Abstract:The 2nd International Conference on Computational & Applied Physics (ICCAP�2023) was held from October 8th to 10th, 2023. This conference was organized by the Laboratory of Physical-Chemical Inorganic Materials and their Applications (LPCMIA) at Blida1 University, within the Faculty of Sciences, Physics Department, in Algeria.
Abstract:This research aimed to assess the effectiveness of a plyometric training regimen in improving agility, speed, and social interaction among boys with mild intellectual disability (ID) aged 10-12, within the context of the Special Olympics. The study involved thirty-two boys (average age = 10.69 ± 0.8 years; average IQ = 61 ± 7) from three inclusive education centers. Over a period of 10 weeks, participants engaged in a plyometric training program twice a week. Evaluations were conducted before and after the intervention using the Reaction Time Test, 4-Corner Agility Test, 10-Meter Speed Run, 4x5 Meter Relay Test, and the Friendship Activity Scale (FAS). Significant improvements were observed across all measures. Reaction time decreased by 0.83 seconds (t = 7.44, p < 0.001), agility improved by 0.77 seconds (t = 11.93, p < 0.001), 4x5 meter speed increased by 0.61 m/s (t = 17.37, p < 0.001), and 10-meter run speed improved by 1.55 m/s (t = -12.76, p < 0.001). Furthermore, the FAS score rose by 0.81 points (t = 9.59, p < 0.001), indicating a boost in social interactions.The plyometric training program significantly enhanced agility, speed, and social interaction in children with mild intellectual disability, demonstrating its efficacy as an inclusive physical education strategy within the Special Olympics framework.
Abstract:AIMS Copper nanoparticles (CuNPs) etch and rinse (ER) adhesive on the survival rate of Streptococcus mutans (S.mutans) micro tensile bond strength (μTBS) and Degree of conversion (DC) with carious dentin. METHOD Mandibular teeth with carious lesions were included. S.mutans were inoculated on CAD. Samples were allocated based on the application of Opti Bond FL primer modified with CuNPs in different concentrations. Group 1: Unmodified ER adhesive, Group 2: 0.1wt% CuNPs+ER adhesive, Group 3: 0.5wt% CuNPs+ER adhesive, and Group 4: 1wt% CuNPs+ER adhesive. Samples inoculated with S.mutans underwent evaluation of their survival rates. Samples were restored and underwent μTBS and failure mode assessment. DC was assessed using FTIR. Statistical analysis was conducted using ANOVA and Tukey test to evaluate significant differences across groups in terms of antibacterial potency, μTBS of ER adhesive, and DC RESULTS Group-4 (1wt%CuNPs+ER) treated teeth exhibited the minimum bacterial survival. Group-1 (Unmodified ER adhesive) showed maximum scores S.mutans survival. The highest bond of composite to the CAD was observed in Group-3 (0.5wt % CuNPs + ER adhesive) samples. μTBS was found to be lowest in Group-1 CONCLUSION CuNPs to an etch and rinse adhesive system at a concentration of 0.1wt% is a practicable way to provide adhesive interfaces with antimicrobial activity while also improving μTBS.
Abstract:The purpose of this study is to investigate the relationship of the silk of Seres and the wild silkworm silk made by Bing-Yi Dong-Yi people of the East. The BingJam, BingGeum, and Bing-Yi were studied through knowledge of textiles type and wild silk JakJam fibers through cross-checking of Eastern and Western records. We investigated who Bing-Yi, the first silk weaver, were, and found that Bing-Yi people used 5-colored BingJam fibers of wild silkworm in WonGyo mountain of current Shandong to weave BingGeum brocade from about BC 2,300. BingJam was identified as JakJam or CheonJam when are harvested in fall, and Bing-Yi was called Pung-Yi and Ram-Yi as the people among Dong-Yi of GoJoseon Gu-Yi. The place where the first silk was produced was not India nor the center Jina, but the Dong-Yi in the Far East. And the jade sculptures in the shape of silkworm from Hongshan culture and Geum silk piece excavated from the Wiyoungja area are unrefutable evidences. Seres people were the Yuezhi, a capital or a part of Ma(k)Han among the Sam(k)Han GoJoseon, and they exported not only their silk brocade with sericin remains, but also the quality iron produced in Jin/Byeon(k)Han, and the luxury patterned furs which were the famous products of Bal Joseon.
Abstract:Fiber-reinforced polymer composites offer numerous advantages over conventional materials, due to their better specific strength and stiffness. The service conditions and manufacturing process of the laminated plate are the causes of delamination which is a critical issue that needs to be addressed. Localized stress increases in and surrounding the delaminated zone if incipient delamination is not detected and stopped. This accelerated delamination process, driven by localized stress, ultimately leads to the failure of the composite structure. Therefore, it is imperative to explore the dynamic characteristics of delaminated composite structures. This study focuses on assessing the impact of delamination at various interfaces on the vibration characteristics of composite square plates composed of multiple plies. It also investigates how factors such as the shape, severity, and location of delamination affect the vibration properties of the composite plate. The modal analysis results obtained from a Finite Element (FE) model created using ABAQUS software are compared and validated against analytical and experimental findings from prior literature. Additionally, an analytical model used for finite element modeling of the composite plate is presented. The findings reveal that modal parameters of delaminated plates can serve as valuable indicators for identifying the shape, severity, and location of delamination.
