Evidences of Plate Movements 2.pptx
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1) Technological advances in the 1950s-1960s allowed for extensive exploration of the ocean floor, revealing key features like mid-ocean ridges, rift valleys, and areas of seismic activity near trenches. 2) The Seafloor Spreading Theory proposed by Harry Hess and Robert Dietz suggested that hot material from the mantle rises and spreads at ridges, creating new seafloor crust over time. 3) Evidence for seafloor spreading includes the age of rocks increasing with distance from ridges, and alternating stripes of normal and reversed magnetic polarity across the ocean floor that mirror each side of ridges.
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1. The document discusses the scientific discoveries that led to the development of the theory of seafloor spreading in the 1960s. These included findings that the ocean floor is much younger than originally thought, gets older further from mid-ocean ridges, and displays magnetic banding patterns that can be explained by the flipping of Earth's magnetic field during volcanic eruptions.
2. Harry Hess and Robert Dietz independently developed the theory of seafloor spreading to explain these patterns, proposing that new crust is formed at mid-ocean ridges and spreads laterally over time.
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1. Harry Hess proposed the theory of seafloor spreading in 1962, which provided evidence that Wegener's theory of continental drift was correct. Hess theorized that new ocean crust is formed at mid-ocean ridges through volcanic eruptions and then spreads outwards, pushing older crust farther away.
2. Evidence for seafloor spreading includes rock formations only possible from cooled lava, magnetic stripe patterns in ocean crust recording reversals of Earth's magnetic field, and drilling samples showing younger rock nearer to ridges.
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Some plates have continents; some don't. All are in motion. Question: What evidence is there for these plate boundaries? Tectonic Plates ...
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This document discusses evidence that supports continental drift and plate tectonics theories. It describes how the Earth's crust is divided into plates that move over time, occasionally colliding or splitting apart. Fossil, rock formation, and climate data from separated continents provided early evidence that landmasses have drifted over hundreds of millions of years. Studies of the ocean floor revealed patterns of magnetic polarity reversals and symmetrical magnetic strips that supported the hypothesis of sea floor spreading at mid-ocean ridges, with new crust forming and pushing older crust farther outward over time. Together this evidence established plate tectonics as the mechanism explaining continental movement and geological phenomena like earthquakes and volcanoes.
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This document provides an overview of plate tectonics and the key individuals and discoveries that led to the development of the theory. It discusses Alfred Wegener's idea of continental drift in the early 20th century, which was initially rejected. It then covers the discoveries of the mid-ocean ridge system and magnetic striping of the ocean floor in the 1950s-60s, which provided evidence that the continents are moving and new crust is generated at ocean ridges through seafloor spreading. This led to the acceptance of plate tectonics as a scientific theory to explain geological phenomena.
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1) Scientists discovered an underwater system of ridges and valleys on the ocean floor similar to those on continents using sound waves to map the seafloor. 2) In the 1960s, Harry Hess proposed the theory of seafloor spreading to explain movement of the ocean floor. He suggested hot material rises at mid-ocean ridges, spreads the seafloor apart as new material is created. 3) Evidence for seafloor spreading includes samples showing the youngest rocks are at ridges, with older rocks farther away, and magnetic patterns in rocks aligning in strips parallel to ridges from magnetic field reversals.
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1. The document discusses the scientific discoveries that led to the development of the theory of seafloor spreading in the 1960s. These included findings that the ocean floor is much younger than originally thought, gets older further from mid-ocean ridges, and displays magnetic banding patterns that can be explained by the flipping of Earth's magnetic field during volcanic eruptions.
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Continental drift theory proposed that the continents were once joined together in a supercontinent called Pangaea. Wegener provided evidence like matching fossil and rock formations across continents, but his theory was rejected due to lacking an explanation for how the continents moved. Later studies of the seafloor using sonar revealed mid-ocean ridges where new crust was formed, explaining continental drift through the process of seafloor spreading and plate tectonics. Earthquake data showed seismic activity occurs at plate boundaries, confirming the Earth's surface is composed of shifting tectonic plates.
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This document provides an overview of plate tectonics and the key individuals and discoveries that led to the development of the theory. It discusses Alfred Wegener's idea of continental drift in the early 20th century, which was initially rejected. It then covers the discoveries of the mid-ocean ridge system and magnetic striping of the ocean floor in the 1950s-60s, which provided evidence that the continents are moving and new crust is generated at ocean ridges through seafloor spreading. This led to the acceptance of plate tectonics as a scientific theory to explain geological phenomena.
