2.3.4 Geophysical methods — borehole logging

If a core is not recovered from a borehole, another way to assess the types of rock that it penetrates is to measure their physical properties. Mounting a string of electronic instruments behind the drill bit most conveniently does this: it allows the properties of the rock to be monitored as the borehole is drilled. An alternative is to lower instruments down the completed borehole by cable; hence the name wireline logging.

Such logging measures several physical properties of th
Author(s): The Open University

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Internet Scout Project
This is an article appearing in the January 2002 issue of Scientific American detailing what Advanced Cell Technology (ACT) claims is the first human cloned embryo. This online version describes the research that ACT calls the "dawn of a new age in medicine" and includes links to further information, covering ethical and legal considerations surrounding cloning and the difference between reproductive and therapeutic cloning.
Author(s): Ezzell, Carol.,West, Michael D.,Lanza, R. P. (Robe

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Internet Scout Project
As a free public service, the Emergency Email and Wireless Network provides citizens with email, cell phone, or pager notifications from your local, regional, and national government sources. Users can choose to receive information about severe weather in their area; electric, gas, and water outages; daily weather forecasts; national disaster news; and more. On the registration page, visitors input their email address, home county, zip code, and the type of notification they would like, and can
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Biological membrane structure & organization
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Assembly of Proteins in Membranes I from the course General Biochemistry and Molecular Biology
General Biochemistry and Molecular Biology - Fall 2006. This course covers molecular biology of prokaryotic and eukaryotic cells and their viruses. Mechanisms of DNA replication, transcription, translation. Structure of genes and chromosomes. Regulation of gene expression. Biochemical processes and principles in membrane structure and function, intracellular trafficking and subcellular compartmentation, cytoskeletal architecture, nucleocytoplasmic transport, signal transduction mechanisms, and c
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Biological Membranes and Transport
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DNA Microarray
DNA microarray analysis is one of the fastest-growing new technologies in the field of genetic research. Scientists are using DNA microarrays to investigate everything from cancer to pest control. Now you can do your own DNA microarray experiment! Here you will use a DNA microarray to investigate the differences between a healthy cell and a cancer cell.
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Make a DNA Model
By building their own DNA model in this OLogy activity, kids learn about the unique genetic code that's found in every cell of their bodies. The activity begins with a brief look at how all living things are made of cells, and what that makes them unique is DNA. Then, using toothpicks, colored paper, and other common supplies, students create a 3-D model of DNA and "do the DNA twist" to make it look like a double spiral. Interspersed throughout the activity are kid-friendly descriptions of the d
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Cell Differentiation
In this video segment from The Secret of Life school video, "Sex and the Single Gene" follow as a single fertilized egg cell divides, differentiates, and assembles into the tissues and organs of a new organism.
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Cell Biology
Test your knowledge about cell differentiation, cell function and tissue culture.
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Two competitions: an academic competition in which middle school students answer fast-paced questions about math and science (earth, physical, life, and general science) and a model fuel cell car competition that challenges students to design, build, and race model cars.
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Antibody-protein interactions: benchmark datasets and prediction tools evaluation
Background The ability to predict antibody binding sites (aka antigenic determinants or B-cell epitopes) for a given protein is a precursor to new vaccine design and diagnostics. Among the various methods of B-cell epitope identification X-ray crystallography is one of the most reliable methods. Using these experimental data computational methods exist for B-cell epitope prediction. As the number of structures of antibody-protein complexes grows, further interest in prediction methods using 3D s
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Road traffic is a challenging societal problem, and with the increasing crowding of areas in and around cities, it is only becoming worse. With the proliferation of wireless connectivity, smartphones (think cheap embedded computers), it is now possible to continuously monitor urban areas using mobile sensors carried by people
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8 Multiple plate collisions and the end of the Iapetus Ocean

The document attached below includes the eighth section of Mountain building in Scotland. In this section, you will find the following subsections:

  • 8.1 Introduction

  • 8.2 Palaeocontinental reconstructions

    • 8.2.1 The global view

    • 8.2.2 A model for the closure of the Iapetus Ocean

    • 8.2.3 Summary of Section 8.2

  • 8.3 Tectonics of the Northe
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Choral Evensong: 11 Mar 2009
Choral Evensong sung by Merton College Choir in Merton College Chapel on Wednesday 11 March 2009. Responses: Smith Canticles: Second Service (William Byrd) Anthem: When David heard (Thomas Tomkins) Voluntary: Fantasia in A minor (William Byrd) Directors of Music: Benjamin Nicholas and Peter Phillips Organ Scholar: Natasha Tyrwhitt-Drake Chaplain: The Revd Dr Simon Jones
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Human Cloning and Human Rights: Promises and Perils
Ignore the noisy debate around cloning, Rudolf Jaenisch quietly insists, and instead look closely at the biology involved. First, note that there are two different kinds of cloning: reproductive cloning, the attempt to create an exact replica of a human being, which Jaenisch believes to be both biologically flawed and morall
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