1.5 form 4 b_moment
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Forces can be arranged so that they balance, known as static equilibrium. There are two conditions for static equilibrium: 1) the sum of clockwise moments equals the sum of anticlockwise moments, meaning no net moment, and 2) the sum of forces in one direction equals the forces in the opposite direction, meaning no net force. Moment is defined as the turning effect of a force and is calculated as force multiplied by the perpendicular distance from the pivot to the line of force.
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Moments
This document defines key terms related to moments and forces:
- A moment is the product of a force and its perpendicular distance from the pivot point, and has a direction of either clockwise or counterclockwise.
- The center of gravity is the point where an object's entire weight is considered to act. For regular shapes it is the geometric center, and for irregular shapes it can be found by balancing.
- The plumb line method uses three lines dropped from holes in a lamina to find their intersection point, which is the center of gravity.
- The principle of moments states that the sum of clockwise moments equals the sum of counterclockwise moments about a point, with the total being zero.
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This document discusses moments and their applications. It defines moment as the product of a force and the perpendicular distance to the point of rotation. There are clockwise and anticlockwise moments. Varignon's principle of moments states the algebraic sum of moments about any point equals the moment of the resultant force. Levers are machines that use moments to multiply force. There are three types of simple levers and examples of levers include scissors and pliers. Compound levers use multiple simple levers together. Moments allow machines like levers to provide mechanical advantage.
6161103 8.4 frictional forces on screws
Screws are commonly used as fasteners to transmit power or motion between machine parts. A screw can be thought of as an inclined plane wrapped around a cylinder. When a screw is rotated, the nut moves along the inclined plane of the screw thread. The distance the nut moves in one revolution is called the lead of the screw. Large axial loads on a screw generate significant frictional forces on the threads. The moment required to turn a screw under an axial load depends on the frictional forces and can be calculated using force and moment equilibrium equations. A self-locking screw will remain locked in place through frictional forces alone when the applied moment is removed.
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This presentation introduces simple harmonic motion (SHM) and its applications. SHM describes a back-and-forth motion where the restoring force is directly proportional to displacement from the equilibrium position. One example is the motion of a spring according to Hooke's law, where the force is proportional to displacement. SHM has a differential equation and solutions that describe oscillations with a characteristic frequency and period. Common applications that exhibit SHM include springs, pendulums, and torsional oscillators.
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Composition of forces refers to finding the resultant force of multiple forces acting on a body. Resolution of a force is splitting a force into components without changing its effect. There are two main methods to find the resultant force - analytical using parallelogram law or triangle law of forces, and graphical using vector resolution. The polygon law of forces states the sides of a polygon representing forces in magnitude and direction will have a resultant equal to the closing side in opposite direction.
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The document discusses rotational equilibrium as the second condition of equilibrium for objects under the influence of forces. It defines key terms like moment arm, torque, and explains that for an object to be in rotational equilibrium, the sum of all torques about any axis must be zero. It provides examples calculating torque using the equation torque = force x moment arm, and illustrates applying the first and second conditions of equilibrium to solve for unknown forces on an object.
The principal screw of inertia two
When a point of observation is occupied, there is also information to Specify the observer himself, and this information cannot be shared by other observers.
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Moments
This document defines key terms related to moments and forces:
- A moment is the product of a force and its perpendicular distance from the pivot point, and has a direction of either clockwise or counterclockwise.
- The center of gravity is the point where an object's entire weight is considered to act. For regular shapes it is the geometric center, and for irregular shapes it can be found by balancing.
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This document discusses moments and their applications. It defines moment as the product of a force and the perpendicular distance to the point of rotation. There are clockwise and anticlockwise moments. Varignon's principle of moments states the algebraic sum of moments about any point equals the moment of the resultant force. Levers are machines that use moments to multiply force. There are three types of simple levers and examples of levers include scissors and pliers. Compound levers use multiple simple levers together. Moments allow machines like levers to provide mechanical advantage.
