Molar mass
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The document discusses molar mass and stoichiometry. It explains that the molar mass of an element is the mass of one mole of that element in grams. The molar mass of a compound is determined by its chemical formula. As an example, one mole of water (H2O) has a molar mass of 18 grams, since it contains two hydrogen atoms with a molar mass of 1 gram each and one oxygen atom with a molar mass of 16 grams. Formulas are provided for converting between mass, moles, and number of atoms or molecules.
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To find the molar mass of an element, look up its atomic mass on the periodic table. For compounds, add up the molar masses of each element present according to the chemical formula, multiplying by the subscript if there is one. For example, the molar mass of NaCl is 58.5 g/mol, calculated from the molar masses of one Na atom and one Cl atom.
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This document defines key concepts related to moles including:
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- Molar mass is the mass of one mole of a substance and can be calculated by adding the molar masses of the elements in a compound multiplied by their mole ratios.
- Avogadro's number is the number of particles in one mole, which is approximately 6.022x1023.
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Masses of Atoms discusses measuring the mass of carbon and hydrogen atoms, with carbon having a greater mass. The mole is introduced as a more practical unit than individual atoms, being 6.02x10^23 particles known as Avogadro's number. Molar mass establishes that the mass of one mole of an element in grams is numerically equal to the mass number on the periodic table.
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The mole is a unit used in chemistry to measure the amount of a substance. It represents 6.02 x 1023 particles of anything. A mole is defined as the formula mass in grams of a substance. For example, the mass of one mole of chromium atoms is 51.9961 grams, which is equal to the mass of one atom in atomic mass units. The mole is a convenient unit for chemists because it allows them to relate the number of particles, formula mass, and molar mass of substances.
Mole Calculations Made Easy (old)
This document defines key concepts related to moles including:
- A mole is the amount of substance containing Avogadro's number of particles and has a mass in grams equal to the substance's molar mass.
- Molar mass is the mass of one mole of a substance and can be calculated by adding the molar masses of the elements in a compound multiplied by their mole ratios.
- Avogadro's number is the number of particles in one mole, which is approximately 6.022x1023.
- Examples are provided for mole calculations involving conversions between masses, particles, volumes, and moles.
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The document provides instructions on stoichiometry calculations using the decomposition of hydrogen peroxide as an example. It explains how to write and balance chemical equations, determine the mole ratios from coefficients, and use mole ratios to convert between amounts of reactants and products in moles, grams, and liters. Sample calculations are shown for determining moles, liters, and grams of reactants or products given amounts of other substances.
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This document discusses the mole concept in chemistry. A mole is the amount of a substance that contains 6.022x1023 elementary entities and can be used to quantify atoms, molecules, ions or other particles. The mass of a mole of a substance is equal to its molar mass in grams. Some examples given are that 1 mole of oxygen is 16 grams, 1 mole of carbon is 12 grams, and 1 mole of iron is 56 grams. The document also notes that Avogadro's number, which is 6.022x1023, is defined as the number of elementary entities in 1 mole of a substance.
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- Avogadro's number is the number of particles in one mole, which is approximately 6.022x1023.
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Masses of Atoms discusses measuring the mass of carbon and hydrogen atoms, with carbon having a greater mass. The mole is introduced as a more practical unit than individual atoms, being 6.02x10^23 particles known as Avogadro's number. Molar mass establishes that the mass of one mole of an element in grams is numerically equal to the mass number on the periodic table.
mole concept
The mole is a unit used in chemistry to measure the amount of a substance. It represents 6.02 x 1023 particles of anything. A mole is defined as the formula mass in grams of a substance. For example, the mass of one mole of chromium atoms is 51.9961 grams, which is equal to the mass of one atom in atomic mass units. The mole is a convenient unit for chemists because it allows them to relate the number of particles, formula mass, and molar mass of substances.
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This document defines key concepts related to moles including:
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- Molar mass is the mass of one mole of a substance and can be calculated by adding the molar masses of the elements in a compound multiplied by their mole ratios.
