107 research outputs found
Working Toward Human-Centered, Reparative Change Through Print Collection Development at the University of Denver
In 2014, the DU Libraries began to address a lack of work by and about the Cheyenne and Arapaho people in its collections, and moved toward reparative change in response to historical traumas suffered by Indigenous Peoples. The history of this work and its originsâwhich led to the creation of the Librariesâ Collection Diversification Task Force (CDTF) and now informs the Librariesâ collection development philosophy and operational inclusivityâare discussed in the âDevelopments Leading to the Collection Diversification Task Forceâ section of this chapter. Further on, the âCollection Diversification Task Forceâ section clarifies methodology, recommendations, and self-discovery on the part of librarians. Finally, âReflections for Future Workâ summarizes where collection diversification currently stands at DU Libraries and highlights the role of administrative support in encouraging this process to continue
A non-canonical ESCRT pathway, including histidine domain phosphotyrosine phosphatase (HD-PTP), is used for down-regulation of virally ubiquitinated MHC class I.
The Kaposi's sarcoma-associated herpes virus (KSHV) K3 viral gene product effectively down-regulates cell surface MHC class I. K3 is an E3 ubiquitin ligase that promotes Lys(63)-linked polyubiquitination of MHC class I, providing the signal for clathrin-mediated endocytosis. Endocytosis is followed by sorting into the intralumenal vesicles (ILVs) of multivesicular bodies (MVBs) and eventual delivery to lysosomes. The sorting of MHC class I into MVBs requires many individual proteins of the four endosomal sorting complexes required for transport (ESCRTs). In HeLa cells expressing the KSHV K3 ubiquitin ligase, the effect of RNAi-mediated depletion of individual proteins of the ESCRT-0 and ESCRT-I complexes and three ESCRT-III proteins showed that these are required to down-regulate MHC class I. However, depletion of proteins of the ESCRT-II complex or of the ESCRT-III protein, VPS20 (vacuolar protein sorting 20)/CHMP6 (charged MVB protein 6), failed to prevent the loss of MHC class I from the cell surface. Depletion of histidine domain phosphotyrosine phosphatase (HD-PTP) resulted in an increase in the cell surface concentration of MHC class I in HeLa cells expressing the KSHV K3 ubiquitin ligase. Rescue experiments with wild-type (WT) and mutant HD-PTP supported the conclusion that HD-PTP acts as an alternative to ESCRT-II and VPS20/CHMP6 as a link between the ESCRT-I and those ESCRT-III protein(s) necessary for ILV formation. Thus, the down-regulation of cell surface MHC class I, polyubiquitinated by the KSHV K3 ubiquitin ligase, does not employ the canonical ESCRT pathway, but instead utilizes an alternative pathway in which HD-PTP replaces ESCRT-II and VPS20/CHMP6.This work was supported by an MRC research grant to J.P.L. (G0900113). M.D.J.P. and J.L.E. were MRC research students and S.P. a Wellcome Trust research student. K.B. was a British Heart Foundation Intermediate Fellow and P.J.L. is a Wellcome Trust Principal Fellow. The CIMR is supported by a Wellcome Trust Strategic Award 100140 and an electron microscope was purchased with Wellcome Trust grant 093026.This is the final version of the article. It first appeared from Portland Press via http://dx.doi.org/10.1042/BJ2015033
Changing patterns of mortality during the COVID-19 pandemic: population-based modelling to understand palliative care implications
The Arthur Interactive Media Study: Initial Findings From a Cross-Age Peer Mentoring and Digital Media-Based Character Development Program
In the midst of increasing emphasis on the inclusion of character education in both school and out-of-school time programs, digital technologies have become ubiquitous in these settings. Based on the potential of these technologies to enhance childrenâs character development, the Arthur Interactive Media (AIM) study investigated if one specific unit or set of digital media-based activities engaged youth in discussions about character. First and second grade students were paired with 4th and 5th grade students, respectively, while engaging with an online interactive graphic novel (IGN) about a character-relevant story based on the Arthur cartoon series. Teachers (n = 8) completed surveys about the AIM Unit, and conversations between cross-age peer dyads (n = 27 dyads) during their engagement with the IGN were analyzed. Results indicated that teachers were very satisfied with the materials and reported that children were very engaged throughout. Analyses of childrenâs conversations indicated that children participated in character-relevant conversations involving humility, forgiveness, and future-mindedness while engaging with the IGN
