Judul: Analisis lokasi keefektifan lubuk pakam sebagai pusat pengembangan Kabupaten Deli Serdang Propinsi Sumatera Utara
Abstrak: Tunjuan penelitian ini adalah untuk menganalisa lokasi keefektifan Lubuk Pakam sebagai pusat pengembangan wilayah kabupaten Deli Serdang dengan cara megnidentifikasi pusat pelayanan dan lokasi pelayanan. dst
Keyword: Analisis lokasi, Kab. Deli Serdang

Judul: Analisis kawasan hutan dan kawasan lindung dalam rangka arahan penataan ruang di Kabupaten Deli Serdang
Abstrak: As an upstream and buffer areas, the ecological existence of forest and other protected areas have an important role in Deli Serdang district. Nowadays, forest and other protected areas has been degraded due to the increasing population and development activities. Without any effort to reduce the degradation, the problem will even more serious and give a worse impact in the future. A research that aims to : (1) analyze forest area and other protected area in accordance to biophysical condition that should be maintained; (2) formulate guidelines of land allocation of district according to biophysical condition; (3) analyze the possibility of improper use of protected area function in Deli Serdang district and (4) find out the indication of population pressure to protected area was carried out at Deli Serdang district. Data processing and analysis were done with GIS system through overlay operation of different themes of data. The result of analysis showed that the forest area that should be maintained were 50.009 ha (20,02 %). Identification of protected area based on Presidential Decree No. 32 year 1990 showed that 96,764 ha (38.74%) were the protected area, while the remaining 153,016 ha or 61.26 % were the cultivation area. In total, there were 34.95% of the protected areas which were used for production or cultivation. According to the analysis result, there were 312 villages which have population pressure more than 1 and 66.59% of those villages are in the protected area.
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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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