bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of enhanced weld cooling on the mechanical properties of a structural steel with a yield strength of 700 MPa
Authors: Laitila Juhani , Keränen Lassi , Larkiola Jari 
Published: October 2020

AbstractIn this study, we present the effect of enhanced cooling on the mechanical properties of a high-strength low-alloy steel (having a yield strength of 700 MPa) following a single-pass weld process. The properties evaluated in this study include uniform elongation, impact toughness, yield, tensile and fatigue strengths alongside the cooling time of the weld. With the steel used in this study, the enhanced cooling resulted in a weld joint characterized with excellent cross-weld uniform elongation, yield and fatigue strength. The intensified cooling reduced the time it takes for the weld to reach 100 °C by around 190 s. Not only the fusion line of the weld was less pronounced, but also the grain size of the CGHAZ was greatly refined as a result of the enhanced cooling. The results indicate that combining external cooling to the welding processes can be beneficial for the studied high-strength steel.
-spectra of measures on planar non-conformal attractors
Authors: FALCONER KENNETH J. , FRASER JONATHAN M. , LEE LAWRENCE D. 
Published: October 2020

AbstractWe study the

$L^{q}$
-spectrum of measures in the plane generated by certain nonlinear maps. In particular, we consider attractors of iterated function systems consisting of maps whose components are

$C^{1+\alpha }$
and for which the Jacobian is a lower triangular matrix at every point subject to a natural domination condition on the entries. We calculate the

$L^{q}$
-spectrum of Bernoulli measures supported on such sets by using an appropriately defined analogue of the singular value function and an appropriate pressure function.
Structures of an extradiol catechol dioxygenase – C23O64, from 3-nitrotoluene degrading Diaphorobacter sp. strain DS2 in substrate-free, substrate-bound and substrate analog-bound states
Authors: Mishra Keerti , Arya Chetan Kumar , Subramanian Ramaswamy , Ramanathan Gurunath 
Published: October 2020

AbstractThis manuscript reports structure–function studies of Catechol 2,3-dioxygenase (C23O64), which is the second enzyme in the metabolic degradation pathway of 3-nitrotoluene by Diaphorobacter sp. strain DS2. The recombinant protein is a ring cleavage enzyme for 3-methylcatechol and 4-methylcatechol products formed after dioxygenation of the aromatic ring. Here we report the substrate-free, substrate-bound, and substrate-analog bound crystal structures of C23O64. The protein crystallizes in the P6(2)22 space-group. The structures were determined by molecular replacement and refined to resolutions of 2.4, 2.4, 2.2 Å, respectively. A comparison of the structures with related extradiol dioxygenases showed 22 conserved residues. A comparison of the active site pocket with catechol 2,3-dioxygenase (LapB) from Pseudomonas sp KL28 and homoprotocatechuate 2,3-dioxygenase (HPCD) from Brevibacterium fuscum shows significant similarities to suggest that the mechanism of enzyme action is similar to HPCD.
The prevalence of mental health problems in sub-Saharan adolescents living with HIV: a systematic review
Authors: Dessauvagie A.S. , Jörns-Presentati A. , Napp A.-K. , Stein D.J. , Jonker D. , Breet E. , Charles W. , Swart R. L. , Lahti M. , Suliman S. , Jansen R. , van den Heuvel L.L. , Seedat S. , Groen G. 
Published: October 2020

Abstract
Despite the progress made in HIV treatment and prevention, HIV remains a major cause of adolescent morbidity and mortality in sub-Saharan Africa. As perinatally infected children increasingly survive into adulthood, the quality of life and mental health of this population has increased in importance. This review provides a synthesis of the prevalence of mental health problems in this population and explores associated factors. A systematic database search (Medline, PsycINFO, Scopus) with an additional hand search was conducted. Peer-reviewed studies on adolescents (aged 10–19), published between 2008 and 2019, assessing mental health symptoms or psychiatric disorders, either by standardized questionnaires or by diagnostic interviews, were included. The search identified 1461 articles, of which 301 were eligible for full-text analysis. Fourteen of these, concerning HIV-positive adolescents, met the inclusion criteria and were critically appraised. Mental health problems were highly prevalent among this group, with around 25% scoring positive for any psychiatric disorder and 30–50% showing emotional or behavioral difficulties or significant psychological distress. Associated factors found by regression analysis were older age, not being in school, impaired family functioning, HIV-related stigma and bullying, and poverty. Social support and parental competence were protective factors. Mental health problems among HIV-positive adolescents are highly prevalent and should be addressed as part of regular HIV care.
Inclusion at the Workplace: An Exploratory Study of People with Disabilities in South Africa
Authors: Bam Armand , Ronnie Linda 
Published: October 2020

