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Articles 2611 - 2627 of 2627
Full-Text Articles in Engineering
Flake Aligner Including Baffles Supported On Continuously Moving Conveyor, Anders E. Lund, Gordon P. Krueger, Lynn B. Sandberg, Roy D. Adams
Flake Aligner Including Baffles Supported On Continuously Moving Conveyor, Anders E. Lund, Gordon P. Krueger, Lynn B. Sandberg, Roy D. Adams
Michigan Tech Patents
Apparatus for forming a continuous elongated loosely felted mat of thin elongated wood flakes with the flakes being aligned in mutually parallel interleaved relation. The apparatus includes a plurality of belts positioned in adjacent side-by-side relation and for continuous movement so as to define a supporting surface for the mat. A plurality of sets of thin planar baffle plates are provided, each set including a plurality of thin planar baffle plates supported in coplanar alignment and in edge-to-edge adjacent relation. The baffle plates are positioned between a hopper for depositing wood flakes and the supporting surface and function to align …
Method For Molding Articles Having Non-Planar Portions From Matted Wood Flakes, Bruce A. Haataja, Tauno B. Kilpela, Anders E. Lund, James F. Hamilton
Method For Molding Articles Having Non-Planar Portions From Matted Wood Flakes, Bruce A. Haataja, Tauno B. Kilpela, Anders E. Lund, James F. Hamilton
Michigan Tech Patents
An article having non-planar portions, such as a pallet having a substantially flat deck member and a plurality of hollow leg members projecting integrally from the deck member, is molded as a one-piece unit from a loosely-felted, layered mat formed from a mixture of a resinous particle board binder and flake-like wood particles. The wood flakes have an average length of about 11/4 to about 6 inches, preferably about 2 to about 3 inches, an average thickness of about 0.005 to about 0.075 inch, preferably about 0.015 to about 0.025 inch, and an average width of 3 inches or less …
Estimating Particle Sizes, Concentrations, And Total Mass Of Ash In Volcanic Clouds Using Weather Radar, David M. Harris, William I. Rose
Estimating Particle Sizes, Concentrations, And Total Mass Of Ash In Volcanic Clouds Using Weather Radar, David M. Harris, William I. Rose
Department of Geological and Mining Engineering and Sciences Publications
Observations of the March 19, 1982 ash eruption of Mount St. Helens, made by the National Weather Service (NWS, Portland, Oregon) on 5-cm radar, were used to estimate the volume of the ash cloud (2000 ±500 km3), the concentration of ash (0.2–0.6 g m−3). and the total mass of ash erupted (3–10×1011 g). The position of the cloud was also tracked by radar. Particle sizes in the ash cloud were estimated from settling velocities suggested by decreases in maximum ash cloud height with time as it moved away from the volcano. The March 19, 1982 …
Method And Apparatus For Making Aligned Flake Composite Wood Material Including Integral Baffles, Gordan P. Krueger, Anders E. Lund, Roy D. Adams
Method And Apparatus For Making Aligned Flake Composite Wood Material Including Integral Baffles, Gordan P. Krueger, Anders E. Lund, Roy D. Adams
Michigan Tech Patents
A method and apparatus for forming a loosely felted mat of elongated wood flakes mixed with a binder, the mat including a longitudinal axis and the wood flakes being aligned in mutually parallel relation and parallel to the longitudinal axis of the mat. The wood flakes are held in alignment in the mat by a plurality of closely spaced thin planar baffles, the baffles being comprised of a material which can form an integral part of the mat.
