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Nearly 4 % of the world’s forests are plantations, established to provide a variety of ecosystem services, principally timber and other wood products. In addition to such services, plantation forests provide direct and indirect benefits to biodiversity via the provision of forest habitat for a wide range of species, and by reducing negative impacts on(More)
The University of Maryland Electron Ring (UMER) group is currently exploring the physics of space-charge dominated beams. Seventeen Beam Position Monitors (BPMs) will be used to determine the beam centroid for steering correction purposes to within 0.5 mm. Since the pulse length is relatively long (100 ns), the BPMs can also be used for temporal beam(More)
Initial experimental results are presented for measurements of the emittance of an electron beam in the University of Maryland Electron Ring (UMER). Two independent sets of slit-collector systems are used to measure the emittance in the vertical and horizontal directions respectively. Results are then compared to the time integrated emittance measurements(More)
The amount and nature of dark energy (DE) can be tightly constrained by measuring the spatial correlation features and evolution of a sample of ∼ 100, 000 galaxy clusters over the redshift range 0 < z < ∼ 1.5. Such an X-ray survey will discover all collapsed structures with mass above 3.5 × 10 14 h −1 M ⊙ at redshifts z < 2 (i.e. the full range where such(More)
An integrated active optical, and passive thermal infrared sensing system was deployed on a low-level aircraft (50 m AGL) to record and map the simple ratio (SR) index and canopy temperature of a 230 ha cotton field. The SR map was found to closely resemble that created by a RapidEye satellite image, and the canopy temperature map yielded values consistent(More)
Alignment of experimental components is critical to operation of The University of Maryland Electron Ring (UMER). Procedures and equipment used to align components of the electron ring are presented. The compact nature of UMER (ring diameter ≈ 4 m) presents unique challenges and advantages associated with the placement of vacuum components, confinement and(More)
  • D W Lamb
  • 1984
Traumatic tetraplegia often affects healthy young men. The medullary lesion is located at C6 in 75% of cases. The author on the basis of 20 years of experience believes it possible to improve independence and life quality by surgical procedures such as tendon transfers, which are the most often used, for restoring two important functions: active elbow(More)
Deep-inelastic Ô scattering data, taken with the H1 detector at HERA, are used to study the event shape variables thrust, jet broadening, jet mass, parameter and two kinds of differential two-jet rate. The data cover a large range of the four-momentum transfer É, which is considered to be the relevant energy scale, between Î and ½¼¼ Î. The É dependences of(More)
Nitrogen (N) fertilization is crucial for the growth and development of wheat crops, and yet increased use of N can also result in increased stripe rust severity. Stripe rust infection and N deficiency both cause changes in foliar physiological activity and reduction in plant pigments that result in chlorosis. Furthermore, stripe rust produce pustules on(More)