Abstract:This study aims to analyze the effect of increasing servicescape and modernization of Public Fuel Filling Station (SPBU) services on the purchase decision of Pertamax Series products with perceived value as a mediating variable.…
ariable. This study uses a Systematic Literature Review (SLR) approach combined with bibliometric analysis to identify, map, and synthesize relevant research developments related to the quality of the service environment, modernization of fuel retail services, perceived value by consumers, and purchasing decisions. Research data was obtained from various reputable scientific articles indexed in academic databases such as Scopus and Google Scholar with a range of publications of the last ten years. The literature selection process is carried out systematically through the stages of identification, screening, feasibility, and inclusion using the PRISMA guidelines. Bibliometric analysis is used to map research trends, author collaboration, and keyword linkages analyzed using VOSviewer software. The results of the study show that increasing servicescape such as facility comfort, cleanliness, physical design, and the availability of supporting facilities is able to increase consumer perception of gas station services. In addition, service modernization through payment digitalization, self-service systems, and technology-based service innovations also strengthen customer experience. The combination of these two factors has been proven to increase perceived value which ultimately encourages consumers to make a decision to purchase Pertamax Series products. The findings of this study make a conceptual contribution to the development of a study of consumer behavior in the energy retail sector and provide practical implications for petrol station managers in designing strategies to improve service quality and modernize facilities to increase consumer preference for high-quality fuels.
Abstract:This study aims to identify the petrological and petrographical characteristics of carbonate rocks that act as natural asphalt (Asbuton) reservoir rocks in the Winning area, Buton Regency. The analysis was conducted through…
ugh megascopic observation of rock outcrops and microscopic observation of thin sections using a polarizing microscope. The results show that the carbonate rock units in the study area are dominated by bioclastic limestone (biomicrite) and dolomitic limestone (biogenic dolomite). The bioclastic limestone consists of foraminiferal and shell fragments bound by micrite and sparry calcite cement, whereas the dolomitic limestone displays fine- to medium-crystalline textures with well-developed intercrystalline porosity formed through dolomitization. Partial to advanced dolomitization occurred due to the circulation of magnesium-rich fluids in a restricted marine environment during the post-depositional stage. The mineralogical transformation from calcite to dolomite enhanced both porosity and compactness, making these rocks potential reservoir rocks for natural asphalt accumulation. Overall, the petrological and petrographical characteristics indicate that the carbonate rocks in the Winning area underwent a complex diagenetic evolution and play a significant role in the formation and entrapment system of Buton Rock Asphalt (Asbuton).
Abstract:The scarcity of petroleum resources or other fuel sources encourages efforts to find alternative energy, namely Bioethanol. Alternative raw materials that can be utilised in the manufacture of bioethanol from biomass are…
re pineapple crowns. Making Bioethanol from Pineapple Fruit Crown Cayane Variety by Using Saccharomyces cerevisiae Microbes is by varying the weight of yeast and the optimum fermentation time on the level of bioethanol produced. In this study using NaOH 1.5%w to degrade the lignin content in the crown of pineapple varieties cayane and H2SO4 2%v to convert cellulose into glucose. The research used variations in yeast weight of 7.5%; 10%; 12.5%w and variations in fermentation time of 2; 3; 4; 5 days in the fermentation process. While the purification process uses simple distillation with operating conditions 78oC-80oC for 2.5 -4 hours. Bioethanol obtained was tested for refractive index and gask romatography (GC). The test results obtained the optimum weight of yeast is 12.5 grams at 3 days fermentation time with bioethanol content of 6.154%.
Abstract:Abstract: The cattle farming community in Branjang Village, Semarang Regency, faces a primary issue of livestock waste accumulation that has not been optimally managed. This condition results in environmental pollution,…
unpleasant odors, and increased dependency on chemical fertilizers and liquefied petroleum gas (LPG). The main constraints are limited knowledge, skills, and access to waste processing technology. This community service program aims to optimize the utilization of cattle waste as organic fertilizer and alternative energy through the implementation of the Sustainability Techno-Integrated Agrofarm model. The method employed involves a participatory approach through extension, training, consultation, and the application of the appropriate MetaCow technology as a household-scale biogas digester. Program success was evaluated using pre-test and post-test instruments, analyzed by n-gain and paired sample t-test to assess improvements in participants’ knowledge and skills. The results demonstrate a significant enhancement in the community’s ability to process waste into economically valuable organic fertilizer and biogas, while also strengthening the institutional capacity of Sanggar Tani as a center for sustainable agricultural technology learning. This program contributes to the achievement of the Sustainable Development Goals (SDGs), particularly in clean energy, sustainable production, and environmental preservation.
