Analysis of biuret in stockfoods using gel filtration

Biuret was separated from proteins and other interfering compounds by gel filtration with Sephadex G-10. Good recoveries and reproducible results were obtained with a wide variety of foods. Biuret was estimated colorimetrically by the standard Cu-biuret reaction

Cobalt concentrations in pasture species grown in several cattle grazing areas of Queensland

Cobalt concentrations were determined in several pasture species grown in five cattle grazing areas of Queensland. Dry matter cobalt levels were within the range 0.01 to 0.35 μg/g and were considerably higher in legumes than in grasses grown at the same location

Iodine value-refractive index correlation for Queensland grown soybean seed

Iodine values and corresponding refractive indices were obtained from varieties of Glycine max grown in Queensland, and a regression equation was derived for estimating iodine value from the measured refractive index

Evaluation of the potential to dispose of sewage-sludge. 2. Potential for off-site movements of solids and solutes

This paper reports a study of the potential for off-site movements of pollutants from sewage sludge broadcast onto the soil surface in Pinus plantations established on the coastal lowlands of south-east Queensland. Laboratory studies of size and settling velocity distributions of rainfall-wetted sludge showed that it is relatively coarse and non-erodible. Field rainfall simulation studies at three sites in pine forests near Beerburrum found no significant increase in interrill erosion due to broadcasting of sludge. (Most or all of the sediment was observed to come from mineral soil exposed when a gutter to collect runoff was installed at the downslope ends of the plots.) However, there was considerable movement of solutes in runoff from rainfall simulator plots that had received sludge-either freshly applied or 'consolidated' sludge (that had been broadcast on the plots 6 months prior to the rainfall simulation study and exposed to rain and weathering). Electrical conductivity (EC) of runoff from freshly applied sludge was initially high but decreased steadily during the 30 min rainfall event. Runoff from consolidated sludge had lower ECs, though significantly (P < 0.05) higher than those of runoff from control plots. Concentrations of nitrate-N and ammonium-N were initially high in runoff from freshly applied sludge, but decreased rapidly during the rainfall event. In contrast, concentrations of mineral N in runoff from consolidated sludge were low throughout the rainfall event. These results indicate a significant risk of off-site N pollution if runoff occurs during the first rains following broadcasting of sludge. By contrast, concentrations of total phosphorus, copper, and zinc in runoff from both fresh and consolidated sludge were relatively high, and showed only small decreases during the rainfall event applied. This suggests that sludge will contribute significant quantities of these elements to runoff for extended periods after broadcasting. The implications of these findings become important in terms of the timing and method of sludge application to the soil

Coercive redistribution and public agreement: re-evaluating the libertarian challenge of charity

In this article, we evaluate the capacity of liberal egalitarianism to rebut what we call the libertarian challenge of charity. This challenge states that coercive redistributive taxation is neither needed nor justified, since those who endorse redistribution can give charitably, and those who do not endorse redistribution cannot justifiably be coerced. We argue that contemporary developments in liberal political thought render liberalism more vulnerable to this libertarian challenge. Many liberals have, in recent years, sought to recast liberalism such that it is more hospitable to cultural, religious, and ethnic diversity. This move has resulted in increased support for the claim that liberalism should be understood as a political rather than comprehensive doctrine, and that liberal institutions should draw their legitimacy from agreements made among members of an appropriately conceived deliberative community, rather than from controversial liberal principles like individual autonomy. We argue that, while this move may indeed make liberalism more compatible with cultural diversity, it also makes it more vulnerable to the libertarian challenge of charity. Not all versions of liberalism are troubled by the challenge, but those that are troubled by it are increasingly dominant. We also discuss G. A. Cohen’s claim that liberal equality requires an ‘egalitarian ethos’ and argue that, if Cohen is right, it is difficult to see how there can be an adequate response to the libertarian challenge of charity. In general, our argument can be summarised as follows: the more that liberalism is concerned accurately to model the actual democratic wishes and motivations of the people it governs, the less it is able to justify coercively imposing redistributive principles of justice

Football in the community schemes: Exploring the effectiveness of an intervention in promoting healthful behaviour change

