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The First Paleoindian Fishtail Point Find in Salta Province, Northwestern Argentina  [PDF]
Claudio J. Patané Aráoz, Hugo G. Nami
Archaeological Discovery (AD) , 2014, DOI: 10.4236/ad.2014.22004
Abstract: Fishtail or Fell projectile points represent an excellent marker to know the presence of earliest hunter-gatherers populations living during the end of the Pleistocene and its transition to the Holocene. They are widespread in many places along Central and South America. However, there are certain areas with elusive occurrence. Adding new information on the continental and regional distributions of this paleo South American artefact, this paper reports a detailed morphological and technological study of the first fishtail point found in the Salta province, Northwestern Argentina.
Fishtail Projectile Points from South America: The Brazilian Record  [PDF]
Daniel Loponte, Mirian Carbonera, Romina Silvestre
Archaeological Discovery (AD) , 2015, DOI: 10.4236/ad.2015.33009
Abstract: The projectile points known as Fishtail or Fell represent a specific design associated with the earliest hunter-gatherers of the Pleistocene-Holocene transition in South America. Brazil was traditionally considered as a marginal area of their distribution because in the past there were only a small number of findings known, often inadequately documented. In this paper we present a general and unified overview of the Brazilian record, including previously unpublished metric, technological and stylistic features. Also, we report on new findings of fishtail points in order to expand the amount of information currently available. Some issues related to these records are also evaluated by comparing them with data from the Uruguayan plains and the Argentinean pampas. The general picture that emerges after this analysis shows a growing record of fishtail projectile points in southern Brazil, demonstrating a significant presence of these early paleo-South American populations.
A fake cusp and a fishtail  [PDF]
Selman Akbulut
Mathematics , 1999,
Abstract: We construct smooth 4-manifolds that are homeomorphic but not diffeomorphic to the "cusp" and the "fishtail", which are certain thickened singular 2-spheres.
Fishtail phenomenon in Ho-added PMP YBCO
Yong Feng,Lian Zhou,Lei Shi,J. G. Wen,N. Koshizuka,Wanming Yang,Xiaozu Wu
Chinese Science Bulletin , 1998, DOI: 10.1007/BF02883386
Abstract: The Y1-xHoxBa2Cu3Oy superconductors were fabricated by the powder melting process (PMP) method and the magnetic hysteresis loops of these samples were measured at different temperatures by a SQUID magnetometer (up to 7 T). Critical current density was calculated by the Bean critical state model. The results indicate that the fishtail effect is observed in Y0.6Ho0.4Ba2Cu3Oy below 60 K, while no fishtail can be found in Y0Ho0.2Ba2Cu3Oy until 30 K. The peak field at whichJ c, reaches its maximum decreases with the increasing magnetic field. In the Y0.6Ho0.4Ba2Cu3Oy sample, the fishtail effect disappears when the temperature is raised to 77 K. In addition, after the Y0.6Ho0.4Ba2Cu3Oy sample was re-sintered at high temperature for a long time, the fishtail can be found in two field directions (Haa//C and H⊥C). It is considered that the paramagnetism in the sample may be responsible for the fishtail effect in Ho-added YBCO. Also, the cation disorder created by Ho addition may be another reason for the fishtail.
Reclaimed Water for Turfgrass Irrigation  [PDF]
Gregory Evanylo,Erik Ervin,Xunzhong Zhang
Water , 2010, DOI: 10.3390/w2030685
Abstract: Sustainable irrigation of turfgrass grown on coarse-textured soils with reclaimed water must avoid detrimental effects of soluble salts on plant growth and soil quality and groundwater enrichment of nitrogen (N) and phosphorus (P). The purpose of this study was (1) to investigate the effects of irrigating with municipal reclaimed water containing higher concentrations of soluble salts than potable water on turfgrass growth and quality and (2) to compare the effects of reclaimed and potable water on turfgrass assimilation and leaching of N and P. A sand-based medium plumbed to supply potable and reclaimed water and instrumented with lysimeters to collect leachate was planted with hybrid bermudagrass (Cynodon dactylon x Cynodon transvaalensis var. Tifsport) and creeping bentgrass (Agrostis stolonifera var. L-93). Both species produced high quality turfgrass with the reclaimed water. Although both grasses are moderately or highly salt tolerant when fully established, the bermudagrass growth and quality were reduced by the reclaimed water upon breaking dormancy, and its N use during this period was reduced. Continuous use of reclaimed water of the quality used in the study poses a potential soil Na accumulation problem. Both turfgrasses assimilated high amounts of N and P with minimal potential losses to groundwater.
