WorldWideScience

Sample records for asteroids digging soil

  1. Landing screw-rockets array on asteroids, digging soil and fueling engines in phase, to overcome the spin and to fly in space

    CERN Document Server

    Fargion, D

    2007-01-01

    To deflect impact-trajectory of massive km^3 and spinning asteroid by a few terrestrial radiuses one need a large momentum exchange. The dragging of huge spinning bodies in space by external engine seems difficult or impossible. Our solution is based on the landing of multi screw-rockets, powered by mini-nuclear engines, on the body, that dig a small fraction of the soil surface, to use as an exhaust propeller, ejecting it vertically in phase among themselves. Such a mass ejection increases the momentum exchange, their number redundancy guarantes the stability of the system. The soft landing of engine-unity may be easely achieved at low asteroid gravity. The engine array tuned activity, overcomes the asteroid angular velocity. Coherent turning of the jet heads increases the deflection efficiency. A procession along its surface may compensate at best the asteroid spin. A small skin-mass (about 2 10^4 tons) may be ejected by mini nuclear engines. Such prototypes may build first save galleries for humans on the ...

  2. Dynamics of digging in wet soil

    CERN Document Server

    Jung, Sunghwan; Hosoi, A E

    2010-01-01

    Numerous animals live in, and locomote through, subsea soils. To move in a medium dominated by frictional interactions, many of these animals have adopted unique burrowing strategies. This paper presents a burrowing model inspired by the Atlantic razor clam ({\\it Ensis directus}), which uses deformations of its body to cyclically loosen and re-pack the surrounding soil in order to locally manipulate burrowing drag. The model reveals how an anisotropic body -- composed of a cylinder and sphere varying sinusoidally in size and relative displacement -- achieves unidirectional motion through a medium with variable frictional properties. This net displacement is attained even though the body kinematics are reciprocal and inertia of both the model organism and the surrounding medium are negligible. Our results indicate that body aspect ratio has a strong effect on burrowing velocity and efficiency, with a well-defined maximum for given kinematics and soil material properties.

  3. Structural Bionic Design for Digging Shovel of Cassava Harvester Considering Soil Mechanics

    Directory of Open Access Journals (Sweden)

    Shihao Liu

    2014-01-01

    Full Text Available In order to improve the working performance of cassava harvester, structural bionic design for its digging shovel was conducted. Taking the oriental mole cricket's paws as bionic prototype, a new structural bionic design method for digging shovel was established, which considers the morphology-configuration-function coupling bionic. A comprehensive performance comparison method was proposed, which is used to select the bionic design schemes. The proposed bionic design method was used to improve digging shovel structure of a digging-pulling style cassava harvester, and nine bionic-type digging shovels were obtained with considering the impact of soil mechanics. After conducting mechanical properties comparative analysis for bionic-type digging shovels, the bionic design rules were summed up, and the optimal design scheme of digging shovel was obtained through combining the proposed comprehensive performance comparison method with Analytic Hierarchy Process (AHP. Studies have shown that bionic design method not only can improve the overall mechanical properties of digging shovel, but also can help to improve the harvesting effect of cassava harvester, which provides a new idea for crops harvesting machinery's structural optimization design.

  4. Morphological adaptations for digging and climate-impacted soil properties define pocket gopher (Thomomys spp. distributions.

    Directory of Open Access Journals (Sweden)

    Ariel E Marcy

    Full Text Available Species ranges are mediated by physiology, environmental factors, and competition with other organisms. The allopatric distribution of five species of northern Californian pocket gophers (Thomomys spp. is hypothesized to result from competitive exclusion. The five species in this environmentally heterogeneous region separate into two subgenera, Thomomys or Megascapheus, which have divergent digging styles. While all pocket gophers dig with their claws, the tooth-digging adaptations of subgenus Megascapheus allow access to harder soils and climate-protected depths. In a Northern Californian locality, replacement of subgenus Thomomys with subgenus Megascapheus occurred gradually during the Pleistocene-Holocene transition. Concurrent climate change over this transition suggests that environmental factors--in addition to soil--define pocket gopher distributional limits. Here we show 1 that all pocket gophers occupy the subset of less energetically costly soils and 2 that subgenera sort by percent soil clay, bulk density, and shrink-swell capacity (a mineralogical attribute. While clay and bulk density (without major perturbations stay constant over decades to millennia, low precipitation and high temperatures can cause shrink-swell clays to crack and harden within days. The strong yet underappreciated interaction between soil and moisture on the distribution of vertebrates is rarely considered when projecting species responses to climatic change. Furthermore, increased precipitation alters the weathering processes that create shrink-swell minerals. Two projected outcomes of ongoing climate change--higher temperatures and precipitation--will dramatically impact hardness of soil with shrink-swell minerals. Current climate models do not include factors controlling soil hardness, despite its impact on all organisms that depend on a stable soil structure.

  5. Spatial variability of soil electrical conductivity under the mole rats (Spalax microphthalmus digging activity at the different scales

    Directory of Open Access Journals (Sweden)

    A. V. Zhukov

    2012-07-01

    Full Text Available The soil mounds emerged owing to the mole rats’ digging activity have been shown to be characterised by less electrical conductivity than surrounded soil. This effect is due to the changes of the mounds bulk’s density and moisture. The effect of the mole rats’ digging activity on the soil electrical conductivity has been found not to be restricted by the geometrical border of the mounds. The mounds are surrounded by 1–1.5 m halo of increased soil electrical conductivity. The halo size is increased with the aging of the mound and with the compacting of their aggregation.

  6. SSSA Outreach: Dig It: The Secrets of Soil, Public Service Announcements, and Science Policy Efforts

    Science.gov (United States)

    Pierzynski, Gary M.; Megonigal, Patrick; Glasener, Karl; Bergfeld, Ellen; Brevik, Eric

    2013-04-01

    The Soil Science Society of America has invested heavily in two significant outreach efforts to help raise awareness of the soil resource among the general public and with elected officials and relevant federal agencies in Washington DC. Dig It: The Secrets of Soil began as an exhibit at the Smithsonian National Museum of Natural History and ran from July 2008 through January 2010. The exhibit was rich in the use of audio-visual elements and contained a collection of the state soils from all 50 states and numerous interactive displays for all ages. Variations of the exhibit have been on display at three locations outside of Washington DC with the current location being the Bell Museum of Natural History in Minneapolis. The exhibit has been extremely successful in elevating awareness of soils to audiences with little preconceived knowledge on the subject. The success of the Dig It exhibit encouraged SSSA to further invest in three public service announcements that have been widely distributed with 570 downloads and >17,000 views (in English and Spanish) on YouTube and the I "Heart" Soil web site. In addition, I "Heart" Soil stickers were developed and >50,000 have been requested and distributed. Our Science Policy Office has recently been expanded based on evidence of positive impact in Washington DC. The formation of the Congressional Soils Caucus has increased awareness of soils within the House of Representatives and is being expanded to the Senate. A new Urban Lands Coalition has been developed that will greatly expand awareness of the value of soils in urban environments, particularly for elected officials. The Science Policy office organizes member visits with elected officials to advocate for science funding, agency visits to promote awareness of the discipline among a wide ranging of funding sources for research, has had substantial impact on a number of high profile reports, and works closely with allied scientific and professional organizations with common

  7. Digging Soil Experiments for Micro Hydraulic Excavators based on Model Predictive Tracking Control

    Science.gov (United States)

    Tomatsu, Takumi; Nonaka, Kenichiro; Sekiguchi, Kazuma; Suzuki, Katsumasa

    2016-09-01

    Recently, the increase of burden to operators and lack of skilled operators are the issue in the work of the hydraulic excavator. These problems are expected to be improved by autonomous control. In this paper, we present experimental results of hydraulic excavators using model predictive control (MPC) which incorporates servo mechanism. MPC optimizes digging operations by the optimal control input which is calculated by predicting the future states and satisfying the constraints. However, it is difficult for MPC to cope with the reaction force from soil when a hydraulic excavator performs excavation. Servo mechanism suppresses the influence of the constant disturbance using the error integration. However, the bucket tip deviates from a specified shape by the sudden change of the disturbance. We can expect that the tracking performance is improved by combining MPC and servo mechanism. Path-tracking controls of the bucket tip are performed using the optimal control input. We apply the proposed method to the Komatsu- made micro hydraulic excavator PC01 by experiments. We show the effectiveness of the proposed method through the experiment of digging soil by comparing servo mechanism and pure MPC with the proposed method.

  8. ASTEROIDS

    Directory of Open Access Journals (Sweden)

    Željko Andreić

    2016-02-01

    Full Text Available Asteroids are the largest minor bodies in the Solar System. Nowadays they are in the research focus due to several facts about them: first, a subclass of asteroids can collide with Earth, and consequences of such a collision are dramatic. Second, they are now seen as source of materials that are becoming scarce on Earth, and they will be needed in future space constructions anyway. Third, they are holding clues about the origin and evolution of the Solar System. In this article, a short overview of current knowledge about asteroids is presented. Last, but not least, as several Croatian scientists were recently honored by naming an asteroid after them, a short overview of the naming process is given.

  9. Students Dig Deep in the Mystery Soil Lab: A Playful, Inquiry-Based Soil Laboratory Project

    Science.gov (United States)

    Thiet, Rachel K.

    2014-01-01

    The Mystery Soil Lab, a playful, inquiry-based laboratory project, is designed to develop students' skills of inquiry, soil analysis, and synthesis of foundational concepts in soil science and soil ecology. Student groups are given the charge to explore and identify a "Mystery Soil" collected from a unique landscape within a 10-mile…

  10. ASTEROIDS

    OpenAIRE

    Željko Andreić

    2016-01-01

    Asteroids are the largest minor bodies in the Solar System. Nowadays they are in the research focus due to several facts about them: first, a subclass of asteroids can collide with Earth, and consequences of such a collision are dramatic. Second, they are now seen as source of materials that are becoming scarce on Earth, and they will be needed in future space constructions anyway. Third, they are holding clues about the origin and evolution of the Solar System. In this article, a short overv...

  11. Digging deeper - How soil biota drive and respond to plant invasions

    NARCIS (Netherlands)

    Shelby, Natasha; Duncan, Richard P.; Putten, Van Der Wim H.; Mcginn, Kevin J.; Weser, Carolin; Hulme, Philip E.

    2016-01-01

    1. The performance of introduced plants can be limited by the availability of soil mutualists outside their native range, but how interactions with mutualists differ between ranges is largely unknown. If mutualists are absent, incompatible or parasitic, plants may compensate by investing more in roo

  12. Digging the New York City Skyline: soil fungal communities in green roofs and city parks.

    Science.gov (United States)

    McGuire, Krista L; Payne, Sara G; Palmer, Matthew I; Gillikin, Caitlyn M; Keefe, Dominique; Kim, Su Jin; Gedallovich, Seren M; Discenza, Julia; Rangamannar, Ramya; Koshner, Jennifer A; Massmann, Audrey L; Orazi, Giulia; Essene, Adam; Leff, Jonathan W; Fierer, Noah

    2013-01-01

    In urban environments, green roofs provide a number of benefits, including decreased urban heat island effects and reduced energy costs for buildings. However, little research has been done on the non-plant biota associated with green roofs, which likely affect their functionality. For the current study, we evaluated whether or not green roofs planted with two native plant communities in New York City functioned as habitats for soil fungal communities, and compared fungal communities in green roof growing media to soil microbial composition in five city parks, including Central Park and the High Line. Ten replicate roofs were sampled one year after planting; three of these roofs were more intensively sampled and compared to nearby city parks. Using Illumina sequencing of the fungal ITS region we found that green roofs supported a diverse fungal community, with numerous taxa belonging to fungal groups capable of surviving in disturbed and polluted habitats. Across roofs, there was significant biogeographical clustering of fungal communities, indicating that community assembly of roof microbes across the greater New York City area is locally variable. Green roof fungal communities were compositionally distinct from city parks and only 54% of the green roof taxa were also found in the park soils. Phospholipid fatty acid analysis revealed that park soils had greater microbial biomass and higher bacterial to fungal ratios than green roof substrates. City park soils were also more enriched with heavy metals, had lower pH, and lower quantities of total bases (Ca, K, and Mg) compared to green roof substrates. While fungal communities were compositionally distinct across green roofs, they did not differentiate by plant community. Together, these results suggest that fungi living in the growing medium of green roofs may be an underestimated component of these biotic systems functioning to support some of the valued ecological services of green roofs.

  13. Digging the New York City Skyline: soil fungal communities in green roofs and city parks.

    Directory of Open Access Journals (Sweden)

    Krista L McGuire

    Full Text Available In urban environments, green roofs provide a number of benefits, including decreased urban heat island effects and reduced energy costs for buildings. However, little research has been done on the non-plant biota associated with green roofs, which likely affect their functionality. For the current study, we evaluated whether or not green roofs planted with two native plant communities in New York City functioned as habitats for soil fungal communities, and compared fungal communities in green roof growing media to soil microbial composition in five city parks, including Central Park and the High Line. Ten replicate roofs were sampled one year after planting; three of these roofs were more intensively sampled and compared to nearby city parks. Using Illumina sequencing of the fungal ITS region we found that green roofs supported a diverse fungal community, with numerous taxa belonging to fungal groups capable of surviving in disturbed and polluted habitats. Across roofs, there was significant biogeographical clustering of fungal communities, indicating that community assembly of roof microbes across the greater New York City area is locally variable. Green roof fungal communities were compositionally distinct from city parks and only 54% of the green roof taxa were also found in the park soils. Phospholipid fatty acid analysis revealed that park soils had greater microbial biomass and higher bacterial to fungal ratios than green roof substrates. City park soils were also more enriched with heavy metals, had lower pH, and lower quantities of total bases (Ca, K, and Mg compared to green roof substrates. While fungal communities were compositionally distinct across green roofs, they did not differentiate by plant community. Together, these results suggest that fungi living in the growing medium of green roofs may be an underestimated component of these biotic systems functioning to support some of the valued ecological services of green roofs.

  14. Discussion on counter-digging and backfill methods of low filling soil roadbed%谈低填方土质路基工程反挖回填施工方法

    Institute of Scientific and Technical Information of China (English)

    赵伟

    2012-01-01

    Combining with roadbed counter-digging and backfill engineering at contraction section of national highway line No. 208 reconstruction project, this thesis introduces counter-digging and backfill methods of low filling soil roadbed, and summarizes some technological points, which has laid a foundation for the application of counter-digging method in roadbed engineering.%结合国道208线改建工程某合同段路基反挖回填工程施工实例,介绍了低填方土质路基反挖回填施工方法,并总结了一些技术要点,为推广该施工方法在路基工程中的应用奠定了基础。

  15. Kidnapping small icy asteroids in Earth near encounter to harbour life and to deflect trajectory

    Science.gov (United States)

    Fargion, Daniele

    2016-07-01

    The inter-planetary flight for human being is under danger because of unscreened and lethal solar flare radioactive showers. The screening of the astronauts by huge superconducting magnetic fields is unrealistic by many reasons. On the contrary the ability to reach nearby icy asteroids, to harbour there a complete undergound room where ecological life systems are first set, this goal may offer a later natural and safe currier for future human stations and enterprise. The need to deflect such a small size (a few thousands tons objects) maybe achieved by micro nuclear engines able to dig the asteroid icy skin, to heat and propel the soil by a synchronous jet engine array, bending and driving it to any desired trajectories. The need for such a wide collection of icy asteroid stations, often in a robotic ibernated state, it will offer the safe help station, raft in the wide space sea, where to collect material or energy in long human planetary travels.

  16. Test dig selv!

    DEFF Research Database (Denmark)

    Hølge-Hazelton, Bibi; Nielsen, Gregers; Langstrup, Henriette

    2011-01-01

    Teknologirådet omkring rapporten ”Test dig selv! – Vurderinger og anbefalinger vedrørende anvendelse medicinsk udstyr til selvtestning. Offentliggjort d. 25.10.11.......Teknologirådet omkring rapporten ”Test dig selv! – Vurderinger og anbefalinger vedrørende anvendelse medicinsk udstyr til selvtestning. Offentliggjort d. 25.10.11....

  17. Digging of 'Snow White' Begins

    Science.gov (United States)

    2008-01-01

    NASA's Phoenix Mars Lander began excavating a new trench, dubbed 'Snow White,' in a patch of Martian soil located near the center of a polygonal surface feature, nicknamed 'Cheshire Cat.' The trench is about 2 centimeters (.8 inches) deep and 30 centimeters (about 12 inches) long. The 'dump pile' is located at the top of the trench, the side farthest away from the lander, and has been dubbed 'Croquet Ground.' The digging site has been named 'Wonderland.' At this early stage of digging, the Phoenix team did not expect to find any of the white material seen in the first trench, now called 'Dodo-Goldilocks.' That trench showed white material at a depth of about 5 centimeters (2 inches). More digging of Snow White is planned for coming sols, or Martian days. The dark portion of this image is the shadow of the lander's solar panel; the bright areas within this region are not in shadow. Snow White was dug on Sol 22 (June 17, 2008) with Phoenix's Robotic Arm. This picture was acquired on the same day by the lander's Surface Stereo Imager. This image has been enhanced to brighten shaded areas. The Phoenix Mission is led by the University of Arizona, Tucson, on behalf of NASA. Project management of the mission is by NASA's Jet Propulsion Laboratory, Pasadena, Calif. Spacecraft development is by Lockheed Martin Space Systems, Denver.

  18. Asteroid thermophysical modeling

    CERN Document Server

    Delbo, Marco; Emery, Joshua P; Rozitis, Ben; Capria, Maria Teresa

    2015-01-01

    The field of asteroid thermophysical modeling has experienced an extraordinary growth in the last ten years, as new thermal infrared data became available for hundreds of thousands of asteroids. The infrared emission of asteroids depends on the body's size, shape, albedo, thermal inertia, roughness and rotational properties. These parameters can therefore be derived by thermophysical modeling of infrared data. Thermophysical modeling led to asteroid size estimates that were confirmed at the few-percent level by later spacecraft visits. We discuss how instrumentation advances now allow mid-infrared interferometric observations as well as high-accuracy spectro-photometry, posing their own set of thermal-modeling challenges.We present major breakthroughs achieved in studies of the thermal inertia, a sensitive indicator for the nature of asteroids soils, allowing us, for instance, to determine the grain size of asteroidal regoliths. Thermal inertia also governs non-gravitational effects on asteroid orbits, requir...

  19. Second Dig and Dump Test

    Science.gov (United States)

    2008-01-01

    The Robotic Arm took a second scoop full of soil and revealed whitish material at the bottom of the dig area informally called the 'Knave of Hearts'. The Science Team is debating whether this is a salt layer or the top of an ice table. Image was taken by the Surface Stereo Imager on the ninth day of the Mars mission, or Sol 9, (June 3, 2008) aboard the NASA Phoenix Mars Lander. The Phoenix Mission is led by the University of Arizona, Tucson, on behalf of NASA. Project management of the mission is by NASA's Jet Propulsion Laboratory, Pasadena, Calif. Spacecraft development is by Lockheed Martin Space Systems, Denver.

  20. Asteroid mining

    Science.gov (United States)

    Gertsch, Richard E.

    1992-01-01

    The earliest studies of asteroid mining proposed retrieving a main belt asteroid. Because of the very long travel times to the main asteroid belt, attention has shifted to the asteroids whose orbits bring them fairly close to the Earth. In these schemes, the asteroids would be bagged and then processed during the return trip, with the asteroid itself providing the reaction mass to propel the mission homeward. A mission to one of these near-Earth asteroids would be shorter, involve less weight, and require a somewhat lower change in velocity. Since these asteroids apparently contain a wide range of potentially useful materials, our study group considered only them. The topics covered include asteroid materials and properties, asteroid mission selection, manned versus automated missions, mining in zero gravity, and a conceptual mining method.

  1. Asteroid Redirect

    OpenAIRE

    De Aquino, Fran

    2017-01-01

    Asteroids are a great threat to mankind. Here we will show that it is possible to redirect them from their trajectories by means of a strong gravitational repulsion, produced by the gravitational interaction between the asteroid and a Gravitational Spacecraft positioned close to the asteroid.

  2. DigDag

    DEFF Research Database (Denmark)

    Knudsen, Bo Nissen

    registers in Denmark use, among others, geographical/administrative entrances. The entrance is usually a topographical code (e.g. settlement, parish) or local authority jurisdiction (e.g. customs service, police districts). Due to changes in the administrative divisions, most of the geocodes are unique...... to each archive, or archival system. The DigDag project establishes a uniform research infrastructure through a webGIS within history, archaeology, place-names, statistics and geography: a digital cartographical skeleton for thematic mapping and analysis which will generate new interdisciplinary research...

  3. Digging One's Own Grave

    Directory of Open Access Journals (Sweden)

    Arvo Krikmann

    2007-01-01

    Full Text Available The paper aims to demonstrate that some points in the explicationof the figurative expression digging one’s own grave via the concept of blending given by Gilles Fauconnier and Mark Turner are problematic: (1 Not understanding the consequences of one’s deeds is an almost universal presuppositionof and impulse or motivation for actualizing any utterance with a forewarning or gloating content (e.g., proverbs, not the singularity characterizing just the expression of grave-digging as such. (2 The inversion of causal and temporal structure is not the case because of metonymic association between the concepts of the grave and death, as a result of which specific causal and temporal order loses any significance. Many synonymous examples can be given in which the image refers to events before the death, between the death and funeral, as well as those after burial. (3 The source domain needs not to be restricted to natural death and modern civilized funerals but should include also the cases of violent deaths, e.g., the scenario of execution and the scenario of hunting and trapping. Preliminarily, a very brief synopsis of the main phases of development of cognitive linguistic theory of metaphor and some favourite examples of blends, used also in previous works, is provided.

  4. Microchemical and Structural Evidence for Space Weathering in Soils from Asteroid Itokawa

    Science.gov (United States)

    Thompson, M. S.; Christoffersen, R.; Zega, T. J.

    2013-01-01

    The chemistry, microstructure and optical properties of grains on the surfaces of airless bodies are continu-ously modified due to their interactions predominantly with solar energetic ions and micrometeorite impacts. Collectively known as space weathering, this phenomenon results in a discrepancy between remotely sensed spectra from asteroids and those ac-quired directly from meteorites. The return of pristine samples from the asteroid Itokawa provides insight into surface processes on airless bodies and will help in correlating remote sensing data with laboratory analysis of meteorites. Samples and Methods: We examined Itokawa samples RA-QD02-0042-01 and RA-QD-02-0042-02, ultramicrotomed sec-tions of a singular grain prepared by the Hayabusa sample cura-tion team. We analyzed these slices using a 200 keV JEOL 2010F transmission electron microscope (TEM) at Arizona State Uni-versity and a 200 keV JEOL 2500SE TEM at NASA JSC. Both field emission TEMs are equipped with energy-dispersive X-ray spectrometers (EDS) and scanning TEM (STEM) detectors. Results and Discussion: TEM observations reveal that the sectioned grain predominantly consists of a single crystal of low-Ca orthopyroxene, with subsidiary smaller regions of olivine, Fe-Ni sulfide, and Fe-Ni metal. EDS-spectrum imaging and high-resolution TEM (HRTEM) show local, nanocrystalline regions of the outermost 2 to 5 nm of the pyroxene are composed of an Fe-Mg-S-rich and Si- and O-depleted layer that is underlain by a 2- to 5-nm thick amorphous zone enriched in Si. These layers occur in multiple microtome slices and have uniform thicknesses. We also observe localized 'islands' of material on the surface of the pyroxene which HRTEM imaging indicates are amorphous and EDS measurements show are compositionally heterogeneous. A 10- to 60-nm thick partially amorphous zone occurs below the compositionally distinct rim. While this this zone is associated with the compositionally heterogeneous outer layer, it also occurs

  5. Asteroid Photometry

    CERN Document Server

    Li, Jian-Yang; Buratti, Bonnie J; Takir, Driss; Clark, Beth Ellen

    2015-01-01

    Asteroid photometry has three major applications: providing clues about asteroid surface physical properties and compositions, facilitating photometric corrections, and helping design and plan ground-based and spacecraft observations. The most significant advances in asteroid photometry in the past decade were driven by spacecraft observations that collected spatially resolved imaging and spectroscopy data. In the mean time, laboratory measurements and theoretical developments are revealing controversies regarding the physical interpretations of models and model parameter values. We will review the new developments in asteroid photometry that have occurred over the past decade in the three complementary areas of observations, laboratory work, and theory. Finally we will summarize and discuss the implications of recent findings.

  6. It is not all pheromones: No evidence that pheromones affect digging face choice during ant nest excavation.

    Science.gov (United States)

    Bruce, Andrew I

    2016-01-01

    Ants create nests of a size that is tailored to the number of individuals in a nest via a self-organized process. It is not yet clear how they accomplish this. Deposition and evaporation of pheromones at the digging face has been hypothesised by Deneubourg and Franks (1995) and Buhl et al. (2005) to be part of the nest construction process, with models being presented to support this contention. This hypothesis was tested by allowing groups of 5 Acromyrmex lundi workers to choose between two excavation sites, one that was freshly exposed to digging and one where digging had ceased an hour previously. It was expected that if pheromones played a role in stimulating digging, then ants would show a preference for digging in the "fresh" sites rather than the "aged" sites where the putative digging pheromone had decayed. No significant difference in digging activity between "fresh" and "aged" sites was detected. It is therefore likely that, while digging pheromones may play other roles in other parts of the digging system, they do not play an important role in regulation of soil excavation at the digging face.

  7. Asteroid taxonomy

    Science.gov (United States)

    Tholen, David J.; Barucci, M. Antonietta

    1989-01-01

    The spectral reflectivity of asteroid surfaces over the wavelength range of 0.3 to 1.1 micron can be used to classify these objects into several broad groups with similar spectral characteristics. The three most recently developed taxonomies group the asteroids into 9, 11, or 14 different clases, depending on the technique used to perform the analysis. The distribution of the taxonomic classes shows that darker and redder objects become more dominant at larger heliocentric distances, while the rare asteroid types are found more frequently among the small objects of the planet-crossing population.

  8. Asteroids IV

    Science.gov (United States)

    Michel, Patrick; DeMeo, Francesca E.; Bottke, William F.

