Judul: Inventarisasi Potensi Tumbuhan di Taman Hutan Raya Inten Dewata, Sumedang-Jawa Barat
Abstrak: Grant Forest Park (TAHURA) Inten Dewata has riches of plants as many as 250 species. There are two districts surrounding the area of TAHURA Inten Dewata; Kota Kulon and Pasanggrahaan. Local people in those districts may have interaction with yhe area of TAHURA Inten Dewata, therefore a study of Stocktaking of plant Potential in TAHURA Inten Dewata is badly needed. Stocktaking of plant Potential in TAHURA Inten Dewata was done from May to July 2010. The methods used are field survey with the technique of analysis of vegetation and interviewing by using questionaires as well as herbarium techniques to identify plants. Data analysis was conducted using descriptive statistical techniques including graphical and tabular data. According to the result of analysis vegetation and the interview with the society around the area of TAHURA Inten Dewata, it was found that there were 154 species of plants that belong to 59 families. The total result of plant species based on the analysis of vegetation, it was found that there were 132 species based on the analysis of vegetation belong to 54 families with details specified; 113 species belong to 51 families in Mount Palasari and 27 species belong to 26 families found in Mount Kunci. The society exploits or makes use of 83 species of plants that belong to 35 families in TAHURA Inten Dewata. Species of plants exploited in Mount Palasari are 81 species and 2 species in Mount Kunci. There are 14 groups of usage of plant species which is used to fulfill the daily need. The most usage of plants is for firewood, namely 25 species, whereas the less, 1 species, is for cosmetic. The biggest interaction with TAHURA Inten Dewata of local people is in Gunung Palasari as the access to this area is relatively easier than Gunung Kunci that is boundary with fort. The society around the area make use of plants in TAHURA Inten Dewata. The species that are made use of by local people in TAHURA Inten Dewata such as sugar palm (Arenga Pinnata), coconut (Cocos nucifera), teak (Tectona grandis), bamboo (Gigantochloa apus), and mahagoni (Swietenia mahagoni) that are used for daily need.
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Judul: Potential of Useful Plants in R. Soerjo Grand Forest Park, Batu City, East Java.
Abstrak: Fungsi dari taman hutan raya menurut Undang-undang No. 5 tahun 1990 adalah sebagai koleksi tumbuhan. Namun, kawasan Taman hutan raya (Tahura) R. Soerjo telah mengalami gangguan yaitu akibat dari pembukaan industri dan perluasan lahan pertanian. Apabila hal ini berlangsung dalam jangka waktu yang lama maka akan berdampak terhadap hilangnya/punahnya spesies tumbuhan. Keinginan untuk mengkonservasi kawasan Tahura R. Soerjo akan semakin meningkat apabila diketahui manfaat/kegunaan dari spesies-spesies tumbuhan. Penelitian ini bertujuan untuk memperoleh data mengenai komposisi dan keanekaragaman spesies tumbuhan serta potensi tumbuhan berguna yang terdapat di dalam kawasan Tahura R. Soerjo. Penelitian ini dilaksanakan pada bulan September 2011. Metode yang digunakan dalam penelitian ini adalah analisis vegetasi, pembuatan herbarium dan kajian pustaka. Pustaka yang digunakan dalam mengidentifikasi spesies tumbuhan berguna antara lain Heyne (1987); Lemmens dan Soetjipto (1999). Berdasarkan hasil analisis vegetasi diperoleh 50 spesies dari 39 famili. Habitus yang paling banyak ditemukan yaitu berupa pohon dengan famili yang mendominasi adalah Euphorbiaceae. Dominansi vegetasi pada tingkat pohon, tiang, pancang, semai dan tumbuhan bawah secara berurutan adalah pasang (Quercus sundaica) dampul (Ficus lepicarpa) kopian (Glochidion macrocarpum) kopian (Glochidion macrocarpum) dan remejun (Euphatorium riparium) dengan Indeks Nilai Penting (INP) untuk masing-masing spesies 78,86%; 42,65%; 34,3%; 51,4%;dan 74,91%. Kemerataan individu spesies (E) pada tingkat pohon sebesar 0,809; tiang 0,873; pancang 0,899; semai 0,829; dan tumbuhan bawah 0,683. Selanjutnya, keanekaragaman spesies (H’) yang terdapat di Tahura R. Soerjo yaitu pada tingkat pohon 2,5; tiang 2,7; pancang dan semai sebesar 2,6; dan tumbuhan bawah 2,2. Dari seluruh spesies yang teridentifikasi 37 spesies (74%) dari 28 famili yang diketahui kegunaannya yaitu dikelompokkan ke dalam 9 kegunaan yaitu tumbuhan obat (16 spesies); tumbuhan pangan (14 spesies); bahan bangunan (15 spesies); tali, anyaman, dan kerajinan (2 spesies); pewarna dan tanin (4 spesies); pestisida nabati (3 spesies); pakan ternak (6 spesies); tumbuhan hias (4 spesies); kayu bakar (2 spesies). Kesimpulan dalam penelitian ini menunjukkan bahwa keanekaragaman spesies di Tahura R. Soerjo tergolong sedang. Sedangkan, kemerataan individu spesies pada tingkat pancang lebih merata dibandingkan tingkat tumbuhan lainnya. Spesies tumbuhan berguna yang paling banyak ditemukan adalah untuk tumbuhan obat (16 spesies).
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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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