6161103 8.4 frictional forces on screws
Screws are commonly used as fasteners to transmit power or motion between machine parts. A screw can be thought of as an inclined plane wrapped around a cylinder. When a screw is rotated, the nut moves along the inclined plane of the screw thread. The distance the nut moves in one revolution is called the lead of the screw. Large axial loads on a screw generate significant frictional forces on the threads. The moment required to turn a screw under an axial load depends on the frictional forces and can be calculated using force and moment equilibrium equations. A self-locking screw will remain locked in place through frictional forces alone when the applied moment is removed.
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The chapter discusses moments of forces including:
1) Moment magnitude is calculated as MO = Fd, where d is the perpendicular distance from the point to the force's line of action.
2) Direction of moment is defined by the right hand rule.
3) For 3D problems, moment can be calculated as MO = r X F, where r is the position vector from the point to the force.
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W = mg = 0.05kg x 10N/kg = 0.5N
θ = 40°
Using resolution of forces:
Py = W sinθ
= 0.5N sin40°
= 0.33N
Px = W cosθ
= 0.5N cos40°
= 0.43N
Therefore, the magnitude of the weight parallel to the inclined plane (Px) is 0.43N.
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The chapter discusses moments of forces including:
1) Moment magnitude is calculated as MO = Fd, where d is the perpendicular distance from the point to the force's line of action.
2) Direction of moment is defined by the right hand rule.
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W = mg = 0.05kg x 10N/kg = 0.5N
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Using resolution of forces:
Py = W sinθ
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= 0.33N
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= 0.5N cos40°
= 0.43N
Therefore, the magnitude of the weight parallel to the inclined plane (Px) is 0.43N.
Coplanar concurrent forces PPT GTU
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2) For a system of coplanar concurrent forces to be in equilibrium, the algebraic sum of the forces along two perpendicular directions must be zero.
3) There are analytical and graphical methods to find the resultant force of a coplanar concurrent forces system, including the parallelogram law, resolution of forces, triangle law, and polygon law of forces.
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1. The document discusses moments, which describe the turning effect of forces. A moment is calculated by multiplying the force by the perpendicular distance from the pivot.
2. It provides examples of calculating moments and using the principle of moments, which states that for an object in equilibrium, the sum of clockwise moments equals the sum of anticlockwise moments.
3. Determining the center of mass of an object allows it to be balanced on a pivot. The center of mass can be found experimentally by balancing irregular objects on different points and identifying where the lines intersect.
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This document discusses different types of force systems and how to calculate their resultants. It describes:
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2. The resultant of non-concurrent forces may not be a single force, but instead a force system comprising a force, couple, or both.
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The document discusses general systems of forces in engineering mechanics. It covers equations of equilibrium for concurrent coplanar forces in a plane, types of support and reaction forces, and free body diagrams. Free body diagrams show all external forces acting on a body and are used to analyze equilibrium of forces on objects. Key concepts covered include concurrent and non-concurrent forces, constraints, actions and reactions, and the moment of a force.
4773390
Torque is a measure of the tendency of a force to cause rotational motion. It is defined as the product of the force and the lever arm perpendicular distance from the axis of rotation. Net torque must be zero for a system to be in rotational equilibrium. Non-zero net torque produces angular acceleration proportional to the torque and inversely proportional to the object's moment of inertia, a measure of how difficult it is to change its rotation depending on its mass distribution. Rotational motion concepts are analogous to linear motion concepts with torque analogous to force, moment of inertia to mass, angular acceleration to linear acceleration, and angular momentum to linear momentum.
Rotational dynamics as per class 12 Maharashtra State Board syllabus
This ppt is as per class 12 Maharashtra State Board's new syllabus w.e.f. 2020. Images are taken from Google public sources and Maharashtra state board textbook of physics. Gif(videos) from Giphy.com. Only intention behind uploading these ppts is to help state board's class 12 students understand physics concepts.