    Asteroids are fascinating worlds. Considered the building blocks of our planets, many of the authors of this book have devoted their scientific careers to exploring them with the tools of our trade: ground- and spacebased observations, in situ space missions, and studies that run the gamut from theoretical modeling efforts to laboratory work. Like fossils for paleontologists, or DNA for geneticists, they allow us to construct a veritable time machine and provide us with tantalizing glimpses of the earliest nature of our solar system. By investigating them, we can probe what our home system was like before life or even the planets existed. The origin and evolution of life on our planet is also intertwined with asteroids in a different way. It is believed that impacts on the primordial Earth may have delivered the basic components for life, with biology favoring attributes that could more easily survive the aftermath of such energetic events. In this fashion, asteroids may have banished many probable avenues for life to relative obscurity. Similarly, they may have also prevented our biosphere from becoming more complex until more recent eras. The full tale of asteroid impacts on the history of our world, and how human life managed to emerge from myriad possibilities, has yet to be fully told. The hazard posed by asteroid impacts to our civilization is low but singular. The design of efficient mitigation strategies strongly relies on asteroid detection by our ground- and spacebased surveys as well as knowledge of their physical properties. A more positive motivation for asteroid discovery is that the proximity of some asteroids to Earth may allow future astronauts to harvest their water and rare mineral resources for use in exploration. A key goal of asteroid science is therefore to learn how humans and robotic probes can interact with asteroids (and extract their materials) in an efficient way. We expect that these adventures may be commonplace in the future

  9. Digging for knowledge

    Science.gov (United States)

    Szu, Harold; Jenkins, Jeffrey; Hsu, Charles; Goehl, Steve; Miao, Liden; Cader, Masud; Benachenhou, Dalila

    2009-04-01

    The "smile of a mother" is always recognized, whenever and wherever. But why is my PC always dumb and unable to recognize me or my needs, whoever or whatever? This paper postulates that such a 6 W's query and search system needs matching storage. Such a lament will soon be mended with a smarter PC, or a smarter Google engine, a network computer, working in the field of data retrieval, feature extraction, reduction, and knowledge precipitation. Specifically, the strategy of modern information storage and retrieval shall work like our brains, which are constantly overwhelmed by 5 pairs of identical tapes taken by eyes, ears, etc. 5 high fidelity sensors generate 5 pairs of high definition tapes which produce the seeing and hearing etc. in our perception. This amounts to 10 tapes recorded in a non-abridged fashion. How can we store and retrieve them when we need to? We must reduce the redundancy, enhancing the signal noise ratio, and fusing invariant features using a simple set of mathematical operations to write according to the union and read by the intersection in the higher dimensional vector space. For example, (see paper for equation) where the query must be phrased in terms of the union of imprecise or partial set of 6w's denoted by the union of lower case w's. The upper case W's are the archival storage of a primer tree. A simplified humanistic representation may be called the 6W space (who, what, where, when, why, how), also referred to as the Newspaper geometry. It seems like mapping the 6W to the 3W (World Wide Web) is becoming relatively easier. It may thus become efficient and robust by rapidly digging for knowledge through the set operations of union, writing, and intersection, reading, upon the design of 6 W query searching engine matched efficiently by the 6W vector index databases. In fact, Newspaper 6D geometry may be reduced furthermore by PCA (Principal Component Analysis) eigenvector mathematics and mapped into the 2D causality space comprised of

  10. Asteroid structure

    Science.gov (United States)

    Asphaug, E.

    2014-07-01

    Even before the first space missions to asteroids, in the mid-1990s, it was known that asteroids have weird structures. Photometry indicated complicated shapes, and the pioneering radar investigations by Ostro and colleagues followed by adaptive optics campaigns and flybys showed odd binary forms, and confirmed the common presence of satellites, and indications of highly varying surface roughness. Some asteroids turned out to be dominated by a single major cratering event, while others showed no evidence of a major crater, or perhaps for global crater erasure. The first space mission to orbit an asteroid, NEAR, found a mixture of heavily cratered terrains and geomorphically active 'ponds', and indicated evidence for global seismicity from impact. The next mission to orbit an asteroid, Hayabusa, found what most agree is a rubble pile, with no major craters and an absence of fines. There is to date no direct evidence of asteroid interior geology, other than measurements of bulk density, and inferences made for mass distribution asymmetry based on dynamics, and inferences based on surface lineaments. Interpolating from the surface to the interior is always risky and usually wrong, but of course the answer is important since we are someday destined to require this knowledge in order to divert a hazardous asteroid from impact with the Earth. Even considering the near-subsurface, here we remain as ignorant as we were about the Moon in the early 1960s, whether the surface will swallow us up in dust, or will provide secure landing and anchoring points. Laboratory experimentation in close to zero-G is still in its early stages. Adventures such as mining and colonization will surely have to wait until we better know these things. How do we get from here to there? I will focus on 3 areas of progress: (1) asteroid cratering seismology, where we use the surface craters to understand what is going on inside; (2) numerical modeling of collisions, which predicts the internal

  11. Small asteroid system evolution

    OpenAIRE

    Jacobson, Seth A.

    2014-01-01

    Observations with radar, photometric and direct imaging techniques have discovered that multiple asteroid systems can be divided clearly into a handful of different morphologies, and recently, the discovery of small unbound asteroid systems called asteroid pairs have revolutionized the study of small asteroid systems. Simultaneously, new theoretical advances have demonstrated that solar radiation dictates the evolution of small asteroids with strong implications for asteroid internal structur...

  12. Search for Asteroid-Asteroid Encounters

    Directory of Open Access Journals (Sweden)

    Luis A. Mammana

    2001-01-01

    Full Text Available Earlier studies about asteroids did not consider mutual interactions since they assume a negligible asteroid mass. In 1966 Hertz took into account for the first time the gravitational effects produced by an asteroid on another for mass determination. This gravitational action becomes relevant for enough effective encounters. The most efficient gravitational interaction is that produced in a large time interval and for small distances. For each particular caseful it is relevant to perform a care analysis in order to determinate the feasibility in the mass determination and improved orbital elements. In the present paper we performed a search of asteroid-asteroid encounters occurred in the twenty century for the first 3000 numbered asteroids . Of all encounters we have selected only those asteroid pairs in which one of the asteroids has a diameter larger than 200 km and the other one (the smaller an observational interval of at least ten years.

  13. Dig-face monitoring during excavation of a radioactive plume at Mound Laboratory, Ohio

    Energy Technology Data Exchange (ETDEWEB)

    Josten, N.E.; Gehrke, R.J.; Carpenter, M.V.

    1995-12-01

    A dig-face monitoring system consists of onsite hardware for collecting information on changing chemical, radiological, and physical conditions in the subsurface soil during the hazardous site excavation. A prototype dig-face system was take to Mount Laboratory for a first trial. Mound Area 7 was the site of historical disposals of {sup 232}Th, {sup 227}Ac, and assorted debris. The system was used to monitor a deep excavation aimed at removing {sup 227}Ac-contaminated soils. Radiological, geophysical, and topographic sensors were used to scan across the excavation dig-face at four successive depths as soil was removed. A 3-D image of the contamination plumes was developed; the radiation sensor data indicated that only a small portion of the excavated soil volume was contaminated. The spatial information produced by the dig-face system was used to direct the excavation activities into the area containing the {sup 227}Ac and to evaluate options for handling the separate {sup 232}Th plume.

  14. Asteroid Mining and Prospecting

    OpenAIRE

    Esty, Thomas

    2013-01-01

    There has been a recent increase in interest in the idea of mining asteroids, as seen from the founding of multiple companies who seek to make this science fiction idea science fact. We analyzed a number of prior papers on asteroids to make an estimate as to whether mining asteroids is within the realm of possibility. Existing information on asteroid number, composition, and orbit from past research was synthesized with a new analysis using binomial statistics of the number of probes that wou...

  15. Digging Deeper: Looking Beyond Behavior to Discover Meaning

    Medline Plus

    Full Text Available ... Digging Deeper: Looking Beyond Behavior to Discover Meaning A Unit of Four Online Lessons Digging Deeper: Looking Beyond Behavior to Discover Meaning is a unit of four lessons that explore and apply ...

  16. Effect of Ni on aspartataminotransferase activity in Glechoma hederacea leaves subject to digging function by mammals

    Directory of Open Access Journals (Sweden)

    O. Y. Pakhomov

    2013-10-01

    Full Text Available Using simple and highly sensitive methods of biochemical analysis (determination of total enzyme activity of the class transferase and content of water-soluble protein fraction in Glechoma hederacea L. leaves, as response mechanisms of organisms to environmental change we have detected an environment forming role played by Talpa europaea L. (european mole, through its digging function, studied against the background of anthropogenic Ni pollution with concentrations of 0.2, 1.0 and 2.0 g/m2, which was equivalent to the presence of Ni at 1, 5, 10 times the dose of maximum permissible concentration (MPC. Thus, we discovered the fact of the reduction in total activity of aspartat­aminotransferase (AST in G. hederacea leaves by 12–65% and concentrations of water-soluble protein fraction by 30–60% relative to control (the area without pollution of Ni and digging activity of mammals. The combined effect of the digging activity of T. europaea and Ni at doses of 5, 10 MAC contributed to the increased activity of the enzyme from 2.3 to 3.0 times (compared with the control in the corresponding concentration Ni. The concentration of water soluble protein fraction under the combined effect of the digging activity and Ni at maximum concentration in G. hederacea leaves was reduced by 2 times (compared with the control in the corresponding concentration Ni, because it was difficult for the system to operate the mechanisms of recovery and normalization function, while at low and medium metal concentration the processes of protein metabolism increased by 11–150%. Вesides, the іnfluence of the digging activity of mammals (Apodemus sylvaticus L., A. flavicollis Melchior, Clethrionomys glareoles Schreber as our examples under the condition of artificial Ni soil pollution of the Ni polluted soil in the natural humid forest was assessed. Pollutants drastically influence the proteolityc activity of the soil that reflects microorganism’s metabolism. The

  17. Accelerator projects digs itself into a hole

    CERN Multimedia

    Levitin, C

    1998-01-01

    The director of the Russian Academy of Sciences' Institute of High Energy Physics is under attack from colleagues for refusing to salvage an 18 million dollar boring machine being used to dig a tunnel for a new particle accelerator (1/2 page).

  18. Asteroid exploration and utilization

    Science.gov (United States)

    Radovich, Brian M.; Carlson, Alan E.; Date, Medha D.; Duarte, Manny G.; Erian, Neil F.; Gafka, George K.; Kappler, Peter H.; Patano, Scott J.; Perez, Martin; Ponce, Edgar

    1992-01-01

    The Earth is nearing depletion of its natural resources at a time when human beings are rapidly expanding the frontiers of space. The resources possessed by asteroids have enormous potential for aiding and enhancing human space exploration as well as life on Earth. Project STONER (Systematic Transfer of Near Earth Resources) is based on mining an asteroid and transporting raw materials back to Earth. The asteroid explorer/sample return mission is designed in the context of both scenarios and is the first phase of a long range plan for humans to utilize asteroid resources. Project STONER is divided into two parts: asteroid selection and explorer spacecraft design. The spacecraft design team is responsible for the selection and integration of the subsystems: GNC, communications, automation, propulsion, power, structures, thermal systems, scientific instruments, and mechanisms used on the surface to retrieve and store asteroid regolith. The sample return mission scenario consists of eight primary phases that are critical to the mission.

  19. 水力冲挖技术在海相软土场地中的应用∗%Application Study on the Technology of Hydraulic Dig in Marine Soft Soil Site

    Institute of Scientific and Technical Information of China (English)

    朱进军; 邵勇; 马庆华

    2016-01-01

    The marine clay has the characteristics of high compression, high void ratio, low strength and high thixotropic, mechanical excavation often lead to engineering accidents of pile foundation tilting or landslide. To solve these problems, the authors take the hydraulic punch dig technology into the excavation and construction pit. Combined with the specific engineering practice, the process principle of the technology, construction points, security controls were described.%海相软土具有高压缩性、大孔隙比、低强度和高触变性等特点,机械开挖施工极易造成桩基倾斜或边坡滑动等工程事故。针对这些问题,将水力冲挖技术引入基坑开挖施工,结合具体工程实践,介绍该技术的工艺原理、施工要点、安全控制措施。

  20. Quantitative measures for assessment of the hydraulic excavator digging efficiency

    Institute of Scientific and Technical Information of China (English)

    Dragoslav JANOSEVIC; Rosen MITREV; Boban ANDJELKOVIC; Plamen PETROV

    2012-01-01

    In this paper,quantitative measures for the assessment of the hydraulic excavator digging efficiency are proposed and developed.The following factors are considered: (a) boundary digging forces allowed for by the stability of an excavator,(b) boundary digging forces enabled by the driving mechanisms of the excavator,(c) factors taking into consideration the digging position in the working range of an excavator,and (d) sign and direction of potential digging resistive force.A corrected digging force is defined and a mathematical model of kinematic chain and drive mechanisms of a five-member excavator configuration was developed comprising: an undercarriage,a rotational platform and an attachment with boom,stick,and bucket.On the basis of the mathematical model of the excavator,software was developed for computation and detailed analysis of the digging forces in the entire workspace of the excavator.By using the developed software,the analysis of boundary digging forces is conducted and the corrected digging force is determined for two models of hydraulic excavators of the same mass (around 17000 kg) with identical kinematic chain parameters but with different parameters of manipulator driving mechanisms.The results of the analysis show that the proposed set of quantitative measures can be used for assessment of the digging efficiency of existing excavator models and to serve as an optimization criterion in the synthesis of manipulator driving mechanisms of new excavator models.

  1. The characteristics and construction technology of rotary digging bored piles%旋挖钻孔灌注桩特性及施工工艺

    Institute of Scientific and Technical Information of China (English)

    王成全

    2015-01-01

    论述了旋挖钻孔灌注桩的技术特性,从土层性质、运行成本、工程量等方面,分析了旋挖桩在工程应用中的局限性,并以湿作业旋挖成孔为例,介绍了旋挖钻孔灌注桩的施工工艺,为类似工程施工积累了经验。%This paper discussed the technology characteristics of rotary digging bored piles,from the soil properties,operation cost,volume and other aspects,analyzed the limitations of rotary digging pile in engineering application,and taking the wet homework rotary digging pore forming for example,introduced the construction technology of rotary digging bored piles,accumulated experience for similar engineering construction.

  2. Applied Astronomy: Asteroid Prospecting

    Science.gov (United States)

    Elvis, M.

    2013-09-01

    In the age of asteroid mining the ability to find promising ore-bearing bodies will be valuable. This will give rise to a new discipline- "Applied Astronomy". Just as most geologists work in industry, not in academia, the same will be true of astronomers. Just how rare or common ore-rich asteroids are likely to be, and the skills needed to assay their value, are discussed here, with an emphasis on remote - telescopic - methods. Also considered are the resources needed to conduct extensive surveys of asteroids for prospecting purposes, and the cost and timescale involved. The longer-term need for applied astronomers is also covered.

  3. Near-Sun asteroids

    Science.gov (United States)

    Emel'yanenko, V. V.

    2017-01-01

    As follows from dynamical studies, in the course of evolution, most near-Earth objects reach orbits with small perihelion distances. Changes of the asteroids in the vicinity of the Sun should play a key role in forming the physical properties, size distribution, and dynamical features of the near-Earth objects. Only seven of the discovered asteroids are currently moving along orbits with perihelion distances q orbits farther from the Sun. In this study, we found asteroids that have been recently orbiting with perihelion distances q orbits for hundreds to tens of thousands of years. To carry out astrophysical observations of such objects is a high priority.

  4. Space weathering of asteroids

    CERN Document Server

    Shestopalov, D I; Cloutis, E A

    2012-01-01

    Analysis of laboratory experiments simulating space weathering optical effects on atmosphereless planetary bodies reveals that the time needed to alter the spectrum of an ordinary chondrite meteorite to resemble the overall spectral shape and slope of an S-type asteroid is about ~ 0.1 Myr. The time required to reduce the visible albedo of samples to ~ 0.05 is ~ 1 Myr. Since both these timescales are much less than the average collisional lifetime of asteroids larger than several kilometers in size, numerous low-albedo asteroids having reddish spectra with subdued absorption bands should be observed instead of an S-type dominated population. It is not the case because asteroid surfaces cannot be considered as undisturbed, unlike laboratory samples. We have estimated the number of collisions occurring in the time of 105 yr between asteroids and projectiles of various sizes and show that impact-activated motions of regolith particles counteract the progress of optical maturation of asteroid surfaces. Continual r...

  5. Rising Above the Storm: DIG TEXAS

    Science.gov (United States)

    Ellins, K. K.; Miller, K. C.; Bednarz, S. W.; Mosher, S.

    2011-12-01

    For a decade Texas educators, scientists and citizens have shown a commitment to earth science education through planning at the national and state levels, involvement in earth science curriculum and teacher professional development projects, and the creation of a model senior level capstone Earth and Space Science course first offered in 2010 - 2011. The Texas state standards for Earth and Space Science demonstrate a shift to rigorous content, career relevant skills and use of 21st century technology. Earth and Space Science standards also align with the Earth Science, Climate and Ocean Literacy framework documents. In spite of a decade of progress K-12 earth science education in Texas is in crisis. Many school districts do not offer Earth and Space Science, or are using the course as a contingency for students who fail core science subjects. The State Board for Educator Certification eliminated Texas' secondary earth science teacher certification in 2009, following the adoption of the new Earth and Space Science standards. This makes teachers with a composite teacher certification (biology, physics and chemistry) eligible to teach Earth and Space Science, as well other earth science courses (e.g., Aquatic Science, Environmental Systems/Science) even if they lack earth science content knowledge. Teaching materials recently adopted by the State Board of Education do not include Earth and Space Science resources. In July 2011 following significant budget cuts at the 20 Education Service Centers across Texas, the Texas Education Agency eliminated key staff positions in its curriculum division, including science. This "perfect storm" has created a unique opportunity for a university-based approach to confront the crisis in earth science education in Texas which the Diversity and Innovation in the Geosciences (DIG) TEXAS alliance aims to fulfill. Led by the Texas A&M University College of Geosciences and The University of Texas Jackson School of Geosciences, with

  6. Asteroids - NeoWs API

    Data.gov (United States)

    National Aeronautics and Space Administration — NeoWs (Near Earth Object Web Service) is a RESTful web service for near earth Asteroid information. With NeoWs a user can: search for Asteroids based on their...

  7. The Asteroid Impact Mission

    Science.gov (United States)

    Carnelli, Ian; Galvez, Andres; Mellab, Karim

    2016-04-01

    The Asteroid Impact Mission (AIM) is a small and innovative mission of opportunity, currently under study at ESA, intending to demonstrate new technologies for future deep-space missions while addressing planetary defense objectives and performing for the first time detailed investigations of a binary asteroid system. It leverages on a unique opportunity provided by asteroid 65803 Didymos, set for an Earth close-encounter in October 2022, to achieve a fast mission return in only two years after launch in October/November 2020. AIM is also ESA's contribution to an international cooperation between ESA and NASA called Asteroid Impact Deflection Assessment (AIDA), consisting of two mission elements: the NASA Double Asteroid Redirection Test (DART) mission and the AIM rendezvous spacecraft. The primary goals of AIDA are to test our ability to perform a spacecraft impact on a near-Earth asteroid and to measure and characterize the deflection caused by the impact. The two mission components of AIDA, DART and AIM, are each independently valuable but when combined they provide a greatly increased scientific return. The DART hypervelocity impact on the secondary asteroid will alter the binary orbit period, which will also be measured by means of lightcurves observations from Earth-based telescopes. AIM instead will perform before and after detailed characterization shedding light on the dependence of the momentum transfer on the asteroid's bulk density, porosity, surface and internal properties. AIM will gather data describing the fragmentation and restructuring processes as well as the ejection of material, and relate them to parameters that can only be available from ground-based observations. Collisional events are of great importance in the formation and evolution of planetary systems, own Solar System and planetary rings. The AIDA scenario will provide a unique opportunity to observe a collision event directly in space, and simultaneously from ground-based optical and

  8. 2015 Barcelona Asteroid Day

    CERN Document Server

    Gritsevich, Maria; Palme, Herbert

    2017-01-01

    This volume is a compilation of the research presented at the International Asteroid Day workshop which was celebrated at Barcelona on June 30th, 2015. The proceedings discuss the beginning of a new era in the study and exploration of the solar system’s minor bodies. International Asteroid Day commemorates the Tunguska event of June 30th, 1908. The workshop’s goal was to promote the importance of dealing proactively with impact hazards from space. Multidisciplinary experts contributed to this discussion by describing the nature of comets and asteroids along with their offspring, meteoroids. New missions to return material samples of asteroids back to Earth such as Osiris-REx and Hayabusa 2, as well as projects like AIM and DART which will test impact deflection techniques for Potentially Hazardous Asteroids encounters were also covered. The proceedings include both an outreach level to popularize impact hazards and a scientific character which covers the latest knowledge on these topics, as well as offeri...

  9. Geography of the asteroid belt

    Science.gov (United States)

    Zellner, B. H.

    1978-01-01

    The CSM classification serves as the starting point on the geography of the asteroid belt. Raw data on asteroid types are corrected for observational biases (against dark objects, for instance) to derive the distribution of types throughout the belt. Recent work on family members indicates that dynamical families have a true physical relationship, presumably indicating common origin in the breakup of a parent asteroid.

  10. The Active Asteroids

    CERN Document Server

    Jewitt, Dave

    2011-01-01

    Some asteroids eject dust, unexpectedly producing transient, comet-like comae and tails. First ascribed to the sublimation of near-surface water ice, mass losing asteroids (also called "main-belt comets") can in fact be driven by a surprising diversity of mechanisms. In this paper, we consider eleven dynamical asteroids losing mass, in nine of which the ejected material is spatially resolved. We address mechanisms for producing mass loss including rotational instability, impact ejection, electrostatic repulsion, radiation pressure sweeping, dehydration stresses and thermal fracture, in addition to the sublimation of ice. In two objects (133P and 238P) the repetitive nature of the observed activity leaves ice sublimation as the only reasonable explanation while, in a third ((596) Scheila), a recent impact is the cause. Another impact may account for activity in P/2010 A2 but this tiny object can also be explained as having shed mass after reaching rotational instability. Mass loss from (3200) Phaethon is proba...

  11. Manuel's asteroid disruption technique.

    Science.gov (United States)

    John, Manuel; Ipe, Abraham; Jacob, Ivan

    2015-06-01

    A seventy-year-old male presented with dense asteroid hyalosis in both eyes. He had undergone cataract extraction in one eye 3 years ago, and the other eye had immature cataract. Both the autorefractor and dilated streak retinoscopy did not give readings and subjective visual improvement could not be achieved. Immediately following YAG posterior capsulotomy and anterior vitreous asteroid disruption, the vision improved to 20/20 with recordable auto refractor and streak retinoscopy values. Our initial experience indicates that the treatment is simple, safe and effective but needs controlled and prospective studies to confirm its long-term safety.

  12. Asteroid Control and Resource Utilization

    Science.gov (United States)

    Paterson, G.; Radice, G.; Sanchez, J.-P.

    Asteroids are materials rich small solar system bodies which are prime candidates for rendezvous and mining. Up until now much attention has been focused on methods of destroying or deflecting potentially hazardous asteroids from colliding with the Earth. Recently however the concept of asteroid capture has been suggested whereby the asteroid is returned to an orbit close to the Earth before mining can begin. This paper aims to provide a comprehensive introduction to the field for new researchers and to put forward a number of novel strategies for asteroid control.

  13. Asteroid science by Gaia

    Science.gov (United States)

    Muinonen, Karri; Cellino, Alberto; Dell Oro, Aldo; Tanga, Paolo; Delbo, Marco; Mignard, Francois; Thuillot, William; Berthier, Jerome; Carry, Benoit; Hestroffer, Daniel; Granvik, Mikael; Fedorets, Grigori

    2016-07-01

    Since the start of its regular observing program in summer 2014, the Gaia mission has carried out systematic photometric, spectrometric, and astrometric observations of asteroids. In total, the unique capabilities of Gaia allow for the collection of an extensive and homogeneous data set of some 350,000 asteroids down to the limiting magnitude of G = 20.7 mag. The Gaia performance remains excellent over the entire available brightness range. Starting from 2003, a working group of European asteroid scientists has explored the main capabilities of the mission, defining the expected scientific impact on Solar System science. These results have served as a basis for developing the Gaia data reduction pipeline, within the framework of the Data Processing and Analysis Consortium (DPAC). We describe the distribution of the existing and forecoming Gaia observations in space and time for different categories of objects. We illustrate the peculiar properties of each single observation, as these properties will affect the subsequent exploitation of the mission data. We will review the expected performances of Gaia, basically as a function of magnitude and proper motion of the sources. We will further focus on the areas that will benefit from complementary observational campaigns to improve the scientific return of the mission, and on the involvement of the planetary science community as a whole in the exploitation of the Gaia survey. We will thus describe the current and future opportunities for ground-based observers and forthcoming changes brought by Gaia in some observational approaches, such as stellar occultations by transneptunian objects and asteroids. We will show first results from the daily, short-term processing of Gaia data, all the way from the onboard data acquisition to the ground-based processing. We illustrate the tools developed to compute predictions of asteroid observations, we discuss the procedures implemented by the daily processing, and we illustrate

  14. Threat Mitigation: The Asteroid Tugboat

    CERN Document Server

    Schweickart, R; Durda, D; Hut, P; Chapman, Clark; Durda, Dan; Hut, Piet; Schweickart, Russell

    2006-01-01

    The Asteroid Tugboat (AT) is a fully controlled asteroid deflection concept using a robotic spacecraft powered by a high efficiency, electric propulsion system (ion or plasma) which docks with and attaches to the asteroid, conducts preliminary operations, and then thrusts continuously parallel to the asteroid velocity vector until the desired velocity change is achieved. Based on early warning, provided by ground tracking and orbit prediction, it would be deployed a decade or more prior to a potential impact. On completion of the initial rendezvous with the near-Earth object (NEO) the AT would first reduce the uncertainty in the orbit of the asteroid via Earth tracking of its radio transponder while it is station keeping with the asteroid. If on analysis of tracking data a deflection is required the AT would execute a reconnaissance phase collecting and processing information about the physical characteristics of the asteroid to support subsequent operations. The AT would then dock at the appropriate pole (i....

  15. Impact-Actuated Digging Tool for Lunar Excavation Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Honeybee Robotics proposes to develop a vacuum compatible, impact-actuated digging tool for the excavation of frozen and compacted regolith on the lunar surface and...

  16. Digging Deeper: Looking Beyond Behavior to Discover Meaning

    Medline Plus

    Full Text Available ... Behavior to Discover Meaning A Unit of Four Online Lessons Digging Deeper: Looking Beyond Behavior to Discover ... Behavior to Discover Meaning. A Unit of Four Online Lessons. HHS/ACF/OHS/EHSNRC. 2006. English. Last ...

  17. Asteroids, meteorites, and comets

    CERN Document Server

    Elkins-Tanton, Linda T

    2010-01-01

    Asteroids, Comets, and Meteorites provides students, researchers, and general readers with the most up-to-date information on this fascinating field. From the days of the dinosaurs to our modern environment, this book explores all aspects of these cosmic invaders.

  18. Asteroid Kinetic Impactor Missions

    Science.gov (United States)

    Chesley, Steven

    2015-08-01

    Asteroid impact missions can be carried out as a relatively low-cost add-ons to most asteroid rendezvous missions and such impact experiments have tremendous potential, both scientifically and in the arena of planetary defense.The science returns from an impactor demonstration begin with the documentation of the global effects of the impact, such as changes in orbit and rotation state, the creation and dissipation of an ejecta plume and debris disk, and morphological changes across the body due to the transmission of seismic waves, which might induce landslides and toppling of boulders, etc. At a local level, an inspection of the impact crater and ejecta blanket reveals critical material strength information, as well as spectral differences between the surface and subsurface material.From the planetary defense perspective, an impact demonstration will prove humankind’s capacity to alter the orbit of a potentially threatening asteroid. This technological leap comes in two parts. First, terminal guidance systems that can deliver an impactor with small errors relative to the ~100-200 meter size of a likely impactor have yet to be demonstrated in a deep space environment. Second, the response of an asteroid to such an impact is only understood theoretically due to the potentially significant dependence on the momentum carried by escaping ejecta, which would tend to enhance the deflection by tens of percent and perhaps as much as a factor of a few. A lack of validated understanding of momentum enhancement is a significant obstacle in properly sizing a real-world impactor deflection mission.This presentation will describe the drivers for asteroid impact demonstrations and cover the range of such concepts, starting with ESA’s pioneering Don Quijote mission concept and leading to a brief description of concepts under study at the present time, including the OSIRIS-REx/ISIS, BASiX/KIX and AIM/DART (AIDA) concepts.