AbstractResearch on the employment experiences of persons with disabilities on a global level indicates that this group is faced with the challenge of inclusion in the workplace. While South Africa has a well-defined legislative framework that has been determined in consultation with disabled people’s organisations, compliance with legislation appears to have failed to ensure that employment targets are met. As a response to these challenges, this study explored the early inclusion experiences of persons with disabilities in the workplace via a qualitative, explorative, case study. Semi-structured interviews were conducted with 12 people with a range of different disabilities and working for different organisations, in order to provide insight into the initial experiences of inclusion for persons with disabilities in the workplace. Findings showed challenges in induction and orientation practices, struggles with disclosure of disability to coworkers, a desire to strive for ‘normality’, and frustration and vulnerability in the workplace. Taken together, the findings point to the importance of early experiences of inclusion in the workplace – that is, inclusionary practices during the employee induction phase. This study offers insights to organisations and management practitioners for the promotion of better employment experiences. Recommendations include the appointment of a disability champion to account for disability equity within the organisation, the development of more inclusive recruitment and orientation practices, drawing on coworkers for support, and the active involvement of persons with disabilities in shaping onboarding processes. Embarking on these steps may ultimately result in a more diverse workforce within South Africa.
DECOMPOSING FUNCTIONS OF BAIRE CLASS ON POLISH SPACES
Authors: DING LONGYUN , KIHARA TAKAYUKI , SEMMES BRIAN , ZHAO JIAFEI 
Published: October 2020

AbstractWe prove the Decomposability Conjecture for functions of Baire class
$2$
from a Polish space to a separable metrizable space. This partially answers an important open problem in descriptive set theory.
Ethnography and Political Opinion: Identity, Alienation and Anti-establishmentarianism in Rural Alberta
Authors: Banack Clark 
Published: October 2020

AbstractThis article documents an ethnographic case study designed to provide deeper insight into the manifestation of political opinion in the rural areas of Alberta, Canada. Employing “a method of listening,” the study demonstrates that rural Albertans, like rural Americans, are feeling politically alienated and angry in ways that go beyond ideological preference, age or income level. In fact, the grievances unveiled in this study are connected directly to key aspects of their social identites: to thier sense of belonging as Albertans, as “ordinary citizens” and as explicitly rural. Importantly, these forms of alienation are often experienced as being layered, frequently melting into each other and strongly informing both these citizens’ strong support for anti-establishment politics and the rather negative fashion in which they interpret the plight of newcomers to Canada and of Indigenous Canadians.
Experts, Exiles, and Textiles: German “Rationalisierung” on the 1930s Turkish Shop Floor
Authors: Akgöz Görkem 
Published: October 2020

AbstractIn the wake of the Great Depression, in the early 1930s the Turkish state decided to undertake an ambitious project of industrialization. Though state factories were presented and celebrated as model institutions of national modernity, their operations were characterized from the outset by serious and chronic problems of inefficiency and low productivity. To secure technical and managerial know-how on the shop floor, the Turkish state approached knowledgeable German industrial managers to organize its industrial production rationally, hoping to take advantage of the increasingly repressive political climate in Germany, which was driving leading experts into exile. This article analyses the transfer of scientific management from the German industrial context, with its craft control of the labour process and predominance of skilled labour with a strong labour movement, to Turkey, with its army of unskilled, cheap, and unorganized labour and where industrial development was in its infancy.
Engagement with life among the oldest-old in assisted living facilities: enriching activities and developmental adaptation to physical loss
Authors: Boeder Jordan , Hwang Sarah , Chan Thomas 
Published: October 2020

