This document discusses thermal expansion and temperature. It explains that as temperature increases, the kinetic energy of molecules increases, causing them to vibrate faster and take up more space. Solids expand slightly as molecules vibrate in place, while liquids and gases expand more as molecules move further apart. Everyday examples of thermal expansion like thermometers and tightened lids are described.
This is a summary of the topic "Energy, work and power" in the GCE O levels subject: Physics. Students taking either the combined science (chemistry/physics) or pure Physics will find this useful. These slides are prepared according to the learning outcomes required by the examinations board.
This presentation is prepared for the students of grades 11 and 12 concluding the chapter thermodynamics. Proper notes with diagrams, facts, and figures are presented. Numericals are solved too.
This is a summary of the topic "Energy, work and power" in the GCE O levels subject: Physics. Students taking either the combined science (chemistry/physics) or pure Physics will find this useful. These slides are prepared according to the learning outcomes required by the examinations board.
This presentation is prepared for the students of grades 11 and 12 concluding the chapter thermodynamics. Proper notes with diagrams, facts, and figures are presented. Numericals are solved too.
Ivanolegov thermodynamics serbian 4th edition test bank 1Ivan Olegov
Thermal energy is the energy a compound or system has due to its temperature, i.e., the power of moving or shaking molecules, according to the Power Education web site of the Texas Education Company. Thermodynamics involves determining this energy, which can be "exceptionally complicated," according to David McKee, a teacher of physics at Missouri Southern State University. Commonly this is idealized as the mass of the system, the stress of the system, and the quantity of the system, or some various other comparable set of numbers.
Heat is a form of energy. According to the principle of thermodynamics whenever a physical or chemical transformation occurs heat flow into or leaves the system.
A number of sources of heat are used for industrial scale operations steam and electric power is the chief sources to transfer heat. It is essential to cover steam without any loses to the apparatus in which it is used. The study of heat transfer processes helps in be signing the plant efficiently and economically
THE IMPORTANCE OF MARTIAN ATMOSPHERE SAMPLE RETURN.Sérgio Sacani
The return of a sample of near-surface atmosphere from Mars would facilitate answers to several first-order science questions surrounding the formation and evolution of the planet. One of the important aspects of terrestrial planet formation in general is the role that primary atmospheres played in influencing the chemistry and structure of the planets and their antecedents. Studies of the martian atmosphere can be used to investigate the role of a primary atmosphere in its history. Atmosphere samples would also inform our understanding of the near-surface chemistry of the planet, and ultimately the prospects for life. High-precision isotopic analyses of constituent gases are needed to address these questions, requiring that the analyses are made on returned samples rather than in situ.
What is greenhouse gasses and how many gasses are there to affect the Earth.moosaasad1975
What are greenhouse gasses how they affect the earth and its environment what is the future of the environment and earth how the weather and the climate effects.
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
Nutraceutical market, scope and growth: Herbal drug technologyLokesh Patil
As consumer awareness of health and wellness rises, the nutraceutical market—which includes goods like functional meals, drinks, and dietary supplements that provide health advantages beyond basic nutrition—is growing significantly. As healthcare expenses rise, the population ages, and people want natural and preventative health solutions more and more, this industry is increasing quickly. Further driving market expansion are product formulation innovations and the use of cutting-edge technology for customized nutrition. With its worldwide reach, the nutraceutical industry is expected to keep growing and provide significant chances for research and investment in a number of categories, including vitamins, minerals, probiotics, and herbal supplements.
Professional air quality monitoring systems provide immediate, on-site data for analysis, compliance, and decision-making.
Monitor common gases, weather parameters, particulates.
The ability to recreate computational results with minimal effort and actionable metrics provides a solid foundation for scientific research and software development. When people can replicate an analysis at the touch of a button using open-source software, open data, and methods to assess and compare proposals, it significantly eases verification of results, engagement with a diverse range of contributors, and progress. However, we have yet to fully achieve this; there are still many sociotechnical frictions.
Inspired by David Donoho's vision, this talk aims to revisit the three crucial pillars of frictionless reproducibility (data sharing, code sharing, and competitive challenges) with the perspective of deep software variability.
