bluuebunny/crossref_metadata_2025 huggingface dataset:
REQUIEM-2D Methodology: Spatially Resolved Stellar Populations of Massive Lensed Quiescent Galaxies from Hubble Space Telescope 2D Grism Spectroscopy
Authors: Akhshik Mohammad , Whitaker Katherine E. , Brammer Gabriel , Mahler Guillaume , Sharon Keren , Leja Joel , Bayliss Matthew B. , Bezanson Rachel , Gladders Michael D. , Man Allison , Nelson Erica J. , Rigby Jane R. , Rizzo Francesca , Toft Sune , Wellons Sarah , Williams Christina C.
Published: September 2020

We present a novel Bayesian methodology to jointly model photometry and deep Hubble Space Telescope 2D grism spectroscopy of high-redshift galaxies. Our requiem2d code measures both unresolved and resolved stellar populations, ages, and star formation histories (SFHs) for the ongoing REsolving QUIEscent Magnified (REQUIEM) Galaxies Survey, which targets strong gravitationally lensed quiescent galaxies at z ∼ 2. We test the accuracy of requiem2d using a simulated sample of massive galaxies at z ∼ 2 from the Illustris cosmological simulation and find that we recover the general trends in SFH and median stellar ages. We further present a pilot study for the REQUIEM Galaxies Survey: MRG-S0851, a quintuply imaged, massive (

) red galaxy at z = 1.883 ± 0.001. With an estimated gravitational magnification of

, we sample the stellar populations on 0.6 kpc physical size bins. The global mass-weighted median age is constrained to be

Gyr, and our spatially resolved analysis reveals that MRG-S0851 has a flat age gradient in the inner 3 kpc core after taking into account the subtle effects of dust and metallicity on age measurements, favoring an early formation scenario. The analysis for the full REQUIEM-2D sample will be presented in a forthcoming paper with a beta release of the requiem2d code.
Geometry of the Draco C1 Symbiotic Binary
Authors: Lewis Hannah M. , Anguiano Borja , Stassun Keivan G. , Majewski Steven R. , Arras Phil , Sarazin Craig L. , Li Zhi-Yun , De Lee Nathan , Troup Nicholas W. , Prieto Carlos Allende , Badenes Carles , Cunha Katia , García-Hernández D. A. , Nidever David L. , Palicio Pedro A. , Simon Joshua D. , Smith Verne V.
Published: September 2020

Draco C1 is a known symbiotic binary star system composed of a carbon red giant and a hot, compact companion—likely a white dwarf—belonging to the Draco dwarf spheroidal galaxy. From near-infrared spectroscopic observations taken by the Apache Point Observatory Galactic Evolution Experiment (APOGEE-2), part of Sloan Digital Sky Survey IV, we provide updated stellar parameters for the cool, giant component, and constrain the temperature and mass of the hot, compact companion. Prior measurements of the periodicity of the system, based on only a few epochs of radial velocity data or relatively short baseline photometric observations, were sufficient only to place lower limits on the orbital period (P > 300 days). For the first time, we report precise orbital parameters for the binary system: with 43 radial velocity measurements from APOGEE spanning an observational baseline of more than 3 yr, we definitively derive the period of the system to be

days. Based on the newly derived orbital period and separation of the system, together with estimates of the radius of the red giant star, we find that the hot companion must be accreting matter from the dense wind of its evolved companion.
Pulsar Timing Array Constraints on the Merger Timescale of Subparsec Supermassive Black Hole Binary Candidates
Authors: Nguyen Khai , Bogdanović Tamara , Runnoe Jessie C. , Taylor Stephen R. , Sesana Alberto , Eracleous Michael , Sigurdsson Steinn
Published: September 2020

We estimate the merger timescale of spectroscopically selected, subparsec supermassive black hole binary (SMBHB) candidates by comparing their expected contribution to the gravitational-wave background (GWB) with the sensitivity of current pulsar timing array (PTA) experiments and in particular, with the latest upper limit placed by the North American Nanohertz Observatory for Gravitational Waves. We find that the average timescale to coalescence of such SMBHBs is

yr, assuming that their orbital evolution in the PTA frequency band is driven by emission of gravitational waves. If some fraction of SMBHBs do not reside in spectroscopically detected active galaxies, and their incidence in active and inactive galaxies is similar, then the merger timescale could be ∼10 times longer,

yr. These limits are consistent with the range of timescales predicted by theoretical models and imply that all the SMBHB candidates in our spectroscopic sample could be binaries without violating the observational constraints on the GWB. This result illustrates the power of the multimessenger approach, facilitated by the PTAs, in providing an independent statistical test of the nature of SMBHB candidates discovered in electromagnetic searches.
Neutronic modeling of a subcritical system with corium particles and water (from international benchmark)
Authors: Smirnov Anton D. , Bogdanova Ekaterina V. , Pugachev Pavel A. , Saldikov Ivan S. , Ternovykh Mikhail Yu. , Tikhomirov Georgy V. , Takezawa Hiroki , Muramoto Takeshi , Nishiyama Jun , Obara Toru
Published: September 2020

