Calcite Raman spectrum

•

0 likes•30 views

Source: Farsang, S., Facq, S. and Redfern, S.A., 2018. Raman modes of carbonate minerals as pressure and temperature gauges up to 6 GPa and 500 C. American Mineralogist: Journal of Earth and Planetary Materials, 103(12), pp.1988-1998.

Science

More from Stefan Farsang

Cerussite Raman spectrum

Stefan Farsang

Raman spectrum of calcite taken at ambient pressure (1 bar) and temperature (25˚C). From: Farsang, S., Facq, S. and Redfern, S.A.T., 2018. Raman modes of carbonate minerals as pressure and temperature gauges up to 6 GPa and 500 C. American Mineralogist: Journal of Earth and Planetary Materials, 103(12), pp.1988-1998 in Farsang, S., Widmer, R.N. and Redfern, S.A.T., 2020. High-pressure and high-temperature vibrational properties and anharmonicity of carbonate minerals up to 6 GPa and 500 ˚C by Raman spectroscopy. Under review at American Mineralogist.

Calcite Raman spectrum

Stefan Farsang

Raman spectrum of aragonite taken at ambient pressure (1 bar) and temperature (25˚C). From: Farsang, S., Facq, S. and Redfern, S.A.T., 2018. Raman modes of carbonate minerals as pressure and temperature gauges up to 6 GPa and 500 C. American Mineralogist: Journal of Earth and Planetary Materials, 103(12), pp.1988-1998 in Farsang, S., Widmer, R.N. and Redfern, S.A.T., 2020. High-pressure and high-temperature vibrational properties and anharmonicity of carbonate minerals up to 6 GPa and 500 ˚C by Raman spectroscopy. Under review at American Mineralogist.

Aragonite Raman spectrum

Stefan Farsang

Siderite Raman spectrum

Stefan Farsang

Rhodochrosite Raman spectrum

Stefan Farsang

Magnesite Raman spectrum

Stefan Farsang

Dolomite Raman spectrum

Stefan Farsang

Aragonite Raman spectrum

Stefan Farsang

FarsangEtAl_LPSC2015

Stefan Farsang

More from Stefan Farsang (9)

Cerussite Raman spectrum

Calcite Raman spectrum

Aragonite Raman spectrum

Siderite Raman spectrum

Rhodochrosite Raman spectrum

Magnesite Raman spectrum

Dolomite Raman spectrum

Aragonite Raman spectrum

FarsangEtAl_LPSC2015

Recently uploaded

In this work, we assess the potential detectability of solar panels made of silicon on an Earth-like exoplanet as a potential technosignature. Silicon-based photovoltaic cells have high reflectance in the UV-VIS and in the near-IR, within the wavelength range of a space-based flagship mission concept like the Habitable Worlds Observatory (HWO). Assuming that only solar energy is used to provide the 2022 human energy needs with a land cover of ∼ 2.4%, and projecting the future energy demand assuming various growth-rate scenarios, we assess the detectability with an 8 m HWO-like telescope. Assuming the most favorable viewing orientation, and focusing on the strong absorption edge in the ultraviolet-to-visible (0.34 − 0.52 µm), we find that several 100s of hours of observation time is needed to reach a SNR of 5 for an Earth-like planet around a Sun-like star at 10pc, even with a solar panel coverage of ∼ 23% land coverage of a future Earth. We discuss the necessity of concepts like Kardeshev Type I/II civilizations and Dyson spheres, which would aim to harness vast amounts of energy. Even with much larger populations than today, the total energy use of human civilization would be orders of magnitude below the threshold for causing direct thermal heating or reaching the scale of a Kardashev Type I civilization. Any extraterrrestrial civilization that likewise achieves sustainable population levels may also find a limit on its need to expand, which suggests that a galaxy-spanning civilization as imagined in the Fermi paradox may not exist.

