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Pengaruh Konsentrasi NaOH pada Sintesis Nanosilika dari Sinter Silika Mata Air Panas Sentral, Solok Selatan, Sumatera Barat dengan Metode Kopresipitasi Susilo, Hendro; Putra, Ardian; Astuti, Astuti
Jurnal Fisika Unand Vol 5 No 4 (2016)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.5.4.334-338.2016

Abstract

Nanopartikel silika telah disintesis dari sinter silika yang bersumber dari mata air panas Sentral, Solok Selatan, Sumatera Barat menggunakan metode kopresipitasi. Sintesis dilakukan dengan cara merendam sinter silika dengan HCl 10 M selama 12 jam dan direaksikan dengan NaOH 8 M, 9 M dan 10 M. Larutan disaring dan dititrasi dengan HCl 10 M hingga pH mencapai 1, kemudian dicuci dan dikeringkan dengan oven selama 5 jam dengan suhu 100 oC. Dari hasil karakterisasi X-Ray Diffraction (XRD) didapatkan bahwa sampel yang direaksikan dengan NaOH 8 M dan 9 M, menghasilkan fasa kristal dengan ukuran kristal berturut-turut 224 nm dan 138 nm, sedangkan sampel dengan konsentrasi NaOH 10 M memiliki fasa amorf. Berdasarkan hasil karakterisasi Scanning Electron Microscopy (SEM) didapatkan ukuran partikel rata-rata berturut-turut 506 nm, 245 nm, dan 202 nm.Kata kunci : nanopartikel, sinter silika, kristal, XRD, SEM
Realizing Simbatan - Magetan As A Tourist Village: Utopia and Realita Mulyati, Tatik; Rohmatiah, Ahadiati; Haryani, Anik T.; Susilo, Hendro
Jurnal ABDINUS : Jurnal Pengabdian Nusantara Vol 4 No 2 (2021): Volume 4 Nomor 2 Tahun 2021
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/ja.v4i2.14839

Abstract

Simbatan Village in Magetan has nature tourism, historical, cultural tourism, and Dewi Sri's cultural heritage site called Candi Simbatan, but it has not been managed optimally. This village also has quite a lot of people with disabilities with poor socio-economic conditions. In realizing the tourism village, Simbatan has problem, namely: does not master plan yet, food court, pedestrians in tourist locations that were still in the form of land, places for people with disabilities did not exist and their products were splashed batik and marketing collided. Solutions are carried out in stages, namely: making a master plan; improve infrastructure at tourist sites. In line with these efforts, solutions for persons with disabilities are: improvement of workshop shelters; skills training and production of goods as well as assisting with marketing. The aim of this activity is to combine the existing tourism potential with the activities and work of people with disabilities so that their welfare and independence can increase. The integration is carried out gradually and continuously to create a tourist village.
PERENCANAAN DINDING PENAHAN TANAH UNTUK PENGENDALIAN MORFOLOGI TIKUNGAN KALI GEDE DAS SONO KABUPATEN MADIUN Susilo, Hendro; Rendrarini, Diana
Jurnal Teknik Sipil dan Arsitektur Vol 31 No 2 (2026): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v31i2.6377

Abstract

The weir is a vital infrastructure supporting irrigation sustainability by serving as the primary structure for water diversion. Its performance depends heavily on river morphology and channel alignment stability. Morphological changes caused by erosion and sedimentation can alter the river’s course, reducing water diversion effectiveness and decreasing the weir’s capacity to supply irrigation networks. A common phenomenon is the formation of a shortcut channel at river bends, diverting flow away from the weir. This study analyzes channel changes at a bend that reduced weir function and designs a flow control structure to restore the original flow. Conducted at the Kali Gede River in Madiun Regency, where an upstream shortcut diverted the flow, the study employed hydrological analysis to determine design flood discharge using synthetic unit hydrograph methods. Hydraulic analysis via HEC-RAS was performed to obtain flood water elevations. A retaining wall was designed as a flow control structure and evaluated using Geo5 software for stability against overturning, sliding, bearing capacity, and slope stability. HEC-RAS results show that while flood levels remain within sectional capacity, flow tends to bypass through the shortcut. The proposed retaining wall design satisfies all required safety factors for overturning, sliding, and bearing capacity. Thus, constructing a retaining wall to close the shortcut is an effective solution to maintain river morphology and support optimal irrigation weir function.
PENGEMBANGAN KAWASAN WISATA PANTAI TAMAN BERBASIS PARIWISATA BERKELANJUTAN DI KABUPATEN PACITAN Rendrarini, Diana; Susila, Candra Budi; Susilo, Hendro; Minarsih, Susi; Nugroho, Tri Cahyo
Jurnal Teknik Sipil dan Arsitektur Vol 31 No 2 (2026): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v31i2.6531

Abstract

Pantai Taman in Ngadirojo District, Pacitan Regency, possesses significant potential as a sustainable coastal tourism destination with unique geological characteristics in the form of karst cliffs, abrasion platforms, and sea turtle conservation areas. However, this potential has not been optimally managed, as indicated by fluctuating tourist visits and limited supporting facilities. This study aims to formulate a sustainable tourism development concept based on physical, environmental, social, and economic aspects. The research employs a qualitative-descriptive method with spatial and collaborative governance approaches. Data were collected through field observations, in-depth interviews with stakeholders, and document studies. The findings reveal that tourism development faces fundamental challenges, including the absence of a comprehensive masterplan, weak zoning implementation, minimal environmental management (waste and wastewater), and non-optimal community involvement. The study recommends an integrated development concept with four main strategies: (1) ecologically-based zoning with strict protection of conservation areas and sea turtle habitats; (2) environmentally friendly infrastructure development supporting waste management and clean water availability; (3) a collaborative governance model involving government, BUMDes, Pokdarwis, and local communities; (4) community economic empowerment through UMKM development and sustainable tourism packages. The implementation of this concept is expected to increase tourist visits by 15-20% per year while maintaining the environmental carrying capacity of the coastal ecosystem