#AskBerkeleyLab: A Pill to Treat Exposure to Radiation
Berkeley Lab chemist, Rebecca Abergel, answers a question from Oakland resident Yelena on how a pill can treat exposure to radiation.
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEA↗
SEARCH · Engineering Papers
Results for “BERKELEY LAB”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Bugs, Microbes, Biofuels, and Coffee
Berkeley Lab scientist Javier A. Ceja-Navarro discusses how his team is learning to utilize microbes that live inside the digestive tracts of insects for pest control, improved agriculture, and energy production.
59 BASIC BIOLOGICAL SCIENCES↗
BORE II
Bore II, co-developed by Berkeley Lab researchers Frank Hale, Chin-Fu Tsang, and Christine Doughty, provides vital information for solving water quality and supply problems and for improving remediation of contaminated sites. Termed "hydrophysical logging," this technology is based on the concept of measuring repeated depth profiles of fluid electric conductivity in a borehole that is pumping. As fluid enters the wellbore, its distinct electric conductivity causes peaks in the conductivity log that grow and migrate upward with time. Analysis of the evolution of the peaks enables characterization of groundwater flow distribution more quickly, more cost effectively, and with higher resolution than ever before. Combining the unique interpretation software Bore II with advanced downhole instrumentation (the hydrophysical logging tool), the method quantifies inflow and outflow locations, their associated flow rates, and the basic water quality parameters of the associated formation waters (e.g., pH, oxidation-reduction potential, temperature). In addition, when applied in conjunction with downhole fluid sampling, Bore II makes possible a complete assessment of contaminant concentration within groundwater.
Source record↗
SF Cleantech Pitchfest: Energy-Efficient Desalination
Chinmayee Subban presents her energy-efficient desalination technology at Berkeley Lab's Cleantech Pitchfest on June 1, 2016.
29 ENERGY PLANNING, POLICY, AND ECONOMY↗
SF Cleantech Pitchfest: Energy from Ocean Waves
Marcus Lehmann presents CalWave, his company that captures wave energy, at Berkeley Lab's Cleantech Pitchfest on June 1, 2016.
16 TIDAL AND WAVE POWER↗
SF Cleantech Pitchfest: Recycling CO 2 for Fuel
Kendra Kuhl presents CO 2 recycling technology developed by her company Opus 12 at Berkeley Lab's Cleantech Pitchfest on June 1, 2016.
54 ENVIRONMENTAL SCIENCES↗
Sirepo - Warp
Sirepo is an open source framework for cloud computing. The graphical user interface (GUI) for Sirepo, also known as the client, executes in any HTML5 compliant web browser on any computing platform, including tablets. The client is built in JavaScript, making use of the following open source libraries: Bootstrap, which is fundamental for cross-platform web applications; AngularJS, which provides a model–view–controller (MVC) architecture and GUI components; and D3.js, which provides interactive plots and data-driven transformations. The Sirepo server is built on the following Python technologies: Flask, which is a lightweight framework for web development; Jin-ja, which is a secure and widely used templating language; and Werkzeug, a utility library that is compliant with the WSGI standard. We use Nginx as the HTTP server and proxy, which provides a scalable event-driven architecture. The physics codes supported by Sirepo execute inside a Docker container. One of the codes supported by Sirepo is Warp. Warp is a particle-in-cell (PIC) code de-signed to simulate high-intensity charged particle beams and plasmas in both the electrostatic and electromagnetic regimes, with a wide variety of integrated physics models and diagnostics. At pre-sent, Sirepo supports a small subset of Warp’s capabilities. Warp is open source and is part of the Berkeley Lab Accelerator Simulation Toolkit.
Nagler, Robert↗
Recent Experiments At Ndcx-II: Irradiation Of Materials Using Short, Intense Ion Beams
We present an overview of the performance of the Neutralized Drift Compression Experiment-II (NDCX-II) accelerator at Berkeley Lab, and summarize recent studies of material properties created with nanosecond and millimeter-scale ion beam pulses. The scientific topics being explored include the dynamics of ion induced damage in materials, materials synthesis far from equilibrium, warm dense matter and intense beam-plasma physics. We summarize the improved accelerator performance, diagnostics and results of beam-induced irradiation of thin samples of, e.g., tin and silicon. Bunches with over 3x10^10 ions, 1- mm radius, and 2-30 ns FWHM duration have been created. To achieve these short pulse durations and mm-scale focal spot radii, the 1.2 MeV He+ ion beam is neutralized in a drift compression section which removes the space charge defocusing effect during final compression and focusing. Quantitative comparison of detailed particle-in-cell simulations with the experiment play an important role in optimizing accelerator performance; these keep pace with the accelerator repetition rate of ~1/minute.
Seidl, PA↗
Simulation of Hurricane Katrina at 3km resolution
A regional climate model simulation of Hurricane Katrina at 3 km resolution, part of a study published in Nature titled, “Anthropogenic Influences on Major Tropical Cyclone Events,” by Berkeley Lab researchers Christina Patricola and Michael Wehner. The study found that climate change intensified the amount of rainfall in recent hurricanes such as Katrina, Irma, and Maria by 5 to 10 percent.
