Bilingual Publishing Co. (BPC): E-Journals
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Evaluation of the mechanisms acting on the Atlantic Meridional Overturning Circulation in CESM2 for the 1pctCO2 experiment
No full textThe Atlantic Meridional Overturning Circulation (AMOC) is a crucial component of the Earth's climate system due to its fundamental role in heat distribution, carbon and oxygen transport, and the weather. Other climate components, such as the atmosphere and sea ice, influence the AMOC. Evaluating the physical mechanisms of those interactions is paramount to increasing knowledge about AMOC's functioning. In this study, the authors used outputs from the Community Earth System Model version 2 and observational data to investigate changes in the AMOC and the associated physical processes. Two DECK experiments were evaluated: piControl and 1pctCO2 , with an annual increase of 1% of atmospheric CO2 . The analysis revealed a significant decrease in the AMOC, associated with changes in mixed layer depth and buoyancy in high latitudes of the North Atlantic, resulting in the shutdown of deep convection and potentially affecting the formation of North Atlantic Deep Water and Antarctic Bottom Water. A vital aspect observed in this study is the association between increased runoff and reduced water evaporation, giving rise to a positive feedback process. Consequently, the rates of freshwater spreading have intensified during this period, which could lead to an accelerated disruption of the AMOC beyond the projections of existing models
The Impact of Perceived Parental Expectations on Career Adaptability: The Moderating Role of Parental Career Support
No full textBackground: Career adaptability is regarded as the core index to measure the adequacy of youth’s “career readiness”, which refers to the psychological resources of individuals to cope with current or expected career tasks, career changes or career difficulties. Methods: In this study, 529 students (246 male students, 46.5%, 283 female students, 53.5%) in the first grade of a senior high school in Beijing were assessed by the perceived Parental Expectation Scale, the Parental Career Support Scale and the Career Adaptability Scale. Results: (1) Parents’ expectations, parents’ career support and career adaptability were significantly positively correlated, and the scores were all higher than the average. (2) Parents’ expectations and parents’ careers are significantly positive predictors of career adaptability; (3) The variable of parental career support plays a moderating role in the path of perceived parental expectations on career adaptability. Conclusions: In the middle school stage, parents’ provision of career resources has a good promotion effect on students’ career preparation and coping with career difficulties
Exploring Alternatives to Create Digital Twins from and for Process Simulation
No full textIn this work, Digital Twins based on Neural Networks for the steady state production of styrene were generated. Thus, both the Aspen Technology AI Model Builder (alternative 1) and a homemade MS Excel VBA code connected to Aspen HYSYS and Aspen Plus (alternative 2) were used with this same aim. The raw data used for generating the Digital Twins were obtained from process simulations using Aspen HYSYS and/or Aspen Plus, which were connected through a recycle-like stream via automation for solving the entire simulation flowsheet. Aspen HYSYS was used for solving the pre-heating, reaction, and stabilization sections of the process whereas Aspen Plus ensured the computing of the separation and purification columns. Both alternatives led to an excellent prediction showing the capability of creating Digital Twins from and for process simulation
Antibacterial Potential of Pulp Capping Materials
No full textA critical analysis of the antibacterial effect of the main representatives of calcium silicate cements (CSCs) was made. An analysis of the most frequently used methods for screening the antibacterial activity of materials has been made. The inhibitory activity of CSCs against major types of microorganisms such as Candia albicans, E. faecalis, and strains streptococcus was evaluated and compared. The antibacterial effects of CSCs are not yet well and completely known because no evidence compares the antibacterial properties of bioceramic materials with a uniform methodological approach. It is important to provide standardization of testing methods for evaluating the antibacterial potential of the materials and different bacterial strains. To this stage, there are no reproducible and standardized methods for evaluating of antibacterial activity of CSCs
Analysis of the Geometry of Wear Tracks in Laser Deposited Stellite 6 Coatings
No full textA model has been developed to predict the wear groove geometry resulting from wear testing of Stellite 6 coatings on ferrous and nickel-based alloys produced by laser cladding with powers of 1 kW and 1.8 kW. Although the predictions of the model are close to the observed values, they differ in ways that can be accounted for by the incorrect assumption that only abrasive wear occurs. Abrasive wear is dominant, but there is also evidence that adhesive wear and plastic deformation occur and change the geometry and macrostructures of the wear tracks, particularly for the coatings on a Ni-based superalloy substrate. Significant differences were observed in wear track geometries and macrostructures for coatings on the substrates investigated and these differences correlate well with measured differences in the wear loss of the Stellite coatings
Back Bay Battery Simulation Reflective Essay
No full textThe success of an organization’s innovation strategy relies on a clearly defined innovation theme. In this article, the author will delve into the concept of disruptive innovation and explore how to achieve Horizon 2 ideas. Horizon 2 ideas involve extending the business’s current model and core competencies to reach new customers, markets, and even new business objectives in different segments. The business model extension under Horizon 2 focuses on the organization’s mid-term goals, typically taking 24 to 36 months to yield results. Drawing insights from the Harvard Business Review’s Back Bay Battery (BBB) simulation, this article presents the implementation of an innovation strategy within the BBB company. The aim is to assist the company in enhancing its business model and transitioning into the high-end market. The latter part of the article will shed light on the challenges associated with implementing this strategy in a real-world firm and the results it can deliver to the organization. Specifically, it will explore the effectiveness of the strategy in achieving disruptive innovation within the employee market, where the company intends to use the new business model to tap into new markets
Ishikawa Diagram, Gray Numbers and Pareto Principle for the Analysis of the Causes of WEEE Production in Cameroon: Case of SMEs Implementing ISO 14001:2015
No full textThe issue of Waste from Electrical and Electronic Equipment (WEEE) in Africa lacks a concrete answer at present. This study aimed to provide an integrated approach using qualitative and quantitative research methods based on the 80/20 principle and the grey system theory, in order to address the uncertainty in the existing literature. First, through a qualitative approach, the authors analysed the environment for the management of WEEE by eight companies in Cameroon, through a literature review and observations made in the field under the framework of the ISO 14001:2015 standard. Then, the weights of the selected cause of the WEEE using grey system theory were proposed and applied, combining the findings from both the qualitative and quantitative methods. Based on the data obtained through the analysis, the research results indicate that the assessed Cameroonian companies dealing with WEEE management can implement measures to reduce WEEE
Irrigation and Thermal Buffering Using Mathematical Modeling
No full textTwo methods of irrigation, drip, and sprinkler were studied to determine the response of the Javits green roof to irrigation. The control study was dry unirrigated plots. Drip irrigation consisted of irrigation tubes running through the green roof that would water the soil throughout and sprinkler irrigation used a sprinkler system to irrigate the green roof from above. In all cases, the irrigated roofs had increased the soil moisture, reduced temperatures of both the upper and lower surfaces, reduced growing medium temperatures and reduced air temperatures above the green roof relative to the unirrigated roof. The buffered temperature fluctuations were also studied via air conditioner energy consumption. There was a 28% reduction in air conditioner energy consumption and a 33% reduction in overall energy consumption between dry and irrigated plots. Values of thermal resistance or S were determined for accuracy and for this study, there was little change which is ideal. A series of infra-red and thermal probe measurements were used to determine temperatures in the air and sedum. It was determined that the sprinkler irrigation did a better job than the drip irrigation in keeping cooler temperatures within the green roof. A Mann-Whitney U test was performed to verify the variation in moisture temperatures buffering energy consumption. By getting a p-value < 0.05, it indicates that the model is accurate for prediction and medium temperatures were statistically different
Report of Lupus Encephalopathy in Two Patients with Systemic Lupus Erythematosus
No full textHow do you make a diagnosis of lupus encephalopathy (LE) in patients with systemic lupus erythematosus (SLE) concurrent with neurological and psychiatric abnormalities? This is a challenging question. We encountered two cases of SLE associated with LE. One involving the rigidity of the lefs due to extraparamidal vasculitis while the other involved mental illness due to frontal lobe atrophy respectively. The patient in case 2 experienced the attacks of Renault's sign, suggesting a systemic vasculitis. A final diagnosis of LE was established on the basis of elevated concentration of anti-ds-DNA in serum. The authors realized that the neurological or psychiatric symptoms in patients with rheumatic diseases should be carefully recognized in order to avoid a missed diagnosis of LE
Review on Activated Carbon for Supercapacitors
No full textCarbon is a lavish element that has a large number of composite elements. Activated carbon is the main source for storing the charge in the Supercapacitor. The management of waste is a big issue in Kathmandu Valley, and by converting the waste into activated carbon the waste management is somehow solved. The wet blue leather waste is found to be more reliable for making supercapacitors than the other waste material. The lowest value of capacitance is found in the eggshell material