1,491 research outputs found

    Effects of Group Living on Pupation in a Lady Beetle

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    To further understand the lives and development habits of insects, we must know how they influence each other through pupation periods. This will ultimately help us understand how interactive insects are throughout their life. To answer this question, we tested the pupation rates of Hippodamia convergens in groups and alone. This will help us delineate the advantages or disadvantages of the organism in groups versus singular pupation. We hypothesized that the Lady Beetles reared alone will develop faster and have a higher growth rate than those reared in groups. During the experiment, the subjects engaged in cannibalism which could have affected our results. Cannibalism occurs when food in the environment is scarce, and although the Lady Beetles were fed, the amounts that were given may not have been proper for their size nor consistent with each group member. At the end of this experiment we saw that the specimens reared in groups pupated more consistently than those reared alone. We assume that the reason Lady Beetles in groups pupated more consistently is because of the stressors in their environment, while the ones alone did not have any stressors. These conclusions may be important because it will help us determine the factors that influence pupation before and during the process in relation to other species of insects

    Resistant and Susceptible Sorghum

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    In the year 2015, the USA produced 597 Million bushels of sorghum and planted 7.85 million acres. Kansas produced 281.6 million bushels and planted 3.2 million acres. With Green bug aphid and the sugarcane aphid a major pest of the sorghum crop in Kansas and sorghum being the 3rd top crop commodity in Kansas if a big infestation comes in could hurt agriculture industry as a whole. In the sorghum industry they have developed varieties that are resistance to specific types of aphids but one variety maybe resistance to one type of aphid but susceptible to another type. My project was to compare two type of aphids on 2 different varieties of sorghum and see how a resistance variety and a susceptible variety are affected by aphids. The resistance varieties will have less damage done by the aphids to the plant compared to the susceptible variety. These results are important in the state of Kansas due to Kansas being ranked 7th in the nation in agriculture production. Being an Animal Science and Industries major with the production option, milo seed is a product of sorghum, similar to corn and sometimes cheaper, we can use milo seed in feed to produce the same amount in livestock industry for less money so our production can be more profitable

    Head Impact Biomechanics Differ Between Girls and Boys Youth Ice Hockey Players

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    The influence of sex on head impact biomechanics is unknown for youth ice hockey. We sought to determine sex differences in head impact severity and frequency in youth ice hockey players. Male (n = 110) and female (n = 25) players (13–16 years old) were recruited from a local hockey organization. Players wore helmets instrumented with the Head Impact Telemetry System for all competitions and practices throughout the season. Seven team-seasons were captured. Random intercepts general mixed linear models determined whether linear acceleration and rotational acceleration differed by sex. Linear regression models evaluated the relationship between sex and impact frequency. All head impact biomechanics were natural log-transformed as their distributions were right-skewed. Females sustained fewer impacts per player than males (27 fewer impacts per player-season, p < 0.0001) even when analysis was limited to games only (21 fewer impacts per player-season, p < 0.0001). The linear acceleration was higher among females (1.07 g; 95% CI 1.00, 1.13; p = 0.04). There were no other meaningful sex differences in head impact severity. Female players are not permitted to body check, and this likely explains why they sustain fewer head impacts than males. However, as a result, females likely sustain a higher proportion of head impacts through illegal or unintentional head contact, and these impacts may result in more force being delivered to the head

    The impact of the COVID-19 pandemic on a cohort of adults with epilepsy

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    Objectives: The aim of this study was to assess the direct and indirect impacts of the COVID-19 pandemic on adults with epilepsy in Glasgow. Methods: We used routinely collected data for a previously identified cohort of patients with epilepsy to evaluate access to scheduled and unscheduled care with quarterly rates of inpatient admissions, outpatient attendance and accident &amp; emergency attendance calculated. Anti-seizure medication prescribing and persistence, incidence of anxiety and depression and deaths for a cohort of patients with epilepsy was evaluated prior to the pandemic in comparison to during the pandemic, from 2015 to 2021. Results: All-cause mortality and epilepsy related mortality showed a statistically significant reduction during the pandemic. Although overall rates of out-patient hospital attendance dropped during the early stages of the pandemic (and had not returned to pre-pandemic levels by the end of 2021) epilepsy-related services saw a maintenance of patient contact as a result of a rapid adoption of telephone clinics. A significant decrease in overall mortality was observed in PWE during the pandemic compared to the pre-pandemic period. COVID-19 was the single commonest cause of death in PWE during the pandemic (61/453) and 160 patients (3.7%) had at least 1 admission to hospital for COVID-19. Anti-seizure medication (ASM) prescribing remained rates remained stable during the pandemic. During the pandemic an average of 38.8% of cohort patients were treated for depression and 16.3% for anxiety per quarter, 8.2% and 12.4% of whom had not been previously treated for these conditions respectively. Conclusion: We have shown that during a national lockdown, in the context of a pandemic, mortality in patients with epilepsy has reduced, while out-patient services were delivered remotely, primarily via the telephone. The reasons for this remain unclear but suggest that some of the excess mortality in people with epilepsy may be potentially avoidable by changes in lifestyle

