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Ditemukan 11079 dokumen yang sesuai dengan query
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Tschierske, Carsten, editor
"This book about fluorinated liquid crystals : design of soft nanostructures and increased complexity of self-assembly by perfluorinated segments, liquid crystalline crown ethers, star-shaped mesogens – hekates : the most basic star structure with three branches, DNA-based soft phases, phases made of bent-core mesogens, achiral symmetry breaking in liquid crystalline phases, and nanoparticles in liquid crystals and liquid crystalline nanoparticles, stimuli-responsive photoluminescent liquid crystals."
Berlin: Springer, 2012
e20405913
eBooks  Universitas Indonesia Library
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Ridla Bakri
Depok: UI-Press, 2016
PGB 0015
UI - Pidato  Universitas Indonesia Library
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Mura, Manuela
"Manuela Mura's thesis is devoted to ab initio studies of self-assembled organic molecules on a gold surface. This area of research is particularly vibrant because of the various applications such studies have in nanoscience and surface chemistry and physics. In this thesis Manuela Mura uses theory to suggest atomistic models for the observed assembled and she proposes an assembly mechanism. The methods and results developed as part of this work will be of wide interest to physicists and chemists working on the assemblies of organic molecules on crystal surfaces."
Berlin: Springer, 2012
e20406044
eBooks  Universitas Indonesia Library
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Sonnet, Andre M.
"This is a book on the dissipative dynamics of ordered fluids, with a particular focus on liquid crystals. It covers a whole range of different theories, mainly concerned with nematic liquid crystals in both their chiral and nonchiral variants. The authors
begin by giving a detailed account of the molecular origins of orientational order in fluids. They then go on to develop a general framework in which continuum theories for ordered fluids can be phrased."
New York: [, Springer], 2012
e20418907
eBooks  Universitas Indonesia Library
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Wim H. de Jeu
"This book about preparation of liquid crystalline elastomers, applications of liquid crystalline elastomers, liquid crystal elastomers and light, electro-opto-mechanical effects in swollen nematic elastomers, the isotropic-to-nematic conversion in liquid crystalline elastomers, and order and disorder in liquid-cystalline elastomers."
Berlin: Springer, 2012
e20405912
eBooks  Universitas Indonesia Library
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Ulman, Abraham
Boston: Academic Press, 1991
530.417 ULM i
Buku Teks SO  Universitas Indonesia Library
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Kopp, Hermann
"Published in 1882, Aus der molecular-welt (From the molecular world) portrayed the intimate details of what might actually be happening in the sub-microscopic world, the atoms and molecules. Filled with appealing tropes, humor, and whimsical asides, Kopp’s short book provided an examination of the chemistry and physics of his day that was always light-hearted on the surface, but often surprisingly profound. The book provides a revealing tour of nineteenth-century debates concerning chemical theory. "
Heidelberg : Springer, 2012
e20405868
eBooks  Universitas Indonesia Library
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Snyder, Lloyd R.
New York : John Wiley & Sons, 1979
543.8 SNY i
Buku Teks SO  Universitas Indonesia Library
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Wisnu Wardana
"Minyak sawit kasar mengandung tokoferol dan tokotrienol yang merupakan senyawa dari vitamin E. Proses pemurnian minyak sawit menyebabkan tokoferol dan tokotrienol menghilang. Vitamin E berfungsi sebagai antioksidan dan dapat menjadi produk samping industri sawit. Isomer dari tokoferol yang mempunyai aktivitas terbesar adalah α-tokoferol. Salah satu cara pemisahan α-tokoferol dari minyak sawit kasar adalah dengan ekstraksi cair-cair. Penelitian ini dilakukan untuk mendapatkan data kesetimbangan cair-cair sistem minyak sawit kasar + α-tokoferol + isopropanol serta melihat kinerja pelarut yang dipilih sehingga akan berguna untuk perancangan alat ekstraksi. Metode yang digunakan adalah mencampur dan mengendapkan larutan hingga mencapai keadaan yang setimbang kemudian dianalisis fraksi massa tiap komponen pada fase ekstrak dan rafinat untuk rasio massa pelarut yang berbeda-beda. Pada penelitian ini didapat data kesetimbangan cair-cair pada rasio massa minyak sawit kasar dibanding isopropanol sebesar 1:0,2; 1;0,4; dan 1:0,6. Kinerja pelarut isopropanol rendah sebab koefisien distribusi dari α-tokoferol yang terbesar yaitu 0,85 dan selektivitas pelarut yang terbesar yaitu 0,89 bernilai kurang dari 1. Ekstraksi cair-cair secara langsung untuk memisahkan α-tokoferol dari minyak sawit kasar sulit dilakukan karena banyaknya fraksi cair minyak sawit yang ada pada fase ekstrak.

Crude palm oil contains tocopherols and tocotrienols which are the main compounds of vitamin E. In palm oil refining process tocopherols and tocotrienols is removed. The function of vitamin E is as an antioxidant and can be makes as side product of palm oil industry. Isomer of tocopherol that has the greatest activity is α-tocopherol. Liquid-liquid extraction is one of separation method that can be used for separation of α-tocopherol from crude palm oil. This study was conducted to obtain liquid-liquid equilibrium data for system of crude palm oil + α-tocopherol + isopropanol and to identificate performance of the selected solvent so it can be use for extractor design. The method used is mixing and settling the solution until it reach equilibrium state then analyzed the mass fraction of each component in extract and rafinat phase for different mass ratio of solvent. The liquid-liquid equilibrium data obtained is in mass ratio of crude palm oil to isopropanol at 1:0.2; 1:0.4; and 1:0.6. The performance of isopropanol is poor because the largest distribution coefficient of α-tocopherol is 0.85 and the largest solvent selectivity is 0.89 still below than unity. Using liquid-liquid extraction to directly separating α-tocopherol from crude palm oil is hard to do because a lot of liquid fraction of palm oil in extract phase."
Depok: Fakultas Teknik Universitas Indonesia, 2013
S47291
UI - Skripsi Membership  Universitas Indonesia Library
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Fleming, Ian
New York: John Wiley & Sons, ", 1976
541.28 FLE f
Buku Teks SO  Universitas Indonesia Library
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