bluuebunny/crossref_metadata_2025_split huggingface dataset:
ENVIRONMENTAL BENEFIT OF TWO-LAYER STEEL FIBERED HIGH-PERFORMANCE CONCRETE BEAMS
Authors: Pushkar Svetlana , Ribakov Yuri 
Published: September 2021

ABSTRACT
This study evaluated Life-Cycle Assessment (LCA) of two different designs of high-performance concrete beam: (1) a single-layer beam (SLB) that consisted of steel fibered high-strength concrete in both the compression and tensile zones and (2) a two-layer beam (TLB) that consisted of steel fibered high-strength concrete and normal-strength concrete in the compression and tensile zones, respectively. The SLB and steel fibered high-strength concrete layer of the TLB were of the same concrete class C70/85. LCAs of the SLB and TLB were conducted using the ReCiPe2016 midpoint and endpoint-single-score methods. The difference between the two endpoint-single-score results was evaluated using a two-stage nested analysis of variance. The ReCiPe2016 midpoint results showed that replacing the SLB with the TLB reduces the environmental impact of global warming potential, terrestrial ecotoxicity, water consumption, and scarcity of fossil resources by 15%, 17%, 11%, and 17%, respectively. The ReCiPe2016 endpoint-single-score results showed that the environmental damage from the TLB compared to the SLB was statistically reduced (p = 0.0256). Therefore, considering two different designs of steel fibered high-strength concrete beams, the TLB design was found environmentally preferable to SLB design on both, midpoint and endpoint-single-score evaluations.
IMPACTS OF BUILDING FUNCTION ON NORMALIZED-STEAM CONSUMPTION: ANALYSIS OF FLOOR AREA NORMALIZATION VERSUS LINEAR REGRESSION ON HEATING DEGREE-DAYS IN A HEATING-DOMINATED CLIMATE
Authors: Mohajer Mahsa Farid , Aksamija Ajla 
Published: September 2021

ABSTRACT
Linear regression analysis is one the most common methods for weather-normalizing energy data, where energy versus degree-days is plotted, quantifying the impacts of outside temperature on buildings’ energy use. However, this approach solely considers dry-bulb temperature, while other climate variables are ignored. In addition, depending on buildings’ internal loads, weather impact can be less influential, making the linear regression method not applicable for energy data normalization in internally driven buildings (such as research laboratory buildings, healthcare facilities, etc.). In this study, several existing buildings from different categories, all located on the University of Massachusetts Amherst campus and exposed to the same weather conditions in a heating-dominated climate, were analyzed. For all cases, regression of monthly steam use on heating degree-days and floor-area normalized steam data were used, investigating applicability of the former when the latter changes. It was found that internal loads can skew steam consumption, depending on the building functionality, making the effect of degree-days negligible. For laboratory-type buildings, besides heating and domestic hot water production, steam is also used for scientific experiments. Here, daily occupancy percentage, even during weekends and holidays, was higher than that of other buildings, indicating the intensity of scientific experiments performed. This significantly impacted steam consumption, resulting in higher floor-area-normalized steam usage. In these cases, steam use did not provide an outstanding correlation to heating degree-days. Whereas, for cases with other functionality-types and lower floor-area normalized steam, coefficients of determination in regressions were high. This study concludes that even for buildings located in the same climate, depending on how building functionality and occupancy schedule influence floor-area normalized steam use, multivariate linear regression can provide more accurate analysis, rather than simple linear regression of steam on heating degree-days.
Analyse rétrospective de programmes de recherches collaboratives en langues modernes à l’Université de Liège
Authors: Beckers Jacqueline , Simons Germain 
Published: September 2021

Cet article synthétise les résultats d’une étude visant à « revisiter » cinq programmes de recherches-actions menées par deux services de l’Université de Liège (Belgique) dans le domaine de l’enseignement/ apprentissage des langues étrangères à la lumière de deux éclairages théoriques distincts mais complémentaires. Le premier cadre théorique est celui des différentes étapes de la recherche collaborative (la cosituation, la coopération, la coproduction) proposées par Desgagné et al. (2001) ; le second est celui des genèses instrumentales, conceptuelles, identitaires (Pastré, 2005). Les cinq recherches collaboratives sont d’abord brièvement synthétisées. Ensuite, nous explicitons les fondements théoriques sous-jacents aux programmes de recherches collaboratives. Enfin, nous tentons d’établir des liens avec certains de nos programmes de recherches en nous basant sur les résultats d’une enquête réalisée auprès des professeurs-partenaires et des chercheurs.
Collaboration entre chercheur et acteurs : rôle de l’objet d’étude et de l’observatoire dans une approche « cours d’action »
Authors: Perrin Nicolas 
Published: September 2021