Fundamentals of statics
This document provides an overview of mechanics of solids, including fundamentals of statics such as laws for analyzing coplanar concurrent force systems using the parallelogram, triangle, and polygon laws. It also discusses analytical methods for resolving and composing concurrent coplanar forces using components, as well as graphical methods. Additional topics covered include coplanar non-concurrent forces, moments, couples, Varignon's theorem, and equilibrium conditions.
Momento en estructuras
This document discusses basic principles of statics, which is the branch of mechanics dealing with stationary bodies under forces. It defines static equilibrium as when the sum of all forces and moments equals zero. It also discusses concepts such as static determinacy, types of forces including vectors and their addition, resolution of forces, concurrent forces, and free-body diagrams. Examples are provided to demonstrate how to determine reactions and tensions using these principles.
Basic mechanical engineering 2
This document summarizes key concepts about moments:
1) A moment is a measure of a force's tendency to cause rotation about a point or axis. It occurs when a force does not pass through the body's centroid.
2) The magnitude of a moment is directly proportional to the force and the perpendicular distance between the force's line of action and the center of moments (moment arm).
3) Examples are provided to calculate moments using the formula: Moment = Force x Distance. Assignments related to moments and couples are listed.
Forces and Motion (1).pdf
This document provides information about various concepts related to linear motion, including:
- Acceleration, deceleration, constant velocity, and how these concepts are represented on distance-time and velocity-time graphs.
- Key features of motion graphs like gradient, area under the graph, and how to analyze non-uniform velocity and acceleration.
- Other linear motion topics like inertia, momentum, impulse, force, balanced forces, gravity, pulleys, and work, energy, power and efficiency.
- Diagrams and examples are provided to illustrate concepts like collisions, explosions, resolution of forces, three forces in equilibrium, and elasticity.
Similar to 1.5 form 4 b_moment (20)
moments couples and force couple systems by ahmad khan
moments couples and force couple systems by ahmad khan
General system of forces unit 4 bce & engg mechanics
General system of forces unit 4 bce & engg mechanics
Rotational dynamics as per class 12 Maharashtra State Board syllabus
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More from chris lembalemba
Wave motion
Wave motion transfers energy from one place to another. There are two main types of waves: transverse waves where particles oscillate perpendicular to the wave direction, and longitudinal waves where particles oscillate parallel to the wave direction. Key wave properties include amplitude, wavelength, frequency, and phase. Waves can undergo various interactions including reflection, refraction, diffraction, interference, and superposition. Interference of waves leads to constructive and destructive interference patterns. Standing waves occur due to interference of waves traveling in opposite directions.
Wk 17 p1 wk 18-p6_24.1-24.4_alternating currents
This document discusses alternating current (AC). It describes the characteristics of AC including period, frequency, peak value and root-mean-square value. It also discusses how AC power is transmitted through transformers and rectified to direct current (DC) for applications. Key points covered include the rms and peak values of AC, mean power in a resistive load, representation of AC by equations, transformer principles and ratios, transmission of power at high voltages to reduce losses, and half-wave and full-wave rectification using diodes.
Wk 23 p5 wk 25-p2_26.3-26.4_particle and nuclear physics
This document provides an overview of nuclear physics concepts including:
- Mass defect and binding energy are explained using examples like helium-4 nucleus.
- Nuclear stability is determined by the balance of strong nuclear force and Coulombic repulsion.
- Nuclear fission and fusion are described along with examples like uranium-235.
- Radioactive decay is random and spontaneous in nature as demonstrated through a dice simulation example. The half-life concept is also introduced.
Wk 10 p1 8-18.1-18.2_capacitance
The document provides information about capacitors and capacitance. It defines capacitance as the ratio of the charge stored (Q) to the potential difference (V) between capacitor plates (C = Q/V). It describes how capacitance is measured in Farads and depends on the area of plates, distance between plates, and dielectric material. Capacitors can be arranged in series or parallel circuits, and formulas are provided to calculate the equivalent capacitance in these arrangements. Energy is stored in capacitors and the amount depends on the capacitance and potential difference according to the formula E = 1/2 CV^2.