  19. Capture of Asteroids and Transport of Asteroid Materials to Earth

    Science.gov (United States)

    Chiu, Hong-Yee; no Team

    2014-01-01

    Recently there has been much discussion on the capture of asteroids or mining the asteroids. While the technology might be years away, in this paper we will discuss an energy efficient method to transport either a small asteroid or materials gathered from asteroids to the Earth. In particular, I will concentrate on a large and nearby asteroid, 8 Flora in the Flora Family. Generally, asteroids are located between 2 to 3 AU (astronomical unit) from the Earth, and in transporting materials from asteroids to the Earth, an energy equivalent of the gravitational potential energy difference between the Earth and the asteroids to the Sun. This amount of potential energy is a sizable fraction of the orbital kinetic energy of the Earth around the Sun. This amount of energy is considerable. In this paper I propose to use the planet Mars as a medium to remove much of the gravitational energy difference. In the case of the asteroid 8 Flora, it is only necessary to decelerate the asteroid mate- rials by a small decrement, of the order of 3 km/sec. This decrement could even be achieved (pending on the availability of technology) by mechanical devices such as catapults on 8 Flora. It is also proposed to separate a pair of contact asteroid binaries by using impulse propulsion, and to propel one component of the separated asteroids to pass by Mars to be decelerated to reach the Earth orbit and captured by the Earth or the Moon. The plausibility of this ambitious project will be discussed. The author is NASA-GSFC Astrophysicist, Retired.

  20. EURONEAR - Data Mining of Asteroids and Near Earth Asteroids

    OpenAIRE

    Vaduvescu, O.; Curelaru, L.; Birlan, M.; Bocsa, G.; Serbanescu, L.; Tudorica, A.; Berthier, J.

    2009-01-01

    Besides new observations, mining old photographic plates and CCD image archives represents an opportunity to recover and secure newly discovered asteroids, also to improve the orbits of Near Earth Asteroids (NEAs), Potentially Hazardous Asteroids (PHAs) and Virtual Impactors (VIs). These are the main research aims of the EURONEAR network. As stated by the IAU, the vast collection of image archives stored worldwide is still insufficiently explored, and could be mined for known NEAs and other a...

  1. Dig Hazard Assessment Using a Stereo Pair of Cameras

    Science.gov (United States)

    Rankin, Arturo L.; Trebi-Ollennu, Ashitey

    2012-01-01

    This software evaluates the terrain within reach of a lander s robotic arm for dig hazards using a stereo pair of cameras that are part of the lander s sensor system. A relative level of risk is calculated for a set of dig sectors. There are two versions of this software; one is designed to run onboard a lander as part of the flight software, and the other runs on a PC under Linux as a ground tool that produces the same results generated on the lander, given stereo images acquired by the lander and downlinked to Earth. Onboard dig hazard assessment is accomplished by executing a workspace panorama command sequence. This sequence acquires a set of stereo pairs of images of the terrain the arm can reach, generates a set of candidate dig sectors, and assesses the dig hazard of each candidate dig sector. The 3D perimeter points of candidate dig sectors are generated using configurable parameters. A 3D reconstruction of the terrain in front of the lander is generated using a set of stereo images acquired from the mast cameras. The 3D reconstruction is used to evaluate the dig goodness of each candidate dig sector based on a set of eight metrics. The eight metrics are: 1. The maximum change in elevation in each sector, 2. The elevation standard deviation in each sector, 3. The forward tilt of each sector with respect to the payload frame, 4. The side tilt of each sector with respect to the payload frame, 5. The maximum size of missing data regions in each sector, 6. The percentage of a sector that has missing data, 7. The roughness of each sector, and 8. Monochrome intensity standard deviation of each sector. Each of the eight metrics forms a goodness image layer where the goodness value of each sector ranges from 0 to 1. Goodness values of 0 and 1 correspond to high and low risk, respectively. For each dig sector, the eight goodness values are merged by selecting the lowest one. Including the merged goodness image layer, there are nine goodness image layers for each

  2. Active Asteroids: Main-Belt Comets and Disrupted Asteroids

    CERN Document Server

    Hsieh, Henry H

    2015-01-01

    The study of active asteroids has attracted a great deal of interest in recent years since the recognition of main-belt comets (which orbit in the main asteroid belt, but exhibit comet-like activity due to the sublimation of volatile ices) as a new class of comets in 2006, and the discovery of the first disrupted asteroids (which, unlike MBCs, exhibit comet-like activity due to a physical disruption such as an impact or rotational destabilization, not sublimation) in 2010. In this paper, I will briefly discuss key areas of interest in the study of active asteroids.

  3. Multiple origins of asteroid pairs

    CERN Document Server

    Jacobson, Seth A

    2015-01-01

    Rotationally fissioned asteroids produce unbound daughter asteroids that have very similar heliocentric orbits. Backward integration of their current heliocentric orbits provides an age of closest proximity that can be used to date the rotational fission event. Most asteroid pairs follow a predicted theoretical relationship between the primary spin period and the mass ratio of the two pair members that is a direct consequence of the YORP-induced rotational fission hypothesis. If the progenitor asteroid has strength, asteroid pairs may have high mass ratios with possibly fast rotating primaries. However, secondary fission leaves the originally predicted trend unaltered. We also describe the characteristics of pair members produced by four alternative routes from a rotational fission event to an asteroid pair. Unlike direct formation from the event itself, the age of closest proximity of these pairs cannot generally be used to date the rotational fission event since considerable time may have passed.

  4. A new mechanism for the formation of regolith on asteroids

    Science.gov (United States)

    Delbo, Marco; Libourel, Guy; Wilkerson, Justin; Murdoch, Naomi; Michel, Patrick; Ramesh, Kt; Ganino, Clement; Verati, Chrystele; Marchi, Simone

    2014-11-01

    The soil of asteroids, like that of the Moon, and other rocky, airless bodies in the Solar System, is made of a layer of pebbles, sand, and dust called regolith.Previous works suggested that the regolith on asteroids is made from material ejected from impacts and re-accumulated on the surface and from surface rocks that are broken down by micrometeoroid impacts. However, this regolith formation process has problems to explain the regolith on km-sized and smaller asteroids: it is known that impact fragments can reach escape velocities and breaks free from the gravitational forces of these small asteroids, indicating the impact mechanism is not the dominant process for regolith creation. Other studies also reveal that there is too much regolith on small asteroids’ surfaces to have been deposited there solely by impacts over the millions of years of asteroids’ evolution.We proposed that another process is capable of gently breaking rocks at the surface of asteroids: thermal fatigue by temperature cycling. As asteroids spin about their rotation axes, their surfaces go in and out of shadow resulting in large surface temperature variations. The rapid heating and cooling creates thermal expansion and contraction in the asteroid material, initiating cracking and propagating existing cracks. As the process is repeated over and over, the crack damage increases with time, leading eventually to rock fragmentation (and production of new regolith).To study this process, in the laboratory, we subjected meteorites, used as asteroid material analogs, to 37 days of thermal cycles similar to those occurring on asteroids. We measured cracks widening at an average rate of 0.5 mm/y. Some fragments were also produced, indicating meteorite fragmentation. To scale our results to asteroid lifetime, we incorporated our measurements into a fracture model and we deduced that thermal cycling is more efficient than micrometeorite bombardment at fragmenting rock over millions of years on

  5. Asteroid family ages

    CERN Document Server

    Spoto, Federica; Knezevic, Zoran

    2015-01-01

    A new family classification, based on a catalog of proper elements with $\\sim 384,000$ numbered asteroids and on new methods is available. For the $45$ dynamical families with $>250$ members identified in this classification, we present an attempt to obtain statistically significant ages: we succeeded in computing ages for $37$ collisional families. We used a rigorous method, including a least squares fit of the two sides of a V-shape plot in the proper semimajor axis, inverse diameter plane to determine the corresponding slopes, an advanced error model for the uncertainties of asteroid diameters, an iterative outlier rejection scheme and quality control. The best available Yarkovsky measurement was used to estimate a calibration of the Yarkovsky effect for each family. The results are presented separately for the families originated in fragmentation or cratering events, for the young, compact families and for the truncated, one-sided families. For all the computed ages the corresponding uncertainties are pro...

  6. Asteroid Impact Monitoring

    Science.gov (United States)

    Milani, A.

    2006-06-01

    Some asteroids and comets with Earth-crossing orbit may impact our planet, thus we need to be able to identify the cases which could have a dangerous close approach within a century. This must be done as soon as such an asteroid is discovered, allowing for follow up observations which might contradict the impact possibility, and in the worst case to organize mitigation, possibly including deflection. The mathematical problem of predicting possible impacts, even with very low probabilities, has been solved by our group in the last few years. This paper presents the basic theory of these impact prediction, and discusses how they are practically used in the impact monitoring systems now operational, in particular the CLOMON2 robot of the Universities of Pisa and Valladolid.

  7. Asteroid impact monitoring

    Directory of Open Access Journals (Sweden)

    Milani A.

    2006-01-01

    Full Text Available Some asteroids and comets with Earth-crossing orbit may impact our planet, thus we need to be able to identify the cases which could have a dangerous close approach within a century. This must be done as soon as such an asteroid is discovered, allowing for follow up observations which might contradict the impact possibility, and in the worst case to organize mitigation, possibly including deflection. The mathematical problem of predicting possible impacts, even with very low probabilities, has been solved by our group in the last few years. This paper presents the basic theory of these impact prediction, and discusses how they are practically used in the impact monitoring systems now operational, in particular the CLOMON2 robot of the Universities of Pisa and Valladolid.

  8. Asteroid Surface Geophysics

    CERN Document Server

    Murdoch, Naomi; Schwartz, Stephen R; Miyamoto, Hideaki

    2015-01-01

    The regolith-covered surfaces of asteroids preserve records of geophysical processes that have occurred both at their surfaces and sometimes also in their interiors. As a result of the unique micro-gravity environment that these bodies posses, a complex and varied geophysics has given birth to fascinating features that we are just now beginning to understand. The processes that formed such features were first hypothesised through detailed spacecraft observations and have been further studied using theoretical, numerical and experimental methods that often combine several scientific disciplines. These multiple approaches are now merging towards a further understanding of the geophysical states of the surfaces of asteroids. In this chapter we provide a concise summary of what the scientific community has learned so far about the surfaces of these small planetary bodies and the processes that have shaped them. We also discuss the state of the art in terms of experimental techniques and numerical simulations that...

  9. Silicates in Alien Asteroids

    Science.gov (United States)

    2009-01-01

    This plot of data from NASA's Spitzer Space Telescopes shows that asteroid dust around a dead 'white dwarf' star contains silicates a common mineral on Earth. The data were taken primarily by Spitzer's infrared spectrograph, an instrument that breaks light apart into its basic constituents. The yellow dots show averaged data from the spectrograph, while the orange triangles show older data from Spitzer's infrared array camera. The white dwarf is called GD 40.

  10. The Rafita asteroid family

    Science.gov (United States)

    Aljbaae, S.; Carruba, V.; Masiero, J. R.; Domingos, R. C.; Huaman, M.

    2017-01-01

    The Rafita asteroid family is an S-type group located in the middle main belt, on the right side of the 3J:-1A mean-motion resonance. The proximity of this resonance to the family left side in semi-major axis caused many former family members to be lost. As a consequence, the family shape in the (a, 1/D) domain is quite asymmetrical, with a preponderance of objects on the right side of the distribution. The Rafita family is also characterized by a leptokurtic distribution in inclination, which allows the use of methods of family age estimation recently introduced for other leptokurtic families such as Astrid, Hansa, Gallia, and Barcelona. In this work we propose a new method based on the behavior of an asymmetry coefficient function of the distribution in the (a, 1/D) plane to date incomplete asteroid families such as Rafita. By monitoring the time behavior of this coefficient for asteroids simulating the initial conditions at the time of the family formation, we were able to estimate that the Rafita family should have an age of 490 ± 200 Myr, in good agreement with results from independent methods such as Monte Carlo simulations of Yarkovsky and Yorp dynamical induced evolution and the time behaviour of the kurtosis of the sin (i) distribution. Asteroids from the Rafita family can reach orbits similar to 8% of the currently known near Earth objects. ≃1% of the simulated objects are present in NEO-space during the final 10 Myr of the simulation, and thus would be comparable to objects in the present-day NEO population.

  11. Comet or Asteroid?

    Science.gov (United States)

    1997-11-01

    When is a minor object in the solar system a comet? And when is it an asteroid? Until recently, there was little doubt. Any object that was found to display a tail or appeared diffuse was a comet of ice and dust grains, and any that didn't, was an asteroid of solid rock. Moreover, comets normally move in rather elongated orbits, while most asteroids follow near-circular orbits close to the main plane of the solar system in which the major planets move. However, astronomers have recently discovered some `intermediate' objects which seem to possess properties that are typical for both categories. For instance, a strange object (P/1996 N2 - Elst-Pizarro) was found last year at ESO ( ESO Press Photo 36/96 ) which showed a cometary tail, while moving in a typical asteroidal orbit. At about the same time, American scientists found another (1996 PW) that moved in a very elongated comet-type orbit but was completely devoid of a tail. Now, a group of European scientists, by means of observations carried out at the ESO La Silla observatory, have found yet another object that at first appeared to be one more comet/asteroid example. However, continued and more detailed observations aimed at revealing its true nature have shown that it is most probably a comet . Consequently, it has received the provisional cometary designation P/1997 T3 . The Uppsala-DLR Trojan Survey Some time ago, Claes-Ingvar Lagerkvist (Astronomical Observatory, Uppsala, Sweden), in collaboration with Gerhard Hahn, Stefano Mottola, Magnus Lundström and Uri Carsenty (DLR, Institute of Planetary Exploration, Berlin, Germany), started to study the distribution of asteroids near Jupiter. They were particularly interested in those that move in orbits similar to that of Jupiter and which are located `ahead' of Jupiter in the so-called `Jovian L4 Lagrangian point'. Together with those `behind' Jupiter, these asteroids have been given the names of Greek and Trojan Heroes who participated in the famous Trojan war

  12. AIDA: Asteroid Impact & Deflection Assessment

    Science.gov (United States)

    Cheng, A. F.; Galvez, A.; Carnelli, I.; Michel, P.; Rivkin, A.; Reed, C.

    2012-12-01

    To protect the Earth from a hazardous asteroid impact, various mitigation methods have been proposed, including deflection of the asteroid by a spacecraft impact. AIDA, consisting of two mission elements, the Double Asteroid Redirection Test (DART) and the Asteroid Impact Monitoring (AIM) mission, is a demonstration of asteroid deflection. To date, there has been no such demonstration, and there is major uncertainty in the result of a spacecraft impact onto an asteroid, that is, the amount of deflection produced by a given momentum input from the impact. This uncertainty is in part due to unknown physical properties of the asteroid surface, such as porosity and strength, and in part due to poorly understood impact physics such that the momentum carried off by ejecta is highly uncertain. A first mission to demonstrate asteroid deflection would not only be a major step towards gaining the capability to mitigate an asteroid hazard, but in addition it would return unique information on an asteroid's strength, other surface properties, and internal structure. This information return would be highly relevant to future human exploration of asteroids. We report initial results of the AIDA joint mission concept study undertaken by the Johns Hopkins Applied Physics Laboratory and ESA with support from NASA centers including Goddard, Johnson and Jet Propulsion Laboratory. For AIDA, the DART spacecraft impactor study is coordinated with an ESA study of the AIM mission, which would rendezvous with the same asteroid to measure effects of the impact. Unlike the previous Don Quijote mission study performed by ESA in 2005-2007, DART envisions an impactor spacecraft to intercept the secondary member of a binary near-Earth asteroid. DART includes ground-based observations to measure the deflection independently of the rendezvous spacecraft observations from AIM, which also measures deflection and provides detailed characterization of the target asteroid. The joint mission AIDA

  13. File list: His.Dig.50.AllAg.Intestine,_Small [Chip-atlas[Archive

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  3. EURONEAR - Data Mining of Asteroids and Near Earth Asteroids

    CERN Document Server

    Vaduvescu, O; Birlan, M; Bocsa, G; Serbanescu, L; Tudorica, A; Berthier, J

    2009-01-01

    Besides new observations, mining old photographic plates and CCD image archives represents an opportunity to recover and secure newly discovered asteroids, also to improve the orbits of Near Earth Asteroids (NEAs), Potentially Hazardous Asteroids (PHAs) and Virtual Impactors (VIs). These are the main research aims of the EURONEAR network. As stated by the IAU, the vast collection of image archives stored worldwide is still insufficiently explored, and could be mined for known NEAs and other asteroids appearing occasionally in their fields. This data mining could be eased using a server to search and classify findings based on the asteroid class and the discovery date as "precoveries" or "recoveries". We built PRECOVERY, a public facility which uses the Virtual Observatory SkyBoT webservice of IMCCE to search for all known Solar System objects in a given observation. To datamine an entire archive, PRECOVERY requires the observing log in a standard format and outputs a database listing the sorted encounters of ...

  4. New Paradigms For Asteroid Formation

    CERN Document Server

    Johansen, Anders; Cuzzi, Jeffrey N; Morbidelli, Alessandro; Gounelle, Matthieu

    2015-01-01

    Asteroids and meteorites provide key evidence on the formation of planetesimals in the Solar System. Asteroids are traditionally thought to form in a bottom-up process by coagulation within a population of initially km-scale planetesimals. However, new models challenge this idea by demonstrating that asteroids of sizes from 100 to 1000 km can form directly from the gravitational collapse of small particles which have organised themselves in dense filaments and clusters in the turbulent gas. Particles concentrate passively between eddies down to the smallest scales of the turbulent gas flow and inside large-scale pressure bumps and vortices. The streaming instability causes particles to take an active role in the concentration, by piling up in dense filaments whose friction on the gas reduces the radial drift compared to that of isolated particles. In this chapter we review new paradigms for asteroid formation and compare critically against the observed properties of asteroids as well as constraints from meteo...

  5. Radar Observations of Asteroids

    Science.gov (United States)

    Ostro, S. J.

    2003-05-01

    During the past 25 years, radar investigations have provided otherwise unavailable information about the physical and dynamical properties of more than 200 asteroids. Measurements of the distribution of echo power in time delay and Doppler frequency provide two-dimensional images with spatial resolution as fine as a decameter. Sequences of delay-Doppler images can be used to produce geologically detailed three-dimensional models, to define the rotation state precisely, to constrain the internal density distribution, and to estimate the trajectory of the object's center of mass. Radar wavelengths (4 to 13 cm) and the observer's control of transmitted and received polarizations make the observations sensitive to near-surface bulk density and macroscopic structure. Since delay-Doppler positional measurements are orthogonal to optical angle measurements and typically have much finer fractional precision, they are powerful for refining orbits and prediction ephemerides. Radar astrometry can add decades or centuries to the interval over which an asteroid's close Earth approaches can accurately be predicted and can significantly refine collision probability estimates based on optical astrometry alone. In the highly unlikely case that a small body is on course for an Earth collision in this century, radar reconnaissance would almost immediately distinguish between an impact trajectory and a near miss and would dramatically reduce the difficulty and cost of any effort to prevent the collision. The sizes and rotation periods of radar-detected asteroids span more than four orders of magnitude. These observations have revealed both stony and metallic objects, elongated and nonconvex shapes as well as nearly featureless spheroids, small-scale morphology ranging from smoother than the lunar regolith to rougher than the rockiest terrain on Mars, craters and diverse linear structures, non-principal-axis spin states, contact binaries, and binary systems.

  6. Radar Investigations of Asteroids

    Science.gov (United States)

    Ostro, S.

    2004-05-01

    Radar investigations have provided otherwise unavailable information about the physical and dynamical properties of about 230 asteroids. Measurements of the distribution of echo power in time delay (range) and Doppler frequency (line-of-sight velocity) provide two-dimensional images with spatial resolution as fine as a decameter. Sequences of delay-Doppler images can be used to produce geologically detailed three-dimensional models, to define the rotation state precisely, to constrain the internal density distribution, and to estimate the trajectory of the object's center of mass. Radar wavelengths (4 to 13 cm) and the observer's control of transmitted and received polarizations make the observations sensitive to near-surface bulk density and macroscopic structure. Since delay-Doppler measurements are orthogonal to optical angle measurements and typically have much finer fractional precision, they are powerful for refining orbits and prediction ephemerides. Such astrometric measurements can add decades or centuries to the interval over which an asteroid's close Earth approaches can accurately be predicted and can significantly refine collision probability estimates based on optical astrometry alone. In the highly unlikely case that a small body is on course for an Earth collision in this century, radar reconnaissance would almost immediately distinguish between an impact trajectory and a near miss and would dramatically reduce the difficulty and cost of any effort to prevent the collision. The sizes and rotation periods of radar-detected asteroids span more than four orders of magnitude. The observations have revealed both stony and metallic objects, elongated and nonconvex shapes as well as nearly featureless spheroids, small-scale morphology ranging from smoother than the lunar regolith to rougher than the rockiest terrain on Mars, craters and diverse linear structures, non-principal-axis spin states, contact binaries, and binary systems.

  7. Asteroids and Comets

    CERN Document Server

    Fernandez, Yanga R; Howell, Ellen S; Woodney, Laura M

    2015-01-01

    Asteroids and comets are remnants from the era of Solar System formation over 4.5 billion years ago, and therefore allow us to address two fundamental questions in astronomy: what was the nature of our protoplanetary disk, and how did the process of planetary accretion occur? The objects we see today have suffered many geophysically-relevant processes in the intervening eons that have altered their surfaces, interiors, and compositions. In this chapter we review our understanding of the origins and evolution of these bodies, discuss the wealth of science returned from spacecraft missions, and motivate important questions to be addressed in the future.

  8. Ion Beam Shepherd for Asteroid Deflection

    CERN Document Server

    Bombardelli, C

    2011-01-01

    We present a novel concept to impart a continuous thrust to an Earth threatening asteroid from a hovering spacecraft without need for physical attachment nor gravitational interaction with the asteroid. The concept involves an ion thruster placed at a distance of a few asteroid diameters directing a stream of quasi-neutral plasma against the asteroid surface resulting into a net transferred momentum. As the transmitted force is independent of the asteroid mass and size the method allows deflecting subkilometer asteroids with a spacecraft much lighter when compared to a gravity tractor spacecraft of equal deflection capability. The finding could make low-cost asteroid deflection missions possible in the coming years.

  9. Asteroids Were Born Big

    CERN Document Server

    Morbidelli, Alessandro; Nesvorny, David; Levison, Harold F

    2009-01-01

    How big were the first planetesimals? We attempt to answer this question by conducting coagulation simulations in which the planetesimals grow by mutual collisions and form larger bodies and planetary embryos. The size frequency distribution (SFD) of the initial planetesimals is considered a free parameter in these simulations, and we search for the one that produces at the end objects with a SFD that is consistent with asteroid belt constraints. We find that, if the initial planetesimals were small (e.g. km-sized), the final SFD fails to fulfill these constraints. In particular, reproducing the bump observed at diameter D~100km in the current SFD of the asteroids requires that the minimal size of the initial planetesimals was also ~100km. This supports the idea that planetesimals formed big, namely that the size of solids in the proto-planetary disk ``jumped'' from sub-meter scale to multi-kilometer scale, without passing through intermediate values. Moreover, we find evidence that the initial planetesimals ...

  10. Earthtech, Dig-Texas and Upward Bound: Outreach to At-Risk Students with Interdisciplinary STEM Activities

    Science.gov (United States)

    Olgin, J. G.; Güereque, M.; Pennington, D. D.; Everett, A.; Dixon, J. G.; Reyes, A.; Houser, P. I. Q.; Baker, J. A.; Stocks, E.; Ellins, K.

    2015-12-01

    The Geological Sciences department at the University of Texas at El Paso (UTEP) hosted the EarthTech outreach program - a one-week intensive summer camp for low-income, at-risk high school students. The EarthTech program engaged students in STEM activities from geological and environmental sciences. Developed and led by university student-mentors with guidance from a supervising faculty member, the course engaged Upward Bound students with lectures, interactive projects, and excursions to local ecological preserves and geological sites around El Paso, Texas. Topics covered plant and animal distribution and diversity, water and soil dynamics, evolution and paleontology, geohazards, and planetary science. Field trips were combined with hands-on activities, including activities from DIG Texas teaching modules. The NSF-funded DIG Texas Instructional Blueprints project is organizing vetted, high quality online educational resources and learning activities into teaching modules. The modules follow a storyline and demonstrate congruency with the Next Generation Science Standards. Selected DIG Texas resources were included in the daily curriculum to complement the field trip and other hands-on activities. EarthTech students created ESRI Online GIS story maps in which they showed the locations of the field trips, incorporated photographs they had taken, and provided written reflections about their camp experiences. The DIG Texas project evaluation collected survey and interview data from the university student mentors throughout the week to ascertain the efficacy of the program. This poster presentation will include an overview of the program, including examples of work and evaluation results.

  11. Near Earth Asteroid redirect missions based on gravity assist maneuver

    Science.gov (United States)

    Ledkov, Anton; Shustov, Boris M.; Eismont, Natan; Boyarsky, Michael; Nazirov, Ravil; Fedyaev, Konstantin

    maneuvers needed for hitting the target object. As additional option of planetary defense system construction the idea to redirect small near Earth asteroids onto the orbits resonance with the Earth orbit is explored. It is shown that it is possible to reach it by the use gravity assist maneuvers as it was described above by applying small velocity impulses to the asteroids. At least 11 asteroids were found demanded small enough delta-V for transferring them on such trajectories. After executing these maneuvers one can receive the system of asteroids approaching to the Earth practically each month with a possibility to use them as projectiles or for the purposes of delivering to the Earth their soil samples.

  12. Design study for asteroidal exploitation

    Science.gov (United States)

    Adams, Carl; Blissit, Jim; Jarrett, Dave; Sanner, Rob; Yanagawa, Koji

    1985-08-01

    A systematic approach to asteroidal exploitation for the 1990 to 2010 time frame is presented as an initial step toward expanding the use of space beyond the space station by providing a source of lower cost materials. With only a limited amount of information known about the asteroids, reconnaissance and exploration phases to determine the exact locations and compositions of several earth-approaching asteroids are required. Earth-based telescopes are used to locate and study the asteroids, while unmanned probes will return samples of asteroidal material to earth for analysis. After these phases are completed, the retrieval of a 35,000 metric ton piece of the asteroid Anteros is undertaken. A cargo transporter uses magnetoplasmadynamic (MPD) arcjets outbound and a mass-driver using asteroidal material inbound. A crew ship uses ion engines. Low thrust trajectories are used for both spacecraft. A materials processing facility will manufacture propellant pellets and retrieve non-propellant materials for spacecraft use. The cost is 1/10th that to transport the same materials from earth to high earth orbit. The project will cost 25 percent less if done in conjunction with a lunar and Martian base.