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Early evidence that led to the idea of continental drift included the matching coastlines of continents on opposite sides of the Atlantic Ocean. Alfred Wegener later proposed the hypothesis of continental drift, suggesting the continents were once joined together in a supercontinent called Pangaea. Wegener provided additional evidence from rock and fossil distributions, but his hypothesis was rejected by most scientists at the time due to the lack of a proposed mechanism for continental movement. The development of technologies like sonar and magnetometers in the 1940s-50s revealed the structures of ocean ridges and trenches on the seafloor. Analysis of seafloor sediments and magnetic patterns from basalt flows provided evidence that the ocean floor spreads outward from mid-ocean ridges. This
Evidence... notes
1. Alfred Wegener first proposed the theory of continental drift in 1912, suggesting that the continents were once joined together in a supercontinent called Pangaea and have since moved to their current locations.
2. Evidence such as matching rock formations and fossil distributions across continents supports continental drift. Fossils of the same plants and animals have been found on separated continents.
3. The theory of plate tectonics emerged in the 1950s with the discovery of seafloor spreading at ocean ridges, where new crust is formed and plates move apart, providing a mechanism for continental drift.
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1. In 1912, Alfred Wegener proposed the continental drift theory which hypothesized that around 200 million years ago, all the continents were joined together in a supercontinent called Pangaea which later broke apart.
2. Evidence from fossils of the same plants and animals found across continents now separated by oceans, matching rock formations, and coal deposits provided support for continental drift.
3. In the 1960s, the theory of seafloor spreading was developed which helped explain continental drift as new ocean crust is formed at mid-ocean ridges and pushed continents apart.
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The document summarizes the theory of plate tectonics. It discusses how early scientists like Wegener proposed the idea of continental drift and Pangaea. Later evidence from mapping ocean floors and magnetic stripes on ocean crust supported sea floor spreading and plate tectonics. The theory states the earth's outer layer is divided into plates that constantly move via three types of boundaries: divergent where plates move apart, convergent where they push together, and transform where they slide past each other. The movement of plates like India colliding with Asia helped form features like the Himalayas.
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The document discusses evidence that supports the theory of plate tectonics and continental drift. It describes how early in Earth's formation, chemical segregation resulted in layers forming within the planet. Later, the nebular hypothesis proposed that planets accreted from a disk of dust and gases orbiting the sun. Evidence like matching fossil distributions, rock formations, and paleoclimate patterns across separated continents supported Alfred Wegener's idea that continents had drifted apart from an original supercontinent. This helped establish the modern theory of plate tectonics.
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This document discusses plate tectonics and the evidence that supports the theory. It describes how Alfred Wegener first proposed continental drift in 1912 and how the theory was rejected until the 1950s. The discovery of mid-ocean ridges provided evidence that the ocean floors were spreading and pushing the continents apart. Rocks and fossils found on separated continents matched and indicated they were once joined together in a supercontinent called Pangaea. The theory of plate tectonics emerged, linking continental drift and seafloor spreading to explain how the Earth's crust has evolved over time.
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This document discusses plate tectonics and the evidence that supports the theory. It describes how Alfred Wegener first proposed continental drift in 1912 and how the theory was rejected until the 1950s. The discovery of mid-ocean ridges provided evidence that the ocean floors were spreading and pushing the continents apart. Rocks and fossils found on separated continents matched and indicated they were once joined together in a supercontinent called Pangaea. The theory of plate tectonics emerged, linking continental drift and seafloor spreading to explain how the Earth's crust has evolved over time through the movement of tectonic plates.
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This document discusses plate tectonics and the evidence that supports the theory. It describes how Alfred Wegener first proposed continental drift in 1912 and how the theory was rejected until the 1950s. The discovery of mid-ocean ridges provided evidence that the ocean floors were spreading and pushing the continents apart. Rocks and fossils found on separated continents matched and indicated they were once joined as the supercontinent Pangaea. Plate tectonics emerged as a unified theory to explain these observations.
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This document discusses plate tectonics and the evidence that supports the theory. It describes how Alfred Wegener first proposed continental drift in 1912 and how the theory was rejected until the 1950s. The discovery of mid-ocean ridges provided evidence that the ocean floors were spreading and pushing the continents apart. Rock and fossil evidence also indicated that continents were once joined together in a supercontinent called Pangaea. The theory of plate tectonics emerged, linking ideas of continental drift and seafloor spreading to explain how tectonic plates move and cause geological features across the Earth.