Detectability of Solar Panels as a Technosignature

Sérgio Sacani

In recent years, the growth of scientific data and the increasing need for data sharing and collaboration in the field of environmental chemistry has led to the creation of various software and databases that facilitate research and development into the safety and toxicity of chemicals. The US-EPA Center for Computational Toxicology and Exposure has been developing software and databases that serve the chemistry community for many years. This presentation will focus on several web-based software applications which have been developed at the USEPA and made available to the community. While the primary software application from the Center is the CompTox Chemicals Dashboard almost a dozen proof-of-concept applications have been built serving various capabilities. The publicly accessible Cheminformatics Modules (https://www.epa.gov/chemicalresearch/cheminformatics) provides access to six individual modules to allow for hazard comparison for sets of chemicals, structure-substructure-similarity searching, structure alerts and batch QSAR prediction of both physicochemical and toxicity endpoints. A number of other applications in development include a chemical transformations database (ChET) and a database of analytical methods and open mass spectral data (AMOS). Each of these depends on the underlying DSSTox chemicals database, a rich source of chemistry data for over 1.2 million chemical substances. I will provide an overview of all tools in development and the integrated nature of the applications based on the underlying chemistry data. This abstract does not necessarily represent the views or policies of the U.S. Environmental Protection Agency.

Chemistry Data Delivery from the US-EPA Center for Computational Toxicology a...

US Environmental Protection Agency (EPA), Center for Computational Toxicology and Exposure

Presentation for the Most Influential Paper (MIP) award at the IEEE International Conference on Software Analysis, Evolution and Reengineering (SANER) 2024 Abstract: Existing defect prediction models use product or process metrics and machine learning methods to identify defect- prone source code entities. Different classifiers (e.g., linear regression, logistic regression, or classification trees) have been investigated in the last decade. The results achieved so far are sometimes contrasting and do not show a clear winner. In this paper we present an empirical study aiming at statistically analyzing the equivalence of different defect predictors. We also propose a combined approach, coined as CODEP (COmbined DEfect Predictor), that employs the classification provided by different machine learning techniques to improve the detection of defect-prone entities. The study was conducted on 10 open source software systems and in the context of cross-project defect prediction, that represents one of the main challenges in the defect prediction field. The statistical analysis of the results indicates that the investigated classifiers are not equivalent and they can complement each other. This is also confirmed by the superior prediction accuracy achieved by CODEP when compared to stand-alone defect predictors.

MIP Award presentation at the IEEE International Conference on Software Analy...

Annibale Panichella

family therapy psychotherapy types .pdf

haseebahmeddrama

Plasma proteins_ Dr.Muralinath_Dr.c. kalyan

muralinath2

The recently reported observation of VFTS 243 is the first example of a massive black-hole binary system with negligible binary interaction following black-hole formation. The black-hole mass (≈10M⊙) and near-circular orbit (e ≈ 0.02) of VFTS 243 suggest that the progenitor star experienced complete collapse, with energy-momentum being lost predominantly through neutrinos. VFTS 243 enables us to constrain the natal kick and neutrino-emission asymmetry during black-hole formation. At 68% confidence level, the natal kick velocity (mass decrement) is ≲10 km=s (≲1.0M⊙), with a full probability distribution that peaks when ≈0.3M⊙ were ejected, presumably in neutrinos, and the black hole experienced a natal kick of 4 km=s. The neutrino-emission asymmetry is ≲4%, with best fit values of ∼0–0.2%. Such a small neutrino natal kick accompanying black-hole formation is in agreement with theoretical predictions.

Constraints on Neutrino Natal Kicks from Black-Hole Binary VFTS 243

Sérgio Sacani

This edition of our Newsletter is a testament to our collective dedication and the exciting progress we’ve achieved. The completion of our first Periodic Report marks a significant milestone, and the advancements in tetrahedrite mineral-based thermoelectric materials are not just promising -they are a lap towards a sustainable future. We’re excited to share updates on our ongoing activities, our synergistic collaborations with the EHRASE cluster and THERMOS project, and insightful technical information on thermoelectric generators. But that’s not all, join us on the Consortium Tour, where this time SGUDS and IGME-CSIC take centre stage. Plus, don’t miss the insightful interview with Doug Crane from our Scientific Advisory Board, whose expertise enriches our understanding of thermoelectrics. This edition also features the fascinating adventures of Starty, exploring the practical uses of thermoelectric devices in a narrative that’s both educational and engaging. Looking ahead, we eagerly anticipate your visit to the START booth at the upcoming 40th International and 20th European Thermoelectric Conference, ICT/ECT 2024, in Krakow. We hope this Newsletter serves not only as a source of information but also as an inspiration for continued excellence. Stay connected with us for more exciting updates from START on our website and social media channels.