Our observation is that multiple layers — hardware, operating systems, third-party libraries, software versions, input data, compile-time options, and parameters — are subject to variability that exacerbates frictions but is also essential for achieving robust, generalizable results and fostering innovation. I will first review the literature, providing evidence of how the complex variability interactions across these layers affect qualitative and quantitative software properties, thereby complicating the reproduction and replication of scientific studies in various fields.
I will then present some software engineering and AI techniques that can support the strategic exploration of variability spaces. These include the use of abstractions and models (e.g., feature models), sampling strategies (e.g., uniform, random), cost-effective measurements (e.g., incremental build of software configurations), and dimensionality reduction methods (e.g., transfer learning, feature selection, software debloating).
I will finally argue that deep variability is both the problem and solution of frictionless reproducibility, calling the software science community to develop new methods and tools to manage variability and foster reproducibility in software systems.
Exposé invité Journées Nationales du GDR GPL 2024
Seminar of U.V. Spectroscopy by SAMIR PANDASAMIR PANDA
Spectroscopy is a branch of science dealing the study of interaction of electromagnetic radiation with matter.
Ultraviolet-visible spectroscopy refers to absorption spectroscopy or reflect spectroscopy in the UV-VIS spectral region.
Ultraviolet-visible spectroscopy is an analytical method that can measure the amount of light received by the analyte.
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
Deep Behavioral Phenotyping in Systems Neuroscience for Functional Atlasing a...Ana Luísa Pinho
Functional Magnetic Resonance Imaging (fMRI) provides means to characterize brain activations in response to behavior. However, cognitive neuroscience has been limited to group-level effects referring to the performance of specific tasks. To obtain the functional profile of elementary cognitive mechanisms, the combination of brain responses to many tasks is required. Yet, to date, both structural atlases and parcellation-based activations do not fully account for cognitive function and still present several limitations. Further, they do not adapt overall to individual characteristics. In this talk, I will give an account of deep-behavioral phenotyping strategies, namely data-driven methods in large task-fMRI datasets, to optimize functional brain-data collection and improve inference of effects-of-interest related to mental processes. Key to this approach is the employment of fast multi-functional paradigms rich on features that can be well parametrized and, consequently, facilitate the creation of psycho-physiological constructs to be modelled with imaging data. Particular emphasis will be given to music stimuli when studying high-order cognitive mechanisms, due to their ecological nature and quality to enable complex behavior compounded by discrete entities. I will also discuss how deep-behavioral phenotyping and individualized models applied to neuroimaging data can better account for the subject-specific organization of domain-general cognitive systems in the human brain. Finally, the accumulation of functional brain signatures brings the possibility to clarify relationships among tasks and create a univocal link between brain systems and mental functions through: (1) the development of ontologies proposing an organization of cognitive processes; and (2) brain-network taxonomies describing functional specialization. To this end, tools to improve commensurability in cognitive science are necessary, such as public repositories, ontology-based platforms and automated meta-analysis tools. I will thus discuss some brain-atlasing resources currently under development, and their applicability in cognitive as well as clinical neuroscience.
(May 29th, 2024) Advancements in Intravital Microscopy- Insights for Preclini...Scintica Instrumentation
Intravital microscopy (IVM) is a powerful tool utilized to study cellular behavior over time and space in vivo. Much of our understanding of cell biology has been accomplished using various in vitro and ex vivo methods; however, these studies do not necessarily reflect the natural dynamics of biological processes. Unlike traditional cell culture or fixed tissue imaging, IVM allows for the ultra-fast high-resolution imaging of cellular processes over time and space and were studied in its natural environment. Real-time visualization of biological processes in the context of an intact organism helps maintain physiological relevance and provide insights into the progression of disease, response to treatments or developmental processes.
In this webinar we give an overview of advanced applications of the IVM system in preclinical research. IVIM technology is a provider of all-in-one intravital microscopy systems and solutions optimized for in vivo imaging of live animal models at sub-micron resolution. The system’s unique features and user-friendly software enables researchers to probe fast dynamic biological processes such as immune cell tracking, cell-cell interaction as well as vascularization and tumor metastasis with exceptional detail. This webinar will also give an overview of IVM being utilized in drug development, offering a view into the intricate interaction between drugs/nanoparticles and tissues in vivo and allows for the evaluation of therapeutic intervention in a variety of tissues and organs. This interdisciplinary collaboration continues to drive the advancements of novel therapeutic strategies.