Sea-Floor Spreading Notes - Jenny
Scientists in the 1950s used sonar to map the mid-ocean ridge and discovered it was not flat but made of underwater mountains. This discovery led them to research what the ridge was and how it formed. Evidence from molten rock formations, magnetic patterns in the ocean crust, and sediment core samples supported Harry Hess's theory from 1960 that the ocean floors spread from the mid-ocean ridge in a conveyor belt-like motion, pushing the continents. This process of sea-floor spreading continually recycles the ocean crust through subduction at deep ocean trenches.
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The document discusses plate tectonics theory and provides evidence that supports continental drift and seafloor spreading. It explains that plates move due to convection currents in the mantle, which also cause seafloor to spread at mid-ocean ridges. New seafloor is formed at ridges and old seafloor is destroyed at subduction zones. As plates move over time, this changes configurations of oceans and continents.
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1. The document discusses sea-floor spreading, which is the process where new oceanic crust forms at mid-ocean ridges as tectonic plates move away from each other.
2. Evidence that supports sea-floor spreading includes magnetic stripe patterns in the ocean floor and samples from ocean crust that show it is younger near ridges and older further away.
3. Oceanic crust is basaltic rock that forms at ridges and is then recycled in subduction zones, making it generally younger than continental crust which does not undergo this recycling process.
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The document discusses the theories of continental drift, seafloor spreading, and plate tectonics. It provides details on the original proponent of continental drift theory, Alfred Wegener, in 1915. It also outlines various geological, climatic, and biological evidence that supports continental drift. The document then discusses the sea floor spreading theory proposed by Harry Hess in the 1960s, which helped explain continental drift. It notes evidence that the ocean floor becomes progressively younger near mid-ocean ridges. Finally, it describes how the theories of continental drift and sea floor spreading were combined into the comprehensive theory of plate tectonics.
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The document summarizes plate tectonics and the development of the theory. It describes how early scientists like Wegener proposed continental drift but lacked evidence. Later, mapping of the ocean floor revealed patterns of magnetic stripes and rock ages indicating the seafloor spreads from mid-ocean ridges. This led scientists in the 1960s to develop the modern theory of plate tectonics, which proposes that Earth's crust is divided into plates that move due to convection currents in the mantle.
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The document discusses plate tectonics and the evidence that supports the theory. It describes how Alfred Wegener first proposed continental drift in 1912 and how scientists later discovered seafloor spreading at mid-ocean ridges. The theory of plate tectonics emerged, stating that the Earth's lithosphere is broken into plates that move over the asthenosphere. The boundaries between plates can be divergent, convergent, or transform. Plate motions are driven by convection currents in the Earth's mantle.
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The document discusses plate tectonics and the evidence supporting continental drift. It describes how Wegener first proposed the hypothesis of continental drift in 1912 based on observations that the continents seemed to fit together. The document outlines several pieces of evidence that supported Wegener's hypothesis, including matching coastlines, shared fossil distributions, and geological and climatic similarities between separated continents. It then describes how the theory of seafloor spreading provided further evidence when studies in the 1940s and 1950s showed the ocean floor was younger than the continents and spreading occurred at mid-ocean ridges. Paleomagnetic data from the seafloor also supported seafloor spreading and continental drift. Today the theory of plate tectonics unifies
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Early evidence that led to the idea of continental drift included the matching coastlines of continents on opposite sides of the Atlantic Ocean. Alfred Wegener later proposed the hypothesis of continental drift, suggesting the continents were once joined together in a supercontinent called Pangaea. Wegener provided additional evidence from rock and fossil distributions, but his hypothesis was rejected by most scientists at the time due to the lack of a proposed mechanism for continental movement. The development of technologies like sonar and magnetometers in the 1940s-50s revealed the structures of ocean ridges and trenches on the seafloor. Analysis of seafloor sediments and magnetic patterns from basalt flows provided evidence that the ocean floor spreads outward from mid-ocean ridges. This
Evidence... notes
1. Alfred Wegener first proposed the theory of continental drift in 1912, suggesting that the continents were once joined together in a supercontinent called Pangaea and have since moved to their current locations.
2. Evidence such as matching rock formations and fossil distributions across continents supports continental drift. Fossils of the same plants and animals have been found on separated continents.
