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Saleh, Ahmad M. M.S.E., Purdue University, May 2012. Modeling Of Flat-Plate Solar Collector Operation in Transient States. Major Professor: Hosni Abu-Mulaweh. Solar energy is becoming an alternative for the limited fossil fuel resources. One of the simplest and most direct applications of this energy is the conversion of solar radiation into heat, which can be used in water heating systems. A c...
Surface mining in West Virginia has disturbed large tracts of forested land. In the 1930s to 1960s, reclamation generally involved replanting of trees on mined sites, but revegetation practices gradually evolved into seeding of forages for erosion control as federal and state laws were enacted in the 1970s. Reforestation of mined lands has recently become an important issue and both federal and...
We show that if G = (V,E) is a 4-connected flat graph, then any real symmetric V × V matrix M with exactly one negative eigenvalue and satisfying, for any two distinct vertices i and j, Mij < 0 if i and j are adjacent, and Mij = 0 if i and j are nonadjacent, has the Strong Arnold Property: there is no nonzero real symmetric V ×V matrix X with MX = 0 and Xij = 0 whenever i and j are equal or adj...
For finitely generated module M over a local ring R, the conventional notions of complete intersection dimension CI-dimRM and CohenMacaulay dimension CM-dimRM do not extend to cover the case of infinitely generated modules. In this paper we introduce similar invariants for not necessarily finitely generated modules, (namely, complete intersection flat and Cohen-Macaulay flat dimensions) which f...
We present Hubble Space Telescope optical and near-IR transmission spectra of the transiting hot-Jupiter WASP-31b. The spectrum covers 0.3–1.7 μm at a resolution R ∼ 70, which we combine with Spitzer photometry to cover the full-optical to IR. The spectrum is dominated by a cloud deck with a flat transmission spectrum which is apparent at wavelengths>0.52μm. The cloud deck is present at high al...
Concerns on fine dust originated from agricultural lands such as reclaimed tidelands located in the western coastal area of South Korea is increasing. Saemangeum land (RTL), which area, inherently susceptible to windblown due strong westerly winds and relatively flat terrain with few hills or mountains. In addition, RTL has a low organic matter content (<5%) thus soils are also wind erosion. Th...
Introduction: The relationship between biomechanical parameters and different types of posture problems in association with running is unknown. Therefore, this study aimed to investigate the excursion changes at the hip, knee, and ankle joints during running in the patients with flat foot. Methods: The participants comprised 12 healthy men and 12 others suffering from flat feet disorder. They ...
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