Judul: Variasi Wajah Suku Betawi di Bekasi
Abstrak: Wajah manusia menyimpan banyak informasi yaitu: untuk menentukan usia, jenis kelamin, mengetahui ekspresi, emosi, dan komunikasi nonverbal. Masyarakat suku Betawi berasal dari hasil perkawinan antara suku dan bangsa di masa lalu. Keragaman asal suku Betawi menyebabkan terjadinya variasi wajah suku Betawi. Penelitian variasi wajah suku Betawi di Setu Babakan, Jakarta Selatan mendapatkan dua tipe wajah pria dan wanita. Namun penelitian variasi wajah suku Betawi di Bekasi belum pernah dilakukan. Penelitian ini bertujuan mengidentifikasi variasi wajah suku Betawi di Bekasi. Subjek yang digunakan 69 pria dan 134 wanita suku Betawi. Keragaman morfologi wajah berdasarkan 26 titik anatomis wajah depan dan 16 titik anatomis wajah samping. Analisis dan deskripsi variasi wajah dengan formula Thin Plate Spline (TPS) pada metode morfometrik geometris. Hasil analisis menunjukkan terdapat tiga tipe wajah depan pria, dua tipe wajah samping pria, dua tipe wajah depan wanita, dan dua tipe wajah samping wanita. Variasi wajah terdapat pada bentuk wajah, dahi, dagu, hidung, dan rahang. Sebagian besar pola penyebaran tipe wajah terjadi secara acak. Berdasarkan kedekatan lokasi, beberapa wajah mengelompok pada suatu tipe, walaupun pengaruh lokasi relatif kecil. Pembauran dalam pola perkawinan tidak mempengaruhi pembentukan variasi wajah.
Keyword: morfometrik, thin plate spline, titik anatomis

Judul: Variasi Wajah Pria dan Wanita Betawi di Perkampungan Budaya Betawi Setu Babakan
Abstrak: The functions of face are different among people, to know the expression and emotion, and also non-verbal communication. Betawi ethnic are the results of marriages between people from all over archipelago and also from outside. Betawi Population is believed to be native of Jakarta. The aim of this research was to study variations of male and female Betawi faces in Perkampungan Budaya Betawi Setu Babakan. The subject were 49 male with age between 14-68 years (mean = 21,59 years) and 74 female with age between 14-66 years (mean = 29,97 years). Description and analysis of face used thin plate spline formula in morphometric geometrics. This formula could describe the shift of anatomy points from one shape to another. The result showed one general type and two special types of face variations on the front face and side face. Front face typology was different than side face. Using different anatomy points produce different face typology. Variation of face shape could be found in face height, face width, glabella, nose, and jaw. The age range of male and female face was spread evenly in every male and female types. Typology of the face was not influenced by age. Assimilation in the mating pattern does not preclude the formation of facial variations.
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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