4,283 research outputs found

    Some new records of hymenopterous parasitoids for Florida

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    Some new records of hymenopterous parasitoids for Florid

    Hymenopteran parasitoids associated with spiders In Florida

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    Five different parasitoid species associated with spiders are reported from collections made in Florida and Georgia

    The beginnings of geography teaching and research in the University of Glasgow: the impact of J.W. Gregory

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    J.W. Gregory arrived in Glasgow from Melbourne in 1904 to take up the post of foundation Professor of Geology in the University of Glasgow. Soon after his arrival in Glasgow he began to push for the setting up of teaching in Geography in Glasgow, which came to pass in 1909 with the appointment of a Lecturer in Geography. This lecturer was based in the Department of Geology in the University's East Quad. Gregory's active promotion of Geography in the University was matched by his extensive writing in the area, in textbooks, journal articles and popular books. His prodigious output across a wide range of subject areas is variably accepted today, with much of his geomorphological work being judged as misguided to varying degrees. His 'social science' publications - in the areas of race, migration, colonisation and economic development of Africa and Australia - espouse a viewpoint that is unacceptable in the twenty-first century. Nonetheless, that viewpoint sits squarely within the social and economic traditions of Gregory's era, and he was clearly a key 'Establishment' figure in natural and social sciences research in the first half of the twentieth century. The establishment of Geography in the University of Glasgow remains enduring testimony of J.W. Gregory's energy, dedication and foresight

    Sleep Environment Recommendations for Future Spaceflight Vehicles

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    Current evidence demonstrates that astronauts experience sleep loss and circadian desynchronization during spaceflight. Ground-based evidence demonstrates that these conditions lead to reduced performance, increased risk of injuries and accidents, and short and long-term health consequences. Many of the factors contributing to these conditions relate to the habitability of the sleep environment. Noise, inadequate temperature and airflow, and inappropriate lighting and light pollution have each been associated with sleep loss and circadian misalignment during spaceflight operations and on Earth. As NASA prepares to send astronauts on long-duration, deep space missions, it is critical that the habitability of the sleep environment provide adequate mitigations for potential sleep disruptors. We conducted a comprehensive literature review summarizing optimal sleep hygiene parameters for lighting, temperature, airflow, humidity, comfort, intermittent and erratic sounds, and privacy and security in the sleep environment. We reviewed the design and use of sleep environments in a wide range of cohorts including among aquanauts, expeditioners, pilots, military personnel and ship operators. We also reviewed the specifications and sleep quality data arising from every NASA spaceflight mission, beginning with Gemini. Finally, we conducted structured interviews with individuals experienced sleeping in non-traditional spaces including oil rig workers, Navy personnel, astronauts, and expeditioners. We also interviewed the engineers responsible for the design of the sleeping quarters presently deployed on the International Space Station. We found that the optimal sleep environment is cool, dark, quiet, and is perceived as safe and private. There are wide individual differences in the preferred sleep environment; therefore modifiable sleeping compartments are necessary to ensure all crewmembers are able to select personalized configurations for optimal sleep. A sub-optimal sleep environment is tolerable for only a limited time, therefore individual sleeping quarters should be designed for long-duration missions. In a confined space, the sleep environment serves a dual purpose as a place to sleep, but also as a place for storing personal items and as a place for privacy during non-sleep times. This need for privacy during sleep and wake appears to be critically important to the psychological well-being of crewmembers on long-duration missions

    A new record of the armored scale genus \u3ci\u3eCarulaspis\u3c/i\u3e MacGillivray (Hemiptera: Diaspididae) from Korea and its aphelinid parasitoids (Hymenoptera: Aphelinidae)

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    Carulaspis juniperi (Bouché) is newly documented as occurring in the Korean fauna of armored scales (Hemiptera: Diaspididae). The characters of this genus and species are redescribed based on specimens collected in Korea. In addition, four species of aphelinids (Hymenoptera: Aphelinidae) associated with C. juniperi were collected in Korea during the survey. Of these, Aphytis japonicus DeBach and Azim and Encarsia explorata (Silvestri) are recorded for the fi rst time from C. juniperi

