Judul: Analysis of Changes in Social, Culture and  Community Welfare in Agrotourism Areas (Case Study: Agro-tourism  Development in Sidamanik Tea Plantation, Sidamanik Village, Sidamanik  District, Simalungun Regency).
Abstrak: Agrowisata merupakan kegiatan pariwisata yang mengandalkan lahan pertanian atau agro sebagai daya tarik bagi wisatawan. Pembangunan pariwisata dapat menyebabkan perubahan sosial budaya dan ekonomi kepada masyarakat yang bertempat tinggal di wilayah pariwisata tersebut. Tujuan dari penelitian ini adalah untuk menganalisis perubahan sosial yang terjadi setelah pelaksanaan pembangunan agrowisata pada masyarakat pedesaan yang dilihat dari perubahan struktur sosial dan budaya, serta menganalisis tingkat kesejahteraan masyarakat sebelum dan sesudah pelaksanaan pembangunan Agrowisata Kebun Teh Sidamanik. Metode penelitian yang digunakan adalah metode kuantitatif. Data dikumpulkan melalui kuesioner kepada 60 responden, yang dipilih dengan teknik convenience sampling. Sementara itu data kualitatif dikumpulkan melalui wawancara mendalam kepada informan. Hasil penelitian menunjukkan bahwa hadirnya agrowisata memberikan pengaruh perubahan sosial pada stratifikasi sosial, perubahan kebudayaan, dan peningkatan kesejahteraan masyarakat di sekitar agrowisata., Agrotourism is a tourism activity that relies on agricultural or agro land as an attraction for tourists. Tourism development can cause socio-cultural and economic changes to the people who live in the tourism area. The aim of this research is to analyze the social changes that occurred after the implementation of agrotourism development in rural communities as seen from changes in social and cultural structures, as well as to analyze the level of community welfare before and after the implementation of the Sidamanik Tea Garden Agrotourism development. The research method used is a quantitative method. Data was collected through questionnaires to 60 respondents, who were selected using convenience sampling techniques. Meanwhile, qualitative data was collected through in-depth interviews with informants. The research results show that the presence of agrotourism influences social change in social stratification, cultural change, and increases the welfare of the community around agrotourism
Keyword: grotourism, welfare, socio-cultural changes

Judul: Tourism Development and Socio-Cultural Changes of Coastal Communities (Case Mandeh Tourism Area, West Sumatera)
Abstrak: Pariwisata merupakan kegiatan yang dilakukan oleh wisatawan ke tempat wisata dengan berbagai tujuan tertentu dalam waktu tertentu. Proses pembangunan pariwisata diinisiasi oleh berbagai macam individu, kelompok, maupun komunitas dan tidak terlepas dari berbagai pihak dan stakeholder didalamnya. Berdasarkan penelitian terdahulu, adanya pariwisata berdampak kepada kondisi masyarakatnya yakni terjadinya perubahan sosial budaya masyarakat. Tujuan penelitian ini adalah untuk menganalisis dampak pariwisata terhadap struktur, proses sosial, nilai budaya dan tingkat kesejahteraan masyarakat di Kawasan Wisata Mandeh, Sumatera Barat. Dianalisis juga aktor dan peranannya dalam pembangunan pariwisata di Kawasan Wisata Mandeh. Penelitian ini menggunakan pendekatan kuantitatif melalui kuesioner menggunakan teknik convenience sampling dan pendekatan kualitatif dengan wawancara mendalam. Jumlah responden dalam penelitian ini adalah 60 orang masyarakat Nagari Ampang Pulai. Hasil penelitian menunjukkan bahwa adanya perbedaan kondisi masyarakat sebelum dan sesudah adanya pariwisata yang dilihat dari struktur dan proses sosial, kebudayaan dan tingkat kesejahteraan pada masyarakat Nagari Ampang Pulai., Tourism is an activity carried out by tourists to tourist attractions with certain destinations at a certain time. The process of tourism development is initiated by various individuals, groups and communities and is inseparable from various parties and stakeholders in it. Based on previous research, the existence of tourism has an impact on the condition of the community, namely the occurrence of socio-cultural changes in society. The purpose of this research was to analyze the impact of tourism on structures, social processes, cultural values and the level of community welfare in the Mandeh Tourism Area, West Sumatra. Actors and their roles in tourism development in the Mandeh Tourism Area are also analyzed. This research uses a quantitative approach through questionnaires using techniques convenience sampling and a qualitative approach with in-depth interviews. The number of respondents in this research were 60 people from Nagari Ampang Pulai. The results showed that there were differences in the condition of the community before and after tourism as seen from the structure and social, cultural processes and level of welfare in the Nagari Ampang Pulai.
Keyword: actors, coastal communities, tourism, socio-cultural changes, welfare

Judul: Separation of Neodymium from U3Si2/Al Fuel Plate for Burn-Up Determination
Abstrak: Neodymium is a common fission product produced in nuclear fission reactions. Neodymium in this study was chosen as a burn-up indicator for U3Si2/Al fuel element plates because the neodymium isotope is a stable fission product with a fairly high yield. Some procedures were carried out to separate neodymium, starting with the separation of cesium isotopes (137Cs, 134Cs) through the precipitation method, then separation of uranium isotopes (235U, 238U) and plutonium isotopes (239Pu, 238Pu) with Dowex 1x8 ion exchange resin, and separation of neodymium (Nd), samarium (Sm), as well as cerium (Ce) with Dowex 1x4 ion exchange resin. The Cs recovery reached 99.95%. The U and Pu isotopes resulting from the separation are subjected to an electrodeposition process and the weight of each isotope can be measured with an alpha spectrometer. The separation results of Nd from Sm and Ce have been proven using an XRF spectrometer. The neodymium isotopes separation was corrected using the standard addition method, and an average total Nd content of 2.4 ppm was obtained in the PEB U3Si2/Al bottom solution. It is hoped that this separation method can be applied in determining burn-up of nuclear fuel.
Keyword: neodymium, burn-up indicator, U3Si2/Al fuel plate