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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.
Recommended
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.
Hydroelectric Power Plants
There are three main types of hydroelectric power plants: impoundment, diversion, and pumped storage. Impoundment plants require reservoirs and control water release through dams and turbines. Diversion plants divert river portions through pipes to powerhouses, then return water to the river. Pumped storage plants operate like batteries by pumping water between upper and lower reservoirs. Hydroelectric energy provides renewable power but can impact habitats, migration, and livelihoods if not properly managed.
Acceleration Due to Gravity
Gravity causes all objects to accelerate towards Earth at 9.8 m/s^2. This acceleration is represented by the letter 'g' and refers to the rate at which the velocity of an object changes due to gravity. Near Earth's surface, gravity causes objects to pick up speed at a rate of about 9.8 meters per second for every second they fall.
Balancing chemical equations
Chemical equations use symbols to represent reactants and products, with subscripts showing the quantity of each element or compound involved in a chemical reaction. Balancing chemical equations ensures the same number and type of atoms are on both sides of the reaction arrow. Stoichiometry uses the balanced chemical equation to calculate quantities in chemical reactions.
Hydroelectric energy
Hydroelectric energy is produced by harnessing the kinetic energy of flowing or falling water. It utilizes water resources that naturally flow or fall from a height, such as rivers and waterfalls. Dams are built on rivers to increase water height and control water flow, channeling it through penstocks to turn turbines connected to electric generators. The movement of the turbines produces current in the generators which is transferred through power lines to transformers and distributed as electricity. Hydroelectric energy provides a renewable and widely used alternative energy source around the world.
Solving Quantities in equations: One – Dimensional Uniformly Accelerated Motion
A document discusses solving quantities in equations for one-dimensional uniformly accelerated motion. It provides samples of applying equations to motion problems but does not include the specific equations, variables, or values used in the samples. The document appears to be an introduction to solving kinematic equations for accelerated motion but does not include the key details in the examples.
Geothermal energy
Geothermal energy harnesses heat from within the Earth through underground reservoirs of hot water or steam, which can be used to generate electricity or heat buildings. It is produced in volcanic areas where molten rock heats groundwater. Power plants extract steam to turn turbines and generate electricity. The Philippines generates 27% of its electricity from geothermal energy due to its location along the Pacific Ring of Fire with abundant volcanic activity providing geothermal reservoirs.
Displacement and Velocity (velocity v.s. time and acceleration v.s. time curves)
Displacement and Velocity (velocity v.s. time and acceleration v.s. time curves)MarkNicholzSimporios
This document discusses key concepts in kinematics including displacement, velocity, acceleration, and how they relate to each other and can be represented graphically. It defines displacement as a change in position, velocity as the rate of change of position, and explains how to calculate displacement using velocity and time. It also describes different types of graphs used in kinematics such as velocity vs. time graphs, acceleration vs. time graphs, and position vs. time graphs and how to interpret features of these graphs like slope, area under curves, and curvature to determine properties of an object's motion like velocity and acceleration.Molar mass
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.
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)
Sexuality - Issues, Attitude and Behaviour - Applied Social Psychology - Psyc...
A proprietary approach developed by bringing together the best of learning theories from Psychology, design principles from the world of visualization, and pedagogical methods from over a decade of training experience, that enables you to: Learn better, faster!
More Related Content
More from MarkNicholzSimporios
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.
Hydroelectric Power Plants
There are three main types of hydroelectric power plants: impoundment, diversion, and pumped storage. Impoundment plants require reservoirs and control water release through dams and turbines. Diversion plants divert river portions through pipes to powerhouses, then return water to the river. Pumped storage plants operate like batteries by pumping water between upper and lower reservoirs. Hydroelectric energy provides renewable power but can impact habitats, migration, and livelihoods if not properly managed.
Acceleration Due to Gravity
Gravity causes all objects to accelerate towards Earth at 9.8 m/s^2. This acceleration is represented by the letter 'g' and refers to the rate at which the velocity of an object changes due to gravity. Near Earth's surface, gravity causes objects to pick up speed at a rate of about 9.8 meters per second for every second they fall.
Balancing chemical equations
Chemical equations use symbols to represent reactants and products, with subscripts showing the quantity of each element or compound involved in a chemical reaction. Balancing chemical equations ensures the same number and type of atoms are on both sides of the reaction arrow. Stoichiometry uses the balanced chemical equation to calculate quantities in chemical reactions.
Hydroelectric energy
Hydroelectric energy is produced by harnessing the kinetic energy of flowing or falling water. It utilizes water resources that naturally flow or fall from a height, such as rivers and waterfalls. Dams are built on rivers to increase water height and control water flow, channeling it through penstocks to turn turbines connected to electric generators. The movement of the turbines produces current in the generators which is transferred through power lines to transformers and distributed as electricity. Hydroelectric energy provides a renewable and widely used alternative energy source around the world.
Solving Quantities in equations: One – Dimensional Uniformly Accelerated Motion
A document discusses solving quantities in equations for one-dimensional uniformly accelerated motion. It provides samples of applying equations to motion problems but does not include the specific equations, variables, or values used in the samples. The document appears to be an introduction to solving kinematic equations for accelerated motion but does not include the key details in the examples.
Geothermal energy
Geothermal energy harnesses heat from within the Earth through underground reservoirs of hot water or steam, which can be used to generate electricity or heat buildings. It is produced in volcanic areas where molten rock heats groundwater. Power plants extract steam to turn turbines and generate electricity. The Philippines generates 27% of its electricity from geothermal energy due to its location along the Pacific Ring of Fire with abundant volcanic activity providing geothermal reservoirs.
