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The document summarizes an experiment conducted by Belgian and French students to understand why astronauts have trouble standing and walking when they return to Earth. The students measured their own weight while standing and then lying down to push against a vertical scale with their legs. They found their weight was lower when lying down due to gravity pulling less on their muscles in that position. The conclusion is that in space, astronauts' muscles don't need to work as hard against gravity and become weak, so when back on Earth they have trouble standing and walking until their muscles re-adapt to Earth's stronger gravity.
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Muscles
(1) Astronauts have trouble standing and walking when they return to Earth because their muscles have weakened in the low-gravity environment of space. (2) Without gravity, astronauts use their muscles less, causing their muscles to thin (atrophy) over time. (3) Two experiments showed that people weigh less when lying down compared to standing up, demonstrating how gravity affects muscle usage and strength.
Worksheet
This document contains worksheets from a physical education class focusing on athletics. It includes exercises for warm up, joint mobility, and stretching. It also details the student's performance in track and field events like the 800m, 1500m, and throwing events. Further worksheets provide results from jumping events and sprint times for the 200m, 100m, and 50m. The documents record the student's personal best times and marks.
Artistic gymnastics leah
This document provides an overview of women's artistic gymnastics, including its history, famous heroes, skills and levels, scoring, events, competitions, and a glossary of terms. It discusses how gymnastics started in ancient Greece and is now an Olympic sport. Key heroes mentioned are Nadia Comaneci, Mary Lou Retton, and Shawn Johnson. The four events in gymnastics are vault, uneven bars, balance beam, and floor exercise. Scoring is now based on a start value determined by the difficulty of skills in a routine.
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Sci Methodshortened
The document discusses the origins and development of the scientific method. It notes that Aristotle made observations and conclusions without testing his ideas experimentally. Galileo is considered the first true scientist because he tested Aristotle's idea that heavier objects fall faster by dropping balls of different weights from the same height, discovering they hit the ground at the same time. This showed the importance of experimentation over just thinking about ideas. The document then defines key aspects of experiments like variables and controls.
eTwinning biology balance 3WETc
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3) The Italian students observed that one participant stumbled a little after spinning with eyes closed but was able to walk straight after opening his eyes. He felt nausea when spinning with head tilted and eyes closed.
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Gymnastics is an individual sport that requires physical strength, flexibility, agility, coordination, balance and grace. It originated in Ancient Greece and has evolved over time with the introduction of new apparatus and standardized events and scoring systems. Modern gymnastics competitions feature events performed on equipment such as uneven bars, balance beam, vault, floor exercise, pommel horse, rings and parallel bars that evaluate skills, routines and precise execution.
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Muscles
(1) Astronauts have trouble standing and walking when they return to Earth because their muscles have weakened in the low-gravity environment of space. (2) Without gravity, astronauts use their muscles less, causing their muscles to thin (atrophy) over time. (3) Two experiments showed that people weigh less when lying down compared to standing up, demonstrating how gravity affects muscle usage and strength.
Worksheet
This document contains worksheets from a physical education class focusing on athletics. It includes exercises for warm up, joint mobility, and stretching. It also details the student's performance in track and field events like the 800m, 1500m, and throwing events. Further worksheets provide results from jumping events and sprint times for the 200m, 100m, and 50m. The documents record the student's personal best times and marks.
Artistic gymnastics leah
This document provides an overview of women's artistic gymnastics, including its history, famous heroes, skills and levels, scoring, events, competitions, and a glossary of terms. It discusses how gymnastics started in ancient Greece and is now an Olympic sport. Key heroes mentioned are Nadia Comaneci, Mary Lou Retton, and Shawn Johnson. The four events in gymnastics are vault, uneven bars, balance beam, and floor exercise. Scoring is now based on a start value determined by the difficulty of skills in a routine.
Law of Inertia and Frames of Reference
Powerpoint presentation created by Jan Parker for use in her 9th grade physics class. This powerpoint - and many more - can be purchased and downloaded for classroom use at: http://www.teacherspayteachers.com/Store/Jan-Parker/Products
Sci Methodshortened
The document discusses the origins and development of the scientific method. It notes that Aristotle made observations and conclusions without testing his ideas experimentally. Galileo is considered the first true scientist because he tested Aristotle's idea that heavier objects fall faster by dropping balls of different weights from the same height, discovering they hit the ground at the same time. This showed the importance of experimentation over just thinking about ideas. The document then defines key aspects of experiments like variables and controls.
