Serbuk dari Limbah Cangkang Telur Ayam Ras sebagai Adsorben terhadap Logam Timbal (Pb)

The aim of this study is to determine the optimum time and weight required for eggshell powder when it absorbs Pb, and to determine the adsorption capacity of the eggshell powder at the optimum condition for Pb with the shaking time variation of 10, 20, 30, 40 and 50 minutes. The weight variation of adsorbent is 0.25, 0.50, 0.75, 1 and 1.25 grams. The work steps in this study were production of the eggshell powder as the adsorbent, making of a solution of Pb 60 ppm, and determination the Pb concentration at equilibrium using a spectrophotometer spektrodirect respectively. The results obtained after the adsorption process for the time variation was 30 minutes, this optimum time giving %Pb absorbed was 94.65%. The weight variation of adsorbent is 1 gram, this optimum weight giving %Pb absorbed was 98.91%. Furthermore, the absorption capacity adsorbent of eggshell powder in both optimum conditions was 0.078 mg Pb/mg adsorbent

Tingkat Kematangan Gonad, Faktor Kondisi, Dan Hubungan Panjang-beratikan Tajuk (Aphareus Rutilans Cuvier, 1830) Di Perairan Laut Dalam Palabuhan Ratu, Jawa Barat [the Stage of Gonad Maturity, Ponderal Index, and Iength-weight Relationship of Aphareus Rutilans in Palabuhan Ratu Deep Sea, West Java]

The research was conducted in order to investigate condition factor, length-weight relationship, and reproductive aspect of Aphareus rutilans in Palabuhanratu Sea, Sukabumi, West Java from June 2005 to February 2006. Sample fish was captured by hand line. A total of 151 individuals were taken. The fish samples ranged from 245-830 mm in length. Length-weight relationship showed that fish had negative allometric growth type. Condition factor of male and female varied from 0.88 - 1.13 and 0.89 - 1.19 consecutively. Chi-Square test showed that sex ratio was unbalance. The stage of gonad maturity was found I, II, and IV for males and I - II for females

Lmplementasi Desain Fasilitas Kerja Ergonomis Untuk Menurunkan Resiko Pada Postur Kerja Duduk Statis

A staticwork position with sitting is common work posture founded in industry, particularly small industryin Indonesia. The problem that review in this paper is the activity of workers sitting static for processingemping in Yogyakarta. Activity done by means sitting on the floor without using table. The activity carriedin a continuous long term, so as to cause disease risks muscle and bone especially lower back. Ergonomic workfacilities is implemented to solve the work problem with table and chair. The design of work table is developedwith concept low cost improvement and consider with secure, health, and convenience of worker. The designprocess using participatory approach by involving worker to get best design. The result of facilities implementationcan be achieved a decrease ih the risk of work. The potential risk of work posture can be repair thatshown of the RULA score from 6 to 4, and no more complain the back and waist from worker activity

Social Conflicts Between Oil-Palm Plantation Company and Indigenous People in Jambi Province

The oil-palm plantation development policy meant to increase the economic growth and to provide jobs opportu nities in rural area. The development policy that participate the private sectors creates many social conflict in Indonesia, especially against the indigenous people community. The purpose of this research is to fid out, how the oil-palm plantation development policies implemented and the impact to the indigenous people community in Batanghari Regency, Jambi Province. This qualitative research used case study approach and qualitative data anal ysis based on extended text. Obtaining data through direct observation, in-depth interview, structured interview, and literature studies.The study results showed that the implementation of the large scale oil-palm plantation development policy, has caused approximately 1/3 area of Batang Hari Regency was controlled by the private companies and give negative impacts to almost 3.000 peoples of SAD Batin 9 community. They have been evicted, marginalized and face the uncertainty rights to the land. The implementation of oil palm plantation development policy without take a no tice to the existing social environmental condition has deny the indigenous people existence. It has stimulated some contradiction to the injustice government policy. Therefore this research recommends the government to consider about the social and environmental impacts before issued any policy in order to protect the social justice for all citizens

Penerapan Ipteks untuk Pengembangan Potensi Limbah Tempurung sebagai Upaya Peningkatan Pendapatan Masyarakat

IMPLEMENTATION OF SCIENCE AND TECHNOLOGY FOR THE DEVELOPMENT OF COCONUT SHELL WASTE AS AN EFFORT TO INCREASE COMMUNITY INCOME. The problems that occur in the community of Sei Paham Village are not yet optimal use of coconut, which is one of the largest coconut production villages in Sei Kepayang District. It requires the acquisition of science and technology in maximizing coconut shell waste into charcoal. The purpose of the service is to implement science and technology in processing coconut shell waste into charcoal as an effort to increase the income of the people of Sei Paham Village. The community empowerment method uses participatory learning and action to be very useful in increasing knowledge and skills by involving community participation in several ways, including: (1) analysis of the situation of potential derivative products from coconut waste; (2) able to design the charcoal combustion devices that have been produced with the service team; and (3) skilled in quality charcoal production. The results of dedication are seen in increasing income and skills in utilizing shell waste. The application of science and technology in developing the potential of shell waste also has a positive impact on the surrounding environment, this is there is no longer a coconut shell buildup because the community has been able to optimize the shell using a coconut shell combustion device to become charcoal