3. The theory of plate tectonics emerged in the 1950s with the discovery of seafloor spreading at ocean ridges, where new crust is formed and plates move apart, providing a mechanism for continental drift.
evidences_plate.ppt
1. In 1912, Alfred Wegener proposed the continental drift theory which hypothesized that around 200 million years ago, all the continents were joined together in a supercontinent called Pangaea which later broke apart.
2. Evidence from fossils of the same plants and animals found across continents now separated by oceans, matching rock formations, and coal deposits provided support for continental drift.
3. In the 1960s, the theory of seafloor spreading was developed which helped explain continental drift as new ocean crust is formed at mid-ocean ridges and pushed continents apart.
Distribution of oceans and continents
The document summarizes the theory of plate tectonics. It discusses how early scientists like Wegener proposed the idea of continental drift and Pangaea. Later evidence from mapping ocean floors and magnetic stripes on ocean crust supported sea floor spreading and plate tectonics. The theory states the earth's outer layer is divided into plates that constantly move via three types of boundaries: divergent where plates move apart, convergent where they push together, and transform where they slide past each other. The movement of plates like India colliding with Asia helped form features like the Himalayas.
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The document discusses evidence that supports the theory of plate tectonics and continental drift. It describes how early in Earth's formation, chemical segregation resulted in layers forming within the planet. Later, the nebular hypothesis proposed that planets accreted from a disk of dust and gases orbiting the sun. Evidence like matching fossil distributions, rock formations, and paleoclimate patterns across separated continents supported Alfred Wegener's idea that continents had drifted apart from an original supercontinent. This helped establish the modern theory of plate tectonics.
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This document discusses plate tectonics and the evidence that supports the theory. It describes how Alfred Wegener first proposed continental drift in 1912 and how the theory was rejected until the 1950s. The discovery of mid-ocean ridges provided evidence that the ocean floors were spreading and pushing the continents apart. Rocks and fossils found on separated continents matched and indicated they were once joined together in a supercontinent called Pangaea. The theory of plate tectonics emerged, linking continental drift and seafloor spreading to explain how the Earth's crust has evolved over time.
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This document discusses plate tectonics and the evidence that supports the theory. It describes how Alfred Wegener first proposed continental drift in 1912 and how the theory was rejected until the 1950s. The discovery of mid-ocean ridges provided evidence that the ocean floors were spreading and pushing the continents apart. Rocks and fossils found on separated continents matched and indicated they were once joined together in a supercontinent called Pangaea. The theory of plate tectonics emerged, linking continental drift and seafloor spreading to explain how the Earth's crust has evolved over time through the movement of tectonic plates.
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This document discusses plate tectonics and the evidence that supports the theory. It describes how Alfred Wegener first proposed continental drift in 1912 and how the theory was rejected until the 1950s. The discovery of mid-ocean ridges provided evidence that the ocean floors were spreading and pushing the continents apart. Rocks and fossils found on separated continents matched and indicated they were once joined as the supercontinent Pangaea. Plate tectonics emerged as a unified theory to explain these observations.
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This document discusses plate tectonics and the evidence that supports the theory. It describes how Alfred Wegener first proposed continental drift in 1912 and how the theory was rejected until the 1950s. The discovery of mid-ocean ridges provided evidence that the ocean floors were spreading and pushing the continents apart. Rock and fossil evidence also indicated that continents were once joined together in a supercontinent called Pangaea. The theory of plate tectonics emerged, linking ideas of continental drift and seafloor spreading to explain how tectonic plates move and cause geological features across the Earth.
Sea-Floor Spreading Notes - Jenny
Scientists in the 1950s used sonar to map the mid-ocean ridge and discovered it was not flat but made of underwater mountains. This discovery led them to research what the ridge was and how it formed. Evidence from molten rock formations, magnetic patterns in the ocean crust, and sediment core samples supported Harry Hess's theory from 1960 that the ocean floors spread from the mid-ocean ridge in a conveyor belt-like motion, pushing the continents. This process of sea-floor spreading continually recycles the ocean crust through subduction at deep ocean trenches.
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The document discusses plate tectonics theory and provides evidence that supports continental drift and seafloor spreading. It explains that plates move due to convection currents in the mantle, which also cause seafloor to spread at mid-ocean ridges. New seafloor is formed at ridges and old seafloor is destroyed at subduction zones. As plates move over time, this changes configurations of oceans and continents.
