1,001 research outputs found

    Leaf Mining Insects and Their Parasitoids in the Old-Growth Forest of the Huron Mountains

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    Leaf mining insects in an old-growth forest along the south central shore of Lake Superior in Michigan are documented. We present the results of a 13-year survey of leaf mining species, larval hosts, seasonal occurrence, and parasitoids, as well as report biological observations. Representative larvae, mines, adults, and parasitoids were preserved. Among the larval host associations, 15 are reported as new. Additionally, 42 parasitoid taxa were identified resulting in six first reports from the New World and 32 new host associations. Two undescribed species (Gelechiidae and Figitidae) discovered through this research were described in earlier publications

    Clinical Outcomes of 0.018-Inch and 0.022-Inch Bracket Slot Using the ABO Objective Grading System

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    Objective: To determine if there is a significant difference in the clinical outcomes of cases treated with 0.018-inch brackets vs 0.022-inch brackets according to the American Board of Orthodontics (ABO) Objective Grading System (OGS). Materials and Methods: Treatment time and the ABO-OGS standards in alignment/rotations, marginal ridges, buccolingual inclination, overjet, occlusal relationships, occlusal contacts, interproximal contacts, and root angulations were used to compare clinical outcomes between a series of 828 consecutively completed orthodontic cases (2005–2008) treated in a university graduate orthodontic clinic with 0.018-inch- and 0.022-inch-slot brackets. Results: A two-sample t-test showed a significantly shorter treatment time and lower ABO-OGS score in four categories (alignment/rotations, marginal ridges, overjet, and root angulations), as well as lower total ABO-OGS total score, with the 0.018-inch brackets. The ANCOVA—adjusting for covariants of discrepancy index, age, gender, and treatment time—showed that the 0.018-inch brackets scored significantly lower than the 0.022-inch brackets in both the alignment/rotations category and total ABO-OGS score. Conclusions: There were statistically, but not clinically, significant differences in treatment times and in total ABO-OGS scores in favor of 0.018-inch brackets as compared with the 0.022-inch brackets in a university graduate orthodontic clinic (2005–2008)