After the accident at the Fukushima Daiichi NPP, the attention of the scientific community is riveted on how the consequences are being eliminated. Removing corium – a lava-like resolidified mixture of nuclear fuel with other structural elements of the reactor – remains the most difficult task, the solution of which can take several decades. It is extremely important to exclude the occurrence of any emergency processes during the removal of corium. The purpose of this work was to solve a coordinated hydrodynamic and neutronic problem characterized by a large number of randomly oriented and irregularly located corium particles in water as part of the development of a benchmark for this class of problems. Monte Carlo-based precision codes were used to perform a neutronic analysis. The positions of corium particles were determined from the numerical simulation results. The analysis results obtained using the codes involved showed good agreement for all the states considered. It was shown that the modern neutronic codes based on the Monte Carlo method successfully cope with the geometric formation and solution of the problem with a nontrivial distribution of corium particles in water. The results of the study can be used to justify the safety of corium handling procedures, including its extraction from a damaged power unit.
Rediscovery of Angiopteris tonkinensis (Marattiaceae) after 100 years, and its revision
Authors: Wang Ting , Xiao Bo , Liu En-De , Nguyen Khang Sinh , Duan Jie-Qiu , Wang Kang-Lin , Yan Yue-Hong , Xiang Jian-Ying
Published: September 2020

The border area between south-eastern Yunnan, China and northern Vietnam is one of the regions with richest biological diversity including that of the fern genus Angiopteris (Marattiaceae). Based on the analysis of morphology and DNA sequences of multiple chloroplast regions (atpB, rbcL, rps4-trnS spacer and trnL-F spacer), we revised Angiopteris tonkinensis (Hayata) J.M.Camus and proposed a new combination Angiopteris tamdaoensis (Hayata) J.Y.Xiang & T.Wang, comb. nov., which was previously regarded as a synonym of A. tonkinensis. We found support for a monophyletic Angiopteris including Protomarattia. This discovery adds two new distribution sites of A. tonkinensis, one in China (Malipo, Yunnan) and one in Vietnam (Quan Ba, Ha Giang). We suggest A. tonkinensis should be categorised as Critically Endangered (CR) species according to the criteria of IUCN.
A beta bailout: the near future of state intervention
Authors: Berry Craig , Bailey Daniel , Jones Katy
Published: September 2020

This article asks what kind of state intervention is needed for a post-Covid recovery. The government bailout will seek to sustain a modified form of neoliberalism, but what is needed is a bailout for society from the wreckage of the neoliberal paradigm. The outlines of a strategy for
the UK economy are presented: at its heart is a radical industrial policy that prioritises social infrastructure, a green transition and providing quality employment opportunities, while paying particular attention to the functioning of the foundational economy. An active labour market policy
(ALMP) is also needed, which turns away from a focus on conditionality for those on benefits, and instead focuses support on industries less affected by the pandemic and its implications for demand, including through securing a workforce that is ready to populate them. Conditionality should,
on the other hand, be imposed on firms receiving government support. Bailout 2.0 must also involve intervention designed to create new public assets, managed via new forms of democratic ownership.
The new moving right show
Authors: Knott Andy
Published: September 2020

The current political conjuncture in the UK invites a revisiting of Stuart Hall's influential analysis of Thatcherism and, in particular, his characterisation of authoritarian populism. With the Conservatives' recent and ongoing shift towards right-wing populism under Boris Johnson
and Dominic Cummings, we have a useful comparator with the turn to Thatcherism; and this shift also provides the opportunity to engage in a longer-range analysis of the relationship between conservatism, authoritarian/right-wing populism and neoliberalism. Hall's association of Thatcherism
with authoritarian populism occurred during a fallow period in analyses of populism - in stark contrast to the contemporary populist 'moment', 'eruption' or 'explosion'. Thatcher's populist credentials are interrogated: some elements of current definitions of populism, including the people
versus elite antagonism, were sidelined in her political language; and an emphasis on individualism infused her wider discourse. Nevertheless, the concept of authoritarian populism, and Hall's wider analysis, still offers an interesting perspective for a contemporary period of challenge to
dominant discourse - even though the contestation is within the right.
Conversations with Stuart Hall: unravelling and resistance
Authors: Shenker Jack
Published: September 2020

This article explores what it's like to live through the unravelling of a political settlement, and reflects on its complicated relationship to resistance. To do so, it discusses two young people who live thousands of miles apart and looks at some of the threads which bind them together.
Kamal lives in Cairo, and was an activist in the Egyptian revolution. Kyle, from Greater Manchester, has a suffered from a lack of social care support - directly related to austerity - that caused him to become homeless as a teenager. Each life has been irrevocably marked by the impossibility
of sustaining the settlement that existed before the financial crisis. Each young man lives under a government that has no intention of addressing their needs. Each continues, despite everything, to believe in politics. The new landscape of political struggle contains both emancipatory and
deeply revanchist possibilities. Understanding its contours will help us to find within it the people, communities and the stories that give cause for optimism.
Prediction of Work Impact in Axial Spondyloarthritis by the Work Instability Scale: A Prospective Cohort Study of 101 Patients
Authors: Cucos Irina , Dadoun Sabrina , Jacquemin Charlotte , Kreis Sarah , Fabre Stephanie , Hudry Christophe , Pertuiset Eduard , Fautrel Bruno , Gossec Laure
Published: September 2020

Objective.

Axial spondyloarthritis (axSpA) may have an effect on work. The Ankylosing Spondylitis Work Instability Scale (AS-WIS) assesses difficulties at work. The objective of this study was to evaluate the predictive value of the AS-WIS on work impact.

Methods.

This is a prospective cohort study with 2 timepoints (at baseline and after 1.5 yrs) that included patients with axSpA who had paid employment. Patients completed the AS-WIS at baseline and work instability was scored as moderate/high if ≥ 11 (0–20 scale). At follow-up, adverse work outcomes (AWO) were grouped as moderate (short-term sick leave) or severe AWO (long-term sick leave, disability, unemployment). Univariable and multivariable logistic regression analyses were performed to explain AWO.

Results.

Of 101 patients, mean age 45 (SD 9) years, 52% male, disease duration was 14 (SD 8) years. The Bath AS Disease Activity Index and the Bath AS Functional Index were 34 (SD 21) and 23 (SD 23), respectively, and 69 (68%) received a tumor necrosis factor inhibitor. At baseline, 46 (46%) patients had moderate/high AS-WIS. At 1.5 years of follow-up, 37 patients (36%) had AWO: 25 patients (25%) a short-term sick leave, and 12 patients (12%, 7/100 patient-years) a severe AWO. Independent baseline factors associated with AWO were a moderate/high AS-WIS score (OR 2.71, 95% CI 1.04–7.22) and shorter disease duration (OR 0.94, 95% CI 0.89–0.99).

Conclusion.

In patients with axSpA, a moderate/high AS-WIS score was predictive of AWO in this population with well-controlled axSpA. This short questionnaire can be helpful to screen for future difficulties at work.
Evaluating Quality of Care for Rheumatoid Arthritis for the Population of Alberta Using System-level Performance Measures
Authors: Barber Claire E.H. , Lacaille Diane , Faris Peter , Mosher Dianne , Katz Steven , Patel Jatin N. , Zhang Sharon , Yee Karen , Barnabe Cheryl , Hazlewood Glen S. , Bykerk Vivian , Shiff Natalie J. , Twilt Marinka , Burt Jennifer , Benseler Susanne M. , Homik Joanne , Marshall Deborah A.
Published: September 2020

Objective

We evaluated 4 national rheumatoid arthritis (RA) system-level performance measures (PM) in Alberta, Canada.

Methods

Incident and prevalent RA cases ≥ 16 years of age since 2002 were identified using a validated case definition applied in provincial administrative data. Performance was ascertained through analysis of health data between fiscal years 2012/13–2015/16. Measures evaluated were as follows: proportion of incident RA cases with a rheumatologist visit within 1 year of first RA diagnosis code (PM1); proportion of prevalent RA patients who were dispensed a disease-modifying antirheumatic drug (DMARD) annually (PM2); time from first visit with an RA code to DMARD dispensation and proportion of incident cases where the 14-day benchmark for dispensation was met (PM3); and proportion of patients seen in annual follow-up (PM4).

Results

There were 31,566 prevalent and 2730 incident RA cases (2012/13). Over the analysis period, the proportion of patients seen by a rheumatologist within 1 year of onset (PM1) increased from 55% to 63%; however, the proportion of RA patients dispensed DMARD annually (PM2) remained low at 43%. While the median time to DMARD from first visit date in people who received DMARD improved over time from 39 days to 28 days, only 38–41% of patients received treatment within the 14-day benchmark (PM3). The percentage of patients seen in yearly follow-up (PM4) varied between 73–80%.

Conclusion

The existing Alberta healthcare system for RA is suboptimal, indicating barriers to accessing specialty care and treatment. Our results inform quality improvement initiatives required within the province to meet national standards of care.
National Sjögren’s Foundation Survey: Burden of Oral and Systemic Involvement on Quality of Life
Authors: McCoy Sara S. , Bartels Christie M. , Saldanha Ian J. , Bunya Vatinee Y. , Akpek Esen K. , Makara Matthew A. , Baer Alan N.
Published: September 2020

Objective.

To define the association between oral and systemic manifestations of Sjögren syndrome (SS) and quality of life (QOL).

Methods.

We analyzed a cross-sectional survey conducted by the Sjögren’s Foundation in 2016, with 2961 eligible responses. We defined oral symptom and sign exposures as parotid gland swelling, dry mouth, mouth ulcers/sores, oral candidiasis, trouble speaking, choking or dysphagia, sialolithiasis or gland infection, and dental caries. Systemic exposures included interstitial lung disease, purpura/petechiae/cryoglobulinemia, vasculitis, neuropathy, leukopenia, interstitial nephritis, renal tubular acidosis, autoimmune hepatitis, primary biliary cholangitis, or lymphoma. Outcomes included SS-specific QOL questions generated by SS experts and patients.

Results.

Using multivariable regression models adjusted for age, sex, race, and employment, we observed that mouth ulcers or sores, trouble speaking, and dysphagia were associated with poor quality of life. The following oral aspects had the greatest effect on the following QOL areas: (1) mouth ulcers/sores on the challenge and burden of living with SS (OR 4.26, 95% CI 2.89–6.28); (2) trouble speaking on memory and concentration (OR 4.24, 95% CI 3.28–5.48); and (3) dysphagia on functional interference (OR 4.25, 95% CI 3.13–5.79). In contrast, systemic manifestations were associated with QOL to a lesser extent or not at all.

Conclusion.

Oral manifestations of SS, particularly mouth ulcers or sores, trouble speaking, and dysphagia, were strongly associated with worse QOL. Further study and targeted treatment of these oral manifestations provides the opportunity to improve quality of life in patients with SS.
Unraveling energy consumption by using low-cost and reevaluated thermoelectricThin Films
Authors: DURAK YÜZÜAK Gizem , ÖZKAN Seray , YÜZÜAK Ercüment
Published: September 2020

Energy is undoubtedly one of our most important demands whose consumption is constantly increasingand will continue to increase soon. One of the most important factors in attaining the required energy is to providehigh efficiency at a low cost with the help of new technological improvements by evaluating wastes. Energy demandcould be achieved for a relatively large thermoelectric power value by recycling the Peltier modules from waste onesand adjusting their properties with nanotechnology. For this aim, thermoelectric thin film modules were grown onsilicon (Si), glass, and Kapton substrates with thermal evaporation method by using two different BiTeSb/BiTeSealloy materials which are placed in industrial Peltiers as the p- and n-type semiconductor. The thin films structuraland morphological characterizations were investigated by X-ray diffraction (XRD) and scanning electron microscopy(SEM) experiments reveal fine surface with uniformly distributed continuous structure. Seebeck coefficiency (|S|) of thesubstantial modules were investigated by forming certain temperature gradients on them making serial connections usinga homemade measurement setup. |S|=143.86μV/K is obtained for the thermoelectric module on Si substrate and 44.96μV/K and 24.98μV/K are calculated for glass and Kapton, respectively.
Melatonin attenuates ovarian ischemia reperfusion injury in rats by decreasing oxidative stress index and peroxynitrite
Authors: KALYONCU Şenol , YILMAZ Bülent , DEMİR Mustafa , TUNCER Meltem , BOZDAĞ Zehra , İNCE Onur , BOZDAYI Mehmet Akif , ULUSAL Hasan , TAYSİ Seyithan
Published: September 2020

Background/aim: To evaluate the protective effect of melatonin on ovarian ischemia reperfusion injury in a rat model. Materials and methods: Forty-eight rats were separated equally into 6 groups. Group 1: sham; Group 2: surgical control with 3-h bilateral ovarian torsion and detorsion; Group 3: intraperitoneal 5% ethanol (1 mL) just after detorsion (as melatonin was dissolved in ethanol); Group 4: 10 mg/kg intraperitoneal melatonin 30 min before 3-h torsion; Group 5:10 mg/kg intraperitoneal melatonin just after detorsion; Group 6:10 mg/kg intraperitoneal melatonin 30 min before torsion and just after detorsion. Both ovaries and blood samples were obtained 7 days after detorsion for histopathological and biochemical analysis.Results: In Group 1, serum levels of total oxidant status (TOS) (μmol H2O2 equivalent/g wet tissue)were significantly lower than in Group2 (P = 0.0023), while tissue TOS levels were lower than in Group 3 (P = 0.0030). Similarly, serum and tissue levels of peroxynitrite in Group 6were significantly lower than those ofGroup 2 (P = 0.0023 and P = 0.040, respectively). Moreover, serum oxidative stress index (OSI) (arbitrary unit) levels were significantly increased in Group 2 when compared to groups 1 and 6 (P = 0.0023 and P= 0.0016, respectively) and in Group 3 with respect to groups 1, 4, 5, and 6 (P = 0.0023, P = 0.0026, P = 0.0008, and P = 0.0011, respectively). Furthermore, there was a significant decrease in histopathological scores including follicular degeneration, vascular congestion, hemorrhage, and inflammation in the melatonin and sham groups in comparison with control groups. Additionally, primordial follicle count was significantly higher in Group 6 than in Group 2 (P = 0.0002).Conclusion: Melatonin attenuates ischemia reperfusion damage in a rat torsion/detorsion model by improving histopathological and biochemical findings including OSI and peroxynitrite.
« On n’est pas des magiciens » : Le contrôleur, facilitateur de compromis dans le processus de commensuration
Authors: Jerman Lambert , Alcouffe Simon , Oriot Fabienne
Published: September 2020

Dans cet article, nous définissons le contrôleur de gestion comme un « facilitateur de compromis » pour comprendre son influence dans le processus de commensuration des organisations et de leurs activités. Le « facilitateur de compromis » décrit les pratiques et les discours par lesquels le contrôleur bricole et adapte les indicateurs et nombres, pour les doter de l’élasticité et de la polysémie nécessaires à ce qu’ils soient largement acceptables. Au moyen d’entretiens avec les administrateurs et acteurs clés de Centres Dramatiques Nationaux (CDN), nous montrons que le contrôleur « facilitateur de compromis » se structure autour de l’absorption des contradictions, de la personnalisation de la quantification et de la mise en valeur de ses mesures et résultats pour répondre aux exigences du pilotage. Ces trois ensembles de pratiques et de discours permettent de mieux comprendre l’influence du contrôleur dans le processus de commensuration, à la fois agent d’une rationalisation du théâtre et d’une théâtralisation de la gestion. Ils éclairent la puissance et la résilience de ses ajustements, de ses savoir-faire et de ses jugements pour rendre indicateurs et nombres plus acceptables.
Earnings management tools during financial difficulties: evidence from French unlisted companies
Authors: Campa Domenico
Published: September 2020

