bluuebunny/crossref_metadata_2025_split huggingface dataset:
Measures describing curvilinear short fiber distributions
Authors: Hartmann Stefan , Liese Teresa 
Published: September 2020

AbstractIn this article, we discuss measures for fibers having a curvilinear shape. This is the case, for example, for man-made cellulose fibers having a weak stiffness. The fibers are bent during the injection molding process of short fiber reinforced plastics. For this purpose, $$\mu $$
μ
-CT data can be evaluated and several measures can be introduced defining the geometrical orientation of the fibers. These measures are the length, a mean curvature, and the mean torsion. Furthermore, a mean orientation of a fiber and a mean deviation to a straight line can be defined. Additionally, to these measures, which are based on a continuous interpolation of given data points, discretized quantities only considering the data points are compared. Finally, the distributions of these measures at real $$\mu $$
μ
-CT data are provided.
Cardiovascular mortality in a Swedish cohort of female industrial workers exposed to noise and shift work
Authors: Eriksson Helena P. , Söderberg Mia , Neitzel Richard L. , Torén Kjell , Andersson Eva 
Published: September 2020

Abstract
Purpose
The aim was to study mortality due to cardiovascular disease as well as total mortality, among female industrial workers, and the association to occupational noise and shift work.

Methods
Women from cohorts of soft tissue paper mills (N = 3013) and pulp and paper mills (N = 1483) were merged into one cohort. Job exposure matrices were developed and used for classification of shift work and noise exposure. Every year was classified as shift work excluding nights or shift work including nights. Noise was classified into seven 5 dB(A) bins from < 75 to ≥ 100 dB(A). Mortality from cardiovascular diseases and total mortality during 1956–2013 was calculated as a standardized mortality ratio (SMR) with 95% confidence interval (CI) using the female general population as a reference.

Results
Fatal myocardial infarctions (N = 144) were increased in the total cohort, SMR 1.20 (95% CI 1.01–1.41) but not total mortality. The SMR for myocardial infarction for women exposed to noise ≥ 90 dB(A) for > 10 years was 1.41 (95% CI 1.02–1.89) and for those exposed to night shifts > 10 years, 1.33 (95% CI 0.91–1.89). Shift workers without nights ≤ 65 years, with noise exposure ≥ 90 dB(A), had SMR 2.41 (95% CI 1.20–4.31) from myocardial infarction. There was no increased mortality from cerebrovascular disease.

Conclusions
Female paper mill workers had an increased mortality from acute myocardial infarction, especially before retirement age, when exposed to noise ≥ 90 dB(A) and with long-time employment. Exposure to shift work and noise usually occurred concurrently.
Application of electron beam water radiolysis for sewage sludge treatment—a review
Authors: Siwek Malgorzata , Edgecock Thomas 
Published: September 2020

AbstractA review of the applicability of electron beam water radiolysis for sewage sludge treatment is presented. Electron beam treatment has been proven to be a successful approach to the disinfection of both wastewater and sewage sludge. Nevertheless, before 2000, there were concerns about the perceived high capital costs of the accelerator and with public acceptance of the usage of radiation for water treatment purposes. Nowadays, with increased knowledge and technological development, it may be not only possible but also desirable to use electron beam technology for risk-free sewage sludge treatment, disposal and bio-friendly fertiliser production. Despite the developing interest in this method, there has been no attempt to perform a review of the pertinent literature relating to this technology. It appears that understanding of the mechanism and primary parameters of disinfection is key to optimising the process. This paper aims to reliably characterise the sewage sludge electron beam treatment process to elucidate its major issues and make recommendations for further development and research.
Cultivation of energy crops by ecological methods under the conditions of global climate and environmental changes with the use of diatom extract as a natural source of chemical compounds
Authors: Piotrowski K. , Romanowska-Duda Z. , Messyasz B. 
Published: September 2020

