1. The document lists important scientific discoveries and developments from 1665 to 1898, including Hooke's discovery of cells in 1665, Van Leeuwenhoek's observation of bacteria in 1683, and Maxwell's unification of electricity and magnetism in 1864.
2. It then discusses the connection between science and technology in the 18th and 19th centuries, noting they found common ground in the 19th century.
3. The development of several sciences is summarized, including physics with discoveries about electricity, magnetism, and thermodynamics; chemistry with atomic theory and organic chemistry; and biology with Darwin's theory of evolution by natural selection.
Science, Technology and Society (STS) is an interdisciplinary field that studies the conditions under which the production, distribution and utilization of scientific knowledge and technological systems occur; the consequences of these activities upon different groups of people.
Science Technology and Society Chapter III Lesson 1. This PPT includes complete information about the timeline of information age. Various informations including images were included to further illustrate the timeline or history of information age.
The Romantic period started around 1830 and ended around 1900
It was a time when composers, artists and authors moved away from the formal restraint of the Classical period.
Romantic Music is a stylistic movement in Western orchestral music associated with the period of the nineteenth century commonly referred to as the Romantic era (or Romantic period).
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Science, Technology and Society (STS) is an interdisciplinary field that studies the conditions under which the production, distribution and utilization of scientific knowledge and technological systems occur; the consequences of these activities upon different groups of people.
Science Technology and Society Chapter III Lesson 1. This PPT includes complete information about the timeline of information age. Various informations including images were included to further illustrate the timeline or history of information age.
The Romantic period started around 1830 and ended around 1900
It was a time when composers, artists and authors moved away from the formal restraint of the Classical period.
Romantic Music is a stylistic movement in Western orchestral music associated with the period of the nineteenth century commonly referred to as the Romantic era (or Romantic period).
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☕ Buy me a Coffee: https://www.buymeacoffee.com/JoynulAbadinR
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
A brief information about the SCOP protein database used in bioinformatics.
The Structural Classification of Proteins (SCOP) database is a comprehensive and authoritative resource for the structural and evolutionary relationships of proteins. It provides a detailed and curated classification of protein structures, grouping them into families, superfamilies, and folds based on their structural and sequence similarities.
Multi-source connectivity as the driver of solar wind variability in the heli...Sérgio Sacani
The ambient solar wind that flls the heliosphere originates from multiple
sources in the solar corona and is highly structured. It is often described
as high-speed, relatively homogeneous, plasma streams from coronal
holes and slow-speed, highly variable, streams whose source regions are
under debate. A key goal of ESA/NASA’s Solar Orbiter mission is to identify
solar wind sources and understand what drives the complexity seen in the
heliosphere. By combining magnetic feld modelling and spectroscopic
techniques with high-resolution observations and measurements, we show
that the solar wind variability detected in situ by Solar Orbiter in March
2022 is driven by spatio-temporal changes in the magnetic connectivity to
multiple sources in the solar atmosphere. The magnetic feld footpoints
connected to the spacecraft moved from the boundaries of a coronal hole
to one active region (12961) and then across to another region (12957). This
is refected in the in situ measurements, which show the transition from fast
to highly Alfvénic then to slow solar wind that is disrupted by the arrival of
a coronal mass ejection. Our results describe solar wind variability at 0.5 au
but are applicable to near-Earth observatories.
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.
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.
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.
Nutraceutical market, scope and growth: Herbal drug technology
SCIENCE DEVELOPMENTS DURING 18TH AND 19TH CENTURY
1. WHO DONE WHAT? SAID WHAT? WHEN
Robert Hooke Describe cells for the first time. 1665
Anton Van Leeuwenhoek 1. Bacteria first observed.
2. Microorganism discovered.
1683
1696
Gabriel Fahrenheit Constructed first mercury thermometer. 1714
Benjamin Franklin Distinguished between negative and positive
charge.
Proposed conservation of charge.
1751
Carolus Linnaeus Used binary nomenclature to classify of
species.
