Signals From Within Chemists' knowledge of the interaction of radiation and matter is the basis for analytical methods of sensitivity and specificity. Scientists can determine the structure of a molecule by various means, including molecular probes such as radiation. Spectroscopy allows scientists to analyze matter.
HX to Alkene Reaction
Video discusses the first two electrophilic addition reactions. The first one is addition of HX to an alkene. The second one is hydration reaction. Each one of these is explained.
Halogen Addition Reaction
Let's take a closer look at the Halogen Addition Reaction. Video discusses vocabulary such as, halogen, solvent, non-reactive solvent, and how to add the halogens.
Opposition to the Treaty of Versailles in the USA
President Woodrow Wilson felt optimistic about returning to America with the completed Treaty of Versailles. His return, however, was marked with a mixed reaction from the public and the Congress. Initially, Republican Senator Henry Cabot Lodge, who had ardently opposed the treaty, had little hope of defeating it in the Senate. Instead, Lodge and other Republican Senators hoped to amend the treaty, so that they could take credit for the changes. These individuals were known as “reservationists
How to Write a Story Plot
A professional teacher teaches how to write a story plot by outlining a list of events that will lead to a climax, developing dynamic characters, starting at the end of the story and working towards the beginning. Create a plot, which is characterized as an arrangement of incidents.
1968 King Assassination Report
Walter Cronkite had almost finished broadcasting the "CBS Evening News" when he received word of Martin Luther King's assassination. His report detailed the shooting and the nation's reaction to the tragedy. (CBSNews.com)
The Nature of Water
This video is accompanied by text: "A key theme in biology is the relationship between structure and function. In order to appreciate the chemical and physical properties of water, we need to understand its molecular structure.
The chemical formula of water is H-2-O, meaning that each molecule of water contains two hydrogen atoms and one oxygen atom. Each hydrogen atom is connected to the oxygen atom with a covalent bond..."
Organic Chemistry: Haloalkane Synthesis
This video describes reaction between tetrahydrofuran and excess HBr. Bromine itself is a very large atom and it spreads the negative charge over that large area which pushes the hydrogen further away from it, making it more vulnerable to attack. Tetrahydrofuran is a very reactive molecule because you are forcing the oxygen into a crowded position with electrons. Those electrons are going to be looking to jump off onto anything they can to go into a lower energy state... Run time 01:44.
Agent Based Modeling of Complex Adaptive Systems (basics)
Our human society consists of many intertwined Large Scale Socio-Technical Systems (LSSTS), such as infrastructures, industrial networks, the financial systems etc. Environmental pressures created by these systems on Earth’s carrying capacity are leading to exhaustion of natural resources, loss of habitats and biodiversity, and are causing a resource and climate crisis. To avoid this sustainability crisis, we urgently need to transform our production and consumption patterns. Given that we, as
Detection of an endogenous serine protease, inhibition of exterior serine proteases and a novel micr
Serine Proteases are a class of proteolytic enzymes whose catalytic mechanism is based on an active-serine reside. 4-(2-Aminoethyl)-benzene sulfonyl fluoride (AEBSF) forms a covalent bond with the active serine residue in serine proteases. Alpha-Thrombin, a serine protease, activated platelet aggregation was completely inhibited by AEBSF, as expected. Platelet aggregations that were activated by non-proteolytic agonists, activating agents that do not contain an active serine residue for AEBSF to
Online information retrieval: identification of measures that discriminate among users with differen
The major goal of this research was to discover those behaviors associated with the process of online bibliographic searching that are correlated with success. In the assumption that more experienced searchers are more successful, the major research objectives were to identify (1) the differences among the searches of users of online systems who have different amounts of overall experience and (2) the differences between the searches of persons with and without experience on the data base being
Introduction to Newton's Three Laws - Lesson 1
This NASA video segment explores how Newton's Laws of Motion apply to the development and operation of airplanes. Viewers watch an instructor at NASA's National Test Pilot School as he describes and then demonstrates why seatbelts are an important force on pilots; what it means to pull 2, 4 and even 6 g in a jet; and how the thrust of a jet engine causes an aircraft to move forward. Formulas are presented onscreen along with the calculations discussed in the segment. For example, the instructor
Animated Chemistry Tutorials and Models
Windows Recommended. Animated Tutorials for generating Lewis Structures and applyiing VSEPR theory. Visualization of Valence Bonds in Lewis structures. Animations of Phase Diagram, Heating/Cooling Curves, Hybridization and Water. Animation of Diatomic Molecular Orbitals Construction
Redstockings, Riot Grrls, Three Generation of Feminism in Conversation
Jennifer Baumgardner and Amy Richards, authors of Manifesta: Young Women, Feminism, and the Future, lead a dynamic panel of feminists including Alix Kates Shulman, Farai Chideya, and Marisa Meltzer in a discussion of where feminism is today and where it needs to go in the twenty-first century. This event took place at the Elizabeth A. Sackler Center for Feminist Art on March 20, 2010. Video courtesy Elizabeth A. Sackler Foundation.
Poetry Out Loud: 2010 National Book Festival
This program encourages high school students to memorize and perform great poems. Poetry Out Loud invites the dynamic aspects of slam poetry,spoken word and theater into the English class. This exciting program helps students master public speaking skills, build confidence, and learn about their literary heritage.
Crowds and Clouds: Data, Sheep, and Collaboration in the Works of Aaron Koblin
Where others see just data points and fodder for bar graphs, Aaron Koblin visualizes dynamic systems where information assumes forms both abstract and familiar. In this talk, Koblin shares recent projects that meld statistical science and art to convey a really big picture, while often inviting the viewer to partake in a more perso
5.2 Wilberforce’s anti-slavery campaign in context
William Wilberforce, the politician and religious writer, was instrumental in the abolition of slavery in Britain in 1807. This unit explores Wilberforce’s career and writings and assesses their historical significance. In particular it examines the contribution that Evangelicalism, the religious tradition to which Wilberforce belonged, made in the transitions between the Enlightenment and Romanticism. Throughout it relates Wilberforce’s career and writings to wider social and cultural devel
5.1 Leading the fight against slavery
William Wilberforce, the politician and religious writer, was instrumental in the abolition of slavery in Britain in 1807. This unit explores Wilberforce’s career and writings and assesses their historical significance. In particular it examines the contribution that Evangelicalism, the religious tradition to which Wilberforce belonged, made in the transitions between the Enlightenment and Romanticism. Throughout it relates Wilberforce’s career and writings to wider social and cultural devel
4.5 The interaction of religion and society
William Wilberforce, the politician and religious writer, was instrumental in the abolition of slavery in Britain in 1807. This unit explores Wilberforce’s career and writings and assesses their historical significance. In particular it examines the contribution that Evangelicalism, the religious tradition to which Wilberforce belonged, made in the transitions between the Enlightenment and Romanticism. Throughout it relates Wilberforce’s career and writings to wider social and cultural devel
4.4 Political implications
William Wilberforce, the politician and religious writer, was instrumental in the abolition of slavery in Britain in 1807. This unit explores Wilberforce’s career and writings and assesses their historical significance. In particular it examines the contribution that Evangelicalism, the religious tradition to which Wilberforce belonged, made in the transitions between the Enlightenment and Romanticism. Throughout it relates Wilberforce’s career and writings to wider social and cultural devel