  13. Scribing Work Songs at an Archeological Dig in Egypt

    Science.gov (United States)

    Poppe, Donna

    2011-01-01

    This article reports research conducted in the northeastern corner of Egypt's Nile Delta during an excavation at the Mendes archeological dig site in July-August, 2007. Donald Redford, Professor at Pennsylvania State University, accepted the author as the only nonarcheologist that year. In addition to duties of measuring, registering, and storing…

  14. Images of an Activated Asteroid

    Science.gov (United States)

    Kohler, Susanna

    2016-08-01

    In late April of this year, asteroid P/2016 G1 (PANSTARRS) was discovered streaking through space, a tail of dust extending behind it. What caused this asteroids dust activity?Asteroid or Comet?Images of asteroid P/2016 G1 at three different times: late April, late May, and mid June. The arrow in the center panel points out an asymmetric feature that can be explained if the asteroid initially ejected material in a single direction, perhaps due to an impact. [Moreno et al. 2016]Asteroid P/2016 G1 is an interesting case: though it has the orbital elements of a main-belt asteroid it orbits at just under three times the EarthSun distance, with an eccentricity of e ~ 0.21 its appearance is closer to that of a comet, with a dust tail extending 20 behind it.To better understand the nature and cause of this unusual asteroids activity, a team led by Fernando Moreno (Institute of Astrophysics of Andalusia, in Spain) performed deep observations of P/2016 G1 shortly after its discovery. The team used the 10.4-meter Great Canary Telescope to image the asteroid over the span of roughly a month and a half.A Closer Look at P/2016 G1P/2016 G1 lies in the inner region of the main asteroid belt, so it is unlikely to have any ices that suddenly sublimated, causing the outburst. Instead, Moreno and collaborators suggest that the asteroids tail may have been caused by an impact that disrupted the parent body.To test this idea, the team used computer simulations to model their observations of P/2016 G1s dust tail. Based on their models, they demonstrate that the asteroid was likely activated on February 10 2016 roughly 350 days before it reached perihelion in its orbit and its activity was a short-duration event, lasting only ~24 days. The teams models indicate that over these 24 days, the asteroid lost around 20 million kilograms of dust, and at its maximum activity level, it was ejecting around 8 kg/s!Comparison of the observation from late May (panel a) and two models: one in which

  15. Structural Stability of Asteroids

    Science.gov (United States)

    Hirabayashi, Toshi

    This thesis develops a technique for analyzing the internal structure of an irregularly shaped asteroid. This research focuses on asteroid (216) Kleopatra, a few-hundred-kilometer-sized main belt asteroid spinning about its maximum moment of inertia axis with a rotation period of 5.385 hours, to motivate the techniques. While Ostro et al. [117] reported its dog bone-like shape, estimation of its size has been actively discussed. There are at least three different size estimates: Ostro et al., Descamps et al., and Marchis et al. Descamps et al. reported that (216) Kleopatra has satellites and obtained the mass of this object. This research consists of determination of possible failure modes of (216) Kleopatra and its subsequent detailed stress analysis, with each part including an estimation of the internal structure. The first part of this thesis considers the failure mode of Kleopatra and evaluates the size from it. Possible failure modes are modeled as either material shedding from the surface or plastic failure of the internal structure. The surface shedding condition is met when a zero-velocity curve with the same energy level as one of the dynamical equilibrium points attaches to the surface at the slowest spin period, while the plastic failure condition is characterized by extending the theorem by Holsapple (2008) that the yield condition of the averaged stress over the whole volume is identical to an upper bound for global failure. The prime result shows that while surface shedding does not occur at the current spin period and thus cannot result in the formation of the satellites, the neck may be situated near its plastic deformation state. From the failure condition, we also find that the size estimated by Descamps et al. (2011) is the most structurally stable. The second part of this thesis discusses finite element analyses with an assumption of an elastic-perfectly plastic material and a non-associated flow rule. The yield condition is modeled as the

  16. Solar wind tans young asteroids

    Science.gov (United States)

    2009-04-01

    A new study published in Nature this week reveals that asteroid surfaces age and redden much faster than previously thought -- in less than a million years, the blink of an eye for an asteroid. This study has finally confirmed that the solar wind is the most likely cause of very rapid space weathering in asteroids. This fundamental result will help astronomers relate the appearance of an asteroid to its actual history and identify any after effects of a catastrophic impact with another asteroid. ESO PR Photo 16a/09 Young Asteroids Look Old "Asteroids seem to get a ‘sun tan' very quickly," says lead author Pierre Vernazza. "But not, as for people, from an overdose of the Sun's ultraviolet radiation, but from the effects of its powerful wind." It has long been known that asteroid surfaces alter in appearance with time -- the observed asteroids are much redder than the interior of meteorites found on Earth [1] -- but the actual processes of this "space weathering" and the timescales involved were controversial. Thanks to observations of different families of asteroids [2] using ESO's New Technology Telescope at La Silla and the Very Large Telescope at Paranal, as well as telescopes in Spain and Hawaii, Vernazza's team have now solved the puzzle. When two asteroids collide, they create a family of fragments with "fresh" surfaces. The astronomers found that these newly exposed surfaces are quickly altered and change colour in less than a million years -- a very short time compared to the age of the Solar System. "The charged, fast moving particles in the solar wind damage the asteroid's surface at an amazing rate [3]", says Vernazza. Unlike human skin, which is damaged and aged by repeated overexposure to sunlight, it is, perhaps rather surprisingly, the first moments of exposure (on the timescale considered) -- the first million years -- that causes most of the aging in asteroids. By studying different families of asteroids, the team has also shown that an asteroid

  17. Asteroid named after CAS scientist

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    @@ An asteroid has been named after CAS astronomy historian XI Zezong with the approval of the International Minor Planet Nomenclature Committee (IMPNC), announced China's National Astronomical Observatories at CAS (NAOC) on 17 August.

  18. Near Earth Asteroid Scout Project

    Data.gov (United States)

    National Aeronautics and Space Administration — In considering targets for human asteroid missions, there are several major factors that will make a significant difference in assessment of mission risks that...

  19. Solar Radiation and Asteroidal Motion

    CERN Document Server

    Klacka, J

    2000-01-01

    Effects of solar wind and solar electromagnetic radiation on motion of asteroids are discussed. The results complete the statements presented in Vokrouhlick\\'{y} and Milani (2000). As for the effect of electromagnetic radiation, the complete equation of motion is presented to the first order in $v/c$ -- the shape of asteroid (spherical body is explicitly presented) and surface distribution of albedo should be taken into account. Optical quantities must be calculated in proper frame of reference.

  20. Refining the asteroid taxonomy by polarimetric observations

    Science.gov (United States)

    Belskaya, I. N.; Fornasier, S.; Tozzi, G. P.; Gil-Hutton, R.; Cellino, A.; Antonyuk, K.; Krugly, Yu. N.; Dovgopol, A. N.; Faggi, S.

    2017-03-01

    We present new results of polarimetric observations of 15 main belt asteroids of different composition. By merging new and published data we determined polarimetric parameters characterizing individual asteroids and mean values of the same parameters characterizing different taxonomic classes. The majority of asteroids show polarimetric phase curves close to the average curve of the corresponding class. We show that using polarimetric data it is possible to refine asteroid taxonomy and derive a polarimetric classification for 283 main belt asteroids. Polarimetric observations of asteroid (21) Lutetia are found to exhibit possible variations of the position angle of the polarization plane over the surface.

  1. Scratch and dig analysis for Metis mirrors surfaces defects evaluation

    Science.gov (United States)

    Špína, M.; Procháska, F.; Melich, R.

    2016-11-01

    The presented paper aims to theoretically analyze the possibilities, advantages and drawbacks of standard methods used for the assessment of optical surface defects (the so-called Scratch and Dig analysis). Based on the acquired knowledge, we design and apply a process of SaD analysis suitable for the evaluation of optical surfaces of mirrors of the space coronagraph Metis, whose manufacturing was successfully implemented within the Centre Toptec in the past period.

  2. Asteroid airburst altitude vs. strength

    Science.gov (United States)

    Robertson, Darrel; Wheeler, Lorien; Mathias, Donovan

    2016-10-01

    Small NEO asteroids (<Ø140m) may not be a threat on a national or global level but can still cause a significant amount of local damage as demonstrated by the Chelyabinsk event where there was over $33 million worth of damage (1 billion roubles) and 1500 were injured, mostly due to broken glass. The ground damage from a small asteroid depends strongly on the altitude at which they "burst" where most of the energy is deposited in the atmosphere. The ability to accurately predict ground damage is useful in determining appropriate evacuation or shelter plans and emergency management.Strong asteroids, such as a monolithic boulder, fail and create peak energy deposition close to the altitude at which ram dynamic pressure exceeds the material cohesive strength. Weaker asteroids, such as a rubble pile, structurally fail at higher altitude, but it requires the increased aerodynamic pressure at lower altitude to disrupt and disperse the rubble. Consequently the resulting airbursts have a peak energy deposition at similar altitudes.In this study hydrocode simulations of the entry and break-up of small asteroids were performed to examine the effect of strength, size, composition, entry angle, and speed on the resulting airburst. This presentation will show movies of the simulations, the results of peak burst height, and the comparison to semi-analytical models.

  3. A Gravitational Tractor for Towing Asteroids

    CERN Document Server

    Lu, E T; Lu, Edward T.; Categories, Stanley G. Love

    2005-01-01

    We present a concept for a spacecraft that can controllably alter the trajectory of an Earth threatening asteroid using gravity as a towline. The spacecraft hovers near the asteroid with thrusters angled outward so the exhaust does not impinge on the surface. This deflection method is insensitive to the structure, surface properties, and rotation state of the asteroid.

  4. Benchmarking Asteroid-Deflection Experiment

    Science.gov (United States)

    Remington, Tane; Bruck Syal, Megan; Owen, John Michael; Miller, Paul L.

    2016-10-01

    An asteroid impacting Earth could have devastating consequences. In preparation to deflect or disrupt one before it reaches Earth, it is imperative to have modeling capabilities that adequately simulate the deflection actions. Code validation is key to ensuring full confidence in simulation results used in an asteroid-mitigation plan. We are benchmarking well-known impact experiments using Spheral, an adaptive smoothed-particle hydrodynamics code, to validate our modeling of asteroid deflection. We describe our simulation results, compare them with experimental data, and discuss what we have learned from our work. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. LLNL-ABS-695540

  5. On the Astrid asteroid family

    CERN Document Server

    Carruba, V

    2016-01-01

    Among asteroid families, the Astrid family is peculiar because of its unusual inclination distribution. Objects at $a\\simeq$~2.764 au are quite dispersed in this orbital element, giving the family a "crab-like" appearance. Recent works showed that this feature is caused by the interaction of the family with the $s-s_C$ nodal secular resonance with Ceres, that spreads the inclination of asteroids near its separatrix. As a consequence, the currently observed distribution of the $v_W$ component of terminal ejection velocities obtained from inverting Gauss equation is quite leptokurtic, since this parameter mostly depends on the asteroids inclination. The peculiar orbital configuration of the Astrid family can be used to set constraints on key parameters describing the strength of the Yarkovsky force, such as the bulk and surface density and the thermal conductivity of surface material. By simulating various fictitious families with different values of these parameters, and by demanding that the current value of ...

  6. Radish Harvester Design and Finite Element Analysis of Digging Shovel%白萝卜收获机挖掘铲参数的设计

    Institute of Scientific and Technical Information of China (English)

    周国龙; 张晋国; 王洪伟; 顾旭彪; 杨进; 刘利坤

    2016-01-01

    In this paper,radish China reaped by low efficiency and high cost problem, design a special green radish dig-ging shovel.First step by digging shovel destroy the radish and the contact force of the soil, radish, separating from the soil, the second step by artificial collecting bag and then finish the whole course of radish harvest.By establishing a geo-metric model of the digging shovel capacity determines the angle of alpha,the shovel length L and width of the shovel a and the back face height h.Suspension traction after the mining device adopts the way of mining radish, make green rad-ish harvest efficiency is greatly raised, device has the advantages of simple structure, low cost, has the extremely broad market application scenario.%针对我国白萝卜人工收获效率低、成本高等问题,设计出专用的白萝卜挖掘铲。工作时,第1步通过挖掘铲破坏白萝卜与土壤的接触力,使白萝卜与土壤分离,第2步由人工捡拾装袋进而完成白萝卜收获的全过程。通过建立挖掘铲的几何模型确定了入土角α、铲面长度L、铲面宽度 A和后端面高度 h。该挖掘装置采用后悬挂牵引的方式挖掘白萝卜,使白萝卜的收获效率大大提高,装置结构简易、成本低,具有极其广阔的市场应用场景。

  7. Spectral Classification of Asteroids by Random Forest

    Science.gov (United States)

    Huang, C.; Ma, Y. H.; Zhao, H. B.; Lu, X. P.

    2016-09-01

    With the increasing asteroid spectral and photometric data, a variety of classification methods for asteroids have been proposed. This paper classifies asteroids based on the observations of Sloan Digital Sky Survey (SDSS) Moving Object Catalogue (MOC) by using the random forest algorithm. With the training data derived from the taxonomies of Tholen, Bus, Lazzaro, DeMeo, and Principal Component Analysis, we classify 48642 asteroids according to g, r, i, and z SDSS magnitudes. In this way, asteroids are divided into 8 spectral classes (C, X, S, B, D, K, L, and V).

  8. Flying Through Dust From Asteroids

    Science.gov (United States)

    Kohler, Susanna

    2016-11-01

    How can we tell what an asteroid is made of? Until now, weve relied on remote spectral observations, though NASAs recently launched OSIRIS-REx mission may soon change this by landing on an asteroid and returning with a sample.But what if we could learn more about the asteroids near Earth without needing to land on each one? It turns out that we can by flying through their dust.The aerogel dust collector of the Stardust mission. [NASA/JPL/Caltech]Ejected CluesWhen an airless body is impacted by the meteoroids prevalent throughout our solar system, ejecta from the body are flung into the space around it. In the case of small objects like asteroids, their gravitational pull is so weak that most of the ejected material escapes, forming a surrounding cloud of dust.By flying a spacecraft through this cloud, we could perform chemical analysis of the dust, thereby determining the asteroids composition. We could even capture some of the dust during a flyby (for example, by using an aerogel collector like in the Stardust mission) and bring it back home to analyze.So whats the best place to fly a dust-analyzing or -collecting spacecraft? To answer this, we need to know what the typical distribution of dust is around a near-Earth asteroid (NEA) a problem that scientists Jamey Szalay (Southwest Research Institute) and Mihly Hornyi (University of Colorado Boulder) address in a recent study.The colors show the density distribution for dust grains larger than 0.3 m around a body with a 10-km radius. The distribution is asymmetric, with higher densities on the apex side, shown here in the +y direction. [Szalay Hornyi 2016]Moon as a LaboratoryTo determine typical dust distributions around NEAs, Szalay and Hornyi first look at the distribution of dust around our own Moon, caused by the same barrage of meteorites wed expect to impact NEAs. The Moons dust cloud was measured in situ in 2013 and 2014 by the Lunar Dust Experiment (LDEX) on board the Lunar Atmosphere and Dust Environment

  9. AsteroidZoo: A New Zooniverse project to detect asteroids and improve asteroid detection algorithms

    Science.gov (United States)

    Beasley, M.; Lewicki, C. A.; Smith, A.; Lintott, C.; Christensen, E.

    2013-12-01

    We present a new citizen science project: AsteroidZoo. A collaboration between Planetary Resources, Inc., the Zooniverse Team, and the Catalina Sky Survey, we will bring the science of asteroid identification to the citizen scientist. Volunteer astronomers have proved to be a critical asset in identification and characterization of asteroids, especially potentially hazardous objects. These contributions, to date, have required that the volunteer possess a moderate telescope and the ability and willingness to be responsive to observing requests. Our new project will use data collected by the Catalina Sky Survey (CSS), currently the most productive asteroid survey, to be used by anyone with sufficient interest and an internet connection. As previous work by the Zooniverse has demonstrated, the capability of the citizen scientist is superb at classification of objects. Even the best automated searches require human intervention to identify new objects. These searches are optimized to reduce false positive rates and to prevent a single operator from being overloaded with requests. With access to the large number of people in Zooniverse, we will be able to avoid that problem and instead work to produce a complete detection list. Each frame from CSS will be searched in detail, generating a large number of new detections. We will be able to evaluate the completeness of the CSS data set and potentially provide improvements to the automated pipeline. The data corpus produced by AsteroidZoo will be used as a training environment for machine learning challenges in the future. Our goals include a more complete asteroid detection algorithm and a minimum computation program that skims the cream of the data suitable for implemention on small spacecraft. Our goal is to have the site become live in the Fall 2013.

  10. Asteroid taxonomic signatures from photometric phase curves

    CERN Document Server

    Oszkiewicz, D A; Wasserman, L H; Muinonen, K; Penttilä, A; Pieniluoma, T; Trilling, D E; Thomas, C A

    2012-01-01

    We explore the correlation between an asteroid's taxonomy and photometric phase curve using the H, G12 photometric phase function, with the shape of the phase function described by the single parameter G12. We explore the usability of G12 in taxonomic classification for individual objects, asteroid families, and dynamical groups. We conclude that the mean values of G12 for the considered taxonomic complexes are statistically different, and also discuss the overall shape of the G12 distribution for each taxonomic complex. Based on the values of G12 for about half a million asteroids, we compute the probabilities of C, S, and X complex membership for each asteroid. For an individual asteroid, these probabilities are rather evenly distributed over all of the complexes, thus preventing meaningful classification. We then present and discuss the G12 distributions for asteroid families, and predict the taxonomic complex preponderance for asteroid families given the distribution of G12 in each family. For certain ast...

  11. Astronomical Observations of Volatiles on Asteroids

    CERN Document Server

    Rivkin, Andrew S; Emery, Joshua P; Howell, Ellen S; Licandro, Javier; Takir, Driss; Vilas, Faith

    2015-01-01

    We have long known that water and hydroxyl are important components in meteorites and asteroids. However, in the time since the publication of Asteroids III, evolution of astronomical instrumentation, laboratory capabilities, and theoretical models have led to great advances in our understanding of H2O/OH on small bodies, and spacecraft observations of the Moon and Vesta have important implications for our interpretations of the asteroidal population. We begin this chapter with the importance of water/OH in asteroids, after which we will discuss their spectral features throughout the visible and near-infrared. We continue with an overview of the findings in meteorites and asteroids, closing with a discussion of future opportunities, the results from which we can anticipate finding in Asteroids V. Because this topic is of broad importance to asteroids, we also point to relevant in-depth discussions elsewhere in this volume.

  12. Building a scientific data grid with DiGS.

    Science.gov (United States)

    Beckett, Mark G; Allton, Chris R; Davies, Christine T H; Davis, Ilan; Flynn, Jonathan M; Grant, Eilidh J; Hamilton, Russell S; Irving, Alan C; Kenway, R D; Ostrowski, Radoslaw H; Perry, James T; Swedlow, Jason R; Trew, Arthur

    2009-06-28

    We provide an insight into the challenge of building and supporting a scientific data infrastructure with reference to our experience working with scientists from computational particle physics and molecular biology. We illustrate how, with modern high-performance computing resources, even small scientific groups can generate huge volumes (petabytes) of valuable scientific data and explain how grid technology can be used to manage, publish, share and curate these data. We describe the DiGS software application, which we have developed to meet the needs of smaller communities and we have highlighted the key elements of its functionality.

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    Full Text Available Pol.Dig.10.RNA_Polymerase_II.AllCell mm9 RNA polymerase RNA Polymerase II Digestive... tract SRX112957,SRX143802 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.10.RNA_Polymerase_II.AllCell.bed ...

  5. File list: ALL.Dig.05.AllAg.Stomach [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.05.AllAg.Stomach hg19 All antigens Digestive tract Stomach SRX252720,SRX252...55162,SRX121286,SRX055202,SRX201194,SRX055185,SRX121291,SRX055192,SRX214043,SRX252726 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.05.AllAg.Stomach.bed ...

  6. File list: DNS.Dig.10.AllAg.Gastric_primary_sample [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.10.AllAg.Gastric_primary_sample hg19 DNase-seq Digestive tract Gastric prim...ary sample SRX201807,SRX201812 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/DNS.Dig.10.AllAg.Gastric_primary_sample.bed ...

  7. File list: Oth.Dig.05.AllAg.Gastric_tumor [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.05.AllAg.Gastric_tumor mm9 TFs and others Digestive tract Gastric tumor SRX...315102,SRX315095,SRX315094,SRX315096,SRX315101,SRX315100 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.05.AllAg.Gastric_tumor.bed ...

  8. File list: DNS.Dig.05.AllAg.Gastric_primary_sample [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.05.AllAg.Gastric_primary_sample hg19 DNase-seq Digestive tract Gastric prim...ary sample SRX201807,SRX201812 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/DNS.Dig.05.AllAg.Gastric_primary_sample.bed ...

  9. File list: His.Dig.05.AllAg.Gastric_primary_sample [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.05.AllAg.Gastric_primary_sample hg19 Histone Digestive tract Gastric primar...105,SRX369094,SRX369095 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Dig.05.AllAg.Gastric_primary_sample.bed ...

  10. File list: Pol.Dig.05.AllAg.Gastric_primary_sample [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.05.AllAg.Gastric_primary_sample hg19 RNA polymerase Digestive tract Gastric... primary sample http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Pol.Dig.05.AllAg.Gastric_primary_sample.bed ...

  11. File list: DNS.Dig.50.AllAg.Gastric_primary_sample [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.50.AllAg.Gastric_primary_sample hg19 DNase-seq Digestive tract Gastric prim...ary sample SRX201807,SRX201812 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/DNS.Dig.50.AllAg.Gastric_primary_sample.bed ...

  12. File list: Oth.Dig.05.AllAg.Gastric_primary_sample [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.05.AllAg.Gastric_primary_sample hg19 TFs and others Digestive tract Gastric... primary sample http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.05.AllAg.Gastric_primary_sample.bed ...

  13. File list: Oth.Dig.10.AllAg.Gastric_primary_sample [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.10.AllAg.Gastric_primary_sample hg19 TFs and others Digestive tract Gastric... primary sample http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.10.AllAg.Gastric_primary_sample.bed ...

  14. File list: Pol.Dig.20.AllAg.Gastric_primary_sample [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.20.AllAg.Gastric_primary_sample hg19 RNA polymerase Digestive tract Gastric... primary sample http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Pol.Dig.20.AllAg.Gastric_primary_sample.bed ...

  15. File list: DNS.Dig.20.AllAg.Gastric_primary_sample [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.20.AllAg.Gastric_primary_sample hg19 DNase-seq Digestive tract Gastric prim...ary sample SRX201807,SRX201812 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/DNS.Dig.20.AllAg.Gastric_primary_sample.bed ...

  16. File list: Oth.Dig.50.AllAg.Gastric_primary_sample [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.50.AllAg.Gastric_primary_sample hg19 TFs and others Digestive tract Gastric... primary sample http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.50.AllAg.Gastric_primary_sample.bed ...

  17. File list: Pol.Dig.50.AllAg.Gastric_primary_sample [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.50.AllAg.Gastric_primary_sample hg19 RNA polymerase Digestive tract Gastric... primary sample http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Pol.Dig.50.AllAg.Gastric_primary_sample.bed ...

  18. File list: Unc.Dig.20.AllAg.Gastric_primary_sample [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Dig.20.AllAg.Gastric_primary_sample hg19 Unclassified Digestive tract Gastric p...rimary sample http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Dig.20.AllAg.Gastric_primary_sample.bed ...

  19. File list: His.Dig.20.AllAg.Gastric_primary_sample [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.20.AllAg.Gastric_primary_sample hg19 Histone Digestive tract Gastric primar...096,SRX369094,SRX369095 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Dig.20.AllAg.Gastric_primary_sample.bed ...

  20. File list: Pol.Dig.10.AllAg.Gastric_primary_sample [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.10.AllAg.Gastric_primary_sample hg19 RNA polymerase Digestive tract Gastric... primary sample http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Pol.Dig.10.AllAg.Gastric_primary_sample.bed ...

  1. File list: Unc.Dig.50.AllAg.Gastric_primary_sample [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Dig.50.AllAg.Gastric_primary_sample hg19 Unclassified Digestive tract Gastric p...rimary sample http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Dig.50.AllAg.Gastric_primary_sample.bed ...

  2. File list: ALL.Dig.20.AllAg.Gastric_tumor [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.20.AllAg.Gastric_tumor mm9 All antigens Digestive tract Gastric tumor SRX31...5102,SRX315096,SRX315100,SRX315094,SRX315095,SRX315101 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Dig.20.AllAg.Gastric_tumor.bed ...

  3. File list: Unc.Dig.05.AllAg.Gastric_primary_sample [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Dig.05.AllAg.Gastric_primary_sample hg19 Unclassified Digestive tract Gastric p...rimary sample http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Dig.05.AllAg.Gastric_primary_sample.bed ...

  4. File list: His.Dig.10.AllAg.Gastric_primary_sample [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.10.AllAg.Gastric_primary_sample hg19 Histone Digestive tract Gastric primar...095,SRX369094,SRX369099 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Dig.10.AllAg.Gastric_primary_sample.bed ...

  5. File list: ALL.Dig.10.AllAg.Gastric_tumor [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.10.AllAg.Gastric_tumor mm9 All antigens Digestive tract Gastric tumor SRX31...5102,SRX315094,SRX315095,SRX315096,SRX315100,SRX315101 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Dig.10.AllAg.Gastric_tumor.bed ...

  6. File list: Oth.Dig.20.AllAg.Gastric_primary_sample [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.20.AllAg.Gastric_primary_sample hg19 TFs and others Digestive tract Gastric... primary sample http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.20.AllAg.Gastric_primary_sample.bed ...

  7. File list: Oth.Dig.10.Crotonyl_lysine.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.10.Crotonyl_lysine.AllCell mm9 TFs and others Crotonyl lysine Digestive tra...ct http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.10.Crotonyl_lysine.AllCell.bed ...

  8. File list: Oth.Dig.20.Crotonyl_lysine.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.20.Crotonyl_lysine.AllCell mm9 TFs and others Crotonyl lysine Digestive tra...ct http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.20.Crotonyl_lysine.AllCell.bed ...

  9. File list: His.Dig.50.Pan_lysine_crotonylation.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.50.Pan_lysine_crotonylation.AllCell hg19 Histone Pan lysine crotonylation D...igestive tract http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Dig.50.Pan_lysine_crotonylation.AllCell.bed ...

  10. File list: Oth.Dig.10.MECP2.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.10.MECP2.AllCell hg19 TFs and others MECP2 Digestive tract SRX295040,SRX295...039 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.10.MECP2.AllCell.bed ...

  11. File list: Oth.Dig.05.MECP2.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.05.MECP2.AllCell hg19 TFs and others MECP2 Digestive tract SRX295040,SRX295...039 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.05.MECP2.AllCell.bed ...

  12. File list: Oth.Dig.20.MECP2.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.20.MECP2.AllCell hg19 TFs and others MECP2 Digestive tract SRX295040,SRX295...039 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.20.MECP2.AllCell.bed ...

  13. File list: Oth.Dig.05.AllAg.Crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.05.AllAg.Crypt mm9 TFs and others Digestive tract Crypt SRX365692,SRX856963...,SRX856958,SRX856962,SRX396312,SRX648716 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.05.AllAg.Crypt.bed ...

  14. File list: InP.Dig.05.AllAg.Crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.05.AllAg.Crypt hg19 Input control Digestive tract Crypt SRX124701,SRX124700...,SRX124702 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Dig.05.AllAg.Crypt.bed ...

  15. File list: ALL.Dig.10.AllAg.Crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.10.AllAg.Crypt mm9 All antigens Digestive tract Crypt SRX365690,SRX365691,S...,SRX856956,SRX856957,SRX396312,SRX365694,SRX648716 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Dig.10.AllAg.Crypt.bed ...

  16. File list: His.Dig.10.Pan_lysine_acetylation.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.10.Pan_lysine_acetylation.AllCell mm9 Histone Pan lysine acetylation Digest...ive tract http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/His.Dig.10.Pan_lysine_acetylation.AllCell.bed ...

  17. File list: His.Dig.05.Pan_lysine_acetylation.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.05.Pan_lysine_acetylation.AllCell mm9 Histone Pan lysine acetylation Digest...ive tract http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/His.Dig.05.Pan_lysine_acetylation.AllCell.bed ...

