Browsing by Author "Savitri"

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Perilaku Merokok Dikalangan Siswa (Studi SMP Negri I Kerumutan
    (2012-11-07) Savitri
    Smoke to be phenomenon old stuff and be problem krusial menyaat this time. Smoker age in Indonesia now more younger even nudge children age and who self say that indonesia occupied rank sequence to three smokers lot totals. As to aim in this watchfulness is that is (1) detects to what factors that influence student berperila smoke? (2) detect impact smokes for student SMP Negeri 1 Kerumutan? (3) detect to how school side efforts in handle behaviour smokes students? . Here researcher uses qualitative method and researcher takes sample withdrawal by using method snow ball. Adolescent smoke caused by researcher external factor finds respondent strong influence is smoker because friend associates. In the case of friend group influence noodle associates to be cause factor increase it student target to be smoker and this matter will affect negative in student will be dependence habit (will fulfil willing/ need from within self). From student phenomenon smokes so very supposed guidance to parents, school side and society around. Remember so negative impact magnitude has smoked from also economy so fitting worry about towards behaviour has smoke among student SMP Negeri 1 Kerumutan for that anticipation step must be prepared with controls and restrain self begins from family and child.
  • No Thumbnail Available
    Item
    Preparation Of Sulfated Titania Aerogel For Glicerol Mono Oleate Syntesis Compared To Zeolite
    (2015-09-28) Tursiloadi, Silvester; Savitri
    Sulfated titania (TiO2-SO42-) aerogel has been prepared through one-step synthesis by the sol-gel method using sulfuric acid as catalyst followed by the one-step CO2 supercritical extraction. Highly porous aerogel with a large surface area (469m2/g) and high porosity (pore volume 1.6cm3/g) has been obtained. Thermal evolution of the gels were evaluated by TGA-DTA, N2 adsorption, TEM and XRD, and the IR absorption spectra measurements were made to discuss the structure of sulfated titania. The anatase phase is stable after calcination at temperatures up to 700oC, and the specific surface area, total pore volume and average pore diameter of anatase phase do not change significantly after calcination at 600oC. Thermally stable and highly acidic sulfated titania aerogel is attractive as catalyst. The catalytic activity of the sulfated anatase shows better ability than Zeolite for application as a catalyst for etherification reaction of oleic acid (C18H34O2) with glycerol (C3H8O3) to produce glycerol mono oleate.