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.
Keyword: 

Judul: Diversity and Distribution Patterns of Invasive Alien Species in Andongrejo Resort, Meru Betiri National Park
Abstrak: Spesies tumbuhan asing invasif (IAS) merupakan spesies tumbuhan yang tumbuh baik secara liar ataupun hasil introduksi di luar habitat alaminya yang keberadaannya dapat mengganggu spesies lokal. Introduksi spesies asing invasif di zona rehabilitasi dan penyebaran spesies yang tumbuh secara liar di Taman Nasional Meru Betiri berpotensi invasif. Penelitian ini bertujuan untuk mengidentifikasi komposisi vegetasi, keanekaragaman spesies tumbuhan asing invasif, dan pola sebaran tumbuhan asing invasif di Resort Andongrejo Taman Nasional Meru Betiri. Metode pengumpulan data yang dilakukan yaitu dengan analisis vegetasi, observasi lapang, dan studi literatur yang kemudian dianalisis secara kuantitatif. Berdasarkan hasil analisis spesies tumbuhan asing invasif yang terdapat di Resort Andongrejo teridentifikasi sebanyak 24 spesies memiliki pola sebaran mengelompok diantaranya pada zona rehabilitasi teridentifikasi 24 spesies dan zona rimba teridentifikasi 9 spesies dengan dominansi tertinggi pada spesies Chromolaena odorata dan Mikania micrantha., Invasive alien species (IAS) are plant species that grow either wild or introduced outside their natural habitat and whose presence can disturb local species. The introduction of invasive alien species in the rehabilitation zone of Meru Betiri National Park has the potential to be invasive. This research aims to do identify the composition of vegetation, the diversity of invasive alien species (IAS), and the distribution patterns of IAS at the Andongrejo Resort, Meru Betiri National Park. The data collection method used was vegetation analysis, field observation, and literature study which was then analyzed quantitatively. Based on the results of the analysis of IAS found at the Andongrejo Resort, 24 species were identified that had a clumped distribution pattern, including in the rehabilitation zone 24 species were identified and 9 species were identified in the jungle zone with the highest dominance being the species Chromolaena odorata and Mikania micrantha.
Keyword: Composition, clumped, invasive alien species

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.
Keyword: