showing 36 of ~574560 from 574555 documents
Raw material provenance of silicite artefacts: Korobchyne-Kurhan, Central Ukraine
2021
Korobchyne-kurhan stone age site in the Velyka Vys River basin, in Central Ukraine is investigated for raw material and contacts. The surrounding geography and the site are presented. The extensive search of outcrops around the monument resulted in nearer outcrops than was previously expected. Scientific investigations on 15 artefacts from Korobchyne-kurhan using non-destructive microfacies analysis allows us to have a first insight in the raw materials used by the prehistoric people and to give a detailed description from the encountered silicite varieties. Interestingly artefacts, composed of two different materials were found. That work confirms the use of the local materials as well as …
"En minä, mutta muut!" : EMMI-ilmiö kestävyysmurroksen esteenä
2021
Ympäristö- ja ilmastokriisien ratkaiseminen vaatii muutoksia kaikkialla yhteiskunnassa, erityisesti tuotannossa, kulutuksessa ja infrastruktuurissa. Tarvittavan kestävyysmurroksen esteinä toimii mm. institutionaalisia, rakenteellisia ja yksilöiden psykologiaan liittyviä tekijöitä. Kestävyysmurroksen edellytys on, että yhteiskunnan eri tasoilla tulisi tapahtua samansuuntaista, synergistä muutosta. Tähän nojaa esimerkiksi transitiotutkimuksen monitasotarkastelu. Kestävyysmurroksen käytännön toteutumisen kannalta oleellinen kysymys on, mille tahoille asetetaan vastuuta ekologisten kriisien ratkaisemisesta. Ympäristöongelmiin liittyvää vastuunsiirtoa itseltä muille havaitaan eri yhteiskunnan ta…
Slow Pyrolysis as a Method for Biochar Production from Carob Waste: Process Investigation and Products’ Characterization
2021
The zero-waste city challenge of the modern society is inevitably addressed to the development of model’s waste-to-energy. In this work, carob waste, largely used in the agro-industrial sector for sugar extraction or locust beangum (LBG) production, is considered as feedstock for the slow pyrolysis process. According to the Food and Agriculture Organization of the United Nations (FAO), in 2012, the world production of carobs was ca. 160,000 tons, mainly concentrated in the Mediterranean area (Spain, Italy, Morocco, Portugal, and Greece). To evaluate the biomass composition, at first, the carob waste was subjected to thermo-gravimetric analysis. The high content of fixed carbon suggest…
Supplementary material 1 from: Galasso G, Domina G, Angiolini C, Bacchetta G, Banfi E, Barberis D, Bardi S, Bartolucci F, Bonari G, Bovio M, Briozzo …
2021
Supplementary data
Resistenza a taglio di campioni rimaneggiati di Opalinus Clay
2021
La nota presenta una selezione dei risultati di un ampio programma sperimentale condotto con l’obiettivo di caratterizzare, dal punto di vista della resistenza a taglio, dei campioni rimaneggiati di Opalinus Clay, attraverso l’esecuzione di prove triassiali non convenzionali. I risultati mostrano chiaramente l’influenza del grado di preconsolidazione sul comportamento meccanico del geomateriale e in particolare sulla resistenza a taglio, che risulta caratterizzata da un picco di resistenza poco marcato e da un comportamento dilatante. La presenza di giunti all’interno del provino altera completamente il comportamento originario del materiale, che diventa duttile e contraente. Inoltre, in ta…
Fatigue, Physical Disability and Self-Efficacy as Predictors of the Acceptance of Illness and Health-Related Quality of Life in Patients with Multipl…
2021
Multiple sclerosis (MS) is a chronic progressive demyelinating disease of the central nervous system that leads to permanent disability and many neurological symptoms, making everyday functioning difficult. The predictors of the acceptance of illness and the health-related quality of life in people with MS include the degree of disability, neurological symptoms and psychosocial factors, such as personal resources. The aim of our study is to determine the relationships among disability, fatigue, self-efficacy, acceptance of illness and quality of life. The study group consisted of 137 people diagnosed with multiple sclerosis—73 women and 64 men. EDSS, GNDS, LSES, AIS and MSIS-29 were u…
Pants complex, TQFT and hyperbolic geometry
2021
We present a coarse perspective on relations of the $SU(2)$-Witten-Reshetikhin-Turaev TQFT, the Weil-Petersson geometry of the Teichm\"uller space, and volumes of hyperbolic 3-manifolds. Using data from the asymptotic expansions of the curve operators in the skein theoretic version of the $SU(2)$-TQFT, as developed by Blanchet, Habegger, Masbaum and Vogel, we define the quantum intersection number between pants decompositions of a closed surface. We show that the quantum intersection number admits two sided bounds in terms of the geometric intersection number and we use it to obtain a metric on the pants graph of surfaces. Using work of Brock we show that the pants graph equipped with this …
Od redakcji
2021
Aproximación a un estudio estilístico de la fraseología representada en la Crónica Troyana (Juan de Burgos, 1490)
2021
This article aims to contribute to the knowledge of Medieval Hispanic Phraseology by means of the stylistic analysis of the phraseological units, which are represented in the Crónica troyana (Juan de Burgos, 1490). To achieve this aim, this study is based on the methodological program proposed by Echenique Elizondo (2003), in order to tackle the historical and stylistic analysis of these units. From the selection of two passages referring to amor and to militia in the context of the Matter of Troy, the combinations contained in the Crónica troyana will be analyzed in contrast to the rest of peninsular versions derived from the Historia destructionis Troiae (c. 1287). This is intended to adv…
Terapias y actividades asistidas con animales para niños con TEA: un estudio de revisión
2021
Este trabajo incluye una revisión de la literatura publicada entre 2010 y 2019 que aborda la efectividad de las Terapias y Actividades Asistidas con Animales como intervención con niños y adolescentes con Trastorno del Espectro Autista (TEA). Se realizó una búsqueda bibliográfica en PsycINFO, PsycARTICLES, ProQuest, ERIC y Google Scholar, empleando los términos [(animal assisted therapy OR animal assisted intervention OR dog-assisted therapy OR equine-assisted therapy OR dolphin-assisted therapy) AND (autism OR ASD)]. Se identificaron 245 estudios, de los cuales se seleccionaron 40 con base en diferentes criterios de inclusión, tales como que las intervenciones descritas tengan un enfoque p…
EDITORIAL FOR SPECIAL ISSUE: “GEOMATICS APPLICATION FOR GEOGRAPHY (GAG)” in GEOGRAPHIA TECHNICA
2021
Geomatics or Geography, that is the question! This is how the authors' idea of merging Geomatics and Geography in this special issue begins, paraphrasing a Shakespearean citation. The common principle that unites these two scientific disciplines, which attempt to describe the territory in the most straightforward way possible. On the other hand, Geomatics and Geography derived from “gèo- “[greek γεω-], as first element of composed words in learned and scientific terminology, meaning “earth”, “globe”, “land surface”.
Dihydrophenanthrenes from a Sicilian Accession of Himantoglossum robertianum (Loisel.) P. Delforge Showed Antioxidant, Antimicrobial, and Antiprolife…
2021
The peculiar aspect that emerges from the study of Orchidaceae is the presence of various molecules, which are particularly interesting for pharmaceutical chemistry due to their wide range of biological resources. The aim of our study was to investigate the properties of two dihydrophenanthrenes, isolated, for the first time, from Himantoglossum robertianum (Loisel.) P. Delforge (Orchidaceae) bulbs and roots. Chemical and spectroscopic study of the bulbs and roots of Himantoglossumrobertianum (Loisel.) P. Delforge resulted in the isolation of two known dihydrophenanthrenes—loroglossol and hircinol—never isolated from this plant species. The structures were evaluated based on 1H-NMR, 13C-NMR…
Akadēmiskās paukošanās ekipējums
2021
Rakstā analizēta akadēmiskās paukošanās nozīme studentu korporāciju vidē, skaidrojot tās vēsturi un ideoloģisko nozīmi godu lietu risināšanā. Raksts ir balstīts uz 2021. gada decembra mēneša priekšmetu - Latviešu studentu korporācijas Fraternitas Cursica akadēmiskās paukošanās inventāru, kas pastāvīgi glabājās LU Muzeja krājumā vairāk kā 10 gadus. Tiek skaidrots arī, ka akadēmiskā paukošanās ir sporta veids, kas izpaužās ar akadēmiskās paukošanās turnīru organizēšanu studentu korporāciju starpā Latvijā un visā Baltijā.
