1,870 research outputs found

    The Objectification of Women in Cane

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    This thesis examines Jean Toomer\u27s Cane (1923) from a feminist perspective. Using Laura Mulvey\u27s film theory of the male gaze , it repurposes it and uses the theory from a literary standpoint. Throughout this thesis, many different aspects are examined including the character interaction within the stories, the use of the narrative I and its overarching implications, audience participation with regard to voyeurism and Toomer\u27s paradoxical stance on the objectification of women. Toomer writes about the women in Cane in a sexually explicit fashion, but does so in order to draw attention to the gaze and criticize it. As the vignettes in Cane progress, the women--some complacent with the gaze, others even participants--gain agency and the ability to return the male gaze, culminating in a possible relationship between Kabnis and Carrie K., a relationship of equal

    Exploring binary black hole mergers and host galaxies with {\sc Shark} and COMPAS

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    In this work, we explore the connection between the gravitational wave (GW) merger rates of stellar-mass binary black holes (BBH) and galaxy properties. We do this by generating populations of stars using the binary synthesis code COMPAS and evolving them in galaxies from the semi-analytic galaxy formation model {\sc Shark}, to determine the number of mergers occurring in each simulation time-step. We find that large, metal-rich galaxies with high star formation rates are more likely to have gravitational wave (GW) events compared to younger, more metal poor galaxies. Our simulation with the default input parameters predicts a higher local merger rate density compared to the third gravitational wave transient catalogue (GWTC-3) prediction from LIGO, VIRGO and KAGRA. This is due to short coalescence times, low metallicities and an high formation rate of stars at low redshift in the galaxy simulation, which produces more BBHs that merge within the age of the Universe compared to observations. We identify alternate remnant mass models that more accurately reproduce the observed volumetric rate and provide updated fits to the merger rate distribution as a function of redshift. We then investigate the relative fraction of GW events in our simulation volume that are in observable host galaxies from different upcoming photometric and spectroscopic surveys, determining which of those are more ideal for tracing host galaxies with high merger rates. The implications of this work can be utilised for numerous applications, including for constraining stellar evolution models, better informing follow-up programs, and placing more informative priors on potential host galaxies when measuring cosmological parameters such as the Hubble constant.Comment: 19 pages, 16 figures - Will be submitted to MNRA

    Red Mite on Blackberry [Acalitus essigi (Hassan)]

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    Redberry mite is a microscopic pest of blackberry that causes drupelets (small fruit sections) to remain hard and red (or less commonly hard and green) on an otherwise normally-ripened blackberry. The red drupelets can occur from a single drupelet to the entire berry. Redberry mite largely affects late-maturing blackberry varieties. Once it is detected, control is ineffective for that season\u27s crop; control can be obtained in subsequent seasons by a variety of management practices. It was first reported in Utah in 2017 in Davis Count

    Stability enhancing N-Terminal PEGylation of oxytocin exploiting different polymer architectures and conjugation approaches

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    Oxytocin, a cyclic nine amino acid neurohypophyseal hormone therapeutic, is effectively used in the control of postpartum hemorrhaging (PPH) and is on the WHO List of Essential Medicines. However, oxytocin has limited shelf life stability in aqueous solutions, particularly at temperatures in excess of 25 °C and injectable aqueous oxytocin formulations require refrigeration (<8 °C). This is particularly problematic in the hot climates often found in many developing countries where daytime temperatures can exceed 40 °C and where reliable cold-chain storage is not always achievable. The purpose of this study was to develop N-terminal amine targeted PEGylation strategies utilizing both linear PEG and polyPEG “comb” polymers as an effective method for stabilizing solution formulations of this peptide for prolonged storage in the absence of efficient cold-chain storage. The conjugation chemistries investigated herein include irreversible amine targeted conjugation methods utilizing NHS ester and aldehyde reductive amination chemistry. Additionally, one reversible conjugation method using a Schiff base approach was explored to allow for the release of the native peptide, thus, ensuring that biological activity remains unaffected. The reversibility of this approach was investigated for the different polymer architectures, alongside a nonpolymer oxytocin analogue to monitor how pH can tune native peptide release. Elevated temperature degradation studies of the polymer conjugates were evaluated to assess the stability of the PEGylated analogues in comparison to the native peptide in aqueous formulations to mimic storage conditions in developing nations and regions where storage under appropriate conditions is challenging

