Judul: Laju Infiltrasi Tanah Pada Tegakan Jati (Tectona Grandis Linn F) Di BKPH Subah KPH Kendal Unit I Jawa Tengah
Abstrak: Infiltration is the movement of water through the soil. These is one of hidrologycal cycles. Infiltrate which annoyed at one area will influence the cycle hidrology on that area. So, management of soil is important to keep the equilibrium of the cycles. Beside that, it is important to use as plant which will give forest productivity. Forest productivity can be conducted with ground quality and availibility of ground water through infiltrateing. Soil phisic is a number of factors impact soil infiltration. They are, bulk density, porosity, permeability, soil water content, ect. Infiltration measured by double ring infiltrometer and soil sample have taken by method not disturbed. Then, soil sample were collected analysed on soil Laboratory of Agriculture Faculty. Regretion have made between soil phisic and infiltration. Regretion also have made between infiltration and stand density. Result showed that infiltration have strong relation with soil phisic. But, infiltration does not have relation with stand density. Infiltration also influences by organic matter, tillage, open cwron, temperature and topography.
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Judul: Keragaan Infiltrasi Tanah Latosol pada Beberapa Penggunaan Lahan di DAS Ciujung
Abstrak: Land use is an important aspect in maintaining ecosystem sustainability, particularly in the watershed ecosystem. Land use determines to physical, chemical, and biological characteristics of soil. These soil characteristics influence to the growth of plants and the performances of water infiltration into soil. Infiltration is an essential part of the hydrological cycle that has an important role water availability in the soil. Infiltration process have an important role to the distribution of rainfall and control to runoff, flood, erosion and ground water storage and finally will determines the availability of river discharge in dry season. The aims of this research is to assess the performance of soil infiltration in various land use in Ciujung watershed. The study was conducted on three land use types that included plantative forest (HT), dense mixed garden (KCR), and less-dense mixed garden (KCTR). The field observation was done by using the Double Ring infiltrometer method, while the the analysis of the physical and chemical and other soil characteristics were done in the Laboratory of Soil and Water Conservation, Department of Soil Science and Land Resources, Faculty of Agriculture. The results of this research showed that the infiltration rate is strongly influenced by land use. Infiltration rate is the highest and most stable on HT land use, followed by KCR and KCTR. Constant infiltration rate at HT and KCR is belonging to quickly class, while at KCTR is relatively moderate to fast. The magnitude of the rate constant infiltration in HT (23.4 cm h-1) is higher than KCR (13.2 cm h-1) and KCTR (6.0 cm h-1). The high rate infiltration of the soil on the land use of HT support it able to accommodate as much water (6.45 dm3) that higher than at KCR (3,66 dm3) and at KCTR (1.52 dm3). Infiltration rate is influenced by pores with large size (PDSC), while the volume of water infiltration is more influenced by the total porosity of the soil. Besides it is influenced by land use, soil infiltration in the study area is also determined by the physical and chemical characteristic of the soil organic matter, bulk density, total porosity, aggregate stability, macro pores, very fast drainage pore (PDSC), and soil texture.
Keyword: Bogor Agricultural University (IPB), infiltration volume., physical and chemical characterstics of soil, land use, Infiltration rate

Judul: Produk emulsi dari kombinasi minyak ikan sardin (Sardinella sp.) dan cucut (Centrophorus sp.)
Abstrak: Minyak ikan sardin memiliki kelebihan yaitu kandungan Eicosapentanoad acid (EPA) yang cukup tinggi, namun rendah kandungan Dokosaheksanoa acid (DHA), disisi lain minyak cucut memiliki kandungan DHA dan squalen yang tinggi namun rendah kandungan EPA. Kombinasi minyak ikan sardin dan cucut diharapkan dapat menghasilkan produk minyak ikan kaya omega-3 dan squalen. Emulsi minyak ikan yang diperkaya omega-3 merupakan salah satu produk impor yang umumnya diperuntukkan pada anak-anak. Sejauh ini belum ditemukan produk emulsi minyak ikan di pasaran yang diperkaya dengan squalen. Produk emulsi kaya omega-3 dan squalen diharapkan tidak hanya diperuntukkan bagi anak-anak, namun juga dapat diperuntukkan bagi orang dewasa dan lansia sebagai suplemen. Tujuan penelitian ini adalah membuat produk emulsi minyak ikan diperkaya dengan squalen dari kombinasi minyak ikan sardin dan cucut. Penelitian ini dibagi menjadi empat tahapan, yaitu tahap pertama karakterisasi minyak ikan sardin dan cucut sebelum dan sesudah pemurnian. Tahap kedua yaitu penentuan kombinasi minyak ikan sardin dan cucut terbaik dengan perbandingan (1:1, 1:2, 1:3, 1:4, 2:1, 3:1, dan 4:1). Tahap ketiga yaitu penentuan stabilitas minyak ikan terbaik dengan atau tanpa penambahan alfa tokoferol pada suhu ruang. Tahap keempat yaitu fomulasi emulsi minyak ikan menggunakan kombinasi bahan pengemulsi guar gum dan whey protein dengan perlakuan konsentrasi guar gum 0.5%, 0.70%, 1%, 1.1% dan 1.3%. Pemurnian dengan proses degumming, netralisasi, dan bleaching menurunkan nilai total oksidasi minyak ikan cucut sehingga memenuhi standar IFOS. Pemurnian juga dapat meningkatkan kandungan SFA, MUFA dan PUFA. Kombinasi minyak ikan terbaik ditemukan pada rasio 1:4 (sardin:cucut). Perlakuan tersebut sudah memenuhi standar parameter total oksidasi IFOS yaitu ≤ 26.0 mEq/kg dengan kandungan omega-3 sebesar 8.55% dan squalen sebesar 43.16%. Semakin tinggi rasio penambahan minyak sardin pada minyak ikan cucut maka kandungan omega-3 akan semakin tinggi. Penambahan alfa tokoferol 0.02% pada minyak ikan mampu memberikan penghambatan oksidasi selama 6 hari penyimpanan. Berdasarkan paramer uji kestabilan, viskositas dan ukuran droplet produk emulsi terbaik dihasilkan pada formula dengan penambahan guar gum 1.1% dan whey protein 0.4%.
Keyword: cucut, emulsi, kombinasi, omega-3, sardin, squalen