Influence of boundary conditions on bulk properties of six-vertex model

We study the influence of boundary conditions on the entropy of the six-vertex model. We consider the case of fixed boundary conditions in order to argue that the entropy of the six-vertex model vary continuously from its value for ferroelectric to periodic boundary conditions. This is done by merging the ferroelectric boundary and the N\'eel boundary.Comment: 13 page

Climate Justice Partnership Linking Universities and Community Organizations in Toronto, Durban, Maputo and Nairobi

This paper describes a project based at York University in Toronto, funded through the Climate Change Adaptation in Africa program of the International Development Research Centre and the UK Department for International Development (DFID), which is working to increase the participation of marginalized groups, especially women, in urban water governance.Students and faculty members from the University of Nairobi, Kenya; Eduardo Mondlane University in Maputo, Mozambique; and the University of KwaZulu-Natal in Durban, South Africa are working with civil society organizations in the three cities and with York University researchers to show how organizing in local communities can help the vulnerable to deal with climate change.As people in marginalized communities begin to address collectively the impacts of climate change, this summons political attention and allows those with direct experience to influence government policy. Civil society organizations, with support from local and international faculty and students, facilitate and focus this activism. University students help to document the NGOs’ work during internships with the NGOs. They also learn community development skills and make contacts. Faculty members publish and disseminate ideas about grassroots climate change adaptation and resulting political responses through presentations, publications and the project’s website (www.ccaa.irisyorku.ca)This research was supported by the International Development Research Centre, grant numbe

Monoamniotic twins discordant for body stalk anomaly

Body stalk anomaly is a rare malformation. This anomaly in monozygotic twins is extremely unusual. We describe a case of monoamniotic pregnancy discordant for body stalk anomaly diagnosed at 11 weeks. Ultrasound showed a fetus with a large anterior abdominal wall defect, anomaly of the spine and no evidence of lower extremities and other with a normal morphology. As far as our concern, only three monoamniotic pregnancies discordant for this malformation were reported. Our case represents the fourth reported monoamniotic pregnancy discordant for body stalk anomaly with diagnosis made by ultrasound and the second diagnosed in the first trimester

Recursos produtivos e potencialidade agroindustrial dos tabuleiros costeiros sergipanos.

Características gerais do desenvolvimento do nordeste; Características gerais de desenvolvimento de Sergipe; Estrutura e evolução recente dos tabuleiros costeiros de sergipe.bitstream/item/43741/1/CPATC-DOCUMENTOS-14-RECURSOS-PRODUTIVOS-E-POTENCIALIDADE-AGROINDUSTRIAL-DOS-TABULEIROS-COSTEIRO.pd

Impacts of in vivo and in vitro exposures to tamoxifen: comparative effects on human cells and marine organisms

Tamoxifen (TAM) is a first generation-SERM administered for hormone receptor-positive (HER+) breast cancer in both pre- and post-menopausal patients and may undergo metabolic activation in organisms that share similar receptors and thus face comparable mechanisms of response. The present study aimed to assess whether environmental trace concentrations of TAM are bioavailable to the filter feeder M. galloprovincialis (100 ng L-1) and to the deposit feeder N. diversicolor (0.5, 10, 25 and 100 ng L-1) after 14 days of exposure. Behavioural impairment (burrowing kinetic), neurotoxicity (AChE activity), endocrine disruption by alkali-labile phosphate (ALP) content, oxidative stress (SOD, CAT, GPXs activities), biotransformation (GST activity), oxidative damage (LPO) and genotoxicity (DNA damage) were assessed. Moreover, this study also pertained to compare TAM cytotoxicity effects to mussels and targeted human (i.e. immortalized retinal pigment epithelium - RPE; and human transformed endothelial cells - HeLa) cell lines, in a range of concentrations from 0.5 ng L-1 to 50 μg L-1. In polychaetes N. diversicolor, TAM exerted remarkable oxidative stress and damage at the lowest concentration (0.5 ng L-1), whereas significant genotoxicity was reported at the highest exposure level (100 ng L-1). In mussels M. galloprovincialis, 100 ng L-1 TAM caused endocrine disruption in males, neurotoxicity, and an induction in GST activity and LPO byproducts in gills, corroborating in genotoxicity over the exposure days. Although cytotoxicity assays conducted with mussel haemocytes following in vivo exposure was not effective, in vitro exposure showed to be a feasible alternative, with comparable sensitivity to human cell line (HeLa).info:eu-repo/semantics/publishedVersio

Profile aromatic of essential oil of ginger (Zingiber officinale var. grand cayman) grown in the region of Chinantla

Ginger (Zingiber officinale) is a rhizome native to Asia. In "The Chinantla" region of Oaxaca, Mexico is being cultivated ginger of Grand Cayman variety with high production. The rhizome of ginger is very aroma1tiic, spicy flavor and smell. The main form of ginger marketing is ~n fresh, dehydrated fla1kes and powder, oleoresin and essential oil. The aim of this project was to evaluate the aromatic profile by GC/MS of the essential oil of fresh and dehydrated ginger rhizome cultivated in the region of "The Chinantla".(Résumé d'auteur