    lnsect fauna of selected polypore fungi on birch stems in northern Bohemia

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    Fauna of polypore fungi Fornes fornentarius (L. x Fries) Kicks, Piptoporus betulinus (Bull. ex Fr.) F. Karsten, Fornitopsis pinicola (Swatr ex Fr.) P. Karsten of the birch stem, consisted of 55 insect species. The following species were dominant: Diaperis boleti F. 34.8%, Aridius nodifer West. 19.9%, Bolitophagus reticulatus L. 10.9%, Epuraea variegata (Herbst.) 6.3%, Gyrophaena boleti (L.) 5%, Cis jacquernarti Mellié 4.9%, Atheta fungi (Gras) 3.5%, Atheta crassicornis (F.) 2.8% and moth Archinemapogon yildizae Kocak 2.1 %. A. nodifer (Latridiidae) is a ubiquitous mycetophagous species which in our conditions prefers F. pinicola and has a significant position in the fauna of F. betulinus. Thunes (1994) reports C. jacquermarti only from pine forest, where it formed 54.6% on sporocarps of F. fornentarius while only 1.3% on F. betulinus. In our collections made in birch stands it preferred multiyear sporocarps of F. pinicola and F. fomentarius to P. betulinus. In the Czech Republic it is generally common in deciduous forests especially on F. fornentarius, often simultaneously with C. alter. This can lead to the conclusion that it is the sporocarp of decaying fungus species which is decisive rather than the type of forest (Paviour-Smith 1960, Lawrence 1973, Jelínek 1990). Dominant representation of D. boleti species (34.8%) has been registered with an evident linkage to P. betulinus (50.6%) and F. fornentarius (31.1 %) and B. reticulatus with prevailing bond to F: fornentarius (46.3%). Butterfly caterpillar fauna showed a limited species spectrum, yet its representatives occurred in al1 sporocarps, F. betulinus being generally preferred. Key words: Birch, Betula verrucosa, Fomes fornentarius, Piptoporus betulinus, Fornitopsis pinicola, Insect fauna.Fauna of polypore fungi Fornes fornentarius (L. x Fries) Kicks, Piptoporus betulinus (Bull. ex Fr.) F. Karsten, Fornitopsis pinicola (Swatr ex Fr.) P. Karsten of the birch stem, consisted of 55 insect species. The following species were dominant: Diaperis boleti F. 34.8%, Aridius nodifer West. 19.9%, Bolitophagus reticulatus L. 10.9%, Epuraea variegata (Herbst.) 6.3%, Gyrophaena boleti (L.) 5%, Cis jacquernarti Mellié 4.9%, Atheta fungi (Gras) 3.5%, Atheta crassicornis (F.) 2.8% and moth Archinemapogon yildizae Kocak 2.1 %. A. nodifer (Latridiidae) is a ubiquitous mycetophagous species which in our conditions prefers F. pinicola and has a significant position in the fauna of F. betulinus. Thunes (1994) reports C. jacquermarti only from pine forest, where it formed 54.6% on sporocarps of F. fornentarius while only 1.3% on F. betulinus. In our collections made in birch stands it preferred multiyear sporocarps of F. pinicola and F. fomentarius to P. betulinus. In the Czech Republic it is generally common in deciduous forests especially on F. fornentarius, often simultaneously with C. alter. This can lead to the conclusion that it is the sporocarp of decaying fungus species which is decisive rather than the type of forest (Paviour-Smith 1960, Lawrence 1973, Jelínek 1990). Dominant representation of D. boleti species (34.8%) has been registered with an evident linkage to P. betulinus (50.6%) and F. fornentarius (31.1 %) and B. reticulatus with prevailing bond to F: fornentarius (46.3%). Butterfly caterpillar fauna showed a limited species spectrum, yet its representatives occurred in al1 sporocarps, F. betulinus being generally preferred. Key words: Birch, Betula verrucosa, Fomes fornentarius, Piptoporus betulinus, Fornitopsis pinicola, Insect fauna.Fauna of polypore fungi Fornes fornentarius (L. x Fries) Kicks, Piptoporus betulinus (Bull. ex Fr.) F. Karsten, Fornitopsis pinicola (Swatr ex Fr.) P. Karsten of the birch stem, consisted of 55 insect species. The following species were dominant: Diaperis boleti F. 34.8%, Aridius nodifer West. 19.9%, Bolitophagus reticulatus L. 10.9%, Epuraea variegata (Herbst.) 6.3%, Gyrophaena boleti (L.) 5%, Cis jacquernarti Mellié 4.9%, Atheta fungi (Gras) 3.5%, Atheta crassicornis (F.) 2.8% and moth Archinemapogon yildizae Kocak 2.1 %. A. nodifer (Latridiidae) is a ubiquitous mycetophagous species which in our conditions prefers F. pinicola and has a significant position in the fauna of F. betulinus. Thunes (1994) reports C. jacquermarti only from pine forest, where it formed 54.6% on sporocarps of F. fornentarius while only 1.3% on F. betulinus. In our collections made in birch stands it preferred multiyear sporocarps of F. pinicola and F. fomentarius to P. betulinus. In the Czech Republic it is generally common in deciduous forests especially on F. fornentarius, often simultaneously with C. alter. This can lead to the conclusion that it is the sporocarp of decaying fungus species which is decisive rather than the type of forest (Paviour-Smith 1960, Lawrence 1973, Jelínek 1990). Dominant representation of D. boleti species (34.8%) has been registered with an evident linkage to P. betulinus (50.6%) and F. fornentarius (31.1 %) and B. reticulatus with prevailing bond to F: fornentarius (46.3%). Butterfly caterpillar fauna showed a limited species spectrum, yet its representatives occurred in al1 sporocarps, F. betulinus being generally preferred. Key words: Birch, Betula verrucosa, Fomes fornentarius, Piptoporus betulinus, Fornitopsis pinicola, Insect fauna

    A Historical Analysis of Southeast Asian Refugee Communities: Post-war Acculturation and Education in the U.S.

