scholarly journals National Metrology Infrastructure—Support for Analytical Laboratory Activity

Proceedings ◽  
2020 ◽  
Vol 55 (1) ◽  
pp. 21
Author(s):  
Mirella Buzoianu
Keyword(s):  
Reliable Measurement ◽  
Laboratory Activity ◽  
Starting Point ◽  
Wide Range ◽  
Measurement Results ◽  
End Use ◽  
Metrology Infrastructure ◽  
Manufacturing Science

Reliable, traceable, and comparable measurements provide a rational basis for evaluating the quality of any result and the starting point for laboratory accreditation. Accurate and compatible measurements are, at present, essential for manufacturing, science, and trade. Additionally, a wide range of aspects of the quality of life, from healthcare to sport, is underpinned by reliable measurement results. Starting from the role of a National Institute of Metrology (INM) in securing traceability of all measurements, regardless of their end-use or level of accuracy, some aspects related to the present state-of-art in the field of metrology in Romania are presented.

scholarly journals Thermal Physics and Glaucoma II: Preliminary Evidences for a Thermophysical Design of a Possible Visible-Light-Photons Therapy

2021 ◽  
Vol 11 (14) ◽  
pp. 6301
Author(s):  
Giulia Grisolia ◽  
Mariarosa Astori ◽  
Antonio Ponzetto ◽  
Antonio Vercesi ◽  
Umberto Lucia
Keyword(s):  
Quality Of Life ◽  
Thermodynamic Approach ◽  
Equilibrium Thermodynamic ◽  
Pharmacological Treatments ◽  
Light Stimulation ◽  
Cell Behaviour ◽  
Thermal Physics ◽  
Starting Point

Recently, a non-equilibrium thermodynamic approach has been developed in order to model the fundamental role of the membrane electric potential in the cell behaviour. A related new viewpoint is introduced, with a design of a photobiomodulation treatment in order to restore part of the visual field. Here, a first step in experimental evidence of the validity of the thermodynamic approach is developed. This result represents the starting point for future experimental improvements for light stimulation in order to improve the quality of life of the patients. The future possible therapy will be in addition to the pharmacological treatments.

scholarly journals 178Depression but not physical activity mediates the fatigue-mental quality of life relationship in multiple sclerosis

2021 ◽  
Vol 50 (Supplement_1) ◽  
Author(s):  
Alexander Fidao ◽  
Alysha De Livera ◽  
Tracey Weiland ◽  
George Jelinek ◽  
Sandra Neate ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Physical Activity ◽  
Multiple Sclerosis ◽  
Indirect Effect ◽  
Mediation Effect ◽  
Study Cohort ◽  
Wide Range ◽  
Clinically Significant

Abstract Background Fatigue is among the most prevalent symptoms of multiple sclerosis (MS), and significantly detrimental to mental quality of life. We examined the role of depression and physical activity as mediators in the fatigue-QoL relationship in MS. Methods Using an international study cohort measuring a wide range of lifestyle and clinical factors, determinants of fatigue (Fatigue Severity Scale) and mental quality of life (MSQoL-54; QoL) were assessed in 2,104 participants using log-binomial and linear regression, respectively. Structural equation modelling (SEM) was used to assess the mediating role of depression and physical activity between fatigue and mental QoL. Results The median mental QoL score in the sample was 73.8/100. The mean fatigue score was 40.5/63, with 65.6% having clinically significant fatigue. In SEM analyses evaluating depression as a mediator of the fatigue-QoL relationship, mental QoL was 14.17-points lower in those with clinically significant fatigue, of which the indirect effect via depression accounted for over 30.8% (p < 0.001). This mediation effect was most pronounced for the Role Limitations from Emotional Issues (44.9%, p < 0.001) and Emotional Wellbeing (41.6%, p < 0.001) subdomains. Evaluating physical activity as a mediator of the fatigue-QoL relationship, mental QoL was 11.03-points lower in those with clinically significant fatigue, of which the indirect effect via physical activity accounted for only 1.0% (p = 0.001). Conclusions This study provides evidence that depression accounts for a majority of the fatigue-mental QoL relationship, while physical activity only plays a small role. While replication and longitudinal studies are required for validation, our findings may inform the development of treatments for reducing the impacts of fatigue and improving QoL in people with MS. Key messages Fatigue’s negative impact on emotional quality of life in multiple sclerosis is not a function of reduced ambulation but instead its impact on depression. Reducing depression may thus markedly improve quality of life in this population.

Formation of the Printing Elements in the Photopolymer Material Used in Flexography

2014 ◽  
Vol 611-612 ◽  
pp. 883-891 ◽  
Author(s):  
Sanja Mahovic Poljacek ◽  
Tamara Tomasegovic ◽  
Tomislav Cigula ◽  
Miroslav Gojo ◽  
Diana Milcic
Keyword(s):  
Laser Ablation ◽  
Polymer Material ◽  
Major Influence ◽  
Printing Plate ◽  
Starting Point ◽  
Reproduction Process ◽  
Flexographic Printing ◽  
Printing Ink

Starting point of this paper is photopolymer printing plate used for flexographic printing. It is used for transfer of the printing ink onto the printing surface during the reproduction process. Photopolymer printing plate consists of several layers: polyester basis, photo sensitive polymer material and LAMS - Laser Ablation Mask. In the platemaking process the photosensitive material, which will form a printing plate, has to be several time exposed to different radiation in order to obtain a functional printability performance. LAMS layer has a role of masking in the exposure process. Upon pre-exposure, LAMS layer has to be removed by laser ablation only at the surfaces where photopolymer printing plate needs to be exposed. After ablation the exposures to UV lights follows and the plate will be finished with chemical removal of the unexposed parts of the polymer. Functionality of the finished printing plate has to be characterised and monitored in every procedure step because the formed image element on the printing plate has a major influence on the quality of the finished printed product. In this paper observing of the changes in the polymer material which is caused by exposure through LAMS layer will be performed. The aim is to measure the surface openings on the LAMS mask and to measure surface coverage (image elements) on the polymer material formed by exposure through the LAMS. Measuring will be made by image analysis software based on microscopic images of the control fields of differing halftone values. It is assumed that there will be a correlation between the LAMS openings and formed image elements on the printing plates. Preliminary results indicate that certain differences in image elements can be detected and are probably the consequence of the different amount of irradiated surface of the polymer material. Since the polymer material which forms the printing plate should be stable in the graphic reproduction process, results of the paper will explain the influence of UV exposures on polymerisation process and on the functional printability performance of the plates.

scholarly journals The role of advanced end-use technologies in long-term climate change mitigation: the interlinkage between primary bioenergy and energy end-use

2020 ◽  
Vol 163 (3) ◽  
pp. 1659-1673 ◽  
Author(s):  
Junichi Tsutsui ◽  
Hiromi Yamamoto ◽  
Shogo Sakamoto ◽  
Masahiro Sugiyama
Keyword(s):  
Land Use ◽  
Carbon Capture And Storage ◽  
Integrated Assessment Model ◽  
Assessment Model ◽  
Carbon Budgets ◽  
Environmental Implications ◽  
Multiple Series ◽  
Wide Range ◽  
End Use

