Judul: Evaluasi Kerusakan Fisik Pohon dalam Upaya Mitigasi Pohon Tumbang pada Jalur Hijau Jalan di Jakarta Pusat
Abstrak: The presence of trees at the roadside greenbelt has the greatest influence among other vegetation types in improving the environmental quality. Therefore, the physical condition of tree became things to note because can result of a broken tree branches or twigs or fall of a tree which can lead to traffic accidents that would endanger the safety of road users. This study aims to analyze trees phsycal force to find the resistance of a broken tree branches or twigs or fall of a tree. In this case, the roads have been surveyed including H. Agus Salim Street, Teuku Umar Street, Diponegoro Street, Imam Bonjol Street, Sutan Syahrir Street, dan Moh. Yamin Street in Central Jakarta. The collected data are species and number of tree, type of damaged, place of damaged, condition of damaged, and incident of fallen tree in location. The data were analyzed with plant physiognomy approach. There are 1.646 trees were observed in six roadside greenbelt and 1.413 of them were damaged. Based on value of index tree damage classification 650 including healthly trees, 847 low damaged trees, 167 medium damaged trees, and 12 high damaged trees. Handling of each trees adjusted base on type and severity of damaged based on eradication and protection principles.
Keyword: Bogor Agricultural University (IPB), roadside greenbelt, physical damages, mitigate, fallen trees

Judul: Tipe Kerusakan Pohon Hutan Kota (Studi Kasus : Hutan Kota Bentuk Jalur Hijau, Kota Bogor - Jawa Barat)
Abstrak: Nowadays the quality of environment in urban area is getting decrease. One of ways that initiated concerning urban environmental quality management is setting urban forest in appropriate type and form based on main environmental problem issues in certain urban area. Greenbelt is one of urban forest form that most developed today. The greenbelt of roadside has many functions such as providing shade, trapping and absorbing the pollutants, reducing the noise and esthetical function. Trees are the main component to set the greenbelt. As trees are the most important component of greenbelt, health monitoring and maintaining of trees are needed in urban forest management. One of the methods used for monitoring the trees’ health is by inventing the trees’ damages. It is important since trees’ damage is potential in causing accidents and material loss. The aims of this study are to identify level of trees’ damages at roadside, identify types of trees’ damages and identify tress’ damage that potential causing accident. The result from this study hopefully can be useful to providing about the trees’ damage along greenbelt of dr. Semeru roadside and a recommendation to prevent and reduction the trees damage in greenbelt of dr. Semeru street of Bogor city. This study was conducted during 3 months (September-November 2009) along dr. Semeru street. Trees’ damages inventory was using Forest Health Monitoring method by observing three indications of tress’ damages, those were location of the damages, type of damages and level of seriousness condition of the trees. The trees’ damage along greenbelt of dr. Semeru roadside achived 91.38% that equal to 371 trees out of 406 total of trees there. Trees damage level was included as low level since the Damage Index Value (DIV) showed 6.12 (the highest scale is 21). There were 709 tress’ damage types. The biggest to smallest types of trees’ damages consisted of cancer (169 cases = 23.84%), broken or dead branch (116 cases = 16.36%), conks, fruiting bodies, and other indicators of advanced decay (109 cases = 15.37%), open wound (74 cases = 10.44%), brooms on roots or bole (68 cases = 9.59%), excessive brancing or brooms (53 cases = 7.48%), damaged foliage or shoots (29 cases = 40.09%), lost of apical dominance, dead terminal (27 cases = 3.81%), resinosis or gummosis (25 cases = 3.53%), broken bole or roots lees than 0.91 m (23 cases = 3.24%), broken or dead roots beyond 0.91 m (16 cases = 2.26%). There were 22 decay and holed dangerous tress. Cavity treatments can be done to maintain those trees but if the decays and holes were not forgiven, the best treatment is trees cutting.
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Judul: Kloning dan Ekspresi Human Interferon-alfa2a pada Yeast Metilotropik Pichia pastoris
Abstrak: Interferon (IFN) is a group of proteins that are secreted by body cells as a result of exposure to biological vertebrates such as: viruses, bacteria, protozoa and other compounds. There are three types of interferon, namely: alpha (α), beta (β) and gamma (γ) IFN. Interferon-α2a belongs to the type I interferon. This protein has a molecular weight of 21.550 kDa and consists of 188 amino acids (23 amino acid of signal peptide and 166 amino acids of mature protein). Interferon-α2a is also known to be used for the treatment of hepatitis C and as anti-tumor and antivirus agents. Regulator gene for IFN production under normal conditions, is in the off position to IFN is not produced. But when there are external stimuli, both viral and bacterial infections, a regulator gene switches on, and IFN production system running. At the time of an attack from a variety of disease agents actually the body will produce IFN, but generally the amount produced is not sufficient to fight the disease agents that multiply very quickly. Therefore IFN intake from outside is needed. This is the beginning of the use of IFN as a drug. Genetic engineering is an activity to manipulate the genes to get new products by creating recombinant DNA through gene insertion. Recombinant DNA technology has been used to produce IFN. Yeast such as Pichia pastoris can be an alternative as the host (system) to express human interferon genes and as a producer of IFN protein. Expression system P. pastoris offers several advantages for the production of recombinant proteins, such as: the high level expression of recombinant proteins, ease of scaling-up fermenter, low cost and ease of transformation techniques and selection of transformed cells such as bacteria . The existence of inducible AOX1 promoter is very strong, easily control the expression of recombinant proteins by induction. AOX1 is a promoter that controls gene expression of alcohol oxidase to metabolize methanol as carbon source of P. pastoris. Therefore,this study aimed to clone human interefron-α2a (hifnα2a) gene in E. coli and express it in metylotrophic yeast P. pastoris. Vector used in this study is pPICZαB (Invitrogen). Ligation process between insert (hifn-α2a gene) and vector (pPICZαB) performed by using T4 DNA ligase, which functions synthesize the formation of phosphodiester bonds linking the nucleotides with nucleotide insert plasmid vectors to produce recombinant (pPICZαB-hifnα2a). This recombinant plasmid transformed into XL1 blue cells (E. coli) by Heat shock method. The results of sequencing analysis (clone 6) using 5'AOX and 3'AOX primers indicate that DNA base sequence of human IFN-α2a genes has been subclone into pPICZαB vector (in frame). Recombinant plasmid (clone 6) linearized using BstX1 enzyme before transformed into X33 yeast cell. Transformation into cell was done by Electroporation. The X33 cell P. pastoris strain was used to express human interferon-α2a. X33 is strains with the phenotype Mut+ (methanol utilization plus) and can be used for positive transformants selection using zeocin. Phase protein production work using Mut+ strain occurred in two phases. The first phase is the use of glycerol to obtain a certain amount of biomass (high cell
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