Judul: Keanekaragaman Fabaceae di Kampus Dramaga IPB University dan Potensinya sebagai Sumber Pakan Lebah Madu
Abstrak: IPB University merupakan salah satu kampus biodiversitas di Indonesia, sebagian dari area di Kampus Dramaga terdiri atas vegetasi hijau dengan komposisi berbagai jenis tumbuhan berbunga (Angiospermae), di antaranya suku Fabaceae. Banyak jenis tumbuhan dari suku Fabaceae memiliki hubungan mutualiastik dengan serangga, seperti lebah, yang membantu penyerbukkan dengan menyediakan pakan berupa polen dan nektar. Inventarisasi jenis-jenis tumbuhan Fabaceae dan potensi pemanfaatannya di Kampus Dramaga IPB University belum pernah dilakukan. Penelitian ini bertujuan menginventarisasi tumbuhan suku Fabaceae di Kampus Dramaga IPB, membuat peta persebarannya, dan mengamati serta menelusuri potensinya sebagai sumber pakan lebah madu. Pengamatan di lapangan dilakukan menggunakan metode eksplorasi, lokasi koordinat keberadaan jenis-jenis Fabaceae dicatat dalam tabel dan dibuat peta sebaran menggunakan software Arcgis. Data potensi sebagai pakan lebah diperoleh dari pengamatan struktur bunga dan keberadaan kelenjar nektar, serta penelusuran pustaka. Berdasarkan inventarisasi didapatkan 25 jenis tumbuhan Fabaceae, meliputi jenisjenis liar dan ditanam, dari herba, semak, pemanjat, hingga pohon. Sebaran Fabaceae di kampus Dramaga IPB dijumpai di taman, pekarangan, kebun, dan hutan kampus (arboretum). Sebanyak 17 jenis dari suku Fabaceae yang dijumpai berpotensi sebagai pakan lebah madu, menyediakan polen dan nektar, beberapa diantaranya juga menghasilkan resin yang diperlukan lebah tanpa sengat untuk membuat sarang.
Keyword: Flora campus, bee forage plant, nectar source plant, pollen source plant, resin source plant

Judul: Keanekaragaman Spesies Tumbuhan Langka dan Sebarannya di Kampus IPB Darmaga
Abstrak: Various vegetation cover in IPB Darmaga Campus makes this place has plenty kinds of plants including naturally and wildly grown plants. Some of the plants are included as rare plants species. The rare plants species are potential to be utilized as media for conservation education. However, there’s no research yet about those rare plants and its distribution in IPB Darmaga Campus. The purpose of this research was to identify, determine the distribution, and document the history of rare plants species in IPB Darmaga Campus. Based on this research, there were 30 rare plants species from 18 families. Dipterocarpaceae was recorded as the dominating family. These rare plants species were dominated by tree habitus and were distributed in the whole area of IPB Darmaga, but mostly found in Faculty of Forestry area. These species were mostly planted by lecturers and alumni of Faculty of Forestry, Bogor Agricultural University (IPB). The purpose is for collection and student learning media.
Keyword: Bogor Agricultural University (IPB), rare plants species, IPB Darmaga Campus, conservation education

Judul: Characterizations of low alloy steel sae 4422  plated with chromic acid (Cro3)
Abstrak: Characterizations of low alloy steel SAE 4422 plated with chromic acid (CrOrO3) was use Optical Microscopy (OM), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), RD),Energy Dispersive Analysis of X-Ray (EDAX), Hardness Test and Roughness Test. Microstructures analysis exhibits cracks and grain boundaries microcracks as a characteristics of chrome metal found at plating metal. Perlite and Ferrite as grains of steel found at base metal with grain boundaries around it. Phase analysis of plating metal appropriate to chrome metal with lattice constant (a) is 2.559 Å and phase analysis of base metal appropriate to iron ferrite with lattice constant (a) is 3.318 Å. Both plating and base metal have cubic system. Chemical analysis of plating metal at surface section exhibits that cracks area have highest value of carbon element compare with grains and grains boundaries area. While chemical analysis of base metal at cross section exhibits that perlite have highest value of carbon element compare with ferrite and grain boundaries. The hardness value of plating metal at surface section and cross section are 753 and 637 VHN. While, the hardness value of base metal and interface area at cross section are 205 and 373 VHN. The roughness value at measurement points of chrome surface for as received sample are 0.445 μm. Observation used Optical Microscopy and Scanning Electron Microscopy exhibits surface irregularities combine to form surface texture of plating metal at surface section.
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