This study aims to examine the effectiveness of a Premier League football club’s Football in the Community (FitC) schemes intervention in promoting positive healthful behaviour change in children. Specifically, exploring the effectiveness of this intervention from the perspectives of the participants involved (i.e. the researcher, teachers, children and coaches). A range of data collection techniques were utilized including the principles of ethnography (i.e. immersion, engagement and observations), alongside conducting focus groups with the children. The results allude to the intervention merely ‘keeping active children active’ via (mostly) fun, football sessions. Results highlight the important contribution the ‘coach’ plays in the effectiveness of the intervention. Results relating to working practice (i.e. coaching practice and coach recruitment) are discussed and highlighted as areas to be addressed. FitC schemes appear to require a process of positive organizational change to increase their effectiveness in strategically attending to the health agenda

The G0 Experiment: Apparatus for Parity-Violating Electron Scattering Measurements at Forward and Backward Angles

In the G0 experiment, performed at Jefferson Lab, the parity-violating elastic scattering of electrons from protons and quasi-elastic scattering from deuterons is measured in order to determine the neutral weak currents of the nucleon. Asymmetries as small as 1 part per million in the scattering of a polarized electron beam are determined using a dedicated apparatus. It consists of specialized beam-monitoring and control systems, a cryogenic hydrogen (or deuterium) target, and a superconducting, toroidal magnetic spectrometer equipped with plastic scintillation and aerogel Cerenkov detectors, as well as fast readout electronics for the measurement of individual events. The overall design and performance of this experimental system is discussed.Comment: Submitted to Nuclear Instruments and Method

Measurement of νˉμ\bar{\nu}_{\mu} and νμ\nu_{\mu} charged current inclusive cross sections and their ratio with the T2K off-axis near detector

We report a measurement of cross section $\sigma(\nu_{\mu}+{\rm nucleus}\rightarrow\mu^{-}+X)$ and the first measurements of the cross section $\sigma(\bar{\nu}_{\mu}+{\rm nucleus}\rightarrow\mu^{+}+X)$ and their ratio $R(\frac{\sigma(\bar \nu)}{\sigma(\nu)})$ at (anti-)neutrino energies below 1.5 GeV. We determine the single momentum bin cross section measurements, averaged over the T2K $\bar{\nu}/\nu$-flux, for the detector target material (mainly Carbon, Oxygen, Hydrogen and Copper) with phase space restricted laboratory frame kinematics of $\theta_{\mu}$500 MeV/c. The results are $\sigma(\bar{\nu})=\left( 0.900\pm0.029{\rm (stat.)}\pm0.088{\rm (syst.)}\right)\times10^{-39}$ and $\sigma(\nu)=\left( 2.41\ \pm0.022{\rm{(stat.)}}\pm0.231{\rm (syst.)}\ \right)\times10^{-39}$in units of cm$^{2}$/nucleon and$R\left(\frac{\sigma(\bar{\nu})}{\sigma(\nu)}\right)= 0.373\pm0.012{\rm (stat.)}\pm0.015{\rm (syst.)}$.Comment: 18 pages, 8 figure

Materials and Devices of the Public: An Introduction

This introduction provides an overview of material- or device-centered approaches to the study of public participation, and articulates the theoretical contributions of the four articles that make up this special section. Set against the background of post-Foucaldian perspectives on the material dimensions of citizenship and engagement - perspectives that treat matter as a tacit, constituting force in the organization of collectives and are predominantly concerned with the fabrication of political subjects - we outline an approach that considers material engagement as a distinct mode of performing the public. The question, then, is how objects, devices, settings and materials acquire explicit political capacities, and how they serve to enact material participation as a specific public form. We discuss the connections between social studies of material participation and political theory, and define the contours of an empiricist approach to material publics, one that takes as its central cue that the values and criteria particular to these publics emerge as part of the process of their organization. Finally, we discuss four themes that connect the articles in this special section, namely their focus on 1) mundane technologies, 2) experimental devices and settings for material participation; 3) the dynamic of effort and comfort, and 4) the modes of containment and proliferation that characterize material publics