Cette contribution interroge l’articulation entre recherche et formation au sein du programme empirique du « cours d’action ». Elle se focalise d’une part sur la définition de l’objet d’étude et d’autre part sur la nature de l’activité sollicitée par l’observatoire du « cours d’action ». L’observatoire du « cours d’action » (Theureau, 2006, 2009b) a pour but de renseigner l’activité des acteurs et consiste à les remettre en situation dynamique à l’aide de traces pour favoriser la verbalisation de la conscience préréflexive. Une distinction claire est alors opérée entre les verbalisations et les commentaires analytiques ou les prises de conscience. Cette distinction n’est toutefois pas évidente à tenir dans l’analyse d’une situation de formation. La réflexion porte sur les relations entre les conditions de collaboration et la définition progressive d’un objet de recherche, sur l’activité sollicitée par l’observatoire du « cours d’action » et les prises de conscience effectuées par les acteurs à cette occasion.
Le projet TBM : un exemple de modalité de collaboration entre chercheurs et praticiens en Norvège
Authors: Berg Claire Vaugelade 
Published: September 2021

Cet article a un double objectif : d’abord offrir une description des principales caractéristiques d’un projet de recherche en cours en Norvège, ensuite, à l’aide d’un exemple, approfondir la relation entre le cadre méthodologique adopté dans notre projet et la pratique des enseignants. Cette recherche est ancrée dans un cadre théorique basé sur les notions de co-apprentissage et de communauté de pratique où la notion d’« inquiry » joue un rôle central. Les questions vives émergeant de ce projet sont présentées et discutées, en particulier la relation entre savoirs issus de l’expérience et savoirs issus de la recherche. Dans ce texte, nous utilisons le mot « inquiry » car sa traduction par le mot « enquête » est trop réductrice.
Peptide Presentations of Marsupial MHC Class I Visualize Immune Features of Lower Mammals Paralleled with Bats
Authors: Wang Pengyan , Yue Can , Liu Kefang , Lu Dan , Liu Sai , Yao Sijia , Li Xin , Su Xiaoling , Ren Keyi , Chai Yan , Qi Jianxun , Zhao Yingze , Lou Yongliang , Sun Zeyu , Gao George F , Liu William J 
Published: September 2021

Abstract
Marsupials are one of three major mammalian lineages that include the placental eutherians and the egg-laying monotremes. The marsupial brushtail possum is an important protected species in the Australian forest ecosystem. Molecules encoded by the MHC genes are essential mediators of adaptive immune responses in virus–host interactions. Yet, nothing is known about the peptide presentation features of any marsupial MHC class I (MHC I). This study identified a series of possum MHC I Trvu-UB*01:01 binding peptides derived from wobbly possum disease virus (WPDV), a lethal virus of both captive and feral possum populations, and unveiled the structure of marsupial peptide/MHC I complex. Notably, we found the two brushtail possum–specific insertions, the 3-aa Ile52Glu53Arg54 and 1-aa Arg154 insertions are located in the Trvu-UB*01:01 peptide binding groove (PBG). The 3-aa insertion plays a pivotal role in maintaining the stability of the N terminus of Trvu-UB*01:01 PBG. This aspect of marsupial PBG is unexpectedly similar to the bat MHC I Ptal-N*01:01 and is shared with lower vertebrates from elasmobranch to monotreme, indicating an evolution hotspot that may have emerged from the pathogen–host interactions. Residue Arg154 insertion, located in the α2 helix, is available for TCR recognition, and it has a particular influence on promoting the anchoring of peptide WPDV-12. These findings add significantly to our understanding of adaptive immunity in marsupials and its evolution in vertebrates. Our findings have the potential to impact the conservation of the protected species brushtail possum and other marsupial species.
Skin aging in patients with chronic obstructive pulmonary disease of different ages
Authors: Abdalrazik Fatmaalzahraa S. , Bedair Nermeen I. , Yaseen Noha N. 
Published: September 2021

Background
Chronic obstructive pulmonary disease (COPD) is characterized by exaggerated systemic inflammation that affects different body systems including the skin. Skin aging is a reported consequence.

