Judul: The Activity of Apis cerana Honey Bee and the Potencial of Food Resources at Surouding Hive Area in Mekarjaya, Pandeglang
Abstrak: Informasi mengenai aktivitas mencari pakan (foraging) dan jenis tanaman sumber pakan penting untuk usaha peningkatan produktivitas lebah madu Apis cerana. Penelitian ini bertujuan menganalisis: (1) pola aktivitas harian lebah A.cerana yang dipengaruhi oleh faktor lingkungan, dan (2) keanekaragaman tanaman sumber polen di sekitar sarang lebah di Desa Mekarjaya, Kabupaten Pandeglang, Banten. Penelitian ini menggunakan dua koloni A. cerana yaitu koloni satu dan koloni dua dengan ukuran koloni yang sama. Perilaku yang diamati yaitu lebah keluar sarang, masuk membawa polen, dan masuk tanpapolen. Hasil pengamatan menunjukkan puncak aktivitas foraging koloni satupada pukul 07.40-08.50 WIB sedangkan koloni dua menunjukan aktivitas foraging yang rendah. Koloni dua melakukan absconding yang terjadi pukul 14.35- 16.30.Rendahnya aktivitas foraging pada koloni dua merupakan sinyal bahwa lebah akan melakukan absconding atau bermigrasi meninggalkan sarang. Hasil analisis vegetasi menunjukkan bahwa tanaman di sekitar sarang merupakan tanaman penghasil polen, nektar, atau polen dan nektar, didominasi oleh Cocos nucifera yang berpotensis menghasilkan polen dan nektar. Indeks keanekaragaman spesies tumbuhan menunjukkan bahwa keanekaragaman tanaman di area tersebut dikategorikan stabil. Hasil analisis jumlah spesies menunjukan bahwa jumlahspesies bernilai mendekati satu, sehingga dikategorikan jumlahnya relatif sama dalam berbagai tegakan., The information on honey bee foraging activities and food sources are important to increase the productivity of Apis cerana. This study aimed to analyze: (1) the daily activity pattern of A. cerana bees that is affected by environmental factors and (2) the diversity of pollen source plants around the beehive at Mekarjaya Village, Pandeglang Regency, Banten. This study used two colonies of A. cerana. The observed behaviors were bees leaving the hive, entering carrying pollen, and entering without pollen. This result showed that the peak of foraging activity in colony one occurs at 07.40-08.50. Colony two showed a low foraging activity that is a signal of the absconding bees or bee migrated. The correlation values between environmental factors: temperature, humidity, and light intensity compared to the honey bee activity was range from 0 to 1. The results of the vegetation analysis showed that the plants around the hive were plants that produce pollen, nectar, or pollen and nectar and the dominant was Cocos nucifera. The plant species diversity index showed that the diversity of plants in the area was categorized as stable. The results of species number analysis were close to one, thus the numbers were categorized as relatively the same in the various stands.
Keyword: Apis cerana, absconding, foraging, nectar source, pollen

Judul: Karakteristik Apikultur dan Meliponikultur di Provinsi Banten: Profil Peternak, Keragaman Spesies Lebah, dan Identifikasi Polen
Abstrak: Bee farming has been a part of Indonesian society, especially for people who live in rural areas and around forests. In Indonesia, apiculture and meliponiculture activities can be found in many areas, one of them is in the Banten Province. Bees produce honey derived from flower nectar which is very useful in both the pharmaceutical, food and beverage industries. Apart from producing honey, bees also play a role as plant pollinators. Pollination is carried out by bees with the help of hairs on the abdomen and legs, especially the hind tibia, so the pollen can be carried away and will be scattered indirectly when the bees move. The issue of pollinator decline which is influenced by many factors can affect the population of bees which results a decrease in pollination services provided by bees. This study aims to determine the profile of breeders, identify the diversity of bees and food source of bee based on pollen identification. Interviews were conducted with respondent breeders in Pandeglang and Lebak Districts, samples of bees were taken from the farmer's bee box. The bee samples were identified and then carried out the acetolysis process to determine the type of pollen carried by the bees. Based on the results of interviews, beekeeping activities in Pandeglang and Lebak districts are carried out by men whom most of in their productive age and the experience is still under 5 years. Based on the identification, the bees raised were Tetragonula laeviceps, Tetragonula sapiens, Heterotrigona itama, Geniotrigona thoracica, and Apis cerana. The results of pollen identification showed that there were 11 plant families that are the source of food for bees, namely Arecaceae, Poaceae, Fabaceae, Asteraceae, Verbenaceae, Anacardiaceae, Solanaceae, Euphorbiaceae, Lamiaceae, Amaranthaceae, and Flagellariaceae.
Keyword: honey bees, stingless bees, pollen, pollinator, pollination

Judul: Solusi Geometri Schwarzschild untuk Dimensi 4+1 dengan Invarian Rotasi Isotropik.
Abstrak: Metrik Schwarzschild merupakan solusi eksak pertama dari persamaan medan Einstein dengan mangasumsikan metrik statik dan simetris. Metrik Schwarzschild yang ditemukan oleh Karl Schwarzschild masih dalam dimensi 3+1, namun seiring dengan teori-teori terbaru yang menunjukkan bahwa alam semesta tidak hanya di dimensi 3+1. Maka melalui penambahan dimensi, tujuan penelitian ini memperoleh solusi pada geometri Schwarzschild untuk dimensi 4+1 dengan memodifikasi koordinat bola yang invarian rotasi isotropik dan melalui penurunan rumus seperti koordinat bola, simbol Christoffel, dan tensor Ricci. Selain mendapatkan solusi ini, metrik Schwarzschild dimensi 4+1 dapat digunakan sebagai metrik dasar untuk memperoleh solusi blackhole dan wormhole pada dimensi 4+1. Hasil akhirnya, dengan memanfaatkan modifikasi koordinat bola, metrik Schwarzschild dapat dibentuk sehingga diperoleh solusi geometri Schwarzschild untuk dimensi 4+1.
Keyword: metrik Schwarzschild, persamaan medan Einstein, modifikasi koordinat bola, penambahan dimensi, invarian rotasi isotropik