Improved Health Systems Bring Greatest Benefit For The Poor
New evidence on how to deliver health care for all — particularly in poor countries — was presented at a conference held in London. Kara Hanson of the London School of Hygiene & Tropical Medicine explained how improving the health systems which deliver care to ordinary people is needed if the health improvements made [...]
Lecture 17 - Natural Toxins in Plants and Fungi: The Ecological Biochemistry of Food - Video
The biochemical warfare of nature.
Lecture 17 - Natural Toxins in Plants and Fungi: The Ecological Biochemistry of Food - Audio
The biochemical warfare of nature.
How Plants Do it: Light, Oxygen, Action!
Ever wonder what goes on at SLAC? Here is your chance to find out. The SLAC Public Lecture Series opens the doors to the inner workings of SLAC for the local nonscientific community. Find out what SLAC is all about: the research, the facilities and the people that make this a world-class research institute. Hang around for refreshments after the talks. Physicists will be on hand to chat so bring your toughest que
Tissue engineering and stem cell technology
A lecture, "Tissue engineering and stem cell technology" given by Prof ZhanFeng Cui, University of Oxford, at the 10th OIBC Spring Symposium, held jointly with the Department for Continuing Education, at St Edward's School, Oxford, on 4 March 2009. Visit http://media.conted.ox.ac.uk/oibc2 to view the full presentation from Prof ZhanFeng Cui, including his slides.
Tissue engineering and stem cell technology
A lecture, "Tissue engineering and stem cell technology" given by Prof ZhanFeng Cui, University of Oxford, at the 10th OIBC Spring Symposium, held jointly with the Department for Continuing Education, at St Edward's School, Oxford, on 4 March 2009. Visit http://media.conted.ox.ac.uk/oibc2 to view the full presentation from Prof ZhanFeng Cui, including his slides.
The reversal of cell differentiation and prospects for cell replacement therapy
The inaugural Anne McLaren Memorial Lecture, "The reversal of cell differentiation and prospects for cell replacement therapy", given by Prof Sir John Gurdon FRS, University of Cambridge, at Lady Margaret Hall, Oxford, on 7 November 2008. Visit http://media.conted.ox.ac.uk/McLaren-2008 to view the full presentation from Professor Sir John Gurdon FRS, including his slides.
Diffusion Across a Sheep Red Blood Cell Membrane
This cell membrane physiology laboratory uses sheep red blood cells to determine: (1) the isotonic and hemolytic molar concentrations of electrolytes and nonelectrolytes, and degree of electrolyte dissociation; (2) the diffusion rate of penetrating molecules of varying size and lipid solubility; and (3) the relationship of molecular size, number of hydroxyl groups, and partition coefficient to diffusion rate. Student research teams then design an experiment using the acquired techniques to deter
Carbon Dioxide Uptake in Plants: A Computer-Aided Experimental System
This exercise introduces students to concepts of photosynthesis at the whole organism level and to computer utilization in biology. Changes in carbon dioxide concentration are measured in environmental chambers using gas analyzers connected to computers. Carbon dioxide changes are graphed in real time as the plants take up CO2. Over a short time, sunflower seedlings show dramatic changes in CO2 uptake when light intensity is altered or color filters are used. Comparison of the resulting graphs w
Cell Fractionation in Tetrahymena
To illustrate cell fractionation, nuclei are isolated from the ciliated protozoan, Tetrahymena thermophila. A table top clinical centrifuge is used for the fractionation steps and the procedure is monitored microscopically using a differential stain. To determine the efficiency of the procedure, cell and nuclear counts are determined with a hemacytometer. To quantify DNA, the Diphenylamine Reaction is carried out and the amount of DNA per nucleus is calculated.
Cell Biology and Cancer
Cancers result when genes required for normal cell function are mutated and the resulting cells undergo other changes ultimately leading to uncontrolled division. This session reveals new information on normal cell function, proto-oncogenes and tumor suppressor genes and their role in the cell cycle, and current research in drug design for specific cancers.
Blue Plants: Transgenic Plants with the GUS Reporter Gene
An investigative laboratory developed for the introductory biology curriculum using transgenic plants is presented in this chapter. The transgenic Arabidopsis plants we use contain the GUS reporter gene under the control of the cor15a gene promoter, which responds to cold stress. Following induction by cold or other environmental signals, the gusA gene will respond by producing the enzyme beta-glucuronidase (GUS). When plant tissue is incubated with the chromogenic substrate X-gluc, those tissue
Web 2.0: Risks for STI/HIV - Opportunities for Prevention
This lecture explores the risks and prevention opportunities presented by the emergence of social networking and internet dating sites. Presented by the Department of Population, Family, and Reproductive Health.
Separation Processes, Spring 2005
General principles of separation by equilibrium and rate processes. Staged cascades. Applications to distillation, absorption, adsorption, and membrane processes. Phase equilibria and role of diffusion. 10.32 will be offered for 6 units starting spring 2004.
Algal cell
This red algal cell (Chlamydomonas nivalis) gives mountain snow packs a red tint. It uses the pollutants in snow as food. It cannot be seen without a microscope.
Abundant green plants on the forest floor
Green plants make their own food by a process called photosynthesis. They also use nutrients and water from the soil to grow. Primary consumers (insects, chipmunks, mice and deer) eat green plants.
A collection of fern plants in a California forest
Ferns are the most diverse group of seedless vascular plants. The leaves are compound and contain many little leaflets. The many leaflets contain spore spots. Ferns have a true root system, unlike the bryophytes.
Haiti Benefit Show
On February 26, 2010 Dickinson students and members of the Carlisle Community hosted a concert and talent show to benefit victims of the Haitian earthquake. The event raised more than $17,000.
Musician Shankar Mahadevan on Taking Risks in Music and in Business
Musician Shankar Mahadevan on Taking Risks in Music and in Business
