Runoff Water in Cocoa Plantation as Affected by Rorak Number and Mulch Type

Soil erosion is a serious problem in the field of ecology and environment. Providing rorak (small blocked ditches) and mulches as an alternative conservation action is expected to minimize water runoff. The purpose of this study was to examine the effects of combination of rorak and mulches in controlling water runoff in a cocoa farm. Location of this research was in Kaliwining Experimental Station, Indonesian Coffee and Cocoa Research Institute during rainy season in early 2015. This research used a nested design in which there is a complete factorial design of random groups that every combination treatment was repeated three times. Each experiment plot consisted of 16 cocoa trees of eight years old. The first factor was rorak treatment consisted of without rorak, 9 rorak per 16 trees (plot) and 16 rorak per 16 trees, whereas the second factor was mulch treatment consisted of control (without mulch), cocoa leaves as mulch and rice straw mixed with cocoa leaves as mulch. Rorak collecting runoff water was made of aluminum with a length of 40 cm, width 30 cm and high 30 cm. Observation of runoff water was carried out early every morning. The results showed that increased number of rorak combined with cocoa leaf and rice straw significantly controlled runoff water compared to control. Rorak and mulch treatments were able to reduce runoff water compared to control. High number of rorak per plot increased the effectiveness in controlling runoff water when it was combined with mulch especially mixture of wide leaf (cocoa leaf) and needleshaped leaf (rice straw). Treatment of 16 rorak in every 16 trees with cocoa leaves and rice straw mulch could reduce runoff water by 82.8% compared to a control

Tunneling Magnetoresistance (TMR) on Fe-Al2O3 Nano Granular Film Growth by Helicon Plasma Sputtering

Fe-Al2O3 nanogranular thin film by helicon plasma sputtering with the variation of Fe content from 0.1 to 0.7 volume fraction have been prepared. The magnetic and magnetoresistance properties were investigated by a Vibrating Sample Magnetometer (VSM) and a Four Point Probe (FPP). The Rutherford BackScattering (RBS) was performed with the SIMNRA software. Conversion Electron Mossbauer Spectroscopy (CEMS) study was also performed to estimate the fraction of Fe and α-Fe2O3 in the granular film. The results suggested that the percolation concentration occured at 0.55 Fe volume fractions, with the maximum Magnetoresistance (MR) ratio of 3%. The present MR ratio that was lower than the previous results may be related to the existence of α-Fe2O3 phase

Tunneling Magnetoresistance (TMR) on Fe-Al2O3 Nano Granular Film Growth by Helicon Plasma Sputtering

Fe-Al2O3 nanogranular thin film by helicon plasma sputtering with the variation of Fe content from 0.1 to 0.7 volume fraction have been prepared. The magnetic and magnetoresistance properties were investigated by a Vibrating Sample Magnetometer (VSM) and a Four Point Probe (FPP). The Rutherford BackScattering (RBS) was performed with the SIMNRA software. Conversion Electron Mossbauer Spectroscopy (CEMS) study was also performed to estimate the fraction of Fe and α-Fe2O3 in the granular film. The results suggested that the percolation concentration occured at 0.55 Fe volume fractions, with the maximum Magnetoresistance (MR) ratio of 3%. The present MR ratio that was lower than the previous results may be related to the existence of α-Fe2O3 phase

Irradiation Effect of Argon Ion on Interfacial Structure Fe(2nm)/Si(tsi=0.5-2 nm) Multilayer thin Film

Investigation includes formation of interfacial structure of Fe(2nm)/Si(tSi= 0.5-2 nm) multilayer thin film and the behavior of antiferromagnetic coupling between Fe layers due to Argon ion irradiation was investigated. [Fe(2nm)/Si]30 multilayers (MLs) with a thickness of Si spacer 0.5 - 2 nanometer were prepared on n-type (100) Si substrate by the helicon plasma sputtering method. Irradiation were performed using 400keV Ar ion to investigate the behavior of magnetic properties of the Fe/Si MLs. The magnetization measurements of Fe/Si MLs after 400keV Ar ion irradiation show the degradation of antiferromagnetic behavior of Fe layers depend on the ion doses. The Magnetoresistance (MR) measurements using by Four Point Probe (FPP) method also confirm that MR ratio decrease after ion irradiation. X-ray diffraction (XRD) patterns indicate that the intensity of a satellite peak induced by a superlattice structure does not change within the range of ion dose. These results imply that the surface of interface structures after ion irradiation become rough although the layer structures are maintained. Therefore, it is considered that the MR properties of Fe/Si MLs also are due to the metallic superlattice structures such as Fe/Cr and Co/Cu MLs.Received: 2 April 2009; Revised: 2 September 2009; Accepted: 5 January 201