AbstractModern agriculture must be subject to some adaptation processes due to unpredictable climate changes. One of the activities that enables the production of plant biomass in adverse climatic conditions is the development of ecological and innovative crop technologies using natural plant extracts. The elimination of synthetic fertilizers and their replacement with products based on organic matter will increase the plant’s resistance to negative conditions of environmental stress, will have a positive effect on the development and yielding of plants and will reduce cultivation costs. The plant material: willow (Salix viminalis), Jerusalem artichoke (Helianthus tuberosus) and Virginia mallow (Sida hermaphrodita). The natural extract was obtained from Navicula sp. (Bacillariophyceae) monocultures, which was applied to plants in three variants: watering, spraying (foliar application) and watering and spraying. Every 2 weeks: plant height and chlorophyll content index were determined and at the end of the growing season, an analysis was made of: fresh and dry biomass, gas exchange activity in plants (net photosynthesis, transpiration, stomatal conductivity and intercellular CO2 concentration). The enzymatic activity of acid (pH = 6.0) and alkaline (pH = 7.5) phosphatase, RNase, dehydrogenases, as well as the integrity of cytoplasmic membranes was determined. The obtained results confirmed the positive effect of diatom monoculture extract on the growth and development of the plants. The analyzed physicochemical parameters were characterized by 15–20% higher values in comparison with the control. The use of natural extracts from Navicula sp. can be an alternative to chemical fertilizers and is considered one of the promising strategies in organic agriculture.
Evaluation of a low salinity water flooding with polymer gel treatment in Trinidad and Tobago
Authors: Ramkissoon Sanyah , Alexander David , Maharaj Rean , Soroush Mohammad 
Published: September 2020

AbstractTrinidad and Tobago (TT) has a rich history of crude oil production and is still one of the largest oil- and gas-producing countries in the Caribbean region. The energy sector contributes approximately 35% of GDP to its economy; however, economic headwinds due to steadily decreasing oil production, low commodity prices and increased competition worldwide have highlighted the need for more economical methods of enhanced oil recovery (EOR) techniques. Although the use of low salinity polymer flooding for EOR has had success in other countries, critical information relating associated flooding system parameters such as soil type, additive type, adsorption characteristics, rheological (flow) characteristics, pH and salinity is not available and is critical if this type of EOR is to be implemented in TT. The nature and inter-relationship of these parameters are unique to a particular reservoir, and studies in this regard will provide key input data for simulations to produce near realistic projections of this EOR strategy. These projections can be used to evaluate the usefulness of a low salinity polymer flooding in TT and guide for the proper implementation of the strategy. The EOR 33 wells located in the lower Forest sands in Southern Trinidad was selected for study as they satisfied the screening criteria. Laboratory studies of the adsorption of xanthan gum concentrations of 0 to 4000 ppm in combination with NaCl solutions (0–40,000 ppm) onto gravel packed sand found that the mixture of 1000 ppm polymer containing 1000 ppm NaCl exhibited the lowest adsorption capacity. The Langmuir coefficients were derived for each salinity, and together with results from the viscosity studies were inputted within the simulation models. Simulations of a sector of the EOR 33 projected that the highest oil recovery occurred using NaCl < 2000 ppm was 11% greater than water flood. A combination of brine (NaCl < 2000 ppm) with gel technology (1000 ppm polymer) produced the highest oil recovery factor (54%), almost twice that of water flooding, the highest average reservoir pressure and lowest water cut value. The improved performance characteristics observed using low salinity water flood with xanthan gum gel for injection can be associated with improved displacement efficiency and improved the sweep efficiency suggesting the strategy to be a technically feasible option for the EOR well in Trinidad.
Simple and fast prediction of train-induced track forces, ground and building vibrations
Authors: Auersch Lutz 
Published: September 2020