  18. File list: His.Dig.10.Pan_lysine_acetylation.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.10.Pan_lysine_acetylation.AllCell hg19 Histone Pan lysine acetylation Diges...tive tract http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Dig.10.Pan_lysine_acetylation.AllCell.bed ...

  19. File list: ALL.Dig.20.AllAg.Stomach [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.20.AllAg.Stomach hg19 All antigens Digestive tract Stomach SRX252741,SRX252...01194,SRX121286,SRX055202,SRX121291,SRX055185,SRX214043,SRX055192,SRX252723,SRX252726 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.20.AllAg.Stomach.bed ...

  20. File list: NoD.Dig.50.AllAg.Stomach [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.50.AllAg.Stomach hg19 No description Digestive tract Stomach SRX252741,SRX2...52720,SRX252731,SRX252737,SRX252723,SRX252726 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Dig.50.AllAg.Stomach.bed ...

  1. File list: Oth.Dig.10.AllAg.Gastric_tumor [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.10.AllAg.Gastric_tumor mm9 TFs and others Digestive tract Gastric tumor SRX...315102,SRX315094,SRX315095,SRX315096,SRX315100,SRX315101 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.10.AllAg.Gastric_tumor.bed ...

  2. File list: Pol.Dig.10.AllAg.Intestinal_villus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.10.AllAg.Intestinal_villus mm9 RNA polymerase Digestive tract Intestinal vi...llus http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.10.AllAg.Intestinal_villus.bed ...

  3. File list: Oth.Dig.10.AllAg.Intestinal_crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.10.AllAg.Intestinal_crypt mm9 TFs and others Digestive tract Intestinal cry...pt SRX871676,SRX871671,SRX871675,SRX871672 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.10.AllAg.Intestinal_crypt.bed ...

  4. File list: NoD.Dig.50.NA.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.50.NA.AllCell mm9 No description NA Digestive tract ERX421319,ERX421334,ERX...RX161578,ERX161582,ERX161581,ERX421330 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/NoD.Dig.50.NA.AllCell.bed ...

  5. File list: ALL.Dig.10.AllAg.Stomach [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.10.AllAg.Stomach hg19 All antigens Digestive tract Stomach SRX252720,SRX252...21286,SRX055202,SRX201194,SRX055185,SRX121291,SRX055192,SRX214043,SRX252723,SRX252726 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.10.AllAg.Stomach.bed ...

  6. File list: NoD.Dig.10.AllAg.Stomach [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.10.AllAg.Stomach hg19 No description Digestive tract Stomach SRX252720,SRX2...52731,SRX252741,SRX252737,SRX252723,SRX252726 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Dig.10.AllAg.Stomach.bed ...

  7. File list: DNS.Dig.05.AllAg.Stomach [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.05.AllAg.Stomach hg19 DNase-seq Digestive tract Stomach SRX089271,SRX100995...91,SRX055192,SRX214043 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/DNS.Dig.05.AllAg.Stomach.bed ...

  8. File list: NoD.Dig.20.AllAg.Stomach [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.20.AllAg.Stomach hg19 No description Digestive tract Stomach SRX252741,SRX2...52720,SRX252731,SRX252737,SRX252723,SRX252726 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Dig.20.AllAg.Stomach.bed ...

  9. File list: DNS.Dig.10.AllAg.Stomach [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.10.AllAg.Stomach hg19 DNase-seq Digestive tract Stomach SRX089271,SRX100995...91,SRX055192,SRX214043 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/DNS.Dig.10.AllAg.Stomach.bed ...

  10. File list: NoD.Dig.05.AllAg.Stomach [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.05.AllAg.Stomach hg19 No description Digestive tract Stomach SRX252720,SRX2...52731,SRX252741,SRX252737,SRX252723,SRX252726 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Dig.05.AllAg.Stomach.bed ...

  11. File list: DNS.Dig.50.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.50.AllAg.Intestine,_Small hg19 DNase-seq Digestive tract Intestine, Small S...,SRX201835,SRX252605,SRX201814,SRX055194,SRX055160 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/DNS.Dig.50.AllAg.Intestine,_Small.bed ...

  12. File list: NoD.Dig.10.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.10.AllAg.Intestinal_adenoma mm9 No description Digestive tract Intestinal a...denoma http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/NoD.Dig.10.AllAg.Intestinal_adenoma.bed ...

  13. File list: ALL.Dig.20.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.20.AllAg.Intestinal_adenoma mm9 All antigens Digestive tract Intestinal ade...noma SRX648718,SRX648717 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Dig.20.AllAg.Intestinal_adenoma.bed ...

  14. File list: ALL.Dig.05.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.05.AllAg.Intestine,_Small mm9 All antigens Digestive tract Intestine, Small...7,SRX885796,SRX885801 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Dig.05.AllAg.Intestine,_Small.bed ...

  15. File list: Unc.Dig.50.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Dig.50.AllAg.Intestinal_adenoma mm9 Unclassified Digestive tract Intestinal ade...noma SRX648717 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Unc.Dig.50.AllAg.Intestinal_adenoma.bed ...

  16. File list: Unc.Dig.05.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Dig.05.AllAg.Intestine,_Small hg19 Unclassified Digestive tract Intestine, Smal...l http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Dig.05.AllAg.Intestine,_Small.bed ...

  17. File list: Oth.Dig.10.REST.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.10.REST.AllCell hg19 TFs and others REST Digestive tract SRX360593,SRX36057...9,SRX359918,SRX190325 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.10.REST.AllCell.bed ...

  18. File list: Oth.Dig.05.REST.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.05.REST.AllCell hg19 TFs and others REST Digestive tract SRX360593,SRX35991...8,SRX360579,SRX190325 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.05.REST.AllCell.bed ...

  19. File list: Oth.Dig.20.REST.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.20.REST.AllCell hg19 TFs and others REST Digestive tract SRX360593,SRX36057...9,SRX359918,SRX190325 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.20.REST.AllCell.bed ...

  20. File list: Oth.Dig.50.REST.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.50.REST.AllCell hg19 TFs and others REST Digestive tract SRX360593,SRX36057...9,SRX359918,SRX190325 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.50.REST.AllCell.bed ...

  1. File list: InP.Dig.20.AllAg.Colon [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.20.AllAg.Colon mm9 Input control Digestive tract Colon SRX276118,SRX376980,...SRX376981,SRX376973 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Dig.20.AllAg.Colon.bed ...

  2. File list: InP.Dig.10.AllAg.Colon [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.10.AllAg.Colon mm9 Input control Digestive tract Colon SRX276118,SRX376973,...SRX376980,SRX376981 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Dig.10.AllAg.Colon.bed ...

  3. File list: ALL.Dig.05.AllAg.Colon [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.05.AllAg.Colon hg19 All antigens Digestive tract Colon SRX213493,SRX213496,...38,SRX142120,SRX863778,SRX055154,SRX136955,SRX157645,SRX263914 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.05.AllAg.Colon.bed ...

  4. File list: His.Dig.50.Pan_lysine_acetylation.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.50.Pan_lysine_acetylation.AllCell hg19 Histone Pan lysine acetylation Diges...tive tract http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Dig.50.Pan_lysine_acetylation.AllCell.bed ...

  5. File list: His.Dig.05.Pan_lysine_acetylation.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.05.Pan_lysine_acetylation.AllCell hg19 Histone Pan lysine acetylation Diges...tive tract http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Dig.05.Pan_lysine_acetylation.AllCell.bed ...

  6. File list: His.Dig.20.Pan_lysine_acetylation.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.20.Pan_lysine_acetylation.AllCell hg19 Histone Pan lysine acetylation Diges...tive tract http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Dig.20.Pan_lysine_acetylation.AllCell.bed ...

  7. File list: InP.Dig.10.Input_control.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.10.Input_control.AllCell mm9 Input control Input control Digestive tract SR...X193725,ERX040284,SRX376981 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Dig.10.Input_control.AllCell.bed ...

  8. File list: Oth.Dig.10.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.10.AllAg.Intestinal_stem_cells mm9 TFs and others Digestive tract Intestinal st...em cells SRX1141904,SRX856961,SRX1141903 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.10.AllAg.Intestinal_stem_cells.bed ...

  9. File list: ALL.Dig.50.AllAg.GIST-48 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.50.AllAg.GIST-48 hg19 All antigens Digestive tract GIST-48 SRX825987,SRX023...216,SRX023215,SRX825986 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.50.AllAg.GIST-48.bed ...

  10. File list: ALL.Dig.10.AllAg.GIST-48 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.10.AllAg.GIST-48 hg19 All antigens Digestive tract GIST-48 SRX825987,SRX023...216,SRX023215,SRX825986 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.10.AllAg.GIST-48.bed ...

  11. File list: ALL.Dig.20.AllAg.GIST-48 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.20.AllAg.GIST-48 hg19 All antigens Digestive tract GIST-48 SRX825987,SRX023...216,SRX825986,SRX023215 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.20.AllAg.GIST-48.bed ...

  12. File list: ALL.Dig.20.AllAg.KYSE-70 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available 131,SRX277130 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.20.AllAg.KYSE-70.bed ... ...ALL.Dig.20.AllAg.KYSE-70 hg19 All antigens Digestive tract KYSE-70 SRX277132,SRX277

  13. File list: Oth.Dig.10.AllAg.KYSE-70 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available 77131 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.10.AllAg.KYSE-70.bed ... ...Oth.Dig.10.AllAg.KYSE-70 hg19 TFs and others Digestive tract KYSE-70 SRX277132,SRX2

  14. File list: Oth.Dig.05.AllAg.KYSE-150 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available X424010 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.05.AllAg.KYSE-150.bed ... ...Oth.Dig.05.AllAg.KYSE-150 hg19 TFs and others Digestive tract KYSE-150 SRX424011,SR

  15. File list: Oth.Dig.50.AllAg.KYSE-70 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available 77132 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.50.AllAg.KYSE-70.bed ... ...Oth.Dig.50.AllAg.KYSE-70 hg19 TFs and others Digestive tract KYSE-70 SRX277131,SRX2

  16. File list: ALL.Dig.20.AllAg.KYSE-150 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available 24012,SRX424011,SRX424017,SRX424010,SRX424015,SRX424013,SRX424014 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.20.AllAg.KYSE-150.bed ... ...ALL.Dig.20.AllAg.KYSE-150 hg19 All antigens Digestive tract KYSE-150 SRX424016,SRX4

  17. File list: ALL.Dig.10.AllAg.KYSE-150 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available 24011,SRX424012,SRX424015,SRX424017,SRX424010,SRX424013,SRX424014 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.10.AllAg.KYSE-150.bed ... ...ALL.Dig.10.AllAg.KYSE-150 hg19 All antigens Digestive tract KYSE-150 SRX424016,SRX4

  18. File list: ALL.Dig.05.AllAg.KYSE-150 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available 24016,SRX424012,SRX424015,SRX424017,SRX424010,SRX424013,SRX424014 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.05.AllAg.KYSE-150.bed ... ...ALL.Dig.05.AllAg.KYSE-150 hg19 All antigens Digestive tract KYSE-150 SRX424011,SRX4

  19. File list: Oth.Dig.05.AllAg.KYSE-70 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available 77131 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.05.AllAg.KYSE-70.bed ... ...Oth.Dig.05.AllAg.KYSE-70 hg19 TFs and others Digestive tract KYSE-70 SRX277132,SRX2

  20. File list: His.Dig.50.AllAg.KYSE-150 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ,SRX424016,SRX424013,SRX424014 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Dig.50.AllAg.KYSE-150.bed ... ...His.Dig.50.AllAg.KYSE-150 hg19 Histone Digestive tract KYSE-150 SRX424017,SRX424015

  1. File list: Oth.Dig.20.AllAg.KYSE-70 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available 77131 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.20.AllAg.KYSE-70.bed ... ...Oth.Dig.20.AllAg.KYSE-70 hg19 TFs and others Digestive tract KYSE-70 SRX277132,SRX2

  2. File list: His.Dig.20.AllAg.KYSE-150 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ,SRX424015,SRX424013,SRX424014 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Dig.20.AllAg.KYSE-150.bed ... ...His.Dig.20.AllAg.KYSE-150 hg19 Histone Digestive tract KYSE-150 SRX424016,SRX424017

  3. File list: ALL.Dig.05.AllAg.KYSE-70 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available 132,SRX277131 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.05.AllAg.KYSE-70.bed ... ...ALL.Dig.05.AllAg.KYSE-70 hg19 All antigens Digestive tract KYSE-70 SRX277130,SRX277

  4. File list: Oth.Dig.10.AllAg.KYSE-150 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available X424010 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.10.AllAg.KYSE-150.bed ... ...Oth.Dig.10.AllAg.KYSE-150 hg19 TFs and others Digestive tract KYSE-150 SRX424011,SR

  5. File list: ALL.Dig.10.AllAg.KYSE-70 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available 130,SRX277131 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.10.AllAg.KYSE-70.bed ... ...ALL.Dig.10.AllAg.KYSE-70 hg19 All antigens Digestive tract KYSE-70 SRX277132,SRX277

  6. File list: ALL.Dig.50.AllAg.KYSE-70 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available 132,SRX277130 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.50.AllAg.KYSE-70.bed ... ...ALL.Dig.50.AllAg.KYSE-70 hg19 All antigens Digestive tract KYSE-70 SRX277131,SRX277

  7. File list: Oth.Dig.20.AllAg.KYSE-150 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available X424010 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.20.AllAg.KYSE-150.bed ... ...Oth.Dig.20.AllAg.KYSE-150 hg19 TFs and others Digestive tract KYSE-150 SRX424011,SR

  8. File list: InP.Dig.50.AllAg.Colon_cancer [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.50.AllAg.Colon_cancer hg19 Input control Digestive tract Colon cancer SRX12...155774,SRX124693,SRX124698 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Dig.50.AllAg.Colon_cancer.bed ...

  9. File list: Unc.Dig.50.AllAg.Colon_cancer [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Dig.50.AllAg.Colon_cancer hg19 Unclassified Digestive tract Colon cancer SRX115...0169,SRX1150170,SRX124703 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Dig.50.AllAg.Colon_cancer.bed ...

  10. File list: InP.Dig.10.AllAg.Colon_cancer [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.10.AllAg.Colon_cancer hg19 Input control Digestive tract Colon cancer SRX12...155774,SRX625671,SRX155777 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Dig.10.AllAg.Colon_cancer.bed ...

  11. File list: Unc.Dig.05.AllAg.Colon_cancer [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Dig.05.AllAg.Colon_cancer hg19 Unclassified Digestive tract Colon cancer SRX115...0169,SRX1150170,SRX124703 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Dig.05.AllAg.Colon_cancer.bed ...

  12. File list: Oth.Dig.20.AllAg.Colon_cancer [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.20.AllAg.Colon_cancer hg19 TFs and others Digestive tract Colon cancer SRX1...55772,SRX155773,SRX155775,SRX155776 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.20.AllAg.Colon_cancer.bed ...

  13. File list: Oth.Dig.10.AllAg.Colon_cancer [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.10.AllAg.Colon_cancer hg19 TFs and others Digestive tract Colon cancer SRX1...55772,SRX155775,SRX155773,SRX155776 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.10.AllAg.Colon_cancer.bed ...

  14. File list: Unc.Dig.10.AllAg.Colon_cancer [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Dig.10.AllAg.Colon_cancer hg19 Unclassified Digestive tract Colon cancer SRX115...0169,SRX124703,SRX1150170 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Dig.10.AllAg.Colon_cancer.bed ...

  15. File list: Oth.Dig.05.AllAg.Colon_cancer [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.05.AllAg.Colon_cancer hg19 TFs and others Digestive tract Colon cancer SRX1...55772,SRX155773,SRX155775,SRX155776 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.05.AllAg.Colon_cancer.bed ...

  16. File list: InP.Dig.20.AllAg.Colon_cancer [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.20.AllAg.Colon_cancer hg19 Input control Digestive tract Colon cancer SRX12...124693,SRX124697,SRX124698 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Dig.20.AllAg.Colon_cancer.bed ...

  17. File list: InP.Dig.05.AllAg.Colon_cancer [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.05.AllAg.Colon_cancer hg19 Input control Digestive tract Colon cancer SRX12...124693,SRX124695,SRX124694 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Dig.05.AllAg.Colon_cancer.bed ...

  18. File list: Oth.Dig.50.AllAg.Colon_cancer [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.50.AllAg.Colon_cancer hg19 TFs and others Digestive tract Colon cancer SRX1...55772,SRX155775,SRX155773,SRX155776 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.50.AllAg.Colon_cancer.bed ...

  19. File list: Unc.Dig.20.AllAg.Colon_cancer [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Dig.20.AllAg.Colon_cancer hg19 Unclassified Digestive tract Colon cancer SRX115...0169,SRX1150170,SRX124703 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Dig.20.AllAg.Colon_cancer.bed ...

  20. File list: Oth.Dig.05.TP53.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.05.TP53.AllCell hg19 TFs and others TP53 Digestive tract SRX672732,SRX60337...2,SRX672731,SRX603373,SRX612780 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.05.TP53.AllCell.bed ...

  1. File list: Oth.Dig.10.TP53.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.10.TP53.AllCell hg19 TFs and others TP53 Digestive tract SRX672732,SRX60337...3,SRX612780,SRX603372,SRX672731 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.10.TP53.AllCell.bed ...

  2. File list: Oth.Dig.50.TP53.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.50.TP53.AllCell hg19 TFs and others TP53 Digestive tract SRX603373,SRX67273...2,SRX603372,SRX672731,SRX612780 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.50.TP53.AllCell.bed ...

  3. File list: DNS.Dig.50.AllAg.Stomach [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.50.AllAg.Stomach hg19 DNase-seq Digestive tract Stomach SRX089271,SRX100995...43,SRX055185,SRX055192 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/DNS.Dig.50.AllAg.Stomach.bed ...

  4. File list: DNS.Dig.20.AllAg.Stomach [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.20.AllAg.Stomach hg19 DNase-seq Digestive tract Stomach SRX089271,SRX100995...85,SRX214043,SRX055192 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/DNS.Dig.20.AllAg.Stomach.bed ...

  5. File list: ALL.Dig.50.AllAg.Stomach [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.50.AllAg.Stomach hg19 All antigens Digestive tract Stomach SRX252741,SRX252...01194,SRX121286,SRX055202,SRX121291,SRX214043,SRX252723,SRX055185,SRX055192,SRX252726 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.50.AllAg.Stomach.bed ...

  6. File list: Oth.Dig.10.Epitope_tags.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.10.Epitope_tags.AllCell mm9 TFs and others Epitope tags Digestive tract SRX...365692 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.10.Epitope_tags.AllCell.bed ...

  7. File list: Oth.Dig.20.Epitope_tags.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.20.Epitope_tags.AllCell mm9 TFs and others Epitope tags Digestive tract SRX...365692 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.20.Epitope_tags.AllCell.bed ...

  8. File list: Oth.Dig.05.TEAD4.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.05.TEAD4.AllCell hg19 TFs and others TEAD4 Digestive tract SRX190228,SRX243...627,SRX243629,SRX360042 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.05.TEAD4.AllCell.bed ...

  9. File list: NoD.Dig.05.AllAg.Intestinal_crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.05.AllAg.Intestinal_crypt mm9 No description Digestive tract Intestinal cry...pt http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/NoD.Dig.05.AllAg.Intestinal_crypt.bed ...

  10. File list: Pol.Dig.50.RNA_polymerase_II.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.50.RNA_polymerase_II.AllCell hg19 RNA polymerase RNA polymerase II Digestiv...//dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Pol.Dig.50.RNA_polymerase_II.AllCell.bed ...

  11. File list: Pol.Dig.05.RNA_Polymerase_II.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.05.RNA_Polymerase_II.AllCell mm9 RNA polymerase RNA Polymerase II Digestive... tract SRX112957,SRX143802 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.05.RNA_Polymerase_II.AllCell.bed ...

  12. File list: ALL.Dig.50.AllAg.Gastric_tumor [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.50.AllAg.Gastric_tumor mm9 All antigens Digestive tract Gastric tumor SRX31...5102,SRX315096,SRX315100,SRX315094,SRX315095,SRX315101 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Dig.50.AllAg.Gastric_tumor.bed ...

  13. File list: Oth.Dig.20.AllAg.Gastric_tumor [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.20.AllAg.Gastric_tumor mm9 TFs and others Digestive tract Gastric tumor SRX...315102,SRX315096,SRX315100,SRX315094,SRX315095,SRX315101 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.20.AllAg.Gastric_tumor.bed ...

  14. File list: ALL.Dig.05.AllAg.Gastric_tumor [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.05.AllAg.Gastric_tumor mm9 All antigens Digestive tract Gastric tumor SRX31...5102,SRX315095,SRX315094,SRX315096,SRX315101,SRX315100 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Dig.05.AllAg.Gastric_tumor.bed ...

  15. File list: His.Dig.50.AllAg.AGS [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.50.AllAg.AGS hg19 Histone Digestive tract AGS SRX482979,SRX482980,SRX482982...,SRX482978,SRX482983,SRX482985,SRX482981,SRX482984 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Dig.50.AllAg.AGS.bed ...

  16. File list: Oth.Dig.20.AllAg.AGS [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.20.AllAg.AGS hg19 TFs and others Digestive tract AGS SRX367641,SRX371981,SR...X367642,SRX367640 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.20.AllAg.AGS.bed ...

  17. File list: Oth.Dig.10.AllAg.AGS [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.10.AllAg.AGS hg19 TFs and others Digestive tract AGS SRX367641,SRX367642,SR...X371981,SRX367640 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.10.AllAg.AGS.bed ...

  18. File list: ALL.Dig.05.AllAg.AGS [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.05.AllAg.AGS hg19 All antigens Digestive tract AGS SRX367641,SRX367642,SRX3...X482983 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.05.AllAg.AGS.bed ...

  19. File list: His.Dig.05.AllAg.AGS [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.05.AllAg.AGS hg19 Histone Digestive tract AGS SRX482980,SRX482979,SRX482981...,SRX482978,SRX482984,SRX482982,SRX482985,SRX482983 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Dig.05.AllAg.AGS.bed ...

  20. File list: ALL.Dig.10.AllAg.AGS [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.10.AllAg.AGS hg19 All antigens Digestive tract AGS SRX367641,SRX367642,SRX3...X482983 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.10.AllAg.AGS.bed ...

  1. File list: His.Dig.20.AllAg.AGS [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.20.AllAg.AGS hg19 Histone Digestive tract AGS SRX482980,SRX482979,SRX482981...,SRX482978,SRX482982,SRX482983,SRX482985,SRX482984 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Dig.20.AllAg.AGS.bed ...

  2. File list: Oth.Dig.05.AllAg.AGS [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.05.AllAg.AGS hg19 TFs and others Digestive tract AGS SRX367641,SRX367642,SR...X371981,SRX367640 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.05.AllAg.AGS.bed ...

  3. File list: Oth.Dig.50.AllAg.AGS [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.50.AllAg.AGS hg19 TFs and others Digestive tract AGS SRX367641,SRX371981,SR...X367642,SRX367640 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.50.AllAg.AGS.bed ...

  4. File list: ALL.Dig.50.AllAg.AGS [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.50.AllAg.AGS hg19 All antigens Digestive tract AGS SRX367641,SRX371982,SRX3...X367640 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.50.AllAg.AGS.bed ...

  5. File list: ALL.Dig.20.AllAg.AGS [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.20.AllAg.AGS hg19 All antigens Digestive tract AGS SRX367641,SRX371982,SRX3...X367640 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.20.AllAg.AGS.bed ...

  6. File list: His.Dig.10.AllAg.AGS [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.10.AllAg.AGS hg19 Histone Digestive tract AGS SRX482979,SRX482980,SRX482981...,SRX482984,SRX482978,SRX482982,SRX482985,SRX482983 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Dig.10.AllAg.AGS.bed ...

  7. File list: Oth.Dig.50.VSV-G.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  8. File list: Oth.Dig.20.VSV-G.AllCell [Chip-atlas[Archive

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  9. File list: Oth.Dig.05.VSV-G.AllCell [Chip-atlas[Archive

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  10. File list: Oth.Dig.10.VSV-G.AllCell [Chip-atlas[Archive

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  11. File list: Oth.Dig.10.Vdr.AllCell [Chip-atlas[Archive

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  12. File list: Oth.Dig.05.Vdr.AllCell [Chip-atlas[Archive

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  13. File list: Oth.Dig.20.Vdr.AllCell [Chip-atlas[Archive

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  14. File list: InP.Dig.05.Input_control.AllCell [Chip-atlas[Archive

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  15. File list: InP.Dig.05.Input_control.AllCell [Chip-atlas[Archive

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  16. File list: InP.Dig.50.Input_control.AllCell [Chip-atlas[Archive

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  17. File list: InP.Dig.20.Input_control.AllCell [Chip-atlas[Archive

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  18. File list: InP.Dig.10.Input_control.AllCell [Chip-atlas[Archive

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  19. File list: InP.Dig.05.AllAg.Intestine,_Small [Chip-atlas[Archive

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  20. File list: InP.Dig.10.AllAg.Intestine,_Small [Chip-atlas[Archive

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  1. File list: DNS.Dig.10.AllAg.Intestine,_Small [Chip-atlas[Archive

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  2. File list: InP.Dig.10.AllAg.Intestine,_Small [Chip-atlas[Archive

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  3. File list: NoD.Dig.05.AllAg.Intestine,_Small [Chip-atlas[Archive

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  4. File list: DNS.Dig.50.AllAg.Intestine,_Small [Chip-atlas[Archive

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  5. File list: NoD.Dig.20.AllAg.Intestine,_Small [Chip-atlas[Archive

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  6. File list: Oth.Dig.50.AllAg.Intestine,_Small [Chip-atlas[Archive

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  7. File list: Oth.Dig.10.AllAg.Intestine,_Small [Chip-atlas[Archive

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  8. File list: ALL.Dig.50.AllAg.Intestine,_Small [Chip-atlas[Archive

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  9. File list: InP.Dig.05.AllAg.Intestine,_Small [Chip-atlas[Archive

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  10. File list: ALL.Dig.10.AllAg.Intestine,_Small [Chip-atlas[Archive

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  11. File list: DNS.Dig.20.AllAg.Intestine,_Small [Chip-atlas[Archive

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  12. File list: NoD.Dig.05.AllAg.Intestine,_Small [Chip-atlas[Archive

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  13. File list: InP.Dig.50.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  14. File list: InP.Dig.50.AllAg.Intestine,_Small [Chip-atlas[Archive

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  15. File list: NoD.Dig.10.AllAg.Intestine,_Small [Chip-atlas[Archive

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  16. File list: DNS.Dig.05.AllAg.Intestine,_Small [Chip-atlas[Archive

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  17. File list: Oth.Dig.20.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  18. File list: Oth.Dig.20.AllAg.Intestine,_Small [Chip-atlas[Archive

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  19. File list: Oth.Dig.05.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  20. File list: Oth.Dig.05.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  1. File list: DNS.Dig.10.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  2. File list: InP.Dig.20.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  3. File list: ALL.Dig.10.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  4. File list: NoD.Dig.50.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  5. File list: ALL.Dig.20.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  6. File list: Oth.Dig.50.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  7. File list: DNS.Dig.20.AllAg.Intestine,_Small [Chip-atlas[Archive

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  8. File list: ALL.Dig.20.AllAg.Intestine,_Small [Chip-atlas[Archive

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  9. File list: InP.Dig.20.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  10. File list: NoD.Dig.20.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  11. File list: NoD.Dig.50.AllAg.Intestine,_Small [Chip-atlas[Archive

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  12. File list: Unc.Dig.10.AllAg.Intestinal_villus [Chip-atlas[Archive

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  13. File list: Oth.Dig.50.AllAg.Intestinal_villus [Chip-atlas[Archive

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  14. File list: ALL.Dig.05.AllAg.Intestinal_villus [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  15. File list: Unc.Dig.50.AllAg.Intestinal_villus [Chip-atlas[Archive

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  16. File list: Pol.Dig.05.RNA_Polymerase_III.AllCell [Chip-atlas[Archive

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  17. File list: ALL.Dig.20.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

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  18. File list: Pol.Dig.50.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

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  19. File list: Pol.Dig.10.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  20. File list: His.Dig.20.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  1. File list: DNS.Dig.20.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  2. File list: ALL.Dig.10.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  3. File list: Unc.Dig.10.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  4. File list: ALL.Dig.05.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  5. File list: DNS.Dig.10.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  6. File list: Unc.Dig.05.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  7. File list: Oth.Dig.05.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  8. File list: Unc.Dig.20.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  9. File list: His.Dig.50.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.50.AllAg.Intestinal_stem_cells mm9 Histone Digestive tract Intestinal stem ...cells SRX856959,SRX193722 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/His.Dig.50.AllAg.Intestinal_stem_cells.bed ...