Pengelolaan Lingkungan Pada IKM Garam Konsumsi Beryodium Di Kabupaten Rembang

The development of the SME sector, especially industrial activity in addition to contributing to the economic development, has an impact on environmental change. This study aims to develop recommendations environmental management can be applied to industrial consumption of iodized salt by using an approach 1E4R (Elimination, Reduce, Reuse, Recycle, Recovery) as well as the implementation of good house keeping (GHK). The method used in this study is a qualitative method of participant observation. Data collection through measurement, interviews, observation and review of the literature. Based on the research output Not Products arising from the process of production of iodized salt among others: spilled salt, salt broken, scorched salt, blothong rest of the washing process, washing process waste water, air emissions, oil spills of diesel engines and noise. The test results show the parameters effluent TSS and TDS is already beyond the required Quality Standard. Implementation 1E4R in environmental management in SMEs salt, among others; replacement of diesel engine with an electric motor; reuse of raw materials washing liquid salt; blotong and recycle residual water washing method of iodized salt and recrystallized into recovery residual salt around the production machine. Good house keeping can be applied, among others: control the application of SOP, material handling good execution with the use of plastic buckets, accelerate the process of dismantling the salt briquettes after oven processes and the application of the FIFO principle as well as the USAge of appropriate personal protective equipment.Keywords: Iodized salt industry, Exodus Not Products, Environmental Management, Good House KeepingCara sitasi: Nugroho, M.S.E., Purwanto, dan Suherman. (2016). Pengelolaan Lingkungan pada IKM Garam Konsumsi Beryodium di Kabupaten Rembang. Jurnal Ilmu Lingkungan,14(2),88-95, doi:10.14710/jil.14.2.88-9

Analisis Perilaku Wisatawan Tiongkok di Luar Negeri: sebuah Studi Literatur

Seiring dengan perkembangan ekonomi Tiongkok yang sangat pesat, pasar pariwisata luar negeri Tiongkok banyak dilirik sebagai pasar wisata baru yang sangat menjanjikan bagi sejumlah negara, termasuk Indonesia. Perilaku wisatawan dapat digunakan untuk memahami kecenderungan wisatawan dalam memilih dan melakukan pembelian atas produk wisata. Perilaku wisatawan Tiongkok ini berubah seiring dengan kemajuan media sosial. Dengan memahami karakteristik wisatawan Tiongkok yang berbeda dengan wisatawan lainnya, Indonesia dapat merancang produk wisata yang disesuaikan dengan karakteristik wisatawan Tiongkok

Ejaan Latin Bahasa Jawa Memprihatinkan, Mana Jati Diri Orang Jawa?

Keberadaan Bahasa Jawa sebagai jati diri suku Jawa sudah mulai terasa kabur,dengan digalakkanya penggunaan Bahasa Indonesia sebgai Bahasa Pemersatu disamping penggunaan Bahasa Asing yang sangat gencar dipromosikan demimenyikapi MEA. Apakah hal ini akan kita biarkan? Penelitian ini bersifat eksploratifyang bertujuan untuk mengungkap betapa memprihatinkan Ejaan BahasaJawa.Padahal aturan ejaan Bahasa Jawa sudah dibakukan bersamaan dengandibakukannya ejaan Bahasa Indonesia yang disempurnaakan (EYD). Kwesionerdibagikan secara acak pada sekelompok orang yang peneliti asumsikan sebagai orangJawa dengan kisaran usia 20-50 tahun. Sedangkan pengambilan data dilakukan di 3supermarket (mall), yakni Sri Ratu, Pemuda, Java Mall dan Ada Majapahit. Hasilpenelitiaan menunjukkan ketidak pahaman subyek penelitian yang notabene bersukuJawa terhadap Bahasa Jawa dari segi sistem ejaan.Sebagaian besar subyek penelitianmemilih jawaban yang salah pada kata-kata yang ditulis dengan ejaan yang benardan yang salah. Sedangkan sebagian kecil lainnyaberhasil memilih jawaban yangbenar dan ada yang mengatakan tidak tahu dengan memilih pilihan jawaban “tidaktahu”. Hasil penelitian memberikan kontribusi baik secara teoritis maupun praktis.Secara teoritis ejaan Bahasa Jawa perlu lebih menamkan nilai-nilai linguistis,terutama pada para mahasiswa program studi Sastra Jawa. Sedangkan secara praktis,otoritas daerah segera revisi semua slogan-slogan, pengumuman, petunjuk jalan,nama gedung dlsb yang masih menggunakan ejaan yang salah.Apa bila gejala initidak segera ditindak lanjuti secara sistematis dan terstruktur, maka tidak menutupkemungkinan bahwa yang salah akan menjadi benar dan yang benar akan menjadilucu

Uji Aktivitas Antibakteri Fraksi Aktif Ekstrak Daun Senggani (Melastoma Malabathricum L) terhadap Escherichia Coli

Tujuan: Daun Senggani (Melastoma malabathricum L.) merupakan salah satu dari tanaman obat yang dipergunakan untuk mengobati beberapa penyakit, salah satunya diare yang masih menjadi penyakit endemic di Indonesia. Metode: Penelitian eksperimental secara in vitro yang dilakukan di Laboratorium Bersama Pasca Sarjana Universitas Sriwijaya untuk menginvestigasi kemampuan antibakteri dari daun senggani terhadap Escherichia coli ATCC 25922 dibandingkan dengan ciprofloxacin sebagai control positif. Hasil: Fraksi Etil Asetat dan methanol dari daun senggani mempunyai aktivitas antibakteri terhadap Escherichia coli dengan masing-masing nilai Konsentrasi Hambat Minimum pada 250 µg/ml and 1000 µg/ml. Simpulan: Fraksi aktif ekstrak daun senggani mempunyai kemampuan antibakteri terhadap Escherichia coli dalam media agar