- Avogadro's number is the number of particles in one mole, which is approximately 6.022x1023.
- Examples are provided for mole calculations involving conversions between masses, particles, volumes, and moles.
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The document provides instructions on stoichiometry calculations using the decomposition of hydrogen peroxide as an example. It explains how to write and balance chemical equations, determine the mole ratios from coefficients, and use mole ratios to convert between amounts of reactants and products in moles, grams, and liters. Sample calculations are shown for determining moles, liters, and grams of reactants or products given amounts of other substances.
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This document discusses the mole concept in chemistry. A mole is the amount of a substance that contains 6.022x1023 elementary entities and can be used to quantify atoms, molecules, ions or other particles. The mass of a mole of a substance is equal to its molar mass in grams. Some examples given are that 1 mole of oxygen is 16 grams, 1 mole of carbon is 12 grams, and 1 mole of iron is 56 grams. The document also notes that Avogadro's number, which is 6.022x1023, is defined as the number of elementary entities in 1 mole of a substance.
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The document defines key concepts regarding moles, molar mass, and concentration calculations:
- A mole is the amount of substance containing 6.02x10^23 elementary units like atoms or molecules, and refers to the number of atoms/molecules in exactly 12 grams of carbon-12.
- Molar mass is the mass of one mole of a substance in grams and allows conversion between mass and moles using the formula mass (g) = moles x molar mass (g/mol).
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2. One mole contains 6.02 x 10^23 particles and is equal to the substance's molar mass in grams.
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The document discusses the concept of the mole in chemistry. It defines a mole as 6.02 x 1023 representative particles, which can be atoms, molecules, or formula units. It provides examples of calculating the number of moles and mass of different substances. It also explains that 1 mole of any gas occupies 22.4 liters at standard temperature and pressure. Key terms discussed include molar mass, percent composition, empirical formula, and molecular formula.
Chemistry unit 9 presentation
The correct formula for an ionic compound must contain positive and negative ions in a ratio to achieve an overall neutral charge. CO2 is a molecular compound and does not contain ions, so the answer is A.
Empirical and Molecular
The document contains examples and explanations of concepts related to chemistry calculations including:
- Percentage composition problems calculating the percent by mass of elements in compounds.
- Empirical formula problems finding the lowest whole number ratio of atoms in a compound from percentage or mole composition data.
- Molecular formula problems relating the empirical formula to molar mass to determine the actual formula.
- Hydrate problems using the formula for hydrated compounds to determine the amount of water bonded in the crystal structure from percentage or mass composition data.
Chemical reactions and stoichiometry
Triethylene glycol.
Chemical equation quantitatively relates atomic and formula masses, chemical formulas
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Total charge, potential difference,
The document discusses total charge, potential difference, and potential energy stored. Total charge refers to the total amount of positive or negative charge on two charged objects or surfaces. Potential difference is the difference in electric potential between two points in space, usually measured in volts. Potential energy stored is the energy stored in an electric field due to the separation of positive and negative charges.
Active transport
Active transport is the movement of molecules or ions across a cell membrane against a concentration gradient using energy in the form of ATP. This process requires energy because it moves molecules from an area of lower concentration to higher concentration against the natural diffusion gradient. Active transport is used by cells to maintain appropriate ion concentrations and transport nutrients and other molecules into and out of cells.
Passive transport
Passive transport is the movement of molecules across a biological membrane without the use of energy. There are two main types of passive transport: simple diffusion, where molecules move from an area of higher concentration to lower concentration through the membrane; and facilitated diffusion, where carrier proteins in the membrane help transport specific molecules across. Both simple and facilitated diffusion allow molecules to pass through membranes down their concentration gradients without the use of cellular energy.
Fashion styling
Nikki Simporios provides information about fashion styling courses. She discusses different fashion styles including normcore, classic, athletic, nugoth, and cyber styles. The document explains what defines each style in terms of aesthetics and clothing. It also provides instructions for an activity where students are asked to dress in the different styles at home, take photos of their looks, and post them on social media with relevant hashtags to be graded by the instructor.