AbstractA simple and fast prediction scheme is presented for train-induced ground and building vibrations. Simple models such as (one-dimensional) transfer matrices are used for the vehicle–track–soil interaction and for the building–soil interaction. The wave propagation through layered soils is approximated by a frequency-dependent homogeneous half-space. The prediction is divided into the parts “emission” (excitation by railway traffic), “transmission” (wave propagation through the soil) and “immission” (transfer into a building). The link between the modules is made by the excitation force between emission and transmission, and by the free-field vibration between transmission and immission. All formula for the simple vehicle–track, soil and building models are given in this article. The behaviour of the models is demonstrated by typical examples, including the mitigation of train vibrations by elastic track elements, the low- and high-frequency cut-offs characteristic for layered soils, and the interacting soil, wall and floor resonances of multi-storey buildings. It is shown that the results of the simple prediction models can well represent the behaviour of the more time-consuming detailed models, the finite-element boundary-element models of the track, the wavenumber integrals for the soil and the three-dimensional finite-element models of the building. In addition, measurement examples are given for each part of the prediction, confirming that the methods provide reasonable results. As the prediction models are fast in calculation, many predictions can be done, for example to assess the environmental effect along a new railway line. The simple models have the additional advantage that the user needs to know only a minimum of parameters. So, the prediction is fast and user-friendly, but also theoretically and experimentally well-founded.
A tool to predict survival in stage IV entero-pancreatic NEN
Authors: Tarquini M. , Ambrosio M. R. , Albertelli M. , de Souza P. B. , Gafà R. , Gagliardi I. , Carnevale A. , Franceschetti P. , Zatelli M. C. 
Published: September 2020

Abstract
Purpose
Well-differentiated stage IV neuroendocrine neoplasms (NEN) have an extremely heterogeneous, unpredictable clinical behavior. Survival prognostic markers, such as the recently proposed NEP-Score, would be very useful for better defining therapeutic strategies. We aim to verify NEP-Score applicability in an independent cohort of stage IV well-differentiated (WD) gastroentero-pancreatic (GEP) NEN, and identify a derivate prognostic marker taking into account clinical and pathological characteristics at diagnosis.

Methods
Age, site of primary tumor, primary tumor surgery, symptoms, Ki67, timing of metastases of 27 patients (10 females; mean age at diagnosis 60.2 ± 2.9 years) with stage IV WD GEP NEN were evaluated to calculate the NEP-Score at the end of follow-up (NEP-T). We calculated the NEP-Score at diagnosis (NEP-D), which does not consider the appearance of new metastases during follow-up. Patients were subdivided according to whether they were alive or not at the end of follow-up (EOF) and an NEP-Score threshold was investigated to predict survival.

Results
Mean NEP-T and mean NEP-D were significantly lower in 15 live patients as compared to 12 deceased patients (p < 0.01) at EOF. We identified an NEP-D = 116 as the cutoff that significantly predicts survival. No gender differences were identified.

Conclusions
In our series, we confirmed NEP-Score applicability. In addition, we propose NEP-D as a simple, quick and cheap prognostic score that can help clinicians in decision making. NEP-D threshold can predict NEN aggressiveness and may be used to define the best personalized therapeutic strategy.
Factors associated with patient satisfaction in perioperative anesthesia care at Hawassa university comprehensive specialized hospital, Ethiopia. Cross-sectional study design
Authors: Siraneh Amanu Gashaw , Dendir Getahun , Paulos Kebreab 
Published: September 2020

ABSTRACT

Background:
Patient satisfaction with perioperative anesthesia care represents an essential aspect of quality health care management. The assessment of patient satisfaction is a reality of practice today for good patient satisfaction with health care provider interaction and health influencing factors.

Objectives:
To assess the magnitude and associated factor of patient satisfaction towards anesthesia care at Hawassa university comprehensive specialized hospital.

