-box; text-decoration-line: underline; font-size: 9pt; font-family: ' undefined: TrebuchetMS' color: #3b97e3; font-variant-numeric: normal; font-variant-east-asian: normal; text-decoration-skip-ink: none; vertical-align: baseline; white-space: pre-wrap;"> </span></div>
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<h1 class="heading" style="box-sizing: border-box; margin: 8px 0 5px 5px; font-family: Tahoma, Geneva, sans-serif; font-size: 12px; color: #000000; line-height: 13px; padding: 0 0 0 0; font-weight: bold; width: auto; text-align: left;"><strong id="docs-internal-guid-6b101b35-7fff-61a7-016b-5cbbc20d9957" style="box-sizing: border-box;">Super-resolution Imaging of Energy Transfer by Intensity-Based STED-FRET </strong></h1>
<p class="paragraph" style="box-sizing: border-box; font-family: Trebuchet MS, Helvetica, sans-serif; margin: 4px 4px 4px 4px; width: auto; padding: 0 4px 0 5px; font-size: 13px; text-align: left; color: #000000; background-color: #ffffff;"><em style="box-sizing: border-box;">A. Szalai, B. Siarr, J. Lukin, S. Giusti, N. Unsain, A. Cáceres, F. Steiner, P.Tinnefeld, D. Refojo, T. Jovin and F. Stefani</em> <br style="box-sizing: border-box;" /> <br style="box-sizing: border-box;" />Förster resonance energy transfer (FRET) imaging methods provide unique insight into the spatial distribution of energy transfer and (bio)molecular interaction events, though they deliver average information for an ensemble of events included in a diffraction-limited volume. Coupling super-resolution fluorescence microscopy and FRET has been a challenging and elusive task (...)</p>
<p dir="ltr" style="box-sizing: border-box; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt;"><span style="box-sizing: border-box; text-decoration-line: underline; font-size: 9pt; font-family: ' undefined: TrebuchetMS' color: #3b97e3; font-variant-numeric: normal; font-variant-east-asian: normal; text-decoration-skip-ink: none; vertical-align: baseline; white-space: pre-wrap;">Nano Lett. 21, 5 (2021)</span></p>
<div style="box-sizing: border-box;"><span style="box-sizing: border-box; text-decoration-line: underline; font-size: 9pt; font-family: ' undefined: TrebuchetMS' color: #3b97e3; font-variant-numeric: normal; font-variant-east-asian: normal; text-decoration-skip-ink: none; vertical-align: baseline; white-space: pre-wrap;"> </span></div>
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<td id="iauyim" style="box-sizing: border-box; font-size: 12px; font-weight: 300; vertical-align: top; color: #6f777d; margin: 0; padding: 0 4px 0 4px; width: 70%;" valign="top" width="70%">
<h1 class="heading" style="box-sizing: border-box; margin: 8px 0 5px 5px; font-family: Tahoma, Geneva, sans-serif; font-size: 12px; color: #000000; line-height: 13px; padding: 0 0 0 0; font-weight: bold; width: auto; text-align: left;">Furry is required for cell movements during gastrulation and functionally interacts with NDR1</h1>
<p class="paragraph" style="box-sizing: border-box; font-family: Trebuchet MS, Helvetica, sans-serif; margin: 4px 4px 4px 4px; width: auto; padding: 0 4px 0 5px; font-size: 13px; text-align: left; color: #000000; background-color: #ffffff;"><em style="box-sizing: border-box;">A. Cervino, B. Moretti, C. Stuckenholz, H. Grecco, L. Davidson & M. Cirio<br style="box-sizing: border-box;" /></em> <br style="box-sizing: border-box;" />Gastrulation is a key event in animal embryogenesis during which germ layer precursors are rearranged and the embryonic axes are established. Cell polarization is essential during gastrulation, driving asymmetric cell division, cell movements, and cell shape changes. The furry (fry) gene encodes an evolutionarily conserved protein with a wide variety of cellular functions, including cell polarization and morphogenesis in invertebrates. However, little is known about its function in vertebrate development. Here, we show that in Xenopus, Fry plays a role in morphogenetic processes during gastrulation, in addition to its previously described function in the regulation of dorsal mesoderm gene expression (...)</p>
<a id="inxnra" style="box-sizing: border-box; color: #3b97e3;" href="https://www.nature.com/articles/s41598-021-86153-x#additional-information">Scientific Reports 11 (2021) </a></td>
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<h1 class="heading" style="box-sizing: border-box; margin: 8px 0 5px 5px; font-family: Tahoma, Geneva, sans-serif; font-size: 12px; color: #000000; line-height: 13px; padding: 0 0 0 0; font-weight: bold; width: auto; text-align: left;">Nuevo Laboratorio de enseñanza </h1>