The Arthur Interactive Media Study: Initial Findings From a Cross-Age Peer Mentoring and Digital Media-Based Character Development Program
In the midst of increasing emphasis on the inclusion of character education in both school and out-of-school time programs, digital technologies have become ubiquitous in these settings. Based on the potential of these technologies to enhance childrenâs character development, the Arthur Interactive Media (AIM) study investigated if one specific unit or set of digital media-based activities engaged youth in discussions about character. First and second grade students were paired with 4th and 5th grade students, respectively, while engaging with an online interactive graphic novel (IGN) about a character-relevant story based on the Arthur cartoon series. Teachers (n = 8) completed surveys about the AIM Unit, and conversations between cross-age peer dyads (n = 27 dyads) during their engagement with the IGN were analyzed. Results indicated that teachers were very satisfied with the materials and reported that children were very engaged throughout. Analyses of childrenâs conversations indicated that children participated in character-relevant conversations involving humility, forgiveness, and future-mindedness while engaging with the IGN
Diversity and toxicity of Pseudo-nitzschia species in Monterey Bay : perspectives from targeted and adaptive sampling
Author Posting. Š The Author(s), 2018. This is the author's version of the work. It is posted here under a nonexclusive, irrevocable, paid-up, worldwide license granted to WHOI. It is made available for personal use, not for redistribution. The definitive version was published in Harmful Algae 78 (2018): 129-141, doi:10.1016/j.hal.2018.08.006.Monterey Bay, California experiences near-annual blooms of Pseudo-nitzschia that can
affect marine animal health and the economy, including impacts to tourism and
commercial/recreational fisheries. One species in particular, P. australis, has been
implicated in the most toxic of events, however other species within the genus can
contribute to widespread variability in community structure and associated toxicity across
years. Current monitoring methods are limited in their spatial coverage as well as their
ability to capture the full suite of species present, thereby hindering understanding of
HAB events and limiting predictive accuracy. An integrated deployment of multiple in
situ platforms, some with autonomous adaptive sampling capabilities, occurred during
two divergent bloom years in the bay, and uncovered detailed aspects of population and
toxicity dynamics. A bloom in 2013 was characterized by spatial differences in Pseudo39
nitzschia populations, with the low-toxin producer P. fraudulenta dominating the inshore
community and toxic P. australis dominating the offshore community. An exceptionally
toxic bloom in 2015 developed as a diverse Pseudo-nitzschia community abruptly
transitioned into a bloom of highly toxic P. australis within the time frame of a week.
Increases in cell density and proliferation coincided with strong upwelling of nutrients.
High toxicity was driven by silicate limitation of the dense bloom. This temporal shift in
species composition mirrored the shift observed further north in the California Current
System off Oregon and Washington. The broad scope of sampling and unique platform
capabilities employed during these studies revealed important patterns in bloom
formation and persistence for Pseudo-nitzschia. Results underscore the benefit of
expanded biological observing capabilities and targeted sampling methods to capture
more comprehensive spatial and temporal scales for studying and predicting future
events.This work was
supported by the National Oceanic and Atmospheric Administration
(NA11NOS4780055, NA11NOS4780056, NA11NOS4780030) and a fellowship to H.