    A new record of the armored scale genus \u3ci\u3eCarulaspis\u3c/i\u3e MacGillivray (Hemiptera: Diaspididae) from Korea and its aphelinid parasitoids (Hymenoptera: Aphelinidae)

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    Carulaspis juniperi (Bouché) is newly documented as occurring in the Korean fauna of armored scales (Hemiptera: Diaspididae). The characters of this genus and species are redescribed based on specimens collected in Korea. In addition, four species of aphelinids (Hymenoptera: Aphelinidae) associated with C. juniperi were collected in Korea during the survey. Of these, Aphytis japonicus DeBach and Azim and Encarsia explorata (Silvestri) are recorded for the fi rst time from C. juniperi

    The mealybugs (Hemiptera: Coccoidea: Pseudococcidae) of Egypt

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    The Egyptian fauna of mealybugs (Hemiptera: Coccoidea: Pseudococcidae) is reviewed and an illustrated key to the 30 genera and 54 species is provided. Phenacoccus madeirensis Green is reported for the first time in Egypt. A new genus, Ezzatacoccus Evans and Abd-Rabou, is described and illustrated with Amonostherium arabicum Ezzat, 1960 designated as its type species. Octococcus salicicola Priesner and Hosny, 1935 is reinstated as a valid taxon and transferred to Misericoccus Ferris, new combination. Ripersia cressae Hall is transferred to Maconellicoccus Ezzat, new combination and Planococcus lindingeri (Bodenheimer) is transferred back to Formicococcus Takahashi, revised status

    Conformal GaP layers on Si wire arrays for solar energy applications

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    We report conformal, epitaxial growth of GaP layers on arrays of Si microwires. Silicon wires grown using chlorosilane chemical vapor deposition were coated with GaP grown by metal-organic chemical vapor deposition. The crystalline quality of conformal, epitaxial GaP/Si wire arrays was assessed by transmission electron microscopy and x-ray diffraction. Hall measurements and photoluminescence show p- and n-type doping with high electron mobility and bright optical emission. GaP pn homojunction diodes on planar reference samples show photovoltaic response with an open circuit voltage of 660 mV

    A new genus and species of armored scale insect (Hemiptera: Diaspididae) from Australia found in the historic Koebele Collection of the California Academy of Sciences

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    A new genus and species of armored scale insect (Hemiptera: Diaspididae), Protomorgania koebelei Dooley and Evans, is described and illustrated from specimens collected by Albert Koebele on Pittosporum sp. (Pittosporaceae) in Australia around the year 1900. A key to the genera of armored scale insects similar to Protomorgania and known to occur in Australia is provided

    ‘VIOLET’: a fluorescence-based simulation exercise for training healthcare workers in the use of personal protective equipment

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    Background Healthcare workers caring for patients with high-consequence infectious diseases (HCIDs) require protection from pathogen exposure, for example by wearing personal protective equipment (PPE). Protection is acquired through the inherent safety of the PPE components, but also their safe and correct use, supported by adequate training and user familiarity. However, the evidence base for HCID PPE ensembles and any associated training is lacking, with subsequent variation between healthcare providers. Aim To develop an evidence-based assessment and training tool for evaluating PPE ensembles and doffing protocols, in the assessment of patients with suspected HCIDs. Methods VIOLET (Visualising Infection with Optimised Light for Education and Training) comprises a healthcare mannequin adapted to deliver simulated bodily fluids containing UV-fluorescent tracers. On demand and remotely operated, the mannequin projectile vomits (blue), coughs (red), has diarrhoea (yellow) and is covered in sweat (orange). Wearing PPE, healthcare staff participate in an HCID risk assessment and examination of the ‘patient’, thereby becoming exposed to these bodily fluids. Contamination of PPE is visualized and body-mapped under UV light before and after removal. Observational findings and participant feedback, around its use as a training exercise, is also recorded. Findings Significant contamination from different exposure events was seen, enabling evaluation of PPE and doffing procedures used. Observational data and participant feedback demonstrated its strengths and success as a training technique. Conclusion Simulation exercises using VIOLET provide evidence-based assessment of PPE ensembles, and are a valuable resource for training of healthcare staff in wearing and safe doffing of PPE
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