Molded Wood Particle Pallet Having Increased Bending Strength, Bruce A. Haataja
Molded Wood Particle Pallet Having Increased Bending Strength, Bruce A. Haataja
Michigan Tech Patents
The invention includes a molded unitarily formed pallet comprising wood particles bonded together by a cured binder in compressed relation and forming a deck having an upper surface supporting a load, and a plurality of elongated substantially parallel spaced channels supporting the deck. The channels extend from adjacent one edge of the pallet to adjacent an opposite edge. The channels each including spaced channel side walls extending downwardly from said deck and terminating in a planar bottom wall parallel to the deck. The side walls are integrally joined at their upper edges to the deck and integrally joined at their …
Molded Wood Particle Products Including Integrally Joined Intersecting Members, Bruce A. Haataja
Molded Wood Particle Products Including Integrally Joined Intersecting Members, Bruce A. Haataja
Michigan Tech Patents
A molded product formed from wood flakes intermixed with a binder and a first elongated member formed from elongated wood flakes compressed and bonded together with a binder, the wood flakes having a grain direction extending generally parallel to the longitudinal axis of the flakes and the flakes being generally oriented in alignment with the longitudinal axis of the first elongated member. A second elongated member intersects the first elongated member and is integrally joined to it. The second elongated member is also formed from elongated wood flakes compressed and bonded together with a binder, the wood flakes being generally …
Treatment During Transport Of Solid Waste, Wayne M. Fassell
Treatment During Transport Of Solid Waste, Wayne M. Fassell
Michigan Tech Patents
The method of treatment during transport of solid waste by depositing the solid waste on the surface of a molten stream of lead traveling in one direction whereby organic material in the waste is subjected to thermal degradation, metals and other materials in the waste which are insoluble in the molten lead and of lesser specific gravity remain on the surface of the molten lead for removal and recovery while metals and other materials which are soluble in the molten lead dissolve in the molten lead for separation from the remainder while metal and materials which are insoluble in the …
Structural Members Comprised Of Composite Wood Material And Having Zones Of Diverse Density, Anders E. Lund, Gordan P. Krueger
Structural Members Comprised Of Composite Wood Material And Having Zones Of Diverse Density, Anders E. Lund, Gordan P. Krueger
Michigan Tech Patents
The disclosed invention includes an improved construction of structural members such as railroad crossties, highway spin posts and highway guard posts and to construction of said members from composite wood material including elongated wood flakes and to a method for making such improved structures.
Research On Atmospheric Volcanic Emissions: An Overview, James P. Friend, Alan R. Bandy, Jarvis L. Moyers, William H. Zoller, Richard E. Stoiber, Arnold L. Torres, William I. Rose, M. Patrick Mccormick, David C. Woods
Research On Atmospheric Volcanic Emissions: An Overview, James P. Friend, Alan R. Bandy, Jarvis L. Moyers, William H. Zoller, Richard E. Stoiber, Arnold L. Torres, William I. Rose, M. Patrick Mccormick, David C. Woods
Department of Geological and Mining Engineering and Sciences Publications
The project "Research on Atmospheric Volcanic Emissions" is a unique effort by NASA and university scientists to investigate the detailed chemical nature of plumes from volcanic eruptions. The major goals of the project are to: 1) understand the impact major eruptions will have on atmospheric chemistry processes, 2) understand the importance of volcanic emissions in the atmospheric geochemical cycles of selected species, 3) use knowledge of the plume chemical composition to diagnose and predict magmatic processes. Project RAVE'S first mission used the NASA Lockheed Orion P-3 outfitted with equipment to measure concentrations of the gases SO2, OCS, H …
Water-Soluble Material On Aerosols Collected Within Volcanic Eruption Clouds, David B. Smith, Robert A. Zielinski, William I. Rose, B. J. Huebert
Water-Soluble Material On Aerosols Collected Within Volcanic Eruption Clouds, David B. Smith, Robert A. Zielinski, William I. Rose, B. J. Huebert
Department of Geological and Mining Engineering and Sciences Publications
In February and March of 1978, filter samplers mounted on an aircraft were used to collect the aerosol fraction of the eruption clouds from three active Guatemalan volcanoes (Fuego, Pacaya, and Santiaguito). The samples were collected on Teflon (Fluoropore) filters with a nominal pore diameter of 0.5μm. The mass of air sampled by the filters ranged from 0.15 to 6.6 kg. The particulate material collected consisted of fragments of angular silicate ash and droplets of what is interpreted as dilute H2SO4 and HCl. After collection of the samples, each filter was rinsed with 60 ml of distilled-deionized …
Small Particles In Plumes Of Mount St. Helens, William I. Rose, Raymond L. Chuan, D. C. Woods
Small Particles In Plumes Of Mount St. Helens, William I. Rose, Raymond L. Chuan, D. C. Woods
Department of Geological and Mining Engineering and Sciences Publications
Particles in the size range of 0.1–25 micrometers were sampled by aircraft carrying a quartz crystal microcascade in the Mount St. Helens plume on three dates in August and September 1980. Two of the sampling dates represented ‘typical’ emissions of the volcano between plinian eruptions. One sampling flight was made 1–4 hours before the small plinian eruption of August 7, 1980, when the plume had become discontinuous and visibly darker. Size distributions were determined, and individual particles were studied by using scanning electron microscopy. The plume sampled on August 7, before the eruption, contained mainly approximately 2 micrometer diameter silicic …
Articles Molded From Papermill Sludge, Bruce A. Haataja, Anders E. Lund
Articles Molded From Papermill Sludge, Bruce A. Haataja, Anders E. Lund
Michigan Tech Patents
An article, such as a pallet having a substantially flat deck member and a plurality of hollow legs projecting from the deck member, is molded as a one-piece unit from a papermill sludge. Dried, comminuted papermill sludge is blended with a fibrous reinforcing material, preferably a cellulosic material such as fibrous bark particles, and a resinous particle board binder, the resulting mixture of furnish is formed into a loosely fitted mat, and the mat is placed between dyes of a mold and press and compressed to substantially the desired shape under temperature and pressure conditions sufficient to bond the sludge …
Carminomycin Analogue, Hassan S. El Khadem, David L. Swartz
Carminomycin Analogue, Hassan S. El Khadem, David L. Swartz
Michigan Tech Patents
A novel anthracycline glycoside 2-deoxy-L-fucopyranosyl carminomycinone which is effective for inhibiting the growth of tumors such as leukemia L1210.
