Judul: Process and Lean Manufacturing Analysis of Ready to Eat Curry Sauce Product with Value Stream Mapping Method in PT XYZ
Abstrak: Produktivitas dapat ditingkatkan dengan mengeliminiasi atau meminimalisir pemborosan yang terjadi pada lini produksi. Penelitian ini bertujuan untuk mengidentifikasi aliran dan tahapan proses, mengevaluasi kendala serta pemborosan yang terjadi serta merancang perbaikan pada produksi saus gulai. Value stream mapping adalah tools pada konsep lean manufacturing yang berguna untuk mengetahui aliran informasi dan material serta mengidentifikasi pemborosan yang terjadi pada lini produksi melalui pemetaan. Berdasarkan konsep Toyota Production System (TPS), memborosan teridentifikasi pada lini produksi adalah pergerakan, waktu menunggu dan proses produksi berlebih. Total lead time pada pemetaan sekarang adalah 25621,4 detik. Analisis pada pengembangan peta masa depan menunjukkan penggunaan sumberdaya yang masih kurang optimal sehingga menyebabkan berbagai pemborosan pada lini produksi. Usulan perbaikan pada peta masa depan seperti penerapan 5S, standarisasi tugas serta jumlah pekerja, sistem andon dan proses FiFo. Usulan perbaikan dapat mengurangi lead time menjadi 25018,2 detik., Productivity is described through good use of resources. Productivity can be increased by eliminating or minimizing wastes that occur on the production line. This research is aimed to identify the flow of information and stages of the process, evaluate wastes that occur and design improvement to the production of curry sauce. Value stream mapping is a tool in the lean manufacturing concept that is usefull for knowing the flow of information and materials as well as identifying wastes that occur in the production line through mapping. According to Toyota Production System (TPS) concept, this research has identified several wastes, motion, waiting and extra-processing. Total lead time on the current mapping was 25621,4 seconds. Analysis on the future map showed that used of resources was still less than optimal. The future map suggested implementation of 5s, standardization of tasks and number of workers, andon system and FiFo process.The suggested improvement was able to reduce the lead time to 25018,2 seconds.
Keyword: Eliminasi pemborosan, Lean manufacturing, Produktivitas, Value stream mapping

Judul: Peningkatan Produktivitas dengan Metode Value Stream Mapping di Lini Produksi Kecap AMB 13 mL PT. HAI
Abstrak: Maintaining productivity is a main target to be achieved by the majority of companies in Indonesia, one of it was PT . HAI. The method used could be by implementing lean concept and value stream mapping as a measuring tool. The purpose of this study was to identify the process flow in soy sauce production line, describe the current state map, identify waste and determine the best solution, as well as depict the future state map. Results of Current state mapping depiction showed the resulting values of lead time was 132 732 minutes, while the total value added was obtained by 177 420.141 minutes. Tracing the flow of production generated waste materials in excess expenditure on MSA cooking sugar and soy sauce. The use of Kanban systems and resetting the division of labor forklift operator were selected as the best solutions. The depiction of Future state map showed that there were a decrease of 76% in MSA lead time and 0.37 % in overall lead time
Keyword: future state map, Current state map, Value Stream Mapping

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