AbstractThe role of advanced end-use technologies has been investigated in multiple series of scenarios using an integrated assessment model BET-GLUE, which comprises an energy-economic module (BET) and a bioenergy-land-use module (GLUE). The scenarios consider different technology assumptions on the availability of bioenergy with carbon capture and storage (BECCS) and end-use efficiencies featuring electrification under a wide range of carbon price trajectories, which start at 1–690 USD/tCO2 in 2030, increase at 4.5%/year, and level off in 2100. This scenario design allows close examination of energy, economic, and environmental implications of different levels of policy stringency and carbon budgets. While improving end-use efficiencies consistently decrease policy costs for a wide range of carbon budgets, the value of BECCS availability in terms of cost reduction is crucial only in a limited range toward lower budgets. Constraints on BECCS, including those indirectly imposed by the limited bioenergy supply, also tend to narrow the lower range of attainable budget levels, indicating technological and economic challenges, although they may have an impact on reducing the total budget including land-use emissions. Overall, the advanced end-use efficiency has a significant effect on the required level of policy stringency for a given climate goal, so that it can compensate for the biomass constraints.

scholarly journals The Role of Quality of Education in Neurocognitive Functioning in a Diverse Sample with Chronic Opioid Use Disorder

2019 ◽  
Vol 34 (7) ◽  
pp. 1269-1269
Author(s):  
J Olsen ◽  
J Arnsten ◽  
T Scott ◽  
F Arias ◽  
C Zhang ◽  
...  
Keyword(s):  
Executive Functioning ◽  
Opioid Use Disorder ◽  
Reading Level ◽  
Quality Of Education ◽  
Opioid Use ◽  
Significant Group ◽  
Wide Range ◽  
Chronic Opioid Use

Abstract Objective Literacy is a proxy for quality of education (QoE) and mediates ethnicity-related differences in neurocognitive (NC) performance in some populations (Manly et al., 2002; Rivera Mindt et al., 2008). However, it is unknown whether this relationship exists in the context of chronic opioid use disorder (OUD). This study examined the role of ethnicity, QoE, opioid use severity, and depression in predicting NC performance in a diverse sample of persons with OUD. Participants and Method This cross-sectional study included 74 adults with OUD (Age M = 40.3 [SD = 10.5]; Education M = 11.3 [2.5]; 24% female; 68% Latinx and 32% Non-Latinx White [NLW]). All participants completed comprehensive NC testing and psychiatric/substance use questionnaires. Variables included ethnicity (Latinx vs. Non-Latinx White), years of education, QoE (Wide Range Achievement Test, Third Edition; WRAT-3 Reading Standard Scores), opioid use severity (high vs. low OAT dose), current depression (Beck Depression Inventory, Second Edition; BDI-II Total Score), and demographically-corrected NC T-scores were computed and used for average domain T-scores (e.g., learning, memory, verbal fluency, executive function). Bivariate and ANCOVA analyses were used to compare ethnic groups. Results There were no significant group differences on opioid use severity or current depression (p’s > .05). However, compared to the NLW group, the Latinx group had lower years of education (M = 10.9 [SD = 1.7] vs. M = 12.2 [SD = 3.5]; t[72)] = 2.1, p < .05), QoE (M = 83.1 [SD = 13.6] vs. M = 94.8 [SD = 9.4]; t[72] = 3.8, p < .001), executive functioning (M = 42.0 [SD = 6.5] vs. M = 45.8 [SD = 8.5]; t[72) = 2.1, p < .05), and learning (M = 32.2 [SD = 8.2] vs. M = 37.8 [SD = 8.7]; t[72)] = 2.7, p < .05), with medium to large effect sizes (Cohen’s d > .50). The overall effect of ethnicity became non-significant for executive functioning after accounting for QoE (F[2,70] = 10.0, p = .002) and years of education (F[2,70)] = 16.8, p < .001). Conclusions The current study found that accounting for years of education and QoE attenuates some differences in NC performance between Latinx and Non-Latinx participants. References Manly, J. J., Jacobs, D. M., Touradji, P., Small, S. A., & Stern, Y. (2002). Reading level attenuates differences in neuropsychological test performance between African American and White elders. Journal of the International Neuropsychological Society, 8(3), 341-348. Mindt, M. R., Arentoft, A., Germano, K. K., D’Aquila, E., Scheiner, D., Pizzirusso, M., ... & Gollan, T. H. (2008). Neuropsychological, cognitive, and theoretical considerations for evaluation of bilingual individuals. Neuropsychology review, 18(3), 255-268.

