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Search Results: 1 - 10 of 326090 matches for " Farley S. Braz "
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Photocatalytic Degradation of Ibuprofen Using TiO2 and Ecotoxicological Assessment of Degradation Intermediates against Daphnia similis  [PDF]
Farley S. Braz, Milady R. A. Silva, Flávio S. Silva, Sandro J. Andrade, Ana L. Fonseca, Márcia M. Kondo
Journal of Environmental Protection (JEP) , 2014, DOI: 10.4236/jep.2014.57063
Abstract:

Several pharmaceutical compounds have been detected in natural aqueous systems and ibuprofen (IBF), one of the most consumed medicament, has been detected in many countries. The degradation efficiency of IBF under TiO2/UV radiation was evaluated. Optimum degradation results were observed using 20 mg·L-1 of TiO2, pH 7.8 and 5 mg·L-1 of IBF. Under these experimental conditions total IBF removal was achieved in less than 60 min of irradiation. Although total IBF concentration was observed, the total mineralization of the compound was not achieved. The by-products generated during TiO2/UV reaction showed to be more toxic against Daphnia similis than the initial IBF present in aqueous solution.

Squeezed States in Black-Hole Evaporation by Analytic Continuation
Andrew N. S. J. Farley
Physics , 2002,
Abstract: We compute the semi-classical quantum amplitude to go from an initial spherically symmetric bosonic matter and gravitational field configuration to a final radiation configuration, corresponding to the relic Hawking radiation from a non-rotating, chargeless black hole which evaporates completely. This is obtained via the classical action integral which is solely a boundary term. On discretising the classical action, the quantum amplitude can be expressed in terms of generalised coherent states of the harmonic oscillator. A squeezed-state representation is obtained by complexifying the proper time separation T at spatial infinity between the initial and final space-like hypersurfaces. Such a procedure is deemed necessary as the two-surface problem for Dirichlet boundary data and wave-like perturbations is not well posed. We find that infinitesimal rotation into the lower complex T plane is equivalent to a highly-squeezed final state for the relic radiation, similar to the relic gravitational-wave background in cosmology. This final state is a pure state, and so the unpredictability associated with the final momentarily-naked singularity is avoided. The cosmological analogy is the tunnelling from an initial smooth Euclidean or timeless state to a classical universe. The high-squeezing limit corresponds to a final state of the Hawking flux which is indistinguishable from a stochastic collection of standing waves. The phases conjugate to the field amplitudes are squeezed to discrete values. We also discuss the entropy of the final radiation in the high-squeezing limit.
Finiteness properties of some groups of local similarities
Daniel S. Farley,Bruce Hughes
Mathematics , 2012,
Abstract: Hughes has defined a class of groups, which we call FSS (finite similarity structure) groups. Each FSS group acts on a compact ultrametric space by local similarities. The best-known example is Thompson's group V. Guided by previous work on Thompson's group V, we establish a number of new results about FSS groups. Our main result is that a class of FSS groups are of type F-infinity. This generalizes work of Ken Brown from the 1980s. Next, we develop methods for distinguishing between isomorphism types of some of the Nekrashevych-R\"over groups V_{d}(H), where H is a finite group, and show that all such groups V_{d}(H) have simple subgroups of finite index. Lastly, we show that FSS groups defined by small Sim-structures are braided diagram groups over tree-like semigroup presentations. This generalizes a result of Guba and Sapir, who first showed that Thompson's group V is a braided diagram group.
Aging and Weight-Ratio Perception
Jessica S. Holmin, J. Farley Norman
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0047701
Abstract: Past research has provided evidence that older adults have more difficulty than younger adults in discriminating small differences in lifted weight (i.e., the difference threshold for older adults is higher than that of younger adults). Given this result, one might expect that older adults would demonstrate similar impairments in weight ratio perception (a suprathreshold judgment) compared to younger adults. The current experiment compared the abilities of younger and older adults to perceive weight ratios. On any given trial, participants lifted two objects in succession and were asked to provide an estimate of the objects’ weight ratio (the weight of the heavier object relative to the lighter). The results showed that while the older participants’ weight ratio estimates were as reliable as those of the younger participants, they were significantly less accurate: the older participants frequently perceived the weight ratios to be much higher than they actually were.
A new contingency view of the organization: mananging complexity and uncertainty through cognition
Nobre, Farley Simon;Tobias, Andrew M.;Walker, David S.;
BAR. Brazilian Administration Review , 2010, DOI: 10.1590/S1807-76922010000400005
Abstract: this paper proposes a new contingency view of the organization and it contributes to the theme through two complementary perspectives. first, it proposes cognition as a function which acts as the main mediator between the organization and the environment. second, it introduces cognition as the core organizational ability which supports individuals, groups and organizations with intelligence, autonomy, learning and knowledge management, whereas, in such a perspective, cognition is viewed as the core resource in the service of the organization. both perspectives, the mediation and the core organizational resource views, imply that cognition contributes toward managing environmental complexity and uncertainty. from this picture, this work analyzes the organization in the pursuit of high degrees of organizational cognition in order to manage high levels of environmental complexity and uncertainty. grounded in these views, this paper presents a model of the organization as a set of fuzzy abilities. from all these backgrounds, this research opens new directions for future research on organizational abilities which subsume cognition, intelligence, autonomy, learning and knowledge management as important elements of organizational analysis.
Uma vis?o da empresa baseada em habilidades: contextos estratégicos e contingenciais
Nobre, Farley Simon;Tobias, Andrew M;Walker, David S;
Revista de Administra??o Contemporanea , 2011, DOI: 10.1590/S1415-65552011000300004
Abstract: this paper extends the corporation-based metaphor of the tree by proposing that cognition is the core ability which contributes to nourishing the development of core competencies in the organization. from such an extension, this paper takes a raises the following question: what is the role of cognition in the organization that is in the pursuit of core competencies and sustainable competitive advantage? this paper answers this problem by presenting two perspectives that contribute toward introducing the field of organizational cognition into the domains of the resource-based view and contingency. first, it proposes an ability-based view of the organization through analogies which are most associated with the concepts of the resource-based view and dynamic capabilities of the firm. second, it proposes a contingency-based view of organizational cognition which is most developed through causal relations and also deductive and inductive reasoning. grounded in these perspectives, this study sustains the thesis that cognition is a source of controlling environmental uncertainty and, complementarily, cognition contributes toward creating and sustaining the organization's competitive advantage.
A New Contingency View of the Organization: Mananging Complexity and Uncertainty Through Cognition
Farley Simon Nobre,Andrew M. Tobias,David S. Walker
BAR. Brazilian Administration Review , 2010,
Abstract: This paper proposes a new contingency view of the organization and it contributes to the theme through two complementary perspectives. First, it proposes cognition as a function which acts as the main mediator between the organization and the environment. Second, it introduces cognition as the core organizational ability which supports individuals, groups and organizations with intelligence, autonomy, learning and knowledge management, whereas, in such a perspective, cognition is viewed as the core resource in the service of the organization. Both perspectives, the mediation and the core organizational resource views, imply that cognition contributes toward managing environmental complexity and uncertainty. From this picture, this work analyzes the organization in the pursuit of high degrees of organizational cognition in order to manage high levels of environmental complexity and uncertainty. Grounded in these views, this paper presents a model of the organization as a set of fuzzy abilities. From all these backgrounds, this research opens new directions for future research on organizational abilities which subsume cognition, intelligence, autonomy, learning and knowledge management as important elements of organizational analysis.
Uma Vis o da Empresa Baseada em Habilidades: Contextos Estratégicos e Contingenciais
Farley Simon Nobre,Andrew M. Tobias,David S. Walker
Revista de Administra??o Contemporanea , 2011,
Abstract: This paper extends the corporation-based metaphor of the tree by proposing that cognition is the core ability which contributes to nourishing the development of core competencies in the organization. From such an extension, this paper takes a raises the following question: What is the role of cognition in the organization that is in the pursuit of core competencies and sustainable competitive advantage? This paper answers this problem by presenting two perspectives that contribute toward introducing the field of organizational cognition into the domains of the resource-based view and contingency. First, it proposes an ability-based view of the organization through analogies which are most associated with the concepts of the resource-based view and dynamic capabilities of the firm. Second, it proposes a contingency-based view of organizational cognition which is most developed through causal relations and also deductive and inductive reasoning. Grounded in these perspectives, this study sustains the thesis that cognition is a source of controlling environmental uncertainty and, complementarily, cognition contributes toward creating and sustaining the organization’s competitive advantage.
