901 research outputs found
Anatomical and experimental studies on the neuropeptides immunoreactive neuronal system in the rat brain
Imperial Users onl
Criteria for selecting materials suitable for application to modified atmosphere packaging of fish
The process of preservation is an important step in stabilizing perishable items in order for them to withstand distribution, handling, and storage. Preservation can be achieved by several methods, but the method of concern in this paper is that of modified atmosphere storage which is reported to extend the shelf-lives of perishable products. Studies on modified atmosphere storage have emphasized the preservating action of carbon dioxide (CO2) in reducing (1) the extent of microbial spoilage, and (2) the tissue pH of the products so stored in comparison to those stored aerobically. Low tissue pH creates unfavourable environment which negatively influences the growth of spoilage bacteria. This paper will deal only with modified atmosphere packaging and reduction of aerobic microbial action. The emphasis is on preserving fresh fish for resale. This work explores modified atmosphere packaging and cold storage as two methods used in conjunction to accomplish fresh fish marketing. As a first step in this investigation, this study attempts to: (1) establish criteria for selecting materials for primary packages for modified atmosphere preserved fish, and (2) describe a test to evaluate the suitability of flexible materials for application to modified atmosphere packaged fish. Suitability of materials for application to modified atmosphere packaged fish is determined by their rate of permeability to CO2 nitrogen (N2), and oxygen (O2) - the gases commonly used in modified atmosphere preservation. The rate of permeability of the materials to these gases is determined by gas chromatography
Landscapes of Helping: Kindliness in Neighbourhoods and Communities
Increasing geographical mobility, economic change and the rise of an individualist culture in the UK have contributed to the loosening of close ties in communities. Communities need to evolve, to reconnect, so that people cultivate the âbackground humâ of sociability that has been associated with neighbourliness. This âbackground humâ is characterised by peopleâs awareness of each other, by a respect for each otherâs privacy and by a readiness to take action if help is needed. In this research we define kindliness as âneighbourliness enactedâ and describe the process of reconnection within communities as the âreinvention of socialityâ. Hebden Bridgeâs relative success in melding traditional and more contemporary forms of sociality helps to identify some broader lessons about fostering kindliness in neighbourhoods and communities
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A brief history of the British Neuroscience Association
As the British Neuroscience Association commemorates 50 years of existence in 2018, this article recalls its founding as a discussion group, its establishment as the Brain Research Association, its transition to a professional society encompassing all aspects of neuroscience research, both clinical and non-clinical, and its re-branding as the British Neuroscience Association in the late 1990s. Neuroscience as a branch of life science has expanded hugely in the last 25 years and the British Neuroscience Association has adapted, frequently working with partner societies, to serve as an interdisciplinary hub for professionals working in this exciting and crucial field. The authors have attempted to highlight some key events in the Associationâs history and acknowledge the contributions made by many people over half a century
Offspring size plasticity in response to intraspecific competition: An adaptive maternal effect across life-history stages
When provisioning offspring, mothers balance the benefits of producing a few large, fitter offspring with the costs of decreased fecundity. The optimal balance between offspring size and fecundity depends on the environment. Theory predicts that larger offspring have advantages in adverse conditions, but in favorable conditions size is less important. Thus, if environmental quality varies, selection should favor mothers that adaptively allocate resources in response to local conditions to maximize maternal fitness. In the bryozoan Bugula neritina, we show that the intensity of intraspecific competition dramatically changes the offspring size/performance relationship in the field. In benign or extremely competitive environments, offspring size is less important, but at intermediate levels of competition, colonies from larger larvae have higher performance than colonies from smaller larvae. We predicted mothers should produce larger offspring when intermediate competition is likely and tested these expectations in the field by manipulating the density of brood colonies. Our findings matched expectations: mothers produced larger larvae at high densities and smaller larvae at low densities. In addition, mothers from highâdensity environments produced larvae that have higher dispersal potential, which may enable offspring to escape crowded environments. It appears mothers can adaptively adjust offspring size to maximize maternal fitness, altering the offspring phenotype across multiple lifeâhistory stages
Multislice CT angiography in the follow-up of fenestrated endovascular grafts: Effect of slice thickness on 2D and 3D visualization of the fenestrated stents
