Judul: Estimasi Sisa Lauk Hewani, Lauk Nabati, dan Sayuran Konsumen Beberapa Jenis Rumah Makan di Kota Bogor
Abstrak: This study aimed to estimate the waste of animal and plant sources of food, and vegetables among consumers of some type of restaurants in Bogor city. The study was conducted in Padang, Sundanese, Javanese Restaurants, and Tent Stalls. Data collection was conducted in March 2013 until April 2013. A cross-sectional design was implemented in this study. Total respondents were 279 consumers. Sundanese restaurants has a most variation types of plant sources and vegetables waste, and Javanese restaurants has a most variation types of animal sources waste. Gender is known to have tendency to be one the factors causing different leftovers, that female gave more leftover of animal sources, plant sources, and vegetables than male. Loss of nutrients due to waste of animal sources was the most in tent stalls. Loss of nutrients due to waste of plant sources and vegetables was the most in Javanese restaurants. However, generally, loss of nutrients percapita permeal of each foods is not significant, less than one percent of the RDA.
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Judul: Estimasi Nilai Kehilangan Food waste dan Potensi Implementasi Denda Sisa Makanan di Rumah Makan (Studi Kasus : Grand Garden Café & Resto, Kebun Raya Bogor).
Abstrak: Bogor Botanical Garden has the most tourist visits amongst the other nature tourism sites in Bogor City. Most tourists spend almost 40% of their budget on food while traveling, and 50% of restaurant’s income earned from tourists. An eating out habit as a lifestyle has been increasing the volume of food waste while 93% of organic waste in Indonesia comes from food wasted. In this case, it’s hard to avoid food wasting because it’s related with habits but food waste causes environmental and economic loss because of the pollution and waste of resources along the production. Therefore, it needs a food waste prevention to support Zero Waste 2030 program in achieving SDGs number 12. The purposes of this research are (1) to k9ow the perceptions and behaviours of restaurant’s consumers about food waste; (2) to estimate the amount and loss value of food waste generated in resto; (3) to analyse the potential implementation of fines system for consumer’s food waste. The methods used in this research are descriptive analysis using Guttman, Likert, SNI 10-3964-1994, and Contingent Valuation Method. The results of this research show that knowledge about food waste issues and the confession of having food waste prevention in daily life, cannot ensure someone from wasting food. The high amount of loss value of food waste in restaurant (Rp872.338.472/year) shows the waste of resources that cannot be avoided. Thus, a fines system for consumer’s food waste leftovers can be one of the alternative solutions. The fine scheme based on mean WTP of restaurant’s visitors is Rp15.676 to Rp21.360 per 100 grams of food wasted (applies multiples), while for buffet menu is Rp50.000.
Keyword: food waste, loss value, waste of resource, fine of food wasted, willingness to pay

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4