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1) The document summarizes a biology experiment about balance and space sickness conducted by students in Belgium and Italy.
2) The experiments involved spinning participants and then having them try to stand or walk in a straight line. The Belgian students found it was difficult but not impossible to stand straight after spinning with eyes open or closed.
3) The Italian students observed that one participant stumbled a little after spinning with eyes closed but was able to walk straight after opening his eyes. He felt nausea when spinning with head tilted and eyes closed.
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Gymnastics is an individual sport that requires physical strength, flexibility, agility, coordination, balance and grace. It originated in Ancient Greece and has evolved over time with the introduction of new apparatus and standardized events and scoring systems. Modern gymnastics competitions feature events performed on equipment such as uneven bars, balance beam, vault, floor exercise, pommel horse, rings and parallel bars that evaluate skills, routines and precise execution.
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This document provides information about dance anatomy, common dance injuries, injury prevention techniques, and the skeletal and muscular systems. It discusses bones, muscle groups, and body systems involved in dance. Key topics covered include common dance injuries like sprains and strains; injury prevention strategies like proper warm up, cool down, and technique; and labeling bones and muscles on a skeleton diagram.
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Gymnastics powerpoint 2
Gymnastics originated from exercises performed naked in ancient Greece. Frederick Ludwig Jahn is considered the father of modern gymnastics, opening the first gymnasium in 1811. Gymnastics events for women include uneven bars, balance beam, vault, and floor exercise. For men, events are parallel bars, horizontal bar, pommel horse, rings, and floor. Gymnasts are judged on a scoring system where the highest and lowest scores are dropped. Competitions include team, all-around, and individual apparatus championships. Appearance and maintaining a youthful look is important in gymnastics. However, the sport also faces issues like eating disorders and abusive coaching.
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This document contains worksheets from a physical education class focusing on athletics. It includes exercises for warm up, stretching, and joint mobility. It also lists specific exercises that target different muscle groups. Additional worksheets track students' performance in track and field events like the 800m, 1500m, 200m, 100m, and 50m runs as well as throwing and jumping events. Times and distances are recorded for each attempt.
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This document discusses physical integrity and injury prevention for throwing events. It addresses common throwing injuries and mobility issues that can lead to them. Specific joints are identified as needing mobility or stability, and how tightness or weakness in certain muscles can impact posture, performance, and injury risk. Exercises are suggested to address mobility limitations that could hinder throwing technique or increase injuries, focusing on the shoulder, thoracic spine, and hip. Maintaining proper joint mobility and muscular balance is important for throwers to stay healthy, throw with more quality, and recover effectively.
Squat pages from acsm's foundations of strength training and conditioning
The document describes proper form and technique for performing barbell back squats. Key points include: holding the bar in a low-bar or high-bar position on the back, keeping the feet parallel and shoulder-width apart or wider, descending until the thighs are parallel to the ground, and ascending by extending the hips and knees. Common mistakes that should be avoided are allowing the knees to move too far forward, excessive leaning forward, and failing to perform the full range of motion. Variations include front squats, split squats, and single-leg squats.
TOTAL BODY STRENGTH WORKOUT
The document provides a full body workout routine that targets major muscle groups. It lists various exercises that work the legs, chest, back, shoulders, arms, abs, and lower back. For each exercise, the document includes spaces to record the weight used for sets of 12-20 repetitions over 2-3 sets. It recommends completing this full body workout 2-3 times per week for a total body strength training routine.
Proper Lifting Techniques
The document provides guidelines for proper lifting technique to avoid injury. It recommends checking that the load is not too heavy, warming up muscles first, keeping feet shoulder-width apart with one foot ahead of the load for balance. When lifting, bend the knees and keep the back straight using leg muscles rather than the back. Maintain a firm grip, keep the load close to the body, and move feet rather than twisting when changing direction. Lower the load slowly using leg muscles while keeping it close, and push loads onto shelves rather than lifting them overhead.
Multi Planar Training
This document discusses the importance of multi-planar training by addressing all three planes of movement: sagittal, frontal, and transverse. It provides examples of exercises that target each plane as well as circuits and progressions to incorporate multi-planar movements, especially important for the transverse plane which sees much sport movement but is often neglected. Plyometric training is also covered, emphasizing proper progression and technique to reduce injury risk while training multi-directional jumps and hops.
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Pp udl inroduction
- Universal design (UD) in architecture aims to make buildings and environments accessible to all by removing barriers rather than designing for the average user.
- UDL applies these UD principles to education by ensuring the learning environment (curriculum, materials, teaching) is accessible and beneficial to all students by considering diversity from the start of lesson planning rather than retrofitting afterwards.
- The UDL Guidelines provide a framework to help apply the three UDL principles of engagement, representation, and action and expression to educational practice through multiple means of representation, engagement, and expression.
Slope c
1. Students measured the weight of objects on horizontal surfaces and on slopes of varying degrees of inclination using kitchen and person balances.
2. They found that as the inclination of the slope increased, the measured weight decreased, with steeper slopes showing smaller weights.
3. The conclusion is that placing an object on a sloped surface decreases the measured weight, and weight decreases more with increased slope inclination as the force of gravity has more of a parallel component to the slope.
Spacesuit c
Two groups of students, one in Italy and one in Belgium, conducted experiments with space suits and aluminum foil. They tested how aluminum foil affects electromagnetic signals by calling phones with and without foil. They also dropped balls on surfaces with and without aluminum protection to see how foil reduces impact. The results showed that aluminum foil can stop electromagnetic radiation and lessen the size and depth of impacts when enough layers are used.
Elevator c
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Magnet ab
1) The document describes an experiment to investigate how the weight of a magnet changes when another magnet is brought near it.
2) When the magnets attract each other, the weight of the lower magnet decreases, and when they repel each other, the weight increases.
3) The Belgian and Italian schools that performed the experiment found similar results, though they used different distances.
Buoyancy c
1. The experiment measured how the buoyant force of different liquids affected the weight of objects by submerging a cube and nuts in distilled water, salt water, and oil and measuring the resultant force.
2. The results showed that the resultant force was always smaller than gravity, with salt water producing the greatest reduction in weight.
3. This demonstrated that salt water best simulates the lower gravity conditions on Mars out of the three liquids, as it most reduced the apparent weight of the objects.
Generating gravity ab
This document summarizes a student experiment to simulate gravity on a spacecraft. The experiment involved spinning glass tubes with attached masses to measure the time taken to make 10 revolutions. Heavier masses took less time to complete 10 revolutions than lighter masses. The results supported the theory that centrifugal force from spinning a spacecraft can generate artificial gravity for astronauts by pushing them towards the outer hull. The document also explained how circular motion and centripetal acceleration relate to creating gravity in space.
Elevator ab
1) Students conducted an experiment to measure changes in weight when riding in an elevator.
2) They used a balance, elevator, camera, and chronometer to record weight while the elevator moved up and down.
3) The results showed that weight increased when the elevator moved down due to gravitational acceleration, and weight decreased when moving up due to deceleration.
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- Neer impingement test (Rotator cuff – Supraspinatus)
- Jobe`s empty can test (Rotator cuff – Supraspinatus)
- Lift off test (Rotator cuff – Subscapularis)
- Drop arm test (Rotator cuff – Supraspinatus)
- Test for infraspinatus – push out
- Yergason test (Rotator cuff – Biceps)
- Test for teres minor
- Apprehension test (For Dislocation)
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1 worksheets 1 st term 2º eso athletics & fisical conditions
This document contains worksheets from a physical education class focusing on athletics. It includes exercises for warm up, stretching, and joint mobility. It also lists specific exercises that target different muscle groups. Additional worksheets track students' performance in track and field events like the 800m, 1500m, 200m, 100m, and 50m runs as well as throwing and jumping events. Times and distances are recorded for each attempt.
Core Exercises
This document lists various muscles important for core stability including the abdominals, hip flexors, gluteals, and spinal extensors. It then discusses how weak or imbalanced core muscles can lead to injuries, arthritis, and poor coordination. A variety of exercises are provided to strengthen the core through static holds, dynamic movements, and integrated exercises like the one-arm chest press. Planks, rollouts, and carries are among the stabilization and strength exercises recommended.
David Parker - Physical Integrity for the Throwing Events
This document discusses physical integrity and injury prevention for throwing events. It addresses common throwing injuries and mobility issues that can lead to them. Specific joints are identified as needing mobility or stability, and how tightness or weakness in certain muscles can impact posture, performance, and injury risk. Exercises are suggested to address mobility limitations that could hinder throwing technique or increase injuries, focusing on the shoulder, thoracic spine, and hip. Maintaining proper joint mobility and muscular balance is important for throwers to stay healthy, throw with more quality, and recover effectively.
Squat pages from acsm's foundations of strength training and conditioning
The document describes proper form and technique for performing barbell back squats. Key points include: holding the bar in a low-bar or high-bar position on the back, keeping the feet parallel and shoulder-width apart or wider, descending until the thighs are parallel to the ground, and ascending by extending the hips and knees. Common mistakes that should be avoided are allowing the knees to move too far forward, excessive leaning forward, and failing to perform the full range of motion. Variations include front squats, split squats, and single-leg squats.
TOTAL BODY STRENGTH WORKOUT
The document provides a full body workout routine that targets major muscle groups. It lists various exercises that work the legs, chest, back, shoulders, arms, abs, and lower back. For each exercise, the document includes spaces to record the weight used for sets of 12-20 repetitions over 2-3 sets. It recommends completing this full body workout 2-3 times per week for a total body strength training routine.
Proper Lifting Techniques
The document provides guidelines for proper lifting technique to avoid injury. It recommends checking that the load is not too heavy, warming up muscles first, keeping feet shoulder-width apart with one foot ahead of the load for balance. When lifting, bend the knees and keep the back straight using leg muscles rather than the back. Maintain a firm grip, keep the load close to the body, and move feet rather than twisting when changing direction. Lower the load slowly using leg muscles while keeping it close, and push loads onto shelves rather than lifting them overhead.
Multi Planar Training
This document discusses the importance of multi-planar training by addressing all three planes of movement: sagittal, frontal, and transverse. It provides examples of exercises that target each plane as well as circuits and progressions to incorporate multi-planar movements, especially important for the transverse plane which sees much sport movement but is often neglected. Plyometric training is also covered, emphasizing proper progression and technique to reduce injury risk while training multi-directional jumps and hops.
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This document outlines the warm-up, fundamental skills, and cool-down exercises for Arnis training. The warm-up includes jogging, shuffling, kicking exercises. Fundamental Arnis skills taught are proper grip, basic stance, salutation, fighting stance, forward stance, and backward stance. Cool-down involves static stretching of the wrists, fingers, overhead, chest, triceps, elbows, and back. Participants are instructed to practice these warm-up, skills, and cool-down exercises in groups.
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1 worksheets 1 st term 2º eso athletics & fisical conditions
1 worksheets 1 st term 2º eso athletics & fisical conditions
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Pp udl inroduction
- Universal design (UD) in architecture aims to make buildings and environments accessible to all by removing barriers rather than designing for the average user.
- UDL applies these UD principles to education by ensuring the learning environment (curriculum, materials, teaching) is accessible and beneficial to all students by considering diversity from the start of lesson planning rather than retrofitting afterwards.
- The UDL Guidelines provide a framework to help apply the three UDL principles of engagement, representation, and action and expression to educational practice through multiple means of representation, engagement, and expression.
Slope c
1. Students measured the weight of objects on horizontal surfaces and on slopes of varying degrees of inclination using kitchen and person balances.
2. They found that as the inclination of the slope increased, the measured weight decreased, with steeper slopes showing smaller weights.
3. The conclusion is that placing an object on a sloped surface decreases the measured weight, and weight decreases more with increased slope inclination as the force of gravity has more of a parallel component to the slope.
