Judul: Analisis spasial kabupaten agam dalam kaitannya dengan kesenjangan pembangunan antar wilayah
Abstrak: Kabupaten Agam sebagai salah satu kabupaten di Provinsi Sumatera Barat secara geografis terletak antara 000 01’ 34” s/d 000 28’ 43” Lintang Selatan dan 990 46’ 39” s/d 1000 32’ 50” Bujur Timur dengan luas wilayah 2 212.19 km2 yang berarti hanya 5.26 persen dari luas Provinsi Sumatera Barat yang mencapai 43 229.04 km2. Terbagi atas empat wilayah berdasarkan topografinya yaitu: 1) wilayah datar dengan kemiringan 00 - 30 dengan luas 662 Km2; 2) wilayah datar berombak dengan kemiringan 30 - 80 dengan luas 153 Km2; 3) wilayah berombak dan bergelombang dengan kemiringan 80 - 150 dengan luas 801 Km2; dan 4) wilayah bukit bergunung dengan kemiringan 150 lebih dengan luas 616 Km2. Terbagi tiga wilayah atas penggunaan lahan existing, meliputi:1) Agam Barat, wilayah perkebunan; 2) Agam Tengah, wilayah kehutanan; dan 3) Agam Timur, wilayah pertanian. Sedangkan berdasarkan aksesibilitas dan orientasi pergerakan dibagi dua wilayah: 1) barat didominasi pergerakan antar kabupaten dan lokal, dan 2) timur didominasi pergerakan antar propinsi dengan orientasi Padang- Bukittinngi-Riau.
Keyword: 

Judul: Analisis spasial disparitas pembangunan antar wilayah di provinsi Sumatera Barat
Abstrak: The phenomenon of disparity areas have become commonplace in the development of an area for various reasons. Development of region in the province of West Sumatra by naked eye there is a disparity in the region indicated. The objectives of this research are 1) determine the amount of disparity in development between regions, 2) identify the sectors held by each district / city; 3) determine the level of development and regional characteristics; 4) analyze the factors that cause disparities in development among regions; 5) to formulate strategies to address the problem of regional development disparities. Analytical methods used are Williamsons Index, Theill Index, Location Quotient Index, Shift Share Analysis, Scalogram Method, Entropy Index, Physical Analysis, Klassen Typology, Factor Analysis, Multiple Regression, and SWOT analysis. The analysis showed there are gaps in the province of West Sumatra which occurs predominantly among areas within the territory of the border region. Dominant sector in the district are agriculture, while in urban areas is service sector. The main factor that caused the region is an indicator of economic inequality and population indicators. The strategies that can be used to overcome the inequality are in development of other sectors of the economy of the agricultural sector and the optimization of the center point of growth and service center region.
Keyword: 

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