Wk 6 p3 wk 7-p8_1.2-1.3 & 10.1-10.3_ideal gases
The document discusses Avogadro's constant and its relationship to moles. It defines a mole as the amount of a substance containing 6.02x1023 particles, which may be atoms, molecules, or ions. It then discusses how molar quantities allow expressing amounts of substances in moles rather than grams. For example, one can refer to the molar volume or molar mass of a gas. The document also discusses the kinetic theory of gases and how it relates the pressure and temperature of a gas to the motion of its molecules.
Wk 5 p1 wk 6-p2_12.1-12.2_thermal properties of materials
Thermal properties of materials can be explained using a kinetic molecular model. Melting and boiling occur at constant temperatures as energy input goes towards overcoming intermolecular forces rather than increasing kinetic energy. Specific heat capacity is the energy required to raise 1kg of a substance by 1°C, while specific latent heats refer to phase changes. The first law of thermodynamics states that the change in internal energy of a system equals heat supplied plus work done on the system.
Wk 1 p7 wk 3-p8_13.1-13.3 & 14.6_oscillations & ultrasound
This document discusses oscillations and simple harmonic motion. It begins by listing learning outcomes related to oscillations, including describing examples of free and forced oscillations. It then provides definitions and equations related to simple harmonic motion, such as the defining equation a=-ω2x. Graphs of displacement, velocity, and acceleration over time for simple harmonic motion are shown. Examples of the simple pendulum and a mass on a spring are provided to illustrate simple harmonic motion. The document also discusses the kinetic and potential energy changes that occur during simple harmonic motion.
Wk 4 p1 wk 4-p8_11.1-11.3_temperature
The document discusses temperature and thermometry. It defines temperature and describes how it relates to the kinetic energy of particles. It introduces common temperature scales like Celsius and Kelvin, and describes how fixed points are used to define scales. Thermometers are devices that measure temperature, with examples being gas thermometers, resistance thermometers, liquid-in-glass thermometers, and thermoelectric thermometers. The key properties measured include pressure, resistance, volume, and voltage. Formulas are provided for converting between measured values and reported temperatures on different scales.
4.4 form 4 dangers of electricity
This document discusses electrical hazard awareness and safety. It notes that electrical hazards can cause injury, death, fires or property damage. Some key electrical hazards include making contact with overhead power lines, working on live equipment, and using damaged electrical tools. The document provides guidance on responding to electrical incidents, types of electrical injuries, and measures to protect oneself from electricity such as turning off the power source, wearing appropriate clothing and using qualified personnel. It emphasizes taking precautions and following safety procedures to avoid electrical hazards.
4.3 form 4 current
The document discusses electric current, resistance, electromotive force, and some basic circuit concepts:
1) Electric current is defined as the flow of electric charge through a cross-sectional area per unit time. It is measured in amperes.
2) Resistance depends on the length, cross-sectional area, temperature, and material of a conductor. It is measured in ohms.
3) An electromotive force is a device that provides electric potential difference (voltage) to push current through a circuit against resistance. Batteries and generators are common sources of electromotive force.
4.3.c form 4 circuit components
This document summarizes various circuit components including direct current (DC), alternating current (AC), fuses, resistors, capacitors, diodes, transistors and other components. It describes what each component is, how it works, and examples of its uses in circuits. Key components covered are fixed and variable resistors, fuses, voltmeters, ammeters, plugs, capacitors, thermistors, diodes, and transistors. Resistor color codes and examples are provided. The functions of transistors as switches and for amplification are also summarized.
4.3.b form 4 parallel circuits
1) Electrical components in a parallel circuit provide separate conducting paths for current. Current divides between the paths, but voltage remains equal across all components.
2) The total resistance of a parallel circuit is less than the smallest individual resistance and decreases as more paths are added.
3) Current can be different in each branch of a parallel circuit, while the total current equals the sum of the individual branch currents.