Spacesuit c
Two groups of students, one in Italy and one in Belgium, conducted experiments with space suits and aluminum foil. They tested how aluminum foil affects electromagnetic signals by calling phones with and without foil. They also dropped balls on surfaces with and without aluminum protection to see how foil reduces impact. The results showed that aluminum foil can stop electromagnetic radiation and lessen the size and depth of impacts when enough layers are used.
Elevator c
An experiment was conducted with people standing on a scale in an elevator to measure changes in weight as the elevator moved up and down. When the elevator went up, participants' weight increased, and when it went down, their weight decreased. This is because as the elevator moves up, it pushes the person up, increasing the force they exert on the scale, while moving down does not provide that additional pushing force, so the measured weight is less.
Magnet ab
1) The document describes an experiment to investigate how the weight of a magnet changes when another magnet is brought near it.
2) When the magnets attract each other, the weight of the lower magnet decreases, and when they repel each other, the weight increases.
3) The Belgian and Italian schools that performed the experiment found similar results, though they used different distances.
Buoyancy c
1. The experiment measured how the buoyant force of different liquids affected the weight of objects by submerging a cube and nuts in distilled water, salt water, and oil and measuring the resultant force.
2. The results showed that the resultant force was always smaller than gravity, with salt water producing the greatest reduction in weight.
3. This demonstrated that salt water best simulates the lower gravity conditions on Mars out of the three liquids, as it most reduced the apparent weight of the objects.
Generating gravity ab
This document summarizes a student experiment to simulate gravity on a spacecraft. The experiment involved spinning glass tubes with attached masses to measure the time taken to make 10 revolutions. Heavier masses took less time to complete 10 revolutions than lighter masses. The results supported the theory that centrifugal force from spinning a spacecraft can generate artificial gravity for astronauts by pushing them towards the outer hull. The document also explained how circular motion and centripetal acceleration relate to creating gravity in space.
Elevator ab
1) Students conducted an experiment to measure changes in weight when riding in an elevator.
2) They used a balance, elevator, camera, and chronometer to record weight while the elevator moved up and down.
3) The results showed that weight increased when the elevator moved down due to gravitational acceleration, and weight decreased when moving up due to deceleration.
Astronauts suit ab
The document summarizes two experiments conducted by Belgian and Italian students to test whether aluminum can protect astronauts from solar radiation and micrometeorites.
The first experiment tested whether aluminum foil could block electromagnetic waves by making phone calls to phones with and without aluminum wrapping. The second experiment dropped balls made of different materials into containers of sand with and without overlying aluminum foil to compare impact sizes.
Both groups found that aluminum blocked electromagnetic waves like solar radiation. They agreed aluminum reduced impact size but the Italians concluded it could fully protect against micrometeorites while the Belgians weren't certain it provided full protection.
Slope ab
Two groups of students - one from Belgium and one from Italy - conducted an experiment to measure the effect of slope on measured weight. They used kitchen scales and a balance scale to measure the weight of objects and people on slopes of varying angles. Both groups found that measured weight decreased with increased slope steepness. However, the Italian group found a greater change in measured weight over different slopes compared to the Belgian group, indicating the slopes in the Italian school were generally steeper.
Magnet on balance c
The students conducted an experiment to determine how the weight of a magnet is affected when another magnet is held above it. They found that if two magnets of the same polarity are held above each other, they repel and the weight increases, while if two magnets of opposite polarity are held above each other, they attract and the weight decreases. The results were the same in both Belgium and Italy because they can be explained by the Law of Universal Gravitation.
Generating gravity c
- Students conducted an experiment to investigate how to generate artificial gravity by spinning a spacecraft. They measured how the time it took to spin rubber caps attached to different masses changed when the mass or spin velocity was altered.
- The Belgian group found that heavier masses required faster spin speeds to remain attached to the rubber caps. The Italian group found that increasing the spin velocity allowed heavier masses to be elevated and that larger spin radii required lighter masses to remain attached.
- The experiment demonstrated that artificial gravity can be generated on a spacecraft by spinning and that both spin speed and radius impact the amount of gravity generated.
