A preliminary check-list of the Chalcidoidea (Hymenoptera) of the Maltese Islands

A list of 147 species of Chalcidoidea from the Maltese Islands is presented 73 of which are here reported for the first time from this territory. They belong to 15 families as follows: Agaonidae (3); Aphelinidae (20 including 3 new records); Azotidae (1 new record); Chalcididae (3 new records); Encyrtidae (23 including 13 new records); Eulophidae (35 including 19 new records); Eupelmidae (7 including 2 new records); Eurytomidae (5 including 4 new records); Leucospidae (4); Mymaridae (2); Ormyridae (1 new record); Pteromalidae (33 including 21 new records); Signiphoridae (2); Tetracampidae (1 new record); Torymidae (7 including 5 new records). Out of the 73 new records, 55 were exclusively found in Malaise trap samples at Verdala Palace near Buskett, a semi-natural wooded area dominated by Pinus halepensis. Thirty species mentioned in the present study were reared from plant-galls, either during the present study or in former studies pertaining to Malta. Of these 8 are gall inducers and the rest are primary or secondary parasitoids of the gall inducers. This list must represent only a small proportion of the actual species richness expected to be found in the Maltese Islands since absolutely no field work was carried out in other diverse and potentially rich habitats, such as steppe, garigue, maquis, coastal habitats and valley systems, present on these islands.peer-reviewe

Saltbush-associated Asphondylia species (Diptera: Cecidomyiidae) in the Mediterranean Basin and their chalcidoid parasitoids (Hymenoptera: Chalcidoidea)

Numerous species of gall midges (Diptera: Cecidomyiidae) have been recorded from saltbush (Chenopodiaceae: Atriplex) around the world but only 11 of them belong to the large cecidomyiid genus Asphondylia. Of these, two species were de-scribed in the late 19th century from complex bud galls on Atriplex halimus in the Mediterranean Basin. In the present study Asphondylia punica is redescribed, A. conglomerata is synonymized with it, and Asphondylia scopuli is described from Atriplex lanfrancoi, an endemic plant to the Maltese Islands. Descriptions are accompanied by information about the galls and life history of the gall midges, and a review of the parasitic Hymenoptera associated with A. scopuli is provided. Four species of parasitoids were found and attributed to the families Eurytomidae, Pteromalidae, Eupelmidae and Eulophidae, of which the pteromalid Mesopolobus melitensis is described as new.peer-reviewe

Child Feeding Practices of WIC Participants in Gwinnett County, Georgia

Mothers of low socioeconomic status are less likely to breastfeed and more likely to formula feed. In addition, low socioeconomic status is associated with a premature introduction of cow’s milk, juice and solid foods. Negative outcomes such as asthma, diabetes and obesity later in life may result from improper child feeding practices. The aim of this study was to determine if WIC participants in Gwinnett County, Georgia are practicing child feeding recommendations set forth by the American Academy of Pediatrics (AAP) as well as following the Division of Responsibility in feeding developed by Ellyn Satter. Ninety-six WIC participants (92% mothers) primarily African American (39%) and Hispanic (35%) from Gwinnett County, Georgia were surveyed in March of 2011. Participants completed one of three surveys based on their method of feeding (breastfeeding, formula feeding or solid foods) after a nutrition education class. Compliance to feeding recommendations was determined among the entire survey population and by survey subgroups. Frequency distributions by method of feeding were calculated by age and race. Trends in feeding practices and the feeding environment were determined. Ten percent of participants surveyed reported breastfeeding, 22% reported formula feeding and 68% reported feeding solid foods. Participants who were not following AAP guidelines reported that they received advice primarily from health care professionals. Our results are consistent with previous research in that breastfeeding rates were low, the introduction of solids was early, and caregivers reported controlling feeding behaviors. Future research should focus on understanding the child feeding practices and beliefs of health care professionals

Silicon device performance measurements to support temperature range enhancement

Semiconductor power devices are typically rated for operation below 150 C. Little data is known for power semiconductors over 150 C. In most cases, the device is derated to zero operating power at 175 C. At the high temperature end of the temperature range, the intrinsic carrier concentration increases to equal the doping concentration level and the silicon behaves as an intrinsic semiconductor. The increase in intrinsic carrier concentration results in a shift of the Fermi level toward mid-bandgap at elevated temperatures. This produces a shift in devices characteristics as a function of temperature. By increasing the doping concentration higher operating temperatures can be achieved. This technique was used to fabricate low power analog and digital devices in silicon with junction operating temperatures in excess of 300 C. Additional temperature effects include increased p-n junction leakage with increasing temperature, resulting in increased resistivity. The temperature dependency of physical properties results in variations in device characteristics. These must be quantified and understood in order to develop extended temperature range operation

Maturing on a High: An Analysis of Trends, Prevalence and Patterns of Recreational Drug Use in Middle and Older Adulthood.

Lately, we have witnessed how recreational drug use is extending further into adulthood than has traditionally been the case. Some young adults appear to be taking their recreational drug use with them into middle and older adulthood and in other cases drug use is initiated in later life. Analysing survey data from America, Australia, and England and Wales this chapter summarizes the extent of and trends in adult recreational drug use. In doing so, it is argued that many adults are drug experienced and a substantial minority are continuing to take drugs as they grow older. The trend in recent drug use for many adults aged 30 and over is upward. The chapter considers some explanations for these findings drawing on the concept of a cohort replacement effect, critiquing the notion of maturing out from drug use and, in turn, appreciating the nature and functions of recreational drug use in adulthood. The authors argue that the experiences of adult recreational drug users are under-researched and suggest future research agendas and ways to access adult populations. The chapter concludes with a discussion of public health and human rights concerns