Biotic Indices of Stream Macroinvertebrates for Fun and (Educational) Profit
Water quality monitoring activities can support student inquiry into ecological concepts and pollution issues, as well as offer insight into integrating field and lab work. This exercise provides students with practice in identification (to order or family level) of stream macroinvertebrates that they've previously collected. Provided information indicates water pollution tolerance of the various taxa. Students use the data to calculate several different biotic indices for the macroinvertebrates
Building Molecular Models of DNA, Protein, and Lipids
Molecular models of DNA, protein (alpha-helix and beta-pleated sheet), and lipids are built to scale. With a minimum of scientific jargon, these laboratory exercises effectively display the important aspects of three-dimensional shape and spatial orientation that are poorly presented in textbook illustrations and demonstrate how the shape of molecules and weak chemical associations like hydrogen bonds and hydrophobic/hydrophilic interactions combine to form the macromolecular associations fundam
Regulation of Blood Glucose Levels in Normal and Diabetic Rats
This exercise demonstrates the crucial role insulin plays in blood glucose homeostasis in mammals. Three pairs of fasted rats are tested in each of three different regimes; one rat of each pair is normal and the other is diabetic. The first pair is administered an oral glucose load and a placebo injection of saline. The second pair is administered an oral glucose load and an insulin injection. The third pair is administered an oral placebo of water and a placebo injection of saline. The blood gl
Moral and ethical principles in end of life care
In many areas of health care, and especially in such areas as palliative care, increasing attention has been paid in recent years to patient autonomy, and the need to respect it. Autonomy has come to be seen as a very important aspect of the interaction between patients and those looking after them, and forms the basis for many ethical commitments, such as telling the truth to patients, and seeking their consent for health care interventions. In this unit we look at quite a wide range of ethical
Boy on trampoline
The boy would feel less secure if the safety net around the trampoline wasn't there. Humans have an innate need to feel secure in their environments.
Balance and flux
Ecosystems and populations of organisms within ecosystems function by the principle of balance and flux. Balance can be thought of as a state of equilibrium, or a state of equal changes between two sides. Flux can be thought of as a rate of flow or changes. Even small changes in an ecosystem's or population's balance and flux could lead to disaster.
Artemia blood circulation
Artemia blood circulation in the head and around the gut.
Human arm muscles are connected to the bones by things called tendons. Tendons are rope-like fibers that join muscles to bones and allow movement.
One reason why ticks are considered to be arachnids is because they do not have antennae like insects do. Ticks suck blood from animals and are sometimes difficult to remove from the host's skin.
Apple Screen 1
The apple has just fallen from the tree and rests on the ground.
Roots can grow in multiple directions. Just because this plant was in a cup didn't stop the roots from growing longer and creating individual branches.
Land snails are invertebrates because they do not have a backbone. They are related to water snails, but they do not live in water.
Actual Precipitation from SSM-I: January 1997 through May 1998
Actual Precipitation using SSM-I data from 1-97 to 5-98
Support Animations-Stills for SOLVE
Animation of a CFC molecule being split by a photon
Cloud Cover over Borneo: March 1, 1998
Cloud cover over Borneo for March 1, 1998 superimposed over a topographic image
Numerical Simulation of Magnetic Flux Emerging Through a Model Solar Atmosphere: Density, Magnetic F
This animation is one of a series depicting the results of a two-dimensional ideal magneto-hydrodynamic simulation of magnetic flux emerging through a solar atmosphere. The simulation has a resolution of 300x500 cells and a length scale of 16 Mm x 6.8 Mm. The simulation depicts 1730 seconds in the evolution of the model.
El Nino-La Nina Sea Surface Temp and Height Anomaly 3D Isometric View: January 1997 through November
An animation of sea surface temperature and height anomalies in the Pacific for January 1997 through November 1998 from NOAA AVHRR and TOPEX Poseidon
North America NDVI 1993 August
NDVI in North America for August 1993, based off data collected over the 1981-2000 time frame.
1993 Daily Ozone from Meteor-3
In this animation of total ozone, the luminance values of the colors bounding areas of missing data are used in interpolating over these regions. The missing data are mapped to the grayscale portion of the color map.
Water and Sanitation Needs in Complex Humanitarian Emergencies
Presents a historical overview of the influence of water and sanitation on human health; types of water and sanitation facilities and equipment presently available and particularly suited to refugee populations displaced by war, famine, drought, and economic turmoil; and methodologies for assessing and quantifying water and sanitation needs.