41 research outputs found
Dataset for "The Hazel Stem Borer, Agrilus pseudocoryli (Coleoptera: Buprestidae), as a Pest of Hybrid Hazelnuts"
No full textSurvey of damage from the hazel stem borer (Agrilus pseudocoryli) and presence of eastern filbert in a hybrid hazelnut orchard in Minnesota.
Little to no curation was performed on this dataset. DRUM can not verify the completeness or quality of the documentation, nor the FAIRness of the included files. Please contact the author with any questions.University of Minnesota - Louise T. Dosdall FellowshipUnited States Department of Agriculture - Specialty Crop Research Initiative 2019-51181-30025University of Minnesota - Bell Museum Award (James Wilkie Fund)Perish, Patrick K; Lindsey, Amelia R I; Koch, Alexa; Aukema, Brian H; Shanovich, Hailey N. (2023). Dataset for "The Hazel Stem Borer, Agrilus pseudocoryli (Coleoptera: Buprestidae), as a Pest of Hybrid Hazelnuts". Retrieved from the Data Repository for the University of Minnesota (DRUM), https://hdl.handle.net/11299/254160
European fruit lecanium (Parthenolecanium corni) occurrence in hybrid hazelnut plantings in Minnesota and associated parasitoid fauna from 2022
No full textThe datafile conserved here is an Excel file consisting of 5 sheets: 1) metadata, 2) data collected from two field sampling dates at the hybrid hazel plantings, 3) final collected data after rearing scale insect samples for parasitoid wasps, 4) the data organized for optimization in R software for analysis, and 5) measurements of the length of fruiting bodies (i.e., stromata) of Ophiocordyceps clavulata on collected scale insects for identification purposes.
Little to no curation was performed on this dataset. DRUM can not verify the completeness or quality of the documentation, nor the FAIRness of the included files. Please contact the author with any questions.These data were collected in the summer of 2022 as an independent undergraduate research project at the University of Minnesota by Simone Traband (undergraduate student, class of '24) under the mentorship of Hailey Shanovich (graduate student, class of '23). The goals of the project were to collect preliminary data on 1) the abundance of a soft scale insect pest, European fruit lecanium (Parthenolecanium corni), on hybrid hazelnut plants (Corylus americana x Corylus avellana) in experimental plantings at the University of Minnesota research stations, and 2) the prevalence of biological control by Hymenopteran parasitoid wasps and an endoparasitic fungi (Ophiocordyceps clavulata). These data accompany the paper "Synopsis of biological control for European fruit lecanium (Parthenolecanium corni) by parasitoids in North America and preliminary findings in hybrid hazelnut orchards" by Traband et al. 2023 in the Great Lakes Entomologist.
The preliminary field experiment was conducted at two experimental hybrid hazel plantings in Rosemount, Minnesota. Full details of study sites and other methodology can be found in the paper by Traband et al. 2023. On 11 July 2022 seven infested hazel plants were chosen to sample for scale insects from one hybrid hazelnut planting (n=7), and then on 22 July 2022 from two hybrid hazelnuts plantings (n = 4, n = 3) for a total of 14 plants. On each date, sampling of each plant was done for 15 person-minutes (i.e., three observers searching each plant for scales for five minutes), during which branches observed to contain one or more scale insects, no matter the status (i.e., showed signs of parasitism or not), were collected via hand pruners. Collected branches were immediately brought back to the lab and thoroughly examined to determine the number and status of every scale insect broken into three categories: showing signs of parasitism by fungus (i.e., fungal stromata protruding from scale insect), showing signs of parasitism by Hymenopteran parasitoids (i.e., containing a parasitoid exit hole in shell), or showing no signs of parasitism (i.e., showing no signs of parasitism). Branches containing scales showing no signs of parasitism were preserved for a duration of three weeks for purposes of parasitoid rearing and inspected every other day and any emerged parasitoids were collected and frozen until they could be identified. On 8 August 2022, all scale insects contained in jars were inspected for parasitoid exit holes, dissected to check for parasitoid larvae, pupae, or adults, and then discarded. All collected Hymenopteran parasitoid wasps were identified to the lowest taxonomic level possible.Traband, Simone G; Aukema, Brian H; Luhman, John C; Shanovich, Hailey N. (2023). European fruit lecanium (Parthenolecanium corni) occurrence in hybrid hazelnut plantings in Minnesota and associated parasitoid fauna from 2022. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://hdl.handle.net/11299/255564
Hazelnut and adult hazelnut weevil monitoring at Minnesota sites from 2020-2022
No full textDuring the field seasons of 2020 and 2021, two hazelnut research plantings at the University of Minnesota (one on the St. Paul campus and one at UMore park in Rosemount, MN) were sampled for adult weevils via beat-sheet sampling. This occurred from late May through July of each year. Two plants of six hybrid hazelnut genotypes at each of the hazelnut research plantings, for a total of 24 plants across sites, were sampled as follows: each in-row side plants were sampled for weevils via beat sheet sampling involving one person holding a one-meter canvas cloth under the side of the plant and another person beating about one-half of the plant onto the canvas 10 times with a wooden dowel. Plant/nut phenology characteristics were also recorded each week by randomly measuring the dimensions (height and 2 widths) of five hazelnut clusters on each sampled plant (via digital calipers; eventually to calculate volume), and picking five random nuts from each plant and measuring each hazelnut's respective in-shell volume, shell thickness, and shell hardness. Detailed methods for these measurements can be found in the doctoral dissertation of Hailey N Shanovich that is published with the digital conservancy of the University of Minnesota.
