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Disaster education for early childhood is crucial, especially in Indonesia, which is located within the Ring of Fire, an area prone to various disasters, including tsunamis. Children are a vulnerable group in disaster situations, as they are susceptible to physical and psychological negative impacts. In this context, a game-based approach becomes an attractive alternative as it combines interactive and enjoyable learning experiences. The objective of this study is to explore the effectiveness of using this game as a means of teaching tsunami preparedness. The Tsunami Survival game has visually appealing, child-friendly graphics and easily understandable elements. This study was conducted at Darul Hikmah Kindergarten in Kajhu Village, Aceh Besar District, focusing on the utilization of a game-based approach, specifically the Roblox-based Tsunami Survival game, to educate and stimulate disaster preparedness skills among 20 children aged 4-6 years. The game has equipped children about the actions to be taken during a tsunami through engaging storytelling and gameplay. It incorporates age-appropriate content, interactive gameplay, and virtual scenarios to engage children in learning about evacuation, emergency response, and survival skills. Pre- and post-intervention assessments were conducted to evaluate the impact of the game-based approach on the children's disaster preparedness skills. At the same time, questionnaires and interviews gathered qualitative data on their engagement and perceived learning outcomes. The expected outcomes include improvement knowledge and awareness of tsunami preparedness, as well as insights into the practical implementation of game-based learning in early childhood education. This research contributes to the development of effective strategies for disaster education and resilience-building among young children, leveraging the popularity and accessibility of gaming platforms.

Next generation demanding aerospace systems requirements are pushing the titanium alloy performance needs beyond the upper limits of the workhorse alloy Ti 6Al-4V (Ti 6-4), necessitating the use of advanced solutions. This paper provides an overview of Arconic’s lightweight solution to address the needs of future aerospace fastening systems. The key attributes for aerospace fasteners are strength (tensile, double shear, and fatigue) and manufacturability (ability to forge heads and roll threads while meeting metallurgical and dimensional requirements) at an affordable cost. In particular, increasing double shear strength (DSS) while meeting other requirements is very challenging. Typically, DSS is about 60% of the tensile strength for Ti 6-4, restricting Ti applications to moderate strength levels. Limited deep hardenability of Ti 6-4 (≤0.5”) also restricts the usage to smaller diameter fasteners. Beta Ti alloys (e.g. Beta C) capable of achieving high tensile strengths suffer from shortfalls in DSS and producibility. There is a need for an affordable high strength Ti alloy that can extend titanium fastener usage to higher strength levels and larger size (up to 1”), which will enable reduction in number of joints and weight reductions by replacing higher density nickel/steel fasteners. Ti 6Al-2Sn-2Zr-2Cr-2Mo (Ti 6-22-22), a judiciously balanced α + β Ti alloy, designed and developed by RMI Titanium Company in the early 1970s for thick-section aerospace structural applications with a need for higher strengths than Ti 6-4, is capable of meeting demanding fastener requirements of next generation aerospace systems. Superior producibility and ability to tailor processing-microstructure-property relationships in Ti 6-22-22 for achieving performance improvements will be discussed in this paper.

L'objectif du travail est de déterminer la prévalence de l'infection par le VIH chez les tuberculeux hospitalisés au service des maladies infectieuses du CHU Ibn Rochd-Casablanca et de chercher les facteurs associés à la co-infection Tuberculose-VIH. Nous avons mené une étude transversale rétrospective menée en Novembre 2016, en se basant sur l'exploitation de la base de données du service des maladies infectieuses, des laboratoires de microbiologie et d'immunologie du CHU Ibn Rochd. Etaient inclus les patients ayant une tuberculose confirmée par culture positive sur milieu de Lowenstein Jensen et une infection à VIH confirmée par Western Blot entre Janvier 2013 et Décembre 2015. Au cours de la période de l'étude, 117 cas de tuberculose ont été confirmés par culture. Parmi ces patients, 46 (39,3%) avaient une infection à VIH confirmée. Trente-quatre patients co-infectés (73,9%) avaient une tuberculose extra pulmonaire (cette forme était associée à la co-infection (p=0,04)). Tous les patients ont été mis sous traitement antituberculeux et antirétroviral selon l'indication. L'évolution était favorable chez 32 patients (69,6%) et 10 décès ont été enregistrés (21,7%). La mortalité était plus élevée chez les co-infectés que chez les tuberculeux non atteints par le VIH (8,4%), (p=0,04). Cette étude a objectivé une prévalence relativement élevée de l'infection par le VIH parmi les tuberculeux. La co-infection Tuberculose-VIH est associée aux formes graves de la tuberculose et à une augmentation de la mortalité chez les tuberculeux, d'où l'intérêt du renforcement des activités conjointes de lutte contre cette co-infection.

Hydrogen isclassified as New Energy and also considered as the most promising transportation fuel candidate in the future. Various pilots test of hydrogen fuel cell vehicles by the world's leading automotive industries since the last 50 years have begun to show bright spot in the utilization of hydrogen-based fuel cells as vehicle fuel. The electrolysis process of water (H2O) would produce H2 (hydrogen) and O2 (oxygen). The conventional method resulted in inconsistent volume and quality of HHO gas. However, the current development of HHO gas production through electrolysis process varies in term of materials, production process, design of certain tools, and technical modifications to obtain optimum results. In this research, the Hybrid Multistack TypeHHO generator has been designed and developed by combining two types of dry and wet cell generators. In this study using both cell type generator (wet and dry cell) or called as a hybrid type. Through the process of electrolysis in HHO enclosure space, the HHO gas was produced. The volume of HHO gas obtained from the HHO generator as an alternative fuel is strongly influenced by the electrical current supplied and the concentration of KOH catalyst used. The test was conducted with four stages of catalyst amount from 5.6g/L; 11.2g/L; 16.8g/L; and 22.4g/L. The applied current is linearly increased, with the increasing HHO gas production. It is proven when with the amount of catalyst used at 22.4g/L, the average HHO gas produced is 230.3mL/min. The author analyzes the performance of the generator in term of current and HHO gas production at a predetermined 12V constant voltage.