Method:
A prospective cross-sectional study design was employed in an adult surgical patient scheduled for surgery under general anesthesia, and the regional anesthesia level of satisfaction and factors associated with satisfaction were analyzed. Data were entered into EPI- info version 7 and transferred to SPSS version 25.0 for analysis. Normality tests checked using the Shapiro-Wilk and Kolmogorov-Smirnov data were normally distributed. The frequency, percentage, and cross-tabulation with different variables were determined, finally, the magnitude and associated factors were analyzed by binary logistic regression and multivariate logistic regression. Variables P-value < 0.2 binary logistic regression included in a multivariate logistic regression and p-value < 0.05 was taken as statistically significant.

Result:
A total of 200patient were included in this study with a response rate of 100%. The main findings of this study were predictors of perioperative patient dissatisfaction were general anesthesia, duration of surgery, nausea, and vomiting, and pain after surgery. The magnitude of patient satisfaction was 60%. The odds of the patient who took general anesthesia were 2.31 “(1.096, 4.142)” p = 0.026 more dissatisfied than regional anesthesia. The odds of the patient duration of surgery, 2–3hr 0.313 “(0.124, 0.792)” less likely dissatisfied than the duration of surgery 1hr.The odds of patient nausea and vomiting AOR = 2.575” (1.163, 5.698)” P = 002 more likely dissatisfied than did not have nausea and vomiting. The odds of patient pain after surgery AOR = 2.28” (1.084, 4.76)” more likely dissatisfied than the patient did not have pain after surgery.

Conclusion:
Patient satisfaction with perioperative anesthesia care compared to another study magnitude of satisfaction very low. Regular study and intervention should do every time to increase patient satisfaction.

Highlights:
AN EFFECTIVE BIAS-CORRECTED BAGGING METHOD FOR THE VALUATION OF LARGE VARIABLE ANNUITY PORTFOLIOS
Authors: Gweon Hyukjun , Li Shu , Mamon Rogemar 
Published: September 2020

AbstractTo evaluate a large portfolio of variable annuity (VA) contracts, many insurance companies rely on Monte Carlo simulation, which is computationally intensive. To address this computational challenge, machine learning techniques have been adopted in recent years to estimate the fair market values (FMVs) of a large number of contracts. It is shown that bootstrapped aggregation (bagging), one of the most popular machine learning algorithms, performs well in valuing VA contracts using related attributes. In this article, we highlight the presence of prediction bias of bagging and use the bias-corrected (BC) bagging approach to reduce the bias and thus improve the predictive performance. Experimental results demonstrate the effectiveness of BC bagging as compared with bagging, boosting, and model points in terms of prediction accuracy.
Evaluating the mental health impacts of the COVID-19 pandemic: perceived risk of COVID-19 infection and childhood trauma predict adult depressive symptoms in urban South Africa
Authors: Kim Andrew Wooyoung , Nyengerai Tawanda , Mendenhall Emily 
Published: September 2020

AbstractBackgroundSouth Africa's national lockdown introduced serious threats to public mental health in a society where one in three individuals develops a psychiatric disorder during their life. We aimed to evaluate the mental health impacts of the COVID-19 pandemic using a mixed-methods design.MethodsThis longitudinal study drew from a preexisting sample of 957 adults living in Soweto, a major township near Johannesburg. Psychological assessments were administered across two waves between August 2019 and March 2020 and during the first 6 weeks of the lockdown (late March–early May 2020). Interviews on COVID-19 experiences were administered in the second wave. Multiple regression models examined relationships between perceived COVID-19 risk and depression.ResultsFull data on perceived COVID-19 risk, depression, and covariates were available in 221 adults. In total, 14.5% of adults were at risk for depression. Higher perceived COVID-19 risk predicted greater depressive symptoms (p < 0.001), particularly among adults with histories of childhood trauma, though this effect was marginally significant (p = 0.063). Adults were about two times more likely to experience significant depressive symptoms for every one unit increase in perceived COVID-19 risk (p = 0.021; 95% CI 1.10–3.39). Qualitative data identified potent experiences of anxiety, financial insecurity, fear of infection, and rumination.ConclusionsHigher perceived risk of COVID-19 infection is associated with greater depressive symptoms during the first 6 weeks of quarantine. High rates of severe mental illness and low availability of mental healthcare amidst COVID-19 emphasize the need for immediate and accessible psychological resources.
British Visions, African Voices: The “Imperial” and the “Colonial” in World War II
Authors: Osborne Myles 
Published: September 2020