Additional Notes: Cell theory
The document discusses key aspects of cell theory including that all organisms are composed of cells, cells are the smallest living things, and cells only arise from pre-existing cells. It then covers differences between prokaryotic and eukaryotic cells, describing their structures such as the nucleus, cell membrane, and organelles. Specific organelles like mitochondria, chloroplasts, and the endomembrane system are explained in more detail. The cytoskeleton and means of cell movement are also summarized.
Electric fields and forces
Electric fields and forces arise from the interaction of charged objects. Charged objects exert forces on other charged objects without touching. The strength of the electric force depends on the magnitude of the charges and the distance between them.
Electric charge
Electrons can be transferred between objects due to their differing electron affinities. Charging by friction occurs when electrons are transferred between two rubbing objects, such as between hair and a rubber balloon. This leaves both objects with an imbalance of charge - the hair loses electrons and becomes positively charged, attracting the now negatively charged balloon. Charging by induction can also occur when a charged object is brought near a conductor without touching, inducing a charge in the conductor through their interaction.
Cell theory
The cell is the basic unit of all living organisms. Robert Hooke first discovered cells in 1665 while viewing cork under a microscope and noticed compartments resembling cells. Anton van Leeuwenhoek later invented an improved microscope and was able to study living cells. The collective work of scientists in the following years led to the formulation of the cell theory, which states that all organisms are composed of one or more cells, cells are the basic unit of structure and function of all living things, and new cells are produced from existing cells.
Carbon chemistry
This document discusses carbon chemistry and the forms and bonding of carbon. It notes that carbon is the foundation of life and many materials due to its ability to form strong covalent bonds. Carbon can exist in several allotropes including graphite, diamonds, fullerenes, and amorphous forms. Hydrocarbons are organic compounds made of carbon and hydrogen that can be saturated or unsaturated. Saturated hydrocarbons contain only single bonds while unsaturated ones contain double or triple bonds. Naming hydrocarbon compounds involves identifying the parent chain and any substituents or functional groups.
The Periodic Table
The periodic table arranges elements by atomic number and recurring properties. It contains 18 groups and 7 periods. Groups 1-2 and 13-18 are representative elements including alkali metals, alkaline earth metals, and noble gases. Groups 3-12 are transition metals. The document discusses common properties of several groups including alkali metals, alkaline earth metals, transition metals, and halogens. It also covers valence electrons, atomic radius, ionization energy, electron affinity, and electronegativity trends in the periodic table.
Types of chemical reaction
Combustion, combination, decomposition, single replacement, and double replacement reactions are the main types of chemical reactions. Combustion reactions involve oxygen reacting with another element or compound to produce heat and light. Combination reactions involve two or more reactants combining to form a single product. Decomposition reactions involve a single compound breaking down into multiple products. Single replacement reactions involve one element replacing another in a compound. Double replacement reactions involve two compounds exchanging ions or bonds to form different compounds.
Chemical reaction
Chemical reactions involve reactants changing into products. A chemical equation represents this process symbolically, with reactants on the left side of the equation and products on the right side. For example, in the reaction of hydrogen and oxygen gases to form water, hydrogen and oxygen are the reactants and water is the product. Signs that a chemical reaction has occurred include the production of light, gas, or precipitates, a change in temperature or color, or the presence of a new odor.
Water on earth
Most of the water on Earth is found in the oceans, which account for around 96.5% of the total water. While abundant, ocean water is salty and not suitable for drinking or irrigation. Only around 2.5% of Earth's water is freshwater, with about 1.2% available for human use. The majority of accessible freshwater is stored as ice in glaciers and polar ice caps, while a significant portion is in underground aquifers and freshwater lakes. Rivers, though a relatively small source, are critical for freshwater delivery around the world.