  10. File list: His.Dig.10.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.10.AllAg.Intestinal_stem_cells mm9 Histone Digestive tract Intestinal stem ...cells SRX856959,SRX193722 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/His.Dig.10.AllAg.Intestinal_stem_cells.bed ...

  11. File list: ALL.Dig.05.AllAg.TPERIODT [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.05.AllAg.TPERIODT hg19 All antigens Digestive tract T.T SRX277135,SRX277133...,SRX277134 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.05.AllAg.TPERIODT.bed ...

  12. File list: InP.Dig.20.Input_control.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.20.Input_control.AllCell mm9 Input control Input control Digestive tract SR...X040284,SRX376981,SRX376973 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Dig.20.Input_control.AllCell.bed ...

  13. File list: DNS.Dig.50.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.50.AllAg.Intestinal_stem_cells mm9 DNase-seq Digestive tract Intestinal ste...m cells http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/DNS.Dig.50.AllAg.Intestinal_stem_cells.bed ...

  14. File list: Oth.Dig.20.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.20.AllAg.Intestinal_stem_cells mm9 TFs and others Digestive tract Intestinal... stem cells SRX856961,SRX1141904,SRX1141903 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.20.AllAg.Intestinal_stem_cells.bed ...

  15. File list: Oth.Dig.10.AllAg.Intestinal_villus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.10.AllAg.Intestinal_villus mm9 TFs and others Digestive tract Intestinal vi...X871677 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.10.AllAg.Intestinal_villus.bed ...

  16. File list: Pol.Dig.20.AllAg.Intestinal_villus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.20.AllAg.Intestinal_villus mm9 RNA polymerase Digestive tract Intestinal vi...llus http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.20.AllAg.Intestinal_villus.bed ...

  17. File list: ALL.Dig.50.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.50.AllAg.Intestinal_stem_cells mm9 All antigens Digestive tract Intestinal ...p://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Dig.50.AllAg.Intestinal_stem_cells.bed ...

  18. File list: DNS.Dig.50.AllAg.Intestinal_crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.50.AllAg.Intestinal_crypt mm9 DNase-seq Digestive tract Intestinal crypt ht...tp://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/DNS.Dig.50.AllAg.Intestinal_crypt.bed ...

  19. File list: Pol.Dig.05.AllAg.Intestinal_villus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.05.AllAg.Intestinal_villus mm9 RNA polymerase Digestive tract Intestinal vi...llus http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.05.AllAg.Intestinal_villus.bed ...

  20. File list: NoD.Dig.10.AllAg.Intestinal_crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.10.AllAg.Intestinal_crypt mm9 No description Digestive tract Intestinal cry...pt http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/NoD.Dig.10.AllAg.Intestinal_crypt.bed ...

  1. File list: Pol.Dig.05.AllAg.Intestinal_crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.05.AllAg.Intestinal_crypt mm9 RNA polymerase Digestive tract Intestinal cry...pt http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.05.AllAg.Intestinal_crypt.bed ...

  2. File list: Pol.Dig.20.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.20.AllAg.Intestinal_adenoma mm9 RNA polymerase Digestive tract Intestinal a...denoma http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.20.AllAg.Intestinal_adenoma.bed ...

  3. File list: ALL.Dig.50.AllAg.Intestinal_villus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.50.AllAg.Intestinal_villus mm9 All antigens Digestive tract Intestinal vill...RX1141900,SRX365695,SRX193725,SRX193724 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Dig.50.AllAg.Intestinal_villus.bed ...

  4. File list: Unc.Dig.10.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Dig.10.AllAg.Intestinal_adenoma mm9 Unclassified Digestive tract Intestinal ade...noma SRX648717 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Unc.Dig.10.AllAg.Intestinal_adenoma.bed ...

  5. File list: ALL.Dig.10.AllAg.Intestinal_crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.10.AllAg.Intestinal_crypt mm9 All antigens Digestive tract Intestinal crypt... SRX871676,SRX871671,SRX871675,SRX871672 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Dig.10.AllAg.Intestinal_crypt.bed ...

  6. File list: ALL.Dig.10.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.10.AllAg.Intestinal_adenoma mm9 All antigens Digestive tract Intestinal ade...noma SRX648718,SRX648717 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Dig.10.AllAg.Intestinal_adenoma.bed ...

  7. File list: Unc.Dig.05.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Dig.05.AllAg.Intestinal_adenoma mm9 Unclassified Digestive tract Intestinal ade...noma SRX648717 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Unc.Dig.05.AllAg.Intestinal_adenoma.bed ...

  8. File list: NoD.Dig.20.AllAg.Intestinal_crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.20.AllAg.Intestinal_crypt mm9 No description Digestive tract Intestinal cry...pt http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/NoD.Dig.20.AllAg.Intestinal_crypt.bed ...

  9. File list: Unc.Dig.20.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Dig.20.AllAg.Intestinal_adenoma mm9 Unclassified Digestive tract Intestinal ade...noma SRX648717 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Unc.Dig.20.AllAg.Intestinal_adenoma.bed ...

  10. File list: Pol.Dig.20.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.20.AllAg.Intestinal_stem_cells mm9 RNA polymerase Digestive tract Intestinal... stem cells http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.20.AllAg.Intestinal_stem_cells.bed ...

  11. File list: Pol.Dig.20.AllAg.Intestinal_crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.20.AllAg.Intestinal_crypt mm9 RNA polymerase Digestive tract Intestinal cry...pt http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.20.AllAg.Intestinal_crypt.bed ...

  12. File list: ALL.Dig.50.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.50.AllAg.Intestinal_adenoma mm9 All antigens Digestive tract Intestinal ade...noma SRX648718,SRX648717 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Dig.50.AllAg.Intestinal_adenoma.bed ...

  13. File list: InP.Dig.10.AllAg.Intestinal_villus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.10.AllAg.Intestinal_villus mm9 Input control Digestive tract Intestinal vil...lus SRX1141901,SRX028556,SRX112512,SRX193725 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Dig.10.AllAg.Intestinal_villus.bed ...

  14. File list: InP.Dig.10.AllAg.Intestinal_crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.10.AllAg.Intestinal_crypt mm9 Input control Digestive tract Intestinal cryp...t http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Dig.10.AllAg.Intestinal_crypt.bed ...

  15. File list: His.Dig.05.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.05.AllAg.Intestinal_stem_cells mm9 Histone Digestive tract Intestinal stem ...cells SRX856959,SRX193722 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/His.Dig.05.AllAg.Intestinal_stem_cells.bed ...

  16. File list: NoD.Dig.05.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.05.AllAg.Intestinal_adenoma mm9 No description Digestive tract Intestinal a...denoma http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/NoD.Dig.05.AllAg.Intestinal_adenoma.bed ...

  17. File list: Pol.Dig.50.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.50.AllAg.Intestinal_adenoma mm9 RNA polymerase Digestive tract Intestinal a...denoma http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.50.AllAg.Intestinal_adenoma.bed ...

  18. File list: Oth.Dig.05.AllAg.Intestinal_crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.05.AllAg.Intestinal_crypt mm9 TFs and others Digestive tract Intestinal cry...pt SRX871676,SRX871675,SRX871671,SRX871672 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.05.AllAg.Intestinal_crypt.bed ...

  19. File list: Unc.Dig.05.AllAg.Intestinal_villus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Dig.05.AllAg.Intestinal_villus mm9 Unclassified Digestive tract Intestinal vill...us SRX365695 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Unc.Dig.05.AllAg.Intestinal_villus.bed ...

  20. File list: DNS.Dig.05.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.05.AllAg.Intestinal_stem_cells mm9 DNase-seq Digestive tract Intestinal ste...m cells http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/DNS.Dig.05.AllAg.Intestinal_stem_cells.bed ...

  1. File list: ALL.Dig.10.AllAg.Intestinal_villus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.10.AllAg.Intestinal_villus mm9 All antigens Digestive tract Intestinal vill...RX193725,SRX365695,SRX1141900,SRX193724 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Dig.10.AllAg.Intestinal_villus.bed ...

  2. File list: Pol.Dig.05.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.05.AllAg.Intestinal_adenoma mm9 RNA polymerase Digestive tract Intestinal a...denoma http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.05.AllAg.Intestinal_adenoma.bed ...

  3. File list: InP.Dig.05.AllAg.Intestinal_crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.05.AllAg.Intestinal_crypt mm9 Input control Digestive tract Intestinal cryp...t http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Dig.05.AllAg.Intestinal_crypt.bed ...

  4. File list: InP.Dig.50.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.50.AllAg.Intestinal_adenoma mm9 Input control Digestive tract Intestinal ad...enoma http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Dig.50.AllAg.Intestinal_adenoma.bed ...

  5. File list: Oth.Dig.50.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.50.AllAg.Intestinal_stem_cells mm9 TFs and others Digestive tract Intestinal... stem cells SRX856961,SRX1141904,SRX1141903 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.50.AllAg.Intestinal_stem_cells.bed ...

  6. File list: ALL.Dig.20.AllAg.Intestinal_crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.20.AllAg.Intestinal_crypt mm9 All antigens Digestive tract Intestinal crypt... SRX871676,SRX871672,SRX871675,SRX871671 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Dig.20.AllAg.Intestinal_crypt.bed ...

  7. File list: Pol.Dig.10.AllAg.Intestinal_crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.10.AllAg.Intestinal_crypt mm9 RNA polymerase Digestive tract Intestinal cry...pt http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.10.AllAg.Intestinal_crypt.bed ...

  8. File list: Oth.Dig.05.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.05.AllAg.Intestinal_adenoma mm9 TFs and others Digestive tract Intestinal a...denoma SRX648718 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.05.AllAg.Intestinal_adenoma.bed ...

  9. File list: DNS.Dig.50.AllAg.Intestinal_villus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.50.AllAg.Intestinal_villus mm9 DNase-seq Digestive tract Intestinal villus ...http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/DNS.Dig.50.AllAg.Intestinal_villus.bed ...

  10. File list: NoD.Dig.20.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.20.AllAg.Intestinal_adenoma mm9 No description Digestive tract Intestinal a...denoma http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/NoD.Dig.20.AllAg.Intestinal_adenoma.bed ...

  11. File list: InP.Dig.20.AllAg.Intestinal_villus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.20.AllAg.Intestinal_villus mm9 Input control Digestive tract Intestinal vil...lus SRX112512,SRX028556,SRX1141901,SRX193725 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Dig.20.AllAg.Intestinal_villus.bed ...

  12. File list: Oth.Dig.20.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.20.AllAg.Intestinal_adenoma mm9 TFs and others Digestive tract Intestinal a...denoma SRX648718 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.20.AllAg.Intestinal_adenoma.bed ...

  13. File list: InP.Dig.10.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.10.AllAg.Intestinal_adenoma mm9 Input control Digestive tract Intestinal ad...enoma http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Dig.10.AllAg.Intestinal_adenoma.bed ...

  14. File list: Pol.Dig.05.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.05.AllAg.Intestinal_stem_cells mm9 RNA polymerase Digestive tract Intestinal... stem cells http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.05.AllAg.Intestinal_stem_cells.bed ...

  15. File list: Unc.Dig.50.AllAg.Intestinal_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Dig.50.AllAg.Intestinal_stem_cells mm9 Unclassified Digestive tract Intestinal ...stem cells http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Unc.Dig.50.AllAg.Intestinal_stem_cells.bed ...

  16. File list: NoD.Dig.50.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.50.AllAg.Intestinal_adenoma mm9 No description Digestive tract Intestinal a...denoma http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/NoD.Dig.50.AllAg.Intestinal_adenoma.bed ...

  17. File list: DNS.Dig.05.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.05.AllAg.Intestine,_Small hg19 DNase-seq Digestive tract Intestine, Small S...,SRX201814,SRX055194,SRX100957,SRX201835,SRX252605 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/DNS.Dig.05.AllAg.Intestine,_Small.bed ...

  18. File list: Pol.Dig.05.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.05.AllAg.Intestines mm9 RNA polymerase Digestive tract Intestines SRX112957...,SRX143802 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.05.AllAg.Intestines.bed ...

  19. File list: Pol.Dig.10.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.10.AllAg.Intestines mm9 RNA polymerase Digestive tract Intestines SRX112957...,SRX143802 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.10.AllAg.Intestines.bed ...

  20. File list: ALL.Dig.50.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.50.AllAg.Intestine,_Small hg19 All antigens Digestive tract Intestine, Smal...2119,SRX263903,SRX263906,SRX136956,SRX213497,SRX347272 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.50.AllAg.Intestine,_Small.bed ...

  1. File list: Pol.Dig.10.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.10.AllAg.Intestinal_adenoma mm9 RNA polymerase Digestive tract Intestinal a...denoma http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.10.AllAg.Intestinal_adenoma.bed ...

  2. File list: Oth.Dig.20.AllAg.Intestinal_villus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.20.AllAg.Intestinal_villus mm9 TFs and others Digestive tract Intestinal vi...X112502 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.20.AllAg.Intestinal_villus.bed ...

  3. File list: Pol.Dig.50.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.50.AllAg.Intestines mm9 RNA polymerase Digestive tract Intestines SRX112957...,SRX143802 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.50.AllAg.Intestines.bed ...

  4. File list: Oth.Dig.20.AllAg.Intestinal_crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.20.AllAg.Intestinal_crypt mm9 TFs and others Digestive tract Intestinal cry...pt SRX871676,SRX871672,SRX871675,SRX871671 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.20.AllAg.Intestinal_crypt.bed ...

  5. File list: Unc.Dig.10.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Dig.10.AllAg.Intestines mm9 Unclassified Digestive tract Intestines SRX112954,S...RX341757,SRX341758 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Unc.Dig.10.AllAg.Intestines.bed ...

  6. File list: Oth.Dig.10.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.10.AllAg.Intestines mm9 TFs and others Digestive tract Intestines SRX143801...,SRX1431656 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.10.AllAg.Intestines.bed ...

  7. File list: InP.Dig.50.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.50.AllAg.Intestines mm9 Input control Digestive tract Intestines ERX040294,...06,ERX040282,ERX040311,ERX040301,ERX040310,ERX040313,ERX040297,ERX040304,ERX040284 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Dig.50.AllAg.Intestines.bed ...

  8. File list: Oth.Dig.05.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.05.AllAg.Intestines mm9 TFs and others Digestive tract Intestines SRX143801...,SRX1431656 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.05.AllAg.Intestines.bed ...

  9. File list: ALL.Dig.05.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.05.AllAg.Intestines mm9 All antigens Digestive tract Intestines ERX040305,E...40283,ERX040288,ERX040301,ERX040313,SRX1431657,SRX341758,ERX040293,ERX040284 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Dig.05.AllAg.Intestines.bed ...

  10. File list: InP.Dig.50.AllAg.Intestinal_crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.50.AllAg.Intestinal_crypt mm9 Input control Digestive tract Intestinal cryp...t http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Dig.50.AllAg.Intestinal_crypt.bed ...

  11. File list: InP.Dig.05.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.05.AllAg.Intestines mm9 Input control Digestive tract Intestines ERX040294,...0,ERX040282,ERX040304,ERX040288,ERX040301,ERX040313,SRX1431657,ERX040293,ERX040284 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Dig.05.AllAg.Intestines.bed ...

  12. File list: ALL.Dig.20.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.20.AllAg.Intestines mm9 All antigens Digestive tract Intestines SRX191044,S...185803,ERX040309,ERX040302,ERX040313,ERX040297,ERX040283,ERX040300,ERX040284 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Dig.20.AllAg.Intestines.bed ...

  13. File list: DNS.Dig.20.AllAg.Intestinal_villus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.20.AllAg.Intestinal_villus mm9 DNase-seq Digestive tract Intestinal villus ...http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/DNS.Dig.20.AllAg.Intestinal_villus.bed ...

  14. File list: DNS.Dig.50.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.50.AllAg.Intestinal_adenoma mm9 DNase-seq Digestive tract Intestinal adenom...a http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/DNS.Dig.50.AllAg.Intestinal_adenoma.bed ...

  15. File list: InP.Dig.20.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.20.AllAg.Intestinal_adenoma mm9 Input control Digestive tract Intestinal ad...enoma http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Dig.20.AllAg.Intestinal_adenoma.bed ...

  16. File list: Pol.Dig.20.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.20.AllAg.Intestines mm9 RNA polymerase Digestive tract Intestines SRX112957...,SRX143802 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.20.AllAg.Intestines.bed ...

  17. File list: NoD.Dig.10.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.10.AllAg.Intestine,_Small mm9 No description Digestive tract Intestine, Sma...ll http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/NoD.Dig.10.AllAg.Intestine,_Small.bed ...

  18. File list: Oth.Dig.50.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.50.AllAg.Intestinal_adenoma mm9 TFs and others Digestive tract Intestinal a...denoma SRX648718 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.50.AllAg.Intestinal_adenoma.bed ...

  19. File list: InP.Dig.05.AllAg.Intestinal_villus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.05.AllAg.Intestinal_villus mm9 Input control Digestive tract Intestinal vil...lus SRX1141901,SRX112512,SRX028556,SRX193725 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Dig.05.AllAg.Intestinal_villus.bed ...

  20. File list: DNS.Dig.05.AllAg.Intestinal_crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.05.AllAg.Intestinal_crypt mm9 DNase-seq Digestive tract Intestinal crypt ht...tp://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/DNS.Dig.05.AllAg.Intestinal_crypt.bed ...

  1. File list: Unc.Dig.50.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Dig.50.AllAg.Intestines mm9 Unclassified Digestive tract Intestines SRX112954,S...RX341758,SRX341757 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Unc.Dig.50.AllAg.Intestines.bed ...

  2. File list: ALL.Dig.05.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.05.AllAg.Intestine,_Small hg19 All antigens Digestive tract Intestine, Smal...3916,SRX263903,SRX213497,SRX347272,SRX142119,SRX263906 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.05.AllAg.Intestine,_Small.bed ...

  3. File list: Oth.Dig.50.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.50.AllAg.Intestines mm9 TFs and others Digestive tract Intestines SRX143801...,SRX1431656 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.50.AllAg.Intestines.bed ...

  4. File list: Oth.Dig.10.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.10.AllAg.Intestinal_adenoma mm9 TFs and others Digestive tract Intestinal a...denoma SRX648718 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.10.AllAg.Intestinal_adenoma.bed ...

  5. File list: Oth.Dig.10.AllAg.Intestine,_Small [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.10.AllAg.Intestine,_Small mm9 TFs and others Digestive tract Intestine, Sma...,SRX885790,SRX885798,SRX885799 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.10.AllAg.Intestine,_Small.bed ...

  6. File list: NoD.Dig.20.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.20.AllAg.Intestines mm9 No description Digestive tract Intestines ERX421334...,ERX421319,ERX421323,ERX421333,ERX421324,ERX421320,ERX421321,ERX421336,ERX421330 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/NoD.Dig.20.AllAg.Intestines.bed ...

  7. File list: DNS.Dig.10.AllAg.Intestinal_adenoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.10.AllAg.Intestinal_adenoma mm9 DNase-seq Digestive tract Intestinal adenom...a http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/DNS.Dig.10.AllAg.Intestinal_adenoma.bed ...

  8. File list: ALL.Dig.50.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.50.AllAg.Intestines mm9 All antigens Digestive tract Intestines SRX191044,S...040298,SRX341757,ERX040304,SRX185790,ERX040284,ERX040281,SRX112955,SRX185803 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Dig.50.AllAg.Intestines.bed ...

  9. File list: Oth.Dig.20.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.20.AllAg.Intestines mm9 TFs and others Digestive tract Intestines SRX143801...,SRX1431656 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Dig.20.AllAg.Intestines.bed ...

  10. File list: NoD.Dig.05.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.05.AllAg.Intestines mm9 No description Digestive tract Intestines ERX421330...,ERX421334,ERX421319,ERX421323,ERX421333,ERX421324,ERX421320,ERX421321,ERX421336 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/NoD.Dig.05.AllAg.Intestines.bed ...

  11. File list: NoD.Dig.05.AllAg.Intestinal_villus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.05.AllAg.Intestinal_villus mm9 No description Digestive tract Intestinal vi...llus http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/NoD.Dig.05.AllAg.Intestinal_villus.bed ...

  12. File list: Unc.Dig.05.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Dig.05.AllAg.Intestines mm9 Unclassified Digestive tract Intestines SRX112954,S...RX341757,SRX341758 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Unc.Dig.05.AllAg.Intestines.bed ...

  13. File list: Pol.Dig.50.AllAg.Intestinal_crypt [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.50.AllAg.Intestinal_crypt mm9 RNA polymerase Digestive tract Intestinal cry...pt http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Dig.50.AllAg.Intestinal_crypt.bed ...

  14. File list: NoD.Dig.50.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.50.AllAg.Intestines mm9 No description Digestive tract Intestines ERX421319...,ERX421334,ERX421333,ERX421323,ERX421324,ERX421320,ERX421321,ERX421336,ERX421330 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/NoD.Dig.50.AllAg.Intestines.bed ...

  15. File list: ALL.Dig.10.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.10.AllAg.Intestines mm9 All antigens Digestive tract Intestines ERX040305,S...40301,SRX1431657,ERX040282,SRX185790,ERX040313,ERX040304,ERX421330,ERX040284 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Dig.10.AllAg.Intestines.bed ...

  16. File list: NoD.Dig.20.AllAg.Intestinal_villus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.20.AllAg.Intestinal_villus mm9 No description Digestive tract Intestinal vi...llus http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/NoD.Dig.20.AllAg.Intestinal_villus.bed ...

  17. File list: InP.Dig.20.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.20.AllAg.Intestines mm9 Input control Digestive tract Intestines ERX040294,...57,ERX040282,ERX040311,ERX040306,ERX040301,ERX040310,ERX040313,ERX040297,ERX040284 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Dig.20.AllAg.Intestines.bed ...

  18. File list: InP.Dig.10.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.10.AllAg.Intestines mm9 Input control Digestive tract Intestines ERX040308,...9,ERX040286,ERX040293,ERX040301,SRX1431657,ERX040282,ERX040313,ERX040304,ERX040284 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Dig.10.AllAg.Intestines.bed ...

  19. File list: NoD.Dig.10.AllAg.Intestines [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.10.AllAg.Intestines mm9 No description Digestive tract Intestines ERX421334...,ERX421319,ERX421333,ERX421323,ERX421324,ERX421320,ERX421321,ERX421336,ERX421330 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/NoD.Dig.10.AllAg.Intestines.bed ...

  20. File list: DNS.Dig.50.AllAg.Colon [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.50.AllAg.Colon hg19 DNase-seq Digestive tract Colon SRX089252,SRX100958,SRX...RX089272,SRX055159,SRX055154 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/DNS.Dig.50.AllAg.Colon.bed ...

  1. File list: DNS.Dig.10.AllAg.LoVo [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Dig.10.AllAg.LoVo hg19 DNase-seq Digestive tract LoVo ERX306455,ERX306454,ERX30...6458,ERX306459,ERX306456,ERX306457 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/DNS.Dig.10.AllAg.LoVo.bed ...

  2. File list: Oth.Dig.05.NIPBL.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.05.NIPBL.AllCell hg19 TFs and others NIPBL Digestive tract SRX360591,SRX360...577 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.05.NIPBL.AllCell.bed ...

  3. File list: Oth.Dig.20.NIPBL.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.20.NIPBL.AllCell hg19 TFs and others NIPBL Digestive tract SRX360591,SRX360...577 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.20.NIPBL.AllCell.bed ...

  4. File list: Oth.Dig.05.AllAg.DLD-1 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.05.AllAg.DLD-1 hg19 TFs and others Digestive tract DLD-1 SRX396835,SRX39683...9,SRX088971,SRX396838,SRX396834,SRX396840,SRX396836,SRX088972,SRX278416 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.05.AllAg.DLD-1.bed ...

  5. File list: InP.Dig.10.AllAg.DLD-1 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.10.AllAg.DLD-1 hg19 Input control Digestive tract DLD-1 SRX396833,SRX396837...,SRX088973 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Dig.10.AllAg.DLD-1.bed ...

  6. File list: Oth.Dig.50.AllAg.DLD-1 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.50.AllAg.DLD-1 hg19 TFs and others Digestive tract DLD-1 SRX278416,SRX08897...2,SRX088971,SRX396836,SRX396835,SRX396834,SRX396840,SRX396838,SRX396839 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.50.AllAg.DLD-1.bed ...

  7. File list: ALL.Dig.05.AllAg.DLD-1 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.05.AllAg.DLD-1 hg19 All antigens Digestive tract DLD-1 SRX347195,SRX347197,...6,SRX088972,SRX278416,SRX347193 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.05.AllAg.DLD-1.bed ...

  8. File list: ALL.Dig.50.AllAg.DLD-1 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.50.AllAg.DLD-1 hg19 All antigens Digestive tract DLD-1 SRX347196,SRX278416,...8,SRX396839,SRX347197,SRX347193 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.50.AllAg.DLD-1.bed ...

  9. File list: Oth.Dig.10.AllAg.DLD-1 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.10.AllAg.DLD-1 hg19 TFs and others Digestive tract DLD-1 SRX396835,SRX39683...9,SRX396834,SRX396838,SRX396840,SRX396836,SRX088971,SRX278416,SRX088972 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.10.AllAg.DLD-1.bed ...

  10. File list: Oth.Dig.20.AllAg.DLD-1 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.20.AllAg.DLD-1 hg19 TFs and others Digestive tract DLD-1 SRX396834,SRX27841...6,SRX088972,SRX088971,SRX396836,SRX396835,SRX396840,SRX396838,SRX396839 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.20.AllAg.DLD-1.bed ...

  11. File list: ALL.Dig.20.AllAg.DLD-1 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.20.AllAg.DLD-1 hg19 All antigens Digestive tract DLD-1 SRX347196,SRX347195,...0,SRX396838,SRX396839,SRX347193 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.20.AllAg.DLD-1.bed ...

  12. File list: ALL.Dig.10.AllAg.DLD-1 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Dig.10.AllAg.DLD-1 hg19 All antigens Digestive tract DLD-1 SRX347195,SRX347196,...1,SRX278416,SRX088972,SRX347193 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Dig.10.AllAg.DLD-1.bed ...

  13. File list: InP.Dig.20.AllAg.DLD-1 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.20.AllAg.DLD-1 hg19 Input control Digestive tract DLD-1 SRX396833,SRX396837...,SRX088973 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Dig.20.AllAg.DLD-1.bed ...