Linking extreme seasonality and gene expression in arctic marine protists
2021
ABSTRACTAt high latitudes, strong seasonal differences in light availability affect marine organisms and restrict the timing of ecosystem processes. Marine protists are key players in Arctic aquatic ecosystems, yet little is known about their ecological roles over yearly cycles. This is especially true for the dark polar night period, which up until recently was assumed to be devoid of biological activity. A 12 million transcripts catalogue was built from 0.45-10 μm protist assemblages sampled over 13 months in a time series station in an arctic fjord in Svalbard. Community gene expression was correlated with seasonality, with light as the main driving factor. Transcript diversity and evenn…
Relationships between satisfaction with life, posttraumatic growth, coping strategies, and resilience in cancer survivors: A network analysis approach
2021
Objective Cancer survivors' satisfaction with life should be seen through the psychological factors related to a person's capabilities to face and handle the situation. This study aimed to (1) examine the relationships of satisfaction with life, posttraumatic growth, resilience and coping strategies in a global network model, (2) find the bridge indicators between satisfaction with life and the other constructs, and (3) test for the invariance of the network structures across several moderating variables. Methods In a heterogeneous sample of 696 cancer survivors (69% female; mean age = 53.1 ± 15.44 years; median time from being diagnosed = 4 years; breast cancer was the most frequent type o…
The Value of Auditor Industry Specialization: Evidence from a Structural Model
2021
ABSTRACT This study investigates the value of auditor industry specialization. In the first step, we use a discrete choice model to derive the first-order demand for auditor industry specialization. Our results reveal that clients have a general preference for auditor industry specialization, relating to both audit firm and audit office specialization. We observe that specializations at the audit firm and audit office level are substitutes. We also find that larger, more complex clients have a stronger demand for industry specialization at the audit office level. In the second step, we use the results from the discrete choice model to quantify the value of auditor industry specialists for c…
Multidimensional prognostic index and the risk of fractures: an 8-year longitudinal cohort study in the Osteoarthritis Initiative
2021
Abstract Summary In this longitudinal study, with a follow-up of 8 years, multidimensional prognostic index (MPI), a product of the comprehensive geriatric assessment, significantly predicted the onset of fractures in older people affected by knee osteoarthritis. Purpose Frailty may be associated with higher fracture risk, but limited research has been carried out using a multidimensional approach to frailty assessment and diagnosis. The present research aimed to investigate whether the MPI, based on comprehensive geriatric assessment (CGA), is associated with the risk of fractures in the Osteoarthritis Initiative (OAI) study. Methods Community-dwellers affected by knee OA or at high risk f…
Alcohol abuse and insomnia disorder: Focus on a group of night and day workers
2021
The sleep-wake cycle plays a fundamental role in maintaining the physiological balance of our body. Its alteration favours the genesis of several organic alterations and diseases including sleep disorders and the consumption of several substances of abuse. It has been reported that the work activity, especially that carried out during the night, is able to influence the sleep-wake cycle, promoting the development of insomnia, which, in turn, would subject the worker to a stressful condition such as to encourage adverse behaviour such as the use/abuse of psychotropic substances. Based on the above premises, the aim of our research was to evaluate, in night workers: (i) the pattern of consump…
Biotic homogenisation in bird communities leads to large‐scale changes in species associations
2021
The impact of global change on biodiversity is commonly assessed in terms of changes in species distributions, community richness and community composition. Whether and how much associations between species are also changing is much less documented. In this study, we quantify changes in large-scale patterns of species associations in bird communities in relation to changes in species composition. We use network approaches to build three community-aggregated indices reflecting complementary aspects of species association networks. We characterise the spatio–temporal dynamics of these indices using a large-scale and high-resolution dataset of bird co-abundances of 109 species monitored for 17…
Finite element analysis of a Bionate ring-shaped customized lumbar disc nucleus prosthesis
2021
[EN] Study design: Biomechanical study of a nucleus replacement with a finite element model. Objective: To validate a Bionate 80A ring-shaped nucleus replacement. Methods: The ANSYS lumbar spine model made from lumbar spine X-rays and magnetic resonance images obtained from cadaveric spine specimens were used. All materials were assumed homogeneous, isotropic, and linearly elastic. We studied three options: intact spine, nucleotomy, and nucleus implant. Two loading conditions were evaluated at L-3-L-4, L-4-L-5, and L-5-S-1 discs: a 1000 N axial compression load and this load after the addition of 8 Nm flexion moment in the sagittal plane plus 8 Nm axial rotation torque. Results: Maximum nuc…
Insulating Building Components Made from a Mixture of Waste and Vegetal Materials: Thermal Characterization of Nine New Products
2021
Nowadays, energy efficiency and sustainability are the fulcra of building policies. These policies promote the use of new technologies and materials that can reduce the primary energy involved and the environmental costs of construction, guarantying at the same time a high level of comfort for the building’s occupants. Synergy between previous construction techniques and the use of new materials should be pursued by employing materials with a low environmental impact and optimal thermal insulation properties. Within this framework, new materials derived from the agriculture sector, and waste or recycling products from the industrial/agricultural sectors have been studied. The aim of this pa…
Physical Activity and Sports Practice in Children and Adolescents at the Time of the COVID-19 Pandemic: Hypothetical Future Scenarios and Preventive …
2021
As a logical and direct consequence of the closure of schools and sports facilities, an expected reduction in the practice of physical activity (PA) and sports has been detected in both children and adolescents all over the world. Hence, we analysed the short-term and long-term consequences of the lack/low level of PA and sports activity in this population, which we referred to as primary and secondary risks, respectively, the latter of which have to be considered in hypothetical future scenarios.