Energy
Energy from fossil fuels, geothermal, and hydroelectric power plants enables people to operate machines and accomplish tasks, but their use has environmental consequences. The use of fossil fuels significantly impacts the environment through air pollution, greenhouse effects, and land changes. Reducing energy consumption from fossil fuels through conservation and efficiency can help address these concerns. Renewable energy sources like geothermal and hydroelectric also have less emissions than fossil fuels but can still impact the environment if not properly planned. Assessing impacts and reducing demand can help limit new power plant construction and their environmental effects.
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MICROBIAL INTERACTION PPT/ MICROBIAL INTERACTION AND THEIR TYPES // PLANT MIC...
MICROBIAL INTERACTION PPT/ MICROBIAL INTERACTION AND THEIR TYPES // PLANT MIC...ABHISHEK SONI NIMT INSTITUTE OF MEDICAL AND PARAMEDCIAL SCIENCES , GOVT PG COLLEGE NOIDA
Microbial interaction
Microorganisms interacts with each other and can be physically associated with another organisms in a variety of ways.
One organism can be located on the surface of another organism as an ectobiont or located within another organism as endobiont.
Microbial interaction may be positive such as mutualism, proto-cooperation, commensalism or may be negative such as parasitism, predation or competition
Types of microbial interaction
Positive interaction: mutualism, proto-cooperation, commensalism
Negative interaction: Ammensalism (antagonism), parasitism, predation, competition
I. Mutualism:
It is defined as the relationship in which each organism in interaction gets benefits from association. It is an obligatory relationship in which mutualist and host are metabolically dependent on each other.
Mutualistic relationship is very specific where one member of association cannot be replaced by another species.
Mutualism require close physical contact between interacting organisms.
Relationship of mutualism allows organisms to exist in habitat that could not occupied by either species alone.
Mutualistic relationship between organisms allows them to act as a single organism.
Examples of mutualism:
i. Lichens:
Lichens are excellent example of mutualism.
They are the association of specific fungi and certain genus of algae. In lichen, fungal partner is called mycobiont and algal partner is called
II. Syntrophism:
It is an association in which the growth of one organism either depends on or improved by the substrate provided by another organism.
In syntrophism both organism in association gets benefits.
Compound A
Utilized by population 1
Compound B
Utilized by population 2
Compound C
utilized by both Population 1+2
Products
In this theoretical example of syntrophism, population 1 is able to utilize and metabolize compound A, forming compound B but cannot metabolize beyond compound B without co-operation of population 2. Population 2is unable to utilize compound A but it can metabolize compound B forming compound C. Then both population 1 and 2 are able to carry out metabolic reaction which leads to formation of end product that neither population could produce alone.
Examples of syntrophism:
i. Methanogenic ecosystem in sludge digester
Methane produced by methanogenic bacteria depends upon interspecies hydrogen transfer by other fermentative bacteria.
Anaerobic fermentative bacteria generate CO2 and H2 utilizing carbohydrates which is then utilized by methanogenic bacteria (Methanobacter) to produce methane.
ii. Lactobacillus arobinosus and Enterococcus faecalis:
In the minimal media, Lactobacillus arobinosus and Enterococcus faecalis are able to grow together but not alone.
The synergistic relationship between E. faecalis and L. arobinosus occurs in which E. faecalis require folic acid
Holsinger, Bruce W. - Music, body and desire in medieval culture [2001].pdf
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Signatures of wave erosion in Titan’s coasts
The shorelines of Titan’s hydrocarbon seas trace flooded erosional landforms such as river valleys; however, it isunclear whether coastal erosion has subsequently altered these shorelines. Spacecraft observations and theo-retical models suggest that wind may cause waves to form on Titan’s seas, potentially driving coastal erosion,but the observational evidence of waves is indirect, and the processes affecting shoreline evolution on Titanremain unknown. No widely accepted framework exists for using shoreline morphology to quantitatively dis-cern coastal erosion mechanisms, even on Earth, where the dominant mechanisms are known. We combinelandscape evolution models with measurements of shoreline shape on Earth to characterize how differentcoastal erosion mechanisms affect shoreline morphology. Applying this framework to Titan, we find that theshorelines of Titan’s seas are most consistent with flooded landscapes that subsequently have been eroded bywaves, rather than a uniform erosional process or no coastal erosion, particularly if wave growth saturates atfetch lengths of tens of kilometers.
Gadgets for management of stored product pests_Dr.UPR.pdf
Insectsplayamajorroleinthedeteriorationoffoodgrainscausingbothquantitativeandqualitativelosses
Wellprovedthatnogranariescanbefilledwithgrainswithoutinsectsastheharvestedproducecontainegg(or)larvae(or)pupae(or)adultinsectinthembecauseoffieldcarryoverinfestationwhichcannotbeavoidedindevelopingcountrieslikeIndia
Simpletechnologiesfortimelydetectionofinsectsinthestoredproduceandtherebyplantimelycontrolmeasures
Discovery of An Apparent Red, High-Velocity Type Ia Supernova at 𝐳 = 2.9 wi...
We present the JWST discovery of SN 2023adsy, a transient object located in a host galaxy JADES-GS
+
53.13485
−
27.82088
with a host spectroscopic redshift of
2.903
±
0.007
. The transient was identified in deep James Webb Space Telescope (JWST)/NIRCam imaging from the JWST Advanced Deep Extragalactic Survey (JADES) program. Photometric and spectroscopic followup with NIRCam and NIRSpec, respectively, confirm the redshift and yield UV-NIR light-curve, NIR color, and spectroscopic information all consistent with a Type Ia classification. Despite its classification as a likely SN Ia, SN 2023adsy is both fairly red (
�
(
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−
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)
∼
0.9
) despite a host galaxy with low-extinction and has a high Ca II velocity (
19
,
000
±
2
,
000
km/s) compared to the general population of SNe Ia. While these characteristics are consistent with some Ca-rich SNe Ia, particularly SN 2016hnk, SN 2023adsy is intrinsically brighter than the low-
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Ca-rich population. Although such an object is too red for any low-
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cosmological sample, we apply a fiducial standardization approach to SN 2023adsy and find that the SN 2023adsy luminosity distance measurement is in excellent agreement (
≲
1
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) with
Λ
CDM. Therefore unlike low-
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Ca-rich SNe Ia, SN 2023adsy is standardizable and gives no indication that SN Ia standardized luminosities change significantly with redshift. A larger sample of distant SNe Ia is required to determine if SN Ia population characteristics at high-
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truly diverge from their low-
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counterparts, and to confirm that standardized luminosities nevertheless remain constant with redshift.
Mites,Slug,Snail_Infesting agricultural crops.pdf
Order : Trombidiformes (Acarina) Class : Arachnida
Mites normally feed on the undersurface of the leaves but the symptoms are more easily seen on the uppersurface.
Tetranychids produce blotching (Spots) on the leaf-surface.
Tarsonemids and Eriophyids produce distortion (twist), puckering (Folds) or stunting (Short) of leaves.
Eriophyids produce distinct galls or blisters (fluid-filled sac in the outer layer)
Post translation modification by Suyash Garg
overview of PTM helps to the students who wants to clear their basics about it.
Evaluation and Identification of J'BaFofi the Giant Spider of Congo and Moke...
ABSTRACT
The J'BaFofi, or "Giant Spider," is a mainly legendary arachnid by reportedly inhabiting the dense rain forests of
the Congo. As despite numerous anecdotal accounts and cultural references, the scientific validation remains more elusive.
My study aims to proper evaluate the existence of the J'BaFofi through the analysis of historical reports,indigenous
testimonies and modern exploration efforts.