  14. File list: His.Dig.05.AllAg.DLD-1 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.05.AllAg.DLD-1 hg19 Histone Digestive tract DLD-1 SRX347195,SRX347197,SRX34...7196,SRX347193 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Dig.05.AllAg.DLD-1.bed ...

  15. File list: InP.Dig.05.AllAg.DLD-1 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.05.AllAg.DLD-1 hg19 Input control Digestive tract DLD-1 SRX396833,SRX396837...,SRX088973 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Dig.05.AllAg.DLD-1.bed ...

  16. File list: His.Dig.10.AllAg.DLD-1 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.10.AllAg.DLD-1 hg19 Histone Digestive tract DLD-1 SRX347195,SRX347196,SRX34...7197,SRX347193 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Dig.10.AllAg.DLD-1.bed ...

  17. File list: InP.Dig.50.AllAg.DLD-1 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Dig.50.AllAg.DLD-1 hg19 Input control Digestive tract DLD-1 SRX088973,SRX396837...,SRX396833 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Dig.50.AllAg.DLD-1.bed ...

  18. File list: His.Dig.20.AllAg.DLD-1 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Dig.20.AllAg.DLD-1 hg19 Histone Digestive tract DLD-1 SRX347196,SRX347195,SRX34...7197,SRX347193 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Dig.20.AllAg.DLD-1.bed ...

  19. File list: Oth.Dig.10.MethylCap.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.10.MethylCap.AllCell hg19 TFs and others MethylCap Digestive tract SRX10526...1,SRX105262,SRX105260 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.10.MethylCap.AllCell.bed ...

  20. File list: Oth.Dig.20.MethylCap.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.20.MethylCap.AllCell hg19 TFs and others MethylCap Digestive tract SRX10526...1,SRX105262,SRX105260 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.20.MethylCap.AllCell.bed ...

  1. File list: Oth.Dig.50.MethylCap.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.50.MethylCap.AllCell hg19 TFs and others MethylCap Digestive tract SRX10526...1,SRX105262,SRX105260 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.50.MethylCap.AllCell.bed ...

  2. File list: Oth.Dig.05.MethylCap.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.05.MethylCap.AllCell hg19 TFs and others MethylCap Digestive tract SRX10526...1,SRX105262,SRX105260 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.05.MethylCap.AllCell.bed ...

  3. File list: NoD.Dig.20.AllAg.Esophagus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.20.AllAg.Esophagus hg19 No description Digestive tract Esophagus SRX190764,...0 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Dig.20.AllAg.Esophagus.bed ...

  4. File list: NoD.Dig.10.AllAg.Esophagus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.10.AllAg.Esophagus hg19 No description Digestive tract Esophagus SRX136969,...0 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Dig.10.AllAg.Esophagus.bed ...

  5. File list: NoD.Dig.05.AllAg.Esophagus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.05.AllAg.Esophagus hg19 No description Digestive tract Esophagus SRX134731,...5 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Dig.05.AllAg.Esophagus.bed ...

  6. File list: NoD.Dig.50.AllAg.Esophagus [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Dig.50.AllAg.Esophagus hg19 No description Digestive tract Esophagus SRX190764,...0 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Dig.50.AllAg.Esophagus.bed ...

  7. File list: Pol.Dig.10.RNA_polymerase_II.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Dig.10.RNA_polymerase_II.AllCell hg19 RNA polymerase RNA polymerase II Digestiv...//dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Pol.Dig.10.RNA_polymerase_II.AllCell.bed ...

  8. The Asteroid Redirect Mission (ARM)

    Science.gov (United States)

    Abell, Paul; Gates, Michele; Johnson, Lindley; Chodas, Paul; Mazanek, Dan; Reeves, David; Ticker, Ronald

    2016-07-01

    To achieve its long-term goal of sending humans to Mars, the National Aeronautics and Space Administration (NASA) plans to proceed in a series of incrementally more complex human spaceflight missions. Today, human flight experience extends only to Low-Earth Orbit (LEO), and should problems arise during a mission, the crew can return to Earth in a matter of minutes to hours. The next logical step for human spaceflight is to gain flight experience in the vicinity of the Moon. These cis-lunar missions provide a "proving ground" for the testing of systems and operations while still accommodating an emergency return path to the Earth that would last only several days. Cis-lunar mission experience will be essential for more ambitious human missions beyond the Earth-Moon system, which will require weeks, months, or even years of transit time. In addition, NASA has been given a Grand Challenge to find all asteroid threats to human populations and know what to do about them. Obtaining knowledge of asteroid physical properties combined with performing technology demonstrations for planetary defense provide much needed information to address the issue of future asteroid impacts on Earth. Hence the combined objectives of human exploration and planetary defense give a rationale for the Asteroid Re-direct Mission (ARM). Mission Description: NASA's ARM consists of two mission segments: 1) the Asteroid Redirect Robotic Mission (ARRM), the first robotic mission to visit a large (greater than ~100 m diameter) near-Earth asteroid (NEA), collect a multi-ton boulder from its surface along with regolith samples, demonstrate a planetary defense technique, and return the asteroidal material to a stable orbit around the Moon; and 2) the Asteroid Redirect Crewed Mission (ARCM), in which astronauts will take the Orion capsule to rendezvous and dock with the robotic vehicle, conduct multiple extravehicular activities to explore the boulder, and return to Earth with samples. NASA's proposed

  9. Asteroid magnitudes, UBV colors, and IRAS albedos and diameters

    Science.gov (United States)

    Tedesco, Edward F.

    1989-01-01

    This paper lists absolute magnitudes and slope parameters for known asteroids numbered through 3318. The values presented are those used in reducing asteroid IR flux data obtained with the IRAS. U-B colors are given for 938 asteroids, and B-V colors are given for 945 asteroids. The IRAS albedos and diameters are tabulated for 1790 asteroids.

  10. Asteroid exploration and utilization: The Hawking explorer

    Science.gov (United States)

    Carlson, Alan; Date, Medha; Duarte, Manny; Erian, Neil; Gafka, George; Kappler, Peter; Patano, Scott; Perez, Martin; Ponce, Edgar; Radovich, Brian

    1991-01-01

    The Earth is nearing depletion of its natural resources at a time when human beings are rapidly expanding the frontiers of space. The resources which may exist on asteroids could have enormous potential for aiding and enhancing human space exploration as well as life on Earth. With the possibly limitless opportunities that exist, it is clear that asteroids are the next step for human existence in space. This report comprises the efforts of NEW WORLDS, Inc. to develop a comprehensive design for an asteroid exploration/sample return mission. This mission is a precursor to proof-of-concept missions that will investigate the validity of mining and materials processing on an asteroid. Project STONER (Systematic Transfer of Near Earth Resources) is based on two utilization scenarios: (1) moving an asteroid to an advantageous location for use by Earth; and (2) mining an asteroids and transporting raw materials back to Earth. The asteroid explorer/sample return mission is designed in the context of both scenarios and is the first phase of a long range plane for humans to utilize asteroid resources. The report concentrates specifically on the selection of the most promising asteroids for exploration and the development of an exploration scenario. Future utilization as well as subsystem requirements of an asteroid sample return probe are also addressed.

  11. Asteroids. Prospective energy and material resources

    Energy Technology Data Exchange (ETDEWEB)

    Badescu, Viorel (ed.) [Bucharest Polytechnic Univ. (Romania). Candida Oancea Institute

    2013-11-01

    Recent research on Prospective Energy and Material Resources on Asteroids. Carefully edited book dedicated to Asteroids prospective energy and material resources. Written by leading experts in the field. The Earth has limited material and energy resources while these resources in space are virtually unlimited. Further development of humanity will require going beyond our planet and exploring of extraterrestrial resources and sources of unlimited power. Thus far, all missions to asteroids have been motivated by scientific exploration. However, given recent advancements in various space technologies, mining asteroids for resources is becoming ever more feasible. A significant portion of asteroids value is derived from their location; the required resources do not need to be lifted at a great expense from the surface of the Earth. Resources derived from Asteroid not only can be brought back to Earth but could also be used to sustain human exploration of space and permanent settlements in space. This book investigates asteroids' prospective energy and material resources. It is a collection of topics related to asteroid exploration, and utilization. It presents past and future technologies and solutions to old problems that could become reality in our life time. The book therefore is a great source of condensed information for specialists involved in current and impending asteroid-related activities and a good starting point for space researchers, inventors, technologists and potential investors. Written for researchers, engineers, and businessmen interested in asteroids' exploration and exploitation.

  12. The Asteroid 1998 QE2

    Science.gov (United States)

    Vodniza, Alberto Q.; Pereira, M. R.; Arecibo Observatory Team; JPL Target Asteroids Team

    2013-10-01

    This big asteroid was at 5.8 millions of kilometers from the Earth on May 31 (2013) and it has a diameter of 2.7 km. The radar images obtained by JPL showed that the period of rotation around its axis is close to five hours. Hills. K (2013) reported that the period is of 5.281 +/- 0.002 hours. On June 4 the team of Goldstone-Arecibo found a period of 4.75 +/- 0.01 hours. We also contributed with the light and phase curves to estimate the period by means of the telescope (with red filter). The radar imagery (JPL and Arecibo) revealed that 1998 QE2 has a moon, and we captured a mutual event (eclipse). From our Observatory, located in Pasto-Colombia, we captured several pictures, videos and astrometry data during several days. Our data was published by the Minor Planet Center (MPC) and also appears at the web page of NEODyS. The pictures of the asteroid were captured with the following equipment: CGE PRO 1400 CELESTRON (f/11 Schmidt-Cassegrain Telescope) and STL-1001 SBIG camera. We obtained the light curve of the body. Astrometry was carried out, and we calculated the orbital elements. We obtained the following orbital parameters: eccentricity = 0.5692181, semi-major axis = 2.41104631 A.U, orbital inclination = 12.82771 deg, longitude of the ascending node = 250.16876 deg, argument of perihelion = 345.61328 deg, mean motion = 0.26326658 deg/d, perihelion distance = 1.03863508 A.U, aphelion distance = 3.78345755 A.U. The asteroid has an orbital period of 3.74 years The parameters were calculated based on 191 observations (2013 May: 17-24) with mean residual = 0.162 arcseconds. A video of the asteroid from our Observatory was published on the main page of the “SPACEWEATHER” web: http://www.spaceweather.com/archive.php?view=1&day=21&month=05&year=2013 Note: The autors would like to thank to: Dr. Alessondra Springmann (Arecibo Observatory), Dr. Petr Pravec (Czech Republic), Dr. Lance Benner (JPL), Dr. Carl Hergenrother (Target Asteroids Team), and Dr. Dolores Hill

  13. Asteroids prospective energy and material resources

    CERN Document Server

    2013-01-01

    The Earth has limited material and energy resources while these resources in space are virtually unlimited. Further development of humanity will require going beyond our planet and exploring of extraterrestrial resources and sources of unlimited power.   Thus far, all missions to asteroids have been motivated by scientific exploration. However, given recent advancements in various space technologies, mining asteroids for resources is becoming ever more feasible. A significant portion of asteroids value is derived from their location; the required resources do not need to be lifted at a great expense from the surface of the Earth.   Resources derived from Asteroid not only can be brought back to Earth but could also be used to sustain human exploration of space and permanent settlements in space.   This book investigates asteroids' prospective energy and material resources. It is a collection of topics related to asteroid exploration, and utilization. It presents past and future technologies and solutions t...

  14. Mining the Apollo and Amor asteroids

    Science.gov (United States)

    Oleary, B.

    1977-01-01

    Earth-approaching asteroids could provide raw materials for space manufacturing. For certain asteroids the total energy per unit mass for the transfer of asteroidal resources to a manufacturing site in high earth orbit is comparable to that for lunar materials. For logistical reasons the cost may be many times less. Optical studies suggest that these asteroids have compositions corresponding to those of carbonaceous and ordinary chondrites, with some containing large quantities of iron and nickel; other are thought to contain carbon, nitrogen, and hydrogen, elements that appear to be lacking on the moon. The prospect that several new candidate asteroids will be discovered over the next few years increases the likelihood that a variety of asteroidal resource materials can be retrieved on low-energy missions.

  15. Selecting asteroids for a targeted spectroscopic survey

    CERN Document Server

    Oszkiewicz, D A; Tomov, T; Birlan, M; Geier, S; Penttilä, A; Polińska, M

    2014-01-01

    Asteroid spectroscopy reflects surface mineralogy. There are few thousand asteroids whose surfaces have been observed spectrally. Determining the surface properties of those objects is important for many practical and scientific applications, such as for example developing impact deflection strategies or studying history and evolution of the Solar System and planet formation. The aim of this study is to develop a pre-selection method that can be utilized in searching for asteroids of any taxonomic complex. The method could then be utilized im multiple applications such as searching for the missing V-types or looking for primitive asteroids. We used the Bayes Naive Classifier combined with observations obtained in the course of the Sloan Digital Sky Survey and the Wide-field Infrared Survey Explorer surveys as well as a database of asteroid phase curves for asteroids with known taxonomic type. Using the new classification method we have selected a number of possible V-type candidates. Some of the candidates we...

  16. Eccentricity distribution in the main asteroid belt

    CERN Document Server

    Malhotra, Renu

    2016-01-01

    The observationally complete sample of the main belt asteroids now spans more than two orders of magnitude in size and numbers more than 64,000 (excluding collisional family members). We undertook an analysis of asteroids' eccentricities and their interpretation with simple physical models. We find that Plummer's (1916) conclusion that the asteroids' eccentricities follow a Rayleigh distribution holds for the osculating eccentricities of large asteroids, but the proper eccentricities deviate from a Rayleigh distribution: there is a deficit of eccentricities smaller than $\\sim0.1$ and an excess of larger eccentricities. We further find that the proper eccentricities do not depend significantly on asteroid size but have strong dependence on heliocentric distance: the outer asteroid belt follows a Rayleigh distribution, but the inner belt is strikingly different. Eccentricities in the inner belt can be modeled as a vector sum of a primordial eccentricity vector of random orientation and magnitude drawn from a Ra...

  17. A method to determine asteroid poles

    Science.gov (United States)

    Deangelis, G.

    1993-01-01

    The determination of spin axis and shape is well known to be of fundamental importance for studies about the rotational and physical properties of asteroids. In particular, knowledge that the pole coordinate distribution is random or not could indicate the probable non-Maxwellian distribution of asteroid spin axes, while the distribution in terms of size and shape could place important constraints on the theories about the collisional history of some individual asteroids, of asteroid families, and of the asteroid population as a whole. Many kinds of methods have been developed to determine pole coordinates. An EA method is presented, from which it is possible to obtain the solution with no trial poles, but with a simultaneous least square fit on both the E and A part. Results for rotational and shape parameters were obtained for 18 asteroids: the values of the obtained parameters are generally in close agreement with those of others.

  18. Anchoring a lander on an asteroid using foam stabilization Project

    Data.gov (United States)

    National Aeronautics and Space Administration — NASA has proposed several missions to land a craft on an asteroid and potentially to return samples from it. While large asteroids in the asteroid belt can exhibit a...

  19. 78 FR 51750 - NASA Asteroid Initiative Idea Synthesis Workshop

    Science.gov (United States)

    2013-08-21

    ... SPACE ADMINISTRATION NASA Asteroid Initiative Idea Synthesis Workshop AGENCY: National Aeronautics and... for the agency's Asteroid Initiative. SUMMARY: The National Aeronautics and Space Administration announces a public conference to provide a status on the Agency's Asteroid Initiative planning and to...

  20. 78 FR 64253 - NASA Asteroid Initiative Idea Synthesis Workshop

    Science.gov (United States)

    2013-10-28

    ... SPACE ADMINISTRATION NASA Asteroid Initiative Idea Synthesis Workshop AGENCY: National Aeronautics and... to the recent RFI for the agency's Asteroid Initiative. SUMMARY: The National Aeronautics and Space Administration announces that the agency will resume the NASA Asteroid Initiative Idea Synthesis...

  1. Storyboard GALILEO CRUISE SCIENCE OPPORTUNITIES describes asteroid encounters

    Science.gov (United States)

    1989-01-01

    Storyboard with mosaicked image of an asteroid and entitled GALILEO CRUISE SCIENCE OPPORTUNITIES describes asteroid objectives. These objectives include: first asteroid encounter; surface geology, composition size, shape, mass; and relation of primitive bodies to meteorites.

  2. Recovering and Mining Asteroids with a Gas-Sealed Enclosure

    Science.gov (United States)

    Jenniskens, P.; Damer, B.; Norkus, R.; Pilotz, S.; Grigsby, B.; Adams, C.; Blair, B. R.

    2015-01-01

    The internal structure of weakly consolidated rubble piles and primitive asteroids can be studied closer to home, and such asteroids can be mined, if it is possible to create a gas-sealed enclosure around the asteroid.

  3. Regular Motions of Resonant Asteroids

    Science.gov (United States)

    Ferraz-Mello, S.

    1990-11-01

    RESUMEN. Se revisan resultados analiticos relativos a soluciones regulares del problema asteroidal eliptico promediados en la vecindad de una resonancia con jupiten Mencionamos Ia ley de estructura para libradores de alta excentricidad, la estabilidad de los centros de liberaci6n, las perturbaciones forzadas por la excentricidad de jupiter y las 6rbitas de corotaci6n. ABSTRAC This paper reviews analytical results concerning the regular solutions of the elliptic asteroidal problem averaged in the neighbourhood of a resonance with jupiter. We mention the law of structure for high-eccentricity librators, the stability of the libration centers, the perturbations forced by the eccentricity ofjupiter and the corotation orbits. Key words: ASThROIDS

  4. Colorimetry and magnitudes of asteroids

    Science.gov (United States)

    Bowell, E.; Lumme, K.

    1979-01-01

    In the present paper, 1500 UBV observations are analyzed by a new rather general multiple scattering theory which provided clear insight into previously poorly-recognized optical nature of asteroid surfaces. Thus, phase curves are shown to consist of a surface-texture controlled component, due to singly scattered light, and a component due to multiple scattering. Phase curve shapes can be characterized by a single parameter, the multiple scattering factor, Q. As Q increases, the relative importance of the opposition effect diminishes. Asteroid surfaces are particulate and strikingly similar to texture, being moderately porous and moderately rough on a scale greater than the wavelength of light. In concequence, Q (and also the phase coefficient) correlate well with geometric albedo, and there exists a purely photometric means of determining albedos and diameters.

  5. Comets and Asteroids with FIRST

    Science.gov (United States)

    Bockelée-Morvan, D.; Crovisier, J.

    2001-07-01

    The infrared and microwave domains have proved to be privileged tools to study the physical and chemical properties of small bodies of the Solar System. After a review of the recent results obtained on comets and asteroids in these wavelength ranges, we forecast the major outcomes that can be expected from their observations with the Herschel Space Observatory (hereafter referred as to FIRST, the former denomination). This prospect is focussed on: 1) observations of water rotational lines in comets to measure water outgassing and study water excitation in the coma and its kinematics; 2) observations of HDO in comets to constrain solar nebula models and formation scenarii of comets; 3) the study of surface properties of asteroids.

  6. Stabilities of asteroid orbits in resonances

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    A map of the asteroid motion is studied carefully. An exponential diffusion law in the chaotic sea and an algebraic law in the mixed region are observed. The effects of perturbations on diffusion are also discussed. The fixed points, their stabilities and the diffusion properties of the map give qualitative explanations of the distribution of asteroids, i.e. the depletion and accumulation of asteroids in the outer main belt, particularly in the first order mean motion resonances with Jupiter.

  7. Exospheres from Asteroids to Planets

    Science.gov (United States)

    Killen, Rosemary M.; Burger, Matthew H.; Farrell, William M.; DREAM2

    2016-10-01

    The study of exospheres can help us understand the long-term loss of volatiles from planetary bodies due to interactions of planets, satellites, and small bodies with the interplanetary medium (solar wind, meteors, and dust), solar radiation, internal forces including diffusion and outgassing, and surface effects like sticking and chemistry. Recent evidence for water and OH on the moon has spurred interest in processes involving chemistry and sequestration of volatile species at the poles and in voids. In recent years, NASA has sent spacecraft to asteroids including Vesta and Ceres, and ESA sent Rosetta to the asteroids Lutetia and Steins. OSIRIS-REX will return a sample from a primitive asteroid, Bennu, to Earth. It is possible that a Phobos-Deimos flyby will be a precursor to a manned mission to Mars. Exospheric particles are derived from the surface and to some extent from interplanetary dust and meteoroids. By comparing the exospheric compositions before and after major meteor shower events it may be possible to determine the extent to which the exosphere reflects the surface composition. Observation of an escaping exosphere, termed a corona, is challenging. We therefore have embarked on a parametrical study of exospheres as a function of basic controlling parameters such as the mass of the primary object, mass of the exospheric species, heliocentric distance, rotation rate of the primary, composition of the body (asteroid type or icy body). These parameters will be useful for mission planning as well as quick look data to determine the size and location of bodies likely to retain their exospheres and observability of exospheric species. We will also consider the sizes of small clusters that may be gravitationally bound to small bodies such as Phobos. In addition, it is of interest to be able to determine the extent of contamination of the pristine exosphere due to the spacecraft sent to make measurements, and the effect on the measurements of outgassing in the

  8. Near Earth Asteroid (NEA) Scout

    Science.gov (United States)

    Johnson, Les; Castillo-Rogez, Julie; Dervan, Jared; McNutt, Leslie

    2017-01-01

    NASA is developing solar sail propulsion for a near-term Near Earth Asteroid (NEA) reconnaissance mission that will lay the groundwork for the future use of solar sails. The NEA Scout mission will use the sail as primary propulsion allowing it to survey and image one NEA's of interest for future human exploration. NEA Scout will launch on the first mission of the Space Launch System (SLS) in 2018. After its first encounter with the Moon, NEA Scout will enter the sail characterization phase by the 86 square meter sail deployment. A mechanical Active Mass Translation (AMT) system, combined with the remaining ACS propellant, will be used for sail momentum management. The spacecraft will perform a series of lunar flybys to achieve optimum departure trajectory before beginning its two year-long cruise. About one month before the asteroid flyby, NEA Scout will start its approach phase using optical navigation on top of radio tracking. The solar sail will provide NEA Scout continuous low thrust to enable a relatively slow flyby of the target asteroid under lighting conditions favorable to geological imaging. Once complete, NASA will have demonstrated the capability to fly low-cost, high delta V CubeSats to perform interplanetary missions.

  9. Asteroid families, dynamics and astrometry

    Science.gov (United States)

    Williams, J. G.; Gibson, J.

    1987-01-01

    The proper elements and family assignments for the 1227 Palomar-Leiden Survey asteroids of high quality were tabulated. In addition to the large table, there are also auxiliary tables of Mars crossers and commensurate objects, histograms of the proper element distributions, and a discussion. Probably the most important part of the discussion describes the Mars crossing boundary, how the closest distances of approach to Mars and Jupiter are calculated, and why the observed population of Mars crossers should bombard that planet episodically rather than uniformly. Analytical work was done to derive velocity distributions of family forming events from proper element distributions subject to assumptions which may be appropriate for cratering events. Software was developed for a microcomputer to permit plotting of the proper elements. Three orthogonal views are generated and stereo pairs can be printed when desired. This program was created for the study of asteroid families. The astrometry task is directed toward measuring and reducing positions on faint comets and the minor planets with less common orbits. The observational material is CCD frames taken with the Palomar 1.5 m telescope. Positions of 10 comets and 16 different asteroids were published on the Minor Planet Circulars.

  10. Loss of SynDIG1 Reduces Excitatory Synapse Maturation But Not Formation In Vivo

    Science.gov (United States)

    Kaur, Inderpreet; Liu, Xiao-Bo; Kirk, Lyndsey M.; Speca, David J.; McMahon, Samuel A.; Zito, Karen

    2016-01-01

    Abstract Modification of the strength of excitatory synaptic connections is a fundamental mechanism by which neural circuits are refined during development and learning. Synapse Differentiation Induced Gene 1 (SynDIG1) has been shown to play a key role in regulating synaptic strength in vitro. Here, we investigated the role of SynDIG1 in vivo in mice with a disruption of the SynDIG1 gene rather than use an alternate loxP-flanked conditional mutant that we find retains a partial protein product. The gene-trap insertion with a reporter cassette mutant mice shows that the SynDIG1 promoter is active during embryogenesis in the retina with some activity in the brain, and postnatally in the mouse hippocampus, cortex, hindbrain, and spinal cord. Ultrastructural analysis of the hippocampal CA1 region shows a decrease in the average PSD length of synapses and a decrease in the number of synapses with a mature phenotype. Intriguingly, the total synapse number appears to be increased in SynDIG1 mutant mice. Electrophysiological analyses show a decrease in AMPA and NMDA receptor function in SynDIG1-deficient hippocampal neurons. Glutamate stimulation of individual dendritic spines in hippocampal slices from SynDIG1-deficient mice reveals increased short-term structural plasticity. Notably, the overall levels of PSD-95 or glutamate receptors enriched in postsynaptic biochemical fractions remain unaltered; however, activity-dependent synapse development is strongly compromised upon the loss of SynDIG1, supporting its importance for excitatory synapse maturation. Together, these data are consistent with a model in which SynDIG1 regulates the maturation of excitatory synapse structure and function in the mouse hippocampus in vivo.

  11. Eccentricity distribution in the main asteroid belt

    Science.gov (United States)

    Malhotra, Renu; Wang, Xianyu

    2017-03-01

    The observationally complete sample of the main belt asteroids now spans more than two orders of magnitude in size and numbers more than 64 000 (excluding collisional family members). We undertook an analysis of asteroids' eccentricities and their interpretation with simple physical models. We find that a century old conclusion that the asteroids' eccentricities follow a Rayleigh distribution holds for the osculating eccentricities of large asteroids, but the proper eccentricities deviate from a Rayleigh distribution; there is a deficit of eccentricities smaller than ∼0.1 and an excess of larger eccentricities. We further find that the proper eccentricities do not depend significantly on asteroid size but have strong dependence on heliocentric distance; the outer asteroid belt follows a Rayleigh distribution, but the inner belt is strikingly different. Eccentricities in the inner belt can be modelled as a vector sum of a primordial eccentricity vector of random orientation and magnitude drawn from a Rayleigh distribution of parameter ∼0.06, and an excitation of random phase and magnitude ∼0.13. These results imply that when a late dynamical excitation of the asteroids occurred, it was independent of asteroid size and was stronger in the inner belt than in the outer belt. We discuss implications for the primordial asteroid belt and suggest that the observationally complete sample size of main belt asteroids is large enough that more sophisticated model-fitting of the eccentricities is warranted and could serve to test alternative theoretical models of the dynamical excitation history of asteroids and its links to the migration history of the giant planets.

  12. The Steward Observatory asteroid relational database

    Science.gov (United States)

    Sykes, Mark V.; Alvarezdelcastillo, Elizabeth M.

    1992-01-01

    The Steward Observatory Asteroid Relational Database (SOARD) was created as a flexible tool for undertaking studies of asteroid populations and sub-populations, to probe the biases intrinsic to asteroid databases, to ascertain the completeness of data pertaining to specific problems, to aid in the development of observational programs, and to develop pedagogical materials. To date SOARD has compiled an extensive list of data available on asteroids and made it accessible through a single menu-driven database program. Users may obtain tailored lists of asteroid properties for any subset of asteroids or output files which are suitable for plotting spectral data on individual asteroids. A browse capability allows the user to explore the contents of any data file. SOARD offers, also, an asteroid bibliography containing about 13,000 references. The program has online help as well as user and programmer documentation manuals. SOARD continues to provide data to fulfill requests by members of the astronomical community and will continue to grow as data is added to the database and new features are added to the program.