Buoyancy ab
The document describes an experiment to measure the effect of different liquids on the apparent weight of objects. Cubes and nuts were measured in distilled water, salt water, and oil. The results showed weight decreased most in oil due to its lower density, similar to how gravity is lower on Mars. While results matched theory, some differences occurred in practice between salt water and oil. The pulling up force from liquids causes apparent weight to decrease as buoyancy increases.
Summary physics
This document discusses several physics experiments related to weight and gravity. It describes experiments to determine how weight is affected by an elevator's movement, slope, nearby magnets, and different liquid environments. The document also explores how centrifugal force from a spinning mass can generate gravity and how aluminum foil can block electromagnetic signals and reduce impact. Key conclusions are that weight increases in an upward elevator, decreases on slopes and near attracting magnets, and is lowest in salt water due to buoyancy.
Buoyancy italy
This physics experiment tested how buoyancy changes with different liquids using a force sensor to measure the weight of objects submerged in distilled water, salt water, and oil. The experiment measured the weight of a cube and nuts in air and then in each liquid. As the density of the liquid increased from distilled water to salt water to oil, the measured weight of the submerged objects decreased, showing that buoyancy increases with the density of the surrounding liquid.
Question 5 group 12
1) The document discusses Newton's third law of motion and how it applies to Brand escaping the black hole in the movie Interstellar.
2) It explains that Cooper detaches his ship, applying a force, which by Newton's third law pushes Brand's ship in the opposite direction, allowing her to escape in a slingshot motion.
3) However, the third law requires equal and opposite forces, and escaping the black hole's strong gravity would require a large force from fuel, which they had already used up. Therefore, the third law alone could not be used to escape the black hole without an additional energy source like fuel.
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Classification
Metal ion ion indicators
Masking and demasking reagents
Estimation of Magnisium sulphate
Calcium gluconate
Complexometric Titration/ chelatometry titration/chelating titration, introduction, Types-
1.Direct Titration
2.Back Titration
3.Replacement Titration
4.Indirect Titration
Masking agent, Demasking agents
formation of complex
comparition between masking and demasking agents,
Indicators/Metal ion indicators/ Metallochromic indicators/pM indicators,
Visual Technique,PM indicators (metallochromic), Indicators of pH, Redox Indicators
Instrumental Techniques-Photometry
Potentiometry
Miscellaneous methods.
Complex titration with EDTA.
CLASS 12th CHEMISTRY SOLID STATE ppt (Animated)
Description:
Dive into the fascinating realm of solid-state physics with our meticulously crafted online PowerPoint presentation. This immersive educational resource offers a comprehensive exploration of the fundamental concepts, theories, and applications within the realm of solid-state physics.
From crystalline structures to semiconductor devices, this presentation delves into the intricate principles governing the behavior of solids, providing clear explanations and illustrative examples to enhance understanding. Whether you're a student delving into the subject for the first time or a seasoned researcher seeking to deepen your knowledge, our presentation offers valuable insights and in-depth analyses to cater to various levels of expertise.
Key topics covered include:
Crystal Structures: Unravel the mysteries of crystalline arrangements and their significance in determining material properties.
Band Theory: Explore the electronic band structure of solids and understand how it influences their conductive properties.
Semiconductor Physics: Delve into the behavior of semiconductors, including doping, carrier transport, and device applications.
Magnetic Properties: Investigate the magnetic behavior of solids, including ferromagnetism, antiferromagnetism, and ferrimagnetism.
Optical Properties: Examine the interaction of light with solids, including absorption, reflection, and transmission phenomena.
With visually engaging slides, informative content, and interactive elements, our online PowerPoint presentation serves as a valuable resource for students, educators, and enthusiasts alike, facilitating a deeper understanding of the captivating world of solid-state physics. Explore the intricacies of solid-state materials and unlock the secrets behind their remarkable properties with our comprehensive presentation.