Le premier objectif de cet article est de déterminer s’il existe une relation entre la détresse financière des entreprises et la gestion des résultats. Le second objectif est de déterminer comment la gestion des résultats est opérée durant ces périodes spécifiques de difficultés financières. Les données sont issues de la base ORBIS. Un échantillon de 6 190 compagnies non financières françaises non cotées est analysé sur la période 2009-2016. Les tests sont réalisés à partir d’analyses multivariées. Les résultats indiquent que plus les difficultés financières sont importantes, plus les sociétés ont recours à la gestion de leur résultat à la hausse. Pour cela, elles favorisent l’utilisation de variables impactant leur activité réelle plutôt que l’utilisation de variables comptables de régularisation discrétionnaires. Les résultats obtenus peuvent être ainsi particulièrement utiles aux auditeurs et aux organes de contrôle. En effet, il est démontré que, lors de périodes de difficultés financières, leurs diligences ne doivent pas uniquement portées sur les variables comptables de régularisation discrétionnaire telles que les provisions mais aussi sur les variables impactant les décisions d’exploitation, de financement ou d’investissement. Cette analyse participe à un débat bien connu, celui de la gestion du résultat. Les résultats obtenus démontrent que lorsque les sociétés traversent des périodes de difficultés financières, elles utilisent alternativement des variables comptables de régularisation discrétionnaire et des variables relatives à leur activité réelle afin de gérer leur résultat. Les résultats contribuent à la littérature qui porte sur le rôle des cadres institutionnels et sur la motivation des sociétés dans l’utilisation des outils de gestion du résultat.
L’annonce d’une mauvaise nouvelle : la nécessité d’un dialogue éthique
Authors: Mounier Frédéric , Laurent Laetitia , Buard Géraldine , Goujon Patrick
Published: September 2020

Le 16 novembre 2019, le Centre Laennec Paris et l’Université catholique de Lille ont organisé une rencontre sur un thème sensible : « Comment annoncer une mauvaise nouvelle ? », pour leurs étudiants. Laetitia Laurent, mère de deux garçons atteints de maladie orpheline, a rappelé les difficultés des parents lors de l’annonce. Puis Géraldine Buard, neurologue, est revenue sur son expérience de l’annonce de maladies neurologiques invalidantes. Enfin, Patrick Goujon, théologien et directeur du 1 er  cycle au Centre Sèvres 1 , a proposé sa réflexion sur le mode d’emploi du langage en de telles occasions. L’ordre des interventions, que vous retrouverez ici, reprend le déroulé d’une consultation médicale : le médecin expose au patient son problème de santé ; il lui communique un diagnostic et lui prodigue des soins ; il relit ensuite sa pratique.
Éthique et politique du soin : quel tournant à l’occasion de la pandémie ?
Authors: Saintôt Bruno
Published: September 2020

La pandémie de la Covid-19 n’est pas encore terminée ; ses effets sur la santé, la vie sociale, l’économie et la politique ne sont ni inventoriés ni mesurés parce qu’ils dépendent notamment de futures décisions politiques. Il serait donc prétentieux de faire des bilans et des recommandations assurés. Mais il est toutefois possible d’analyser en quoi cette pandémie devrait être l’occasion d’un tournant dans les manières collectives et professionnelles d’aborder l’éthique et la politique du soin.
Complications, Additional Surgery, and Joint Survival Analysis After Medial Open-Wedge High Tibial Osteotomy
Authors: Yapici Furkan , Aykut Umit Selcuk , Coskun Mehmet , Arslan Muhammet Coskun , Merder-Coskun Demet , Kocabiyik Ahmet , Ulu Erman , Bayhan Avni Ilhan , Kaygusuz Mehmet Akif
Published: September 2020

The reported incidence of complications following medial open-wedge high tibial osteotomy (MOWHTO) varies. The authors sought to assess the complications, additional surgeries, and joint survival following MOWHTO in patients with isolated medial compartment arthrosis during a mean follow-up of 10 years. This retrospective study involved patients implanted with spacer plates, angle adjustable plates, or inverse L-type plates with wedges between 2000 and 2010. A total of 504 knees from 441 patients were examined. Mean age of the study population was 52.6±7.0 years, with 56 (11.1%) knees from men and 448 (88.9%) from women. The 10-year Kaplan–Meier joint survival rate was 94.8%. Overall complication rate for MOWHTO was 63.7%, with complications in 20.3% of treated knees requiring additional surgery. In this population, although the overall complication rate and the need for additional surgery were high, the need for additional surgery resulting from serious complications was low (2.6%). The high joint survival rate and low rate of additional surgery for serious complications indicate that MOWHTO can be safely applied in patients with isolated medial gonarthrosis. [
Orthopedics
. 2020;43(5):303–314.]
Pediatric Care in the Age of COVID-19
Authors: Rodriguez Catherine , Morris Calli , Hsu Albert L.
Published: September 2020

Two pediatricians share perspectives on patient experience and delivery, future health care encounters, and social implications during the coronavirus 2019 pandemic. Collateral effects may comprise the most significant impacts on children, from limitations on hospital visitors, to closures of child-friendly hospital playrooms during this pandemic, to an alarming decrease in vaccination rates. Educational disparities will also likely widen, especially among those with limited access to technology at home.

[
Pediatr Ann
. 2020;49(9):e403–e404.]
Radiation in Pediatric Imaging: A Primer for Pediatricians
Authors: Acharya Patricia T. , Parentes Victoria , Frush Donald P. , Reid Janet R.
Published: September 2020

Medical imaging in children makes up a considerable percentage of all imaging procedures performed in the United States. Although in recent years there has been a 15% to 20% reduction in the exposure to ionizing radiation from medical imaging in the US population, the total number of computed tomography (CT) scans has increased from 2006 to 2016, and about 85% of all medical ionizing radiation in children is due to CT.

