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| Master VIOLET RA - High Frequency Wand-TeslaThu, 18 Dec 2008 15:12:24 -0800 by Cabanas751DunhillAn working version of the Master VIOLET RAY - High Frequency WAND. The Master Violet Ray is applied through vacuum applicators or electrodes made of annealed glass. These electrodes diffuse the electrical current in sprays of a beautiful deep violet color. I have only tried one of these electrodes, there are many. The Violet Ray offers a pleasant, effective means of destroying germs and banishing various diseases while building up the tissues and toning up the system generally. Related: the master violet ray high frequency wand | |
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| Automatically Generated Morph SequenceMon, 15 Dec 2008 18:56:17 -0800 by jschmidVisionA computer vision based morph between 6 hot celebrities, and 6 random women from Google Image Archives, (perhaps on their way to becoming celebrities themselves). Our vision system optimized the sequence of faces and the smoothness of each transition pair in order to morph without the usually required manual-entry of control point pairs. The sequence optimizations were implemented using Simulated Annealing to improve a Greedy Tour as an approximation to the NP-hard Travelling Salesman Problem, which must find an optimal Hamiltonian Circuit through the graph of face-nodes among the exponential possibilities of such tours. You can tell that even our approximated system is wise, because Lindsay Lohan is morphed into Dar Williams, producing a few frames of what could only be otherwise achieved through decades of expensive cloning and DNA splicing procedures. This is a Final Exam Team Project for the University of Pennsylvania's GRASP Robotics Lab course: CIS-581, Computer Vision. Taught by Professor Jianbo Shi, Fall 2008. Authors: Srinivasan Dwarakanathan, Hua-Min Shen, Jonathan Schmid. Related: automatically generated morph sequence female celebrities simulated annealing hamiltonian circuit approximation | |
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| Steel Industry 1944 Toledo OhioSun, 14 Dec 2008 20:43:23 -0800 by markdcatlinAn good look at steelmaking as done during WWII, long before OSHA and EPA. For most iron-making, the essential features are coke ovens and the blast furnace, where coke is produced from coal and iron ore is melted (reduced) to produce pig iron, respectively. The furnace is charged from the top with iron ore, coke and limestone; hot air, frequently enriched with oxygen, is blown in from the bottom; and the carbon produced from the coke transforms the iron ore into pig iron containing carbon, with the generation of carbon monoxide and carbon dioxide. The limestone acts as a flux. At a temperature of 1,600°C, the pig iron melts and collects at the bottom of the furnace. The furnace is tapped (i.e. the pig iron is removed) periodically, and the pig iron is cast into pigs for later use (e.g. in foundries), or is poured into ladles where it is transferred, still molten, to the steel-making plant. The purpose of steel-making operations is to refine the pig iron which contains large amounts of carbon and other impurities. The carbon content must be reduced, the impurities oxidized and removed, and the iron converted into a highly elastic metal that can be forged and fabricated. Alloying agents may be added at this stage. Different types of melting furnace are used in this process. Steel is cast into slabs, billets, bars, ingots and other shapes. Subsequent steps may include scarfing, pickling, annealing, hot and cold rolling, extrusion, galvanizing, surface coating, cutting and slitting, and other operations designed to produce a variety of steel products. Operations in the iron and steel industry may expose workers to a wide range of hazards or workplace activities or conditions that could cause incidents, injury, death, ill health or diseases. For a comprehensive looks at the hazards and their control, go to the 2005 Code of Practice for safety and health in the iron and steel industry at http://www.ilo.org/p ublic/english/protec tion/safework/cops/e nglish/index.htm .This was clipped from the 1944 US Government film, Steeltown. Related: steel iron foundry safety health steelworker usw union osha niosh industrial hygiene | |