Patients and methods
The study recruited 40 patients with COPD in addition to 60 healthy controls. Although all patients with COPD were smokers, controls comprised 27 smokers and 33 nonsmokers. Participants were classified according to their ages into younger age group (<40 years, n=37) and older age group (>40 years, n=63). All patients were subjected to careful history taking, thorough clinical examination, and pulmonary function testing at the time of skin biopsy. COPD diagnosis and grading of severity was based on the GOLD criteria. Dermatological examination included identification of skin type according to Fitzpatrick skin type classification, skin aging grade, and histopathological examination.

Results
In the younger group, COPD subgroup had significantly larger mean elastic fiber area, length, and perimeter when compared with the other two subgroups. In the older age group, the patients with COPD and control smokers’ subgroups had significantly larger total elastin fibers area when compared with nonsmokers. In both age groups, it was found that patients with severe/very severe COPD had significantly larger total elastic fibers area when compared with patients with moderate disease.

Conclusions
The present study found significant relation between skin aging and both smoking and COPD. The study noted that this relation may be affected by patients’ age.
Change in sleep-wake cycle, use of digital media and emotional wellbeing amidst COVID-19 lockdown amongst dental students in India
Authors: Rathod Surekha Ramrao , Gonde Noopur Pradeep , Kolte Abhay Pandurang , Jadhav Ashwini Narendra 
Published: September 2021

Background:
Maharashtra is one of the major hotspots affected with COVID-19 infection in India. By imposing lockdown to implement preventive and control strategies, entire world is trying to contain the spread of this potentially fatal pandemic. Lockdown has compelled people to stay at home, refrain from their day-to-day activity and lead to drastic lifestyle changes.

Aim:
The aim of the study was to assess the impact of COVID-19 pandemic lockdown on sleep-wake pattern and emotional status among Bachelor of Dental Surgery undergraduate students.

Materials and Methods:
This observational online survey was carried out among the undergraduate students of our dental college. The question on individual sleep cycle, wake up pattern, eating habits, working hours, screen time on T.V., mobile, and laptop were addressed before and during the lockdown. The results were tabulated and analyzed using the SPSS software version 17.0. If P < 0.001, the results were reported to be statistically significant.

Results:
Statistical difference was observed in the usage of digital media, change in their sleep wake pattern, and eating habits among dental students during the lockdown period after applying paired test with P < 0.001. Furthermore, these unpredictable changes in their working hour, sleeping pattern, eating habits, and concern about spending time build stressful situation among students.

Conclusion:
It can be concluded that the dental students have increased level of stress and disturbance in sleep-wake cycle and emotional well-being during this COVID-19 lockdown.
Medical education in Russia: vectors of reboot in pandemic conditions
Authors: Litvinova T. M. , Galuzina I. I. , Zasova L. V. , Prisyazhnaya N. V. 
Published: September 2021

The pandemic of the new coronavirus infection, determined, the need for accelerated transformations in the fi of national health, as well as a change in the usual principles and approaches in the system of higher medical education. The article, using the example of the Sechenov University case as the flagship of higher medical education in the country, analyzes the experience of operational restructuring of the organization of the university’s activities and highlights the key vectors of the educational process reorganization and training of medical personnel in the context of the spread of COVID-19.Sechenov University, based on the existing digital content modified the lecture materials into a digital format, adapted individual distance learning algorithms to the educational process of a medical university. The result is the preservation of the quality of education, the adaptation of educational programs, taking into account new formats and technologies for the delivery of knowledge, a flexible response to the demands of consumers of educational services of the University.
Perancangan Alat Penanggulangan Kebakaran Berbasis Mikrokontroler Arduino Uno R3
Authors: Ramadhan Bintang , Amin Muhammad , Hidayatullah Hidayatullah 
Published: September 2021

