Judul: Studi Potensi Vertical Greenery sebagai Habitat Mikro Satwa di Kawasan Perkantoran DKI Jakarta
Abstrak: Vertical greenery merupakan alternatif baru untuk menambah RTH di DKI Jakarta. Selain untuk kenyamanan dan estetika, vertical greenery juga berpotensi sebagai habitat mikro bagi satwa, namun potensi ini belum banyak dimanfaatkan. Tujuan penelitian ini adalah meningkatkan vertical greenery yang berpotensi sebagai habitat mikro satwa. Metode yang digunakan dalam penelitian ini adalah indeks keanekaragaman Shannon-Wiener (H’), indeks kekayaan Jackknife, dan uji ANOVA. Philodendron burle adalah tanaman yang paling banyak ditemui pada kedua vertical greenery, yaitu sebesar 27,91% di Synthesis Square dan 39,10% di Synthesis Residence Kemang. Keanekaragaman tanaman dan famili satwa di tiap petak pada kedua vertical greenery masih tergolong keanekaragaman sedang (1 < H’ < 3) dan keanekaragaman rendah (H’ ≤ 1). Famili satwa yang ditemukan pada kedua vertical greenery berada di selang indeks kekayaan Jackknife, yaitu sebesar 11 famili satwa di Synthesis Square dan 6 famili satwa di Synthesis Residence Kemang. Uji ANOVA menunjukkan bahwa terdapat pengaruh nyata antara keanekaragaman tanaman dan famili satwa. Vertical greenery dikedua lokasi pengamatan berpotensi sebagai habitat mikro satwa, namun vertical greenery di Synthesis Square mampu mengundang lebih banyak famili satwa daripada Synthesis Residence Kemang. Hasil dari studi adalah enamrekomendasi yang dapat menjadi informasi dalam perencanaan vertical greenery sebagai habitat mikro satwa.
Keyword: habitat mikro, keanekaragaman jenis, vertical greenery

Judul: Study of Plant Character Diversity of Vertical  Greenery
Abstrak: Penerapan vertical greenery sebagai upaya penghijauan di lahan terbatas semakin berkembang. Pemilihan tanaman mempengaruhi kualitas fungsional dan visual vertical greenery, sehingga perlu mempertimbangkan kesesuaiannya. Penelitian dilakukan pada Februari hingga Juli 2021 terhadap PT. Godong Ijo Asri dan tujuh proyek vertical greenerynya yang berlokasi di DKI Jakarta dan Tangerang Selatan, yang bertujuan mengidentifikasi jenis tanaman dan kesesuaiannya untuk vertical greenery berdasarkan ciri fisik dan ekologisnya, menilai kesesuaian penggunaan, tata letak tanaman, pemeliharaan, dan kualitas estetika tujuh proyek vertical greenery melalui metode skoring, Scenic Beauty Estimation, dan analisis deskriptif kualitatif untuk menghasilkan rekomendasi jenis tanaman, penataan tanaman, dan pemeliharaan vertical greenery. Penanaman secara vertikal terpengaruh oleh gaya gravitasi sehingga jenis tanaman paling sesuai untuk vertical greenery didominasi groundcover karena bobotnya relatif ringan dan perakarannya dangkal, sedangkan tanaman pada ketujuh vertical greenery didominasi perdu yang tahan suhu tinggi di DKI Jakarta, tetapi dengan penataan yang sesuai karakter tanaman dan pemeliharaan yang efisien dengan penerapan teknologi menghasilkan vertical greenery dengan kualitas estetika yang tinggi. Kualitas estetika semakin baik jika pola vertical greenery rapi, karakter fisik tanaman beragam, dan ukuran bidangnya besar., The application of vertical greenery as a greening strategy on limited space is getting growth. The selection of plants affects the functional and visual qualities, so considering the suitability is important. This study started from February to July 2021 and conducted on PT. Godong Ijo Asri and their seven vertical greenery projects in DKI Jakarta and South Tangerang, to identify plant species and assess their suitability for vertical greeneries based on their physical and ecological characters, assess the suitability of their plant use, arrangement, maintenance, and aesthetics quality of seven vertical greenery projects using scoring method, Scenic Beauty Estimation method, and qualitative descriptive analysis to provide recommendations of plant species, arrangements, and maintenance of vertical greenery. Planting vertically affected by gravity force so the most suitable plants for vertical greenery dominated by groundcover that has a light weight and shallow root, while the plants used on seven vertical greeneries dominated by small tree with moderate category that adapted with high temperature at DKI Jakarta, but with proper plant arrangement and eficient maintenance by applying technology it leads to high aesthetics quality. The aesthetics quality affected by the planting pattern, plant diversity, and the size of vertical greenery.
Keyword: plant arrangement, plant maintenance, plant suitability

Judul: Characterizations of low alloy steel sae 4422  plated with chromic acid (Cro3)
Abstrak: Characterizations of low alloy steel SAE 4422 plated with chromic acid (CrOrO3) was use Optical Microscopy (OM), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), RD),Energy Dispersive Analysis of X-Ray (EDAX), Hardness Test and Roughness Test. Microstructures analysis exhibits cracks and grain boundaries microcracks as a characteristics of chrome metal found at plating metal. Perlite and Ferrite as grains of steel found at base metal with grain boundaries around it. Phase analysis of plating metal appropriate to chrome metal with lattice constant (a) is 2.559 Å and phase analysis of base metal appropriate to iron ferrite with lattice constant (a) is 3.318 Å. Both plating and base metal have cubic system. Chemical analysis of plating metal at surface section exhibits that cracks area have highest value of carbon element compare with grains and grains boundaries area. While chemical analysis of base metal at cross section exhibits that perlite have highest value of carbon element compare with ferrite and grain boundaries. The hardness value of plating metal at surface section and cross section are 753 and 637 VHN. While, the hardness value of base metal and interface area at cross section are 205 and 373 VHN. The roughness value at measurement points of chrome surface for as received sample are 0.445 μm. Observation used Optical Microscopy and Scanning Electron Microscopy exhibits surface irregularities combine to form surface texture of plating metal at surface section.
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