Optically active compounds and their effect on and importance in biological systems

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Embark on a captivating exploration of the transformative power of biotechnology on economic prosperity and societal advancement in this illuminating presentation. Uncover the multifaceted impacts of biotech breakthroughs across diverse sectors, from bolstering agricultural yields to revolutionizing personalized medicine in healthcare. Delve deep into case studies and real-world examples illustrating how biotechnological innovations serve as catalysts for economic growth and sustainable development. This presentation offers a comprehensive analysis of the strategic imperatives driving the integration of biotechnology into global economies. Discover the pivotal role of public-private partnerships, regulatory frameworks, and investment incentives in fostering an ecosystem conducive to biotech innovation and entrepreneurship. Gain invaluable insights into emerging trends and market dynamics shaping the biotech landscape, from CRISPR gene editing to synthetic biology and beyond. Moreover, explore the ethical, social, and environmental implications inherent in the widespread adoption of biotechnological solutions. Learn how stakeholders navigate complex challenges such as intellectual property rights, biosecurity concerns, and equitable access to biotech advancements while maximizing their positive impact on communities worldwide. Whether you're a seasoned industry professional, an academic researcher, or a policymaker, this presentation promises to deepen your understanding of the pivotal role biotechnology plays in shaping our economic future. Join us on this enlightening journey at the intersection of science, economics, and innovation, and unlock the boundless potential of biotechnology to uplift societies and enhance quality of life on a global scale.

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Climate Change Impacts on Terrestrial and Aquatic Ecosystems.pptx

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Context. WASP-76 b has been a recurrent subject of study since the detection of a signature in high-resolution transit spectroscopy data indicating an asymmetry between the two limbs of the planet. The existence of this asymmetric signature has been confirmed by multiple studies, but its physical origin is still under debate. In addition, it contrasts with the absence of asymmetry reported in the infrared (IR) phase curve. Aims. We provide a more comprehensive dataset of WASP-76 b with the goal of drawing a complete view of the physical processes at work in this atmosphere. In particular, we attempt to reconcile visible high-resolution transit spectroscopy data and IR broadband phase curves. Methods. We gathered 3 phase curves, 20 occultations, and 6 transits for WASP-76 b in the visible with the CHEOPS space telescope. We also report the analysis of three unpublished sectors observed by the TESS space telescope (also in the visible), which represents 34 phase curves. Results. WASP-76 b displays an occultation of 260±11 and 152±10 ppm in TESS and CHEOPS bandpasses respectively. Depending on the composition assumed for the atmosphere and the data reduction used for the IR data, we derived geometric albedo estimates that range from 0.05 ± 0.023 to 0.146 ± 0.013 and from <0.13 to 0.189 ± 0.017 in the CHEOPS and TESS bandpasses, respectively. As expected from the IR phase curves, a low-order model of the phase curves does not yield any detectable asymmetry in the visible either. However, an empirical model allowing for sharper phase curve variations offers a hint of a flux excess before the occultation, with an amplitude of ∼40 ppm, an orbital offset of ∼−30◦ , and a width of ∼20◦ . We also constrained the orbital eccentricity of WASP-76 b to a value lower than 0.0067, with a 99.7% confidence level. This result contradicts earlier proposed scenarios aimed at explaining the asymmetry observed in high-resolution transit spectroscopy. Conclusions. In light of these findings, we hypothesise that WASP-76 b could have night-side clouds that extend predominantly towards its eastern limb. At this limb, the clouds would be associated with spherical droplets or spherically shaped aerosols of an unknown species, which would be responsible for a glory effect in the visible phase curves.

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TheCarringtoneventof1859hasbeenthestrongestsolarflareintheobservationalhistory.ItplaysacrucialroleinsheddinglightonthefrequencyandimpactsofthepastandfutureSolarEnergeticParticle(SEP)eventsonhumansocieties.WeaddresstheimpactoftheCarringtoneventbymeasuringtree‐ring14Cwithmultiplereplicationsfromhigh‐latitudelocationsaroundtheeventandbycomparingthemwithmid‐latitudemeasurements.Atransientoffsetin14Cfollowingtheeventisobservedwithhighstatisticalsignificance.Ourstate‐of‐the‐art14Cproductionandtransportmodeldoesnotreproducetheobservationalfinding,suggestingfeaturesbeyondpresentunderstanding.Particularly,ourobservationwouldrequirepartiallyfasttransportof14Cbetweenthestratosphereandtroposphereathighlatitudes.TheobservationisconsistentwiththepreviousfindingswiththeSEPeventsof774and993CEforwhichfasterintegrationof14Cintotreeringsisobservedathighlatitudes

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Theoretical predictions and observational data indicate a class of sub-Neptune exoplanets may have water-rich interiors covered by hydrogen-dominated atmospheres. Provided suitable climate conditions, such planets could host surface liquid oceans. Motivated by recent JWST observations of K2-18 b, we self-consistently model the photochemistry and potential detectability of biogenic sulfur gases in the atmospheres of temperate sub-Neptune waterworlds for the first time. On Earth today, organic sulfur compounds produced by marine biota are rapidly destroyed by photochemical processes before they can accumulate to significant levels. Domagal-Goldman et al. suggest that detectable biogenic sulfur signatures could emerge in Archean-like atmospheres with higher biological production or low UV flux. In this study, we explore biogenic sulfur across a wide range of biological fluxes and stellar UV environments. Critically, the main photochemical sinks are absent on the nightside of tidally locked planets. To address this, we further perform experiments with a 3D general circulation model and a 2D photochemical model (VULCAN 2D) to simulate the global distribution of biogenic gases to investigate their terminator concentrations as seen via transmission spectroscopy. Our models indicate that biogenic sulfur gases can rise to potentially detectable levels on hydrogen-rich water worlds, but only for enhanced global biosulfur flux (20 times modern Earth’s flux). We find that it is challenging to identify DMS at 3.4 μm where it strongly overlaps with CH4, whereas it is more plausible to detect DMS and companion byproducts, ethylene (C2H4) and ethane (C2H6), in the mid-infrared between 9 and 13 μm. Unified Astronomy Thesaurus concepts: Exoplanet atmospheres (487); Exoplanet

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From their humble beginnings in 1984, TED has grown into the world’s most powerful amplifier for speakers and thought-leaders to share their ideas. They have over 2,400 filmed talks (not including the 30,000+ TEDx videos) freely available online, and have hosted over 17,500 events around the world. With over one billion views in a year, it’s no wonder that so many speakers are looking to TED for ideas on how to share their message more effectively. The article “5 Public-Speaking Tips TED Gives Its Speakers”, by Carmine Gallo for Forbes, gives speakers five practical ways to connect with their audience, and effectively share their ideas on stage. Whether you are gearing up to get on a TED stage yourself, or just want to master the skills that so many of their speakers possess, these tips and quotes from Chris Anderson, the TED Talks Curator, will encourage you to make the most impactful impression on your audience. See the full article and more summaries like this on SpeakerHub here: https://speakerhub.com/blog/5-presentation-tips-ted-gives-its-speakers See the original article on Forbes here: http://www.forbes.com/forbes/welcome/?toURL=http://www.forbes.com/sites/carminegallo/2016/05/06/5-public-speaking-tips-ted-gives-its-speakers/&refURL=&referrer=#5c07a8221d9b

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