Methods of grain storage Structures in India.pdf
•Post-harvestlossesaccountforabout10%oftotalfoodgrainsduetounscientificstorage,insects,rodents,micro-organismsetc.,
•Totalfoodgrainproductioninindiais311milliontonnesandstorageis145mt.InIndia,annualstoragelosseshavebeenestimated14mtworthofRs.7,000croreinwhichinsectsaloneaccountfornearlyRs.1,300crores.
•InIndiaoutofthetotalproduction,about30%ismarketablesurplus
•Remaining70%isretainedandstoredbyfarmersforconsumption,seed,feed.Hence,growerneedstoragefacilitytoholdaportionofproducetosellwhenthemarketingpriceisfavourable
•TradersandCo-operativesatmarketcentresneedstoragestructurestoholdgrainswhenthetransportfacilityisinadequate
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SDSS1335+0728: The awakening of a ∼ 106M⊙ black hole⋆
Context. The early-type galaxy SDSS J133519.91+072807.4 (hereafter SDSS1335+0728), which had exhibited no prior optical variations during the preceding two decades, began showing significant nuclear variability in the Zwicky Transient Facility (ZTF) alert stream from December 2019 (as ZTF19acnskyy). This variability behaviour, coupled with the host-galaxy properties, suggests that SDSS1335+0728 hosts a ∼ 106M⊙ black hole (BH) that is currently in the process of ‘turning on’. Aims. We present a multi-wavelength photometric analysis and spectroscopic follow-up performed with the aim of better understanding the origin of the nuclear variations detected in SDSS1335+0728. Methods. We used archival photometry (from WISE, 2MASS, SDSS, GALEX, eROSITA) and spectroscopic data (from SDSS and LAMOST) to study the state of SDSS1335+0728 prior to December 2019, and new observations from Swift, SOAR/Goodman, VLT/X-shooter, and Keck/LRIS taken after its turn-on to characterise its current state. We analysed the variability of SDSS1335+0728 in the X-ray/UV/optical/mid-infrared range, modelled its spectral energy distribution prior to and after December 2019, and studied the evolution of its UV/optical spectra. Results. From our multi-wavelength photometric analysis, we find that: (a) since 2021, the UV flux (from Swift/UVOT observations) is four times brighter than the flux reported by GALEX in 2004; (b) since June 2022, the mid-infrared flux has risen more than two times, and the W1−W2 WISE colour has become redder; and (c) since February 2024, the source has begun showing X-ray emission. From our spectroscopic follow-up, we see that (i) the narrow emission line ratios are now consistent with a more energetic ionising continuum; (ii) broad emission lines are not detected; and (iii) the [OIII] line increased its flux ∼ 3.6 years after the first ZTF alert, which implies a relatively compact narrow-line-emitting region. Conclusions. We conclude that the variations observed in SDSS1335+0728 could be either explained by a ∼ 106M⊙ AGN that is just turning on or by an exotic tidal disruption event (TDE). If the former is true, SDSS1335+0728 is one of the strongest cases of an AGNobserved in the process of activating. If the latter were found to be the case, it would correspond to the longest and faintest TDE ever observed (or another class of still unknown nuclear transient). Future observations of SDSS1335+0728 are crucial to further understand its behaviour. Key words. galaxies: active– accretion, accretion discs– galaxies: individual: SDSS J133519.91+072807.4
Evidence of Jet Activity from the Secondary Black Hole in the OJ 287 Binary S...
Wereport the study of a huge optical intraday flare on 2021 November 12 at 2 a.m. UT in the blazar OJ287. In the binary black hole model, it is associated with an impact of the secondary black hole on the accretion disk of the primary. Our multifrequency observing campaign was set up to search for such a signature of the impact based on a prediction made 8 yr earlier. The first I-band results of the flare have already been reported by Kishore et al. (2024). Here we combine these data with our monitoring in the R-band. There is a big change in the R–I spectral index by 1.0 ±0.1 between the normal background and the flare, suggesting a new component of radiation. The polarization variation during the rise of the flare suggests the same. The limits on the source size place it most reasonably in the jet of the secondary BH. We then ask why we have not seen this phenomenon before. We show that OJ287 was never before observed with sufficient sensitivity on the night when the flare should have happened according to the binary model. We also study the probability that this flare is just an oversized example of intraday variability using the Krakow data set of intense monitoring between 2015 and 2023. We find that the occurrence of a flare of this size and rapidity is unlikely. In machine-readable Tables 1 and 2, we give the full orbit-linked historical light curve of OJ287 as well as the dense monitoring sample of Krakow.