<a id="ivxe6" style="box-sizing: border-box; color: #3b97e3;" href="https://www.youtube.com/watch?v=V6hjzJm-jSY"></a>
<p class="paragraph" style="box-sizing: border-box; font-family: Trebuchet MS, Helvetica, sans-serif; margin: 4px 4px 4px 4px; width: auto; padding: 0 4px 0 5px; font-size: 13px; text-align: left; color: #000000; background-color: #ffffff;">Concluyó la obra del nuevo Laboratorio 3, en el primer piso del Pabellón 1, integrado al resto de los espacios de enseñanza. Va a ser utilizado por estudiantes de Física, Biología, Química, Geología, Atmósfera, Paleontología, Oceanografía y los profesorados en las distintas materias que dicta el Departamento de Física. Gracias a años de trabajo el DF armó este laboratorio con equipamiento como osciloscopios, generadores de funciones, placas de adquisición, arduinos, etc.; asÍ como compononentes para hacer circuitos eléctricos y electrónicos que permiten trabajar en grupos pequeños de dos o tres estudiantes. </p>
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<td id="ioxsn6" style="box-sizing: border-box; font-size: 12px; font-weight: 300; vertical-align: top; color: #6f777d; margin: 0; padding: 0; width: 33.3333%; max-width: auto;" valign="top" width="33.3333%"><img id="i12tbr" style="box-sizing: border-box; color: black; width: 100%;" src="https://df.uba.ar/images/newsletter/2021/2__0002_dsc_9292.jpg" /></td>
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<div id="i40r4b" style="box-sizing: border-box; padding: 5px 2px 5px 8px; letter-spacing: 1px; font-family: Tahoma, Geneva, sans-serif; text-align: center; margin: 0 0 0 0; background-color: #aa6380;"><span style="box-sizing: border-box; color: #ffffff; font-family: 'Trebuchet MS', Helvetica, sans-serif;"> <span style="box-sizing: border-box; font-size: 12px;">EN LOS MEDIOS</span> </span></div>
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<td id="i35fu8" style="box-sizing: border-box; font-size: 12px; font-weight: 300; vertical-align: top; color: #6f777d; margin: 0; padding: 0; width: 5%;" valign="top" width="5%"><img id="i982vg" style="box-sizing: border-box; color: black; margin: 5px 3px 3px 2px;" src="https://df.uba.ar/images/newsletter/2021/2_a_0000_capa-3.jpg" /> <img id="ibruwb" style="box-sizing: border-box; color: black; margin: 3px 0 3px 2px;" src="https://df.uba.ar/images/newsletter/2021/2_a_0001_capa-2.jpg" /> <img id="i1so17" style="box-sizing: border-box; color: black; margin: 3px 3px 3px 2px;" src="https://df.uba.ar/images/newsletter/2021/2_a_0002_capa-1.jpg" /></td>
<td id="iwe42e" style="box-sizing: border-box; font-size: 12px; font-weight: 300; vertical-align: top; color: #6f777d; margin: 0; padding: 0; width: 70%;" valign="top" width="70%">
<h1 class="heading" style="box-sizing: border-box; margin: 8px 0 5px 5px; font-family: Tahoma, Geneva, sans-serif; font-size: 12px; color: #000000; line-height: 13px; padding: 0 0 0 0; font-weight: bold; width: auto; text-align: left;">Ricardo Piegaia sobre los anuncios del experimento Muon g−2 con Nora Bär</h1>
<a id="id0zp5" style="box-sizing: border-box; color: #3b97e3;" href="https://ar.radiocut.fm/audiocut/ricardo-piegaia-sobre-anuncios-del-experimento-muon-g-2/">Escuchar audio</a>
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<h1 class="heading" style="box-sizing: border-box; margin: 8px 0 5px 5px; font-family: Tahoma, Geneva, sans-serif; font-size: 12px; color: #000000; line-height: 13px; padding: 0 0 0 0; font-weight: bold; width: auto; text-align: left;">Ariel Chernomoretz sobre el diseño de software para esclarecer delitos</h1>
<p class="paragraph" style="box-sizing: border-box; font-family: Trebuchet MS, Helvetica, sans-serif; margin: 4px 4px 4px 4px; width: auto; padding: 0 4px 0 5px; font-size: 13px; text-align: left; color: #000000; background-color: #ffffff;">“Para nosotros, siempre resultó fundamental explicitar de manera transparente los criterios de diseño y funcionamiento, así como todos los algoritmos estadísticos desarrollados y utilizados en el sistema”.</p>
<a id="ieyz8n" style="box-sizing: border-box; color: #3b97e3;" href="https://www.agenciacyta.org.ar/2021/01/publican-el-diseno-de-un-software-argentino-para-esclarecer-delitos/">Leer más</a>
