Judul: Keanekaragaman Spesies Tumbuhan Asing Invasif di Resort Ranu Pani Taman Nasional Bromo Tengger Semeru
Abstrak: Invasive Alien Species (IAS) is species of flora or fauna, including the microorganisms that live out of the native habitat. The IAS are growing rapidly cause it doesn’t has natural enemy, therefore it becoming weeds, pests, and diseases on native species. This study conducted on forest and savanna in Ranu Pani Resort. Vegetation analysis in the forest was using combination of strip and line quadrat method. Five species of IAS that belong into 3 families are identified based on analysis result. Vegetation analysis in savanna was using quadrat method, and the result is 2 species of IAS was identified which is also found in the forest. Seven invasive species identified in this study and the result from Morishita index showed that 5 species has a clumped distribution patterns, there are Acacia decurrens, Ageratina riparia, Austroeupatorium inulifolium, Imperata cylindrica, and Tithonia diversifolia. Furthermore, the exploration result is 2 species of IAS has found, there are Ricinus communis and Lantana camara.
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Judul: Keanekaragaman dan Pola Sebaran Spesies Tumbuhan Asing Invasif di Resort Gunung Butak Taman Nasional Gunung Halimun Salak
Abstrak: dapat hidup serta berkembang di luar habitat alaminya dan dapat mendominasi suatu habitat. Penelitian ini bertujuan mengindentifikasi keanekaragaman spesies tumbuhan asing invasif dan pola sebaran spesies tumbuhan asing invasif di Resort Gunung Butak Taman Nasional Gunung Halimun Salak. Metode yang digunakan adalah metode analisis vegetasi kombinasi jalur berpetak pada hutan dan analisis petak ganda pada savana. Tumbuhan asing invasif di Resort Gunung Butak Taman Nasional Gunung Halimun Salak yang teridentifikasi sebanyak 24 spesies dari 12 famili yaitu Achmella paniculata, Ageratum conyzoides, Axonopus compressus, Bellucia axinanthera, Calliandra calothyrsus, Centella asiatica, Chromolaena odorata, Clidemia hirta, Commelina diffusa, Crassocephalum crepidioides, Ipomea cairica, Lantana camara, Maesopsis eminii, Melastoma malabathricum, Mikania micrantha, Mimosa pudica, Musa acuminata, Paspalum conjugatum, Piper aduncum, Solanum torvum, Stachytarpheta indica, Tihtonia diversifolia, Imperata cylindrica, dan Sphagneticola trilobata.
Keyword: pola sebaran, resort gunung butak, tumbuhan asing invasif

Judul: Mathematical model of Hematopoietic Stem Cell in Chronic Myelogenous Leukemia with and without Therapy
Abstrak: Leukemia or blood cancer is a diverse group of neoplastic disease, characterized by the multiplication of abnormal leukocytes or malignant transformation of blood-forming cells in bone marrow and lymphoid tissues. One of the most common types of leukemia is Chronic Myelogenous Leukemia (CML), which is usually diagnosed by the presence of certain chromosomal abnormalities, the so-called Philadelphia chromosome (Ph). One of the treatments of CML is Granulocyte Colony-Stimulating Factor (G-CSF). In this paper, we discuss two Hematopoietic Stem Cell (HSC) models, i.e. HSC without treatment and HSC with G-CSF treatment. The model of HSC without treatment included three equations representing the dynamics of HSC, leukocyte and platelet. Whereas, the model of HSC with G-CSF treatment includes the previous three equations and adds two more equations representing G-CSF injection and G-CSF circulation. The stability behavior of the system approaching the equilibrium points in the simulation study is carried out using Mathematica 7.0. The simulation results show that the G-CSF treatment can successfully decrease the number of HSC, which means reducing the CML.
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