AbstractThis article is focused on a magazine calledJambo, which was published by the British East Africa Command for troops in its employ between 1942 and 1945.Jambowas an agglomeration of political articles, general interest stories, propaganda, cartoons, crosswords, and more, with many of its contributions authored (or drawn) by men serving in the Allied forces. Here, I useJamboto consider notions of the “colonial” and “imperial” during the Second World War, exploring how the realities of racial segregation in the colonies fit awkwardly with imperial service.Jamboalso permits us a window into the views of some hundreds of British servicemen, who wrote extensively about the Africans with whom they served, revealing the complexities and shifts in British perceptions of African peoples during the conflict.Jambois unique in another respect: it also provided a forum for African troops. In few other publications—and even fewer with such wide circulation—could educated (but nonelite) African peoples reach thousands of British readers. Though their published letters and articles were few compared to those written byJambo's British authors, African writers used the venue to critique the conditions of their military service, argue about the sort of social ordering they desired in their home communities, and create an alternate narrative of the war. Like most colonial publications,Jambohad intended audiences, but also voracious, additional, alternate publics that mediated the articles which appeared in its pages. All this suggests that we might think of the colonial public sphere as both local and global, inward and outward looking, personal and communal, and situated along a continuum between colonial and imperial contexts.
First antenatally confirmed case of arterial tortuosity syndrome
Authors: Saravu Vijayashankar Sakethram , Culham J. A. Gordon , Moodley Shreya 
Published: September 2020

AbstractArterial tortuosity syndrome (ATS) is a rare, autosomal recessive, connective tissue disorder. It predominantly involves the arterial tree with clinical features reflecting the systems involved. There have been few cases of ATS suspected during antenatal screening ultrasound in high-risk families, but none confirmed. We present the first case of ATS confirmed antenatally in the fetus with cascade testing, detecting the disease in the mother as well.
The Moderating Role of Parental Self-Efficacy on Parental Worry and Social Activity Limitation Associated With Pediatric Food Allergy
Authors: McLaughlin Alix M. , Humiston Tori , Peterson Catherine 
Published: September 2020

Objective: Research has established associations between parental self-efficacy (SE) related to managing their child’s food allergy (FA) and parent quality of life, but there has been limited examination of how parent variables predict child social outcomes. This study examined whether parental SE related to managing their child’s FA moderates the association between parental worry and activity limitation of the child. Methods: Parents of 218 children with parent-reported FA completed an online survey, which included measures of demographics, child FA characteristics, parental SE, parental worry, and social activity limitation. Participants were recruited locally and nationally through social media, e-mail listservs, and paper flyers in pediatricians’ and allergists’ offices in the region. Results: Linear regression results indicated that parental SE moderated the association between parental worry and limitation of child’s social activities, R 2 = .14, F(3, 213) = 8.35, p < .001. Parents with higher SE were less likely to limit their child’s social activities, regardless of worry level, whereas parents with lower SE were more likely to limit child social activities as their reported worry increased. Conclusions: Findings suggest that SE may act as a protective factor against child’s activity limitation and impairment of social quality of life when parents report high levels of worry, suggesting treatment targets for anxious parents of children with parent-reported FA. Implications for Impact Statement Higher parent self-efficacy for managing their child’s food allergy may allow for children to be more engaged in social activities, regardless of parent-reported worry. Enhancing parent self-efficacy should be considered as a target for improving family adjustment to childhood FA.