1753
Antoine Lavoisier Experiments on burning. 1772
Abraham Werner Classification of minerals. 1774
William Herschel Discovered the planet Uranus. 1781
Henry Cavendish Combustion of oxygen produces water. 1783
Charles Coulomb Formulated Coulomb’s law of interactions
between charges and between magnets.
1785
Henry Cavendish Measured mass of earth after determining the
gravitational constant.
1798
Alessandro Volta Invented galvantic cell for storing and as a
source of electricity.
1800
John Dalton Formulated atomic theory of matter. 1808
Mary Anning Found first fossils of Ichthyosaur. 1811
Georges Cuvier Founded the science of comparative anatomy. 1812
Hans Christian Oersted Discovered the electric current generates
magnetism.
1820
Andre Marie Ampere Formulated Ampere’s law that tells how
electric current generates magnetism.
1820
Paul Erman First measurement of earth’s magnetism. 1828
2. Michael Faraday Formulated the law of induction that tells how
magnetism generated electricity.
1830
Robert Brown Discovered the nucleus in the cell. 1831
Crawford Long First use of ether in surgery. 1842
James Clerk Maxwell
Unified mathematically electricity and
magnetism into four equations. Predicted
existence of electromagnetic waves such as
light.
1864
Heinrich Hertz
Discovered, produced and detected radio
waves.
1887
Louis Pasteur
Developed vaccine against rabies. 1885
Daniel Williams First open heart surgery. 1893
William Roentgen Discovered x-rays 1895
Henri Becquerel Discovered natural radioactivity 1896
Michael S. Pupin First diagnostic x-ray taken 1896
J.J Thomson Discovered electron 1897
Martinus W. Beijerinck First known virus found 1898
3. IMPORTANT DEVELOPMENT IN SCIENCE
◦ Connection between science and technology were minimal in the 18th
century. In
19th
century these changed when science, technology and industry found a
common ground and common cause. Science became a growing force with
technology for a change in intellectual and material climate of the 19th
century.
Development of Science
Physics
- Coulomb’s law on electrostatic interaction published in 1785 and frictional electrostatic
instrumentation led to the new science of electricity.
- Volta invention of cell or battery led to the important discovery of Oersted in the 1820
that electricity generates magnetism.
- Faraday’s discovery in 1830 that magnetism generates electricity among others led
Maxwell unification theory of electricity and magnetism in 1864 predicting the radiation of
electromagnetic waves such as light of changing current.
- The work of Carnot, Claussius, Helmholtz resulted in the Development of thermodynamics
with 4 laws, statistical-molecular explanation of thermodynamics together with the refinement of
Newton’s by Laplace and Maxwell’s theory made physics and mathematical in character.
Chemistry
- Lavoisier made chemistry a science based upon analysis and measurements Dalton’s
atomic theory in 1808 provided for interpreting analysis and expressing chemical composition.
- The work of Humprey Day, Berzeliu and others led to the discovery of new elements
- The middle of 19th
century saw the birth of organic chemistry pioneered by Laurent and
Gerhadt.
- Thermodynamics and thermo chemistry that led to physical chemistry.
Biology
- In 1859 a breakthrough in understanding of evolution, was presented by Charles Darwin
(1809-1882) in his Origin of Species by natural selection theory which states that one species
could develop from another.
4. Darwin argued that:
1. Some individuals within a species have characteristics that allow them to survive better
than the rest.
2. Those who survive and reached adulthood are likely to breed passing on their
characteristics to the next generations.
3. With successive generations there will be an increase within a species of those
characteristics improving its survival chances.
4. The characteristics of a species are gradually modified.
Geology
Geology had emerged as a science capable of revealing information from the past from
fossils evidence as illustrated by the work of William Smith (1769-1839) and Charles Lyall.
They studied rock strata and the fossils in them noting that the deeper and older the strata the
greater are the difference in showed life forms and concluding a continuous process of change.