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| JMDMT #2664 Microfossils of Cyanobacteria in Carbonaceous MeteoritesMon, 24 Nov 2008 07:37:21 -0800 by h4ck3rm1k3The James M. DuPont Meteorite Collection - 12 cm (exact weight unknown but estimated at ?30 kg). opaque minerals. There are two textures. In the larger part of the Mineralogy and classification (D. H. Hill, UAz): the specimen appears sections, olivine occurs as rounded euhedral grains, poikilitically to have a complete fusion crust with some regmaglypts. The meteorite enclosed in a megacryst of orthopyroxene; in the other side of the has two textural regions?one structureless and one with sections, it shows a cumulate texture, consisting of euhedral recrystallised, 1 mm-sized domains, suggestive of pre-atmospheric orthopyroxene, clinopyroxene, olivine and interstitial plagioclase. heating and subsequent annealing. Bulk composition (D. H. Hill, Chromite, the most common Related: meteorite life fossils cyanobacteria carbonaceous | |
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| JMDMT #2501 Microfossils of Cyanobacteria in Carbonaceous MeteoritesMon, 24 Nov 2008 05:13:20 -0800 by h4ck3rm1k3The James M. DuPont Meteorite Collection - pyroxene experienced an additional annealing event. The second annealing after a prolonged (first) annealing may produce the Ca gradient near the interface between augite lamella and low-Ca pyroxene. A 39Ar-40Ar age of 4.495 Ga for Ibitira may date this second annealing, because the second annealing which alters the Ca profile in pyroxene probably reset the 39Ar-40Ar age. Acknowledgments: The author thanks Prof. A. J. Brearley for the Ibitira thin section. References: [1] Steele I. M. and Smith J. V. (1976) EPSL, 33, 67-78. [2] Bogard D. D. and Garrison D. H. (1995) GCA, 59, 4317-4322. [3] Takeda H. and Graham A. L. (1991) Meteoritics, 26, 129-134. [4] Miyamoto M. and Takeda H. (1994) EPSL, 122, 343-349. [5] Warren P. H. and Rasmussen K. L. (1987) JGR, 92, 3453-3465. Related: meteorite life fossils cyanobacteria carbonaceous | |
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| JMDMT #2500 Microfossils of Cyanobacteria in Carbonaceous MeteoritesMon, 24 Nov 2008 05:12:09 -0800 by h4ck3rm1k3The James M. DuPont Meteorite Collection - of augite lamella is out of shape. This cooling history may correspond to a prolonged annealing (the first annealing [1]) which caused pyroxene equilibrium. Pyroxene initially having the uniform bulk Ca content of 16 mol% and mg# (=100 x Mg/(Mg + Fe)) of 44 begins to exsolve at 1050 degrees C and cools down to 600 degrees C at a rate of about 0.01 degrees C/yr, forming an augite lamella about 10 micrometer in width. The best-fit burial depth is about 800 m in a sheet having a thermal diffusivity of 0.004 cm2/s, a typical value for solid rock. For a thermal diffusivity of 0.0001 cm2/s[5], a value for regolith-like material, the best-fit burial depth is about 130 m. The Ca profile of augite lamellae (Fig. 1) suggests that Ibitira Related: meteorite life fossils cyanobacteria carbonaceous | |
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| JMDMT #2497 Microfossils of Cyanobacteria in Carbonaceous MeteoritesMon, 24 Nov 2008 05:09:37 -0800 by h4ck3rm1k3The James M. DuPont Meteorite Collection -30, 586-587. [2] Allsopp H. L. et al. (1991) S. Afr. J. Sci., 87, 431-442. [3] Grieve R. A. F. et al. (1991) JGR, 96, 22,753-22,764. [4] Krogh T. E. et al. (1984) OGS, Sp. Vol. 1, 431-446. [5] Kamo S. L. et al. (1995) Geocongress 95, S. Africa, 566-569. [6] Ostermann M. et al. (1996) Meteoritics Planet. Sci., this volume. [7] Therriault A. M. et al. (1996) J. S. Afr. Geol., 99, 1-21. [8] Grant R. W. and Bite A. (1984) OGS, Sp. Vol. 1, 275-300. [9] Bisschoff A. A. (1996) S. Afr. J. Geol., 99, 89-92. [10] Lightfoot P. C. et al. (1995) Proc. IGCP 336, 109-110. [11] Walraven F. et al. (1990) Tectonophysics, 171, 23-48. Miyamoto M. Pyroxene Exsolution Lamella of the Ibitira Noncumulate Eucrite: Implication for Annealing Ibitira is an unbrecciated noncumulate eucrite with old Pb-Pb ages[1, Related: meteorite life fossils cyanobacteria carbonaceous | |
