188,776 research outputs found
Pengurusan seni arca Raja Shahriman di galeri Pelita Hati, Bangsar, Kuala Lumpur
No full textThis researched is to identify, examine and analyze the management methods conducted by Galeri Pelita Hati, at Bangsar for sculpture produced by Raja Shahriman. The objective of this researched to determine the types and techniques of sculpture, examine the management Raja Shahriman works, and also analyze the themes and images that often made an issue that Raja Shahriman to do. This researched uses the Classical Henri Fayol Management Theory popularized by Gerald Cole in the book Management Theory and Practice. This researched was carried out through qualitative methods of interviews with the gallery and sculptor Raja Shahriman and make observation about the process of making sculpture. The findings of this researched is management theory that forms on Henri Fayol's has relation between researchers, artists, enthusiasts and management as a compilation of all the parties involved thought unite in the form of sculpture works
BENTUK DAN RAGAM HIAS NISAN RAJA-RAJA TANETEDI KABUPATEN BARRU
No full textYUSTIKA R. Bentuk dan Ragam Hias Nisan Raja-raja Tanete di Kabupaten Barru (dibimbing oleh Dr. Rosmawati, S.S.,M.Si dan Dr. Khadijah Thahir Muda, M.Si ) Penelitian ini bertujuan untuk menjelaskan bentuk dan ragam hias nisan pada empat Kompleks Makam Raja Tanete di Kabupaten Barru, dijelaskan pula bagaimana pengaruh asing dapat mempengaruhi bentuk dan ragam hias nisan makam Raja-Raja Tanete di Kabupaten Barru. Semua itu bertujuan untuk mengetahui bentuk dan ragam hias makam raja-raja Tanete di Kabupaten Barru dan bagaimana pengaruh asing mempengaruhi bentuk dan ragam hias nisannya. Penelitian ini menggunakan metode kualitatif berupa deskripsi mendalam terhadap bentuk dan ragam hias nisan Raja-Raja Tanete yang ada di Kabupaten Barru. Prosedurnya meliputi tahapan pengumpukan data pustaka, pengumpulan data lapangan, pengolahan data, dan analisis serta penafsiran data. Hasil penelitian ini menunjukkan bahwa bentuk dan ragam hias nisan yang ada pada keempat kompleks makam Raja Tanete memiliki beberapa tipe nisan yang berbeda dan ragam hias yang beragam. Perbedaan tersebut membuktikan bahwa Kerajaan Tanete tidak hanya mendapat pengaruh lokal namun juga dipengaruhi oleh kebudayaan dari luar seperti kebudayaan Arab, Melayu, Tionghoa dan Mandar. Kata Kunci : Bentuk, Nisan, Ragam Hias, Kebudayaan.xvi + 98. hlm
<i>Raja</i> Linnaeus 1758
No full textIdentification guide to Raja (rays), and the geographical distribution of that species. Produced by R. S. Clark, 1931. Includes 1 figure.</p
<i>Raja radiata</i> (Donovan 1806)
No full textIdentification guide to Raja radiata (shagreen ray), and the geographical distribution of that species. Produced by R. S. Clark, 1929. Includes 3 figures
(1)<i> Raja fullonica</i> (Linnaeus 1758)
No full textIdentification guide to Raja fullonica (shagreen ray), and the geographical distribution of that species. Produced by R. S. Clark, 1930. Includes 4 figures.</p
Analisis Partisipasi Masyarakat dalam Kepemilikan Akta Kelahiran di Kecamatan Perhentian Raja Kabupaten Kampar Tahun 2014-2015
No full textPerhentian Raja sub-district with a population of 21 091 inhabitants only 1,371 souls who already have birth certificates and as many as 15 253 inhabitants who do not have birth certificates. Only 8.25% of people who have a birth certificate, so it can be said public awareness of the birth certificate of ownership in the District Perhentian Raja is very low when compared to the sub-districts of lainnyan in Kampar regency.This study aims to determine the level of participation and barriers to community participation in Possession of birth certificates in the District Perhentian Raja Kampar Regency Year 2014-2015.This study uses qualitative research methods with descriptive research, which can be interpreted as troubleshooting processes are investigated with described the state of the research subjects were based on the facts that appear during the study were then followed by the popularity of existing theories. Based on the survey results revealed the level of community participation in performing the maintenance of a birth certificate in the District Perhentian Raja is still low, it is not appropriate to the number of births per year. Where the average annual community maintains birth certificates 15% of the birth rate. While the internal constraints of society itself and also external constraints that come from neighborhoods and local governments
Catalytic significance of organometallic compounds immobilized on mesoporous silica: economically and environmentally important examples
No full textBecause of the availability of well-defined nanoporous silicas, possessing (controllable) pore diameters of 30 Å to ca. 500 Å, bulky organometallic species may be readily introduced on to the inner walls of these thermally stable, solid supports. Four kinds of highly active catalysts that may be derived from the combination of these two materials are illustrated. First, starting from titanocene dichloride, single-site TiIV-centered epoxidation catalysts of exceptional activity may be formed. These are now used in the preparation of epoxy polymers and other products from naturally occurring methyl esters of fatty acids, a novel example of sustainable development. Second, asymmetric organometallic species that exhibit good enantioselectivity as homogeneous catalysts (in the hydrogenation of keto-esters, for example) may be significantly improved in their catalytic performance when they are anchored to a concave silica surface, their ee values are boosted by the spatial restrictions imposed by the mesopores within which they are anchored. Examples of three distinct diamino-complexes of Rh(I) are illustrated for the selective hydrogenations of methylbenzoylformate and E-?-phenylcinnamic acid. In the third kind of catalyst immobilized on nanoporous silica, several mixed-metal carbonylates are used as precursors. They are firmly anchored to the inner walls and may, by gentle calcining, be converted to bimetallic catalysts [e.g., Ru6Pd6, Ru5Pt and Ru10Pt2] that exhibit very high activity, under mild conditions, in the single-step, solvent-free hydrogenation of a range of economically important unsaturated compounds. The fourth category of immobilized, organometallics illustrated here is of the "ship-in-bottle" kind, where, typically, a chlorinated copper-phthalocyanine incarcerated within the cages of zeolite-X efficiently converts methane to methanol and also smoothly oxyhalogenates a range of aromatic compounds (e.g., benzene, phenol, toluene, aniline, anisole and resorcinol) in air, again under mild conditions. The unconventional techniques, both in situ and ex situ, required to characterize all these immobilized catalysts are outlined
