Making Most of the Absorbed Photon: New Insights into Carrier Multiplication in Semiconductor Nanostructures

submitted by: RASEIBoulder
Carrier multiplication (CM) or multiexciton generation (MEG) is a process whereby absorption of a single photon produces multiple electron-hole pairs (excitons). CM could benefit a number of solar-energy conversion technologies, most notably photocatalysis and photovoltaics. This presentation overviews recent progress in understanding of the CM process in semiconductor nanocrystals, motivated by an outstanding challenge in this field - the lack of capability to quickly discern between...

Endothelin-1 is a transcriptional target of p53 in epidermal keratinocytes and regulates UV induced melanocyte homeostasis

submitted by: arup.indra
Keratinocytes contribute to melanocyte activity by influencing their microenvironment, in part, through secretion of paracrine factors. Here we discovered that p53 directly regulates Edn1 expression in epidermal keratinocytes and controls UV-induced melanocyte homeostasis. Selective ablation of EDN1 in murine epidermis (EDN1ep-/-) does not alter melanocyte homeostasis in newborn skin but decreases dermal melanocytes in adult skin. Results showed that keratinocytic EDN1 in a non-cell...
Authors: Daniel J. Coleman, Gitali Ganguli-Indra, Stephen Hyter, Arup Indra, Steven Ma, Gary F. Merrill, Masashi Yanagisawa

Systems as the Driver for Synthetic Biology

submitted by: RASEIBoulder
We now possess the ability to read and write DNA. These tools are not only revolutionizing biotechnology but also the basic life sciences as well. The challenge is that we are still learning the grammar. In other words, we often do not know which genetic perturbations to make in order to alter the behavior of an organism. As a result, synthetic biology still involves much trial and error. Moreover, we are still far from the point where we can engineer new organisms from scratch – rather,...

MWV Episode 66 - Curtis Suttle: Marine Virology

submitted by: MicrobeWorld
In MicrobeWorld Video episode 66 Dr. Stan Maloy talks with Curtis Suttle, Professor of Earth & Ocean Sciences, Microbiology & Immunology, and Botany, and Associate Dean of Science University of British Columbia. Dr. Suttle is one of the World's leading marine virologists, and is among a small group of researchers that is credited with launching the field of marine virology. Dr. Maloy talks with Dr. Suttle about the incredible diversity of the ocean's microscopic inhabitants that...

Aptamer Data from Base Pair Biotechnologies

submitted by: BasePairBio

Aptamers have until recently been tightly held by IP restrictions, Base Pair Biotechnologies Founder Bill Jackson presents information and data they have generated on aptmers in diverse assays such as biosensor and lateral flow. Presentation is from the American Society for Cell Biology meeting Dec 16, 2012

How Harvester Ant Colonies use Interaction Networks to Regulate Foraging

submitted by: icamvid

How Harvester Ant Colonies use Interaction Networks to Regulate Foraging by Deborah Gordon, Stanford University, USA
Soft Active Materials
May 18, 2009 – May 21, 2009
Syracuse University, New York