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Objectives – 2.2.1
Describe qualitatively the thermal expansion of
solids, liquids, and gases at constant pressure.
Identify and explain some of the everyday
applications and consequences of thermal
expansion.
Explain, in terms of the motion and
arrangement of molecules, the relative order of
the magnitude of the expansion of solids, liquids
and gases.
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Introduction
Temperature – a measure of the internal
energy of the substance’s atoms/molecules.
Increase in temperature – caused by the
supply of heat which increases internal energy.
Internal energy – sum of kinetic energy and
potential energy of the atoms/molecules.
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Kinetic theory of matter
Kinetic theory – particles are constantly moving and have kinetic energy.
The higher the temperature, the faster they move, so the more kinetic
energy they contain.
Internal energy = Kinetic energy + Potential energy
Of all atoms or molecules in a matter
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Thermal Expansion
According to the kinetic theory the molecules of solids and
liquids are in constant vibration.
When heated they vibrate faster and force each other a
little further apart.
Expansion results, and this is greater for liquids than for
solids; gases expand even more.
The linear (length) expansion of solids is small and for the
effect to be noticed, the solid must be long and/or the
temperature change must be large.
Note that the cooling down of substances
tends to have the opposite effect – the
particles lose kinetic energy, come closer
together, and thus contract.
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Thermal Expansion
When something is heated, it expands because the
molecules take up more space:
When a solid is heated, the molecules vibrate more but stay
in place, so the relative order of magnitude of the expansion
is small.
When a liquid is heated, it expands for the same reason as a
solid, but the intermolecular forces are less so it expands
more.
When a gas is heated, the molecules move faster and
further apart, so the relative order of magnitude of the
expansion is the greatest.
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Uses of Thermal Expansion
1) Liquid-in-glass thermometers – uses expansion of liquid to tell
temperature.
2) Metal rods can be fitted into metal wheels, by heating wheel.
As the wheel cools, it contracts and pulls the rod and wheel
tightly together.
3) A metal lid or cap may stick on a glass jar or a bottle. Heating
the lid (for example, by running hot water over it) cause it to
expand (the glass expand much less), so the lid loosens and
can be removed.
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Uses of thermal Expansion –
Bimetal strip
A bimetal strip is a two-thin strips of different metals
(Brass and invar mostly) welded together.
The bimetallic strips used in fire alarms, thermostat and
bimetallic thermometers.
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Bimetal Fire Alarm
When the bimetallic strip in the fire alarm
heated up it expands and touches with contact,
so current flows through the circuit. As a result
bell rings.
https://javalab.org/en/bimetal_en/
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Bimetal Thermostat
The bimetal thermostat are devices which
control temperature. They are fitted to
immersion heaters, ovens, and refrigerators
and to some room heaters. There are
several different designs bimetal type is very
common.
The diagram below shows thermostat that
controls an electric heater. As the rooms
warms up, the bimetal strip expands (brass
expand more than invar), so two electrical
contact separate. This switches of the
heater. And when room cools down the
bimetal contract and again touches the
contact, so circuit completes and switch on
the heater. Temperature can be adjust by
turning control knob.
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Effects of Thermal Expansion
On a hot day concrete runway sections in airport expands
and this cause cracking. To solve this problem we leave
small gabs between sections.
On a hot day concrete bridges expand. To solve this problem,
we leave small gab at one end and support the other end
with rollers.
Telephone wire contract on cold days. To solve this problem,
we leave wires slack so that they are free to change length.
On a hot day railway lines expand. To solve this problem,
gaps are left between sections of railway lines to avoid
damage of the rails as the expand in hot weather.
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Expansion in Gases
Gases expand when they are heated, just like solids
and liquids. We can understand this by using the
kinetic model of matter. The diagram below shows
some gas in a cylinder fitted with a piston. At first the
gas is cold and its particles press weakly on the
piston. When the gas is heated, its particles moves
faster. Now they push greater force on the piston and
push it upwards. The gas has expanded.
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Expansion in Gases.
The upward force of the gas is balanced by downward
force of the piston. So in this situation, the pressure of
the gas is remained constant as it has expanded.
So for a fixed mass of a gas at constant pressure, the
volume gas is directly proportional to the increasing
temperature of the gas. This is called Charles’s law.
If the piston did not move, the volume of the gas remains
constant when it was heated but its pressure would
increase.