Adaptive Backstepping Attitude Control of a Rigid Body with State Quantization
2021
Author's accepted manuscript © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. In this paper, the attitude tracking control problem of a rigid body is investigated where the states are quantized. An adaptive backstepping based control scheme is developed and a new approach to stability analysis is developed by constructing a new compensation scheme for the effect…
Coastal HF radars in the Mediterranean: Applications in support of science priorities and societal needs
2021
Abstract. The Mediterranean Sea is a prominent climate change hot spot, being their socio-economically vital coastal areas the most vulnerable targets for maritime safety, diverse met-ocean hazards and marine pollution. Providing an unprecedented spatial and temporal resolution at wide coastal areas, High-frequency radars (HFRs) have been steadily gaining recognition as an effective land-based remote sensing technology for a continuous monitoring of the surface circulation, increasingly waves and occasionally winds. HFR measurements have boosted the thorough scientific knowledge of coastal processes, also fostering a broad range of applications, which has promoted their integration in the C…
Coupling BEM and VEM for the Analysis of Composite Materials with Damage
2021
Numerical tools which are able to predict and explain the initiation and propagation of damage at the microscopic level in heterogeneous materials are of high interest for the analysis and design of modern materials. In this contribution, we report the application of a recently developed numerical scheme based on the coupling between the Virtual Element Method (VEM) and the Boundary Element Method (BEM) within the framework of continuum damage mechanics (CDM) to analyze the progressive loss of material integrity in heterogeneous materials with complex microstructures. VEM is a novel numerical technique that, allowing the use of general polygonal mesh elements, assures conspicuous simplific…
Accuracy of risk tools to predict critical bleeding in major trauma: A systematic review with meta-analysis.
2021
BACKGROUND Early detection of critical bleeding by accurate tools can help ensure rapid delivery of blood products to improve outcomes in major trauma patients. We conducted a systematic review to evaluate the accuracy of risk tools to predict critical bleeding in patients with major trauma. METHODS PubMed, Embase, and CENTRAL were searched up to February 2021 for studies investigating risk tools to predict critical bleeding for major trauma people in prehospital and emergency department. We followed the Preferred Reporting Items for Systematic Review and Meta-Analysis of Diagnostic Test Accuracy study guidelines. Two independent authors included studies, extracted data, appraised the quali…
Ieskats akadēmiskās paukošanās nodarbībā
2021
Video uzņemts 2021. gada decembra mēneša priekšmeta "Akadēmiskās paukošanās inventārs" ietvaros, lai iepazīstinātu interesentus, kā strādā akadēmiskā paukošanās praksē. Latviešu studentu korporācija Latvia sniedza atbalstu LU Muzejam video uzņemšanā, piesaistot aktīvākos un labākos paukotājus.
