Judul: Morfometri Kumbang Penyerbuk Kelapa Sawit (Elaeidobius kamerunicus Faust)
Abstrak: Pollination of oil palm mediated by wind or weevil. E. kamerunicus is an effective pollinator of oil palm. The purpose of this research was to analyze the morphometry of E. kamerunicus as oil palm pollinators. Weevils samples were collected in four regions in West Java and Banten, i.e. Rangkasbitung, Sukabumi, Cianjur, and Jasinga. Two hundreds individual of weevil were collected in each location consisted of 100 males and 100 females. Measurement of body part of E. kamerunicus were conducted on 11 characters using Raster Image software. Body measurements were tested by ANOVA and post hoc test with Tukey using R software. Male and female weevils of E. kamerunicus have different body sizes in each location. Mean of total length of male weevils was 3,443 mm (2274-4202 mm), total body width was 1,385 mm (1099-1700 mm) and abdomen height was 1.044 mm (0.798-1.328 mm). Mean of total lenght of female weevil was 3,046 mm (2008-3825 mm), total body width was 1,245 mm (1026-1482 mm) and abdomen height was 0.956 mm (0.756-1.196 mm). Total body length of weevil was largest in Cianjur followed by weevils in Jasinga, Rangkasbitung, and Sukabumi.
Keyword: Bogor Agricultural University (IPB), pollination, morphometry, oil palm, Elaeidobius kamerunicus

Judul: Populasi kumbang Elaeidobius kamerunicus Faust. (Coleoptera: Curculionidae) sebagai penyerbuk tanaman kelapa sawit (Elaeis guineensis Jacq.) di Kumai, Kalimantan Tengah
Abstrak: Elaeidobius kamerunicus is the effective pollinators of oil palm plants. The weevil is monophagous and complete their life cycle in male inflorescences of oil palm. Pollinating by the weevils increase oil palm productivity. This research aimed to observe weevil population and the relationship between environment factors and the weevil population. This research consist of observing morphological of weevil, estimating the population with counting the weevil on male inflorescences, and measuring the environment factors in the field. Relationship between environment factors and the weevil population were analyzed by CANOCO 4.0. High population of the weevil occurred in July and low in October. Population size of the weevil was above the minimum population for effective pollination. Weevil population on the field related to the number of spikelet of male inflorescences. Rainfall and temperature were negatively affect to the weevil population.
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Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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