Judul: Geographic Information System for Occupational Health  and Safety (OHS) Risk Mapping
Abstrak: Kecelakaan dapat terjadi kapan saja, di mana saja, dan kepada siapa saja. Namun, risiko tersebut dapat diminalisir dengan penerapan program keselamatan dan kerja. Keselamatan dan kesehatan kerja (K3) menjadi suatu hal yang wajib dipenuhi oleh setiap perusahaan. Sistem Informasi Geografis (SIG) dapat menjadi perangkat yang sangat membantu dalam perencanaan dan pembuatan kebijakan terkait K3. SIG digunakan untuk memetakan dan memvisualisasikan risiko kecelakaan dan penyakit, mengidentifikasi penyebaran penyakit, serta melakukan pemantauan dan pencegahan kecelakaan dan penyakit. PT Nayotta Kelola Laut Indonesia merupakan perusahaan agroindustri yang bergerak pada bidang perkebunan, perhutanan, dan secara terkhusus perikanan. Perusahaan ini memiliki area kerja yang cukup luas dengan karakteristik lingkungan kerja yang berbeda di kawasan-kawasan tertentu. Penelitian ini merancang SIG untuk pemetaan risiko K3 di PT Nayotta Kelola Laut Indonesia. Metode yang digunakan pada penelitian ini adalah Hazard Identification and Risk Analysis (HIRA) dan analisis semi kualitatif. Hasil penelitian menyajikan analisis risiko kerja yang diimplementasikan ke dalam SIG, yang memberikan informasi lokasi-lokasi potensi bahaya dari aktivitas kerja beserta tingkat risikonya.
Keyword: hazard identification and risk analysis, keselamatan dan kesehatan  kerja, sistem informasi geografis

Judul: Analisis Keselamatan dan Kesehatan Kerja (K3) Pada Industri Pengolahan Teh (Studi Kasus Pada Bagian Produksi PT. Sinar Inesco, Tasikmalaya)
Abstrak: The problems in Occupational Safety and Health frequently still are ignored. This matter is shown with the number of work accident remain high. Based on data recorded in PT. Jamsostek, there were 83,714 work accident cases in Indonesia within year 2007. This number includes 6,506 handicaps, and 1.883 deaths. Agriculture is one of the most hazardous occupations in worldwide. In several countries the fatal accident rate in agriculture is two times higher than the average for all other industries. PT. Sinar Inesco as one of agro industry has quite intense activity involving labors, appliance, method, expense, and the material and also full time daily work. That condition owns the possibility of the happening of risk or hazard even accident in activity execution. This research was aimed to study potential hazard in working environment, to know the risk level in each hazard, and to identify the factors dealing with Occupational Safety and Health. Risk assessment used qualitative analysis which generally known as 2D model, where risk level was calculated from multiplication of Likelihood with Consequence which was reconciled with matrix table of risk analysis 2D model. Risk level showed by the matrix was then used define control techniques in accordance with literature and condition of location. Identification resulted that hazards at production activity of tea processing were classified into 4 units e.g. pre-withering and withering, hulling and fermentation, drying, sorting and packing. Hazards with low risk levels are slumped, incurred by heat from fan, collided by chair monorail, the noise (at pre withering and withering unit), slipped (at hulling and fermentation unit), clamped in drying door (at drying unit), dust breathed by respiration, noise and collided (at sorting and packing unit). Hazard with medium risk level was included scratches (at pre withering and withering unit), fallen down, electricity shocked, noise (at hulling and fermentation unit), hot exposure and slipped (at drying unit), clamped in enchain, eye incurred by dust and electricity shocked (at sorting and packing unit). The last level is high risk. This kind of risk has to be reduced before continuing work. Hazard with high risk level consist of pulled by propeller, and electricity shocked (at pre withering and withering unit), clamped, cut (at hulling and fermentation unit), fallen down, burned, noise (at drying unit) and pulled by propeller (at sorting and packing unit). Observations indicate that the cause of hazard can be grouped into two, that is, unsafe action done by worker and unsafe condition. Unsafe action done because the workers have less knowledge about Occupational Safety and Health. Unsafe condition commonly caused by destroying equipments such as production machines and the working safety equipments Each hazard has different risk levels; therefore, different control techniques are suggested. Control which can be done in general is to frame Standard Operation Procedure (SOP), to use personal protection, display, as well as to repair damaged equipments and machine. Control can be used by all hazards for low, medium and high risk while the extreme risk has to be eliminated.
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Judul: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell