Judul: Analisis finansial pengoperasian Unit Pengolahan Air Bersih (Water Treatment Plant) Kampus IPB Dramaga Bogor
Abstrak: Air merupakan kebutuhan pokok setiap orang, karena tanpa air kehidupan tidak akan berlangsung dengan baik. Sehingga pengembangan dan pengelolaan sumberdaya air sangatlah berperan penting dalam memenuhi kebutuhan air bersih. Penyediaan air bersih oleh Institut Pertanian Bogor saat ini menggunakan unit pengolahan air bersih atau water treatment plant (WTP). Terdapat 7 unit WTP yang mengolah air baku dari dua sumber, yaitu Sungai Cihideung dan Sungai Ciapus. Sebagai langkah untuk mengevaluasi dan pengembangan WTP yang ada di kampus IPB Dramaga, maka harus dilakukan analisis mengenai operasional maupun ekonomi.
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Judul: Evaluasi Kinerja Instalasi Pengolahan Air Bersih Unit 1 Sungai Ciapus di Kampus IPB Dramaga Bogor
Abstrak: Water is an important resource for human life needed continually in its daily activity. IPB uses river Cihideung and river Ciapus as the main water resource for fulfilling the campus water need. IPB has nine Water Treatment Plant (WTP). One of the WTP which is not optimally functioned enough is Unit 1 river Ciapus WTP with the capacity for about 20 liters/second. The aims of the research are to evaluate Ciapus WTP design criteria by comparing the design criteria based on SNI 6774-2008 concerning WTP package unit plan system. This research was carried out by collecting primary data, laboratory analysis, and based design criteria result evaluation. As a whole, it can be said that WTP performance still worked well enough because it had fulfilled the applicable criteria design, that is SNI 6774-2008. However, there were some units which had not yet fulfilled the criteria design, among others is coagulation, flocculation, and sedimentation, therefore it caused the process of water treatment was not quite optimal and the parameter above the quality fixed standard was able to indicate that there was a decrease of capability in reducing concentration.
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Judul: Systematics of Desmos (Annonaceae) in Malesia
Abstrak: Desmos is a woody climbing genus of Annonaceae which has been widely used as traditional medicine in several countries such as China, Indo-China, Thailand, and Peninsular Malaysia to treat dysentery, vertigo, fever, and postpartum. Phylogenetic studies on Desmos showed a close relationship between Desmos and Dasymaschalon. They share similar moniliform monocarpic fruits, but their flowers are different. It has been debated among Annonaceae researchers whether both genera should be treated as the same or distinct genus. Therefore, investigation on the taxonomic delimitation of Desmos species and Dasymaschalon will be necessary. Plastid genome (plastome) identification, leaf epidermal section of Desmos species and Dasymaschalon species, a taxonomic revision of Desmos in Malesia using morphological data, the spatial distribution of Desmos species in Malesia, and morphological and genetic variation in Desmos chinensis population using ISSR marker were used to investigate taxonomic delimitation of Desmos. Plastome study of Desmos chinensis and Dasymaschalon dasymaschalum was carried out to determine the origin, evolution, phylogenomics, and identify marker candidates for Desmos and Dasymaschalon or with other genera in Annonaceae. We discovered that the plastome of Desmos chinensis was circular with the size of 167,677 bp (smaller than Dasymaschalon dasymaschalum), consist of 111 genes, including 78 protein-coding genes, 29 transfer RNAs, and 4 ribosomal RNAs. The plastome showed a typical quadripartite structure, i.e., large single copy (LSC), small single copy (SSC), and two inverted repeats (IRs). The plastome of Dasymaschalon dasymaschalum was 191,488 bp in length, which also exhibited a typical quadripartite structure (LSC, SSC, and two IRs). Desmos chinensis and Dasymaschalon dasymaschalum showed different copies of accD, ndhD, ndhF, rps18, and ycf2. Protein coding genes of rpoB, rpoC1, rbcL, matK, rpl32, infA, and rpl36 were identified based on nucleotide diversity, sequence variability, and parsimony-informative sites. The genes are defined as molecular marker candidates of plastome for phylogenetic, barcoding, and population genetic research. We predicted that Desmos chinensis and Dasymaschalon dasymaschalum separated at ca. 64 million years ago during the Paleocene. Leaf anatomical feature study was carried to support the taxonomic delimitation of interspecific Desmos and intergeneric of Desmos and Dasymaschalon. Leaf anatomy in the paradermal section of 20 taxa (12 species of Desmos, eight species of Dasymaschalon) have been carried out. According to the leaf epidermal section, Desmos and Dasymaschalon are two distinct genera mainly distinguished based on the anticlinal wall undulation of epidermal cells and supported by variation of the crystal type and size. The anticlinal wall undulation of Desmos was almost straight to slightly wavy and never sinuous; meanwhile, Dasymaschalon varies from almost straight to deeply sinusoid. The crystals of Desmos consist of rhombohedral, druse type A, and druse type B crystals, whereas Dasymaschalon has prism, druse type A, druse type B, and druse type C crystals. The recent taxonomic revision using the morphological data was mainly based on the examination of about 1374 specimens from BO, L, WAN, ANDA, SING, SAN, K, P, HUH herbaria. The Desmos species in Malesia consists of eight species: D. acutus, D. chinensis, D. chryseus, D. dunalii, D. pedunculosus, D. subbiglandulosus, two new records: D. lawii and D. macrocarpus, and one
Keyword: Dasymaschalon, Desmoid clade, Magnoliid, plastid genome, phylogenomics analysis