11,141 research outputs found
Effects of Various Split Developmental Photophases and Constant Light During 24 Hour Period on Adult Morphology in \u3ci\u3eEuschistus Tristigmus Tristigmus\u3c/i\u3e (Hemiptera: Pentatomidae)
Rearing immatures of Euschistus tristigmus tristigmus in a range of split photophases during each 24 h period and in constant light showed that the adult dimorphic response in shoulder shape and number of midventral spots could be produced; individuals reared in photoperiods in which each scotopnase was at least 2 h in length developed into the tristigmus (short-day) form
Effects of Continuous and Split Developmental Photophases During Each 24 Hour Period on Adult Color and Pubescence in \u3ci\u3eThyanta Calceata\u3c/i\u3e (Hemiptera: Pentatomidae)
Rearing immatures of Thyanta calceata in SL: 16D, SL:4D:8L:4D, and 16L:8D photo- periods showed that the length of each photophase, rather than an accumulation of shorter photophases, during each 24 h period wa, the determining factor in producing adult di- morphism in color and pubescence
Descriptions of Nymphal Instars of \u3ci\u3eThyanta Calceata\u3c/i\u3e (Hemiptera: Pentatomidae)
The external anatomy of each of the five nymphal instars of Thyanta calceata is de- scribed
Survey of the Reduviidae (Heteroptera) of Southern Illinois, Excluding the Phymatinae, With Notes on Biology
A survey of the nonphymatine reduviids of southern Illinois was conducted from April 1996 to November 1998. In addition to county distributions, information was collected on times of occurrence of adults and nymphs and associated habitats. These data were supplemented with label information associated with southern Illinois specimens housed in the Southern Illinois University Entomology Collection (SIUEC).
Twenty-five species were collected during this survey. An additional six species housed in the SIUEC were collected previously in southern Illinois but not during the survey. Of the 31 species, nine are state records: Ploiaria hirticornis, Rocconota annulicornis, Sinea complexa, Microtornus purcis, Rasahus hamatus, Saica elkinsi, Oncocephalus geniculatus, Pnirontis languida, and Pnirontis modesta
Diversity and Community Structure of Stream Insects in a Minimally Disturbed Forested Watershed in Southern Illinois
The Lusk Creek Watershed, located in Pope County, IL, long has been rec- ognized as a high quality area of biological significance, but surveys of the stream macroinvertebrate fauna have been limited. Thus, a survey of the benthic insect community at 11 sites in the upper portion of Lusk Creek was conducted from May 2003 to April 2005. A total of 20,888 specimens, mostly immatures, were examined during the study and represented eight orders. The Diptera, by far, was the most abundant order, with 18,590 specimens, almost all of which were members of the Chironomidae or Simuliidae. Members of the EPT (Ephemer- optera, Plecoptera, Trichoptera) contributed 1,550 specimens. The Coleoptera was represented by 647 specimens, most of which were members of Stenelmis (Elmidae) (n = 612). The Shannon diversity index (H ́) ranged from 1.07-2.01 for individual sites and was indicative of relatively undisturbed streams in this region. Jackknife analyses of richness estimated that as many as 37 taxa were unobserved in this survey. Results provide information on reference conditions in the region and a foundation for future monitoring
Effects of Various Split Developmental Photophases and Constant Light During Each 24 Hour Period on Adult Morphology in \u3ci\u3eThyanta Calceata\u3c/i\u3e (Hemiptera: Pentatomidae)
Rearing immatures of Thyanta calceata in a range of split photophases during each 24 h period and in constant light showed that the adult dimorphic response in color and pu- bescence could be produced; individuals reared in photoperiods in which each scotophase was at least 2 h in length generally developed into the fall/spring morph
'To bring the work to greater perfection': systematising governance in the Church of Scotland, 1696–1800
Following the confirmation of Presbyterian government in the Church of Scotland in 1690, a number of attempts were made to codify the governance practices that were to be followed in the various ruling bodies of the church. A review of these attempts indicates a distinctive approach to governance based on detailed record keeping and the monitoring of activities based on these records. While the church never managed to agree on a complete manual of procedure, a review of responses to the proposals suggests substantial conformance with their main precepts. Not only did these precepts contribute to the consolidation of the Presbyterian settlement of 1690, they also provided a legalistic and systemic cast to organisational structures and practices. This then shaped a distinctive ‘culture of organisation’ which, in conjunction with other institutions such as education, provided to-hand resources for the widely noted Scottish competence in administration. A focus on administrative practices in their cultural and social context provides a basis for assessing claims to Scottish distinctiveness and influence
Eastern Range Extension of \u3ci\u3eLeptoglossus Occidentalis\u3c/i\u3e With a Key to Leptoglossus Species of America North of Mexico (Heteroptera: Coreidae)
Leptoglossus occidentalis is reported for the first time from Illinois and Michigan, and confirmed for Indiana. A key to the species of Leptoglossus occurring in America north of Mexico is presented
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Iridium Corroles Exhibit Weak Near-Infrared Phosphorescence but Efficiently Sensitize Singlet Oxygen Formation.
Six-coordinate iridium(III) triarylcorrole derivatives, Ir[TpXPC)]L2, where TpXPC = tris(para-X-phenyl)corrole (X = CF3, H, Me, and OCH3) and L = pyridine (py), trimethylamine (tma), isoquinoline (isoq), 4-dimethylaminopyridine (dmap), and 4-picolinic acid (4pa), have been examined, with a view to identifying axial ligands most conducive to near-infrared phosphorescence. Disappointingly, the phosphorescence quantum yield invariably turned out to be very low, about 0.02 - 0.04% at ambient temperature, with about a two-fold increase at 77 K. Phosphorescence decay times were found to be around ~5 µs at 295 K and ~10 µs at 77 K. Fortunately, two of the Ir[TpCF3PC)]L2 derivatives, which were tested for their ability to sensitize singlet oxygen formation, were found to do so efficiently with quantum yields Φ(1O2) = 0.71 and 0.38 for L = py and 4pa, respectively. Iridium corroles thus may hold promise as photosensitizers in photodynamic therapy (PDT). The possibility of varying the axial ligand and of attaching biotargeting groups at the axial positions makes iridium corroles particularly exciting as PDT drug candidates
Artificial neural network prediction of weld distortion rectification using a travelling induction coil
An experimental investigation has been carried out to determine the applicability of an induction heating process with a travelling induction coil for the rectification of angular welding distortion. The results obtained from experimentation have been used to create artificial neural network models with the ability to predict the welding induced distortion and the distortion rectification achieved using a travelling induction coil. The experimental results have shown the ability to reduce the angular distortion for 8 mm and 10 mm thick DH36 steel plate and effectively eliminate the distortion on 6 mm thick plate. Results for 6 mm plate also show the existence of a critical induction coil travel speed at which maximum corrective bending occurs. Artificial neural networks have demonstrated the ability to predict the final distortion of the plate after both welding and induction heating. The models have also been used as a tool to determine the optimum speed to minimise the resulting distortion of steel plate after being subjected to both welding and induction heating processes
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