Potensi produksi pertambangan emas di Indonesia termasuk dalam kategori cukup besar dengan produksi rata-rata 113.720,4423 kg/tahun. Penggunaan merkuri pada proses pengolahan emas berpotensi menyebabkan terjadinya masalah kesehatan seperti keracunan merkuri. Tujuan penelitian ini adalah menganalisis faktor risiko akumulasi merkuri pada rambut pekerja penambangan emas tanpa izin (PETI) di Desa Cisarua, Nanggung, Bogor tahun 2013. Penelitian ini adalah penelitian kuantitatif dengan pendekatan potong lintang. Populasi penelitian ini adalah seluruh pekerja PETI Desa Cisarua. Sampel diambil menggunakan teknik accidental sampling sebanyak 40 pekerja. Data dikumpulkan melalui wawancara dan pengamatan. Pengukuran konsentrasi merkuri dalam rambut pekerja menggunakan AAS FIMS dengan Reverence Recovery Material 100%. Variabel bebas pada penelitian ini adalah umur, masa kerja, jam kerja dan konsumsi ikan dengan variabel terikatnya adalah akumulasi logam merkuri pada rambut pekerja. Hasil penelitian menunjukkan bahwa rata-rata akumulasi logam merkuri dalam rambut pekerja antara 2,03 sampai 9,04 ppm atau terdapat 24 orang (60%) mengalami keracunan merkuri lebih dari 2 ppm. Faktor masa kerja (nilai p = 0,000) memiliki korelasi dengan akumulasi logam merkuri pada sampel rambut pekerja yang menunjukan korelasi positif dengan kekuatan sedang (r = 0,552). Hasil analisis multivariat dijelaskan dalam model (akumulasi logam merkuri = -0,315 + 0,896*masa kerja) dengan variabel Adjusted R Square masa kerja sebesar 52,6%.Indonesia has a quite large potential production of gold mining with average production 113.720,4423 kg/year. Gold mining production by mercury could cause health problems, such as mercury poisoning. The purpose of this study was to analyze the risk factor of mercury accumulation in hair samples from illegal gold mining (IGM) workers in Cisarua, Nanggung, Bogor in 2013. This research was a quantitative study by cross sectional approach. The population in this research were all illegal mining workers in Cisarua. The samples were taken using accidental sampling technique with a number of 40 workers and collected by interviews and observation. The measurement of mercury levels in workers hair counted with AAS FIMS by Reverence Recovery Material 100%. The independent variables in this study were age, working period, hours of work and consumption of fish. Meanwhile, the dependent variable was the accumulation of mercury in workers hair samples. The results showed that the average accumulation of mercury in hair samples counted between 2,03 to 9,04 ppm. There are 24 people (60%) suffered mercury poisoning more than 2 ppm. The working period factor (p value = 0.000) correlated with the accumulation of mercury in hair samples of IGM workers. It had a positive correlation with moderate strength (r = 0.552). Multivariate analysis described the model (Accumulation of Mercury = -0.315 + 0.896*working period) with Adjusted R Square 52.6%.

AbstrakSektor pertanian Indonesia seharusnya memperoleh dampak positif dari ASEAN-China Free Trade Agreement (ACFTA). Namun demikian, kinerja sektor pertanian belum menunjukkan peningkatan yang berarti ketika sebagian besar komoditas pertanian telah diturunkan tarifnya melalui tahapan ACFTA. Studi ini meneliti dampak ACFTA terhadap kinerja sektor pertanian Indonesia sebelum dan sesudah ACFTA dengan menggunakan deskriptif analisis. Studi ini juga memprediksi kinerja perekonomian dan kinerja sektor pertanian setelah ACFTA diberlakukan secara penuh menggunakan metode ekonometrik dengan persamaan simultan. Hasil studi ini menunjukkan bahwa kinerja sektor pertanian Indonesia tidak lebih baik dibandingkan dengan sebelum implementasi ACFTA, dan diprediksi akan lebih buruk lagi setelah ACFTA diberlakukan sepenuhnya, akibat dari tingginya tekanan kompetisi dan kekakuan produsen domestik. Peningkatan kualitas infrastruktur domestik, pengembangan riset/teknologi serta penerapan regulasi yang mendukung daya saing merupakan kebijakan yang sangat diperlukan.

Numerous studies have constructed financial inclusion indexes for Indonesia, using amultidimensional approach. However, there is a problem with the methodology, whichassumes that all the dimensions play the same role in defining financial inclusion,since they are based on equal weighting criteria. This paper aims to obviate concernswith the methodology by developing a more empirically based index, namely, aweighted multidimensional index of financial inclusion based on two-stage principalcomponent analysis. In other words, we endogenize the weights. We find that usage isthe most important dimension in defining financial inclusion in Indonesia, followedby availability and access.

Abstract. Nasrudin, Kurniasih B. 2021. The agro-physiological characteristics of three rice varieties affected by water depth in the coastal agricultural land of Yogyakarta, Indonesia. Biodiversitas 22: 3656-3662. Coastal agricultural land has many obstacles of abiotic stress for plant cultivation, including waterlogging, strong wind, and high salt concentration. Therefore, the use of adaptive rice varieties, as well as good land management, are expected to be a solution for rice cultivation in the coastal agricultural land. The objective of this study was to examine the agro-physiological characteristics of three rice varieties planted in coastal agricultural land which were affected by water salinity up to more than 10 dS m-1. This study was conducted from February to July 2017 at Tirtohargo, Bantul District, Special Region of Yogyakarta. The experiment was arranged in a split-plot design, with the depths of sunken-bed as a main plot consisted of 25 cm and 50 cm, and variety as a subplot consisted of IR 64, Inpara 4, and Dendang. The experiment results showed that Dendang had the highest growth and yield in coastal agricultural land compared to Inpara 4 and IR64. The highest value is indicated in plant height, leaf area, proline content, and productivity. The depths 50 cm of sunken-bed increased leaf area and proline content, whereas the depths of 25 cm sunken-bed increased productivity. Dendang showed better agro-physiological activity and had the highest productivity. The depths of 50 cm increased several parameters in agro-physiological characteristics, however, the depths of 25 cm increased grain yield. Among the varieties tested, in salinity, the highest growth and yield variables were shown by Dendang, followed by IR 64 and Inpara 4.

Methylene blue (MB) is a dye in wastewater from textile industries that pollutes the water environment. Reduction of its content is necessary for protecting humans and the surrounding environment. This study fabricated chitosan/Fe3O4 nanocomposite through the mixture of chitosan from crab shell waste and magnetite (Fe3O4) from local sand iron with sodium tripolyphosphate (STPP)-sulfate crosslinker as an adsorbent to reduce methylene blue content. The obtained composite was characterized by Fourier Transform Infrared (FTIR) Spectrophotometer and X-Ray Diffraction (XRD) instrument. The contents of methylene blue before and after applying adsorbent-based nanocomposite were determined using an ultraviolet-visible (UV-Vis) spectrophotometer. FTIR characterization results show that chitosan and chitosan/Fe3O4 nanocomposite had successfully synthesized based on the typical vibrational peaks. The deacetylation degree of chitosan was 69.79%. Fe3O4, and chitosan/Fe3O4 nanocomposite, were confirmed by XRD patterns. The chitosan/Fe3O4 nanocomposite adsorption capacity reached 45.37 mg/g when adsorption occurred with 20 mg adsorbent, pH 9, and contact time of 1.5 h. Hence, the chitosan/Fe3O4 nanocomposite in this study has potency and is applicable to adsorb MB effectively.