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| JMDMT #2492 Microfossils of Cyanobacteria in Carbonaceous MeteoritesMon, 24 Nov 2008 05:04:49 -0800 by h4ck3rm1k3The James M. DuPont Meteorite Collection - thermal annealing event at effective temperature up to 400 degrees C; (2) TL parameters for the monomineral grains mainly reflects their shock-induced structure properties [2,3]; (3) Zagami meteorite might have originated in the high-pressure-heatin g impact event that probably reflected in the specificity of the track and TL parameters for the large igneous origin olivine grains. References: [1] Ostertag et. al. (1985) LPS XVI, 19-21. [2] Ivliev A. I. et al. (1993) LPS XXIV, 699-700. [3] Ivliev A. I. et al. (1995) Geochimiya, N 9, 1367-1377 (in Russian). Therriault A. M. Ostermann M. Grieve R. A. F. Deutsch A. Are Vredefort Granophyre and Sudbury Offsets Birds of a Feather? The two oldest known impact structures on Earth are: Vredefort Related: meteorite life fossils cyanobacteria carbonaceous | |
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| JMDMT #2060 Microfossils of Cyanobacteria in Carbonaceous MeteoritesSun, 23 Nov 2008 22:07:07 -0800 by h4ck3rm1k3The James M. DuPont Meteorite Collection - In addition, more abundant than the spherules, there are numerous irregular clasts of limestone about the same size as the spherules, with subangular outlines which show that the clasts were solid at the time of emplacement. These clasts are composed of tiny euhedral calcite crystals which are free of deformation and have a texture suggestive of annealing. Some of the clasts are homogeneously composed of this microsparry calcite; others contain subrounded to circular bodies of coarser calcite which appear to be filled vesicles. Some limestone fragments show features resembling those found in shocked carbonates. Thus, the ejecta-curtain material at distances up to 1000 km from the center of the Chicxulub crater contains both originally solid and originally molten material as well Related: meteorite life fossils cyanobacteria carbonaceous | |
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| JMDMT #1702 Microfossils of Cyanobacteria in Carbonaceous MeteoritesSun, 23 Nov 2008 16:21:18 -0800 by h4ck3rm1k3The James M. DuPont Meteorite Collection - rich in N. Charges were melted in graphite in the PC apparatus at 1750 degrees C and 10 kbar and quickly cooled to final temperatures between 1200 degrees C and 1500 degrees C where they were annealed from several hours to days. Compositions were determined on the AMNH microprobe and N and O determined using a synthetic multilayer crystal. Three N-rich minerals were formed. Perhaps of greatest cosmochemical significance is the formation of what appears (from the EPMA analysis) to be N-rich hibonite (CaAl12O19; N-hibonite). Table 1 shows a comparison of N-hibonite with that of a natural hibonite found in Murchison [3]. Note the close similarity in cations. The N-hibonites contain between 2.5 and 3 wt% N (3.6-4.2 Related: meteorite life fossils cyanobacteria carbonaceous | |
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| JMDMT #1652 Microfossils of Cyanobacteria in Carbonaceous MeteoritesSun, 23 Nov 2008 15:31:23 -0800 by h4ck3rm1k3The James M. DuPont Meteorite Collection - liquid droplets occurred at preferred Al2O3/SiO2 configurations during the gas-liquid transition. The preservation of compositional peaks in the annealed sample (1100 degrees C) confirms that isolated entities were prevented from reacting to match compositions of the solvus crests. Subsolidus phase decomposition into sillimanite nanocrystals and an amorphous silica-rich aluminosilica matrix during autoannealing was preserved during thermal annealing. Acknowledgments: We thank Drs. Jerzy Janik and Joe Nuth for IR analyses. This work was supported by NASA Grant NAGW-3646. Conclusion: Amorphous phase relationships during condensation of fluffy aluminosilica materials and subsequent thermal annealing are predictable by the Related: meteorite life fossils cyanobacteria carbonaceous | |
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