Analog of Fishtail Anomaly in Plastically Deformed Graphene  [PDF]
S. Sergeenkov,F. M. Araujo-Moreira
Physics , 2013, DOI: 10.1134/S0021364013150149
Abstract: By introducing a strain rate generated pseudo-electric field, we discuss a magnetic response of a plastically deformed graphene. Our results demonstrate the appearance of dislocation induced paramagnetic moment in a zero applied magnetic field. More interestingly, it is shown that in the presence of the magnetoplastic effect, the resulting magnetization exhibits typical features of the so-called fishtail anomaly (previously observed in superconductors). The estimates of the model parameters suggest quite an optimistic possibility to experimentally realize the predicted phenomena in plastically deformed graphene.
Fishtail Points, Technology and Microwear Analysis from the Negro River Basin, Uruguay  [PDF]
Hugo G. Nami, Alicia Castro
Archaeological Discovery (AD) , 2014, DOI: 10.4236/ad.2014.23008
Abstract: Ongoing research performed in the central part of Uruguay added new Paleo-Southamerican finds from the Negro River basin. A number of lithic exemplars were analyzed to determine their technology and function. The examined artifacts provided a new perspective on Fisthail points. Microwear analysis showed that there is a difference in the location of microscopic polishing between the blade and stem in the examined points. Polishing in the stem’s border might be attributed to leather or a similar substance, probably the leather cord or sinew used to bind the points in the foreshaft. The surface of the stem shows a coarse micro-topography and has patches of black residues. The coarse micro-topography suggests the use of an adhesive substance covering the whole stem, while the black patches are probably the residue used to glue the points in the foreshafts. Most remarkable is the discovery of the use of edge-to-edge and overshot flaking for bifacial reduction, technical features shared with Paleoindian fishtailed points from North and Central America.
An overview of reclaimed water reuse in China
Lili Yi,Wentao Jiao,Xiaoning Chen,Weiping Chen,
Lili Yi
,Wentao Jiao,Xiaoning Chen,Weiping Chen

环境科学学报(英文版) , 2011,
Abstract: China is facing severe water problems including scarcity and pollution which are now becoming key factors restricting developments. Creating an alternative water resource and reducing effluent discharges, water reuse has been recognized as an integral part of water and wastewater management scheme in China. The government has launched nationwide efforts to optimize the benefits of utilizing reclaimed water. This article reviewed the water reuse activities in China, including: (1) application history and current status; (2) potentials of reclaimed water reuse; (3) laws, policies and regulations governing reclaimed water reuse; (4) risks associated with reclaimed water reuse; (5) issues in reclaimed water reuse. Reclaimed water in Beijing and Tianjin were given as examples. Suggestions for improving the efficiencies of reusing urban wastewater were advanced. Being the largest user of reclaimed wastewater in the world, China's experience can benefit the development of water reuse in other regions.
Fishtail effect and vortex dynamics in LiFeAs single crystals  [PDF]
A. K. Pramanik,L. Harnagea,C. Nacke,A. U. B. Wolter,S. Wurmehl,V. Kataev,B. Büchner
Physics , 2010, DOI: 10.1103/PhysRevB.83.094502
Abstract: We investigate the fishtail effect, critical current density ($J_c$) and vortex dynamics in LiFeAs single crystals. The sample exhibits a second peak (SP) in the magnetization loop only with the field $||$ c-axis. We calculate a reasonably high $J_c$, however, values are lower than in 'Ba-122' and '1111'-type FeAs-compounds. Magnetic relaxation data imply a strong pinning which appears not to be due to conventional defects. Instead, its behavior is similar to that of the triplet superconductor Sr$_2$RuO$_4$. Our data suggest that the origin of the SP may be related to a vortex lattice phase transition. We have constructed the vortex phase diagram for LiFeAs on the field-temperature plane.
Chemomagnetism, magnetoconcentration effect and "fishtail" anomaly in chemically-induced granular superconductors  [PDF]
Sergei Sergeenkov
Physics , 2002, DOI: 10.1134/1.1564227
Abstract: Within a 2D model of Josephson junction arrays (created by 2D network of twin boundary dislocations with strain fields acting as insulating barrier between hole-rich domains in underdoped crystals), a few novel effects expected to occur in intrinsically granular material are predicted including: (i) Josephson chemomagnetism (chemically induced magnetic moment in zero applied magnetic field) and its influence on a low-field magnetization (chemically induced paramagnetic Meissner effect), and (ii) magnetoconcentration effect (creation of oxygen vacancies in applied magnetic field) and its influence on a high-field magnetization (chemically induced analog of "fishtail" anomaly). The conditions under which these effects can be experimentally measured in non-stoichiometric high-T_c superconductors are discussed.
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