[
Pediatr Ann
. 2020;49(9):e370–e373.]
Imaging of the Infant with Vomiting
Authors: Kapral Nicole , Alazraki Adina , Daugherty Reza J.
Published: September 2020

Infants with vomiting is a common problem for which families seek pediatric advice or treatment. Determining which children need testing versus reassurance depends on the onset, quality, frequency, and associated symptoms. Vomiting may result from a congenital atresia, an error in embryonic rotation, or may be secondarily acquired.

[
Pediatr Ann
. 2020;49(9):e374–e379.]
Une famille du Nord et du Pas-de-Calais dans la Shoah
Authors: Laboux David
Published: September 2020

Une famille de modestes émigrés polonais juifs de Douai : Adolphe et Sosia Sokolski et leurs trois filles : Jacqueline, Arlette, Francine, furent victimes de la rafle des Juifs du Nord–Pas-de-Calais du 11 septembre 1942. Ils transitèrent par la gare de Lille-Fives puis furent dirigés vers la Caserne Dossin à Malines, camp de transit des Juifs de Belgique et du Nord–Pas-de-Calais. Déportées à Auschwitz, Sosia et ses trois filles furent gazées à leur arrivée. Adolphe, mis au travail, survécut à Auschwitz et Dachau. Libéré, il se remaria avec Thérèse, une survivante de la Shoah, et eut un enfant : Claude. À la mort de son père, en 1967, Claude découvre son secret qui lui fut caché : son ancienne famille.
Design and Control of Automated Guided Vehicle
Authors: Pham Quang Ha , Tran Ngoc Huy , Ton Thien Phuong
Published: September 2020

Autonomous Guided Vehicles (AGV) have the ability to operate on their own, perform tasks without human intervention. However, the investment cost is very high, so it is not suitable for countries with cheap workers like Vietnam. Therefore, this article will aim to build a complete AGV model that can move to the given coordinates. Model of AGV is 6-wheeled vehicles driven by 4 engines with the advantage of good movement in soft terrain, subsidence, ruggedness, slope, easy to balance and limit the vibration. Furthermore, we propose a method to improve the quality of the traditional A* algorithm by eliminating unnecessary intermediate points, which is Shortcut Path Reduction (SPR). Experimental results show that the vehicle can perform the bending technique, following straight lines and broken lines. Besides, the SPR not only met the requirements but also reduced the length of the journey.
A Research of Design Controller of 3D Printer DLP Technology
Authors: Nguyen Huy Bich , Vo Tuyen , Nguyen Tan Ken , Hoang Duc Lien
Published: September 2020

Nowadays, 3D printing technology is the national theme in Vietnam. Most countries have national strategies in research and development and widely apply 3D design and printing to all industries, organizations and people. 3D printing technology has been applied in many industries such as automotive, aviation, health, construction, electronics ... Almost all Digital Light Processing (DLP) 3D printing machine on ​​domestic market are imported from Chinese, Korean manufacturers ... with medium quality but high cost. The paper presents a study of application of selected design methods and tools of engineering design process to design DLP 3D printer driver with lower cost but equivalent quality with the other machine in series on the market that are imported from China.
Research on the Effect of Technical Attributes on the Tensile Strength of FDM Products
Authors: Huynh Huu Nghi , Bui Trong Hieu , Thai Thi Thu Ha , Nguyen Huu Tho
Published: September 2020

Nowadays, Fused Deposition Modelling (FDM) method has been growing rapidly, which can be used to fabricate complex parts within a reasonable time. The fabrication principle of FDM method is “layer by layer” so that the previous layer and subsequent layer don’t deposit each other to create the interface between two adjacent layers. Thus, the tensile strength of FDM product along building direction depends on various process parameters. In this study, five important process parameters such as layer thickness, build orientation, build style, infill density, and print temperature are considered. The effect on tensile strength is evaluated based on the tensile test of Polylactic Acid (PLA) part. The Design of experiment (DOE) based on the Central Composite Design (CCD) to consider the relationship between the process parameters and their response through the experimental data are gathered. The suitability of model is validated by Analysis of Variance (ANOVA) and t-test. Moreover, Artificial Neural Network (ANN) is also applied to predict the response for experimental model and compared with regression equation obtained from Response surface analysis (FCCCD). The results show that the predict value of ANN model is approximate to experiment value (R2 = 0.964), and the mean absolute error (MAE) of ANN model is smaller than those of FCCCD model. It is proved that ANN model is applicable to predict accurately the relationship between the process parameters and their response.
A Study on Application of Ultrasonic Wave and Ozone Micro-Bubbles in Leafy Vegetables Washing
Authors: Sam Luong Hong , Son Tran Anh
Published: September 2020

The demand for vegetable consumption is essential issue to serve citizens. Excessive protective chemical elimination which is applied advanced solutions brings high effects being investigated by domestic and international scientists. In this report, research team conducted and designed the vegetable washing machine integrated with the ultrasonic power and Ozone microbubbles to wash out plentiful protective chemicals attaching to surfaces of leafy vegetables. Followingly, using Taguchi method for four kinds of vegetables including salad, water spinach, Chinese cabbage, and mustard greens verifies the effectiveness of solutions. Vegetable samples are treated soaking pool making ultrasonic wave and Ozone microbubbles raging from 1.0ppm to 2.0ppm. The practical results demonstrated that the method using the ultrasonic power and Ozone microbubbles has high effects on eradicating protective chemical on leafy vegetables.
Heat Transfer Simulations and Analysis of Joint Cross-Sectional Microstructure on Friction Stir Welding between Steel and Aluminium
Authors: Nhat Truong Minh , Thanh Truong Quoc , Thong Tu Vinh , Quyet Tran Trong , Minh Luu Phuong
Published: September 2020

