99 research outputs found
Gaining interpretive competence through cross-cultural dialogue among teachers and researchers
We examined the complexities of developing and implementing school curricula that reflect the goals for equality for students outlined in the Canadian Multiculturalism Act. Stories of teaching and learning experiences were presented to teacher-researchers as a means of generating discussion about differences in perspective pertaining to the curricular needs of an ethnically diverse student population. We articulate this ongoing inquiry about how best to meet the needs of a diverse society in terms of enhancing a sense of ‘interpretive competence’ (Conle, 1997b, Conle et al., 2000, Conle, 2000).
ACQUÉRIR LA COMPÉTENCE INTERPRÉTATIVE GRÂCE AU DIALOGUE INTERCULTUREL ENTRE ENSEIGNANTS ET CHERCHEURS--Nous avons étudié les complexités inhérentes à l’élaboration et à l’application d’un programme scolaire qui tient compte des objectifs d’égalité pour les étudiants, tels qu’ils sont définis dans la Loi sur le multiculturalisme canadien. Différentes expériences d’enseignement et d’apprentissage ont été présentées aux enseignants-chercheurs en vue de susciter une discussion sur les différentes perspectives touchant les besoins en matière de programmes d’une population étudiante pluriethnique. Nous articulons cette recherche continue sur la meilleure façon de répondre aux besoins d’une société diversifiée en l’axant sur une forme de « compétence interprétative » (Conle, 1997b, Conle et al., 2000, Conle, 2000)
Monitoring and Habitat Assessment of Declining Bumble Bees in Roadsides in the Twin Cities Metro Area of Minnesota
Several bumble bee species have declined dramatically, including the endangered rusty-patched bumble bee, Bombus affinis. Roadsides offer a unique opportunity to increase habitat for these declining species. The objectives of this study are to: (1) characterize the bumble bee community and floral availability within roadsides in the Minneapolis and Saint Paul, Minnesota, metro area, (2) estimate detection probabilities and occupancy for bumble bees using occupancy modeling, (3) determine the effort needed to detect rusty-patched bumble bees, and (4) examine the relationship of the bumble bee community to the surrounding landscape. We use rapid and broad-scale sampling at randomly selected locations. Despite overall low floral abundance, many bumble bee species, including rare and declining species, use roadsides. Occupancy models predict rusty-patched bumble bees occupy 4% of sites, with a 30% chance of detection if it is at the site. We recommend performing nine surveys in a single season to be 95% sure that B. affinis is detected if it is there. Bumble bee abundances and species numbers increase with more wooded area and floral cover. Crops are negatively associated with bee abundance, species numbers, and the presence of rare bumble bees. Our management recommendations for roadsides to support rare and declining bumble bees are: (1) incorporate additional bumble bee forage, (2) when weed control requires elimination of flowering plants, replace with bumble bee forage, (3) use our estimates for occupancy and abundance as a baseline to assess conservation efforts for bumble bees within roadsides in the metropolitan area of Minneapolis and Saint Paul
The Candida albicans transcription factor Cas5 couples stress responses, drug resistance and cell cycle regulation
We thank Cowen lab members for helpful discussions. We also thank David Rogers (University of Tennessee) for sharing microarray analysis of the CAS5 homozygous mutant, and Li Ang (University of Macau) for assistance in optimizing the ChIP-Seq experiments. J.L.X. is supported by a Canadian Institutes of Health Research Doctoral award and M.D.L. is supported by a Sir Henry Wellcome Postdoctoral Fellowship (Wellcome Trust 096072). B.T.G. holds an Ontario Graduate Scholarship. C.B. and B.J.A. are supported by the Canadian Institutes of Health Research Foundation Grants (FDN-143264 and -143265). D.J.K. is supported by a National Institute of Allergy and Infectious Diseases grant (1R01AI098450) and J.D.L.C.D. is supported by the University of Rochester School of Dentistry and Medicine PREP program (R25 GM064133). A.S. is supported by the Creighton University and the Nebraska Department of Health and Human Services (LB506-2017-55). K.H.W. is supported by the Science and Technology Development Fund of Macau S.A.R. (FDCT; 085/2014/A2). L.E.C. is supported by the Canadian Institutes of Health Research Operating Grants (MOP-86452 and MOP-119520), the Natural Sciences and Engineering Council (NSERC) of Canada Discovery Grants (06261 and 462167), and an NSERC E.W.R. Steacie Memorial Fellowship (477598).Peer reviewedPublisher PD
Technological Advances to Address Current Issues in Entomology: 2020 Student Debates