Mapping the Growth of Supermassive Black Holes as a Function of Galaxy Stella...
The growth of supermassive black holes is strongly linked to their galaxies. It has been shown that the population
mean black hole accretion rate (BHAR) primarily correlates with the galaxy stellar mass (Må) and redshift for the
general galaxy population. This work aims to provide the best measurements of BHAR as a function of Må and
redshift over ranges of 109.5 < Må < 1012 Me and z < 4. We compile an unprecedentedly large sample with 8000
active galactic nuclei (AGNs) and 1.3 million normal galaxies from nine high-quality survey fields following a
wedding cake design. We further develop a semiparametric Bayesian method that can reasonably estimate BHAR
and the corresponding uncertainties, even for sparsely populated regions in the parameter space. BHAR is
constrained by X-ray surveys sampling the AGN accretion power and UV-to-infrared multiwavelength surveys
sampling the galaxy population. Our results can independently predict the X-ray luminosity function (XLF) from
the galaxy stellar mass function (SMF), and the prediction is consistent with the observed XLF. We also try adding
external constraints from the observed SMF and XLF. We further measure BHAR for star-forming and quiescent
galaxies and show that star-forming BHAR is generally larger than or at least comparable to the quiescent BHAR.
Unified Astronomy Thesaurus concepts: Supermassive black holes (1663); X-ray active galactic nuclei (2035);
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Explainable Deepfake Image/Video Detection
Presentation of our paper, "Towards Quantitative Evaluation of Explainable AI Methods for Deepfake Detection", by K. Tsigos, E. Apostolidis, S. Baxevanakis, S. Papadopoulos, V. Mezaris. Presented at the ACM Int. Workshop on Multimedia AI against Disinformation (MAD’24) of the ACM Int. Conf. on Multimedia Retrieval (ICMR’24), Thailand, June 2024. https://doi.org/10.1145/3643491.3660292 https://arxiv.org/abs/2404.18649
Software available at https://github.com/IDT-ITI/XAI-Deepfakes
一比一原版(macewan学位证书)加拿大麦科文大学毕业证如何办理
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留信网认证的作用:
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3:国家专业人才认证中心颁发入库证书
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22PH503 - Astronomy and Astrophysics - Unit 2 - Spectral Classification of Stars
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Discovery of An Apparent Red, High-Velocity Type Ia Supernova at 𝐳 = 2.9 wi...
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SDSS1335+0728: The awakening of a ∼ 106M⊙ black hole⋆
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Evidence of Jet Activity from the Secondary Black Hole in the OJ 287 Binary S...
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Molar mass
- 1. Molar Mass of Elements and Compounds STOICHIOMETRY
- 2. The molar mass of an element, expressed in grams, is the mass of one mole of an element. For example, one mole of carbon has a molar mass of 12 g. Aside from grams, the unit of molar mass can also be expressed in amu or grams per mole. The molar mass of a compound is determined by its formula. Let us take water, H2O, as an example. One mole of water has 2 hydrogen atoms and 1 oxygen atom. One mole of hydrogen gas has a molar mass of 1 gram and one mole of oxygen has a molar mass of 16 grams. Therefore, one mole of water has a molar mass of 18 grams.
- 3. In order to convert the mass of a given substance to number of moles, we can use this formula: In order to convert the number of moles to number of atoms, molecules or formula units, we use the formula
- 4. In order to convert the mass of a given substance to number of moles, we can use this formula: In order to convert the number of moles to number of atoms, molecules or formula units, we use the formula