The current lithium-ion battery (LIB) has become a vital technology for realizing a highly-productive society. The current system can be found easily in every personal electronic device, such as smartphones, laptops, smartwatches, and digital cameras. However, the future of LIBs is questionable due to the scarcity and security issues. The common electrolytes in this system are highly flammable, toxic, and easy to leak. Thus, inherit them to be applied for more mass-reliable energy sources, the terra-watt projects. Therefore, the development of an all-solid-state battery based on earth-abundant and cost-effective processing should be carried out immediately to dominate the market and for future civilization. Herein, we promoted a Sodium solid-state battery (SSB) that potentially be a key in energy storage technology due to its mechanical properties, electrochemical stability, high ion conductivity, and robust cyclic performance. Furthermore, a five-year direct implementation strategy of SSB was also presented, constructed from sodium and chromium electrodes.
The dependence on the imported bullet-proof vest as one of the main equipments of the National Defense System needs attention. This condition treats the independence of domestic defense security. In contrast, the potential of natural materials for bullet-proof vest plates are abundant in Indonesia. Nata de Coco is one of the natural raw materials for producing bullet-proof vest plates that has the potential to be developed. This preliminary research proved that increasing the bond strength of cellulose in Nata de Coco was performed by adding the appropriate crosslinkers. The addition of carboxymethylcellulose (CMC) 2% crosslinker to form Nata de Coco kevlar-like plates (Navlar) was evidenced to increase threefold tensile strength (99.15 MPa) from its original Nata de Coco (31.92 MPa). The development of Navlar is a very strategic sector for producing high-quality bullet-proof vest plates equivalent to kevlar strength. Navlar is more prospective than Kevlar due to its abundant source, cheap, lightweight, and ease to manufacture. Developing Navlar could replace the dependence on imported Kevlar and support the domestic defense industry.
Pandemi Covid-19 yang terus menyebar dengan cepat telah menimbulkan krisis ekonomi. Masyarakat perlu memiliki skill tambahan yang dapat meningkatkan potensi wirausaha mandiri masyarakat. Kegiatan ini bertujuan untuk meningkatkan potensi wirausaha mandiri ibu-ibu PKK Desa Tangkil melalui pelatihan pembuatan sabun cuci tangan dan hand sanitizer dan memberikan penyuluhan penyimpanan masker yang benar serta pentingnya melaksanakan 3M (mencuci tangan, memakai masker, dan menjaga jarak) untuk membatasi penularan Covid-19. Kegiatan ini dilakukan melalui tahap perencanaan, persiapan, pelaksanaan yang diawali dan diakhiri dengan survey, serta tahap evaluasi. Hasil kegiatan secara umum menunjukkan bahwa terjadi peningkatan kemampuan yang signifikan dalam pembuatan sabun cuci tangan dan hand sanitizer. Serta terjadi peningkatan kesadaran pentingnya penyimpanan masker dengan benar dan tetap melaksanakan 3M (mencuci tangan, memakai masker, dan menjaga jarak) untuk membatasi penularan Covid-19.
Thiazole derivative molecules with a low energy gap have been successfully designed using the DFT/TD-DFT calculation methods. The calculations were simulated by adding varied numbers of thiophenes (1, 2, 3, and 10) and electron donating molecules of –H, -NH2, -OCH3, and –COOH in the ethanol solvent. The best thiazole derivative was the molecule constructed using a long-conjugated bridge of 10-thiophenes, the carboxyl anchoring site, and an amine addition as the electron donating molecule with an energy gap of 1.66 eV and a strong UV-Vis absorption in the red light region (673.20 nm). These designed molecules are beneficial to be applied in the equator area such as Indonesia. Further, the profound effects of the thiophene bridge in terms of the structural and energy gaps, and the variation of electron-donating molecules affected the photonic properties have been demonstrated in this paper.
<div><p class="Els-history-head">The steel industry plays a pivotal role in driving the economy of a country because its production is used not only as raw material by many downstream industries, such as defense, machinery, and automotive industries, but also for infrastructure development, such as roads, bridges, and buildings. This study aims to analyze the role of the Indonesian steel industry in supporting the Indonesian defense industry and analyze the steel industry value chain, the competitiveness of domestic steel products against imported steel, and the relationship between the steel industry and the defense industry. This research used sequential mixed research methods, using raw data of manufacturing survey by Central Statistics Agency (BPS). Descriptive analysis, such as geometric growth rate, competitiveness analysis using the Trade Specialization Index (ISP), and analysis of the linkage between upstream and downstream steel industries using the 2010 Input-Output Table, employed in this research. The results showed that out of 16 million tons domestic demand for iron, more than half came from imports. Regarding the role of the steel industry in supporting the defense industry, it can be concluded that the contribution of domestic steel products is very small and has not been able to fully support the defense industry, because there are still many types of steel that must be imported to meet the needs for raw materials for the defense equipment. The 2010 Input-Output Table also shows that the value of domestic steel products used as raw material by the domestic weapons, ammunition, and metallurgy industries was only around IDR. 247.44 billion or only 0.14% of the total domestic use of steel.</p></div>
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