Search results for "Tuni"

An effective opportunistic maintenance policy for a global service

2010

The aim of the present paper is to develop a model for an effective maintenance policy with refer to a global service contract between a services provider company and a company for the waste management. The contract requires, with fixed performance levels of the service, the supplying of a mandatory set of maintenance services on a set of waste compactors vehicles of the outsourcer company. In particular, the service provider (SP) must perform corrective maintenance actions and the replacement of the fault parts. The tackled problem concerns the determination of an effective opportunistic maintenance policy in order to assure the required service performance levels at the minimum global mai…

Does service quality matter in measuring the performance of water utilities?

2008

Abstract Quality is a dimension of water services that has been repeatedly omitted in the study of performance of water utilities. In this paper, Data Envelopment Analysis techniques are used to compute both conventional quantity-based and quality-adjusted scores of technical efficiency for a sample of Spanish water utilities. The key assumptions are that a lack of quality (bad quality) can be regarded as a bad output and the existence of a trade-off between quantity and quality. Our main results indicate that quality matters in measuring technical efficiency, the difference between conventional and quality-adjusted evaluations representing the opportunity cost of maintaining quality. Avera…

FIRST RECORD IN TUNISIA OF CLOSTEROCERUS CHAMAELEON (GIRAULT) PARASITOID OF THE EUCALYPTUS GALLWASP OPHELIMUS MASKELLI (ASHMEAD) (Hymenoptera Eulophi…

2010

Closterocerus chamaeleon (Girault) (Hymenoptera Eulophidae), parasitoid of the Eucalyptus gall wasp Ophelimus maskelli (Ashmead) (Hymenoptera Eulophidae) has been recorded for the first time in Tunisia in July 2007. This record suggests that 14 months after its release in Sicily, in May 2006, it has spread over Sicily Channel.

First Record of Leptocybe invasa and Ophelimus maskelli Eucalyptus Gall Wasps in Tunisia

2010

Two Australian gall wasps were detected for the first time in Tunisia on the foliage of Eucalyptus camaldulensis trees. Leptocybe invasa was detected in 2004, while Ophelimus maskelli in 2006. L. invasa makes galls on petioles, leaf midribs and young branches whereas O. maskelli induces galls on limbs. Vigilance is recommended when seedlings are carried to plantation.

ORTHOPTERA RACCOLTI IN TUNISIA NEL XIX SECOLO E CONSERVATI NEL MUSEO CIVICO DI STORIA NATURALE “G. DORIA” DI GENOVA.

1998

Reports (1838-1839), in: Kamari G, Blanché C, Silijak-Yakovlev S (eds.) Mediterranean chromosome number reports - 24

2014

Checklist of the vascular plants collected during the 12th “Iter Mediterraneum” in Tunisia, 24 March – 4 April 2014

2015

The vascular plants (plus one alga) collected during Iter Mediterraneum XII of OPTIMA in North Tunisia have been studied. In all, 1374 gatherings were made from 43 localities in the “Cap Bon” region, “Dorsale Tunisienne”, “Tunisie du Nord-Est”, “Vallée de la Medjedah”, “Mogods” and “Kroumirie” areas. They belong to 82 families and 539 species or subspecies. Three taxa are new for the flora of Tunisia (Cerastium diffusum subsp. gussonei, Senecio leucanthemifolius subsp. mauritanicus, and Ulmus minor subsp. canescens), 7 represent new records for the “Kroumirie”, 15 for the “Mogods”, 3 for the “Tunisie du Nord-Est”, 2 for the “Dorsale Tunisienne”, and 8 for “Cap Bon”

Relazioni genetiche e filogeografiche tra popolamenti di Ambrosina bassii L. (Araceae, Ambrosineae) nel mediterraneo centrale

2010

Hyacinthoides kroumiriensis sp.nov. (Hyacinthaceae): a new species from North West of Tunisia

2014

Hyacinthoides kroumiriensis El Mokni, Domina, Sebei& El Aouni, a new species in Hyacinthaceae from Kroumiria region, North West of Tunisia, is described and illustrated. Morphological characteristics with illustrations, habitat and description of the new species are provided, in addition to a diagnostic comparison with one phenotypically similar species within the same clade.

Macromycetes' diversity in Tunisia

2017

In Tunisia, about 12% of the country area is covered by forests which have favorable climatic factors likely to harbor a high macrofungal biodiversity. However, this valuable bioresource remains understudied especially regarding their distribution, ecology, abundance and diversity. The initiation of the first national inventory of macrofungi in NorthWestern Tunisian forests was published by our group in 2016. The study covered six governorates, sixty seven sites and enabled the identification of one hundred and twenty-three specimens. Abiotic environmental factors such (as bioclimatic stage, rainfall and edaphic conditions) and biotic factors (plant association and nature and density of the…