4.3.b form 4 combined circuits
This document covers combination circuits, which have multiple current paths and resistors that can be in series or parallel. It defines combination circuits and lists the rules for series and parallel circuits. It also provides examples of solving combination circuits by simplifying, reducing, and redrawing equivalent circuits before applying Ohm's law to solve for values.
4.2 form 4 static_electricity
Static electricity is a stationary electric charge built up on the surface of materials. It is caused by electrons being transferred between two objects during friction. There are two types of charges - positive and negative. Atoms contain protons which have a positive charge and electrons which have a negative charge. The laws of electrostatics state that like charges repel and unlike charges attract. Materials that allow charge to pass through are conductors, while insulators do not. When a charged object is brought near an uncharged object, the electric field can induce charges in the uncharged object. Some applications of static electricity include electrostatic precipitators, printers, and photocopiers. Grounding neutralizes charged objects by connecting them to the earth.
3.5 form 4 sound
This document discusses the reflection and refraction of sound. It explains that hard surfaces reflect sound waves, creating an echo. The time it takes for an echo to return is used to calculate the distance to the reflecting surface. Sound travels at different speeds in various materials. Refraction occurs when sound waves travel from one medium to another, such as underwater. The document also covers pitch, frequency, amplitude, and loudness of sound waves. It describes how ultrasound, which is above the human hearing range, has various uses such as metal testing and medical scanning.
3.4 form 4 electromagnetic spectrum
The electromagnetic spectrum includes all types of electromagnetic waves, ranging from radio waves with the longest wavelengths to gamma rays with the shortest wavelengths. It consists of radio waves, microwaves, infrared, visible light, ultraviolet, X-rays and gamma rays. All electromagnetic waves travel at the speed of light, oscillate perpendicular to their direction of propagation, and can transfer energy. Lower frequency waves such as radio waves have longer wavelengths while higher frequency waves such as gamma rays have shorter wavelengths and more energy. Each type of electromagnetic wave has different properties and applications such as communication technologies, heating foods, vision, sterilization, and medical imaging.
3.4 form 4 dispersion of light
Dispersion is the separation of white light into a spectrum by refraction. It occurs because different colors of light travel at slightly different speeds through transparent substances like glass and water. When white light passes through a prism, violet light is deviated the most and red light is deviated the least, forming a visible spectrum. An example of natural dispersion is a rainbow formed by water droplets in the sky.
3.3 form 4 converging lens
Lenses bend light to form images, either converging or diverging. Convex lenses are thick in the middle and thin at the edges, converging light, while concave lenses are thin in the middle and thick at the edges, diverging light. Ray diagrams illustrate the path of light through lenses using lines representing rays and key points like the optical center, principal axis, focal points, and images. Images can be magnified or diminished, inverted or upright, and real or virtual depending on their position relative to the lens and focal points. Magnification is calculated by comparing the size of the image to the object.
3.2 form 4 light
Light travels as waves and can undergo various phenomena including reflection, refraction, diffraction and interference. Reflection occurs when light hits a surface, causing it to bounce off at the same angle. Refraction happens when light passes from one medium to another of different density, causing it to change speed and bend. This bending is described by Snell's law. Total internal reflection occurs when light passes from a denser to less dense medium at an angle greater than the critical angle, causing it to reflect back inside the denser medium. This principle is applied in devices like optical fibers.
3.2 form 3 light
Light travels as waves and can undergo various interactions as it travels, such as reflection, refraction, and interference. Reflection occurs when light bounces off a surface, following the law that the angle of incidence equals the angle of reflection. Refraction happens when light passes from one medium to another of different density, causing it to change speed and bend according to Snell's law. Refraction is responsible for phenomena like dispersion and the apparent bending of objects in water.
