1,635 research outputs found
Life at school in Australia and Japan: the impact of stress and support on bullying and adaptation to school
In this international, comparative study, path analysis was used to examine eight different aspects of Japanese and Australian students' experiences of school life in relation to their effect on adaptation to school. Adaptation was constructed to include information on enjoyment of school, feelings of belonging to school, and relationships with other students. Two separate path models were tested to compare questionnaire data from over 3000 Australian and 6000 Japanese students across Years 5-10. The questionnaire was developed collaboratively by the authors to examine issues of common concern in both countries. Issues that related to the impact on adaptation to school of stress and support: family teachers, peers and school work, as well as bullying were of particular interest. Lack of support and the influential effect of stress were found to exert direct negative effects on adaptation to school, especially for high school students in Japan and Australia. The path results also confirmed the stressful effects of bullying in both countries. The finding of a strong relationship between bullying others and being victimised is discussed in the paper. Finally, the differences and similarities between Japanese and Australian students' perceptions of school life are extrapolated
Kinetic Model for Solute Diffusion in Liquid Membrane Systems
In this study, a mathematical model for the kinetics of solute transport in liquid membrane systems (LMSs) has been formulated. This model merged the mechanisms of consecutive and reversible processes with a “semi-derived” diffusion expression, resulting in equations that describe solute concentrations in the three sections (donor, acceptor and membrane). These equations have been refined into linear forms, which are satisfying in the special conditions for simplification obtaining the important kinetic constants of the process experimentally
Surface Operator, Bubbling Calabi-Yau and AGT Relation
Surface operators in N=2 four-dimensional gauge theories are interesting
half-BPS objects. These operators inherit the connection of gauge theory with
the Liouville conformal field theory, which was discovered by Alday, Gaiotto
and Tachikawa. Moreover it has been proposed that toric branes in the A-model
topological strings lead to surface operators via the geometric engineering. We
analyze the surface operators by making good use of topological string theory.
Starting from this point of view, we propose that the wave-function behavior of
the topological open string amplitudes geometrically engineers the surface
operator partition functions and the Gaiotto curves of corresponding gauge
theories. We then study a peculiar feature that the surface operator
corresponds to the insertion of the degenerate fields in the conformal field
theory side. We show that this aspect can be realized as the geometric
transition in topological string theory, and the insertion of a surface
operator leads to the bubbling of the toric Calabi-Yau geometry.Comment: 36 pages, 14 figures. v2: minor changes and typos correcte
Fc receptor gamma-chain, a constitutive component of the IL-3 receptor, is required for IL-3-induced IL-4 production in basophils
ArticleNATURE IMMUNOLOGY. 10(2):214-222 (2009)journal articl
Correlation between apoptosis and left ventricular remodeling in subacute phase of myocardial ischemia and reperfusion
Measurement of forward neutral pion transverse momentum spectra for = 7TeV proton-proton collisions at LHC
The inclusive production rate of neutral pions in the rapidity range greater
than has been measured by the Large Hadron Collider forward (LHCf)
experiment during LHC \,TeV proton-proton collision operation in
early 2010. This paper presents the transverse momentum spectra of the neutral
pions. The spectra from two independent LHCf detectors are consistent with each
other and serve as a cross check of the data. The transverse momentum spectra
are also compared with the predictions of several hadronic interaction models
that are often used for high energy particle physics and for modeling
ultra-high-energy cosmic-ray showers.Comment: 18 Pages, 10 figures, submitted to Phys. Rev.
Low Cost Approach to Energy Efficient Buildings in Nigeria: A Review of Passive Design Options
Energy consumption in buildings accounts for approximately 45% of the world’s total energy consumption, leading to a significant proportion of greenhouse gas emissions. This has led to an increasing effort towards reducing energy consumption. An example of such efforts is energy efficient buildings using passive design options. This paper assesses a low cost energy efficient strategy approach to achieving energy efficiency in buildings using passive design options in Nigeria. A critical review of various passive design options and their roles in reducing energy consumption in buildings will be conducted. This approach is necessary due to energy poverty, high energy cost, erratic power supply, over dependence on electrical generators for indoor thermal comfort and other factors. Research has shown that this method can reduce energy consumption in buildings by 40%-60% in comparison to conventional buildings. This paper shows that there is an urgent need for professionals in the building industry as well as other stakeholders to advocate passive design options in Nigeria as a viable step towards achieving high energy performance buildings. This paper concludes by emphasizing the need for Nigeria to start with a low cost energy approach to achieve energy efficient buildings in the short term while aiming for ultra-low energy buildings in the long term
Single- and few-layer graphene growth on stainless steel substrates by direct thermal chemical vapor deposition
Steeping interest on graphene research in basic sciences and applications
emphasizes the need for an economical means of synthesizing it. We report a
method for the synthesis of graphene on commercially available stainless steel
foils using direct thermal chemical vapor deposition. Our method of synthesis
and the use of relatively cheap precursors such as ethanol (CH3CH2OH) as a
source of carbon and SS 304 as the substrate, proved to be economically viable.
Presence of single- and few-layer graphene was confirmed using confocal Raman
microscopy/spectroscopy. X-ray photoelectron spectroscopic measurements were
further used to establish the influence of various elemental species present in
stainless steel on graphene growth. Role of cooling rate on surface migration
of certain chemical species (oxides of Fe, Cr and Mn) that promote or hinder
the growth of graphene is probed. Such analysis of the chemical species present
on the surface can be promising for graphene based catalytic research
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