Tujuan penelitian ini adalah untuk mengetahui seberapa besar pengaruh metode latihan Hand Grip terhadap kekuatan genggaman tangan pada Atlet putra Pelatcab Kota Bekasi. Metode yang dilakukan dalam penelitian ini adalah metode eksperimen, jumlah populasi 15 orang Atlet Pelatcab Kota Bekasi dan sampel yang diambil 15 orang Atlet Pelatcab Kota Bekasi. Teknik pengambilan sampel dalam penelitian ini adalah menggunakan teknik total sampling. Teknik total sampling adalah pengambilan sampel yang sama dengan jumlah populasi. Hasil dari penelitian ini terdapat pengaruh yang signifikan pada metode latihan Hand Grip terhadap kekuatan genggaman tangan pada Atlet putra Pelatcab Petanque Kota Bekasi sebelum melakukan treatment dan sesudah melakukan treatment, ini terbukti dari hasil uji t diperoleh t hitung = 7.72 pada alpha 5% atau (α) = 0,05. Kesimpulan yang di dapat dari penilitian ini adalah terjadinya peningkatan yang signifikan terhadap kekuatan genggaman tangan karena adanya latian yang continue sebanyak 14 kali pada latihan Hand Grip.
Seawater batteries have attracted significant attention for use as grid-scale energy storage systems (ESSs) due to the effective utilization of abundant resources of seawater as a catholyte. Sodium ions in seawater selectively transfer through a solid electrolyte to the anode for saving the chemical energy. For the selective transfer of sodium ions, NASICON (Na3Zr2Si2PO12) electrolytes are one of the suitable candidates for the solid electrolyte to prevent a short circuit between the catholyte and anode. However, NASICON powder is known to be dissolved in water because of the structural instability, leading to catastrophic failure of the system, while NASICON solid electrolytes are stable in seawater during the battery operation. In this regard, we have carefully compared the stability of NASICON powder and pellets in both DI water and seawater associated with different degradation mechanism. Figure shows the structural stability of NASICON pellets after the immersion tests in DI water and seawater indicative of the chemical stability of NASICON in seawater. In addition, the electrochemical performance shows higher stability of the seawater-immersed electrolyte than the DI water-immersed electrolyte. The corresponding analyses are carried out to confirm the effect of the investigation. Furthermore, we have employed polymer coating methods to enhance stability and performance as a seawater battery system. The coating layer enables to prevent direct contact with seawater, resulting in longer stability during operation without compromising ionic conductivity. These results reveal that NASICON solid electrolytes can be operated in seawater with high stability and performance. Figure. The chemical stability comparison of NASICON in seawater and DI water References Mauvy, F., Siebert, E., & Fabry, P. (1999). Reactivity of NASICON with water and interpretation of the detection limit of a NASICON based Na+ion selective electrode. Talanta , 48(2), 293–303. Fuentes, R. O., Figueiredo, F., Marques, F. M. B., & Franco, J. I. (2001). Reaction of NASICON with water, Solid State Ionics , 263, 309–314. Kim, Y., Kim, H., Park, S., Seo, I., & Kim, Y. (2016). Na ion- Conducting Ceramic as Solid Electrolyte for Rechargeable Seawater Batteries. Electrochimica Acta , 191, 1–7. Jung, J. Il, Kim, D., Kim, H., Jo, Y. N., Park, J. S., & Kim, Y. (2017). Progressive Assessment on the Decomposition Reaction of Na Superionic Conducting Ceramics. ACS Applied Materials & Interfaces , 9(1), 304–310. Figure 1
Pengembangan lapangan migas masih sangat digencarkan, khususnya pada Lapangan "Kaprasida". Pada lapangan ini dilakukan studi pengembangan terhadap reservoar sekunder, yaitu pada Formasi Transisi, Upper Menggala, dan Lower Menggala. Reservoar sekunder masih menyimpan beberapa struktur jebakan hidrokarbon yang perlu analisis lebih dalam. Oleh karena itu, pada lapangan ini dilakukan proses reinterpretasi terhadap patahan dan lapisan tersebut, sehingga menghasilkan peta struktur domain waktu. Maksud dari penelitian ini adalah untuk melakukan reinterpretasi yang menghasilkan peta struktur domain waktu, sehingga dapat melakukan analisis pada peta struktur. Setelah dilakukan analisis pada peta struktur domain waktu ketiga lapisan, didapatkan beberapa zona target berupa beberapa struktur antiklin. Zonasi struktur antiklin terdapat pada wilayah barat TG2, selatan TG2, timur TG2, barat TG4, dan utara TG1. Dari hasil penelitian ini diharapkan dapat memberikan struktur jebakan hidrokarbon baru untuk kegiatan pengembangan Lapangan "Kaprasida".
PT Kereta Api Indonesia (KAI) is a railway transportation service provider in Indonesia. In 2019, KAI launched railway courier service to support logistic sector, called Rail Express. Despite the advantages of railway courier service in providing low-cost fee and minimum risk of time delay and accident, low market penetration indicates brand awareness in the market is still very low. The main objective of this study is to develop customer-based brand equity strategy for railway courier service, by using Rail Express as the case to carry out the research. This study used a series of qualitative method research to fully comprehend the business situation and propose the solution to the business problem. First, in-depth interviews were conducted to the management and staff of KAI to assess external and internal environments of railway courier service. Second, focus group discussions were conducted to gain consumers’ insight related to brand awareness and brand image of Rail Express. The discussion was attended by 16 participants that represent Rail Express target market of e-commerce buyer and seller. Third, this study used TOWS matrix to generate business solution alternatives based on previous analysis findings. As the result, this study formulated three main strategies to build customer-based brand equity: first, integrated marketing communication to establish brand awareness by increasing brand recall and brand recognition; second, brand repositioning to establish brand image by developing brand associations related to positive image and technology; and third, improvement on existing marketing mix, i.e., product, distribution channel, and price strategies.
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