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  • 1
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    Degradation mechanism of small molecule-based organic light-emitting devices (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-03-19
    Description: Studies on the long-term degradation of organic light-emitting devices (OLEDs) based on tris(8-hydroxyquinoline) aluminum (AlQ3), the most widely used electroluminescent molecule, reveal that injection of holes in AlQ3 is the main cause of device degradation. The transport of holes into AlQ3 caused a decrease in its fluorescence quantum efficiency, thus showing that cationic AlQ3 species are unstable and that their degradation products are fluorescence quenchers. These findings explain the success of different approaches to stabilizing OLEDs, such as doping of the hole transport layer, introducing a buffer layer at the hole-injecting contact, and using mixed emitting layers of hole and electron transporting molecules.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aziz -- Popovic -- Hu -- Hor -- Xu -- New York, N.Y. -- Science. 1999 Mar 19;283(5409):1900-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario, Canada. Xerox Research Centre of Canada, Mississauga, Ontario, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10082460" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Physical waters suitability for floating net cages cultivation mapping using landsat 8 oli and worldview-2 imageries in part of Hurun Bay, Lampung Province, Indonesia (2018)
    Institute of Physics (IOP)
    Details
    Publication Date: 2018-08-01
    Description: Marine aquaculture has become an important contribution in sustainable world food provision. Sumatra, Indonesia contribute significantly on marine aqua production through intensive floating net cages development which has been long become a source of marine products in domestic and international markets. However, less research conducted on the water quality suitability in this region due to its vast areas and costly water analysis. This research aims: 1) to identify the appropriate spatial resolution between Landsat 8 OLI and Worldview-2 imageries to obtain the chlorophyll-α parameter and total suspended solid data; and 2) to perform spatial analysis to determine the suitable area for floating net cages using remote sensing and GIS for decreasing the analysis cost. The research area is located in Hurun Bay, the southwestern part of Lampung Bay. Biophysical factors considered for the suitability of floating net cages are: water clarity, temperature, salinity, pH, water depth, tot...
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
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  • 3
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    Effect of Adding Activated Carbon of Palm Kernel Shell on Carbon Papers as Electrochemical Double Layer Capacitors (2018)
    Institute of Physics (IOP)
    Details
    Publication Date: 2018-12-20
    Description: The activated carbon from palm kernel shell has been activated using NaOH at 400 °C. The activated carbon sample has been characterized using FT-IR spectroscopy, X-ray diffraction and scanning electron microscopy techniques to be used as carbon electrodes in Electrochemical Double Layer Capacitors (EDLC). Addition of activated carbon of palm kernel shell with 45 μm particle size on carbon paper as electrode at EDLC with mass ratio between carbon paper and activated carbon of palm kernell shell 1: 4, plate surface area 3 x 11 cm 2 , concentration of electrolyte solution of H 3 PO 4 is 0,6 N and charge time of 30 minutes can improve EDLC ability to store charge up to 387.14 μF and conductivity values of 52.2811x10 −5 , Ω −1 cm −1 .The desired capacitive performance of waste from palm kernel shells can be a source of carbon material biomass for high performance EDLC and low-cost energy storage devices.
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
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  • 4
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    Angiotensin II type 2 receptor signaling attenuates aortic aneurysm in mice through ERK antagonism (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-04-16
    Description: Angiotensin II (AngII) mediates progression of aortic aneurysm, but the relative contribution of its type 1 (AT1) and type 2 (AT2) receptors remains unknown. We show that loss of AT2 expression accelerates the aberrant growth and rupture of the aorta in a mouse model of Marfan syndrome (MFS). The selective AT1 receptor blocker (ARB) losartan abrogated aneurysm progression in the mice; full protection required intact AT2 signaling. The angiotensin-converting enzyme inhibitor (ACEi) enalapril, which limits signaling through both receptors, was less effective. Both drugs attenuated canonical transforming growth factor-beta (TGFbeta) signaling in the aorta, but losartan uniquely inhibited TGFbeta-mediated activation of extracellular signal-regulated kinase (ERK), by allowing continued signaling through AT2. These data highlight the protective nature of AT2 signaling and potentially inform the choice of therapies in MFS and related disorders.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3097422/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3097422/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Habashi, Jennifer P -- Doyle, Jefferson J -- Holm, Tammy M -- Aziz, Hamza -- Schoenhoff, Florian -- Bedja, Djahida -- Chen, YiChun -- Modiri, Alexandra N -- Judge, Daniel P -- Dietz, Harry C -- P01 AR049698/AR/NIAMS NIH HHS/ -- P01 AR049698-07/AR/NIAMS NIH HHS/ -- R01 AR041135/AR/NIAMS NIH HHS/ -- R01 AR041135-17/AR/NIAMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2011 Apr 15;332(6027):361-5. doi: 10.1126/science.1192152.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21493863" target="_blank"〉PubMed〈/a〉
    Keywords: Angiotensin II/metabolism ; Angiotensin II Type 1 Receptor Blockers/pharmacology/therapeutic use ; Angiotensin-Converting Enzyme Inhibitors/pharmacology/therapeutic use ; Animals ; Aorta ; Aortic Aneurysm/drug therapy/*metabolism/pathology/prevention & control ; Aortic Rupture/metabolism/pathology/prevention & control ; Disease Models, Animal ; Disease Progression ; Enalapril/pharmacology/therapeutic use ; Losartan/pharmacology/therapeutic use ; MAP Kinase Signaling System ; Marfan Syndrome/drug therapy/*metabolism/pathology ; Mice ; Mice, Knockout ; Mitogen-Activated Protein Kinase 1/*antagonists & inhibitors/metabolism ; Mitogen-Activated Protein Kinase 3/*antagonists & inhibitors/metabolism ; Receptor, Angiotensin, Type 2/genetics/*metabolism ; *Signal Transduction ; Transforming Growth Factor beta/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    The Study of Blocking Agent on Lengkeng ( Euphoria Logan Lour) Fruit Shell and Seed for Adsorption of Pb (II) from Aqueous Solution (2018)
    Institute of Physics (IOP)
    Details
    Publication Date: 2018-04-21
    Description: The study focuses on the roles played by mayor functional groups(carboxyl) in the lengkeng shell for sorption of Pb (II). The biosorbent was characterized by FTIR and elemental analyses. The parameters such as pH, initial concentration, particle sizes, adsorbent dose and flow rate were also studied. The results showed that the optimum condition was at pH = 3, concentration 400 mg/l, 250 μm particle sizes, adsorbent dose 0,5 g and 2 ml/min flow rate with adsorption capacity 4,8933 mg/g(shell) and 5,2720 mg/g(seed). It is show that ion exchange play as a more important role in the sorption of Pb (II) on lengkeng shell and seed. Blocking of COOH groups by chemical esterification resulted in Pb important reduction in metal binding.The result showed that adsorption capacity of lengkeng shell uncreases until 63.67 % and lengkeng seed uncreases 98.70%.
