Judul: Analisis Risiko pad Aktivitas Proses Penanganan Kerang Simping
Abstrak: Cold storage merupakan tempat yang biasa digunakan untuk penyimpanan barang sementara, terutama barang yang mudah busuk dan akan digunakan dalam jangka panjang. Pemanfaatan sistem refrigerasi pada cold storage menjadikan ruangan di area cold storage memiliki suhu yang rendah. Paparan suhu dingin yang dirasakan oleh para pekerja setiap hari, lama kelamaan akan mengakibatkan perubahan fisiologi, respon. kejiwaan, serta reaksi pelaku. Kondisi ini disebut dengan efek cold stress. Pekerja yang merasakan efek cold stress dapat meningkatkan potensi kecelakaan kerja. Sehingga, perlu adanya analisis risiko untuk dapat meminimalisir terjadinya kecelakaan kerja. Penelitian ini dilakukan dengan tujuan untuk mengetahui sumber bahaya dan risiko kecelakaan kerja yang terjadi di area cold storage. Metode yang digunakan adalah studi kasus dengan objek penelitian aktivitas proses penanganan kerang simping. Metode pengumpulan data yang digunakan adalah metode observasi langsung dan wawancara, kemudian dianalisis dengan metode HTA (Hierarchy Task Analysis), IBPR (Identifikasi Bahaya dan Penilaian Risiko), dan Analisis deskriptif. Hasil penelitian ini berupa informasi mengenai sumber bahaya dan nilai risiko kecelakaan kerja pada aktivitas proses penanganan kerang simping dalam bentuk bagan HTA dan juga Tabel IBPR. Berdasarkan data tersebut didapatkanlah persebaran tingkat risiko dan cara pengendalian potensi bahaya yang terjadi pada aktivitas proses penanganan kerang simping.
Keyword: cold storage, hazard identification and risk assessment, hierarchy task analysis, occupational safety, scallop

Judul: Risk Assessment of Occupational Safety in  Worker Activities at PT Perikanan Indonesia's, Jakarta Cold storage.
Abstrak: Salah satu peraturan yang perlu dimiliki oleh setiap perusahaan dalam mendukung terlaksananya keselamatan kerja adalah standard operational procedure (SOP). Berdasarkan hasil pra-penelitian di cold storage 2000 ton milik Direktorat Jenderal Penguatan Daya Saing yang dikelola PT Perikanan Indonesia tidak memiliki SOP. Cold storage merupakan salah satu area kerja dengan kondisi yang ekstrem. Tidak adanya SOP di cold storage 2000 ton mengakibatkan peluang terjadinya terjadinya kecelakaan dan penyakit akibat kerja semakin besar. Penelitian ini bertujuan untuk mengidentifikasi aktivitas dan menilai sumber potensi bahaya serta menghitung tingkat risiko kecelakaan dan penyakit akibat kerja pada aktivitas pekerja di cold storage 2000 ton. Metode yang digunakan dalam penelitian ini adalah analisis deskriptif untuk menggambarkan kondisi aktivitas di lokasi penelitian dan menggunakan pendekatan formal safety assessment untuk melakukan penilaian sumber potensi bahaya serta penilaian risiko kecelakaan dan penyakit akibat kerja. Hasil penelitian ini berupa informasi mengenai sumber potensi bahaya dan pengelompokkan risiko kecelakaan dan penyakit akibat kerja. Suhu area kerja merupakan salah satu contoh sumber potensi bahaya yang menimbulkan dampak terparah yaitu memicu munculnya kecelakaan dan penyakit akibat kerja. Terdapat 35 aktivitas yang dilakukan oleh pekerja di cold storage, dimana 18 aktivitas dengan kategori risiko sedang, 8 aktivitas kategori tinggi, dan 3 aktivitas kategori sangat tinggi. Informasi tersebut dapat digunakan dalam membantu penyusunan SOP untuk cold storage 2000 ton., One crucial regulation that every company needed to possess to support the implementation of workplace safety was the Standard Operational Procedure (SOP). Based on the pre-research findings at the 2000-ton cold storage owned by the Directorate General of Strengthening the Competitiveness managed by PT Perikanan Indonesia, there had been an absence of SOP. Cold storage represented a workplace area with extreme conditions. The lack of SOP in the 2000-ton cold storage had increased the likelihood of accidents and work-related illnesses. The research aimed to identify activities, assess potential sources of hazards, and calculate the level of risk of accidents and work-related illnesses among workers in the 2000-ton cold storage. The method employed in that research had involved descriptive analysis to depict the activity conditions at the research site and had employed a formal safety assessment approach to evaluate potential sources of hazards and assess the risk of accidents and work-related illnesses. The research findings had provided information about potential sources of hazards and had categorized the risks of accidents and work-related illnesses. The workplace temperature had been identified as one critical source of hazards that could trigger severe accidents and work-related illnesses. There had been 35 activities carried out by workers in the cold storage, where 18 activities had been categorized as having moderate risk, 8 activities as high risk, and 3 activities as very high risk. This information could be utilized to aid in the formulation of SOPs for the 2000-ton cold storage.
Keyword: workplace accidents, work-related illnesses, cold storage, SOP

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