EU START PROJECT. START-Newsletter_Issue_4.pdf

Start Project

Soil and Water Conservation Engineering (SWCE) is a specialized field of stud...

yogeshlabana357357

GBSN - Microbiology (Unit 6) Human and Microbial interaction

Areesha Ahmad

Molecular and Cellular Mechanism of Action of Hormones such as Growth Hormone...

Ansari Aashif Raza Mohd Imtiyaz

Mars is a particularly attractive candidate among known astronomical objects to potentially host life. Results from space exploration missions have provided insights into Martian geochemistry that indicate oxychlorine species, particularly perchlorate, are ubiquitous features of the Martian geochemical landscape. Perchlorate presents potential obstacles for known forms of life due to its toxicity. However, it can also provide potential benefits, such as producing brines by deliquescence, like those thought to exist on present-day Mars. Here we show perchlorate brines support folding and catalysis of functional RNAs, while inactivating representative protein enzymes. Additionally, we show perchlorate and other oxychlorine species enable ribozyme functions, including homeostasis-like regulatory behavior and ribozyme-catalyzed chlorination of organic molecules. We suggest nucleic acids are uniquely wellsuited to hypersaline Martian environments. Furthermore, Martian near- or subsurface oxychlorine brines, and brines found in potential lifeforms, could provide a unique niche for biomolecular evolution.

Emergent ribozyme behaviors in oxychlorine brines indicate a unique niche for...

Sérgio Sacani

The thermal continuum emission observed from accreting black holes across X-ray bands has the potential to be leveraged as a powerful probe of the mass and spin of the central black hole. The vast majority of existing ‘continuum fitting’ models neglect emission sourced at and within the innermost stable circular orbit (ISCO) of the black hole. Numerical simulations, however, find non-zero emission sourced from these regions. In this work, we extend existing techniques by including the emission sourced from within the plunging region, utilizing new analytical models that reproduce the properties of numerical accretion simulations. We show that in general the neglected intra-ISCO emission produces a hot-and-small quasi-blackbody component, but can also produce a weak power-law tail for more extreme parameter regions. A similar hot-and-small blackbody component has been added in by hand in an ad hoc manner to previous analyses of X-ray binary spectra. We show that the X-ray spectrum of MAXI J1820+070 in a soft-state outburst is extremely well described by a full Kerr black hole disc, while conventional models that neglect intra-ISCO emission are unable to reproduce the data. We believe this represents the first robust detection of intra-ISCO emission in the literature, and allows additional constraints to be placed on the MAXI J1820 + 070 black hole spin which must be low a• < 0.5 to allow a detectable intra-ISCO region. Emission from within the ISCO is the dominant emission component in the MAXI J1820 + 070 spectrum between 6 and 10 keV, highlighting the necessity of including this region. Our continuum fitting model is made publicly available.

Continuum emission from within the plunging region of black hole discs

Sérgio Sacani

-case selection and treatment planing.pptx

mohamedturki866

Cyanobacteria (also known as blue-green algae) are ubiquitous photosynthetic microorganisms found in diverse habitats such as fresh water, marine water, moist rocks, etc. The photosynthetic mode of nutrition makes them significant global oxygen producers along with nitrogen-fixing ability of heterocyst and carbon sequestration. Some cyanobacterial species have the ability to perform a dual mode of nutritional procurement. This unique capability of cyanobacteria to utilize both organic (heterotrophic) and inorganic (autotrophic) carbon sources for energy production and growth is termed as mixotrophy which impart nutritional flexibility and competitive ability to them. Cyanobacterial mixotrophy provides the promising avenues in biotechnological applications such as wastewater treatment, bioremediation, pharmaceuticals, food supplements, biofertilizer, coloring agents, synthesis of bioactive compounds and as an agent for eco-friendly bio-fuels generation, etc Mixotrophically grown cyanobacteria, demonstrate significant potential for efficient and economical applications beyond their conventional agricultural application, thereby offering a versatile and impactful resource for future technological and environmental challenges.

mixotrophy in cyanobacteria: a dual nutritional strategy

MansiBishnoi1

There are two types of lymphocytes namely B-cells and T-cells, which are critical for the immune system. In addition, several accessory cells and effector cells also participate. The site of development and maturation of B-cells occurs in bursa fabricius in birds, and bone marrow in mammals. During the course of immune response. B-cells mature into plasma cells and secrete antibodies (immunoglobulins). The B-cells possess the capability to specifically recognize each antigen and produce antibodies (i.e. immunoglobulins) against it.