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1. The document discusses sea-floor spreading, which is the process where new oceanic crust forms at mid-ocean ridges as tectonic plates move away from each other.
2. Evidence that supports sea-floor spreading includes magnetic stripe patterns in the ocean floor and samples from ocean crust that show it is younger near ridges and older further away.
3. Oceanic crust is basaltic rock that forms at ridges and is then recycled in subduction zones, making it generally younger than continental crust which does not undergo this recycling process.
Continental drift &and sea floor spreading
The document discusses the theories of continental drift, seafloor spreading, and plate tectonics. It provides details on the original proponent of continental drift theory, Alfred Wegener, in 1915. It also outlines various geological, climatic, and biological evidence that supports continental drift. The document then discusses the sea floor spreading theory proposed by Harry Hess in the 1960s, which helped explain continental drift. It notes evidence that the ocean floor becomes progressively younger near mid-ocean ridges. Finally, it describes how the theories of continental drift and sea floor spreading were combined into the comprehensive theory of plate tectonics.
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The document discusses plate tectonics and the evidence that supports the theory. It describes how Alfred Wegener first proposed continental drift in 1912 and how scientists later discovered seafloor spreading at mid-ocean ridges. The theory of plate tectonics emerged, stating that the Earth's lithosphere is broken into plates that move over the asthenosphere. The boundaries between plates can be divergent, convergent, or transform. Plate motions are driven by convection currents in the Earth's mantle.
Plate tectonics
The document discusses plate tectonics and the evidence supporting continental drift. It describes how Wegener first proposed the hypothesis of continental drift in 1912 based on observations that the continents seemed to fit together. The document outlines several pieces of evidence that supported Wegener's hypothesis, including matching coastlines, shared fossil distributions, and geological and climatic similarities between separated continents. It then describes how the theory of seafloor spreading provided further evidence when studies in the 1940s and 1950s showed the ocean floor was younger than the continents and spreading occurred at mid-ocean ridges. Paleomagnetic data from the seafloor also supported seafloor spreading and continental drift. Today the theory of plate tectonics unifies
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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.
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/
Travis Hills of MN is Making Clean Water Accessible to All Through High Flux ...
By harnessing the power of High Flux Vacuum Membrane Distillation, Travis Hills from MN envisions a future where clean and safe drinking water is accessible to all, regardless of geographical location or economic status.
MICROBIAL INTERACTION PPT/ MICROBIAL INTERACTION AND THEIR TYPES // PLANT MIC...
MICROBIAL INTERACTION PPT/ MICROBIAL INTERACTION AND THEIR TYPES // PLANT MIC...ABHISHEK SONI NIMT INSTITUTE OF MEDICAL AND PARAMEDCIAL SCIENCES , GOVT PG COLLEGE NOIDA
Microbial interaction
Microorganisms interacts with each other and can be physically associated with another organisms in a variety of ways.
One organism can be located on the surface of another organism as an ectobiont or located within another organism as endobiont.
Microbial interaction may be positive such as mutualism, proto-cooperation, commensalism or may be negative such as parasitism, predation or competition
Types of microbial interaction
Positive interaction: mutualism, proto-cooperation, commensalism
Negative interaction: Ammensalism (antagonism), parasitism, predation, competition
I. Mutualism:
It is defined as the relationship in which each organism in interaction gets benefits from association. It is an obligatory relationship in which mutualist and host are metabolically dependent on each other.
Mutualistic relationship is very specific where one member of association cannot be replaced by another species.
Mutualism require close physical contact between interacting organisms.
Relationship of mutualism allows organisms to exist in habitat that could not occupied by either species alone.
Mutualistic relationship between organisms allows them to act as a single organism.
Examples of mutualism:
i. Lichens:
Lichens are excellent example of mutualism.
They are the association of specific fungi and certain genus of algae. In lichen, fungal partner is called mycobiont and algal partner is called
II. Syntrophism:
It is an association in which the growth of one organism either depends on or improved by the substrate provided by another organism.
In syntrophism both organism in association gets benefits.
Compound A
Utilized by population 1
Compound B
Utilized by population 2
Compound C
utilized by both Population 1+2
Products
In this theoretical example of syntrophism, population 1 is able to utilize and metabolize compound A, forming compound B but cannot metabolize beyond compound B without co-operation of population 2. Population 2is unable to utilize compound A but it can metabolize compound B forming compound C. Then both population 1 and 2 are able to carry out metabolic reaction which leads to formation of end product that neither population could produce alone.