Fingerling Shear, Tauno B. Kilpela, Bruce A. Haataja
Fingerling Shear, Tauno B. Kilpela, Bruce A. Haataja
Michigan Tech Patents
A fingerling shear for shearing a length of wood in a plane transverse to the grain direction and for splitting the sheared length along the grain direction to form a plurality of fingerlings. The shear includes a planar shearing blade, supported for rotation about a generally vertical axis, the planar shearing blade including an involute cutting edge adapted to engage the elongated piece of wood during rotation of the blade and for shearing off a length of that piece of wood, and a plurality of splitting blades fixed to the lower surface of the planar shearing blade and spaced along …
Determination Of The Total Grain Size Distribution In A Vulcanian Eruption Column, And Its Implications To Stratospheric Aerosol Perturbation, P. J. Murrow, William I. Rose, S. Self
Determination Of The Total Grain Size Distribution In A Vulcanian Eruption Column, And Its Implications To Stratospheric Aerosol Perturbation, P. J. Murrow, William I. Rose, S. Self
Department of Geological and Mining Engineering and Sciences Publications
Grain size analysis of samples representing all sampleable portions of the airfall deposit produced by the Fuego volcano in Guatemala on 14 October 1974 form the basis for estimating the total grain size distribution of tephra from this eruption. The region enclosed by each isopach has a particular average grain size distribution which can be weighted proportionally to its percentage volume. The grain size of pyroclastic avalanche deposits produced during the eruption are also included. The total grain size distribution calculated as a sum of weighted distributions has a median grain size of 0.8∅ (0.6mm) and a sorting coefficient (σ∅) …
Atmospheric Implications Of Studies Of Central American Volcanic Eruption Clouds, R. D. Cadle, A. L. Lazrus, B. J. Huebert, L. E. Heidt, William I. Rose, D. C. Woods, Raymond L. Chuan, Richard E. Stoiber, D. B. Smith, Robert A. Zielinski
Atmospheric Implications Of Studies Of Central American Volcanic Eruption Clouds, R. D. Cadle, A. L. Lazrus, B. J. Huebert, L. E. Heidt, William I. Rose, D. C. Woods, Raymond L. Chuan, Richard E. Stoiber, D. B. Smith, Robert A. Zielinski
Department of Geological and Mining Engineering and Sciences Publications
During February 1978 a group of scientists from the National Center for Atmospheric Research, several colleges and universities, the U.S. Geological Survey, and NASA used a specially equipped Beech Queen Air aircraft to make 11 sampling flights in Guatemala through the eruption clouds from the volcanoes Pacaya, Fuego, and Santiguito. Measurements were made of SO42−, SO2, HCl, HF, and 11 cations that were in water-soluble form, on samples collected by a specially designed filter pack. Particle size distributions were obtained with a piezoelectric cascade impactor, and the particles were identified by energy dispersive X ray …
The 1966 Eruption Of Izalco Volcano, El Salvador, William I. Rose, Richard E. Stoiber
The 1966 Eruption Of Izalco Volcano, El Salvador, William I. Rose, Richard E. Stoiber
Department of Geological and Mining Engineering and Sciences Publications
During October–November 1966 900,000 m3 of olivine basalt flowed from the flank of Izalco volcano, El Salvador. The total heat energy was approximately 1015 calories. No measurable changes in gravity occurred at stations on the active cone between August 1964 and August 1967. In the summit crater fumaroles have surface temperatures as high as 540°C. The cooling rate of these fumaroles was 18°C/yr before the eruption and 45°C/yr after. Yearly temperature cycles due to wet and dry seasons are superimposed on the general cooling trend. The rate of gas emission at four fumaroles in November 1967 was 86 …