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
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
Current descriptions of immersive learning cases are often difficult or impossible to compare. This is due to a myriad of different options on what details to include, which aspects are relevant, and on the descriptive approaches employed. Also, these aspects often combine very specific details with more general guidelines or indicate intents and rationales without clarifying their implementation. In this paper we provide a method to describe immersive learning cases that is structured to enable comparisons, yet flexible enough to allow researchers and practitioners to decide which aspects to include. This method leverages a taxonomy that classifies educational aspects at three levels (uses, practices, and strategies) and then utilizes two frameworks, the Immersive Learning Brain and the Immersion Cube, to enable a structured description and interpretation of immersive learning cases. The method is then demonstrated on a published immersive learning case on training for wind turbine maintenance using virtual reality. Applying the method results in a structured artifact, the Immersive Learning Case Sheet, that tags the case with its proximal uses, practices, and strategies, and refines the free text case description to ensure that matching details are included. This contribution is thus a case description method in support of future comparative research of immersive learning cases. We then discuss how the resulting description and interpretation can be leveraged to change immersion learning cases, by enriching them (considering low-effort changes or additions) or innovating (exploring more challenging avenues of transformation). The method holds significant promise to support better-grounded research in immersive learning.
Male reproduction physiology by Suyash Garg .pptx
Physiology of Male reproduction.
Video mentioned at page no. 23 as summary for better understanding
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 (
�
(
�
−
�
)
∼
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-
�
Ca-rich population. Although such an object is too red for any low-
�
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
�
) with
Λ
CDM. Therefore unlike low-
�
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-
�
truly diverge from their low-
�
counterparts, and to confirm that standardized luminosities nevertheless remain constant with redshift.
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.
fermented food science of sauerkraut.pptx
This ppt contains the production of a fermented food name - sauerkraut
Randomised Optimisation Algorithms in DAPHNE
Slides from talk:
Aleš Zamuda: Randomised Optimisation Algorithms in DAPHNE .
Austrian-Slovenian HPC Meeting 2024 – ASHPC24, Seeblickhotel Grundlsee in Austria, 10–13 June 2024
https://ashpc.eu/
Mechanisms and Applications of Antiviral Neutralizing Antibodies - Creative B...
Neutralizing antibodies, pivotal in immune defense, specifically bind and inhibit viral pathogens, thereby playing a crucial role in protecting against and mitigating infectious diseases. In this slide, we will introduce what antibodies and neutralizing antibodies are, the production and regulation of neutralizing antibodies, their mechanisms of action, classification and applications, as well as the challenges they face.
BIRDS DIVERSITY OF SOOTEA BISWANATH ASSAM.ppt.pptx
Ahota Beel, nestled in Sootea Biswanath Assam , is celebrated for its extraordinary diversity of bird species. This wetland sanctuary supports a myriad of avian residents and migrants alike. Visitors can admire the elegant flights of migratory species such as the Northern Pintail and Eurasian Wigeon, alongside resident birds including the Asian Openbill and Pheasant-tailed Jacana. With its tranquil scenery and varied habitats, Ahota Beel offers a perfect haven for birdwatchers to appreciate and study the vibrant birdlife that thrives in this natural refuge.
Anti-Universe And Emergent Gravity and the Dark Universe
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.
HUMAN EYE By-R.M Class 10 phy best digital notes.pdf
Class 10 human eye notes physics
Handwritten best quality
Candidate young stellar objects in the S-cluster: Kinematic analysis of a sub...