Dosisabh ngiger Anstieg von Knochenformatinsmarkern in Serum und Knochen unter Zink-Supplementation - eine Untersuchung an der erwachsenen weiblichen Maus
Dimai H-P,Farley J,Hall S,Leb G
Journal für Mineralstoffwechsel , 1998,
Abstract: Zink (Zn) ist eine essentielles Spurenelement. Es spielt eine wichtige Rolle in zahlreichen metabolischen Prozessen und wird auch für das normale Knochenwachstum ben tigt. Ziel der vorliegenden Untersuchung war es, den Effekt von Zn auf a) die Aktivit t der alkalischen Phosphatase (ALP) in Serum und Knochen, b) das Serum-Osteocalcin, c) die Tartrat-resistente saure Phosphatase (TRAP) im Knochen, sowie d) den Protein-Gehalt des Knochens darzustellen. Erwachsene weibliche Swiss-Webster-M use erhielten entweder eine Zn-freie Di t, oder eine Di t, welche einen normalen, oder einen 2-, 3-, 4-, oder 5-fach h heren Zn-Gehalt als die Normal-Di t hatte. Die Di t wurde für 2, 4, oder 6 Wochen verabreicht. Es zeigte sich eine positive Korrelation zwischen der Menge des mit der Nahrung aufgenommenen Zn und der Serum-ALP (4 und 6 Wochen, p 0,001), der tibialen ALP (2, 4 und 6 Wochen, p 0,03), sowie dem tibialen Protein (2,4 und 6 Wochen p 0.001); weiters zeigte sich eine negative Korrelation zwischen Zn und tibialer TRAP (2, 4 und 6 Wochen, p 0,001). Kovarianzanalysen zeigten überdies, da die Aktivit t der Serum-ALP, der tibialen ALP und der tibialen TRAP, sowie die Menge des tibialen Proteins sowohl durch die Zn-Dosis (p 0,005), als auch die Dauer der Therapie (p 0,03) beeinflu bar sind. Zn zeigte auch einen signifikanten Einflu auf den Serum-Osteocalcin-Spiegel (p 0,03 bei 3 x h her Zn-Menge als in der Normaldi t). In einer erg nzenden Studie zeigte sich auch, da Zn zu einem dosisabh ngigen Anstieg der ALP und des Proteins, und zu einem signifikanten Abfall der TRAP in murinen osteoblasten hnlichen MC3T3-E1 Zellen führt. Insgesamt kann aus den Ergebnissen der vorliegenden Studie geschlossen werden, da eine schrittweise Erh hung des Zn-Gehaltes der Nahrung zu einem entsprechenden Anstieg der ALP-Aktivit t von Serum und Knochen führt. Da in dieser Studie klar gezeigt werden konnte, da Zn auch zu einem Abfall der TRAP-Aktivit t in osteoblasten hnlichen Zellen führt, sollte künftighin ein Absinken der TRAP-Aktivit t im Knochen nicht als Zeichen einer Knochenresorptions-Hemmung interpretiert werden.
Benjamin Franklin and Colonial Money: A Reply to Michener and Wright—Yet Again
FARLEY GRUBB
Econ Journal Watch , 2006,
Abstract: Michener and Wright (2006c) repeat their ad hominem attack on me—repeat in that they offer little that is new or original. They simply rearrange and re-cloth their prior material and present it again. Much of their rearrangement consists of rhetorical games—clever attempts to mislead the reader without being de jure dishonest. As in my past replies (Grubb 2005, 2006a), I will present new research—crafted here to reveal Michener and Wright’s attacks yet again for what they really are.
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