92 research outputs found
Perkawinan Sesama Marga Parna di Kabupaten Simalungun
Full text linkThe Batak tribe is known for its large number of clans, reaching hundreds spread throughout the world and each group has its own characteristics. Among them is the Parsadaan Naiambaton (Parna) clan group, this Batak clan group is known to still uphold the oath of their ancestors not to engage in blood marriages. But the author still finds people who violate this oath, this is the reason why this thesis is important so that the current generation understands and appreciates the meaning of Bhinneka Tunggal Ika, then Parna descendants understand and implement Tona Ni Raja Nai Ambaton and every young generation who are descendants of Raja Nai Ambaton knows even though Many of the clans belonging to Parna from various Batak tribes are brothers. Where the purpose of writing this title is to describe marriages between the Parna clan in Simalungun Regency and how the community and Pomparan ni Raja Nai Ambaton perceive marriages between the Parna clan.
The method used in this research is qualitative research and the data used in writing this thesis was obtained from in-depth observations and interviews. From the research results, this has happened in several areas in Simalungun Regency, but this is strongly opposed by the community, especially Pomparan ni Raja Nai Ambaton, because this is contrary to the philosophy of the Atak Dalihan na Tolu and Tona ni Raja Nai Ambaton which states that fellow Parna clans are naso boi marsiolian/marhajabuan
Where the marriage between Parna will destroy the kinship system among the Parna clan, which will result in them not having rights in customs and being excluded from the Parna community, so it is really necessary for the younger generation with young surnames to understand what clans are included in the Parna.104 HalamanSkripsi Sarjan
Methyl 4-(1H-benzimidazol-2-yl)benzoate trihydrate
No full textThe title compound, C15H12N2O2·3H2O, has been prepared from the reaction of a Schiff base of benzene-1,2-diamine and iron perchlorate at room temperature. The dihedral angle between the benzimidazole ring and the 4-substituted benzene ring is 0.47 (3)°. Hydrogen bonding involving water molecules, imidazole N, imidazole imine H and ester O atoms stabilizes the crystal structure
Chemically induced cyclometalation of 2-(arylazo)phenols. Synthesis, characterization, and redox properties of a family of organoosmium complexes
No full textReaction of 2-(arylazo)phenols (H2ap-R; R = OCH3, CH3, H, Cl, and NO2) with [Os(PPh3)2(CO)2(HCOO)2] affords a family of organometallic complexes of osmium(II) of type [Os(PPh3)2(CO)(ap-R)] where the2-(arylazo)phenolate ligand is coordinated to the metal center as a tridentate C,N,O-donor. Structure of the [Os(PPh3)2(CO)(ap-H)] complex has been determined by X-ray crystallography. All the [Os(PPh3)2(CO)(ap-R)] complexes are diamagnetic and show characteristic 1H NMR signals and intense MLCT transitions in the visible region. They also show emission in the visible region at ambient temperature. Cyclic voltammetry on the [Os(PPh3)2(CO)(ap-R)] complexes shows a reversible Os(II)-Os(III) oxidation within 0.39-0.73 V vs SCE, followed by a reversible Os(III)-Os(IV) oxidation within 1.06-1.61 V vs SCE. Coulometric oxidation of the [Os(PPh3)2(CO)(ap-R)] complexes generates the [OsIII(PPh3)2(CO)(ap-R)]+ complexes, which have been isolated as the hexafluorophosphate salts. The [OsIII(PPh3)2(CO)(ap -R)]PF6 complexes are one-electron paramagnetic and show axial ESR spectra. In solution they behave as 1¦1 electrolytes and show intense LMCT transitions in the visible region.The [OsIII(PPh3)2(CO)(ap-R)]PF6 complexes have been observed to serve as mild one-electron oxidants in a nonaqueous medium
Bis{μ-(E)-methyl 4-[(2-carbamothioylhydrazinylidene)methyl]benzoate-κ2S:S}bis[iodido(triphenylphosphane-κP)copper(I)]
No full textThe title complex, [Cu2I2(C10H11N3O2S)2(C18H15P)2], is a centrosymmetric sulfur-bridged dimer of CuI with PPh3 and iodine. The CuI atom shows a distorted tetrahedral geometry, with bite angles ranging from 98.61 (2) to 120.16 (3)°. The intramolecular Cu...Cu distance is 2.8228 (12) Å. The thiosemicarbazone ligand is coordinated only through the S atom. In the crystal, the complex molecules are linked via intermolecular N—H...O hydrogen bonds, resulting in a hydrogen-bonded chain along the b axis
Red-emitting cyclometalated platinum(II) complexes with imidazolyl phenanthrolines: Synthesis and photophysical properties
No full textEfficiency of photoinduced electron transfer in mono- and di-nuclear iridium complexes: a comparative study
No full textPhotoinduced electron transfer in mono- and dinuclear Ir(iii) complexes is dominated by the mononuclear as compared to the dinuclear complex.</p
Implementation of a New Bank Erosion Model in Delft3D
No full textBank erosion plays an important role in the hydro-morphodynamics and evolution of natural rivers. Therefore, it is essential to have a reliable bank erosion model for accurate simulation of hydro-morphodynamic processes. We developed and successfully implemented a new, feasible bank erosion model in Delft3D software. The developed model considers physical bank erosion processes to a greater extent than previous models. Model performance was assessed by comparison with a previously reported experiment in a mobile-bed-and-bank laboratory open-channel bend flume. The results from our developed model were compared with those from the standard Delft3D and angle of repose bank erosion models. We showed that progressive lateral bank erosion as well as the corresponding hydro-morphodynamics of the channel were better predicted by the developed bank erosion model. The results of this study provide insight into bank erosion prediction with Delft3D, and they suggest that the developed model will improve the performance of the Delft3D model for short- and long-term hydro-morphodynamic simulation of natural meandering rivers.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Rivers, Ports, Waterways and Dredging Engineerin
Systematic Conversion of Photoinduced Intramolecular Electron Transfer in Trinuclear M‑Ir‑M (M = Re, Ir) Complexes to Intersystem Charge Transfer by Coupling to Gold Nanoclusters
No full textTwo
trinuclear cyclometalated iridium(III)-based complexes of M-Ir-M
(M = Re, Ir) type were strategically designed with characteristically
different electron distributions based on the electronegativities
of Re and Ir. Photoinduced intramolecular electron transfer (PIIET)
is readily observed in these complexes with different lifetimes of
the radicals. The free amine ends of these symmetric complexes act
as the electron donor for PIIET. These ends, on the other hand, can
also act as centers for reducing gold (Au) salt (HAuCl4·3H2O) to generate Au atomistic nanoclusters (AuNCs)
protected and templated by the trinuclear complexes. Formation of
the AuNCs completely stops the PIIET and induces excited state intersystem
charge transfer (ESICT) from the surrounding complexes to the AuNC
core on exciting the system with radiation of the same wavelength.
The trinuclear cyclometalated complexes were synthesized by chelation
of the transition metal units, such as Re(CO)3Cl and Ir(ppy)2, to thiosemicarbazone (TSC) appended with cyclometalated
ligands of the precursor Ir(III) complex. Such a phenomenon of conversion
of PIIET in a trinuclear cyclometalated coordination complex completely
to ESICT on coupling to a noble metal nanocluster is unique and promising
for applications in energy devices
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