Context. The observation of several L-band emission sources in the S cluster has led to a rich discussion of their nature. However, a definitive answer to the classification of the dusty objects requires an explanation for the detection of compact Doppler-shifted Brγ emission. The ionized hydrogen in combination with the observation of mid-infrared L-band continuum emission suggests that most of these sources are embedded in a dusty envelope. These embedded sources are part of the S-cluster, and their relationship to the S-stars is still under debate. To date, the question of the origin of these two populations has been vague, although all explanations favor migration processes for the individual cluster members. Aims. This work revisits the S-cluster and its dusty members orbiting the supermassive black hole SgrA* on bound Keplerian orbits from a kinematic perspective. The aim is to explore the Keplerian parameters for patterns that might imply a nonrandom distribution of the sample. Additionally, various analytical aspects are considered to address the nature of the dusty sources. Methods. Based on the photometric analysis, we estimated the individual H−K and K−L colors for the source sample and compared the results to known cluster members. The classification revealed a noticeable contrast between the S-stars and the dusty sources. To fit the flux-density distribution, we utilized the radiative transfer code HYPERION and implemented a young stellar object Class I model. We obtained the position angle from the Keplerian fit results; additionally, we analyzed the distribution of the inclinations and the longitudes of the ascending node. Results. The colors of the dusty sources suggest a stellar nature consistent with the spectral energy distribution in the near and midinfrared domains. Furthermore, the evaporation timescales of dusty and gaseous clumps in the vicinity of SgrA* are much shorter ( 2yr) than the epochs covered by the observations (≈15yr). In addition to the strong evidence for the stellar classification of the D-sources, we also find a clear disk-like pattern following the arrangements of S-stars proposed in the literature. Furthermore, we find a global intrinsic inclination for all dusty sources of 60 ± 20◦, implying a common formation process. Conclusions. The pattern of the dusty sources manifested in the distribution of the position angles, inclinations, and longitudes of the ascending node strongly suggests two different scenarios: the main-sequence stars and the dusty stellar S-cluster sources share a common formation history or migrated with a similar formation channel in the vicinity of SgrA*. Alternatively, the gravitational influence of SgrA* in combination with a massive perturber, such as a putative intermediate mass black hole in the IRS 13 cluster, forces the dusty objects and S-stars to follow a particular orbital arrangement. Key words. stars: black holes– stars: formation– Galaxy: center– galaxies: star formation
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Alternate Wetting and Drying - Climate Smart Agriculture
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Compexometric titration/Chelatorphy titration/chelating titration
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Introduction_Ch_01_Biotech Biotechnology course .pptx
Introduction_Ch_01_Biotech Biotechnology course .pptx
SDSS1335+0728: The awakening of a ∼ 106M⊙ black hole⋆
SDSS1335+0728: The awakening of a ∼ 106M⊙ black hole⋆
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
Clinical periodontology and implant dentistry 2003.pdf
Clinical periodontology and implant dentistry 2003.pdf
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Mechanisms and Applications of Antiviral Neutralizing Antibodies - Creative B...
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BIRDS DIVERSITY OF SOOTEA BISWANATH ASSAM.ppt.pptx
BIRDS DIVERSITY OF SOOTEA BISWANATH ASSAM.ppt.pptx
Anti-Universe And Emergent Gravity and the Dark Universe
Anti-Universe And Emergent Gravity and the Dark Universe
HUMAN EYE By-R.M Class 10 phy best digital notes.pdf
HUMAN EYE By-R.M Class 10 phy best digital notes.pdf
Candidate young stellar objects in the S-cluster: Kinematic analysis of a sub...
Candidate young stellar objects in the S-cluster: Kinematic analysis of a sub...
Muscles2
- 2. BELGIAN PARTICIPANTS: PIETER-JAN AND ANTON
- 3. FRENCH PARTICIPANTS: CÉLIA AND ZAKARYA
- 4. RESEARCH QUESTION: WHEN ASTRONAUTS ARRIVE BACK ON EARTH THEY HAVE TROUBLE STANDING UP AND WALKING. WHY?
- 5. THE EXPERIMENT IN BELGIUM We needed to measure our weight standing up straight on a scale. Then we put the scale vertical against the wall and lie down on our back with our feet against the scale and we needed to push our legs against the scale and see what the difference was
- 6. THE EXPEREMENT IN FRANCE We have weighed a person and have registered his weight. Then we have put the person on a skateboard and that person exercised the strength against the scale which stands vertical against the wall. At the end we have observed the weight on the scale.
- 7. THE RESULTS name weight in N (standing up) Weight in N (laying down) Elien 520 53,0 Anton 510 53,0 Lars 652 68,7 Pieter-Jan 658 70,6 Celia 510 147
- 8. IN GRAPHICS
- 9. CONCLUSION When astronauts arrive back on earth they have troubles standing up and walking. Why? Because in space their muscles don't need to work so hard because the gravity is less strong in space and when they're back on earth, their muscles need to work hard again but they can't because they have become weak.
- 10. THIS WAS OUR POWERPOINT, I HOPE YOU ENJOYED IT