Keywords: biogas; digester; livestock waste; organic fertilizer; sustainable agriculture
Abstrak: Masyarakat peternak sapi di Desa Branjang, Kabupaten Semarang menghadapi permasalahan utama yakni penumpukan limbah ternak yang belum dikelola secara optimal. Hal ini berdampak pada pencemaran lingkungan, munculnya bau tidak sedap, serta meningkatnya ketergantungan akan pupuk kimia serta gas elpiji. Kendala atama adalah karena keterbatasan pengetahuan, keterampilan, serta akses terhadap teknologi pengolahan limbah. Program pengabdian masyarakat ini bertujuan mengoptimalkan pemanfaatan limbah ternak sapi sebagai pupuk organik dan energi alternatif melalui penerapan model Sustainability Techno-Integrated Agrofarm. Metode yang digunakan adalah pendekatan partisipatif melalui penyuluhan, pelatihan, konsultasi, dan penerapan teknologi tepat guna MetaCow sebagai digester biogas rumah tangga, serta evaluasi keberhasilan melalui pre-test dan post-test yang dianalisis melalui uji n-gain dan paired sample t-test untuk menilai peningkatan tingkat pemahaman serta keterampilan peserta. Hasil kegiatan menunjukkan adanya peningkatan signifikan kemampuan masyarakat dalam mengolah limbah menjadi pupuk organik dan biogas yang bernilai ekonomis serta memperkuat kelembagaan Sanggar Tani sebagai pusat pembelajaran teknologi pertanian berkelanjutan. Program ini berkontribusi pada tercapainya tujuan pembangunan berkelanjutan (SDGs) khususnya energi bersih, produksi berkelanjutan, dan pelestarian lingkungan.
Kata kunci: biogas; digester; limbah ternak; pupuk organik; pertanian berkelanjutan
Abstract:Kutai Kartanegara Regency, East Kalimantan Province, has long depended on coal mining and petroleum as its primary economic drivers. This dependence creates structural vulnerability to global commodity price fluctuations…
and long-term sustainability challenges. This article presents a systematic literature review examining tourism as an alternative sector for regional economic transformation in Kutai Kartanegara. Drawing on 15 peer-reviewed studies from 2016–2024, the review synthesizes evidence on: (1) the role of tourism-led growth and its multiplier effects on local economies; (2) community-based tourism (CBT) as an inclusive development model; (3) structural transformation theory as a framework for economic diversification; and (4) the specific potentials and constraints facing tourism development in resource-dependent regions. The review finds that tourism exhibits significant forward and backward economic linkages, stimulates SME growth and creative economy, and can meaningfully reduce reliance on extractive industries. Key barriers include infrastructure gaps, limited human resource capacity, and suboptimal governance coordination. The findings provide a theoretical and empirical foundation for the ongoing field research into tourism's transformative role in Kutai Kartanegara's regional economy.
Abstract:This study discusses a peanut shelling machine driven by a gasoline-engineered motor . In Indonesia, many processed peanut products require peanuts as a component, such as salted peanuts, peanut oil, peanut paste, peanut…
tofu, and others. Manual peanut shelling is usually inefficient and time-consuming. Therefore, with this machine, which can automatically peel peanuts, it will greatly help save time and increase production capacity. Based on planning calculations for the planned components, the following data was obtained: Gasoline engine used = 5.5 Hp , Pad = 6005 , Belt length to peeler = 65 inches , Belt length to blower = 25 inches , Diameter pulley blower = 4 inches , Pulley diameter peeler = 11 inches , Diameter pulley driver = 2 inches . After analyzing the production/manufacturing costs of this machine, the price for manufacturing 1 peanut peeling machine was Rp4,019,372.24 .
Abstract:Increased productivity in SMEs in terms of quality service delivery is crucial for economic growth and development. Most SMEs are bedevilled with destructive workplace deviant behaviour, particularly the incivility of owners/managers…
ners/managers and employees towards customers, which have different consequences for workplace performance parameters such as a decline in sales, low patronage, and by extension, weak gross domestic product contribution. Using the social exchange theory, this cross-sectional study examined the influence of workplace incivility on productivity among 365 owners/managers, supervisors, and employees of SMEs in the liquefied petroleum gas sub-sector in Lagos State. Stratified proportionate sampling was utilized to select the respondents. The outcomes revealed that workplace incivility in the form of rudeness, discourteous disposition, and derogatory remarks predicted productivity in terms of an interaction between customers and employees and the capacity of the service process. Also, our findings accentuated the essence of avoiding direct and indirect costs that are linked with workplace incivility. The study recommended the communal and positive interpersonal relationships between owners/managers, employees, and customers and suggested training on emotional intelligence as a panacea for behavioral responses.
Abstract:Liquified Petroleum Gas (LPG) merupakan kebutuhan rumah tangga yang saat ini paling banyak dimanfaatkan oleh masyarakat sebagai bahan bakar selain minyak bumi. Apabila gas LPG mengalami kebocoran tidak dapat dideteksi apabila…
abila jarak indra penciuman cukup jauh, sehingga diperlukan sebuah sistem untuk mendeteksi terjadinya kebocoran gas yang dapat menyebabkan kebakaran melalui jarak jauh. Penelitian ini bertujuan untuk mendeteksi terjadinya kebocoran gas dan kebakaran yang dapat memberikan informasi kepada pengguna melalui pesan ke aplikasi Telegram. Metode penelitian yang digunakan adalah prototype. Hasil penelitian ini mampu merancang sistem untuk mendeteksi adanya kebocoran gas dan kebakaran menggunakan NodeMCU ESP8266 berbasis IoT, dimana alat ini dapat memberikan tanda peringatan berupa nyala lampu LED, suara alarm dari buzzer, menampilkan keadaan melalui LCD, dan menerima notifikasi peringatan ke Telegram.