Judul: Rancang Bangun Sistem Informasi Manajemen Pengendalian Suku Cadang untuk Pemeliharaan Preventif Mesin Produksi PT Sang Hyang Seri
Abstrak: The demands of seeds with good quality, precise production, and sufficient amount implies seed production activities of PT Sang Hyang Seri (SHS) should always be fast and optimal. Production factors that determine the outcome is, among others, the readiness of equipment for operation with excellent condition. Preventive maintenance can prevent damage of the machines that occurred on the machines before use. Good preventive maintenance can be achieved by control of parts that support the procurement needs of all preventive maintenance activities of the machine. Manager of the company plays an important role to always supervise the activities of the control and maintenance of machine in factory. Therefore, research is needed to design a management information system (MIS) that can help control the activities of preventive maintenance spare parts in machinery. The purpose of this study is to analyze the need for the user of the MIS, then designing system that can make activity of controling parts for preventive maintenance to be effective and efficient. The system was then developed as a web-based system by using the programming language PHP (Hypertext Preprocessor). Several system functions were developed in accordance with the targeted users, each with different access rights. There are four main subsystems, namely, machinery checking subsystem, stock management subsystem, subsystems purchase of components, and supervision subsystems
Keyword: management information systems, PT SHS, parts control, Preventive maintenance

Judul: Optimisasi Waktu Penggantian Komponen pada Mesin Produksi Benih Padi di PT Sang Hyang Seri
Abstrak: Key points in the maintenance of seed production machine is the analysis on economical machine lifetime, routine engine maintenance, spare parts replacement, and purchase a new machine. Such activities need to be analyzed can to produce a minimum of cost production. This study was conducted to observe the seed production process, analyze the critical level of the components on seed production machines, and to analyze the activities of maintenance and replacement of components on seed production machines. The research method is involving the identification of the seed production machines, i.e. kind of machines, need for engine power, engine speed, engine capacity, efficiency of the engine, and the maintenance history. Data were obtained from direct measurements in the field and on from the company's engine conditions records from 1991 to 2011. Data were analyzed with assessment of critical components (ECR) and optimization of time for component replacement (CoTR). The results showed that conveyors are the most critical components in the system of seed production machine maintenance. CoTR of the components are ranging from 0.87 to 3.14 years, and it can be implemented with scheduled replacement of 6 months, 1 year, 2 years and 4 years, respectively. There is also a need to improve the recording procedures of engine maintenance activities by PT Sang Hyang Seri which include the damage and the treatment carried out.
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Judul: Morfogenetik Squat Lobster Genus Galathea Fabricus 1793 (Decapoda; Galatheidae) Di Kepulauan Seribu
Abstrak: Banyak taksa yang ditemukan sebagai spesies kriptik dengan kesamaan morfologis yang tinggi, tetapi secara genetik menunjukkan spesies yang berbeda. Spesies kriptik telah dilaporkan sebelumnya dalam Famili Galatheidae. Genus Galathea Fabricius 1793, termasuk dalam famili Galatheidae Samouelle 1819 yang merupakan salah satu kelompok yang paling beragam dari krustasea berkaki sepuluh yang dijuga dikenal sebagai "lobster jongkok (squat lobster)", karena perut mereka terselip di bawah dada, memberikan penampilan "berjongkok". Mayoritas spesies genus Galathea dicirikan oleh karapas yang ditutupi dengan setiferous transvers ridges dan rostrum segitiga pipih dengan empat gigi lateral. Kompleksitas karakter morfologis membuat mereka sulit diidentifikasi. Selain itu, informasi taksa ini terbatas di Indonesia. Oleh karena itu, teknik molekuler saat ini menjadi aset yang berguna untuk penggambaran spesies. Penelitian ini bertujuan untuk memberikan identifikasi molekuler dan morfologis lobster jongkok (squat lobster) di Kepulauan Seribu. Sebanyak 156 sampel lobster jongkok dikumpulkan dari karang mati saat ekspedisi pada tahun 2013 hingga 2015. Sampel yang dikumpulkan diidentifikasi secara molekuler menggunakan mitokondria DNA target lokus 16S, dan masing-masing diklasifikasi lebih lanjut dijelaskan secara morfologis. Sebanyak tujuh clades direkonstruksi dari pohon filogenetik menggunakan 122 sekuens yang teridentifikasi sebagai Allogalathea inermis (clade 1 dan clade 5), Galathea sp.2 (clade 2 dan clade 3), Procambarus fallax (clade 4) dan Plesionida concava (clade 6 dan clade 7) pada GenBank. Namun, persentase kemiripannya kurang dari 93%, menunjukkan bahwa database taksa ini masih terbatas atau tidak tersedia dalam GenBank. Spesimen dari masing-masing clade dijelaskan secara morfologis. Genus dan spesies dikenali dari bentuk rostrum dan struktur duri pada karapas dan abdomen. Karapas di punggung dengan punggung melintang, di sepanjang sisi dengan deretan duri. Rostrum dorsoventral berbentuk datar, segitiga, dengan 2-4 gigi horizontal. Pemanfaatan informasi molekuler dan morfologis dapat membantu memperjelas batasan dan kompleksitas identifikasi antar spesies.
Keyword: keanekaragaman hayati laut, kompleksitas habitat, mikrohabitat