The 2020 Student Debates of the Entomological Society of America (ESA) were live-streamed during the Virtual Annual Meeting to debate current, prominent entomological issues of interest to members. The Student Debates Subcommittee of the National ESA Student Affairs Committee coordinated the student efforts throughout the year and hosted the live event. This year, four unbiased introductory speakers provided background for each debate topic while four multi-university teams were each assigned a debate topic under the theme ‘Technological Advances to Address Current Issues in Entomology’. The two debate topics selected were as follows: 1) What is the best taxonomic approach to identify and classify insects? and 2) What is the best current technology to address the locust swarms worldwide? Unbiased introduction speakers and debate teams began preparing approximately six months before the live event. During the live event, teams shared their critical thinking and practiced communication skills by defending their positions on either taxonomical identification and classification of insects or managing the damaging outbreaks of locusts in crops
The Vehicle, Spring 1984
Vol. 25, No. 2
Table of Contents
The OpeningKathy Fordpage 3
PaintThomas B. Waltrippage 3
PhotographLisa Fresepage 4
City as Castigating AnimalJerry McAnultypage 5
LimitsMichelle Mitchellpage 6
In SilenceKeila Tooleypage 6
PhotographLisa Fresepage 7
Indian CreekJerry McAnultypage 8
The Right Idea about RainMichelle Mitchellpage 8
Van Gogh\u27s Young Male PeasantKeila Tooleypage 9
AbigailMaggie Kennedypage 9
CleaningJennifer K. Soulepage 10
Heat WaveJerry McAnultypage 11
VigilJanet Gracepage 11
Hatred of ClownsMichelle Mitchellpage 12
Trees in the YardKeila Tooleypage 13
Lost on Back RoadsToby Mirabellipage 13
The Death of My Father\u27s HandsGina Grillopage 14
Soft LandingMaggie Kennedypage 14
Incident in the Generic AisleMaggie Kennedypage 15
Happy Well-adjusted Individuals, ConsideringJennifer K. Soulepage 16
Old ManGina Grillopage 17
It Doesn\u27t MatterTed Boonepage 18
A Love Poem for Charles DonaldCathy Moepage 18
David Willey at Whitman WharfSue Oiler Millerpage 19
I Am the ArtsBrenda Renee Drummerpage 20
Mothers and DaughtersJennifer K. Soulepage 22
ScratchesMichelle Mitchellpage 26
SedativeStacey Flanniganpage 26
Calloused HandJanet Gracepage 27
Cool CatStacey Flanniganpage 27
For My History Teacher, Miss WilhelmCathy Moepage 28
Short Poem for Chris\u27s EyesBob Zordanipage 28
MissingMichelle Mitchellpage 29
Over ThereGraham Lewispage 30
Strange BedfellowsMaggie Kennedypage 31
Retired PlumberMichelle Mitchellpage 32
Rumors of War DeadKathy Fordpage 33
Night LightsKeila Tooleypage 33
Fish on the Train TracksJerry McAnultypage 34
DaddyKeily Tooleypage 34
A Message to the MessengerAmy Eadespage 35
Dancing AloneKathy Bowerpage 36
HandsMaggie Kennedypage 36
The Key to the Ladies\u27s RoomMichelle Mitchellpage 37
Crashing the BlueStacey Flanniganpage 37
The Cradle will FallMichelle Mitchellpate 38
One IslandKeila Tooleypage 38
Black Walnut PaintSue Oiler Millerpage 39
SerendipityGraham Lewispage 40
Cover ArtLisa Fresehttps://thekeep.eiu.edu/vehicle/1045/thumbnail.jp
Elevated A20 promotes TNF-induced and RIPK1-dependent intestinal epithelial cell death
Intestinal epithelial cell (IEC) death is a common feature of inflammatory bowel disease (IBD) that triggers inflammation by compromising barrier integrity. In many patients with IBD, epithelial damage and inflammation are TNF-dependent. Elevated TNF production in IBD is accompanied by increased expression of the TNFAIP3 gene, which encodes A20, a negative feedback regulator of NF-κB. A20 in intestinal epithelium from patients with IBD coincided with the presence of cleaved caspase-3, and A20 transgenic (Tg) mice, in which A20 is expressed from an IEC-specific promoter, were highly susceptible to TNF-induced IEC death, intestinal damage, and shock. A20-expressing intestinal organoids were also susceptible to TNF-induced death, demonstrating that enhanced TNF-induced apoptosis was a cell-autonomous property of A20. This effect was dependent on Receptor Interacting Protein Kinase 1 (RIPK1) activity, and A20 was found to associate with the Ripoptosome complex, potentiating its ability to activate caspase-8. A20-potentiated RIPK1-dependent apoptosis did not require the A20 deubiquitinase (DUB) domain and zinc finger 4 (ZnF4), which mediate NF-κB inhibition in fibroblasts, but was strictly dependent on ZnF7 and A20 dimerization. We suggest that A20 dimers bind linear ubiquitin to stabilize the Ripoptosome and potentiate its apoptosis-inducing activity
A protein interaction map for cell polarity development
Many genes required for cell polarity development in budding yeast have been identified and arranged into a functional hierarchy. Core elements of the hierarchy are widely conserved, underlying cell polarity development in diverse eukaryotes. To enumerate more fully the protein–protein interactions that mediate cell polarity development, and to uncover novel mechanisms that coordinate the numerous events involved, we carried out a large-scale two-hybrid experiment. 68 Gal4 DNA binding domain fusions of yeast proteins associated with the actin cytoskeleton, septins, the secretory apparatus, and Rho-type GTPases were used to screen an array of yeast transformants that express ∼90% of the predicted Saccharomyces cerevisiae open reading frames as Gal4 activation domain fusions. 191 protein–protein interactions were detected, of which 128 had not been described previously. 