Maraknya korban jiwa pada kebakaran disebabkan karena kurangnya pengamanan dan lambatnya sistem pengamanan yang terdapat pada suatu peristiwa kebakaran, sebuah kelalaian dan labatnya proses pengamanan menjadi suatu hal yang dapat menimbulkan korban jiwa, akan tetapi dengan kita mengembangkan dan memanfaatkan teknolgi kita bisa membuat sebuah inovasi baru untuk mengantisipasi berbagai bencana yang terjadi. Metode yang digunakan dalam pembuatan alat ini dengan cara metode eksperimen. Alat ini bekerja mendeteksi cahaya api menggunakan Flame Sensor dan mendeteksi asap menggunakan Sensor MQ2 lalu keluaran sensor berupa data yang diolah oleh arduino dengan menggunakan pemograman yang sudah diprogram dengan
actuator berbentuk buzzer, ISD 1820, servo dan relay.
SYSTEM DYNAMICS APPROACH FOR WHOLE LIFE CYCLE COST MODELLING OF RESIDENTIAL BUILDING PROJECTS IN UNITED ARAB EMIRATES
Authors: Sadek Ahmed 
Published: September 2021

Purpose – Project management field is experiencing many challenges to maintain its performance within planned budget. Latest research focused on cost modelling and estimation. The significance of cost modelling comes from the forecasted information value. It is needed in the United Arab Emirates to satisfy the future vision and strategies.
Methodology – This article aims to model project's whole life cycle costs of residential buildings in UAE at the preconstruction stage, choosing VENSIM system dynamics approach. The objective is to simulate dynamically cost over time for all outputs. The approach of this research is pure quantitative. It requires mapping diagrams and mathematical computation systems. DEMO simulation and real data verification modelling are used to ensure the outputs’ validity. The mean absolute deviation and mean square error are used for measuring the estimation accuracy.
Findings – This research proved that VENSIM system dynamics approach can model and estimate residential building project’s cost and cash flow dynamically through time, with high accuracy, in the United Arab Emirates.
Unique contribution to theory, practice and policy – This research provides the first cost estimation modelling for residential projects’ whole life cycle using VENSIM system dynamics approach. It is opening new research opportunities in cost modelling and estimating fields. The theoretical-implications, practical-implications, and limitations are presented in the conclusion for future research.
Type D personality and acceptance of illness in people with inflammatory bowel diseases. Mediating role of self-esteem
Authors: Graf Olga , Urbańska Beata , Uram Patrycja 
Published: September 2021

BackgroundType D personality is analyzed more and more frequently in the context of various chronic illnesses, including bowel diseases. Acceptance of illness is affected by many factors that facilitate adaptation to the difficulties and limitations and support the heal-ing process. One of those factors may be self-esteem.Participants and procedureOne hundred fifty-nine individuals, aged 18 to 65, participated in the study. 67% (n = 107) stated that they have ulcerative colitis (UC), and the remaining 33% (n = 52) reported suffering from Crohn’s disease (CD). The following measurement tools were used: Rosenberg Self-Esteem Scale (SES), Acceptance of Illness Scale (AIS), and Personality Type D Scale (D14).ResultsThe conducted analyses revealed significant correlations between all studied elements. Self-esteem was proven to be a full medi-ator in relations between one of the dimensions of type D personality, negative affectivity, as well as between both dimensions of type D personality (negative affectivity and social inhibition) and acceptance of illness in individuals with bowel diseases. However, mediation analysis did not confirm that self-esteem is a mediator between social inhibition and acceptance of illness.ConclusionsThe results show that self-esteem is, for an individual, an essential resource in coping with an illness and adjusting to it. There-fore, providing patient support in the scope of reinforcing self-esteem may prove to be one of the key elements affecting illness acceptance.
Successful endovascular embolization of a giant splenic artery pseudoaneurysm secondary to a huge pancreatic pseudocyst with concomitant spleen invasion
Authors: Borzelli Antonio , Amodio Francesco , Pane Francesco , Coppola Milena , Silvestre Mattia , Di Serafino Marco , Corvino Fabio , Giurazza Francesco , Niola Raffaella 
Published: September 2021

Pseudoaneurysms of the pancreatic and peripancreatic arteries is a well-known complication of chronic or necrotizing pancreatitis due to proteolytic enzymatic digestion of the arterial wall. A major part of peripancreatic pseudoaneurysms involve the splenic artery, but any peripancreatic artery may be involved and bleed. They are potentially life threatening for patients, due to spontaneous intraperitoneal rupture, rupture and fistulization into the surrounding organs, or fistulization into the pancreatic duct. Small ones are usually asymptomatic and are often diagnosed incidentally, while giant (> 5 cm) aneurysms and pseudoaneurysms are symptomatic and may be detected as a pulsatile mass in the upper-left quadrant or epigastrium. Imaging plays a key role in the identification of splenic artery aneurysms and pseudoaneurysms, while angiography still represents the gold standard for the diagnosis, although nowadays it plays a prominent role in treatment. Treatment of splenic artery pseudoaneurysms is mandatory because of the high probability of rupture, with a mortality rate of up to 90%. The gold standard treatment is represented by surgery, with a mortality rate between 16% and 50%. In recent years the endovascular approach has proven to be an effective alternative treatment for splenic artery pseudoaneurysms, and it is currently the method of choice. In this article, we present the case of a ant pseudoaneurysm of the splenic artery due to huge pseudocysts in a young alcoholic patient with recurrent and chronic pancreatitis, complicated by fistulization and invasion of spleen parenchyma and arterio-venous fistula.
A new inverse modeling approach for emission sources based on the DDM-3D and 3DVAR techniques: an application to air quality forecasts in the Beijing–Tianjin–Hebei region
Authors: Cheng Xinghong , Hao Zilong , Zang Zengliang , Liu Zhiquan , Xu Xiangde , Wang Shuisheng , Liu Yuelin , Hu Yiwen , Ma Xiaodan 
Published: September 2021

Abstract. We develop a new inversion method which is suitable for linear and
nonlinear emission source (ES) modeling, based on the three-dimensional
decoupled direct (DDM-3D) sensitivity analysis module in the Community
Multiscale Air Quality (CMAQ) model and the three-dimensional variational
(3DVAR) data assimilation technique. We established the explicit observation
operator matrix between the ES and receptor concentrations and the
background error covariance (BEC) matrix of the ES, which can reflect the
impacts of uncertainties of the ES on assimilation. Then we constructed the
inversion model of the ES by combining the sensitivity analysis with 3DVAR
techniques. We performed the simulation experiment using the inversion model for a heavy haze case study in the Beijing–Tianjin–Hebei (BTH) region during 27–30 December 2016. Results show that the spatial distribution of sensitivities of SO2 and NOx ESs to their concentrations, as well as the BEC matrix of ES, is reasonable. Using an a posteriori inversed ES, underestimations of SO2 and NO2 during the heavy haze period are
remarkably improved, especially for NO2. Spatial distributions of
SO2 and NO2 concentrations simulated by the constrained ES were
more accurate compared with an a priori ES in the BTH region. The temporal variations
in regionally averaged SO2, NO2, and O3 modeled
concentrations using an a posteriori inversed ES are consistent with in situ observations
at 45 stations over the BTH region, and simulation errors decrease
significantly. These results are of great significance for studies on the
formation mechanism of heavy haze, the reduction of uncertainties of the ES and its
dynamic updating, and the provision of accurate “virtual” emission inventories for
air-quality forecasts and decision-making services for optimization control
of air pollution.
Application of a mobile laboratory using a selected-ion flow-tube mass spectrometer (SIFT-MS) for characterisation of volatile organic compounds and atmospheric trace gases
Authors: Wagner Rebecca L. , Farren Naomi J. , Davison Jack , Young Stuart , Hopkins James R. , Lewis Alastair C. , Carslaw David C. , Shaw Marvin D. 
Published: September 2021

Abstract. Over the last 2 decades, the importance of emissions source types of atmospheric pollutants in urban areas has undergone significant change. In particular, there has been a considerable reduction in emissions associated with road vehicles. Understanding the role played by different source sectors is important if effective air pollution control is to be achieved. Current atmospheric measurements are made at fixed monitoring sites, most of which do not include the measurement of volatile organic compounds (VOCs), so our understanding of the temporal and spatial variation of pollutants is limited. Here we describe the application of a mobile laboratory using a selected-ion flow-tube mass spectrometer (SIFT-MS) and other trace gas instrumentation to provide on-road, high-spatial- and temporal-resolution measurements of CO2, CH4, VOCs and other trace gases. We then illustrate the potential of this platform for developing source characterisation methods that account for the similarity in correlation between species. Finally, we consider the benefits of high-spatial- and temporal-resolution measurements in characterising different types of sources, which would be difficult or impossible for single-species studies.