AbstractThe objective of this study was to examine the activities, motivations, and barriers of activity engagement in the oldest-old residing in assisted living facilities (ALFs). Semi-structured interviews were conducted with 20 participants, aged 80–94 (standard deviation = 4.38), from two ALFs. Thematic analyses were used to identify and corroborate clusters of experiences. All residents stated that they desired enriching activities, most often in the form of productive work or community events. Although engaging in enriching activities was a universal desire, residents who experienced more functional limitations had an increased difficulty satisfying this need. Participants believed that activities offered by the ALF primarily served those who are cognitively impaired. ALF residents with severe mobility issues were not able to access more enriching activities outside the ALF compared to those with fewer physical limitations. However, the more physically impaired residents used a range of adaption methods that fit into the selection, optimisation, and compensation framework to overcome barriers to participate in meaningful activities. ALF residents who are cognitively fit but experience severe mobility limitations may be the most in need of enriching activities. To help these residents maintain a high quality of life, ALFs need to provide activities that appeal to residents of varying cognitive abilities and provide interventions to help aid their adaption to physical loss.
Association rules mining between service demands and remanufacturing services
Authors: Zhou Wenbin , Xia Xuhui , Zhang Zelin , Wang Lei 
Published: October 2020

AbstractThe potential relationship between service demands and remanufacturing services (RMS) is essential to make the decision of a RMS plan accurately and improve the efficiency and benefit. In the traditional association rule mining methods, a large number of candidate sets affect the mining efficiency, and the results are not easy for customers to understand. Therefore, a mining method based on binary particle swarm optimization ant colony algorithm to discover service demands and remanufacture services association rules is proposed. This method preprocesses the RMS records, converts them into a binary matrix, and uses the improved ant colony algorithm to mine the maximum frequent itemset. Because the particle swarm algorithm determines the initial pheromone concentration of the ant colony, it avoids the blindness of the ant colony, effectively enhances the searchability of the algorithm, and makes association rule mining faster and more accurate. Finally, a set of historical RMS record data of straightening machine is used to test the validity and feasibility of this method by extracting valid association rules to guide the design of RMS scheme for straightening machine parts.
Standardisation of management after Norwood operation has not improved 1-year outcomes
Authors: Pisesky Andrea , Shah Shilpa , Seed Michael , Schwartz Steven M. , Russell Jennifer , Pereira-Solomos Paula , Thomas Jennifer , Van Arsdell Glen , Floh Alejandro 
Published: October 2020

AbstractIntroduction:Treatment of hypoplastic left heart syndrome varies across institutions. This study examined the impact of introducing a standardised programme.Methods:This retrospective cohort study evaluated the effects of a comprehensive strategy on 1-year transplant-free survival with preserved ventricular and atrioventricular valve (AVV) function following a Norwood operation. This strategy included standardised operative and perioperative management and dedicated interstage monitoring. The post-implementation cohort (C2) was compared to historic controls (C1). Outcomes were assessed using logistic regression and Kaplan–Meier analysis.Results:The study included 105 patients, 76 in C1 and 29 in C2. Groups had similar baseline characteristics, including percentage with preserved ventricular (96% C1 versus 100% C2, p = 0.28) and AVV function (97% C1 versus 93% C2, p = 0.31). Perioperatively, C2 had higher indexed oxygen delivery (348 ± 67 ml/minute/m2 C1 versus 402 ± 102ml/minute/m2 C2, p = 0.015) and lower renal injury (47% C1 versus 3% C2, p = 0.004). The primary outcome was similar in both groups (49% C1 and 52% C2, p = 0.78), with comparable rates of death and transplantation (36% C1 versus 38% C2, p = 0.89) and ventricular (2% C1 versus 0% C2, p = 0.53) and AVV dysfunction (11% C1 versus 11% C2, p = 0.96) at 1-year. When accounting for cohort and 100-day freedom from hospitalisation, female gender (OR 3.7, p = 0.01) increased and ventricular dysfunction (OR 0.21, p = 0.02) and CPR (OR 0.11, p = 0.002) or ECMO use (OR 0.15, p = 001) decreased the likelihood of 1-year transplant-free survival.Conclusions:Standardised perioperative management was not associated with improved 1-year transplant-free survival. Post-operative ventricular or AVV dysfunction was the strongest predictor of 1-year mortality.
Seed-shattering phenology at soybean harvest of economically important weeds in multiple regions of the United States. Part 2: Grass species
Authors: Schwartz-Lazaro Lauren M. , Shergill Lovreet S. , Evans Jeffrey A. , Bagavathiannan Muthukumar V. , Beam Shawn C. , Bish Mandy D. , Bond Jason A. , Bradley Kevin W. , Curran William S. , Davis Adam S. , Everman Wesley J. , Flessner Michael L. , Haring Steven C. , Jordan Nicholas R. , Korres Nicholas E. , Lindquist John L. , Norsworthy Jason K. , Sanders Tameka L. , Steckel Larry E. , VanGessel Mark J. , Young Blake , Mirsky Steven B. 
Published: October 2020

