130 research outputs found
Origins of hydrocarbons in the Sagara oil field, central Japan
No full textWe collected free-gas and in situ fluid samples up to a depth of 200.6 m from the Sagara oil field, central Japan (34°44′N, 138°15′E), during the Sagara Drilling Program (SDP) and measured the concentrations and stable carbon isotopic compositions of CH4 and C2H6 in the samples. A combination of the CH4/C2H6 ratios with the carbon isotope ratios of methane indicates that the hydrocarbon gases are predominantly of thermogenic origin at all depths. The isotope signature of hydrocarbon gases of δ13CCH4 < δ13CC2H6 suggests that these gases in the Sagara oil field are not generated by polymerization, but by the decomposition of organic materials
Cyclophane-Based Fluorescence Tuning Induced by Hydrostatic Pressure Changes
No full textIn contrast to a standard steady fluorescence intensity increase of a chloroform solution of a linear chromophore unit under high pressure, a fluorescent cyclophane solution shows significant fluorescence quenching under elevated pressure. A pressure-induced enhancement of the formation of an intramolecular pi-stacked conformation is proposed to be responsible
සිදත් සඟරාවේ ලිංග භේදය පිළිබඳ විමර්ශනාත්මක අධ්යයනයක්
No full textThe only book currently available to learn Sinhala grammar is Sidath Sagara. This was written in the thirteenth century. Sidath Sagara talks about gender, only two genders as masculine and feminine nouns. Although Sidath Sagara says that there are two genders, according to the Sinhala practice, three genders are implemented. The third gender is the neuter gender. Sinhala gender has been introduced after paying attention to the gender difference in Pali and Sanskrit languages. Understand gender discrimination in Sidath Sagara without knowledge of Pali and Sanskrit languages. This is a problematic situation. Because of this, scholars refuse to explain the gender of the Sidath Sagara. Some people justify sidath Sagara's gender bias. This research was carried out in order to properly investigate Sidath Sagarava's gender examination and arrive at conclusions. why neuter gender is not valid in Sinhala in Sidath Sagarava's gender examination? is kept as the research problem. The main objective of the research was to study gender discrimination in Sidath Sagara. Studying the various ideologies that have been presented regarding gender discrimination, Sidath Sagara's research on gender and reaching balanced conclusions began. Sidath Sagara was kept as the primary source. Various editions of Sidath Sagara, Sinhala grammar books and Journals written in this regard, newspaper articles etc. were the secondary sources by studying the gender difference in Sidath Sagara and grammar tradition of Sinhala, it was kept as the basis of the research that the existing problems regarding gender discrimination in Sidath Sagara will be resolved. the research sample was only for the work of Sidath Sagara and Sinhala grammar tradition. From the data analysis of the research 1. Gender distiction as discrimination in Sidath Sagara is a gender discrimination used for poetry 2. the author of Sidath Sagara explains focusing on the gender distinction in Pali and Sanskrit languages and not focusing on the Sinhala language. 3. it is uncinded the three conclusions that Sidath Sagara's gender distinction is a traditional Sinhala grammatical tradition
Mechanoresponsive luminescence and liquid-crystalline behaviour of a cyclophane featuring two 1,6-bis(phenylethynyl)pyrene groups
No full textCyclophanes have been attractive targets over recent decades because of their fascinating molecular structures and inherent ability to act as supramolecular hosts. However, cyclophanes that exhibit stimuli-responsive luminescence in their condensed states are still very rare, although luminescent cyclophanes could be suitable platforms for sophisticated photofunctional molecular assembled materials. We here report that a pyrenophane featuring two p-extended pyrene groups exhibits mechanoresponsive luminescence in the solid states and shows a nematic liquid-crystalline phase at elevated temperature. Two 1,6-bis(phenylethynyl)pyrene moieties form intramolecular excimers in a diluted chloroform solution, whereas no clear intra-and/or intermolecular excimer formation was observed for the solid state accessed through slow cooling from the nematic phase. Photoluminescence spectroscopic measurements, emission lifetime measurements, and X-ray diffraction patterns confirmed that mechanical stimuli result in conversion to much less ordered molecular assembled states in which some luminophores form excimers, leading to changes in photoluminescence colours
Inside Cover: Brightly Tricolored Mechanochromic Luminescence from a Single-Luminophore Liquid Crystal: Reversible Writing and Erasing of Images (Angew. Chem. Int. Ed. 39/2011)
No full textStimuli‐Responsive Luminescent Liquid Crystals: Change of Photoluminescent Colors Triggered by a Shear‐Induced Phase Transition
No full textA mechanical and thermal responsive luminescent liquid crystal forming a colourless film under room light
No full textInnentitelbild: Brightly Tricolored Mechanochromic Luminescence from a Single-Luminophore Liquid Crystal: Reversible Writing and Erasing of Images (Angew. Chem. 39/2011)
No full text
Brightly Tricolored Mechanochromic Luminescence from a Single-Luminophore Liquid Crystal: Reversible Writing and Erasing of Images
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