4,891 research outputs found

    True airspeed measured by airborne laser Doppler velocimeter

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    Velocimeter utilizing carbon dioxide laser measures true airspeed of aircraft. Results of flight tests indicate that clear-weather airspeeds can be measured with accuracy better than 0.1% at altitudes up to 3000 meters; measurements can be made at much greater altitudes in cloudy or turbid air

    Towards electron transport measurements in chemically modified graphene: The effect of a solvent

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    Chemical functionalization of graphene modifies the local electron density of the carbon atoms and hence electron transport. Measuring these changes allows for a closer understanding of the chemical interaction and the influence of functionalization on the graphene lattice. However, not only chemistry, in this case diazonium chemistry, has an effect on the electron transport. Latter is also influenced by defects and dopants resulting from different processing steps. Here, we show that solvents used in the chemical reaction process change the transport properties. In more detail, the investigated combination of isopropanol and heating treatment reduces the doping concentration and significantly increases the mobility of graphene. Furthermore, the isopropanol treatment alone increases the concentration of dopants and introduces an asymmetry between electron and hole transport which might be difficult to distinguish from the effect of functionalization. The results shown in this work demand a closer look on the influence of solvents used for chemical modification in order to understand their influence

    The Great Reconciliation

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    The Great Reconciliation is truly the core and center of the entire system of Christian doctrine. All other teachings of the Bible either lead up thereto, or they proceed therefrom. Thus the doctrine of the Law and of sin shows us the need of a reconciliation. The doctrine of grace and of the redemption through Christ shows us how this reconciliation was effected. The doctrine of the means of grace and of faith teaches us how this reconciliation is made known and offered to sinners and how the individual personally apprehends the same. The doctrine of the Church shows that all those who through faith have accepted this reconciliation constitute one large body in this world, the family of God\u27s children among men. The doctrine of sanctification shows us that all those who by faith are personally reconciled to God will gratefully consecrate their lives to His service. The doctrine of the last things, finally, tells us that all who have remained faithful unto the end will enter into the full communion with their heavenly Father

    The Christ of St. John\u27s Gospel

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    The purpose in writing this treatise on the Christ in St. John\u27s Gospel is most ably expressed by the Beloved Disciple himself when he says in his gospel 20,31, But these things are written, that ye might believe that Jesus is the Christ, the Son of God.” Jesus did so many things outside of those recorded in the gospels that John says, I suppose that even the world itself could not contain the books that should be written , 21,25. Therefore, with the help of God, the present writer, too, shall try to briefly show from this one gospel that Jesus, the son of Joseph and Mary, was also Christ, the promised Messiah and Son of God

    OPENING REMARKS

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    The purpose of this Vertebrate Pest Control Conference are several. They are to: 1. Get acquainted with other persons in the field of vertebrate pest control ; 2. Learn the best and safest methods of vertebrate pest control; 3. Hear what is going on in the various fields of research; 4. Stimulate new research; 5. Improve communications between research workers and between research workers, pest control operators and industry developers of materials used in the field of vertebrate pest control; 6. Inform the public about the true role of vertebrate pest control and why it is sometimes necessary, and 7. Attempt to eliminate misunderstandings between those of us who are engaged in vertebrate pest control and the general public

    Paleoseismic and Slip-Rate Observations along the Honey Lake Fault Zone, Northeastern California, USA

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    The Honey Lake fault is a major strike-slip fault in northeastern California that accommodates northwest-directed right-lateral shear in the northern Walker Lane. We reexamine the fault’s paleoseismic history and slip rate by evaluating a natural stream bank exposure of the fault and offset terrace riser. Structural and stratigraphic relations within the modern stream cut, radiocarbon ages, and a detailed topographic survey of the offset terrace riser are used to estimate a Holocene fault slip rate of 1.7–0.6 mm/yr or more. We also interpret the occurrence of at least four surface-rupturing earthquakes during the last 7025 calendar years before present (B.P.). Three of the surface-rupturing earthquakes occurred prior to 4670 calendar years B.P. and have interevent times that range between 730 and 990 yr. The stratigraphic record is limited after ~4670 calendar years B.P., and records evidence for at least one more subsequent surface-rupturing earthquake

    Bipolar Nickel-hydrogen Batteries for Aerospace Applications

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    A bipolar nickel-hydrogen battery which effectively addresses all key requirements for a spacecraft power system, including long-term reliability and low mass, is discussed. The design of this battery is discussed in the context of system requirements and nickel-hydrogen battery technology in general. To achieve the ultimate goal of an aerospace application of a bipolar Ni-H2 battery several objectives must be met in the design and development of the system. These objectives include: maximization of reliability and life; high specific energy and energy density; reasonable cost of manufacture, test, and integration; and ease in scaling for growth in power requirements. These basic objectives translate into a number of specific design requirements, which are discussed

    Welding, brazing, and soldering handbook

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    Handbook gives information on the selection and application of welding, brazing, and soldering techniques for joining various metals. Summary descriptions of processes, criteria for process selection, and advantages of different methods are given
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