The study deals with the possibility of waste utilization by using briquetting technology (production of solid fuels) and the potential of the manual low-pressure briquetting press in rural and peri-urban areas of East Java, where firewood is still commonly used as a source of energy for heating and cooking (besides LPG). The research compares households from the Donowarih village (Malang regency) and from the Maron peri-urban area (Blitar regency). Through quantitative and qualitative research, we document the potential of briquette production from household waste and agriculture production. The population from the peri-urban area is interested and willing to invest more in the technology, even though a higher biomass production has been found in the rural area. Financial possibilities were similar in both areas (p = 0.8986). A positive correlation (R = 0.5146) was found between the level of education and level of potential investments. Thus, higher education level meant higher interest in technology and the willingness to invest in it. In both areas there is a potential for briquette production and demand for its usage. Nevertheless, further research is recommended to find the suitable composition of bio-briquettes after the installation of wooden manual low-pressure briquetting press.

The article deals with the mystical stream called Kejawen and its current form and impact on the culture and traditions of the Indonesian Java Island. The presented findings are based not only on the study of secondary sources, but also on qualitative field survey. As appropriate methods have been chosen semi-structured interview. Respondents (Javanese) have been asked about knowledge and their relation to the traditional Kejawen. Besides the interview, observation has been chosen method in the case of traditions and rituals. Photographs, individual texts and items related to the topic have been analyzed by document analysis. Although Kejawen is not an officially recognized religion according to Indonesian legislation, its influence is visible until today. Especially in rural areas are still a lot practicing supporters. The influence of Kejawen is connected to life of Javanese deeper than most of them is willing to admit. Nevertheless, mystical tradition has influence on their daily life, decision making, art, traditions and also contemporary mass culture.