Pengelompokan Kecamatan Di Kabupaten Toraja Utara Berdasarkan Hasil Produksi Pertanian Menggunakan Analisis Gerombol

Peran sektor pertanian dalam pembangunan ekonomi antara lain. Sebagai penyedia pangan, sebagai sumber tenaga kerja bagi sektor perekonomian lain, sebagai sumber kapital bagi pertumbuhan ekonomi modern khususnya dalam tahap awal pembangunan, sebagai sumber devisa dan masyarakat pedesaan merupakan pasar bagi produk yang dihasilkan dari sektor indutri di perkotaan. Penelitian ini bertujuan untuk mengelompokan Kecamatan di Kabupaten Toraja Utara berdasarkan potensi sektor pertanian. Dalam penelitian ini menggunakan analisis gerombol dengan metode single linkage dan menggunakan pengukuran jarak squared euclidean. Hasil penelitian menunjukan bahwa pada sektor pertanian di Toraja Utara terbentuk empat gerombol

Bioinformatical Analysis of PHB Depolymerases from the Phototrophic Bacterium Rhodopseudomonas Palustris Using Computational Tools

In this study, PHB depolymerases from seven bacterial Rhodopseudomonas palustris were analyzed and presented in this communication. The composition of alanine, leucine and valine were the highest while lowest concentrations of asparagine and lysine residues were seen when compared to other aminoacids. pI value of Rp3 was 10.47 while the lowest pI of 5.67 was seen in Rp1. The instability index of all the depolymerases varied while for most of them it was less than 40 showing that some of them are stable while others are unstable. Aliphatic index was found to span within a range of 104 to 121. Secondary structural analysis of the depolymerases showed the pre-dominance of α-helices followed by random coils for all the depolymerases except Rp1 depolymerase. Significance of the above results are discussed in the light of existing literature

Synthesis of <i style="">N</i>-[2-benzyloxy-5-(2-oxiranyl)­phenyl]formamide: Formal synthesis of formoterol

167-169Nitration, benzylation followed by bromination of 4- hydroxy­acetophenone is described to obtain nitrobenzyloxy­phenacyl bromide derivative 3. Sodiumborohydride reduction of 3 gives rise to the diol 6. Reaction of 6 with Ph3P/I2/imidazole yields sty­rene derivative 7. Compound 7 on selective reduction of the nitro group followed by N-formylation and epoxidation affords the key intermediate N-[2-benzyloxy-5-(2-oxiranyl)­phenyl]­formamide 4

Synthesis of triphenylmethane derivative: Bisacodyl

615-617A new method for the synthesis of bisacodyl 1 is described. The key step involves migration of 2-pyridacyl group of phenyl pyridine-2-carboxylate 4 in AlCl3 at 160 oC to yield the intermediate 4-hydroxyphenyl (2-pyridyl) ketone 5a. The reaction of 5a with phenol using H3PO4 gives 1. This method has advantage over the existing literature methods because easily available pyridine-2-carboxylic acid is used as a starting material instead of the less stable pyridine-2-carboxaldehyde

Effect of the Viscosity Ratio on the Morphology and Properties of PET/HDPE Blends with and Without Compatibilization Context Sensitive Links

The influence of the molecular weight of polyethylene on the morphology and mechanical properties of blends of high-density polyethylene (HDPE) dispersed as droplets in a poly(ethylene terephthalate) (PET) matrix at various compositions was investigated. The difference of morphologies can be easily explained by the influence of the molecular weight on the viscosity ratio and therefore, on the critical capillary number. The compatibilizing efficiency of copolymers containing glycidyl methacrylate groups was also addressed in relation to their nature, the protocol for their drying and the molecular weight of the HDPE phase. The increase of adhesion between PET and HDPE was found to have a larger influence on tensile properties than the reduction of interfacial tension. The amount of compatibilizer needed for adhesion improvement depends on the interfacial area that is defined by both the interfacial tension and viscosity ratio of the components. A qualitative relation between the optimum amount of compatibilizer and the critical capillary number can be written