In August of 2020, 2021, and 2022, before hazelnut harvest, every plant in at the hybrid hazelnut planting at the Rosemount, MN was sampled to determine whole-field infestation by hazelnut weevils. Additionally, in 2021, every plant at this site was also beat-sheet sampled in order to record the adult hazelnut weevil abundance on each plant and examine any spatial patterns of adult abundance in the planting. Plant characteristics such as plant height, volume, and genotype were recorded for each plant, as well, in order to examine whether any of these predicted adult weevil abundance or nut infestation.
In 2022, the same hazelnut phenology characteristics were recorded as described above during the hazelnut weevils' egg-laying period as determined from data we collected in 2020 and 2021 for a larger sample of plants of each genotype in order to analyze whether any of these factors differed between hybrid hazel genotypes during their egg-laying period that could describe differences we observed between infestation of the genotypes.
Little to no curation was performed on this dataset. DRUM can not verify the completeness or quality of the documentation, nor the FAIRness of the included files. Please contact the author with any questions.This data was collected in order to determine the phenology of adult hazelnut weevils (Curculio obtusus) within interspecific hybrid hazelnut (Corylus americana x Corylus avellana) plantings in Minnesota and identify hazelnut factors that might be driving the weevils within-field abundance and infestation/damage in the crop between different hazelnut genotypes. Adult hazelnut weevil lay eggs into developing hazelnuts and their larvae then develop inside hazelnuts, devouring the edible kernel, directly impacting crop yield. Therefore, the objective was to determine when this behavior occurs in the Minnesota crop and to identify any plant-level or nut-level factors driving spatial trends in their abundance and nut infestation within the hazelnut plantings.University of Minnesota - Bell Museum Award (James Wilkie Fund)United States Department of Agriculture - Specialty Crop Research Initiative (2019-51181-30025)University of Minnesota - Louise T. Dosdall FellowshipShanovich, Hailey N; Anderson, Pheylan A; Aukema, Brian H. (2023). Hazelnut and adult hazelnut weevil monitoring at Minnesota sites from 2020-2022. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://hdl.handle.net/11299/255141
Development of small-molecule probes for photoacoustic imaging of hypoxia
No full textHypoxia occurs when tissue oxygen supply is restricted, inhibiting normal physiological processes. Because of the irregular vasculature of rapidly growing tumors, hypoxia is a hallmark of cancer and exists in 50-60% of solid tumors. Hypoxia-induced changes in gene expression lead to treatment resistance, aggressive phenotypes, and increased metastatic potential; thus, imaging tumor hypoxia has important implications in treatment planning and predicting patient prognosis.
Herein we discuss our approach for hypoxia detection using photoacoustic (PA) imaging. This method combines the resolution of optical imaging with the tissue penetration of ultrasound to enable high-resolution image acquisition at clinically relevant depths. While PA imaging can detect endogenous absorbers, a powerful application of this modality lies in its combination with small-molecule probes that can provide a specific molecular readout. To this end, we have outlined key strategies for developing activatable PA probes and applied these methods to the development of small-molecule probes that can be used for PA imaging of hypoxia in deep tissue.