B lymphocytes, Receptors, Maturation and Activation

Bhanu Krishan

ManganesehasbeenobservedonMarsbytheNASACuriosityroverinavarietyofcontextsand isanimportantindicatorofredoxprocessesinhydrologicsystemsonEarth.WithintheMurrayformation,an ancientprimarilyfine‐grainedlacustrinesedimentarydeposit inGalecrater,Mars,haveobservedupto45× enrichmentinmanganeseandupto1.5×enrichmentinironwithincoarsergrainedbedrocktargetscomparedto themeanMurraysedimentcomposition.Thisenrichment inmanganesecoincideswiththetransitionbetween twostratigraphicunitswithintheMurray:SuttonIsland, interpretedasalakemarginenvironment,andBlunts Point,interpretedasalakeenvironment.OnEarth,lacustrineenvironmentsarecommonlocationsofmanganese precipitationduetohighlyoxidizingconditionsinthelakes.Here,weexplorethreemechanismsfor ferromanganeseoxideprecipitationatthislocation:authigenicprecipitationfromlakewateralongalakeshore, authigenicprecipitationfromreducedgroundwaterdischargingthroughporoussandsalongalakeshore,and earlydiageneticprecipitationfromgroundwaterthroughporoussands.All threescenariosrequirehighly oxidizingconditionsandwediscussoxidantsthatmayberesponsiblefortheoxidationandprecipitationof manganeseoxides.Thisworkhasimportant implicationsforthehabitabilityofMarstomicrobesthatcould haveusedMnredoxreactions,owingtoitsmultipleredoxstates,asanenergysourceformetabolism.

Manganese‐RichSandstonesasanIndicatorofAncientOxic LakeWaterConditionsinGale...

Sérgio Sacani

Biochemistry and Biomolecules - Science - 9th Grade by Slidesgo.pptx

jayabahari688

In-Pond Raceway Systems (IPRS) represent a cutting-edge method in pond aquaculture, effectively combining the advantages of confining fish in a restricted area within the pond with the efficiency of a flowing water system. This innovative approach facilitates water circulation within the pond, mimicking the natural flow found in riverine environments. By creating this dynamic water movement, IPRS significantly enhances the pond's productivity potential. The core principle of IPRS involves the installation of specific components that work in concert to circulate and refresh the water within the pond, all while preventing any discharge into the surrounding environment. This setup effectively utilizes a dividing partition, or baffle, to create a circular water flow pattern. As a result, the water undergoes continuous mixing and movement, optimizing conditions for fish growth and minimizing stagnation.

In-pond Race way systems for Aquaculture (IPRS).pptx

MAGOTI ERNEST

Tuberculosis (TB)-Notes.pdf microbiology notes

jyothisaisri

The Scientific names of some important families of Industrial plants .pdf

Mohamed Said

Recently uploaded (20)

Detectability of Solar Panels as a Technosignature

Chemistry Data Delivery from the US-EPA Center for Computational Toxicology a...

MIP Award presentation at the IEEE International Conference on Software Analy...

family therapy psychotherapy types .pdf

Plasma proteins_ Dr.Muralinath_Dr.c. kalyan

Constraints on Neutrino Natal Kicks from Black-Hole Binary VFTS 243

EU START PROJECT. START-Newsletter_Issue_4.pdf

Soil and Water Conservation Engineering (SWCE) is a specialized field of stud...

GBSN - Microbiology (Unit 6) Human and Microbial interaction

Molecular and Cellular Mechanism of Action of Hormones such as Growth Hormone...

Emergent ribozyme behaviors in oxychlorine brines indicate a unique niche for...

Continuum emission from within the plunging region of black hole discs

-case selection and treatment planing.pptx

mixotrophy in cyanobacteria: a dual nutritional strategy

B lymphocytes, Receptors, Maturation and Activation

Manganese‐RichSandstonesasanIndicatorofAncientOxic LakeWaterConditionsinGale...

Biochemistry and Biomolecules - Science - 9th Grade by Slidesgo.pptx

In-pond Race way systems for Aquaculture (IPRS).pptx

Tuberculosis (TB)-Notes.pdf microbiology notes

The Scientific names of some important families of Industrial plants .pdf

Calcite Raman spectrum

Recommended

Recommended

More Related Content

More from Stefan Farsang

More from Stefan Farsang (9)

Recently uploaded

Recently uploaded (20)