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<h1 class="heading" style="box-sizing: border-box; margin: 8px 0 5px 5px; font-family: Tahoma, Geneva, sans-serif; font-size: 12px; color: #000000; line-height: 13px; padding: 0 0 0 0; font-weight: bold; width: auto; text-align: left;">La ciencia del canto: Gabriel Mindlin en <em style="box-sizing: border-box;">La Liga de la Ciencia</em></h1>
<a id="i9bu7" style="box-sizing: border-box; color: #3b97e3; padding: 0 0 0 5px;" href="https://www.tvpublica.com.ar/post/la-ciencia-del-canto">Ver video</a></td>
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<div id="imdz7w" style="box-sizing: border-box; padding: 5px 2px 5px 8px; letter-spacing: 1px; font-family: Tahoma, Geneva, sans-serif; text-align: center; background-color: #5c6d93; margin: 0 0 0 0;"><span style="box-sizing: border-box; color: #ffffff; font-family: 'Trebuchet MS', Helvetica, sans-serif;"> <span style="box-sizing: border-box; font-size: 12px;">DE INTERÉS</span> </span></div>
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<h1 class="heading" style="box-sizing: border-box; margin: 8px 0 5px 5px; font-family: Tahoma, Geneva, sans-serif; font-size: 12px; color: #000000; line-height: 13px; padding: 0 0 0 0; font-weight: bold; width: auto; text-align: left;">Becas Sadosky</h1>
<p class="paragraph" style="box-sizing: border-box; font-family: Trebuchet MS, Helvetica, sans-serif; margin: 4px 4px 4px 4px; width: auto; padding: 0 4px 0 5px; font-size: 13px; text-align: left; color: #000000; background-color: #ffffff;">Las <strong style="box-sizing: border-box;">Sadosky</strong> son becas de ayuda económica dirigidas a estudiantes de grado de la Facultad. <br style="box-sizing: border-box;" />Son requisitos: contar con el Ciclo Básico Común (CBC) aprobado y ser estudiante regular de alguna carrera de grado de la Facultad. <br style="box-sizing: border-box;" /> <strong style="box-sizing: border-box;"><br style="box-sizing: border-box;" />INSCRIPCION</strong>: Desde el 5 al 19 de abril.</p>
<a id="iis5nh" style="box-sizing: border-box; color: #3b97e3;" href="https://exactas.uba.ar/becas-para-estudio/becas-sadosky/">Más información</a>
<h1 class="heading" style="box-sizing: border-box; margin: 8px 0 5px 5px; font-family: Tahoma, Geneva, sans-serif; font-size: 12px; color: #000000; line-height: 13px; padding: 0 0 0 0; font-weight: bold; width: auto; text-align: left;">ICTP-SAIFR Prize in Classical Gravity and Applications</h1>
<p class="paragraph" style="box-sizing: border-box; font-family: Trebuchet MS, Helvetica, sans-serif; margin: 4px 4px 4px 4px; width: auto; padding: 0 4px 0 5px; font-size: 13px; text-align: left; color: #000000; background-color: #ffffff;">This prize recognizes doctoral thesis research of outstanding quality and achievement in the area of classical gravity and its applications in gravitational wave physics, astrophysics and cosmology. The annual award consists of $1000 Brazilian reais, a certificate, and travel and local expenses to present an invited talk at the annual ICTP-SAIFR Workshop on Classical Gravity and Applications. <br style="box-sizing: border-box;" />Nominations (normally by the thesis advisor) will be accepted for any doctoral student (present or past) in any country in Latin America for work performed as part of the requirements for a doctoral degree. Nominees must have passed their thesis defense not more than 18 months before the <strong style="box-sizing: border-box;">nomination deadline of April 30</strong> (i.e. defended their thesis after October 31, 2019 and before April 30, 2021). An individual can be nominated only once; however, an unsuccessful candidate will be carried over for one year.</p>
<a id="ie1hyf" style="box-sizing: border-box; color: #3b97e3;" href="https://www.ictp-saifr.org/gravityprize/">Más información</a></td>
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<div id="il3bl" style="box-sizing: border-box; padding: 10px; text-align: center;"><span style="box-sizing: border-box; color: #dddddd;"><strong style="box-sizing: border-box;">Departamento de Física <br style="box-sizing: border-box;" /></strong>Facultad de Ciencias Exactas y Naturales<br style="box-sizing: border-box;" />Universidad de Buenos Aires<br style="box-sizing: border-box;" /><br style="box-sizing: border-box;" />df.uba.ar<br style="box-sizing: border-box;" /><br style="box-sizing: border-box;" /><strong style="box-sizing: border-box;">Área de comunicación <br style="box-sizing: border-box;" /></strong>listous@df.uba.ar</span></div>
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