    Print ISSN: 1757-8981
    Electronic ISSN: 1757-899X
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Institute of Physics (IOP)
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  • 6
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    Utilization of porous carbon from waste palm kernel shells on carbon paper as a supercapacitors electrode material (2017)
    Institute of Physics (IOP)
    Details
    Publication Date: 2017-06-03
    Description: A porous carbon prepared from waste palm kernel shells has been applied as a new supercapacitor electrode material. Activated carbon was synthesized through a carbonization process at a temperature of 400 °C which has a particle size of 90 urn and provide a surface area of 301.482 m 2 g -1 . Carbon from waste palm kernel shells was distributed on a sheet of carbon paper surface with a variation of carbon paper and palm kernel shells carbon mass ratio. From the results reported that the capacitance value was increased to 1331.8 uF in rolling method with addition of carbon palm shells mass have higher capacitance values than which was obtained in plate or sandwich method.
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
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  • 7
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    Correlation of the Processing Parameters in the Formation of Granulated Ground Blast Furnace Slag Geopolymer (2017)
    Institute of Physics (IOP)
    Details
    Publication Date: 2017-06-28
    Description: Geopolymers are inorganic materials with huge potential applications including building material, fire resistant materials, and agricultural construction materials. Various parameters influenced the final properties of these geopolymer concretes. This study developed the effects of several factors such as solid-to-liquid ratio, NaOH concentration, and Na2SiO3/NaOH ratio on the compressive strength of granulated ground blast furnace slag (GGBFS) by statistical design of experiment (DOE) approach. Analysis of the experimental results through ANOVA exhibited that the specimen with NaOH concentration of 10M, Na2SiO3/NaOH ratio equals to 2.5, and solid-to-liquid ratio of 3.0 curing at room temperatures for 28 days was potential of highest strength (168.705 MPa) in the considered procedure. Besides, the relationship between compressive strength and influential factors could be suitably by fraction factorial design method.
    Print ISSN: 1757-8981
    Electronic ISSN: 1757-899X
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 8
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    The Application of Active Paper Incorporated with Oleoresin of Cinnamon Leaf ( Cinnamomum burmanii ) Distillation Residues on Maintaining Dragon Fruits ( Hylocereus costaricensis ) Quality during Storage (2018)
    Institute of Physics (IOP)
    Details
    Publication Date: 2018-04-06
    Description: The purpose of this study was to determine the effect of active paper placement methods on super red dragon fruits quality during storage at ambient temperature. The active papers were incorporated with oleoresin of cinnamon leaf distillation residues. Various active paper placement methods were applied such as wrapping, placed on the cardboard wall, placed cardboard pad, and scrap of paper on the sidelines. Weight loss, peel color, surface and flesh hardness, total titratable acid, soluble solid total, pH flesh fruit, and total plate count (TPC) of super red dragon fruits samples were investigated during 9 days storage. The result shows that active paper placement methods significantly affected the weight loss, surface firmness and color peel change of super red dragon fruits samples. However, active paper placement methods insignificantly affected the titrable acid total, soluble solid total, pH, flesh firmness and microbial spoilage of super red dragon fruits samples. The bes...
    Print ISSN: 1757-8981
    Electronic ISSN: 1757-899X
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 9
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    Mechanism of secreted protein homeostasis [Medical Sciences] (2015)
    National Academy of Sciences
    Details
    Publication Date: 2015-11-04
    Description: The composition and functions of the secreted proteome are controlled by the life spans of different proteins. However, unlike intracellular protein fate, intrinsic factors determining secreted protein aging and turnover have not been identified and characterized. Almost all secreted proteins are posttranslationally modified with the covalent attachment of N-glycans. We...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 10
    Electronic Resource
    Electronic Resource
    Liquid chromatographic retention behavior of organometallic compounds and ligands with amine-, octadecylsilica- and β-cyclodextrin-bonded phase columns
    Amsterdam : Elsevier
    Journal of Chromatography A 347 (1985), S. 51-60 
    Details
    ISSN: 0021-9673
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0021-9673(01)95468-8
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    Paper (German National Licenses)
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