Displacement and Velocity (velocity v.s. time and acceleration v.s. time curves)
Displacement and Velocity (velocity v.s. time and acceleration v.s. time curves)MarkNicholzSimporios
This document discusses key concepts in kinematics including displacement, velocity, acceleration, and how they relate to each other and can be represented graphically. It defines displacement as a change in position, velocity as the rate of change of position, and explains how to calculate displacement using velocity and time. It also describes different types of graphs used in kinematics such as velocity vs. time graphs, acceleration vs. time graphs, and position vs. time graphs and how to interpret features of these graphs like slope, area under curves, and curvature to determine properties of an object's motion like velocity and acceleration.Molar mass
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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Solving Quantities in equations: One – Dimensional Uniformly Accelerated Motion
Solving Quantities in equations: One – Dimensional Uniformly Accelerated Motion
Displacement and Velocity (velocity v.s. time and acceleration v.s. time curves)
Displacement and Velocity (velocity v.s. time and acceleration v.s. time curves)
Recently uploaded
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)
Sexuality - Issues, Attitude and Behaviour - Applied Social Psychology - Psyc...
A proprietary approach developed by bringing together the best of learning theories from Psychology, design principles from the world of visualization, and pedagogical methods from over a decade of training experience, that enables you to: Learn better, faster!
一比一原版美国佩斯大学毕业证如何办理
原版一模一样【微信：741003700 】【美国佩斯大学毕业证成绩单】【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
办理美国佩斯大学毕业证【微信：741003700 】外观非常简单，由纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理美国佩斯大学毕业证【微信：741003700 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
校名:学校英文全称
授予学位：本部分将注明获得的具体学位名称。
毕业生姓名：这是最重要的信息之一，标志着该证书是由特定人员获得的。
颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理美国佩斯大学毕业证【微信：741003700 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
综上所述，办理美国佩斯大学毕业证【微信：741003700 】是证明身份和学历的高价值文件。外观简单庄重，格式统一，包括重要的个人信息和发布日期。对持有人来说，妥善保管是非常重要的。
Quality assurance B.pharm 6th semester BP606T UNIT 5
Warehousing
Good warehousing practices
Material management
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
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
JAMES WEBB STUDY THE MASSIVE BLACK HOLE SEEDS
The pathway(s) to seeding the massive black holes (MBHs) that exist at the heart of galaxies in the present and distant Universe remains an unsolved problem. Here we categorise, describe and quantitatively discuss the formation pathways of both light and heavy seeds. We emphasise that the most recent computational models suggest that rather than a bimodal-like mass spectrum between light and heavy seeds with light at one end and heavy at the other that instead a continuum exists. Light seeds being more ubiquitous and the heavier seeds becoming less and less abundant due the rarer environmental conditions required for their formation. We therefore examine the different mechanisms that give rise to different seed mass spectrums. We show how and why the mechanisms that produce the heaviest seeds are also among the rarest events in the Universe and are hence extremely unlikely to be the seeds for the vast majority of the MBH population. We quantify, within the limits of the current large uncertainties in the seeding processes, the expected number densities of the seed mass spectrum. We argue that light seeds must be at least 103 to 105 times more numerous than heavy seeds to explain the MBH population as a whole. Based on our current understanding of the seed population this makes heavy seeds (Mseed > 103 M⊙) a significantly more likely pathway given that heavy seeds have an abundance pattern than is close to and likely in excess of 10−4 compared to light seeds. Finally, we examine the current state-of-the-art in numerical calculations and recent observations and plot a path forward for near-future advances in both domains.
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.
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Recent theoretical progress indicates that spacetime and gravity emerge together from the entanglement structure of an underlying microscopic theory. These ideas are best understood in Anti-de Sitter space, where they rely on the area law for entanglement entropy. The extension to de Sitter space requires taking into account the entropy and temperature associated with the cosmological horizon. Using insights from string theory, black hole physics and quantum information theory we argue that the positive dark energy leads to a thermal volume law contribution to the entropy that overtakes the area law precisely at the cosmological horizon. Due to the competition between area and volume law entanglement the microscopic de Sitter states do not thermalise at sub-Hubble scales: they exhibit memory effects in the form of an entropy displacement caused by matter. The emergent laws of gravity contain an additional ‘dark’ gravitational force describing the ‘elastic’ response due to the entropy displacement. We derive an estimate of the strength of this extra force in terms of the baryonic mass, Newton’s constant and the Hubble acceleration scale a0 = cH0, and provide evidence for the fact that this additional ‘dark gravity force’ explains the observed phenomena in galaxies and clusters currently attributed to dark matter.
TOPIC OF DISCUSSION: CENTRIFUGATION SLIDESHARE.pptx
Centrifugation is a powerful technique used in laboratories to separate components of a heterogeneous mixture based on their density. This process utilizes centrifugal force to rapidly spin samples, causing denser particles to migrate outward more quickly than lighter ones. As a result, distinct layers form within the sample tube, allowing for easy isolation and purification of target substances.
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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
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Unified Astronomy Thesaurus concepts: Supermassive black holes (1663); X-ray active galactic nuclei (2035);
Galaxies (573)
Post translation modification by Suyash Garg
overview of PTM helps to the students who wants to clear their basics about it.
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