44 interactions implicated 20 previously uncharacterized proteins in cell polarity development. Further insights into possible roles of 13 of these proteins were revealed by their multiple two-hybrid interactions and by subcellular localization. Included in the interaction network were associations of Cdc42 and Rho1 pathways with proteins involved in exocytosis, septin organization, actin assembly, microtubule organization, autophagy, cytokinesis, and cell wall synthesis. Other interactions suggested direct connections between Rho1- and Cdc42-regulated pathways; the secretory apparatus and regulators of polarity establishment; actin assembly and the morphogenesis checkpoint; and the exocytic and endocytic machinery. In total, a network of interactions that provide an integrated response of signaling proteins, the cytoskeleton, and organelles to the spatial cues that direct polarity development was revealed
Effects of Terrestrial Buffer Zones on Amphibians on Golf Courses
A major cause of amphibian declines worldwide is habitat destruction or alteration. Public green spaces, such as golf courses and parks, could serve as safe havens to curb the effects of habitat loss if managed in ways to bolster local amphibian communities. We reared larval Blanchard's cricket frogs (Acris blanchardi) and green frogs (Rana clamitans) in golf course ponds with and without 1 m terrestrial buffer zones, and released marked cricket frog metamorphs at the golf course ponds they were reared in. Larval survival of both species was affected by the presence of a buffer zone, with increased survival for cricket frogs and decreased survival for green frogs when reared in ponds with buffer zones. No marked cricket frog juveniles were recovered at any golf course pond in the following year, suggesting that most animals died or migrated. In a separate study, we released cricket frogs in a terrestrial pen and allowed them to choose between mown and unmown grass. Cricket frogs had a greater probability of using unmown versus mown grass. Our results suggest that incorporating buffer zones around ponds can offer suitable habitat for some amphibian species and can improve the quality of the aquatic environment for some sensitive local amphibians
Solar Occultation Satellite Data and Derived Meteorological Products: Sampling Issues and Comparisons with Aura MLS
Derived Meteorological Products (DMPs, including potential temperature (theta), potential vorticity, equivalent latitude (EqL), horizontal winds and tropopause locations) have been produced for the locations and times of measurements by several solar occultation (SO) instruments and the Aura Microwave Limb Sounder (MLS). DMPs are calculated from several meteorological analyses for the Atmospheric Chemistry Experiment-Fourier Transform Spectrometer, Stratospheric Aerosol and Gas Experiment II and III, Halogen Occultation Experiment, and Polar Ozone and Aerosol Measurement II and III SO instruments and MLS. Time-series comparisons of MLS version 1.5 and SO data using DMPs show good qualitative agreement in time evolution of O3, N2O, H20, CO, HNO3, HCl and temperature; quantitative agreement is good in most cases. EqL-coordinate comparisons of MLS version 2.2 and SO data show good quantitative agreement throughout the stratosphere for most of these species, with significant biases for a few species in localized regions. Comparisons in EqL coordinates of MLS and SO data, and of SO data with geographically coincident MLS data provide insight into where and how sampling effects are important in interpretation of the sparse SO data, thus assisting in fully utilizing the SO data in scientific studies and comparisons with other sparse datasets. The DMPs are valuable for scientific studies and to facilitate validation of non-coincident measurements
Physiology and pathophysiology of the vasopressin-regulated renal water reabsorption
To prevent dehydration, terrestrial animals and humans have developed a sensitive and versatile system to maintain their water homeostasis. In states of hypernatremia or hypovolemia, the antidiuretic hormone vasopressin (AVP) is released from the pituitary and binds its type-2 receptor in renal principal cells. This triggers an intracellular cAMP signaling cascade, which phosphorylates aquaporin-2 (AQP2) and targets the channel to the apical plasma membrane. Driven by an osmotic gradient, pro-urinary water then passes the membrane through AQP2 and leaves the cell on the basolateral side via AQP3 and AQP4 water channels. When water homeostasis is restored, AVP levels decline, and AQP2 is internalized from the plasma membrane, leaving the plasma membrane watertight again. The action of AVP is counterbalanced by several hormones like prostaglandin E2, bradykinin, dopamine, endothelin-1, acetylcholine, epidermal growth factor, and purines. Moreover, AQP2 is strongly involved in the pathophysiology of disorders characterized by renal concentrating defects, as well as conditions associated with severe water retention. This review focuses on our recent increase in understanding of the molecular mechanisms underlying AVP-regulated renal water transport in both health and disease
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