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    This analysis considers the circumstances of Southeast Asian refugee immigration following the Vietnam War as well as the political and social environment in the US upon their arrival, in order to examine the historical factors that link to their subsequent educational trends. Receptive government policies enabled these communities to survive; however, with the exception of first-wave Vietnamese refugees, their limited job skills, English language knowledge, and education upon arrival were exacerbated by overall prejudiced societal reception and the lack of an existing co-ethnic community to buffer their entry into US society. All groups have generally experienced low academic achievement except in the case of Vietnamese Americans, for whom a notable contingent demonstrates higher attainment. Implications for subsequent generations, and for research and practice, are discussed

    Leaf Mining Insects and Their Parasitoids in the Old-Growth Forest of the Huron Mountains

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    Leaf mining insects in an old-growth forest along the south central shore of Lake Superior in Michigan are documented. We present the results of a 13-year survey of leaf mining species, larval hosts, seasonal occurrence, and parasitoids, as well as report biological observations. Representative larvae, mines, adults, and parasitoids were preserved. Among the larval host associations, 15 are reported as new. Additionally, 42 parasitoid taxa were identified resulting in six first reports from the New World and 32 new host associations. Two undescribed species (Gelechiidae and Figitidae) discovered through this research were described in earlier publications

    Mucosal Thickening of Maxillary Sinuses of CLP vs non-CLP patients

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    poster abstractObjectives: The objective of this retrospective radiographic study was to compare mucosal thickening of maxillary sinuses of patients with cleft lip and palate (CLP) vs. non-CLP. Methods: Following IRB approval, three-dimensional cone beam computerized tomographs (CBCT; i-CAT) of children with unilateral CLP and children without CLP (age and gender matched; 8-14yoa; n=15ea) were selected randomly from pre-existing orthodontic records. Following reliability studies, one investigator segmented both sinuses from each CBCT using Dolphin-3D Imaging software. The sinuses were separated coronally into .4mm slices anterioposteriorly. Bony sinuses and airspaces were outlined manually on each slice. Software calculated total sinus and airspace area. Areas were summed and multiplied by slice thickness to determine volume. Mucosal thickening was the difference between total sinus and airspace volumes. Percent mucosal thickening was calculated. Since no significant differences existed between cleft (left) and noncleft (right) sides of either patient group (p>.05), sinuses for each group were pooled (n=30 ea). Significant differences in total sinus, airspace, mucosal thickening volumes and % mucosal thickening were determined using paired t-tests, accepting p<0.05 as significant. Principal Component Analysis (PCA) scatterplots were used to determine patterns of multivariate variation based on group, age, and sex. MANOVA was used to confirm PCA findings. Reliability was determined using Intraclass Correlations (ICC). Results: Reliability was excellent (ICC>0.99). The CLP total sinus and airspace volume were significantly smaller and mucosal thickening and % mucosal thickening were significantly greater than non-CLP sinuses (all p<.024). PCA showed that 89.6% of sample variance was explained by PC axis 1 and 2 (group and age). Age group 8-9yrs showed more separation with 13-14yrs than with 10-12yrs. MANOVA confirmed a significant effect of sample (p=.001) and age (p=.007)

    The Effect of Anterior Tooth Position on Trumpet Performance Quality

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    poster abstractObjective: Music teachers contend that the arrangement of anterior teeth affects trumpet performance by influencing the embouchure. Since there is little quantitative data to support this claim, the purpose of this study was to determine whether trumpet performance skills are associated with the malalignment of anterior teeth. Methods: Following IRB approval, 70 trumpet students (55M:15F; aged 20-38.9 yrs.) from 11 universities were consented to complete a survey concerning dental history and trumpet playing habits. The students were asked to play a scripted performance skill test (flexibility, range, endurance, and articulation exercises) on their instrument in a soundproof music practice room while being audio and video recorded. A threedimensional (3D) cone beam computerized tomograph (CBCT) was taken of each student the same day as the skill test. Following reliability studies, overjet, overbite, and degree of anterior tooth irregularity (Little’s Index) were measured on the 3D CBCT. Nonparametric correlations, accepting p0.8). Significant (p<0.05), but weak (r<0.30) associations were found only between Little’s Index of the mandibular anterior dentition and the performance skills: flexibility (exercises a, c and avg) and articulation (double tongue). No other associations were significant. Conclusions: University trumpet students with mandibular anterior teeth that are smoothly aligned have significantly better performance skills than those with misaligned mandibular anterior teeth; however, the association is weak
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