Our design for small-molecule, hypoxia-responsive probes relies on a prodrug-inspired N- oxide-based trigger that is reduced selectively in hypoxic conditions to produce a change in the PA signal of the probe. Our first-generation probe is capable of reporting on both acute and chronic hypoxia in vivo using PA and fluorescence imaging. To further develop this design, we employ several strategies for photophysical tuning that improve the PA wavelength and signal intensity. We also demonstrate the application of our design for simultaneous PA imaging of tissue and blood oxygenation. Finally, we show progress toward the application of this design for targeted agents that can report on prostate tumor hypoxia. We envision that these probes will be useful preclinical tools for hypoxia imaging and may lead to new agents that can be used in a clinical setting.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2022-08-01The student, Hailey Knox, accepted the attached license on 2020-06-30 at 22:07.The student, Hailey Knox, submitted this Dissertation for approval on 2020-06-30 at 22:17.This Dissertation was approved for publication on 2020-07-02 at 08:47.DSpace SAF Submission Ingestion Package generated from Vireo submission #15484 on 2020-10-02 at 15:31:08Made available in DSpace on 2020-10-07T22:07:14Z (GMT). No. of bitstreams: 7
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Life Satisfaction and Maslow's Hierarchy of Needs: An Analysis of 48 Nations
No full textI will be presenting alone. Dr. Cramer has supervised my project, which is based off of findings from a similar study conducted for Wave 6 by Ms. Denise Deblock and Dr. Cramer.To assess whether Maslow's hierarchy of needs can predict life satisfaction, the present study utilizes Wave 7 (2017-2020) of the World Values Survey. These data include questions on health and financial satisfaction, as well as trust and confidence in societal institutions disseminated to over 69 000 individuals from 48 countries. According to Maslow's hierarchy of needs, it is predicted that greater life satisfaction will be subsequently predicted by health satisfaction at the first level, financial satisfaction at the second level, and trust and confidence at the third level. Data were split by both the individual and national levels to determine how life satisfaction can be predicted by individuals and nations. Based on previous findings from Wave 6 (2010-2014), we anticipate that financial satisfaction and income (aligning with Maslow's second level) are more important predictors of greater life satisfaction than health satisfaction (aligning with Maslow's first level). Results will provide important implications regarding the application of Maslow's hierarchy of needs at both the individual and national levels
Occult Herpes Simplex Virus Colonization of Bullous Dermatitides
No full textpeer reviewedBackground: Acantholytic disorders, including pemphigus vulgaris, chronic benign familial pemphigus
(Hailey-Hailey disease), Darier disease, and Grover transient acantholytic dermatosis, as well as other vesiculobullous
disorders, including bullous pemphigoid, epidermolysis bullosa, and atopic dermatitis, are prone to florid
infections by herpes simplex virus (HSV)-I and -II, and, more rarely, by varicella-zoster virus (VZV). As these
infections are difficult to recognize clinically and histologically, their frequency remains unknown. A possible
occult viral colonization has never been documented in these disorders. The manner in which the primary bullous
disorders are contaminated by herpesviridae remains unclear.
Objective: To retrospectivally assess the possible presence of HSV and VZV in a series of biopsies of
acantholytic disorders and bullous pemphigoid.
Method: The typical a-herpesviridae-related cytopathic signs were searched for by conventional microscopy in
skin biopsies of patients with pemphigus vulgaris (n = 19), bullous pemphigoid (n = 20), Darier disease (n = 18),
Hailey-Hailey disease((Author: is this the same as superficial pemphigus, as mentioned in both Histology
sections?)) (n = 3), and Grover transient acantholytic dermatosis (n = 3). Immunohistochemistry (IHC) targeted
specific HSV-I, HSV-II, and VZV antigens. Polymerase chain reaction (PCR) was used for detecting HSV- and
VZV-specific DNA sequences.
Results: No cytopathic signs suggestive of HSV or VZV infection were detected. However, IHC revealed HSV
antigens in Darier disease (1/18, HSV-I), Grover transient acantholytic dermatosis (1/3, HSV-I), pemphigus
vulgaris (1/20((Author: 1/19 in the Immunohistochemistry section?)), HSV-I), and bullous pemphigoid (2/
20, HSV-I and HSV-II). In these IHC-positive cases, PCR amplified specific HSV primers in Darier disease (1/
18), pemphigus vulgaris (1/20((Author: 1/19 in the PCR section?))), and bullous pemphigoid (1/20). VZV
antigens and nucleic acids were never identified. The HSV antigens were ((Author: nearly always, as in the
Immunohistochemistry section?)) restricted to the upper part of the granular layer and thus differed from the
usual HSV distribution during cutaneous infection. Negative and positive controls yielded consistently positive
and negative results, respectively.((Author: OK?))
Conclusion: This report shows for the first time that clinically and histologically occult HSV colonization may
occur in Darier disease, Grover transient acantholytic disease, pemphigus vulgaris, and bullous pemphigoid.
Given the frequent use of immunosuppressive treatments for primary bullous disorders, greater awareness of
HSV colonization and infection is recommended in these patients
Current directions in videoconferencing tele-mental health research
No full textThe provision of mental health services via videoconferencing tele-mental health has become an increasingly routine component of mental health service delivery throughout the world. Emphasizing the research literature since 2003, we examine (a) the extent to which the field of tele-mental health has advanced the research agenda previously suggested and (b) implications for tele-mental healthcare delivery for special clinical populations. Previous findings have demonstrated that tele-mental health services are satisfactory to patients, improve outcomes, and are probably cost effective. In the very small number of randomized controlled studies that have been conducted to date, tele-mental health has demonstrated equivalent efficacy compared to face-to-face care in a variety of clinical settings and with specific patient populations. However, methodologically flawed or limited research studies are the norm, and thus the research agenda for tele-mental health has not been fully maximized. Implications for future research and practice are discussed
A LASER STUDY OF THE BLUE ELECTRONIC TRANSITIONS OF CaS
No full textAuthor Institution: Department of Chemistry, University of Arizona; Department of Chemistry, University of WaterlooThree new electronic transitions of CaS have been observed in the blue region of the spectrum. The vibrational bands in these transitions span thousands of owing to a large change in geometry. Approximately portion of the spectrum containing containing these bands has been recorded at high resolution by dye laser excitation spectroscopy and analyzed. The new states all have , and are tentatively labeled , , and . Spectroscopic constants have been generated for all three upper states and for the State from a fit to 4340 individual lines. The most important constants determined were
Becoming an HR strategic partner: tales of transition
No full textThis paper aims to bridge the gap between previous examinations of HR strategic partnership from a role perspective (Truss et al. 2002; Caldwell 2003) and an emerging interest in the social construction of identity (Alvesson et al. 2008). I consider ‘strategic partner’ as a local, flexible social construction framed by the broader occupational context. Based on a year-long ethnographic study, I examine the experiences of HR practitioners ‘becoming’ strategic partners, considering the themes of becoming strategic, becoming a partner and remaining a generalist. Practitioners depict becoming strategic as a ‘release’ from previous constraints, with becoming a partner positioned as filling a gap created by clients’ deficiencies in people management. Meanwhile, tensions develop as strategic partners attempt to retain a say in transactional issues. I reflect on the resulting practical issues while also considering the role of HR practitioners in “the dynamic and socially complex nature of HRM” (Francis 2003: 323)
Interactions between the content, context and, process of organizational change: a systematic literature review
No full textResearch into the phenomenon of change has attracted interest from a range of management disciplines; organizational, management, behavioural and operations. Each discipline brings with it a perspective which informs the theoretical debates and empirical research, resulting in different ideas, meaning and approaches taken in studying the phenomenon of change. Ideas about the meaning of the content of change, why contextual factors might influence the process of change and, how does the process of change unfold over time, are three important aspects to understanding the phenomenon of change. This literature review draws on the three concepts of the content, context and process of change to explore the extant change literature.
Evidence based literature reviews have a strong tradition within the medical field and have been shown to be a rigorous method for determining efficacy of clinical trials. This review applies the principles of this method but within a management research context and reviews 52 papers.
Variations in the aspects of organizational context and process of change empirically studied confirm that context plays a significant and influential role in processes of change and change outcomes. There is little evidence to support the idea that the content of change influences the process of change activities and this is an area that needs further research. Further research is also needed to develop the idea of the importance of emergent change activities within planned change frameworks
