Judul: Deskripsi Tanaman Tropis Jenis Pohon, Palem dan Semak Besar yang Sering Dijumpai di Kawasan Perkotaan
Abstrak: Plants is one of the main element in the landscape. Very important for designers, planners or organizer to know the nature and characteristics of the plants, so plants can grow up and be able to grow in accordance with function. However, lack of information obstruct the planners in selecting landscape plants. This study was carried out with field observations in Bogor City and Bandung City combined with literature study to obtain scientific information related the object under study. After field survey the study was followed by analysis of plants in the landscape by using the Semantic Differential method to know the quality of plants in the lansdscape, then tested with chi-square and it is known that both of the city tend to be different. As conclusion, plants in urban area are influence by environmental condition and planting space. It takes fairly wide planting space and the selection of the right plants so that the plants can grow well in urban areas.
Keyword: urban area, tropical plants, semantic differential, Plant Identification

Judul: Study of the Physical Characteristics and Ecological Functions of Plants as Indicators of Plant Selection for Yogyakarta City Identity
Abstrak: Native plants have ecological, aesthetic, and air pollution tolerant character, and have historical value as element of Green Open Spaces (GOS). Plants in the green belt of the Imaginary Line of Yogyakarta are different from other green belt plants, because there are special features. the preferences of the Yogyakarta City community are important to explore about the right plants, so as to create a good ecosystem on the green belt of Yogyakarta City roads. The purpose of this study was to identify plants to recommendations from people's preferences in choosing green belt plants in the City of Yogyakarta. the research method for selecting respondents used the Slovin method and in-depth interviews with cultural experts from the Yogyakarta Palace, and further tested using the Spearman correlation test. The results showed that of the 33 philosophical and native plants, the physiological characteristics of the plants had a percentage of 8.9%, namely Ficus benjamina L. as a philosophical plant and Chrysopyllum cainito L. 14.6% as a native plant. Visual plant characteristics that have a score of 7 are Murraya paniculata (L.) Jack and Aegle marmelos (L.) Corrêa. The results of physiological preferences were tested in the laboratory with the Air Pollution Tolerance Index (APTI) test. Carbohydrates play an important role in indicators of plant tolerance to air pollution, therefore it is necessary to use APTI modification with multiple linear regression. The results obtained are in more detail such as: asam jawa (Tamarindus indica L.) and tanjung (Mimusops elengi L.) are in the medium category, this is in accordance with their location which is in an area not dense with motorized vehicles, namely the Krapyak Panggung area - Jalan Gading - Alunalun south. The banyan tree (Ficus benjamina L.), gayam (Inocarpus fagifer (Parkinson ex F.A. Zorm), and sawo kecik (Manilkara kauki Dubard.) have criteria of tolerance to air pollution, according to the conditions of a densely populated motorized vehicle location. Therefore, the arrangement Yogyakarta's imaginary line would be good if philosophical plants were planted in accordance with the palace's initial guidelines.As for local plants such as timoho (Kleinhovia hospital L.) and sawo bludru (Chrysophyllum caimito L.) are rare plants, after testing the APTI modification they were categorized as tolerant to air pollution. This can be an interesting recommendation for planting on the roadside of the City of Yogyakarta, apart from being tolerant these plants also have good aesthetics. Recommendations for the Timoho roadside, Yogyakarta City, can be planted with timoho trees with added plant gratings so that road users can walk safely.Then on Jalan Affandi is one of the roads that has a congestion point in the city of Yogyakarta because it is close to 4 universities and offices. The right recommendation is to choose a sapodilla bludru tree that is in the median of Jalan Affandi.
Keyword: APTI, Masyarakat, Kota Yogyakarta, Tanaman Filosofis, Tanaman Lokal

Judul: Pemurnian dan karakterisasi protein inhibitor RNA helikase virus hepatitis C
Abstrak: Hepatitis C virus (HCV) infection is the second most common chronic viral infection in the world with global prevalence. This infection is contribution to chronic hepatitis and liver cirrhosis, often leading to hepatocellular carcinoma. There is no effective drug and vaccine available against HCV. The current standard treatment, a combination of pegylated interferon-α with ribavirin, is limited by its suboptimal response rate in a significant patient population, side effects, and affordability. Therefore, development of effective drug is needed. One approach to find out the candidate of antiviral drug is to discover the inhibitor of enzyme that essential for virus replication, such as RNA helicase. Streptomyces chartreusis 5-095 produce the inhibitor of HCV RNA helicase. The aim of this study was to purify the protein inhibitor which has inhibition activity against ATPase activity of RNA helicase HCV from S. chartreusis 5-095. The supernatant of culture S. chartreusis 5-095 exhibited high inhibiton activity against ATPase activity of RNA helicase HCV (approximately 72%) at 10 days of incubation. The extracellular protein inhibitor was partially purified by procedures of precipitation with ammonium sulfate to 65% saturation and gel filtration (Sephadex G50) using methanol water solution (4:6) as an eluen. The purity of protein inhibitor was monitored by SDS PAGE. The protein inhibitor showed a relative molecular mass were estimated to be 14 kDa and increased the purity 23,08 fold than those of the crude protein. The specific activity and IC50 after purification were 13,1338 U/mg and 0,0767 mg/mL, respectively. The activity of purified protein inhibitor showed its stability over pH range from 5-8 and optimum at pH 7,4. The inhibition activity showed its stability up to 70% at temperature 100 oC. The purified protein inhibitor relatively stable its activity at storage in the range of -20 oC to room temperature for 35 days.
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