Bowers from the Packard Foundation
Recommendations From the International Consortium on Professional Nursing Practice in Long-Term Care Homes
AbstractIn response to the International Association of Gerontology and Geriatrics' global agenda for clinical research and quality of care in long-term care homes (LTCHs), the International Consortium on Professional Nursing Practice in Long Term Care Homes (the Consortium) was formed to develop nursing leadership capacity and address the concerns regarding the current state of professional nursing practice in LTCHs. At its invitational, 2-day inaugural meeting, the Consortium brought together international nurse experts to explore the potential of registered nurses (RNs) who work as supervisors or charge nurses within the LTCHs and the value of their contribution in nursing homes, consider what RN competencies might be needed, discuss effective educational (curriculum and practice) experiences, health care policy, and human resources planning requirements, and to identify what sustainable nurse leadership strategies and models might enhance the effectiveness of RNs in improving resident, family, and staff outcomes. The Consortium made recommendations about the following priority issues for action: (1) define the competencies of RNs required to care for older adults in LTCHs; (2) create an LTCH environment in which the RN role is differentiated from other team members and RNs can practice to their full scope; and (3) prepare RN leaders to operate effectively in person-centered care LTCH environments. In addition to clear recommendations for practice, the Consortium identified several areas in which further research is needed. The Consortium advocated for a research agenda that emphasizes an international coordination of research efforts to explore similar issues, the pursuit of examining the impact of nursing and organizational models, and the showcasing of excellence in nursing practice in care homes, so that others might learn from what works. Several studies already under way are also described
The Grizzly, February 24, 1989
Ursinus Finds and Dumps Its Own Dump ⢠Depression Treatable ⢠GPA Lowered for Frat Pledges ⢠Letter: Mannherz Assaults Grizzly ⢠Myrin Library Meeting Future ⢠Photos Don\u27t Show All, More to Dump Than Meets the Eye ⢠Ursinus Awaits ECAC Bid ⢠Matters Set School Record ⢠McMullin Keys U.C. Track ⢠U.C.: Up, Then Down ⢠Ursinus Women: The Stuff of Champions ⢠Cinders Smoking ⢠Meisters: Ohio or Bust! ⢠Richter Doesn\u27t Trash Klee ⢠Wismer Deceiving Diners ⢠DeCatur Nips Nippon ⢠Yanks and Frogs Alike ⢠Airband Tonight ⢠Graduation 1989 Coming Together ⢠Peruvian Paradisehttps://digitalcommons.ursinus.edu/grizzlynews/1230/thumbnail.jp
Inter-rater reliability of malaria parasite counts and comparison of methods
BACKGROUND: The introduction of artemesinin-based treatment for falciparum malaria has led to a shift away from symptom-based diagnosis. Diagnosis may be achieved by using rapid non-microscopic diagnostic tests (RDTs), of which there are many available. Light microscopy, however, has a central role in parasite identification and quantification and remains the main method of parasite-based diagnosis in clinic and hospital settings and is necessary for monitoring the accuracy of RDTs. The World Health Organization has prepared a proficiency testing panel containing a range of malaria-positive blood samples of known parasitaemia, to be used for the assessment of commercially available malaria RDTs. Different blood film and counting methods may be used for this purpose, which raises questions regarding accuracy and reproducibility. A comparison was made of the established methods for parasitaemia estimation to determine which would give the least inter-rater and inter-method variation METHODS: Experienced malaria microscopists counted asexual parasitaemia on different slides using three methods; the thin film method using the total erythrocyte count, the thick film method using the total white cell count and the Earle and Perez method. All the slides were stained using Giemsa pH 7.2. Analysis of variance (ANOVA) models were used to find the inter-rater reliability for the different methods. The paired t-test was used to assess any systematic bias between the two methods, and a regression analysis was used to see if there was a changing bias with parasite count level. RESULTS: The thin blood film gave parasite counts around 30% higher than those obtained by the thick film and Earle and Perez methods, but exhibited a loss of sensitivity with low parasitaemia. The thick film and Earle and Perez methods showed little or no bias in counts between the two methods, however, estimated inter-rater reliability was slightly better for the thick film method. CONCLUSION: The thin film method gave results closer to the true parasite count but is not feasible at a parasitaemia below 500 parasites per microlitre. The thick film method was both reproducible and practical for this project. The determination of malarial parasitaemia must be applied by skilled operators using standardized techniques
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