    The Health Belief Model Applied to Understanding Diabetes Regimen Compliance

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    Inadequate adherence to prescribed treatment plans is perhaps the most serious obstacle to achieving success ful therapeutic outcomes, and non compliance by diabetic patients is no exception. This is partly based on pa tients' realization that compliance does not necessarily result in lack of illness. A psychosocial framework for under standing patient compliance is the Health Belief Model, which is based upon the value an individual places on the identified goal and the likelihood that compliance will achieve that goal. This Model has been useful to explain noncompliance, to make an "educa tional diagnosis," and for designing compliance-enhancing interventions.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/68410/2/10.1177_014572178501100108.pd

    Girls’ and women’s education within Unesco and the World Bank, 1945–2000

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    By 2000, girls’ and women’s education was a priority for international development organisations. While studies have examined the impact of recent campaigns and programmes, there has been less exploration of ideas about girls’ and women’s education within development thought in the immediate post?colonial period, and the political mechanisms through which this came to be a global concern. Through a study of policy documents, this paper investigates how the education of girls and women came to be prioritised within the two principle UN agencies involved with education since 1945, the World Bank and Unesco. A shift in priorities is evident, from ensuring formal rights and improving the status of women, to expanding the productive capacities of women, fertility control and poverty reduction. While the ascendance of human capital theory provided a space for a new perception of the role of women’s education in development, in other policy arenas women’s education was central to exploring more substantive, rights?based notions of gender equality. Ultimately, the goal of improving girls’ and women’s education fitted into diverse development agendas, paving the way for it to become a global development priority

    A comparative study of electronic cigarette vapour extracts on airway-related cell lines in vitro

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    The use of electronic cigarettes (ECs) is rapidly increasing worldwide; however, scientific evidence regarding EC cytotoxicity is limited. The aim of this study was to evaluate the acute cytotoxicity of EC vapor extract (ECE) on airway-related cells in vitro. Cigarette smoke extract (CSE), vapor extract of fifteen brands/flavors of ECs and the extract from the E-vehicle (propylene glycol and glycerin) was collected. Extracts, in concentrations of 100–12.5%, were added to human bronchial epithelial (BEAS-2B, IB3-1 and C38), fibroblast (Wi-38) and macrophage (J774 and THP-1) cell lines. Viability was assessed after 24 h using a standard XTT assay. Viability of <70% of control (no extract) was considered cytotoxic according to UNI EN ISO 10993-5 standards. CSE displayed a concentration-dependent influence on cell viability across all four cell lines with 100% producing the most toxic effect, therefore validating the model and indicating higher cytotoxicity than in ECEs. ECEs did reduce viability although this was not correlated with nicotine content or the E-vehicle. However, several flavors proved cytotoxic, with variation between different brands and cell lines. These data indicate that not all ECs are the same and that use of a particular flavor or brand may have differing effects. The cell line used is also an important factor. More research is crucial to ascertain the health effects of different ECs before they can be accepted as a safe alternative to tobacco cigarettes

    X-Ray Scattering Measurements of the Transient Structure of a Driven Charge-Density-Wave

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    We report time-resolved x-ray scattering measurements of the transient structural response of the sliding {\bf Q}1_{1} charge-density-wave (CDW) in NbSe3_{3} to a reversal of the driving electric field. The observed time scale characterizing this response at 70K varies from ∼\sim 15 msec for driving fields near threshold to ∼\sim 2 msec for fields well above threshold. The position and time-dependent strain of the CDW is analyzed in terms of a phenomenological equation of motion for the phase of the CDW order parameter. The value of the damping constant, γ=(3.2±0.7)×10−19\gamma = (3.2 \pm 0.7) \times 10^{-19} eV ⋅\cdot seconds ⋅\cdot \AA−3^{-3}, is in excellent agreement with the value determined from transport measurements. As the driving field approaches threshold from above, the line shape becomes bimodal, suggesting that the CDW does not depin throughout the entire sample at one well-defined voltage.Comment: revtex 3.0, 7 figure

    Evaluating the "threshold Theory": Can Head Impact Indicators Help?

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    Purpose This study aimed to determine the clinical utility of biomechanical head impact indicators by measuring the sensitivity, specificity, positive predictive value (PV+), and negative predictive value (PV-) of multiple thresholds. Methods Head impact biomechanics (n = 283,348) from 185 football players in one Division I program were collected. A multidisciplinary clinical team independently made concussion diagnoses (n = 24). We dichotomized each impact using diagnosis (yes = 24, no = 283,324) and across a range of plausible impact indicator thresholds (10g increments beginning with a resultant linear head acceleration of 50g and ending with 120g). Results Some thresholds had adequate sensitivity, specificity, and PV-. All thresholds had low PV+, with the best recorded PV+ less than 0.4% when accounting for all head impacts sustained by our sample. Even when conservatively adjusting the frequency of diagnosed concussions by a factor of 5 to account for unreported/undiagnosed injuries, the PV+ of head impact indicators at any threshold was no greater than 1.94%. Conclusions Although specificity and PV- appear high, the low PV+ would generate many unnecessary evaluations if these indicators were the sole diagnostic criteria. The clinical diagnostic value of head impact indicators is considerably questioned by these data. Notwithstanding, valid sensor technologies continue to offer objective data that have been used to improve player safety and reduce injury risk
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