This study presents conducted heat simulations and experimental jointing flat-plate of aluminum alloy 6061 and SUS 304. Temperature is simulated by the COMSOL software in three states: (1) Preheat the Friction Stir Welding (FSW) by TIG welding, (2) Thermal contact resistance between Aluminium and steel, and (3) The welding process using stiring friction is simulated. The simulations intended to predicting the temperature which is used for preheat and welding process to ensuring the required solid-state welding. The temperature is also determined and checked by a thermal imager comparing with simulation results. Besides, the results of tensile strength is carried out. The Box - Behnken method is used to identify the relationship between the welding parameters (rotation, speed and offset), temperature and tensile strength. The maximum tensile strength is 77% compared to the strength of aluminum alloy. The optimal set of parameters for the process is n = 676 rpm, v = 46 mm / min and x = 0.6 mm. The optimizing welding parameters to achieving good quality of welding process are described. SEM images to determine some properties of welding materials. This is also the basis for initial research to identify some defects in welding of two different materials (IMC thickness and interconnected pores) and the cause of these defects.
Effectiveness of quadriceps muscle strengthening on knee joint stability and activities of daily living in patients with knee joint osteoarthritis
Authors: Kumarahewa C. V. , Amaratunga H. A.
Published: September 2020

Objectives: Knee is the largest weight bearing joint in the body and thereby is affected by diseases such as osteoarthritis more frequently. The aim of this study was to evaluate the effect of a 4 week physiotherapy exercise program, designed to improve quadriceps muscle strength and girth, and to observe its effect on knee pain and activities of daily life through a pre and post exercise analysis in patients with knee joint osteoarthritis (OA). Methods: Thirty patients diagnosed with knee joint osteoarthritis irrespective of gender, over the age of 45 and less than 75 years were recruited for the study. Initially knee joint pain severity was assessed using the VAS (visual analogue scales) and WOMAC questionnaire was used to assess the activities of daily living. The thigh circumference was measured in centimeters. Data was analyzed by SPSS 20. Results: Mean age of osteoarthritis patients was 54 years. There was a statistically significant, reduction in knee pain (p=0.001), improvement of quadriceps muscles girth (p=0.012) and an improvement of daily living activities (p=0.001) after engaging in the physiotherapy exercise program. Conclusion: A four week guided quadriceps muscle strengthening exercise program can significantly increase the quadriceps muscles girth and knee joint stability and reduce pain and improve the activities of daily living in patients with knee OA.
Case report: an adult presenting with congenital radio-ulnar synostosis
Authors: Gunasekara K. S. , Chinthaka R. G. , Dissanayake S.
Published: September 2020

No abstract available
A case report of severe veno-occlusive disease following autologous stem cell transplantation successfully treated with Defibrotide
Authors: Bahoush Gholamreza , Vafapour Maryam
Published: September 2020

Veno-occlusive disease (VOD) is one of the complications of hematopoietic stem cell transplantation that can also be caused by high-dose chemotherapy. This complication can lead to high mortality following bone marrow transplantation. It is more common after allogeneic stem cell transplantation, and is rare after autologous stem cell transplantation. While mild cases of VOD may reduce over a period of a few weeks, very severe cases can cause multi-organ damage, which has a high mortality. is therefore required with early diagnosis and treatment of this complication. In this paper, we present a sever VOD case after autologous stem cell transplantation, that was treated successfully with Defibrotide. The patient was a 14-month-old girl who has neuroblastoma with bone metastasis. VOD should be considered in the differential diagnosis of haematopoietic stem cell transplantation recipients who present with unexplained liver injuries, ascites and/or multi organ failure. Recipients of haematopoeitic stem cell transplantation who present with unexplained liver injuries, ascites and/or multi organ failure should have VOD considered in their differential diagnosis. If there is severe VOD diagnosed, then Defibrotide could be an option for treatment.
Extremophilic actinomycetes isolated from soil in Kazakhstan: Classification and antimicrobial activities
Authors: Zhulamanova Ainur , Koshenov Zhanat , Shamkeeva Saikal , Markhametova Zhannur , Abdukhakimova Diyora , Trenozhnikova Lyudmila , Azizan Azliyati
Published: September 2020

Extremophilic actinomycetes species are capable of surviving in extreme environment and producing antibiotics. In this study, we hypothesize that extremophiles produce antimicrobial compounds that are potentially novel agent(s) effective against drug resistant pathogens. The goal of this study is to test inhibitory activity of the extracts derived from extremophilic actinomycetes species against the most prevalent drug-resistant bacteria in Kazakhstani hospitals, and preliminarily analyze chemical composition of the active extracts. Actinomycetes species isolated from the soil of Kazakhstan were cultured in modified media mimicking extreme environment the species were isolated from. Antimicrobial compound(s) extracted with organic solvent were tested against conditionally pathogenic and multi-drug resistant pathogens Acinetobacter baumanni and Pseudomonas aeruginosa. Our study generated promising results regarding the potential discovery of novel components effective against drug resistant pathogens. Future studies will focus on further chemical analysis to identify the active component within these extremophilic extracts.
The Assessment of antimicrobial activity of cerumen (earwax) and antibiotics against pathogenic bacteria isolated from ear pus samples
Authors: Naz Iffat
Published: September 2020