ANALYSIS OF THE QUESTIONNAIRE FOR ASSESSING THE LEADERSHIP QUALITIES OF STUDENTS

2019 ◽  
Vol 5 ◽  
pp. 430
Author(s):  
Anatoly Maslak
Keyword(s):  
Latent Variables ◽  
Latent Variable ◽  
Theory Of Measurement ◽  
Interval Scale ◽  
Leadership Qualities ◽  
Wide Range ◽  
Measurement Results ◽  
Measuring Tool ◽  
Better Than

The quality of the questionnaire as a measuring tool largely determines the relevance of the results. The aim of the work is to analyze the quality of the questionnaire as a measuring tool used to evaluate the latent variable "leadership qualities of students". The study was conducted within the framework of the theory of measurement of latent variables, which has important advantages. First of all, the latent variable is determined operationally, through a set of indicators (questionnaire items), the more indicators, the higher the accuracy of the latent variable measurement. The latent variable and indicators are measured on the same interval scale in logits. This allows the use of a wide range of statistical procedures for the analysis of measurement results. The analysis of the following aspects of the quality of the questionnaire as a measuring tool: the presence of extreme indicators in the test, the compatibility of a set of indicators, the compliance of the questionnaire to the level of students on the measured latent variable, the uniformity of the distribution of indicators on the interval scale. The indicators that differentiate students with high and low levels of leadership qualities better than others are highlighted. Recommendations on the adjustment of the questionnaire as a measuring tool for assessing the leadership qualities of students are given. 

The Role of Social Workers in Supporting and Developing the Work of Foster Carers

1996 ◽  
Vol 20 (2) ◽  
pp. 21-26 ◽  
Author(s):  
Clive Sellick
Keyword(s):  
Social Work ◽  
Social Workers ◽  
Wide Range

The quality of relations between social workers and foster carers can virtually make or break a placement. Clive Sellick uses a wide range of social work literature to examine some of the conditions needed for these relations to succeed, both in the realm of practical organisation and in terms of individual qualities such as reliability, honesty, empathy and warmth.

scholarly journals Applications of Melatonin in Female Reproduction in the Context of Oxidative Stress

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Yonghui Jiang ◽  
Huangcong Shi ◽  
Yue Liu ◽  
Shigang Zhao ◽  
Han Zhao
Keyword(s):  
Oxidative Stress ◽  
Polycystic Ovary ◽  
Oocyte Quality ◽  
Early Embryo ◽  
Female Reproduction ◽  
Adverse Conditions ◽  
Wide Range

Oxidative stress has been recognized as one of the causal mediators of female infertility by affecting the oocyte quality and early embryo development. Improving oxidative stress is essential for reproductive health. Melatonin, a self-secreted antioxidant, has a wide range of effects by improving mitochondrial function and reducing the damage of reactive oxygen species (ROS). This minireview illustrates the applications of melatonin in reproduction from four aspects: physiological ovarian aging, vitrification freezing, in vitro maturation (IVM), and oxidative stress homeostasis imbalance associated with polycystic ovary syndrome (PCOS), emphasising the role of melatonin in improving the quality of oocytes in assisted reproduction and other adverse conditions.

scholarly journals Propuesta de Comunicación con Tecnología Óptica Pasiva en el Reparto “Carlos Manuel de Céspedes” de Bayamo, Cuba: opción de estudio para los universitarios

2017 ◽  
Vol 1 (8) ◽  
Author(s):  
Manleys Rodríguez Torres ◽  
Randy Verdecia Peña
Keyword(s):  
Access Network ◽  
University Student ◽  
Housing Sector ◽  
Power Budget ◽  
Starting Point ◽  
Wide Range ◽  
La Red ◽  
The University ◽  
Estudiantes Universitarios

