Biological systems (e.g. cells) can make stochastic transitions between phenotypes (e.g. states …
Biological systems (e.g. cells) can make stochastic transitions between phenotypes (e.g. states of relatively increased or decreased drug resistance). This means that an initially drug-sensitive population can generate relatively drug-resistant subpopulations. This video presents a metronomogram, which is a tool for understanding whether such stochastic transitions can provide an opportunity for therapeutic treatment. Citation: Liao D, Estevez-Salmeron L, and Tlsty TD (2012) "Conceptualizing a tool to optimize therapy based on dynamic heterogeneity," Phys. Biol. 9:065005.
Dysprosium is element number 66 on the periodic table. This video is …
Dysprosium is element number 66 on the periodic table. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.
The video resource "The Earth: Crash Course Astronomy #11" is included in …
The video resource "The Earth: Crash Course Astronomy #11" is included in the "Astronomy" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
Earth science is the study of our home planet and all of …
Earth science is the study of our home planet and all of its components: its lands, waters, atmosphere, and interior. In this book, some chapters are devoted to the processes that shape the lands and impact people. Other chapters depict the processes of the atmosphere and its relationship to the planets surface and all our living creatures. For as long as people have been on the planet, humans have had to live within Earths boundaries. Now human life is having a profound effect on the planet. Several chapters are devoted to the effect people have on the planet. Chapters at the end of the book will explore the universe beyond Earth: planets and their satellites, stars, galaxies, and beyond.
Rapid changes at Earth's surface, largely in response to human activity, have …
Rapid changes at Earth's surface, largely in response to human activity, have led to the realization that fundamental questions remain to be answered regarding the natural functioning of the Critical Zone, the thin veneer at Earth's surface where the atmosphere, lithosphere, hydrosphere and biosphere interact. EARTH 530 will introduce you to the basics necessary for understanding Earth surface processes in the Critical Zone through an integration of various scientific disciplines. Those who successfully complete EARTH 530 will be able to apply their knowledge of fundamental concepts of Earth surface processes to understanding outstanding fundamental questions in Critical Zone science and how their lives are intimately linked to Critical Zone health.
Our planet is becoming hot. In fact, Earth may be warming faster …
Our planet is becoming hot. In fact, Earth may be warming faster than ever before. This warming will challenge society throughout the 21st century. How do we cope with rising seas? How will we prepare for more intense hurricanes? How will we adapt to debilitating droughts and heat waves? Scientists are striving to improve predictions of how the environment will change and how it will impact humans. Earth in the Future: Predicting Climate Change and Its Impacts Over the Next Century is designed to provide the state of the art of climate science, the impact of warming on humans, as well as ways we can adapt. Every student will understand the challenges and opportunities of living in the 21st century.
Students learn what causes earthquakes, how we measure and locate them, and …
Students learn what causes earthquakes, how we measure and locate them, and their effects and consequences. Through the online Earthquakes Living Lab, student pairs explore various types of seismic waves and the differences between shear waves and compressional waves. They conduct research using the portion of the living lab that focuses primarily on the instruments, methods and data used to measure and locate earthquakes. Using real-time U.S. Geological Survey (USGS) data accessed through the living lab interface, students locate where earthquakes are occurring and how frequently. Students propose questions and analyze the real-world seismic data to find answers and form conclusions. They are asked to think critically about why earthquakes occur and how knowledge about earthquakes can be helpful to engineers. A worksheet serves as a student guide for the activity.
Students learn how engineers characterize earthquakes through seismic data. Then, acting as …
Students learn how engineers characterize earthquakes through seismic data. Then, acting as engineers, they use real-world seismograph data and a tutorial/simulation accessed through the Earthquakes Living Lab to locate earthquake epicenters via triangulation and determine earthquake magnitudes. Student pairs examine seismic waves, S waves and P waves recorded on seismograms, measuring the key S-P interval. Students then determine the maximum S wave amplitudes in order to determine earthquake magnitude, a measure of the amount of energy released. Students consider how engineers might use and implement seismic data in their design work. A worksheet serves as a student guide for the activity.
Students study how geology relates to the frequency of large-magnitude earthquakes in …
Students study how geology relates to the frequency of large-magnitude earthquakes in Japan. Using the online resources provided through the Earthquakes Living Lab, students investigate reasons why large earthquakes occur in this region, drawing conclusions from tectonic plate structures and the locations of fault lines. Working in pairs, students explore the 1995 Kobe earthquake, why it happened and the destruction it caused. Students also think like engineers to predict where other earthquakes are likely to occur and what precautions might be taken. A worksheet serves as a student guide for the activity.
This lesson teaches the students about the different layers of the Earth …
This lesson teaches the students about the different layers of the Earth and how they work together. Students will be able to: Name and label the four layers of the Earth; Identify the main minerals that make up each layer; Explain how scientists formulated the idea that the Earth is comprised of four layers.
To gain an understanding of mixtures and the concept of separation of …
To gain an understanding of mixtures and the concept of separation of mixtures, students use strong magnets to find the element of iron in iron-fortified breakfast cereal flakes. Through this activity, they see how the iron component of this heterogeneous mixture (cereal) retains its properties and can thus be separated by physical means.
The video resource "Eclipses: Crash Course Astronomy #5" is included in the …
The video resource "Eclipses: Crash Course Astronomy #5" is included in the "Astronomy" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
Being able to step voltages to a higher value and step voltages …
Being able to step voltages to a higher value and step voltages down to a lower value is one of the benefits of alternating current. This book will explain how this is possible through transformers with a focus on single phase.
Paul Andersen explains how biodiversity can be measured through genetic, species, or …
Paul Andersen explains how biodiversity can be measured through genetic, species, or ecosystem variety on the planet. Species diversity is increased through speciation and decrease through extinction. The mechanism for speciation is evolution through natural selection. The planet provides ecosystem services at no cost to humanity.
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