Purpose: To investigate the effect of multislice computed tomography (CT) protocols on the visualization of target vessel stents in patients with treated with fenestrated endovascular grafts.Methods: Twenty-one patients (19 men; mean age 75 years, range 63?86) undergoing fenestrated endovascular repair of abdominal aortic aneurysm (AAA) were retrospectively studied. Multislice CT angiography was performed with several protocols, and the section thicknesses used in each were compared to identify any relationship between slice thickness and target vessel stents visualized on 2-dimensional (2D) axial, multiplanar reformatted (MPR), and 3-dimensional (3D) virtual intravascular endoscopy (VIE) images. Image quality was assessed based on the degree of artifacts and their effect on the ability to visualize the configuration, intra-aortic location, and intraluminal appearance of the target vessel stents and measure their protrusion into the aortic lumen.Results: There were 7 different multislice CT scanning protocols employed in the 21 patients (25 datasets, with 2 sets of follow-up images in 4 patients). The slice thicknesses and numbers (n) of studies included were 0.5 (n=3), 0.625 (n=6), 1.0 (n=1), 1.25 (n=9), 2.5 (n=3), 3.0 (n=1), and 5.0 mm (n=2). Of these CT protocols, images (especially 2D/3D reconstructions) acquired at 2.5, 3.0, and 5.0 mm were significantly compromised by interference from artifacts. Images acquired with a slice thickness of 1.0 or 1.25 mm were scored equally or lower than those acquired with a submillimeter section thickness (0.5 or 0.625 mm), with minor degrees of artifacts resulting in acceptable image quality.Conclusion: Visualization of the target vessel stents depends on the appropriate selection of multislice CT scanning protocols. Our results showed that studies performed with a slice thickness of 1.0 or 1.25 mm produced similar image quality to those with a thickness of 0.5 or 0.625 mm. Submillimeter slices are not recommended in imaging patients treated with fenestrated stent-grafts, as they did not add additional information to the visualization
The RUMERTIME Process as a Protective Factor in School Attendance Problems
The RUMERTIME Process (RP) is a five-step culturally responsive social-emotional, problem-solving, prevention-intervention strategy used to educate, equip, and empower students, educators, and families. The RP equips individuals with the abilities to recognize, understand, manage, express, and reflect on their thoughts, interactions, mindsets, and emotions (RUMERTIME) in relation to themselves, others, and the daily life challenges they face within multiple systems and settings. The RP is embedded within the Cultivating SEEDS System framework (CSS) and is utilized to equip culturally diverse communities, inclusive of students, family members, educators, and administrators, with the social-emotional skills to effectively solve student attendance problems (SAPs). The data shared in this practice intervention article are descriptive in nature and highlight the RP as a protective factor and explain its three goals. The paper consists of three parts: (a) introduction of the RP, which is embedded in the CSS framework; (b) description of implementation of the RP as integral to the Daytime Intervention Room (DIR) program; and (c) discussion of risk factors that qualified students to receive services through the DIR program as well as data that demonstrated how the RP performed as a protective factor. The DIR program was aimed at creating an alternative to out-of-school suspension (OSS) and the traditional punitive in-school suspension (ISS). The program was established in each of the four schools in an urban high-needs school district in the midwest region of the United States. The DIR program was intentionally designed to include multiple levels, stakeholders, and delivery support, thus creating a solid base for the holistic development of students, educators, and parents. In conjunction with the CSS framework, the DIR program sought to increase academic performance, decrease the number of behavior referrals, and improve attendance rates in this high-needs urban school district
Obstetric outcomes for women with severe mental illness : 10 years of experience in a tertiary multidisciplinary antenatal clinic
Purpose This study aims to describe 10 years of antenatal care and outcomes for women with a severe mental illness (SMI). Methods A retrospective cohort study of 420 completed pregnancy records over the last 10 years (2007-2017). Findings were compared to the Western Australian (WA) pregnancy data. Antenatal attendance, demographic, obstetric, neonatal and psychosocial variables were analysed using t tests, chi(2)(,) ANOVA and odds ratio (OR). Results Overall, women with a SMI had high rates of comorbidity (47%), antenatal complications, and preterm birth at 12.6% compared to WA mothers (p <0.001). Those with schizophrenia were at highest risk with increased risk of threatened preterm labour OR 8.25 (95% CI 4.64-14.65), gestational diabetes OR 3.59 (95% CI 2.18-5.91) and reduced likelihood of a spontaneous vaginal birth OR 0.46 (95% CI 0.29-0.71). Late presentation and antenatal attendance for women with SMI were significantly associated with maternal substance use, psychiatric admission during pregnancy, and child welfare involvement. Women with schizophrenia had significantly lower attendance rates at scheduled antenatal care (ANC) appointments than those with bipolar disease (87.1% vs 94%, p = 0.003). Conclusion Obstetric outcomes are poorer for women with SMI compared to the general population. They have higher rates of medical comorbidities, lifestyle and psychosocial risks factors that are known to contribute to poor obstetric outcomes. Effective delivery of regular and appropriate ANC is essential in addressing these multifactorial risks. Targeted strategies addressing comprehensive medical management, preterm birth prevention, lifestyle modifications and increased psychosocial support could improve both short- and long-term outcomes for these women and their children.Peer reviewe
Pregnancy experiences of Western Australian women attending a specialist childbirth and mental illness antenatal clinic
Our purpose was to explore the pregnancy experiences of Australian women attending a specialized Childbirth and Mental Illness (CAMI) antenatal clinic. A qualitative exploratory design was selected to give voice to women with a severe mental illness receiving antenatal care. Telephone interviews with 41 women, 24 primiparous and 17 multiparous, were analysed using thematic analysis. Three themes emerged: âBuilding relationshipsâ, âAcknowledged me as a person with special needsâ and âRespect and understanding without stigmaâ. Findings offer insight into care experiences possible within a multidisciplinary model developed to addresses psychiatric and obstetric needs of pregnant women with severe mental illness
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