AbstractSeed shatter is an important weediness trait on which the efficacy of harvest weed seed control (HWSC) depends. The level of seed shatter in a species is likely influenced by agroecological and environmental factors. In 2016 and 2017, we assessed seed shatter of eight economically important grass weed species in soybean [Glycine max (L.) Merr.] from crop physiological maturity to 4 wk after maturity at multiple sites spread across 11 states in the southern, northern, and mid-Atlantic United States. From soybean maturity to 4 wk after maturity, cumulative percent seed shatter was lowest in the southern U.S. regions and increased moving north through the states. At soybean maturity, the percent of seed shatter ranged from 1% to 70%. That range had shifted to 5% to 100% (mean: 42%) by 25 d after soybean maturity. There were considerable differences in seed-shatter onset and rate of progression between sites and years in some species that could impact their susceptibility to HWSC. Our results suggest that many summer annual grass species are likely not ideal candidates for HWSC, although HWSC could substantially reduce their seed output during certain years.
Role of vitamin B12 in treating recurrent aphthous stomatitis: A review
Authors: Taleb Rim , Hafez Bassel , El Kassir Nadim , El Achkar Hani , Mourad Mohamad 
Published: October 2020

Abstract. Vitamin B12, a water-soluble vitamin, plays a vital role in the formation of hematopoietic stem cells and has been associated with oral mucosal diseases, mainly recurrent aphthous stomatitis (RAS). The latter is a debilitating condition, and B12 was proposed as a potential treatment given its role in regenerating oral mucosal tissue. There is conflicting evidence that B12 deficiency causes RAS. Five of the seven randomized controlled trials reviewed used the inactive form of B12 (cyanocobalamin) as intervention, while the other two used the active form (methylcobalamin). Of the latter two, buccal discs (500 μg B12) showed significant improvement and reduced perceived pain in 77% of the subjects, and submucosal injections showed a significant difference in pain, starting from the second day. Moreover, three studies administered vitamin B12 sublingually with different dosages, which revealed that the higher dose (1000 μg) achieved a significant reduction in outbreaks, number, and duration of ulcers, especially after six months. Multivitamins showed no difference in new RAS episodes and duration. Injectable B12 was compared with the oral form, and nearly 50% of the injection group reported a desired response by the eighth week. An ointment form (500 μg) showed a significant reduction in pain levels after two days of treatment. Based on the available literature, we suggest that a daily dose of 1000 μg of vitamin B12 sublingually for six months can be used to treat RAS. Nevertheless, this conclusion should be considered tentative due to the lack of high quality, large scale studies.
Reply to Comment by E. T. Swenson, D. Das, and J. Shukla on “Unraveling the Mystery of Indian Summer Monsoon Prediction: Improved Estimate of Predictability Limit”
Authors: Saha Subodh Kumar , Hazra Anupam , Pokhrel Samir , Chaudhari Hemantkumar S. , Rai Archana , Sujith K. , Rahaman Hasibur , Goswami B. N. 
Published: October 2020

AbstractSwenson et al. (2020, https://doi.org/10.1029/2020JD033037) (hereafter SN20) raise some technical issues on observed correlations between the synoptic variances and the seasonal mean of area averaged (all‐India or central India) Indian summer monsoon rainfall (ISMR) reported in Saha et al. (2019, https://doi.org/10.1029/2018JD030082) (hereafter SA19). SN20 did not comment on the other major finding of SA19 on model‐based prediction and predictability of the ISMR. Therefore, we focus in this reply only on the observational part of SA19 even though the modeling part is closely related to the observations. While we disagree with SN20 in all three aspects of their comments, we present additional analysis to clarify the scientific basis for our selection of area averaging, the selection of 30‐year period for the study and argue that the relevant probability density function of daily rainfall is not that of the individual stations (or grid points) but that of the daily averaged rainfall over a comparable area. On the debate of small area averaging (major point of SN20), we argue that it is physically meaningless in the context of ISMR.
Fully Implicit Dynamic Pore‐Network Modeling of Two‐Phase Flow and Phase Change in Porous Media
Authors: Chen Sidian , Qin Chaozhong , Guo Bo 
Published: October 2020

AbstractDynamic pore‐network model (PNM) has been widely used to model pore‐scale two‐phase flow. Numerical algorithms commonly used for dynamic PNM including IMPES (implicit pressure explicit saturation) and IMP‐SIMS (implicit pressure semi‐implicit saturation) can be numerically unstable or inaccurate for challenging flow regimes such as low capillary number (Ca) flow and unfavorable displacements. We perform comprehensive analyses of IMPES and IMP‐SIMS for a wide range of flow regimes under drainage conditions and develop a novel fully implicit (FI) algorithm to address their limitations. Our simulations show the following: (1) While IMPES was reported to be numerically unstable for low Ca flow, using a smoothed local pore‐body capillary pressure curve appears to produce stable simulations. (2) Due to an approximation for the capillary driving force, IMP‐SIMS can deviate from quasi‐static solutions at equilibrium states especially in heterogeneous networks. (3) Both IMPES and IMP‐SIMS introduce mass conservation errors. The errors are small for networks with cubic pore bodies (less than 1.4% for IMPES and 1.2% for IMP‐SIMS). They become much greater for networks with square‐tube pore bodies (up to 45% for IMPES and 46% for IMP‐SIMS). Conversely, the new FI algorithm is numerically stable and mass conservative regardless of the flow regimes and pore geometries. It also precisely recovers the quasi‐static solutions at equilibrium states. The FI framework has been extended to include compressible two‐phase flow, multicomponent transport, and phase change dynamics. Example simulations of two‐phase displacements accounting for phase change show that evaporation and condensation can suppress fingering patterns generated during invasion.
Slug regulates the Dll4-Notch-VEGFR2 axis to control endothelial cell activation and angiogenesis
Authors: Hultgren Nan W. , Fang Jennifer S. , Ziegler Mary E. , Ramirez Ricardo N. , Phan Duc T. T. , Hatch Michaela M. S. , Welch-Reardon Katrina M. , Paniagua Antonio E. , Kim Lin S. , Shon Nathan N. , Williams David S. , Mortazavi Ali , Hughes Christopher C. W. 
Published: October 2020

AbstractSlug (SNAI2), a member of the well-conserved Snail family of transcription factors, has multiple developmental roles, including in epithelial-to-mesenchymal transition (EMT). Here, we show that Slug is critical for the pathological angiogenesis needed to sustain tumor growth, and transiently necessary for normal developmental angiogenesis. We find that Slug upregulation in angiogenic endothelial cells (EC) regulates an EMT-like suite of target genes, and suppresses Dll4-Notch signaling thereby promoting VEGFR2 expression. Both EC-specific Slug re-expression and reduced Notch signaling, either by γ-secretase inhibition or loss of Dll4, rescue retinal angiogenesis in SlugKO mice. Conversely, inhibition of VEGF signaling prevents excessive angiogenic sprouting of Slug overexpressing EC. Finally, endothelial Slug (but not Snail) is activated by the pro-angiogenic factor SDF1α via its canonical receptor CXCR4 and the MAP kinase ERK5. Altogether, our data support a critical role for Slug in determining the angiogenic response during development and disease.