  13. Periodic Motion near the Surface of Asteroids

    CERN Document Server

    Jiang, Yu; Li, Hengnian

    2015-01-01

    We are interested in the periodic motion and bifurcations near the surface of an asteroid. The gravity field of an irregular asteroid and the equation of motion of a particle near the surface of an asteroid are studied. The periodic motions around the major body of triple asteroid 216 Kleopatra and the OSIRIS REx mission target asteroid 101955 Bennu are discussed. We find that motion near the surface of an irregular asteroid is quite different from the motion near the surface of a homoplastically spheroidal celestial body. The periodic motions around the asteroid 101955 Bennu and 216 Kleopatra indicate that the geometrical shapes of the orbits are probably very sophisticated. There exist both stable periodic motions and unstable periodic motions near the surface of the same irregular asteroid. This periodic motion which is unstable can be resonant or non resonant. The period doubling bifurcation and pseudo period doubling bifurcation of periodic orbits coexist in the same gravity field of the primary of the t...

  14. The Compositional Structure of the Asteroid Belt

    CERN Document Server

    DeMeo, Francesca E; Walsh, Kevin J; Chapman, Clark R; Binzel, Richard P

    2015-01-01

    The past decade has brought major improvements in large-scale asteroid discovery and characterization with over half a million known asteroids and over 100,000 with some measurement of physical characterization. This explosion of data has allowed us to create a new global picture of the Main Asteroid Belt. Put in context with meteorite measurements and dynamical models, a new and more complete picture of Solar System evolution has emerged. The question has changed from "What was the original compositional gradient of the Asteroid Belt?" to "What was the original compositional gradient of small bodies across the entire Solar System?" No longer is the leading theory that two belts of planetesimals are primordial, but instead those belts were formed and sculpted through evolutionary processes after Solar System formation. This article reviews the advancements on the fronts of asteroid compositional characterization, meteorite measurements, and dynamical theories in the context of the heliocentric distribution of...

  15. Origin of igneous meteorites and differentiated asteroids

    Science.gov (United States)

    Scott, E.; Goldstein, J.; Asphaug, E.; Bottke, W.; Moskovitz, N.; Keil, K.

    2014-07-01

    Introduction: Igneously formed meteorites and asteroids provide major challenges to our understanding of the formation and evolution of the asteroid belt. The numbers and types of differentiated meteorites and non-chondritic asteroids appear to be incompatible with an origin by fragmentation of numerous Vesta-like bodies by hypervelocity impacts in the asteroid belt over 4 Gyr. We lack asteroids and achondrites from the olivine-rich mantles of the parent bodies of the 12 groups of iron meteorites and the ˜70 ungrouped irons, the 2 groups of pallasites and the 4--6 ungrouped pallasites. We lack mantle and core samples from the parent asteroids of the basaltic achondrites that do not come from Vesta, viz., angrites and the ungrouped eucrites like NWA 011 and Ibitira. How could core samples have been extracted from numerous differentiated bodies when Vesta's basaltic crust was preserved? Where is the missing Psyche family of differentiated asteroids including the complementary mantle and crustal asteroids [1]? Why are meteorites derived from far more differentiated parent bodies than chondritic parent bodies even though C and S class chondritic asteroids dominate the asteroid belt? New paradigm. Our studies of meteorites, impact modeling, and dynamical studies suggest a new paradigm in which differentiated asteroids accreted at 1--2 au less than 2 Myr after CAI formation [2]. They were rapidly melted by 26Al and disrupted by hit-and-run impacts [3] while still molten or semi-molten when planetary embryos were accreting. Metallic Fe-Ni bodies derived from core material cooled rapidly with little or no silicate insulation less than 4 Myr after CAI formation [4]. Fragments of differentiated planetesimals were subsequently tossed into the asteroid belt. Meteorite evidence for early disruption of differentiated asteroids. If iron meteorites were samples of Fe-Ni cores of bodies that cooled slowly inside silicate mantles over ˜50--100 Myr, irons from each core would have

  16. File list: Oth.Dig.05.AllAg.GP5d [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.05.AllAg.GP5d hg19 TFs and others Digestive tract GP5d SRX360576,SRX360594,...0,SRX360578,SRX360581,SRX360577,SRX360588,SRX360595,SRX360579,SRX360590 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.05.AllAg.GP5d.bed ...

  17. File list: Oth.Dig.50.AllAg.GP5d [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.50.AllAg.GP5d hg19 TFs and others Digestive tract GP5d SRX360576,SRX360580,...8,SRX360581,SRX360577,SRX360588,SRX360595,SRX360579,SRX360590,SRX360582 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.50.AllAg.GP5d.bed ...

  18. File list: Oth.Dig.10.AllAg.GP5d [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.10.AllAg.GP5d hg19 TFs and others Digestive tract GP5d SRX360576,SRX360589,...0,SRX360578,SRX360581,SRX360577,SRX360588,SRX360595,SRX360579,SRX360590 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.10.AllAg.GP5d.bed ...

  19. File list: Oth.Dig.20.AllAg.GP5d [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Dig.20.AllAg.GP5d hg19 TFs and others Digestive tract GP5d SRX360576,SRX360580,...8,SRX360581,SRX360577,SRX360588,SRX360595,SRX360579,SRX360590,SRX360582 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Dig.20.AllAg.GP5d.bed ...

  20. Reconstructing HST Images of Asteroids

    Science.gov (United States)

    Storrs, A. D.; Bank, S.; Gerhardt, H.; Makhoul, K.

    2003-12-01

    We present reconstructions of images of 22 large main belt asteroids that were observed by Hubble Space Telescope with the Wide-Field/Planetary cameras. All images were restored with the MISTRAL program (Mugnier, Fusco, and Conan 2003) at enhanced spatial resolution. This is possible thanks to the well-studied and stable point spread function (PSF) on HST. We present some modeling of this process and determine that the Strehl ratio for WF/PC (aberrated) images can be improved to 130 ratio of 80 We will report sizes, shapes, and albedos for these objects, as well as any surface features. Images taken with the WFPC-2 instrument were made in a variety of filters so that it should be possible to investigate changes in mineralogy across the surface of the larger asteroids in a manner similar to that done on 4 Vesta by Binzel et al. (1997). Of particular interest are a possible water of hydration feature on 1 Ceres, and the non-observation of a constriction or gap between the components of 216 Kleopatra. Reduction of this data was aided by grant HST-GO-08583.08A from the Space Telescope Science Institute. References: Mugnier, L.M., T. Fusco, and J.-M. Conan, 2003. JOSA A (submitted) Binzel, R.P., Gaffey, M.J., Thomas, P.C., Zellner, B.H., Storrs, A.D., and Wells, E.N. 1997. Icarus 128 pp. 95-103

  1. Olivine-dominated Asteroids: Mineralogy and Origin

    CERN Document Server

    Sanchez, Juan A; Kelley, Michael S; Cloutis, Edward A; Bottke, William F; Nesvorný, David; Lucas, Michael P; Hardersen, Paul S; Gaffey, Michael J; Abell, Paul A; Corre, Lucille Le

    2013-01-01

    Olivine-dominated asteroids are a rare type of objects formed either in nebular processes or through magmatic differentiation. The analysis of meteorite samples suggest that at least 100 parent bodies in the main belt experienced partial or complete melting and differentiation before being disrupted. However, only a few olivine-dominated asteroids, representative of the mantle of disrupted differentiated bodies, are known to exist. Due to the paucity of these objects in the main belt their origin and evolution have been a matter of great debate over the years. In this work we present a detailed mineralogical analysis of twelve olivine-dominated asteroids. Within our sample we distinguish two classes, one that we call pure-olivine asteroids and another referred to as olivine-rich asteroids. For the pure-olivine asteroids the olivine chemistry was found to range from ~ Fo49 to Fo70, consistent with the values measured for brachinites and R chondrites. In the case of the olivine-rich asteroids we determined thei...

  2. Rotational Study of Ambiguous Taxonomic Classified Asteroids

    Science.gov (United States)

    Linder, Tyler R.; Sanchez, Rick; Wuerker, Wolfgang; Clayson, Timothy; Giles, Tucker

    2017-01-01

    The Sloan Digital Sky Survey (SDSS) moving object catalog (MOC4) provided the largest ever catalog of asteroid spectrophotometry observations. Carvano et al. (2010), while analyzing MOC4, discovered that individual observations of asteroids which were observed multiple times did not classify into the same photometric-based taxonomic class. A small subset of those asteroids were classified as having both the presence and absence of a 1um silicate absorption feature. If these variations are linked to differences in surface mineralogy, the prevailing assumption that an asteroid’s surface composition is predominantly homogenous would need to be reexamined. Furthermore, our understanding of the evolution of the asteroid belt, as well as the linkage between certain asteroids and meteorite types may need to be modified.This research is an investigation to determine the rotational rates of these taxonomically ambiguous asteroids. Initial questions to be answered:Do these asteroids have unique or nonstandard rotational rates?Is there any evidence in their light curve to suggest an abnormality?Observations were taken using PROMPT6 a 0.41-m telescope apart of the SKYNET network at Cerro Tololo Inter-American Observatory (CTIO). Observations were calibrated and analyzed using Canopus software. Initial results will be presented at AAS.

  3. Target Asteroids! Observing Campaigns for April through June 2017

    Science.gov (United States)

    Hergenrother, Carl; Hill, Dolores

    2017-04-01

    Asteroid campaigns to be conducted by the Target Asteroids! program during the April-June 2017 quarter are described. In addition to asteroids on the original Target Asteroids! list of easily accessible spacecraft targets, an effort has been made to identify other asteroids that are 1) brighter and easier to observe for small telescope users and 2) analogous to (101955) Bennu and (162173) Ryugu, targets of the OSIRIS-REx and Hayabusa-2 sample return missions.

  4. Dynamics of rotationally fissioned asteroids: Source of observed small asteroid systems

    CERN Document Server

    Jacobson, Seth A

    2014-01-01

    We present a model of near-Earth asteroid (NEA) rotational fission and ensuing dynamics that describes the creation of synchronous binaries and all other observed NEA systems including: doubly synchronous binaries, high- e binaries, ternary systems, and contact binaries. Our model only presupposes the Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect, "rubble pile" asteroid geophysics, and gravitational interactions. The YORP effect torques a "rubble pile" asteroid until the asteroid reaches its fission spin limit and the components enter orbit about each other (Scheeres, D.J. [2007]. Icarus 189, 370-385). Non-spherical gravitational potentials couple the spin states to the orbit state and chaotically drive the system towards the observed asteroid classes along two evolutionary tracks primarily distinguished by mass ratio. Related to this is a new binary process termed secondary fission - the secondary asteroid of the binary system is rotationally accelerated via gravitational torques until it fissions, thu...

  5. Near Earth Asteroids- Prospection, Orbit Modification and Mining

    Science.gov (United States)

    Grandl, W.; Bazso, A.

    2014-04-01

    The number of known Near Earth Asteroids (NEAs) has increased continuously during the last decades. Now we understand the role of asteroid impacts for the evolution of life on Earth. To ensure that mankind will survive in the long run, we have to face the "asteroid threat" seriously. On one hand we will have to develop methods of detection and deflection for Hazardous Asteroids, on the other hand we can use these methods to modify their orbits and exploit their resources. Rare-earth elements, rare metals like platinum group elements, etc. may be extracted more easily from NEAs than from terrestrial soil, without environmental pollution or political and social problems. In a first step NEAs, which are expected to contain resources like nickel-iron, platinum group metals or rare-earth elements, will be prospected by robotic probes. Then a number of asteroids with a minimum bulk density of 2 g/cm^3 and a diameter of 150 to 500 m will be selected for mining. Given the long duration of an individual mission time of 10-20 years, the authors propose a "pipeline" concept. While the observation of NEAs can be done in parallel, the precursor missions of the the next phase can be launched in short intervals, giving time for technical corrections and upgrades. In this way a continuous data flow is established and there are no idle times. For our purpose Potentially Hazardous Asteroids (PHAs) seem to be a favorable choice for the following reasons: They have frequent closeencounters to Earth, their minimum orbit intersection distance is less than 0.05 AU (Astronomic Units) and they have diameters exceeding 150 meters. The necessary velocity change (delta V) for a spaceship is below 12 km/s to reach the PHA. The authors propose to modify the orbits of the chosen PHAs by orbital maneuvers from solar orbits to stable Earth orbits beyond the Moon. To change the orbits of these celestial bodies it is necessary to develop advanced propulsion systems. They must be able to deliver high

  6. Difficult cases in photometric studies of asteroids

    Science.gov (United States)

    Marciniak, Anna; Pilcher, Frederick; Oszkiewicz, Dagmara; Bartczak, Przemysław; Santana-Ros, Toni; Kamiński, Krzysztof; Urakawa, Seitaro; Ogłoza, Waldemar; Fauvaud, Stéphane; Kankiewicz, Paweł; Kudak, Viktor; Żejmo, Michał; Nishiyama, Kota; Okumura, Shin-ichiro; Nimura, Tokuhiro; Hirsch, Roman; Konstanciak, Izabella; Tychoniec, Łukasz; Figas, Michał

    2016-06-01

    We present a photometric campaign targeted at asteroids that display both long periods of rotation and small amplitudes of brightness variations. Our aim is to debias available sample of spin and shape modelled asteroids and to correct previous wrong period determinations. Our newest findings are corrected period determinations for asteroids (279) Thule (P=23.896h ± 0.005 h), (673) Edda (P=22.340h ± 0.004 h), and (737) Arequipa (P=7.0259h ± 0.0003 h). Supporting lightcurves are presented in this paper.

  7. Spectroscopy of near-Earth asteroids

    DEFF Research Database (Denmark)

    Michelsen, René; Nathues, Andreas; Lagerkvist, Claes-Ingvar

    2006-01-01

    We present spectra and taxonomic classifications of 12 Near-Earth Asteroids (NEAs) and 2 inner Main Belt asteroids. The observations were carried out with the ESO 3.5 m NTT and the Danish 1.54 m telescope at La Silla, Chile. Eleven of the investigated NEAs belong to the S class while only one C......-type has been identified. Two NEAs were observed at phase angles larger than 60 degrees introducing significant phase reddening. In order to allow for comparisons between spectra of asteroids observed at different phase angles we make attempts to correct for this effect. However, it turned out...

  8. Asteroids@home - A BOINC distributed computing project for asteroid shape reconstruction

    CERN Document Server

    Durech, Josef; Vanco, Radim

    2015-01-01

    We present the project Asteroids@home that uses distributed computing to solve the time-consuming inverse problem of shape reconstruction of asteroids. The project uses the Berkeley Open Infrastructure for Network Computing (BOINC) framework to distribute, collect, and validate small computational units that are solved independently at individual computers of volunteers connected to the project. Shapes, rotational periods, and orientations of the spin axes of asteroids are reconstructed from their disk-integrated photometry by the lightcurve inversion method.

  9. ASIME 2016 White Paper: In-Space Utilisation of Asteroids: "Answers to Questions from the Asteroid Miners"

    OpenAIRE

    Graps, Amara L.; Blondel, Philippe; Bonin, Grant; Britt, Daniel; Centuori, Simone; Delbo, Marco; Drube, Line; Duffard, Rene; Elvis, Martin; Faber, Daniel; Frank, Elizabeth; Galache, JL; Green, Simon F.; Grundmann, Jan Thimo; Hsieh, Henry

    2016-01-01

    The aim of the Asteroid Science Intersections with In-Space Mine Engineering (ASIME) 2016 conference on September 21-22, 2016 in Luxembourg City was to provide an environment for the detailed discussion of the specific properties of asteroids, with the engineering needs of space missions that utilize asteroids. The ASIME 2016 Conference produced a layered record of discussions from the asteroid scientists and the asteroid miners to understand each other's key concerns and to address key scien...

  10. Digging in one last time for the LHC

    CERN Multimedia

    2003-01-01

    A landmark event occurred during the second week of March, when the final cubic metres of earth were cleared away, completing the excavation phase for the entire LHC project . The event took place at Point 5, where the CMS detector will be installed, as civil engineering teams finished digging the cavern that connects the LHC tunnel with the bypass tunnel around the experimental cavern. Two new access shafts, two large caverns, two ancillary caverns, as well as the connecting tunnels have been excavated by the civil engineering teams. "The engineers heaved a huge sigh of relief when the work was done, because the excavations were quite risky. Anything can happen, and the risk of delays was far from zero," explains Jean Luc Baldy Head of ST Division's civil engineering group. This was especially true around Point 5, where unusual geology created some problems. The moraine-molasse interface lies 50 metres beneath the surface, or just about 18 metres above the roof of the caverns. Because the moraine consists of...

  11. Water in Asteroid 4 Vesta

    Science.gov (United States)

    Taylor, G. J.

    2015-01-01

    Eucrite meteorites come from asteroid 4 Vesta, which was recently studied from orbit by NASA's Dawn mission. Adam Sarafian (Woods Hole Oceanographic Institute) and colleagues at Woods Hole, the University of Bristol, England, and the University of New Mexico measured the hydrogen concentration and deuterium/hydrogen (D/H) ratio in crystals of the mineral apatite (calcium phosphate) in eucrites. They found that the D/H ratio is in the same range as in carbonaceous chondrites, most samples of the Earth's mantle, and in samples of basaltic meteorites from Mars. Combined with measurements of the isotopic compositions of nitrogen and carbon, the data suggest that these volatile elements were added to Earth early in its history, probably during its formation. Other studies conclude that water with D/H like that in carbonaceous chondrites, Earth, Mars, and Vesta were likely inherited from interstellar ice that predates formation of the solar system.

  12. Chelyabinsk: Portrait of an asteroid airburst

    Energy Technology Data Exchange (ETDEWEB)

    Kring, David A.; Boslough, Mark

    2014-09-01

    Video and audio from hundreds of smartphones and dashboard cameras combined with seismic, acoustic, and satellite measurements provide the first precise documentation of a 10 000-ton asteroid explosion.

  13. Origins for the near-earth asteroids

    Science.gov (United States)

    Binzel, Richard P.; Xu, Shui; Bus, Schelte J.; Bowell, Edward

    1992-01-01

    Because of their short dynamical lifetimes, the population of near-earth asteroids (NEAs) must be resupplied. Two sources have been hypothesized: main-belt asteroids and extinct comet nuclei. A new survey of physical properties for less than 5 kilometers diameter main-belt asteroids reveals that their spin rate and shape distributions are similar to those of NEAs, as is fully consistent with a main-belt origin for most NEAs. Physical data on comet nuclei are limited. If the existing sample is representative of the comet population, analysis of the asteroid and comet samples constrains the fraction of comet nuclei to between 0 and 40 percent of the total NEA population.

  14. Mineralogy and Surface Composition of Asteroids

    CERN Document Server

    Reddy, Vishnu; Thomas, Cristina A; Moskovitz, Nicholas A; Burbine, Thomas H

    2015-01-01

    Methods to constrain the surface mineralogy of asteroids have seen considerable development during the last decade with advancement in laboratory spectral calibrations and validation of our interpretive methodologies by spacecraft rendezvous missions. This has enabled the accurate identification of several meteorite parent bodies in the main asteroid belt and helped constrain the mineral chemistries and abundances in ordinary chondrites and basaltic achondrites. With better quantification of spectral effects due to temperature, phase angle, and grain size, systematic discrepancies due to non-compositional factors can now be virtually eliminated for mafic silicate-bearing asteroids. Interpretation of spectrally featureless asteroids remains a challenge. This paper presents a review of all mineralogical interpretive tools currently in use and outlines procedures for their application.

  15. The Cratering History of Asteroid (21) Lutetia

    CERN Document Server

    Marchi, S; Vincent, J -B; Morbidelli, A; Mottola, S; Marzari, F; Kueppers, M; Besse, S; Thomas, N; Barbieri, C; Naletto, G; Sierks, H

    2011-01-01

    The European Space Agency's Rosetta spacecraft passed by the main belt asteroid (21) Lutetia the 10th July 2010. With its ~100km size, Lutetia is one of the largest asteroids ever imaged by a spacecraft. During the flyby, the on-board OSIRIS imaging system acquired spectacular images of Lutetia's northern hemisphere revealing a complex surface scarred by numerous impact craters, reaching the maximum dimension of about 55km. In this paper, we assess the cratering history of the asteroid. For this purpose, we apply current models describing the formation and evolution of main belt asteroids, that provide the rate and velocity distributions of impactors. These models, coupled with appropriate crater scaling laws, allow us to interpret the observed crater size-frequency distribution (SFD) and constrain the cratering history. Thanks to this approach, we derive the crater retention age of several regions on Lutetia, namely the time lapsed since their formation or global surface reset. We also investigate the influe...

  16. Colors of Dynamically Associated Asteroid Pairs

    CERN Document Server

    Moskovitz, Nicholas

    2012-01-01

    Recent dynamical studies have identified pairs of asteroids that reside in nearly identical heliocentric orbits. Possible formation scenarios for these systems include dissociation of binary asteroids, collisional disruption of a single parent body, or spin-up and rotational fission of a rubble-pile. Aside from detailed dynamical analyses and measurement of rotational light curves, little work has been done to investigate the colors or spectra of these unusual objects. A photometric and spectroscopic survey was conducted to determine the reflectance properties of asteroid pairs. New observations were obtained for a total of 34 individual asteroids. Additional photometric measurements were retrieved from the Sloan Digital Sky Survey Moving Object Catalog. Colors or spectra for a total of 42 pair components are presented here. The main findings of this work are: (1) the components in the observed pair systems have the same colors within the uncertainties of this survey, and (2) the color distribution of asteroi...

  17. 挖拔式木薯收获机的研制与样机试验%Development and prototype trial of digging-pulling style cassava harvester

    Institute of Scientific and Technical Information of China (English)

    廖宇兰; 孙佑攀; 刘世豪; 陈丹萍; 王高平

    2012-01-01

    Aim at the complexity of cassava tuber distributing in the soil,in order to harvest cassava tuber from different soils with a variety of hard levels,referencing the basic principles and structure of potatoes,garlic,sweet potatoes and other root crops harvesting machinery,a kind of digging-pulling style cassava harvester was developed based on cassava's biological and physical characteristics,which can complete tuber's digging,transportation,separation and other work simultaneously.The digging shovel,clamping conveyor and power transmission mechanism were designed and the key parameters were determined.The key parameters of the grizzly bar-type shovel is shovel's plane angle of on more 20°,the shovel's length of is 550 mm and shovel's width is 1000 mm.The total transmission ratio is 2.29,gearbox's transmission ratio is 2.The gearbox output shaft speed is 500 r/min.The chain transmission ratio is 1.15,and output speed is 435 r/min.The digging-pulling cassava harvester should be used with medium-sized tractor.Through the trial of the prototype and field test,the results showed that digging-pulling cassava harvester runs smoothly,and reaches the combination of digging and pulling to harvest cassava.%针对木薯块根在土壤中分布的复杂性,为了将木薯块根顺利地从各种松硬程度不同的土壤收获出来,模拟人工收获木薯的机理,借鉴马铃薯、大蒜、红薯等根茎类作物收获机械的基本原理和结构,以木薯生物和物理特性为依据,该文研制出一种可一次性完成薯块的挖掘、分离、输送等工作的挖拔式木薯收获机.该文主要介绍了挖掘铲、夹持输送机构及动力传输机构及关键参数的确定.该栅条式挖掘铲的关键参数为铲平面倾角为20°,铲长为550 mm,铲宽为1 000 mm.计算出整机总传动比为2.29,变速箱传动比为2,输出速度为500 r/min,链传动的传动比为1.15,输出速度为435 r/min.该机与中型拖拉机配套使用,通过样机的

  18. An Early Warning System for Asteroid Impact

    Science.gov (United States)

    Tonry, John L.

    2011-01-01

    Earth is bombarded by meteors, occasionally by one large enough to cause a significant explosion and possible loss of life. It is not possible to detect all hazardous asteroids, and the efforts to detect them years before they strike are only advancing slowly. Similarly, ideas for mitigation of the danger from an impact by moving the asteroid are in their infancy. Although the odds of a deadly asteroid strike in the next century are low, the most likely impact is by a relatively small asteroid, and we suggest that the best mitigation strategy in the near term is simply to move people out of the way. With enough warning, a small asteroid impact should not cause loss of life, and even portable property might be preserved. We describe an early warning system that could provide a week’s notice of most sizeable asteroids or comets on track to hit the Earth. This may be all the mitigation needed or desired for small asteroids, and it can be implemented immediately for relatively low cost. This system, dubbed Asteroid Terrestrial-Impact Last Alert System (ATLAS), comprises two observatories separated by about 100 km that simultaneously scan the visible sky twice a night. Software automatically registers a comparison with the unchanging sky and identifies everything that has moved or changed. Communications between the observatories lock down the orbits of anything approaching the Earth, within one night if its arrival is less than a week. The sensitivity of the system permits detection of 140 m asteroids (100 Mton impact energy) three weeks before impact and 50 m asteroids a week before arrival. An ATLAS alarm, augmented by other observations, should result in a determination of impact location and time that is accurate to a few kilometers and a few seconds. In addition to detecting and warning of approaching asteroids, ATLAS will continuously monitor the changing universe around us: most of the variable stars in our Galaxy, many microlensing events from stellar

  19. Asteroid models from the Lowell photometric database

    Science.gov (United States)

    Ďurech, J.; Hanuš, J.; Oszkiewicz, D.; Vančo, R.

    2016-03-01

    Context. Information about shapes and spin states of individual asteroids is important for the study of the whole asteroid population. For asteroids from the main belt, most of the shape models available now have been reconstructed from disk-integrated photometry by the lightcurve inversion method. Aims: We want to significantly enlarge the current sample (~350) of available asteroid models. Methods: We use the lightcurve inversion method to derive new shape models and spin states of asteroids from the sparse-in-time photometry compiled in the Lowell Photometric Database. To speed up the time-consuming process of scanning the period parameter space through the use of convex shape models, we use the distributed computing project Asteroids@home, running on the Berkeley Open Infrastructure for Network Computing (BOINC) platform. This way, the period-search interval is divided into hundreds of smaller intervals. These intervals are scanned separately by different volunteers and then joined together. We also use an alternative, faster, approach when searching the best-fit period by using a model of triaxial ellipsoid. By this, we can independently confirm periods found with convex models and also find rotation periods for some of those asteroids for which the convex-model approach gives too many solutions. Results: From the analysis of Lowell photometric data of the first 100 000 numbered asteroids, we derived 328 new models. This almost doubles the number of available models. We tested the reliability of our results by comparing models that were derived from purely Lowell data with those based on dense lightcurves, and we found that the rate of false-positive solutions is very low. We also present updated plots of the distribution of spin obliquities and pole ecliptic longitudes that confirm previous findings about a non-uniform distribution of spin axes. However, the models reconstructed from noisy sparse data are heavily biased towards more elongated bodies with high

  20. Olivine-dominated asteroids: Mineralogy and origin

    OpenAIRE

    Sanchez, Juan A.; Reddy, Vishnu; Kelley, Michael S.; Cloutis, Edward A.; Bottke, William F.; Nesvorný, David; Lucas, Michael P.; Hardersen, Paul S.; Gaffey, Michael J.; Abell, Paul A.; Corre, Lucille Le

    2013-01-01

    Olivine-dominated asteroids are a rare type of objects formed either in nebular processes or through magmatic differentiation. The analysis of meteorite samples suggest that at least 100 parent bodies in the main belt experienced partial or complete melting and differentiation before being disrupted. However, only a few olivine-dominated asteroids, representative of the mantle of disrupted differentiated bodies, are known to exist. Due to the paucity of these objects in the main belt their or...