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: Identifikasi dan Penilaian Bahaya Keselamatan Kerja pada Simpul Logistik Sumber Ternak Sapi Pedaging
Abstrak: Keselamatan kerja merupakan sarana pencegahan terjadinya kecelakaan kerja yang dapat menimbulkan kerugian seperti cedera, cacat, kerusakan alat mesin dan kerusakan lingkungan secara luas. Penelitian ini bertujuan mengidentifikasi dan menilai bahaya keselamatan kerja pada industri peternakan seperti pasar hewan, kandang penampungan, dan feedlot. Metode yang digunakan adalah HIRARC (Hazard Identification Risk Assesment and Risk Control), penelitian diawali dengan mengindentifikasi bahaya yang terjadi, kemudian dilakukan penilaian risiko, dan terakhir melakukan pengendalian risiko untuk meminimalisir bahaya yang mungkin terjadi. Penelitian dilakukan wawancara dengan salah satu pekerja pada masing-masing lokasi penelitian dan observasi langsung di lapangan. Hasil penelitian identifikasi dan penilaian bahaya secara umum ditemukan beberapa risiko tinggi seperti bahaya tergelincir, tertanduk, dan cedera otot. Selain itu tingkat pengetahuan pekerja mengenai keselamatan kerja masih dibawah 85% dan belum diterapkan dengan baik. Hal ini disebabkan karena fasilitas yang kurang memadai dan rendahnya kepedulian pekerja terhadap keselamatan diri mereka terhadap bahaya pekerjaan yang dilakukan., Occupational safety is a means of preventing work accidents that can cause losses such as injuries, defects, damage to machine tools, and damage to the environment. This study aims to identify and assess occupational safety hazards in the livestock industry, such as animal markets, holding pens, and feedlots. HIRARC (Hazard Identification Risk Assessment and Risk Control) is the method used. The research begins with identifying the hazards that occur, then conducting a risk assessment, and finally carrying out risk control to minimize the hazards that occur. The research was conducted by interviewing one of the workers at each research location and direct observation in the field. Hazard identification and assessment research results generally found several high risks, such as the danger of slipping, goosebumps, and muscle injuries. In addition, the level of knowledge of workers regarding work safety is still below 85% and needs to be implemented properly. This problem is caused by inadequate facilities and low awareness of workers for safety against the hazards of the work being carried out.
Keyword: HIRARC, occupational hazard, occupational safety, bahaya kerja, keselamatan kerja

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