Abstract:Horticultural grafting plays a crucial role in the propagation of conifers, particularly those that are challenging to root from cuttings. In Albania, Leylandii and Goldcrest conifers are commonly used in parks and gardens for ornamental purposes. Some Italian nurseries have employed grafting techniques to create various Leylandii varieties. A study conducted in Albania focused on evaluating the grafting of Leylandii and Goldcrest onto Cupressus sempervirens L. rootstock to cultivate plants suitable for Albanian soils. The experiment involved nurturing grafted seedlings in carefully controlled conditions. Results indicated that the Goldcrest grafted onto the rootstock exhibited a higher growth rate than the Leylandii grafted with the same rootstock. The grafting compatibility percentages were 91% for Leylandii and 72% for Goldcrest.
Abstract:Effective organizational structure and culture are vital in shaping corporate dynamic capabilities, enabling microfilms to adapt and thrive in dynamic environments. It is curious that the previous studies diverge in conceptualizing the condition strategy of organizational culture and structure on the relationship between corporate dynamic capabilities and sustainable performance. Thus, this study advances structurization and culturalization in the empirical domain of microfirms. The aim of this study is twofold; first to examine the direct effects of knowledge sharing and sensing capability on sustainable performance, and second, to describe the moderation effects of organizational culture and structure in the relationship between sensing capability and knowledge sharing in shaping sustainable performance. The study is grounded on 602 employees of the dairy industry in Tanzania to test the conceptual research model constructed under the lens of KBV. We used the conditional process analyses and tested the study’s hypotheses. The findings affirmed conditional direct effects that sensing capability and knowledge sharing have positive significant effects on sustainable performance at a specified level of organizational culture and structure. Moreover, moderation analysis confirmed that organizational culture and structure dampen the relationship between knowledge sharing and sensing capability on sustainable performance. This study shed new light on the necessity of structurization and culturalization among employees of microfirms in emerging economies such as Tanzania.
Abstract:It is understood that the difference in daily sunlight duration between summer and winter seasons in T�rkiye is approximately 4 hours 51 minutes. In T�rkiye, a country located on both the European and Asian continents, it is a matter of curiosity whether the difference in daily sunlight duration of almost 5 hours, specific to the seasons, can have a significant effect on chronotypes. Especially the fact that the display of sports performance varies throughout the day according to chronotypes is of significant importance in the sports science community. Therefore, in this research, the relationship between the season of birth and chronotypes of the soccer players participating in the Development Leagues affiliated with the Turkish Soccer Federation during the 2022-2023 season was examined. The population of this cross-sectional study consisted of 8,952 soccer players, while the sample size was composed of 402 soccer players with a 95% confidence level. The survey technique was used for data collection, and in this context, the "Turkish form of Morningness-Eveningness Stability Scale" was employed. Based on the findings of this study, the conclusion reached is that the season of birth does not have a significant impact on the chronotypes of soccer players in the age range of 14-19. We believe that conducting further research in this field is important for a better understanding of chronotype mechanisms. It is recommended that future studies be conducted on different sample groups and in regions with varying altitudes.
Abstract:Nanostructured TiO2 were synthesized by using the hydrothermal method. Their physiochemical properties were characterized using FTIR, FESEM, XRD, BET and tested as antibacterial materials as well as photocatalyst for MO degradation. FTIR analysis showed the presence of O-H and Ti-O bonds for all samples studied. The phase and morphological structures of nanostructured TiO2 is dependent on the calcination temperature. The FESEM and TEM results showed that TiO2 nanotubes and TiO2 nanoparticles produced from hydrogen titanate after calcination at temperatures of 400 and 700. While at a temperature of 500, there is mixing between TiO2 nanotubes and nanoparticles. XRD analysis shows that as-synthesized is hydrogen trititanate while after calcination at temperatures of 400, 500 and 700 for 2 hours, TiO2 anatase is formed. The TiO2 nanotubes and nanoparticles exhibits large specific surface areas between 300 to 30 m2/g, thus displays good photocatalytic activity and antibacterial properties. The TiO2 nanotube structure has the best performance which successfully degrades 80% of methyl orange (MO) and a 15.44±0.26 mm inhibition zone against S. aureus was obtained at 0.20 M.
Abstract:In the Soviet territories of the former Russian Empire in the early 1920s, an attempt was made to carry out global concentration of production - the geographical concentration of production not of any range of a particular type of product, but of its entire volume. That is, the concentration of the type of industrial activity as such was assumed, the possibility of it in socialist society was justified by K. Marx. Due to objective and subjective factors, the only industry where such an attempt became possible was electrical machine-building, and during 1920�1923. the production of electric machines began to concentrate in Moscow and Petrograd, which undermined the potential of Ukrainian electric machine branch. Considering the political importance for the Soviet government of neutralizing this negative, the concentration of electrical machine-building activities in Soviet capitals from 1925 began to be presented as a result of the industrial policy of Tsarist Russia, what moved into historical works. However, the information available in the documents completely refutes this view, while simultaneously confirming the purposeful actions of the Soviet government to curtail the electrical machine industry in Ukraine.