El objetivo del trabajo consistió en diseñar una propuesta de comunicación para el reparto Carlos Manuel de Céspedes de Bayamo, Granma, Cuba. Para ello se tomó como campo investigativo 10 entidades y 1 061. Esta se basa en el despliegue de fibra óptica en el reparto en cuestión partiendo de la reutilización de la red de acceso existente. Dicho proyecto puede ser tomado como material de estudio por estudiantes universitarios. En la proposición de comunicación se concibe la inclusión de 9 MDU para dar servicios al sector residencial y 10 MDU para el sector empresarial, además, se incluye un splitter 1:32 y una OLT que se ubicaran en el sitio tecnológico y en el centro telefónico más cercano respectivamente. Para la marcha exitosa del trabajo se utilizaron métodos teóricos. La calidad de la propuesta de comunicación se verificó mediante el cálculo del presupuesto de potencia óptica, donde inciden las pérdidas provocadas por el equipamiento a utilizar. Se concluyó que con esta investigación se logra eliminar la demanda insatisfecha y permite que los clientes en sentido general puedan tener servicios de internet de banda ancha.  Palabras claves: Fibra óptica, sector residencial, sector empresarial, presupuesto de potencia, demanda insatisfecha, centro telefónico, sitio tecnológico   A proposal of communication with passive optic technology in the section “Carlos Manuel de Céspedes” of Bayamo, Cuba: an option of study for the university students Abstract  The objective of the work consisted in designing a communicative proposal in the section “Carlos Manuel de Cespedes”, in Bayamo, Cuba. There were taken 10 enterprises as the field researching as well as 1 061 s houses. It is based in the spread of optic fiber in that section taking as starting point the re-using of the existing access network. This project can be taken as a material fo studying the university student. In the proposal of communication it is glanced the inclution of 9 MDU to give service to the housing sector and 10 MDU for enterprises, it is also included 1:32 splitter and OLT that will be located in the technological place and in the closed telephone center. Fort he successful trend of the work there were used some theoratical methods, the quality of the proposal of communication was verified through the calculus budget of optic power, where the roduced power joint together collapse. It was concluded that with this research it is achieved to eliminated the unccessful demand it permits the overall users could have internet services wide range.  Keywords: optical fiber, housing sector, enterprise sector, power budget, unccessful demand, telephone center, technological place

scholarly journals Teaching the learners with a migrant background – teachers’ perspectives

2020 ◽  
Vol 56 (1) ◽  
pp. 53-70
Author(s):  
Małgorzata Pamuła-Behrens ◽  
Marta Szymańska
Keyword(s):  
Dropping Out ◽  
Migrant Education ◽  
Migrant Background ◽  
Education Community ◽  
Starting Point ◽  
Training Courses ◽  
School Failures ◽  
Teachers Perspectives

As a result of the growing number of migrants in Poland, schools accept increasing numbers of learners with a migrant background (immigrants and reimmigrants), and they are not always able to successfully help the newcomers in their integration. Therefore, it is necessary to undertake specific support activities. Related shortcomings result in many school failures among many migrants, their dropping out of schools and as a result gaining little if any qualifications. At the same time, the researchers indicated the role of teachers in the education of children with a migrant background. The level of their training and the quality of the support they can offer determines the success or lack thereof of their pupils. In the article the researchers discussed a study (Stage 2 in particular) the purpose of which was to diagnose and analyse the needs of the education community in terms of migrant education and integration. The following question was the starting point: What do schools need to be able to better teach and integrate learners with a migrant background? The study of needs organised as a focus group gathered teachers teaching pupils with a migrant background with various levels of training, and a headmaster of a school attended by migrants. The analysis of the collected material indicated three areas where teachers need particular support: systemic organisation of accepting and educating learners with a migrant background, access to materials, and the ability to participate in additional training courses and acquire new competences.

Sign in / Sign up

Export Citation Format

Share Document