Judul: Pengembangan Model Bisnis Produk Dadih Susu Sapi
Abstrak: Dadih is milk fermented product which reputed as one of each traditional healthy food from Indonesia that use milk and lactic acid bacteria as the main raw material. Based on the research that actual production fermented milk product in Indonesia was increased from year to year. Customer development could be one of the solution to know and fulfil customer needs taht use iteration concept until get the best decision. Business model canvas was a tool to combine and choose an idea to get the new concept dadih product. The last decision from iteration that had been done with a repetition would change dadih concept from founders mind became a product that got customer acceptance. Production cost calculation with 200 litre a day scale was got Rp. 6.000,- for the selling price. In investation criteria analiysis, dadih cow milk business project had passed and suitable because NPV and Net B/C value was more than one and IRR more than bank interest. From customer discovery step in customer validation for business model development was changed in channel, value proposition, customer relationship, and customer segment.
Keyword: validated business model., dadih, customer acceptance, cow milk, business model canvas

Judul: Dadih Business Development Strategy as West Sumatran Functional Food (Case Study Dadih Nagari Gadut)
Abstrak: Angka permintaan dadih terus mengalami penurunan, padahal dadih memiliki potensi pengembangan produk dan permintaan pangan fungsional diproyeksikan akan terus meningkat hingga tahun 2025. Penelitian ini bertujuan untuk mengetahui model bisnis dadih saat ini, mengidentifikasi permasalahan konsumen dadih, serta menyusun model bisnis dadih. Pengumpulan data dilakukan pada bulan Maret hingga Juli 2021 dengan menggunakan konsep pemikiran desain. Data primer diperoleh dari seorang produsen dadih di Nagari Gadut dan 20 orang konsumen dadih. Hasil penelitian menunjukkan model bisnis awal usaha dadih masih sangat sederhana. Permasalahan utama yang dirasakan oleh konsumen adalah kegiatan promosi yang kurang, lokasi penjualan yang susah dijangkau, rasa dadih yang asam dan tidak konsisten, aroma amis pada dadih, serta kemasan dadih yang tidak praktis dan tidak informatif. Penelitian menghasilkan prototype yang dapat dijadikan acuan perbaikan produk dan kanvas model bisnis akhir dinilai dapat diimplementasikan., The demand for dadih continues to decline, even though dadih has the potential for product development and demand for functional food is projected to continue to increase until 2025. This study aims to determine the current dadih business model, identify dadih consumer problems, and develop a dadih business model. Data collection was carried out from March to July 2021 using the concept of design thinking. Primary data were obtained from a dadih producer in Nagari Gadut and 20 dadih consumers. The results showed that the initial business model of the dadih business was still very simple. The main problems felt by consumers were lack of promotional activities, hard to reach sales locations, sour and inconsistent dadih taste, fishy dadih smell, as well as impractical and uninformative dadih packaging. This study developed a prototype that could be used as a reference for product improvement and the final business model canvas was considered implementable.
Keyword: business model canvas, design thinking, product development

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