    Prenatal Programming of Human Neurological Function

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    The human placenta expresses the genes for proopiomelanocortin and the major stress hormone, corticotropin-releasing hormone (CRH), profoundly altering the “fight or flight” stress system in mother and fetus. As pregnancy progresses, the levels of these stress hormones, including maternal cortisol, increase dramatically. These endocrine changes are important for fetal maturation, but if the levels are altered (e.g., in response to stress), they influence (program) the fetal nervous system with long-term consequences. The evidence indicates that fetal exposure to elevated levels of stress hormones (i) delays fetal nervous system maturation, (ii) restricts the neuromuscular development and alters the stress response of the neonate, (iii) impairs mental development and increases fearful behavior in the infant, and (iv) may result in diminished gray matter volume in children. The studies reviewed indicate that fetal exposure to stress peptides and hormones exerts profound programming influences on the nervous system and may increase the risk for emotional and cognitive impairment

    Budget Processes: Theory and Experimental Evidence

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    This paper studies budget processes, both theoretically and experimentally. We compare the outcomes of bottom-up and top-down budget processes. It is often presumed that a top-down budget process leads to a smaller overall budget than a bottom-up budget process. Ferejohn and Krehbiel (1987) showed theoretically that this need not be the case. We test experimentally the theoretical predictions of their work. The evidence from these experiments lends strong support to their theory, both at the aggregate and the individual subject level

    Patterns of brain structural connectivity differentiate normal weight from overweight subjects

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    AbstractBackgroundAlterations in the hedonic component of ingestive behaviors have been implicated as a possible risk factor in the pathophysiology of overweight and obese individuals. Neuroimaging evidence from individuals with increasing body mass index suggests structural, functional, and neurochemical alterations in the extended reward network and associated networks.AimTo apply a multivariate pattern analysis to distinguish normal weight and overweight subjects based on gray and white-matter measurements.MethodsStructural images (N = 120, overweight N = 63) and diffusion tensor images (DTI) (N = 60, overweight N = 30) were obtained from healthy control subjects. For the total sample the mean age for the overweight group (females = 32, males = 31) was 28.77 years (SD = 9.76) and for the normal weight group (females = 32, males = 25) was 27.13 years (SD = 9.62). Regional segmentation and parcellation of the brain images was performed using Freesurfer. Deterministic tractography was performed to measure the normalized fiber density between regions. A multivariate pattern analysis approach was used to examine whether brain measures can distinguish overweight from normal weight individuals.Results1. White-matter classification: The classification algorithm, based on 2 signatures with 17 regional connections, achieved 97% accuracy in discriminating overweight individuals from normal weight individuals. For both brain signatures, greater connectivity as indexed by increased fiber density was observed in overweight compared to normal weight between the reward network regions and regions of the executive control, emotional arousal, and somatosensory networks. In contrast, the opposite pattern (decreased fiber density) was found between ventromedial prefrontal cortex and the anterior insula, and between thalamus and executive control network regions. 2. Gray-matter classification: The classification algorithm, based on 2 signatures with 42 morphological features, achieved 69% accuracy in discriminating overweight from normal weight. In both brain signatures regions of the reward, salience, executive control and emotional arousal networks were associated with lower morphological values in overweight individuals compared to normal weight individuals, while the opposite pattern was seen for regions of the somatosensory network.Conclusions1. An increased BMI (i.e., overweight subjects) is associated with distinct changes in gray-matter and fiber density of the brain. 2. Classification algorithms based on white-matter connectivity involving regions of the reward and associated networks can identify specific targets for mechanistic studies and future drug development aimed at abnormal ingestive behavior and in overweight/obesity

    De novo Assembly of the Burying Beetle Nicrophorus orbicollis (Coleoptera: Silphidae) Transcriptome Across Developmental Stages with Identification of Key Immune Transcripts

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    Burying beetles (Nicrophorus spp.) are among the relatively few insects that provide parental care while not belonging to the eusocial insects such as ants or bees. This behavior incurs energy costs as evidenced by immune deficits and shorter life-spans in reproducing beetles. In the absence of an assembled transcriptome, relatively little is known concerning the molecular biology of these beetles. This work details the assembly and analysis of the Nicrophorus orbicollis transcriptome at multiple developmental stages. RNA-Seq reads were obtained by next-generation sequencing and the transcriptome was assembled using the Trinity assembler. Validation of the assembly was performed by functional characterization using Gene Ontology (GO), Eukaryotic Orthologous Groups (KOG), and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses. Differential expression analysis highlights developmental stage-specific expression patterns, and immunity-related transcripts are discussed. The data presented provides a valuable molecular resource to aid further investigation into immunocompetence throughout this organism’s sexual development
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