2,529 research outputs found
Work Roll Cooling System Design Optimisation in Presence of Uncertainty
Organised by: Cranfield UniversityThe paper presents a framework to optimise the design of work roll based on the cooling performance. The
framework develops Meta models from a set of Finite Element Analysis (FEA) of the roll cooling. A design of
experiment technique is used to identify the FEA runs. The research also identifies sources of uncertainties
in the design process. A robust evolutionary multi-objective algorithm is applied to the design optimisation I
order to identify a set of good solutions in the presence of uncertainties both in the decision and objective
spaces.Mori Seiki – The Machine Tool Compan
Content analysis to detect high stress in oral interviews and text documents
A system of interrogation to estimate whether a subject of interrogation is likely experiencing high stress, emotional volatility and/or internal conflict in the subject's responses to an interviewer's questions. The system applies one or more of four procedures, a first statistical analysis, a second statistical analysis, a third analysis and a heat map analysis, to identify one or more documents containing the subject's responses for which further examination is recommended. Words in the documents are characterized in terms of dimensions representing different classes of emotions and states of mind, in which the subject's responses that manifest high stress, emotional volatility and/or internal conflict are identified. A heat map visually displays the dimensions manifested by the subject's responses in different colors, textures, geometric shapes or other visually distinguishable indicia
Quantitative genetic tools for brood stock improvement
Success in aquaculture and fisheries management depends on viable concept, sound management and animals with high genetic potential. In farm animals and plants application of genetic principles and genetiC tools lead to increased production in accordance with the demands of the nation. Breeding programmes like selective breeding and cross breeding played an important role in increased productivity, domestication and survival rate. Genetics
in fisheries is relatively ne
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White coat hypertension is associated with increased small vessel disease in the brain
Objective:
Small vessel disease, as measured by white matter hyperintensity (WMH) in the brain, is known to be associated with increased stroke risk and cognitive impairment. This study explored the relationship between WMH on computerised tomography (CT) and white coat hypertension/effect (WCH/E) in patients with recent transient ischaemic attack (TIA) or lacunar stroke (LS).
Design and method:
Ninety-six patients recruited for the ASIST trial (Arterial Stiffness in Lacunar Stroke and TIA) underwent measurement of clinic blood pressure (BP) and ambulatory BP monitoring (APBM) within two weeks of TIA or LS. Twenty-three patients had normotension (clinic BP / = 140/90mmHg and day-time ABPM < 135/85mmHg). Arterial stiffness was measured using carotid-femoral pulse wave velocity (PWV) (Complior®, ALAM Medical) and carotid-ankle vascular index (CAVI) (VaSera VS-1500N®, Fukuda Denshi). CT images were scored for WMH using the four-point Fazekas visual rating scale. Patients were grouped into no-mild WMH (scores 0–1) or moderate-severe (scores 2–3) groups. The relationship between BP, vascular stiffness and WMH was explored with t-tests, chi-square and logistic regression accounting for known cardiovascular risk factors.
Results:
Forty-four percent of patients with WCH/E had moderate-severe WMH compared to 17% of normotensives (p = 0.047). The regression model with WMH as the dependent factor, and WCH/E and cardiovascular risk factors as independent factors showed WCH/E and either CAVI or PWV to be the only independent significant factor contributing to WMH (CAVI:p = 0.038, PWV:p = 0.043)
P104 White coat hypertension is associated with increased small vessel disease in the brain
Objective: Small vessel disease, measured by brain white matter hyperintensity (WMH), is associated with increased stroke risk and cognitive impairment. This study aimed to explore the relationship between WMH on computerised tomography (CT) and white coat hypertension (WCH) in patients with recent transient ischaemic attack (TIA) or lacunar stroke (LS).
Methods: Ninety-six patients recruited for the ASIST trial (Arterial Stiffness in Lacunar Stroke and TIA) underwent measurement of clinic blood pressure (BP) and ambulatory BP monitoring (APBM) within two weeks of TIA or LS. Patients were grouped by BP phenotypes. Twenty-three patients had normotension (clinic BP 140/90 mmHg and day-time ABPM <135/85 mmHg). CT brain images were scored for WMH using the four-point Fazekas visual rating scale. Patients were grouped into no-mild WMH (scores 0–1) or moderate-severe (scores 2–3) groups. The relationship between BP and WMH was explored with chi-square and logistic regression accounting for known cardiovascular risk factors (age, gender, smoking, diabetes and hyperlipidaemia).
Results: 44% of WCH patients had moderate-severe WMH compared to 17% of normotensives (p = 0.047). Logistical regression incorporating WCH as the independent factor and cardiovascular risk factors as independent variables showed WCH to be the only independent significant factor contributing to WMH (p = 0.024).
