Judul: Analisis Karakteristik Wilayah untuk Memahami Perubahan Penggunaan Lahan di Kecamatan Panimbang, Pandeglang
Abstrak: Pengembangan Kawasan Ekonomi Khusus (KEK) Tanjung Lesung diduga sebagai pemicu terjadinya perubahan penggunaan lahan di Kecamatan Panimbang. Hal tersebut dikhawatirkan akan mengganggu luasan lahan pertanian di Kecamatan Panimbang. Penelitian ini bertujuan untuk mengidentifikasi perubahan sebaran penutupan lahan/penggunaan lahan periode 2002-2020, mengidentifikasi luas perubahan penggunaan lahan periode 2012-2020 dan menganalisis pengaruh karakteristik wilayah terhadap penggunaan lahan di Kecamatan Panimbang. Hasil analisis menunjukkan bahwa karakteristik wilayah mempengaruhi perubahan penggunaan lahan di Kecamatan Panimbang. Tegalan merupakan penggunaan lahan yang paling banyak mengalami perubahan dengan penurunan luasan sebesar 4793 ha, sekitar 48% luas total Kecamatan Panimbang. Di bagian timur, terjadi perubahan tegalan menjadi permukiman. Hal tersebut berkaitan dengan nilai tanah, karena lokasinya yang berada di sekitar jalan dan dekat dengan pasar. Selain itu terjadi perubahan tegalan menjadi sawah yang dipengaruhi adanya irigasi, dengan luas sebesar 2385 ha (24%). Sedangkan di bagian barat, terjadi perubahan tegalan menjadi semak belukar dengan luas sebesar 893 ha (9%). Semak belukar banyak dikuasai oleh warga luar dicerminkan dari status tanah yang banyak belum terdaftar. Hal tersebut dikarenakan nilai tanah yang masih rendah (Rp. <1000020000/m2), meskipun lokasinya dekat dengan KEK Tanjung Lesung. Semak belukar tersebut berada di kawasan perkebunan berdasarkan Rencana Tata Ruang Wilayah (RTRW), sehingga masuk kedalam kawasan transisi., The development of the Tanjung Lesung Special Economic Zone (SEZ) is suspected to be the trigger for land use changes in Panimbang District. It is feared that it will disrupt the area of agricultural land in Panimbang District. This study aims to identify changes in the distribution of land cover/land use for the period 2002-2020, identify land change area of land use for the period 2012-2020 and analyze the influence of regional characteristics on land use in the District of Panimbang. The results of the analysis show that the regional characteristics affect land use changes in Panimbang District. Dry land farm is the land use that has changed the most with a decrease in area of 4793 ha, about 48% of the total area of Panimbang District. In the east, there is a change in the dry land farm to make use of it. This is related to the value of the land, because of its location near the road and close to the market. In addition, there was a change from the dry land farm to paddy fields which was influenced by irrigation, with an area of 2385 ha (24%). Meanwhile, in the western part, the dry land farm was changed into shrubs with an area of 893 ha (9%). Many of the shrubs are controlled by outsiders, which is reflected in the land status which has not been recorded. This is because the land value is still low (Rp. <10000-20000/m2), although the location is close to the Tanjung Lesung SEZ. The shrubs are located in the plantation area based on the Regional Spatial Plan (RTRW), so they are included in the transition area.
Keyword: Land Value, Land Use Change, RTRW, Land Status

Judul: The Impact of Regional Development on the  Conversion of Agricultural Land in Bukateja District, Purbalingga.
Abstrak: Kecamatan Bukateja merupakan kawasan strategis dengan topografi datar dan aksesibilitas yang baik. Alih fungsi lahan yang terjadi merupakan dampak dari pembangunan kawasan industri. Pemerintah menetapkan kawasan peruntukan industri di 5 desa di Kecamatan Bukateja dalam Rencana Tata Ruang Wilayah Kabupaten Purbalingga tahun 2011 – 2031. Penelitian ini bertujuan mengidentifikasi perubahan luasan dan sebaran penggunaan lahan serta keselarasannya dengan RTRW dan mengidentifikasi pengaruh nilai tanah terhadap penggunaan lahan di Kecamatan Bukateja. Penelitian ini dilaksanakan pada bulan Juli sampai November 2022. Obyek penelitian adalah penggunaan lahan yang di alih fungsikan menjadi lahan non pertanian yang ada di Kecamatan Bukateja. Hasil penelitian menunjukkan bahwa perubahan penggunaan lahan yang mengalami penurunan luas terjadi pada ladang sebesar 176.28 ha, sawah irigasi 85.15 ha dan kebun sebesar 58.27 ha. Berbanding terbalik dengan penambahan luas yang terjadi pada pemukiman sebesar 253.92 ha. Perubahan penggunaan lahan ini banyak terjadi di Desa Bukateja, Desa Bajong dan Desa Wirasaba karena terdapat pasar, terminal, industri dan bandar udara. Perubahan penggunaan lahan yang terjadi berkaitan dengan nilai tanah. Nilai tanah di sekitar pasar dan terminal pada Desa Bukateja mempunyai nilai tanah tertinggi yaitu > Rp. 350.000, karena berada pada pusat pemerintahan Kecamatan Bukateja serta terletak pada jalan kolektor utama. Kata kunci: industri, Kecamatan Bukateja, nilai tanah, perubahan penggunaan lahan, Bukateja District is a strategic area with a flat topography and good accessibility. The land use change that occurs is the impact of the development of industrial estates. The government has designated industrial areas in 5 villages in Bukateja District in the Purbalingga Regency Spatial Plan for 2011 - 2031. This study aims to identify changes in the area and distribution of land use as well as their alignment with and identify the effect of land price on land use in Bukateja District. This research was conducted from July to November 2022. The object of research is the use of land that has been converted into non-agricultural land in Bukateja District. The results showed that the decrease in area occurred in fields of 176.28 ha, irrigated rice fields of 85.15 ha and gardens of 58.27 ha. Inversely proportional to the addition of area that occurred in of 253.92 ha. Changes in land use often occur in Bukateja Village, Bajong Village and Wirasaba Village because there are markets, terminals, industries and airports. Changes in land use that occur are related to land values. The land value around the traditional market and bus station in Bukateja have the highest land value (up to Rp. 350.000), because it is in the administrative center of Bukateja District and is located on the main collector road. Keywords: industry,Bukateja District, land value, land use change
Keyword: industry, Bukateja District, land value, land use change

Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
Keyword: