The confused flour beetle, Tribolium confusum Jacquelin du Val (Coleoptera: Tenebrionidae) is a stored-product pest that contaminates a wide range of food products, from flour and cereals to spices. The insect reduces food quality and is responsible for large economic losses every year. Although several methods for detection of stored-product pests are common and widely used, they are time-cons...

Millions of blood products are transfused every year; many lives are thus directly concerned by transfusion. The three main labile blood products used in transfusion are erythrocyte concentrates, platelet concentrates and fresh frozen plasma. Each of these products has to be stored according to its particular components. However, during storage, modifications or degradation of those components ...

Carbonyl sulfide (COS) is a potential new fumigant for stored products, patented worldwide by CSIRO Australia. It may replace methyl bromide for many applications on durable commodities and be used as an alternative to phosphine when there is a significant problem with insect resistance. Laboratory and field studies have shown that COS is effective on a wide range of pests at all life stages, a...

Lentinan, a ß-(1→3)-D-glucan isolated from the common edible mushroom, Lentinula edodes (Shiitake), is a biologically active macromolecule with a potential medical application towards immune functions. The immunomodulatory activities of ß-glucans depends on their degree of branching, conformation and the interand intra-molecular association of the polysaccharide. Up to now, there is a lack of u...

Biological control using hymenopteran parasitoids presents an attractive alternative to insecticides for reducing infestations and damage from the Indianmeal moth, Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae), in retail and warehouse environments. We examined the potential for using combinations of the egg parasitoid Trichogramma deion Riley (Hymenoptera: Trichogrammatidae), and the ...

introduction: linguatula serrata is a zoonotic parasite, belonging to the class pentastomida. the major aim of this study was to evaluate the impact of sodium chloride (nacl) and heat on survival time of linguatula serrata nymphs. materials & methods: thirty nymphs (10 in triplicate) were separately transferred to plastic tubes, containing different concentrations of nacl solution (2%, 5% and 1...

Ubiquitous information access becomes more and more important nowadays and research is aimed at making it adapted to users. Our work consists in applying machine learning techniques in order to adapt the information access provided by ubiquitous systems to users when the system only knows the user social group, without knowing anything about the user’s interest. The adaptation procedures associ...

Purified sphingosine was resolved into dihydrosphingosine, sphingosine, and a fast-moving component by thin-layer chromatography on Silica Gel G. The fast-moving component was generated by the adsorbent, and consisted of a mixture of the cationic forms of dihydrosphingosine and sphingosine. Other sphingosine derivatives gave rise to similar artifacts. Sphingosine formed two degradation products...