Examples of syntrophism:
i. Methanogenic ecosystem in sludge digester
Methane produced by methanogenic bacteria depends upon interspecies hydrogen transfer by other fermentative bacteria.
Anaerobic fermentative bacteria generate CO2 and H2 utilizing carbohydrates which is then utilized by methanogenic bacteria (Methanobacter) to produce methane.
ii. Lactobacillus arobinosus and Enterococcus faecalis:
In the minimal media, Lactobacillus arobinosus and Enterococcus faecalis are able to grow together but not alone.
The synergistic relationship between E. faecalis and L. arobinosus occurs in which E. faecalis require folic acid
ESA/ACT Science Coffee: Diego Blas - Gravitational wave detection with orbita...
ESA/ACT Science Coffee: Diego Blas - Gravitational wave detection with orbita...Advanced-Concepts-Team
Presentation in the Science Coffee of the Advanced Concepts Team of the European Space Agency on the 07.06.2024.
Speaker: Diego Blas (IFAE/ICREA)
Title: Gravitational wave detection with orbital motion of Moon and artificial
Abstract:
In this talk I will describe some recent ideas to find gravitational waves from supermassive black holes or of primordial origin by studying their secular effect on the orbital motion of the Moon or satellites that are laser ranged.快速办理(UAM毕业证书)马德里自治大学毕业证学位证一模一样
学校原件一模一样【微信：741003700 】《(UAM毕业证书)马德里自治大学毕业证学位证》【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。
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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)
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◇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】
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◇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
11.1 Role of physical biological in deterioration of grains.pdf
Storagedeteriorationisanyformoflossinquantityandqualityofbio-materials.
Themajorcausesofdeteriorationinstorage
•Physical
•Biological
•Mechanical
•Chemical
Storageonlypreservesquality.Itneverimprovesquality.
Itisadvisabletostartstoragewithqualityfoodproduct.Productwithinitialpoorqualityquicklydepreciates
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!
The debris of the ‘last major merger’ is dynamically young
The Milky Way’s (MW) inner stellar halo contains an [Fe/H]-rich component with highly eccentric orbits, often referred to as the
‘last major merger.’ Hypotheses for the origin of this component include Gaia-Sausage/Enceladus (GSE), where the progenitor
collided with the MW proto-disc 8–11 Gyr ago, and the Virgo Radial Merger (VRM), where the progenitor collided with the
MW disc within the last 3 Gyr. These two scenarios make different predictions about observable structure in local phase space,
because the morphology of debris depends on how long it has had to phase mix. The recently identified phase-space folds in Gaia
DR3 have positive caustic velocities, making them fundamentally different than the phase-mixed chevrons found in simulations
at late times. Roughly 20 per cent of the stars in the prograde local stellar halo are associated with the observed caustics. Based
on a simple phase-mixing model, the observed number of caustics are consistent with a merger that occurred 1–2 Gyr ago.
We also compare the observed phase-space distribution to FIRE-2 Latte simulations of GSE-like mergers, using a quantitative
measurement of phase mixing (2D causticality). The observed local phase-space distribution best matches the simulated data
1–2 Gyr after collision, and certainly not later than 3 Gyr. This is further evidence that the progenitor of the ‘last major merger’
did not collide with the MW proto-disc at early times, as is thought for the GSE, but instead collided with the MW disc within
the last few Gyr, consistent with the body of work surrounding the VRM.
Gadgets for management of stored product pests_Dr.UPR.pdf
Insectsplayamajorroleinthedeteriorationoffoodgrainscausingbothquantitativeandqualitativelosses
Wellprovedthatnogranariescanbefilledwithgrainswithoutinsectsastheharvestedproducecontainegg(or)larvae(or)pupae(or)adultinsectinthembecauseoffieldcarryoverinfestationwhichcannotbeavoidedindevelopingcountrieslikeIndia
Simpletechnologiesfortimelydetectionofinsectsinthestoredproduceandtherebyplantimelycontrolmeasures
Methods of grain storage Structures in India.pdf
•Post-harvestlossesaccountforabout10%oftotalfoodgrainsduetounscientificstorage,insects,rodents,micro-organismsetc.,
•Totalfoodgrainproductioninindiais311milliontonnesandstorageis145mt.InIndia,annualstoragelosseshavebeenestimated14mtworthofRs.7,000croreinwhichinsectsaloneaccountfornearlyRs.1,300crores.
