Restricted Participation on Financial Markets: A General Equilibrium Approach Using Variational Inequality Methods

Networks and Spatial Economics - We deal with the analysis of a general equilibrium model with restricted participation in financial markets and with numeraire assets. We consider an exchange...     

Book reviews

The Housing and Living Environment for Retired people in Australia. edited by Ross Thorne. Sydney: Hale & Iremonger. 1986. pp348 $A 29.95.

The Modern Urban Landscape. by Edward Relph. London: Croom Helm, 1987 pp279. £10.95.

Housing the Homeless. edited by Jon Erickson and Charles Wilhelm New Brunswick, New Jersey: Center for Urban Policy Research, Rutgers University. 1986. pp459. $19.95.

Cities: Special Issue: Shelter and Homelessness. Vol 4 No 1, February 1987. London: Butterworth. pp104.     

Deoxycholate‐Based Glycosides (DCGs) for Membrane Protein Stabilisation

Detergents are an absolute requirement for studying the structure of membrane proteins. However, many conventional detergents fail to stabilise denaturation‐sensitive membrane proteins, such as eukaryotic proteins and membrane protein complexes. New amphipathic agents with enhanced efficacy in stabilising membrane proteins will be helpful in overcoming the barriers to studying membrane protein structures. We have prepared a number of deoxycholate‐based amphiphiles with carbohydrate head groups, designated deoxycholate‐based glycosides (DCGs). These DCGs are the hydrophilic variants of previously reported deoxycholate‐based N‐oxides (DCAOs). Membrane proteins in these agents, particularly the branched diglucoside‐bearing amphiphiles DCG‐1 and DCG‐2, displayed favourable behaviour compared to previously reported parent compounds (DCAOs) and conventional detergents (LDAO and DDM). Given their excellent properties, these agents should have significant potential for membrane protein studies.     

Cross-Border Collaboration in River Management: Views on Participation in a Dutch-German Case Study

Integrated river basin management (IRBM) calls for participatory practices involving stakeholders along transnational river landscapes. Understanding the complex and diverse views regarding participation is a prerequisite for meaningful involvement of civil actors, especially in a transnational context. In a case study along the Lower Rhine river, we assessed and compared cognitive perceptions towards IRBM of citizen initiatives and nature organizations from Germany and the Netherlands and their previous experiences with participation processes.We found large differences between the four actor groups in motivations to participate as well as in levels of trust towards institutions. This study also showed different views on participation between the two countries with regard to the problem definition, nature images and the perceived relationships between government organisations on the one hand and citizen initiatives and nature organisations on the other hand.The findings suggest that views vary between citizen initiatives and nature organizations within a country and that cultural notions add to the complexity of transnational participation. In transnational participation processes, the varying views between actor groups should be taken into account, as well as the complexities among countries even within actor groups.     

Radio‐opaque fecal impaction and pseudo‐occlusion in a dialyzed patient taking lanthanum carbonate

Lanthanum therapy is an efficient therapy of hyperphosphoremia by chelating phosphore in the digestive tract. Lanthanum is a silvery white metallic element that belongs to group 3 of the periodic table. This drug is lightly absorbed and has low water solubility. It should be borne in mind that abdominal X‐rays of patients taking lanthanum carbonate may have a radio‐opaque appearance typical of imaging agents. This characteristic is suggested to confirm adherence of the patient by doing an abdominal X‐ray. We describe in our case a particular good compliant patient with slow digestive transit, which ends by pseudo‐occlusion.     

Iridium complexes incorporating coumarin moiety as catalyst photoinitiators: Towards household green LED bulb and halogen lamp irradiation

Household LED bulbs and halogen lamps are used to promote the ring-opening photopolymerization of epoxides in the presence of a new series of iridium(III) complexes (IrCs) exhibiting enhanced visible light absorption properties through the introduction of a coumarin moiety. These latter complexes are used as catalyst photoinitiators in an oxidative cycle in combination with a silane and an iodonium salt. Remarkably, even under the selected very soft irradiations (e.g. light intensity lower than 2 mW/cm²), excellent polymerization profiles are obtained (conversions > 80%). The mechanisms are investigated by ESR and luminescence experiments.     

Pulsatile Jet Cleaning of Filter Cloths Contaminated with Yeast Cells

The cleaning of filter cloths is necessary to avoid prolonged system downtime and strong fouling. Reliable cleaning concepts are central to the removal of residues from the complex surface of filter cloths. Particle residues, in particular, play a decisive role in the sufficiency of the cleaning performance. Consequently, enhanced particle‐removal cleaning concepts based on pulsatile jets for filter cloths have been developed. By varying the cleaning parameters, it has been demonstrated that increased pulse numbers and velocities improve the cleaning performance. Furthermore, this promising cleaning concept cleaned more effectively than conventional methods. The reduction in the amount of detergent needed is an ecological and economic advantage of pulsatile cleaning.     

Starch retrogradation and its impact on nutritional starch fractions in plantain (<Emphasis Type="Italic">Musa AAB</Emphasis>) foods

Starch retrogradation in plantain starch was studied by an enzymatic method and X-ray diffraction analysis. The enzymatic method and X-ray diffraction gave comparable results. Retrograded starch (RS3) and physically trapped starch (RS1) contents of plantain foods were subsequently determined by the enzymatic method. RS3 content of 5.0 ± 0.9 to 13.2 ± 3.0 g/100 g dry weight basis was obtained for unripe samples while a value ranging from 0.9 ± 0.4 to 2.5 ± 0.9 g/100 g was obtained for ripe samples. Retrogradation increased slowly digestible starch (SDS) and physically inaccessible starch (RS1) portions in some of the samples but not in others. Retrogradation resulted in an increase in the quantity of SDS for ripe plantain samples. In unripe plantain samples cooked without salt, there was a significant increase (p ≤ 0.05) in the value of RS1 from 4.6 ± 3.6 to 7.7 ± 2.0 g/100 g after 48 h of cold storage but no significant change for samples cooked with salt.     

An ecological analysis of research examining the experiences of students of color in graduate school.

This article critically reviews methodologies and theoretical orientations of 27 published empirical studies examining the graduate school experiences of students of color using Bronfenbrenner's (1979, 1994) bioecological model. Despite the urgent need for evidence-based approaches to increase the number of scholars of color, the findings in this review indicate an inadequate number of studies explaining how to realize that goal. Furthermore, much of the existing literature examined individual-level characteristics rather than how environmental factors benefit students. Specific recommendations for future ecological research are provided. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Effect of Bismuth Nanotubes on the Thermoelectric Properties of BiSb Alloy Nanocomposites

Bismuth nanotubes have been synthesized and successfully included in Bi_1?x Sb _x nanoalloys to form composite structures. The nanotubes were synthesized by transformation of a β-BiI precursor with n-BuLi solution leading to tubular bismuth structures. The Bi_1?x Sb _x nanoalloys were produced by ball milling. Three series of composite structures were synthesized by including different fractions (0 wt.%, 3 wt.%, 5 wt.%) of nanotubes in nanoalloys of different composition x. Investigation of thermoelectric and structural properties revealed a decrease of the thermal conductivity of up to 40% for the composites in comparison with alloys without nanotube inclusions. This effect can be attributed to enhanced phonon scattering. Seebeck coefficients and electrical conductivities were both slightly enhanced in the composite series with 3 wt.% nanotube inclusions, leading to enhancement of $$ ZT \ \left(ZT=\frac {(S^2 \sigma)}{\kappa}\,{ {T}}\right) $$ throughout the series compared with the nanoalloy series without nanotube inclusions.