Galvez F.J.,CSIC - Experimental Station of El Zaidin |
Baghour M.,CSIC - Experimental Station of El Zaidin |
Baghour M.,Premier University |
Hao G.,CSIC - Experimental Station of El Zaidin |
And 4 more authors.
Plant Physiology and Biochemistry | Year: 2012
In general, wild tomato species are more salt tolerant than cultivated species, a trait that is related to enhanced Na + accumulation in aerial parts in the wild species, but the molecular basis for these differences is not known. Plant NHX proteins have been suggested to be important for salt tolerance by promoting accumulation of Na + or K + inside vacuoles. Therefore, differences in expression or activity of NHX proteins in tomato could be at the basis of the enhanced salt tolerance in wild tomato species. To test this hypothesis, we studied the expression level of four NHX genes in the salt sensitive cultivated species Solanum lycopersicum L. cv. Volgogradskij and the salt tolerant wild species Solanum pimpinelifolium L in response to salt stress. First, we determined that in the absence of salt stress, the RNA abundance of LeNHX2, 3 and 4 was comparable in both species, while more LeNHX1 RNA was detected in the tolerant species. LeNHX2 and LeNHX3 showed comparable expression levels and were present in all tissues, while LeNHX4 was expressed above all in stem and fruit tissues. Next, we confirmed that the wild species was more tolerant and accumulated more Na + in aerial parts of the plant. This correlated with the observation that salt stress induced especially the LeNHX3 and LeNHX4 isoforms in the tolerant species. These results support a role of NHX genes as determinants of salt tolerance in tomato, inducing enhanced Na + accumulation observed in the wild species when grown in the presence of NaCl. © 2011 Elsevier Masson SAS.
Iassinovskaia G.,Catholic University of Louvain |
Limbourg S.,HEC School of Management |
Riane F.,Premier University
International Journal of Production Economics | Year: 2016
Reducing environmental impact, related regulations and potential for operational benefits are the main reasons why companies share their returnable transport items (RTIs) among the different partners of a closed-loop supply chain. In this paper, we consider a producer, located at a depot, who has to distribute his products packed in RTIs to a set of customers. Customers define a time window wherein the service can begin. The producer is also in charge of the collection of empty RTIs for reuse in the next production cycle. Each partner has a storage area composed of both empty and loaded RTI stock, as characterized by initial levels and maximum storage capacity. As deliveries and returns are performed by a homogeneous fleet of vehicles that can carry simultaneously empty and loaded RTIs, this research addresses a pickup and delivery inventory-routing problem within time windows (PDIRPTW) over a planning horizon. A mixed-integer linear program is developed and tested on small-scale instances. To handle more realistic large-scale problems, a cluster first-route second matheuristic is proposed. © 2016 Elsevier B.V.
Benhaddou H.,Premier University
Medecine et Chirurgie du Pied | Year: 2013
Hallux varus is a forefoot deformity consisting of medical deviation of the first metatarsophalangeal joint. The congenital form is rare and occurs in some malformative or syndromic conditions. According to its origin, the management is different. We report a case of a 9-year-old boy with congenital hallux varus neglected since childhood. The surgical procedure is described. An aesthetically acceptable, painfree and functionally adequate foot was achieved. We present here the literature data. © 2013 Springer-Verlag France.
Iqbal S.M.A.,Premier University
Proceeding of the 15th International Conference on Computer and Information Technology, ICCIT 2012 | Year: 2012
Delivering message in Delay Tolerant Networks is challenging due to its sparse nature and intermittent connectivity. Therefore efficient routing is very important for these networks. Here, we focus on the Spray and Wait routing schemes for Delay Tolerant Networks to avoid identical spraying technique and blind forwarding by mobile nodes. To avoid those problems, we first define an adaptive spraying scheme based on the delivery predictability of nodes. We then formulate an equation based on the number of remaining copies of messages to select a specific spraying technique each time. Thus, we propose to employ multiple spraying techniques during the spray phase of our scheme. Simulation results show that our Multischeme Spray and Wait routing performs better in different network scenarios. © 2012 IEEE.
Loaney D.,Premier University
Conference Proceedings from the International Symposium for Testing and Failure Analysis | Year: 2012
Counterfeiting of electronic components continues to be an evolving issue that greatly impacts many companies around the globe. And with so many initiatives that have either been enacted or are in the works, there is a significant amount of confusion and even fear in our industry. The financial impact and potential loss of life related to counterfeit components has become so great that an enormous amount of attention is now being devoted to identifying and mitigating this risk by both private industry and governments agencies around the world. Many companies are reaching out to test labs for both the testing of their components and direction on how to address some of these issues. This paper addresses a few of the questions that our lab is getting from some of our customers regarding counterfeit IC's and how we have answered those questions. The goal is to provide some additional insight to allow others to address this issue proactively and without fear. Copyright © 2012 ASM International® All rights reserved.