•InIndiaoutofthetotalproduction,about30%ismarketablesurplus
•Remaining70%isretainedandstoredbyfarmersforconsumption,seed,feed.Hence,growerneedstoragefacilitytoholdaportionofproducetosellwhenthemarketingpriceisfavourable
•TradersandCo-operativesatmarketcentresneedstoragestructurestoholdgrainswhenthetransportfacilityisinadequate
Compexometric titration/Chelatorphy titration/chelating titration
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.
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Evidences of Plate Movements 2.pptx
- 1. 1 Evidences of Plate Movements Part 2 – Week 8 – Science 10
- 2. 2 2 Objectives - Describe the possible causes of the plate movement (S10ES –Iaj-36.5) - Enumerate the lines of evidence that support plate movement. (S10ES –Ia-j-36.6) 2
- 3. 3 Look back! What are the evidences of Continental Drift Theory based on the Pictures? • Fossil Evidence • Geologic Feature Evidence • Geologic Fit Evidence • Jigsaw Fit of the Continents • Paleoclimatic Evidence
- 4. 4 Seafloor Spreading Theory and it’s supporting Evidences
- 5. 5 5 During 50’s to 60’s Technology pave way to the exploration of the ocean floor Methods for seafloor Exploration • Depth Sounding • Sonar sounding 5
- 6. 6 During 50’s to 60’s Seafloor Exploration Discovery 1. Mid-Ocean Ridges 2. Oceanic Rift Valley 3. Areas found in the deeper part of the ocean usually have earthquakes near the trenches. 4. The oldest seafloor was found to be a lot younger compared to the oldest rocks found on the continents.
- 7. 7 7 Seafloor Spreading Theory Pioneered by Harry Hess and Robert Dietz • Materials found in the mantle are in motion forming large convection cells • Slowly rising hot material spread sideways causing the seafloor above to be pulled apart • Molten rock from the mantle will fill these gaps thereby forming new seafloor while building up the ridges. • Over time, the rocks forming the seafloor becomes cooler and denser. These cause the seafloor to sink in the area where the downward limbs of the convection current are located – the trenches • Based on this fact, it can be concluded that the seafloor is being recycled. 7
- 8. 8 Seafloor Spreading Theory Important in forming new bodies of water. Red Sea – African and Arabian plate Atlantic Ocean – North American and Eurasian Plate; South American and African Plate The rate of seafloor spreading varies Seafloor spreading can be calculated by dividing the distance traveled by the seafloor with the time it takes to happen. East Pacific Rise - 6 – 16 centimeters per year Mid – Atlantic Ridge - 2 – 5 centimeters per year
- 9. 9 9 Evidences of Seafloor Spreading Subtitle 9
- 10. 10 Age of Rocks (Seafloor) The age of Rocks increases as the distance to the ridges increases • 1968 - drilling ship called Glomar Challenger gather samples of rock in the ocean. • Based on this exploration, the scientists found that the rocks closer to the ridges are younger.
- 11. 11 Magnetic Reversal Polarity of the Seafloor is changing together with the Earth change of Magnetic Field • There are alternating stripes of normal and reversed polarity across the ocean. • These alternating stripes form mirror images on either side of the mid-ocean ridges. • The alternating magnetic polarity of rocks ends at the edge of the continents or the deep-sea trenches.
- 12. 12 12 Lets Sum it up In your own words, discuss briefly our lesson for this day. 12
- 13. 13 THANK YOU
Editor's Notes
- Depth Sounding (top) is a method of measuring the depth of the ocean using a rope with a weight tied at its end. Sonar sounding (bottom) makes use of ships that will send sound waves to the bottom of the sea. Instruments are also available to measure the time it takes for the sound waves to bounce back to the ship. The measured time, as well as the speed of sound in the sea (1460 meters per second) are used to calculate for the depth of the ocean.
- Scientists studying the seafloor tried to tow a magnetometer behind their ships. This revealed that rocks on the seafloor are magnetic. This magnetic property is brought about by the iron found in the rocks of the seafloor. Continuous mapping of the magnetic polarity of the seafloor revealed the following The alternating stripes indicate that the earth is shifting its magnetic field from time to time. The changing polarity of the seafloor indicates that these were formed at different times with different Earth magnetic field directions.