Exploiting nanospace for asymmetric catalysis: Confinement of immobilized, single-site chiral catalysts enhances enantioselectivity
No full textIn the mid-1990s, it became possible to prepare high-area silicas having pore diameters controllably adjustable in the range ca. 20?200 Å. Moreover, the inner walls of these nanoporous solids could be functionalized to yield single-site, chiral, catalytically active organometallic centers, the precise structures of which could be determined using in situ X-ray absorption and FTIR and multinuclear magic angle spinning (MAS) NMR spectroscopy. This approach opened up the prospect of performing heterogeneous enantioselective conversions in a novel manner, under the spatial restrictions imposed by the nanocavities within which the reactions occur. In particular, it suggested an alternative method for preparing pharmaceutically and agrochemically useful asymmetric products by capitalizing on the notion, initially tentatively perceived, that spatial confinement of prochiral reactants (and transition states formed at the chiral active center) would provide an altogether new method of boosting the enantioselectivity of the anchored chiral catalyst. Initially, we anchored chiral single-site heterogeneous catalysts to nanopores covalently via a ligand attached to Pd(II) or Rh(I) centers. Later, we employed a more convenient and cheaper electrostatic method, relying in part on strong hydrogen bonding. This Account provides many examples of these processes, encompassing hydrogenations, oxidations, and aminations. Of particular note is the facile synthesis from methyl benzoylformate of methyl mandelate, which is a precursor in the synthesis of pemoline, a stimulant of the central nervous system; our procedure offers several viable methods for reducing ketocarboxylic acids. In addition to relying on earlier (synchrotron-based) in situ techniques for characterizing catalysts, we have constructed experimental procedures involving robotically controlled catalytic reactors that allow the kinetics of conversion and enantioselectivity to be monitored continually, and we have access to sophisticated, high-sensitivity chiral chromatographic facilities and automated high-throughput combinatorial test rigs so as to optimize the reaction conditions (e.g., H2 pressure, temperature, time on-stream, pH, and choice of ligand and central metal ion) for high enantioselectivity. This Account reports our discoveries of selective hydrogenations and aminations of synthetic, pharmaceutical, and biological significance, and the findings of other researchers who have achieved similar success in oxidations, dehydrations, cyclopropanations, and hydroformylations. Although the practical advantages and broad general principles governing the enhancement of enantioselectivity through spatial confinement are clear, we require a deeper theoretical understanding of the details pertaining to the phenomenology involved, particularly through molecular dynamics simulations. Ample scope exists for the general exploitation of nanospace in asymmetric hydrogenations with transition metal complexes and for its deployment for the formation of C?N, C?C, C?O, C?S, and other bonds
Catalytically active centres in porous oxides: design and performance of highly selective new catalysts
No full textActive centres have been designed on high-area, molecular sieve catalysts which, inter alia, can convert n-alkanes to n-alkanols and n-alkanoic acids, cyclohexane to cyclohexanol, cyclohexanone and adipic acid, and n-hexane to adipic acid all using either oxygen or air as oxidants. A number of one-step processes and solvent-free chemical conversions, of paramount importance in the development of clean technology, are also described with catalysts designed (i) to oxidise p-xylene to terephthalic acid aerobically, (ii) to effect Baeyer–Villiger reactions with oxygen, and (iii) for the conversion of cyclohexanone to ?-caprolactam under mild conditions. The inner surfaces of mesoporous silicas may also be atomically engineered so as to yield high-performance epoxidation of alkenes at TiIV-centred active sites, as well as enantioselective hydrogenations of organic species using constrained chiral catalysts
Nanoporous solids as receptacles and catalysts for unusual conversions of organic compounds
No full textSolid-state chemical principles, allied to a degree of chemical intuition, enables one to design open-structure solids on to the inner surfaces of which isolated catalytically active sites of different kinds may be placed. With such solids, which act simultaneously both as permeable catalysts and reaction vessels, a number of highly desirable chemical conversions—many of paramount importance in the context of “green” chemistry and clean technology—may be smoothly effected under environmentally benign conditions. Typical examples, illustrated here, include the selective oxidation of toluene to benzaldehyde, current methods of producing alcohols, aldehydes and acids, and the synthesis of -caprolactam in a by-product-free manner. Such open-structure solids, which house single-site active centres, are also readily amenable to detailed and precise structural elucidation.<br/
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