Judul: Evaluation of Plant Effectiveness for Ecological and Safety Functions Case Study of Corridor 8 Transjakarta, DKI Jakarta
Abstrak: Jalur jalan hijau dan infrastruktur hijau masih sangat terbatas di Jakarta. Transjakarta Koridor 8 Harmoni – Lebak Bulus meliputi wilayah Jakarta Pusat, Jakarta Barat, dan Jakarta Selatan yang merupakan pusat pemerintahan dan pemukiman padat penduduk. Tingginya aktivitas di kawasan tersebut menyebabkan peningkatan arus transportasi dan emisi gas rumah kaca. Sektor transportasi merupakan penyumbang emisi CO2e tertinggi di Ibu Kota, sehingga menurunkan kualitas lingkungan khususnya greenbelt pada Koridor 8 Transjakarta. Kondisi vegetasi, seperti sifat fisik pohon yang buruk pada jalan, dapat menjadi masalah vital jika dikaitkan dengan lingkungan sekitar, baik dari segi kualitas tanaman, tingkat mereduksi polusi udara, kebisingan dan keamanan pengguna jalan. Penilaian fungsi ekologi dan pengaman dalam penelitian ini terdiri dari 7 variabel yaitu peredam kebisingan, pereduksi polusi, kelembaban udara, kontrol pandangan, kontrol kesilauan, pengarah dan peredam kecelakaan. Lokasi penelitian dibagi menjadi 5 segmen dengan kondisi keadaan jalan yang berbeda. Metode yang digunakan adalah deskriptif dan kuantitatif. Ada tiga analisis yang digunakan yaitu penilaian aspek fungsi ekologis, penilaian aspek fungsi pengaman dan Analytical Hierarchy Process (AHP). Didapatkan hasil penilaian pada fungsi ekologis dengan variabel peredam bising adalah (Polyalthia longifolia) Glodongan Tiang, (Casuarina sp.) Cemara, (Acacia auriculiformis) Akasia, dan (Archontophoenix alexandrae) Palem Alexander. Hasil penilaian pereduksi polusi tiap segmen di dominasi jenis vegetasi (Mangifera indica) Mangga, (Polyalthia longifolia) Glodongan Tiang, (Carbera odollam) Bintaro. Penilaian fungsi pengaman diperoleh hasil dengan kategori segmen pada pinggir jalan dengan kategori baik yaitu segmen 3 dan segmen 5, kemudian sedang pada segmen 4, buruk pada segmen 1 dan 2. Median jalan pada fungsi pengaman dengan kategori baik terdapat pada segmen 3 dan 4 , sedang pada segmen 5, buruk pada segmen 1 dan 2. Hasil gabungan AHP menunjukkan skala prioritas tertinggi untuk rekomendasi evaluasi penelitian ini yaitu Pereduksi Polusi sebagai variabel terpenting dengan bobot sebesar 0,348, peringkat kedua yaitu Peredam Kecelakaan dengan bobot 0,300, peringkat ketiga yaitu Kontrol Kesilauan dengan bobot 0,150. Hasil gabungan 3 pakar menghasilkan nilai rasio konsistensi sebesar 0,05, nilai rasio konsistensi 0,05 lebih kecil dari 0,10 sehingga dapat dikatakan sudah memenuhi syarat konsisten. Penelitian ini dapat digunakan sebagai informasi dasar untuk memilih vegetasi dan lokasi yang cocok untuk di perbaiki secara ekologis, pengaman dan penataan ruang terbuka hijau di Jakarta khususnya pada Jalur Hijau Transjakarta Koridor 8. Green lanes and green infrastructure are still very limited in Jakarta. Transjakarta Corridor 8 Harmoni - Lebak Bulus covers Central Jakarta, West Jakarta, and South Jakarta which are government centers and densely populated settlements. The high activity in the area causes an increase in transportation flows and greenhouse gas emissions. The transportation sector is the highest contributor to CO2e emissions in the capital city, thus reducing environmental quality, especially the greenbelt in Transjakarta Corridor 8. Vegetation conditions, such as poor physical properties of trees on the road, can be a vital issue when it comes to the surrounding environment, both in terms of plant quality, level of air pollution reduction, noise and road user safety. The assessment of ecological and safety functions in this study consists of 7 variables, namely noise reduction, pollution reduction, air humidity, view control, glare control, directional and accident reduction. The research
Keyword: Analisis Hirarki Proses, Jalur Hijau Jalan, RTH, Vegetasi

Judul: Evaluasi jalur hijau jalan sebagai penyangga lingkungan sekitarnya dan keselamatan pengguna jalan bebas hambatan jagorawi
Abstrak: The traffic problems have been increasing in recent few years. In many big cities, the volume of vehicle causes air pollutions and noises that are disturbing the comfortably of men activities. Highway is the most contributing factor in traffic problems. From many solutions, the greenery in highway is the one of sollutions against negative effects of traffic as environment buffer, especially for communities and for supporting users safety. The objectives of this study are to evaluate roadside greenery in Jagorawi High way as a buffer and for supporting of users safety in three major functions, there are air pollutants reduction, noises abatement, and space barrier. Fieldwork regarches were conducted onto three segments road: Bogor's - Ciawi's tollgates to Sentul’s ramp as lst segment (± 15,4 km length); Sentul's ramp to Cimanggis's ramp as 2nd segment (± 13,5 km length); and Cimanggis's ramp to Taman Mini's to gate as 3rd segment (± 15 km length). Every segment was divided into two seasions: East side and West side. The comparative method was used to measure subability and compatibility plants in roadside greenery in Jagorawi according to the regulations and principles of landscape architecture science. The comparative method result that all segments and sections on fieldwork indicate that plants selection, structures, patterns and configurations were not suitable and compatible enough for supporting the thee major functions of road greenery (assessment ranged from bad to moderate grades). The greenery at first segment achieves moderate grade (44,26% requirements fulfilled) in air pollutants reduction, bad to moderate grade (32,67% - 41,67% requirements fulfilled) in noises abatement, moderate grade (56,00% - 57,3394 requirements fulfilled) in space barrier function and moderate grade (56,00% - 58,17% requirements fulfilled) in aesthetic function. The second segment achieves moderate grade (47,54% - 50,32% requirements fulfilled) in air pollutants reduction, bad grade (30,0% requirements fulfilled) in noises abatement, moderate grade (57,69% - 58,85% requirements fulfilled) in space barrier function and moderate grade (57,50% - 58,46% requirements fulfilled) in aesthetic function. The third segment archieves moderate grade (49,35% - 50,74% requirements fulfilled) in air pollutants reduction, moderate to good grade (59,33% - 69'67% requirements fulfilled) in noises abatement, good grade (62,83% - 69'67% requirements fulfilled) in space barrier function and moderate grade (59,42% requirements fulfilled) in aesthetic function. According to the above analysis result, the study proposes a concept of appropriate plants selecting, according its structure and performance and so pattern and configuration to achieve the effectiveness of roadside greenery as environment buffer and supporting the safety in Jagorawi Highway.
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Judul: Synthesis of Biphasic Calcium Phosphate Made of Eggshells Through A Hydrothermal Method
Abstrak: Biphasic Calcium Phosphate mixed of hydroxyapatite and tricalcium phosphate. A hydrothermal method of synthesizing by mixing CaO as calcium source and (NH4)2HPO4 as phosphate source with distilled water. CaO got from calcination process made of eggshells. All samples were synthesized using hydrothermal reactor then followed by sintering process. The molar ratio of Ca and P for all samples was 0.5 M : 0.3 M. Hydrothermal temperature and sintering temperature were variated they are 250 ºC, 300 ºC for hydrothermal and 800 ºC, 900 ºC, 1000 ºC for sintering, higher treatment temperature, tricalcium phosphate appears. Final results of synthesis were characterized by using X-ray Diffraction and Fourier Transform Infrared. X-ray Diffraction patterns was ecompared with database Join Committee on Powder Diffraction Standards and found tricalcium phosphate and hydoxyapatite.
Keyword: biphasic calcium phosphate, hydrothermal, hydroxyapatite, tricalcium phosphate