Éthique et consentement au contrat administratif
2021
Titre original dans le colloque : "Éthique et consentement au contrat"ISBN : 978-2-912589-58-3; International audience
Symptome einer Anpassungsstörung nach einer Unfallverletzung: Risiko- und Schutzfaktoren
2021
Symptoms of Adjustment Disorder after an accidental injury: risk and protective factors Objectives: The identification of protective and risk factors for symptoms of adjustment disorder (AD) after an accident injury. Methods: In this prospective long-term study, data from 73 patients with ankle and lower leg fractures were analyzed. Symptoms of AD were assessed at enrollment (T0), 1 month (T1) and 12 months (T2) after injury. In addition, questionnaires regarding adverse childhood experiences, coping strategies and the number of stressors during the last year were obtained. The Structured Clinical Interview for DSM-IV (SCID) was conducted at T1 and T2. Results: 4.1 % of patients met the cri…
Pandemic Language Teaching: Insights from Brazilian and International Teachers on the Pivot to Emergency Remote Instruction
2021
This article reflects on the experiences of language teachers from Brazil, Spain, France, Cyprus, Costa Rica and Taiwan during the pivot to emergency remote/online instruction during the 2020 pandemic. The research question motivating the study was what language teachers’ perceptions regarding online teaching during the pandemic were. Data were analyzed qualitatively, contrasting data from a questionnaire shared in an asynchronous online form with data from focus group interviews carried out via videoconferencing. The analysis of the questionnaire data showed that the vast majority of respondents used different digital technologies to teach online, both synchronously and asynchronously, but…
Design, Synthesis, Chemical and Biochemical Insights Into Novel Hybrid Spirooxindole-Based p53-MDM2 Inhibitors With Potential Bcl2 Signaling Attenuat…
2021
The tumor resistance to p53 activators posed a clinical challenge. Combination studies disclosed that concomitant administration of Bcl2 inhibitors can sensitize the tumor cells and induce apoptosis. In this study, we utilized a rapid synthetic route to synthesize two novel hybrid spirooxindole-based p53-MDM2 inhibitors endowed with Bcl2 signaling attenuation. The adducts mimic the thematic features of the chemically stable potent spiro [3H-indole-3,2′-pyrrolidin]-2(1H)-ones p53-MDM2 inhibitors, while installing a pyrrole ring via a carbonyl spacer inspired by the natural marine or synthetic products that efficiently inhibit Bcl2 family functions. A chemical insight into the two synthesized…
Life-course perspectives of milk consumption among young Norwegian women and their knowledge of milk as a source of iodine: a qualitative study.
2021
Mild to moderate iodine deficiency has been found among young Norwegian women of reproductive age. In Norway, cow’s milk is the main source of iodine; however, milk consumption is decreasing, particularly among young women. This study aimed to investigate milk consumption practices in young Norwegian women and their attitudes toward milk consumption from childhood to young adulthood in a life-course perspective and their knowledge of milk as a source of iodine. Convenience sampling was used to recruit 30 bachelor students (women, 18–25 years old) from five different study programs. Interpretative phenomenological analysis (IPA) was used to interpret milk consumption practices from a life-co…
MitraClip Implantation in Holography.
2021
Molecular Subtypes, Metastatic Pattern and Patient Age in Breast Cancer: An Analysis of Italian Network of Cancer Registries (AIRTUM) Data
2021
Breast cancer stage at diagnosis, patient age and molecular tumor subtype influence disease progression. The aim of this study was to analyze the relationships between these factors and survival in breast cancer patients among the Italian population using data from the AIRTUM national database. We enrolled women with primary breast cancer from 17 population-based cancer registries. Patients were subdivided into older (>69 years), middle (50–69 years) and younger age groups (<50 years) and their primary tumors categorized into four molecular subtypes based on hormone receptor (HR) and human epidermal growth factor receptor 2 (HER2) status. There were 8831 patients diagnosed betwe…
Polyester microplastic fibers affect soil physical properties and erosion as a function of soil type
2021
Microplastics are recognized as a factor of global change contaminating many environmental compartments. Agricultural soils are very likely to receive microplastic contamination and are of particular concern due to their role in food production. Microplastic fibers have already been shown to be able to affect soil properties, but their effect on different soil types is poorly understood. Moreover, limited information is available on how the presence of this pollutant can affect soil water erosion processes, which are extremely important issues in many environments. In the light of this, we performed two experiments (carried out on a microscale) to investigate how the presence of polyester m…
Cross-Device Augmented Reality Annotations Method for Asynchronous Collaboration in Unprepared Environments
2021
Augmented Reality (AR) annotations are a powerful way of communication when collaborators cannot be present at the same time in a given environment. However, this situation presents several challenges, for example: how to record the AR annotations for later consumption, how to align virtual and real world in unprepared environments or how to offer the annotations to users with different AR devices. In this paper we present a cross-device AR annotation method that allows users to create and display annotations asynchronously in environments without the need for prior preparation (AR markers, point cloud capture, etc.). This is achieved through an easy user-assisted calibration process and a …