A partial solution of the isoperimetric problem for the Heisenberg group

We provide a partial solution to the isoperimetric problem in the Heisenberg group.Comment: 32 pages, 1 figur

PRODUCTION AND SUPPLY CHAIN OF SAFE VEGETABLES IN HUONG TRA TOWN, THUA THIEN HUE PROVINCE

Abstract: On the basis of descriptive statistical methods, the authors describe the supply chain of safe vegetables in Huong Tra Town. The primary data were collected from the survey of six households providing vegetable production in the region. 40 households growing safe vegetables (20 households per ward), 40 households growing vegetables normally (20 households per ward), 10 traders purchasing processed products to provide safe vegetables for supermarkets, 5 retailers, and 10 consumers are involved in the study. The results show that Huong Tra Town is one of the main areas for growing vegetables in Thua Thien Hue province, which mainly provides safe vegetables for Hue City and neighbouring provinces. Safe vegetable products are mainly supplied for the markets in the province, especially supermarkets, restaurants, hotels and clean vegetable shops in Huong Tra Town and Hue City. In this supply chain, safe vegetable households play an important role when creating the greatest added-value. However, their real income is low due to facing the highest risks. Other actors in this supply chain receive higher benefits and facing lower risks than the producers. Households’ income depends mainly on the price and weather conditions.Keywords: safe vegetables, supply chain, Huong Tra Tow

Communication intercellulaire et infections microbiennes / Intercellular communication and microbial infections

Recherche Au cours des deux dernières décennies, il est devenu évident que, comme décrit pour les cellules eucaryotes, la sous-localisation des protéines dans les bactéries joue un rôle clé dans leur fonction ou leur régulation spatiotemporelle [1, 2]. Cependant, contrairement aux cellules eucaryotes, les bactéries ne contiennent pas de membranes intracellulaires délimitant les compartiments internes. Ainsi, la localisation des protéines bactériennes repose sur d’autres mécanismes encore mal ..