Conclusion: Patients with WCH were more likely to have moderate-severe WMH on CT brain than normotensives. WCH was associated with increased WMH, independent of other cardiovascular risk factors. This study suggests that WCH is associated with increased small vessel disease in the brain and may benefit from treatment
Studies on Some Aspects of Diaeretiella Rapae (M, Intosh), A Parasitoid of Mustard Aphid, Lipaphis Erysimi Kalt
Two aspects in relation to host Lipaphis erysimi and parasitoid Diaeretiella rapae are studied. It in found that parasitization percentage depond on the host as well as the parasitoid density. Even single copulated female. Diaeretiella rapae in capable of parasiting 94 aphids within the three days. If number of host decrease super parasitism may also occur. Parasitization also effect the development rate of the parasitoid and it depends upon the stage of the host aphid. In I and II Instar nymphs of aphid development of Diaeretiella rapae is delayed and in other stages of aphid nymphs, normal development occurs
Pregnancy and perinatal outcomes in women with polycystic ovarian syndrome
Background: To study the pregnancy and perinatal outcomes in women with PCOS with normal women and to study the incidence of complications like menstrual irregularities, mode of conception, gestational diabetes mellitus, pre eclampsia, preterm labour and NICU admissions in women with PCOS.Methods: It was prospective comparatives study done in 100 women to compare outcome in pregnancy with PCOS and normal women. A detailed history, general and obstetric examination, antenatal investigations, routine dating scan, glucose challenge test at 24 to 28 weeks in study and control groups, blood pressure recording and urine for proteinuria after 20 weeks to evaluate preeclampsia. After delivery, birth weight and APGAR score at 1 and 5 minutes were recorded. Body mass index was calculated and pregnancy outcome studied and compared.Results: Out of 50 women with PCOS 13 developed GDM, 10 developed pre eclampsia, 6 had abortion, 4 went into preterm labour. 15 babies required NICU admission.Conclusions: Pregnancy complications like GDM, pre eclampsia, preterm labour, abortions and neonatal complications like NICU admissions are higher in women with PCOS when compared with normal women. Hence PCOS needs to be diagnosed early and treated accordingly to prevent pregnancy complications
Significance of Grasses in Establishment of Ecological Restoration in Mined out Degraded Land in Jharia Coalfield, Dhanbad
This paper reviews the experience of ecological restoration adopted by Bharat Coking Coal Limited (BCCL), a Miniratna Company, a subsidiary of Coal India Limited, Government of India, Public Sector Undertaking to restore the mined out degraded land in Jharia Coalfield (JCF). JCF is one of the oldest coalfield of India and was mined in an unscientific manner for more than 100 years by the erstwhile private entrepreneurs until it was nationalised in 1972-73, due to which the coalfield was subjected to severe land degradation, mine fires and subsidence. The total degraded land in the JCF in 1986 was 6,294 hectares. In the span of ~25 years (1986-2011), BCCL had taken up plantation/afforestation on 3676 ha of degraded lands through District Forest Office. Now, BCCL is trying to restore these mined out degraded land ecologically. The ecological restoration is to establish a three-tier vegetation comprising of native species grasses as lower tier, shrubs and bushes as middle tier and trees as upper tier with an objective to establish biodiversity and food chain; to improve the local climate regime and socio-economic condition. In 2011, BCCL in association with Forest Research Institute (FRI), Dehradun and Prof. CR Babu, Centre for Environmental Management of Degraded Ecosystem (CEMDE), Delhi University started ecological restoration of the mined out degraded land and overburden dumps. Two study sites were taken up in 2011-12; one at Damoda (23°47\u27N and 86°30\u27E) of 7 ha and another at Tetulmari (23°81\u27N and 86°33\u27E) of 8 ha, respectively. The mined dumps were composed of big and small boulders of shaly sandstone, sandstone, shale and with traces of soil. Earlier, these dumps were profusely invaded by exotic weeds like Parthenium hysterophorus, Croton bonplandianus, Xanthium strumarium and Eupatorium odoratum, Lantana camara. Due to more than 100 years of mining and severe land degradation, there is no soil cover on the dumps and was poor in nutrients.
Efforts were specially made in selection of species which are native to the region; generate the large quantity of biomass to enrich the soil; ability to stabilize the soil structure; utility to the local community. Therefore, species of trees, shrubs, herbs, grasses with multiple use value like fuel, fodder, fruit, medicine were used during the process of ecological restoration.
In our study, the importance was given to the establishment of grass cover as grasses generate larger quantity of biomass; stabilize the slopes and bind the stratum. The grass cover also plays a key role in establishment of the lower trophic levels of the ecosystem. The grass species introduced are Cenchrus ciliaris, Cenchrus setigerus, Pennisetum pedicellatum, Heteropogon, Stylosanthes,hamata, Chrysopogon, Bothriochloia, Thysanolaena latifolia, Dichanthium, Arundo, Eragrostis, Cynodon dactylon, Chloris, Digitaria, Saccharum spontaneum, and Panicum. In addition, Shrub species Dodonaea viscose, Vitex negundo, Dendrocalamus strictus, Dendrocalamus asper and Bambusa bambos, Woodfordia fruticosa, Calotropis procera, Cassia tora, Datura stramonium, Ziziphus mauritiana, Tephrosia purpurea, Adhatoda zeylanica and Agave sislana and the tree species Albizia procera, Dalbergia sisso, Phyllanthus embilica, Albizia lebbeck, Bahunia variegate, Aegle Marmelos, madhuca indica, Ficus religiosa, Ficus hispida, Syzygium cumini, Casia Fistula etc have been introduced
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