211 research outputs found

    Connectivity Series at RIT- Developing & Delivering an Effective Professional Development Workshop Series for Women Faculty in STEM

    Get PDF
    In science, technology, engineering and math (STEM) disciplines within the United States; women faculty are underrepresented within many disciplines including engineering, computer science, and physics. At a large private university, RIT, the ADVANCE institutional transformation project (supported by NSF Award No. 1209115), referred to as Advance RIT, aims to increase the representation and advancement of women STEM faculty (which includes social and behavioral sciences, SBS) by removing barriers to resources that support career success and by creating new interventions and resources. This paper reports on the design, delivery and evaluation of a professional development workshop series, called the Connectivity Series, which is a vital initiative within this large-scale, multi-year, strategic institutional transformation project. The workshop series consists of programs to promote the recruitment, retention, and advancement of women faculty. The project team developed workshop themes based upon the results of a faculty climate survey and a literature review as part of a previously conducted NSF ADVANCE funded self-study (0811076). Project researchers created the Connectivity Series for all tenure-track women faculty on campus as well as targeted workshops for women of color and deaf and hard of hearing women faculty. All disciplines represented within the university (STEM and non-STEM) have been identified as the target audience for workshop offerings due to the high prevalence of STEM disciplines within the university. Program assessment and evaluation results are presented. In addition, a sustainability plan is outlined for continuation of these targeted workshops beyond the five-year grant funding period

    Herbivores at the Highest Risk of Extinction Among Mammals, Birds, and Reptiles

    Get PDF
    As a result of their extensive home ranges and slow population growth rates, predators have often been perceived to suffer higher risks of extinction than other trophic groups. Our study challenges this extinction-risk paradigm by quantitatively comparing patterns of extinction risk across different trophic groups of mammals, birds, and reptiles. We found that trophic level and body size were significant factors that influenced extinction risk in all taxa. At multiple spatial and temporal scales, herbivores, especially herbivorous reptiles and large-bodied herbivores, consistently have the highest proportions of threatened species. This observed elevated extinction risk for herbivores is ecologically consequential, given the important roles that herbivores are known to play in controlling ecosystem function

    Long-term age-dependent behavioral changes following a single episode of fetal N-methyl-D-Aspartate (NMDA) receptor blockade

    Get PDF
    BACKGROUND: Administration of the N-methyl-D-aspartate (NMDA) antagonist ketamine during the perinatal period can produce a variety of behavioral and neuroanatomical changes. Our laboratory has reported reliable changes in learning and memory following a single dose of ketamine administered late in gestation. However, the nature of the drug-induced changes depends on the point during embryonic development when ketamine is administered. Embryonic day 18 (E18) rat fetuses pre-treated with ketamine (100 mg/kg, i.p. through the maternal circulation) and taught a conditioned taste aversion (CTA) learn and remember the CTA, whereas E19 fetuses do not. The current study sought to determine if long-term behavioral effects could be detected in animals that received ketamine or a saline control injection on either E18 or E19. Rat behavior was evaluated on two different measures: spontaneous locomotion and water maze learning. Measurements were collected during 2 periods: Juvenile test period [pre-pubertal locomotor test: Postnatal Day 11 (P11); pre-pubertal water maze test: P18] or Young-adult test period [post-pubertal locomotor test: P60; post-pubertal water maze test: P81]. RESULTS: Water maze performance of ketamine-treated rats was similar to that of controls when tested on P18. Likewise, the age of the animal at the time of ketamine/saline treatment did not influence learning of the maze. However, the young-adult water maze test (P81) revealed reliable benefits of prenatal ketamine exposure – especially during the initial re-training trial. On the first trial of the young adult test, rats treated with ketamine on E18 reached the hidden platform faster than any other group – including rats treated with ketamine on E19. Swim speeds of experimental and control rats were not significantly different. Spontaneous horizontal locomotion measured during juvenile testing indicated that ketamine-treated rats were less active than controls. However, later in development, rats treated with ketamine on E18 were more active than rats that received the drug on E19. CONCLUSION: These data suggest that both the day in fetal development when ketamine is administered and the timing of post-natal behavioral testing interact to influence behavioral outcomes. The data also indicate that the paradoxical age-dependent effects of early ketamine treatment on learning, previously described in fetuses and neonates, may also be detected later in young adult rats

    Gene products and processes contributing to lanthanide homeostasis and methanol metabolism in \u3cem\u3eMethylorubrum extorquens\u3c/em\u3e AM1

    Get PDF
    Lanthanide elements have been recently recognized as “new life metals” yet much remains unknown regarding lanthanide acquisition and homeostasis. In Methylorubrum extorquens AM1, the periplasmic lanthanide-dependent methanol dehydrogenase XoxF1 produces formaldehyde, which is lethal if allowed to accumulate. This property enabled a transposon mutagenesis study and growth studies to confirm novel gene products required for XoxF1 function. The identified genes encode an MxaD homolog, an ABC-type transporter, an aminopeptidase, a putative homospermidine synthase, and two genes of unknown function annotated as orf6 and orf7. Lanthanide transport and trafficking genes were also identified. Growth and lanthanide uptake were measured using strains lacking individual lanthanide transport cluster genes, and transmission electron microscopy was used to visualize lanthanide localization. We corroborated previous reports that a TonB-ABC transport system is required for lanthanide incorporation to the cytoplasm. However, cells were able to acclimate over time and bypass the requirement for the TonB outer membrane transporter to allow expression of xoxF1 and growth. Transcriptional reporter fusions show that excess lanthanides repress the gene encoding the TonB-receptor. Using growth studies along with energy dispersive X-ray spectroscopy and transmission electron microscopy, we demonstrate that lanthanides are stored as cytoplasmic inclusions that resemble polyphosphate granules

    Marine climate and hydrography of the Coralline Crag (early Pliocene, UK): isotopic evidence from 16 benthic invertebrate taxa.

    Get PDF
    The taxonomic composition of the biota of the Coralline Crag Formation (early Pliocene, eastern England) provides conflicting evidence of seawater temperature during deposition, some taxa indicating cool temperate conditions by analogy with modern representatives or relatives, others warm temperate to subtropical/tropical conditions. Previous isotopic (δ18O) evidence of seasonal seafloor temperatures from serial ontogenetic sampling of bivalve mollusk shells indicated cool temperate winter (< 10 °C) and/or summer (< 20 °C) conditions but was limited to nine profiles from two species, one ranging into and one occurring exclusively in cool temperate settings at present. We supplement these results with six further profiles from the species concerned and supply seven more from three other taxa (two supposedly indicative of warm waters) to provide an expanded and more balanced database. We also supply isotopic temperature estimates from 81 spot and whole-shell samples from these five taxa and 11 others, encompassing ‘warm’, ‘cool’ and ‘eurythermal’ forms by analogy with modern representatives or relatives. Preservation tests show no shell alteration. Subject to reasonable assumptions about water δ18O, the shell δ18O data either strongly indicate or are at least consistent with cool temperate seafloor conditions. The subtropical/tropical conditions suggested by the presence of the bryozoan Metrarabdotos did not exist. Microgrowth-increment and δ13C evidence indicate summer water-column stratification during deposition of the Ramsholt Member, unlike in the adjacent southern North Sea at present (well mixed due to shallow depth and strong tidal currents). Summer maximum surface temperature was probably about 5 °C above seafloor temperature and thus often slightly higher than now (17–19 °C rather than 16–17 °C), but only sometimes in the warm temperate range. Winter minimum surface temperature was below 10 °C and possibly the same as at present (6–7 °C). An expanded surface temperature range compared to now may reflect withdrawal of oceanic heat supply in conjunction with higher global temperature.British Geological Survey (BUFI S157), NERC Isotope Geoscience Facilities (IP-1155- 1109

    Girl meets girl: sexual sitings in lesbian romantic comedies

    Get PDF
    Hollywood romantic comedies are, by and large, an ideologically conservative genre. Based around gender stereotypes and the idealised pursuit, however disguised, of heteropatriarchal monogamy, Hollywood romantic comedies offer countless variations of heteronormative ‘intimacy’. How, then, does the shift from ‘boy meets girl’ to ‘girl meets girl’ in lesbian romantic comedies—a genre that emerged in 1994 with the release of films like Bar Girls and Go Fish—effect the representation of intimacy? This chapter focuses on Better than Chocolate to investigate how lesbian intimacies, and lesbian sex in particular, occupy space. Where are lesbian intimacies sited and what, if any, negotiations of space are triggered through the embodiment of those intimacies? Ultimately, this chapter argues that through an unusually explicit emphasis on sex, Better than Chocolate draws attention to the limited public mobility of lesbian intimacies through a consistent siting of lesbian sex as a site of spatial negotiation

    Population Attributable Fractions for Late Postnatal Mother-to-Child Transmission of HIV-1 in Sub-Saharan Africa

    Get PDF
    Assess population attributable fractions (PAFs) for late postnatal transmission (LPT) of human immunodeficiency virus-1 (HIV-1) in a cohort of HIV-1-exposed infants

    The Public Playground Paradox: "Child’s Joy" or Heterotopia of Fear?

    Get PDF
    Literature depicts children of the Global North withdrawing from public space to“acceptable islands”. Driven by fears both of and for children, the publicplayground – one such island – provides clear-cut distinctions between childhoodand adulthood. Extending this argument, this paper takes the original approach oftheoretically framing the playground as a heterotopia of deviance, examining –for the first time – three Greek public playground sites in relation to adjacentpublic space. Drawing on an ethnographic study in Athens, findings show fear tounderpin surveillance, control and playground boundary porosity. Normativeclassification as “children’s space” discourages adult engagement. However, in anovel and significant finding, a paradoxical phenomenon sees the playground’spresence simultaneously legitimizing playful behaviour in adjacent public spacefor children and adults. Extended playground play creates alternate orderings andnegotiates norms and hierarchies, suggesting significant wider potential toreconceptualise playground-urban design for an intergenerational public realm
    • …
    corecore