The present study is focused on the assessment of the antimicrobial activity of cerumen and antibiotics against bacteria isolated from ear pus samples. Thus, a total of 50 ear pus samples were collected from infected patients using sterile swabs and were screened using pure culture techniques. Total of 04 different bacterial isolates were identified while, the prevalence data revealed that Pseudomonas spp., were dominant (58%, n = 29) among isolated bacteria followed by Staphylococcus spp., (22%, n = 11), Escherichia coli (14%, n = 7) and Proteus spp., (6%, n = 3). Further, bioassay revealed that Pseudomonas spp., and Staphylococcus spp., were most sensitive to Clindamycin (94.73%) while displayed resistant to Ciprofloxacin and Ampicillin. Similarly, E. coli and Proteus spp., were most sensitive to Ciprofloxacin (92.8-95.21%) as compared to the other antibiotics. Moreover, antibacterial activity of cerumen was also assessed against test organisms and its maximum activity was observed against Pseudomonas spp., (90% equivalent to Clindamycin potency) and Staphylococcus spp., (60% equivalent to Amoxicillin potency) while least effective against E. coli (36%) and Proteus spp., (22%). Thus, it was concluded that the antibacterial activity of cerumen might be due to the presence of potential chemicals i.e. flavonoids and terpenoids.
Endotracheal intubation using a three-dimensional printed airway model in a patient with Pierre Robin sequence and a history of tracheostomy -a case report-
Authors: Park Seyeon , Ahn Jisoo , Kim Hye-Jin , Choi Eun-Ji , Kim Hee Young
Published: September 2020

Background: Pierre Robin sequence (PRS) patients have an increased risk of difficult intubation due to anatomical airway abnormalities, and intubation simulation with a three-dimensional (3D) printed airway model before anesthesia may facilitate safe airway management. Case: We describe the case of a 6.5-year-old boy with a history of PRS (a triad of micrognathia, glossoptosis, and airway obstruction), tracheostomy, and subglottic fibrosis who required general anesthesia. Preparation for this potentially difficult intubation included estimation of endotracheal tube size using a 3D printed airway model derived from 3D computed tomography of the airway, which enabled successful endotracheal intubation via video laryngoscopy.Conclusions: If general anesthesia is necessary in patients with dysmorphic features such as PRS and there is a history of tracheal pathology, the possibility of difficult intubation should always be considered and simulation of endotracheal intubation using a 3D printed model of the airway can be helpful clinically in such situations.
Melatonin as an index of periodontal disease
Authors: Franco Rocco , Bollero Patrizio
Published: September 2020

Periodontal disease affects the supporting tissues of the tooth. The clinical manifestation varies from gingivitis to periodontitis. Periodontal disease is triggered by bacterial infection that releases toxins. The imbalance between oxidants and antioxidants determines the progression of periodontal disease. Melatonin (MEL) (N-acetyl-5-methoxytryptamine) is a hormone in the human body. Its production takes place in various organs including the retina, gastrointestinal tract, bone marrow, leukocytes, lymphocytes, skin, and principally pineal gland. Its main function is the regulation of circadian and seasonal rhythm, body weight, reproduction, bone metabolism, and tumor growth. An important function of melatonin is the ability to reduce oxidative stress. The aim of this work is to explain if there are differences in salivary melatonin concentration between periodontal and healthy individuals. The study was conducted utilizing the main scientific databases (PubMed, MEDLINE, and Web of Science). The time window considered for the electronic search was from March 1, 2007, to March 1, 2020. The work takes into account 6 works on the disease. Other studies were excluded as they did not meet the inclusion criteria. Studies revealed a concentration of salivary melatonin compared to patients with periodontal disease. Studies agree that the concentration of melatonin is lower in people with periodontal disease. Only one study showed no difference in concentration. Melatonin, therefore, has a protective effect on the periodontium thanks to its antioxidant properties. The salivary measurement of melatonin could be a useful tool for early detection. It can also be used as a therapy to improve the symptoms of periodontal disease.
Breast uptake on a myocardial perfusion scan
Authors: Morales Cristina , Apostol Angelin
Published: September 2020

A 42-year-old female underwent a myocardial perfusion scan (MPS) for the evaluation of coronary artery disease. Raw and cine loop images hinted at abnormal tracer accumulation in the chest. Review of short-axis slices and low-dose computed tomography images taken for attenuation correction and their subsequent fusion confirmed the presence of focal tracer uptake localized to nodular breast masses. This case demonstrates that despite MPS not being optimized to detect breast pathologies, careful inspection of unprocessed images and the application of available software for fusion can help detect concurrent pathology.
A case of dermatopathic lymphadenitis mimicking lymphoma on 18F-fluorodeoxyglucose positron emission tomography/computed tomography imaging
Authors: Ng Koon , Hui Yan , Kung Boom , Au Yong Ting
Published: September 2020

This case report illustrates a rare case of dermatopathic lymphadenitis with interval 18F-fluorodeoxyglucose positron emission tomography/computed tomography performed. The clinical presentation, imaging, and histological findings are described. We discuss the diagnostic challenges in this case.