Patricola, Christina↗
3-D Magnetization Mapping Microscope (360 video)
Science in 360°: The incredibly complex device in this video is one of the few electron microscopes worldwide that can image magnetization in 3-D, which is key to improving materials for computer memory devices. Located at Berkeley Lab's Molecular Foundry, the microscope is called SPLEEM (Spin-Polarized Low Energy Electron Microscope), and it’s one of the many reasons that scientists from around the world come to the Foundry.
47 OTHER INSTRUMENTATION↗
A 3-D Journey Through a Cell's Nucleus
This animation shows a 3-D rendering of a nucleus in a mouse cell known as a “neuronal progenitor.” The view shown here slices from the surface of the nucleus through to its other side, and is color-coded for two types of genetic material: heterochromatin (blue) and euchromatin (green). The gold color represents mitochondria, the energy production center in cells. Heterochromatin is believed to be the most tightly packed form of chromatin. Neuronal progenitor cells resemble stem cells in that they have the ability to specialize into different cell types, though with a more limited range of differentiation. (Credit: Berkeley Lab, UCSF)
59 BASIC BIOLOGICAL SCIENCES↗
A DESI ‘Petal’ in Bloom: Time-Lapse Video
This time-lapse video sequence shows how how components are assembled for a single wedge-shaped petal that is part of the Dark Energy Spectroscopic Instrument’s focal plane. This video condenses the work on this petal – which took several weeks – down to about 5 minutes. In all, the focal plane will be composed of 10 petals, each holding 500 robotic positioners. Each of these positioners carries a fiber-optic cable, and the cables will be individually pointed at preset sequences of distant galaxies to gather their light. The light signatures from these galaxies will form the basis for the largest 3-D map of the universe. Each positioner is outfitted with a 3-meter length of fiber-optic cable that will be precisely fused with a 50-meter cable. The focal plane will sit high atop the Mayall Telescope at Kitt Peak National Observatory near Tucson, Arizona. (Credit: Berkeley Lab)
47 OTHER INSTRUMENTATION↗
A New Detector – the 4D Camera – Reaches a New Frontier in Speed
An electron microscope at Berkeley Lab’s Molecular Foundry has been upgraded with a superfast detector, the 4D Camera. The detector can capture more images at a faster rate, revealing atomic-scale details across much larger areas than was possible before.
47 OTHER INSTRUMENTATION↗
Biosciences I-Corps
Six teams from Berkeley Lab’s Biosciences Area recently participated in the Spring I-Corps Short Course. This course helped the teams gain a deeper understanding of the scientific and business ecosystems around their technology and introduced the customer discovery process and business model concepts. In this video the Biosciences teams share their thoughts about their experience.
99 GENERAL AND MISCELLANEOUS↗
Building a Better Gas Mask
Berkeley Lab scientists have been putting the X-ray spotlight on composite materials in respirators used by the military, police, and first responders, work that could eventually lead to more advanced gas masks as well as protective gear for civilian applications.
36 MATERIALS SCIENCE↗
Carbon Capture Membrane Could Prevent Greenhouse Gas from Entering Atmosphere
A new, highly permeable carbon capture membrane developed by Berkeley Lab scientists could lead to more efficient ways of separating carbon dioxide from power plant exhaust, preventing the greenhouse gas from entering the atmosphere and contributing to climate change. The researchers focused on a hybrid membrane that is part polymer and part metal-organic framework, which is a porous three-dimensional crystal with a large internal surface area that can absorb enormous quantities of molecules.
36 MATERIALS SCIENCE↗
DESI Focal Plane Assembly: Time-Lapse Video
This 56-second time-lapse video shows three different camera views of assembly work for the Dark Energy Spectroscopic Instrument’s Focal Plane. First, it shows the process of joining separate lengths of fiber-optic cables, known as fusion splicing. More than 5,000 fiber-optic cables, each measuring over 50 meters, will extend from near the top of the Mayall Telescope down to devices known as spectrographs that will be used to measure the properties of light from millions of distant galaxies. The Mayall Telescope is at Kitt Peak National Observatory near Tucson, Arizona. The middle portion of the video shows another view of the focal plane assembly area, and the final camera view shows the installation of robotic positioners into a wedge-shaped “petal.” The focal plan will be composed of 10 of these petals, each carrying 500 robotic positioners. (Credit: Berkeley Lab)
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND ↗
DNA reorganization in a mouse cell's nucleus
This visualization shows tightly-packed DNA in a mouse cell's nucleus at different stages of development, from its round shape as a multipotent stem cell; to a more oval shape as it develops into a more specialized neuronal progenitor; then a more triangular form as a mature nerve cell. The final, disjointed structure in this computerized rendering shows how removing a specialized binding protein (HP1β knockout) affects the structure of the DNA-packing material, called heterochromatin. (Credit: Berkeley Lab, UCSF)
59 BASIC BIOLOGICAL SCIENCES↗