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Wk 23 p5 wk 25-p2_26.3-26.4_particle and nuclear physics
Wk 23 p5 wk 25-p2_26.3-26.4_particle and nuclear physics
Wk 6 p3 wk 7-p8_1.2-1.3 & 10.1-10.3_ideal gases
Wk 6 p3 wk 7-p8_1.2-1.3 & 10.1-10.3_ideal gases
Wk 5 p1 wk 6-p2_12.1-12.2_thermal properties of materials
Wk 5 p1 wk 6-p2_12.1-12.2_thermal properties of materials
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Wk 1 p7 wk 3-p8_13.1-13.3 & 14.6_oscillations & ultrasound
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Evaporation step counter work. I have done a physical experiment.
(Work in progress.)
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https://ashpc.eu/
Immersive Learning That Works: Research Grounding and Paths Forward
We will metaverse into the essence of immersive learning, into its three dimensions and conceptual models. This approach encompasses elements from teaching methodologies to social involvement, through organizational concerns and technologies. Challenging the perception of learning as knowledge transfer, we introduce a 'Uses, Practices & Strategies' model operationalized by the 'Immersive Learning Brain' and ‘Immersion Cube’ frameworks. This approach offers a comprehensive guide through the intricacies of immersive educational experiences and spotlighting research frontiers, along the immersion dimensions of system, narrative, and agency. Our discourse extends to stakeholders beyond the academic sphere, addressing the interests of technologists, instructional designers, and policymakers. We span various contexts, from formal education to organizational transformation to the new horizon of an AI-pervasive society. This keynote aims to unite the iLRN community in a collaborative journey towards a future where immersive learning research and practice coalesce, paving the way for innovative educational research and practice landscapes.
Applied Science: Thermodynamics, Laws & Methodology.pdf
When I was asked to give a companion lecture in support of ‘The Philosophy of Science’ (https://shorturl.at/4pUXz) I decided not to walk through the detail of the many methodologies in order of use. Instead, I chose to employ a long standing, and ongoing, scientific development as an exemplar. And so, I chose the ever evolving story of Thermodynamics as a scientific investigation at its best.
Conducted over a period of >200 years, Thermodynamics R&D, and application, benefitted from the highest levels of professionalism, collaboration, and technical thoroughness. New layers of application, methodology, and practice were made possible by the progressive advance of technology. In turn, this has seen measurement and modelling accuracy continually improved at a micro and macro level.
Perhaps most importantly, Thermodynamics rapidly became a primary tool in the advance of applied science/engineering/technology, spanning micro-tech, to aerospace and cosmology. I can think of no better a story to illustrate the breadth of scientific methodologies and applications at their best.
如何办理(uvic毕业证书)维多利亚大学毕业证本科学位证书原版一模一样
原版纸张【微信：741003700 】【(uvic毕业证书)维多利亚大学毕业证】【微信：741003700 】学位证，留信认证（真实可查，永久存档）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，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
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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
Phenomics assisted breeding in crop improvement
As the population is increasing and will reach about 9 billion upto 2050. Also due to climate change, it is difficult to meet the food requirement of such a large population. Facing the challenges presented by resource shortages, climate
change, and increasing global population, crop yield and quality need to be improved in a sustainable way over the coming decades. Genetic improvement by breeding is the best way to increase crop productivity. With the rapid progression of functional
genomics, an increasing number of crop genomes have been sequenced and dozens of genes influencing key agronomic traits have been identified. However, current genome sequence information has not been adequately exploited for understanding
the complex characteristics of multiple gene, owing to a lack of crop phenotypic data. Efficient, automatic, and accurate technologies and platforms that can capture phenotypic data that can
be linked to genomics information for crop improvement at all growth stages have become as important as genotyping. Thus,
high-throughput phenotyping has become the major bottleneck restricting crop breeding. Plant phenomics has been defined as the high-throughput, accurate acquisition and analysis of multi-dimensional phenotypes
during crop growing stages at the organism level, including the cell, tissue, organ, individual plant, plot, and field levels. With the rapid development of novel sensors, imaging technology,
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The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptx
Although Artemia has been known to man for centuries, its use as a food for the culture of larval organisms apparently began only in the 1930s, when several investigators found that it made an excellent food for newly hatched fish larvae (Litvinenko et al., 2023). As aquaculture developed in the 1960s and ‘70s, the use of Artemia also became more widespread, due both to its convenience and to its nutritional value for larval organisms (Arenas-Pardo et al., 2024). The fact that Artemia dormant cysts can be stored for long periods in cans, and then used as an off-the-shelf food requiring only 24 h of incubation makes them the most convenient, least labor-intensive, live food available for aquaculture (Sorgeloos & Roubach, 2021). The nutritional value of Artemia, especially for marine organisms, is not constant, but varies both geographically and temporally. During the last decade, however, both the causes of Artemia nutritional variability and methods to improve poorquality Artemia have been identified (Loufi et al., 2024).
Brine shrimp (Artemia spp.) are used in marine aquaculture worldwide. Annually, more than 2,000 metric tons of dry cysts are used for cultivation of fish, crustacean, and shellfish larva. Brine shrimp are important to aquaculture because newly hatched brine shrimp nauplii (larvae) provide a food source for many fish fry (Mozanzadeh et al., 2021). Culture and harvesting of brine shrimp eggs represents another aspect of the aquaculture industry. Nauplii and metanauplii of Artemia, commonly known as brine shrimp, play a crucial role in aquaculture due to their nutritional value and suitability as live feed for many aquatic species, particularly in larval stages (Sorgeloos & Roubach, 2021).
Equivariant neural networks and representation theory
Or: Beyond linear.
Abstract: Equivariant neural networks are neural networks that incorporate symmetries. The nonlinear activation functions in these networks result in interesting nonlinear equivariant maps between simple representations, and motivate the key player of this talk: piecewise linear representation theory.
Disclaimer: No one is perfect, so please mind that there might be mistakes and typos.
dtubbenhauer@gmail.com
Corrected slides: dtubbenhauer.com/talks.html
bordetella pertussis.................................ppt
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EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
Context. With a mass exceeding several 104 M⊙ and a rich and dense population of massive stars, supermassive young star clusters
represent the most massive star-forming environment that is dominated by the feedback from massive stars and gravitational interactions
among stars.
Aims. In this paper we present the Extended Westerlund 1 and 2 Open Clusters Survey (EWOCS) project, which aims to investigate
the influence of the starburst environment on the formation of stars and planets, and on the evolution of both low and high mass stars.
The primary targets of this project are Westerlund 1 and 2, the closest supermassive star clusters to the Sun.
Methods. The project is based primarily on recent observations conducted with the Chandra and JWST observatories. Specifically,
the Chandra survey of Westerlund 1 consists of 36 new ACIS-I observations, nearly co-pointed, for a total exposure time of 1 Msec.
Additionally, we included 8 archival Chandra/ACIS-S observations. This paper presents the resulting catalog of X-ray sources within
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were carried out using the ACIS-Extract software.
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s
−1
. The X-ray sources exhibit a highly concentrated spatial distribution,
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原版制作(carleton毕业证书)卡尔顿大学毕业证硕士文凭原版一模一样
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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
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1.5 form 4 b_moment
- 2. REMEMBER: A force is a … pull, push or twist. It is easier to undo a nut using a longer spanner than a shorter one. The force applied causes a turning effect. Moment is defined as the turning effect of a force, Diagram of spanner Moment is calculated using the formula: Moment of a force = force x perpendicular distance from pivot to line of force Exercise
- 3. STATIC EQUILIBRIUM Forces can be arranged in such a way that they balance e.g. on a see-saw. The balanced forces are in Static Equilibrium There is no net-force in static equilibrium. The vector sum of forces is equal to zero. There are two conditions for static equilibrium: 1. The sum of the clockwise moments about any point is equal to the sum of the anticlockwise moments about that point. (PRINCIPLE OF MOMENTS) This means that there is no net moment. 2. The sum of forces in one direction must equal the sum of the forces in the opposite direction. This means that: there is no net force. Solve example then exercise