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  • Books  (74)
  • Articles  (128,499)
  • 2015-2019  (128,573)
  • 2017  (128,573)
  • Geosciences  (114,535)
  • Architecture, Civil Engineering, Surveying  (21,435)
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  • Books  (74)
  • Articles  (128,499)
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  • 2015-2019  (128,573)
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  • 1
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    Bürgerschaftliches Engagement, Koproduktion und das Leitbild gleichwertiger Lebensbedingungen (2017)
    De Gruyter
    Details
    Publication Date: 2017-12-31
    Description: ZusammenfassungDurch die Förderung ehrenamtlichen Engagements in der Bereitstellung von Daseinsvorsorgeinfrastruktur zeigt sich ein Raumdilemma: Die Mehrzahl der Engagierten findet sich in eher gut situierten Regionen, die von einer staatlichen Förderung des Ehrenamts im Gegensatz zu strukturschwachen Regionen profitieren. Im Beitrag wird dieses Raumdilemma empirisch bestätigt. Dazu wurden Initiativen bürgerschaftlichen Engagements, die sich an der Koproduktion von Daseinsvorsorgeinfrastruktur beteiligen, nach ihrer Lage im Raum ausgewertet. Dieser Zusammenhang kann negative Auswirkungen auf das Ziel gleichwertiger regionaler Lebensbedingungen haben. Das bedeutet jedoch keineswegs, dass Engagement und Koproduktion nicht auch in strukturschwächeren Regionen begünstigt werden kann. Dies zeigen in Fallstudien ermittelte Erfolgs- und Aktivierungsfaktoren, die im Beitrag diskutiert werden. Daher sollte nicht auf die Inwertsetzung des zivilgesellschaftlichen Engagements in der Regionalentwicklung verzichtet werden, weil alle Regionen – sowohl die schwachen als auch die starken Regionen – davon profitieren. Der Beitrag kommt vielmehr zu dem Schluss, dass das zivilgesellschaftliche Engagement in strukturschwachen Regionen in besonderer Weise gefördert werden sollte.
    Print ISSN: 0034-0111
    Electronic ISSN: 1869-4179
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Published by De Gruyter
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  • 2
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    Occluded Organic Nanofibers Template the Hierarchical Organization of Nanosized Particles in Calcium Oxalate Raphides of Musa spp (2017)
    American Chemical Society (ACS)
    Details
    Publication Date: 2017-12-31
    Description: Crystal Growth & Design DOI: 10.1021/acs.cgd.7b01578
    Print ISSN: 1528-7483
    Electronic ISSN: 1528-7505
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Published by American Chemical Society (ACS)
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  • 3
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    An efficiency algorithm on Gaussian mixture UKF for BDS/INS navigation system (2017)
    Elsevier
    Details
    Publication Date: 2017-12-31
    Description: Publication date: Available online 29 December 2017 Source: Geodesy and Geodynamics Author(s): Qing Dai, Lifen Sui, Lingxuan Wang, Tian Zeng, Yuan Tian To further improve the performance of UKF (Unscented Kalman Filter) algorithm used in BDS/SINS (BeiDou Navigation Satellite System/Strap down Inertial Navigation System), an improved GM-UKF (Gaussian Mixture Unscented Kalman Filter) considering non-Gaussian distribution is discussed in this paper. This new algorithm using SVD (Singular Value Decomposition) is proposed to alternative covariance square root calculation in UKF sigma point production. And to end the rapidly increasing number of Gaussian distributions, PDF (Probability Density Function) re-approximation is conducted. In principle this efficiency algorithm proposed here can achieve higher computational speed compared with traditional GM-UKF. And simulation experiment result show that, compared with UKF and GM-UKF algorithm, new algorithm implemented in BDS/SINS tightly integrated navigation system is suitable for handling nonlinear/non-Gaussian integrated navigation position calculation, for its lower computational complexity with high accuracy.
    Print ISSN: 1674-9847
    Topics: Architecture, Civil Engineering, Surveying , Geosciences
    Published by Elsevier
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  • 4
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    The International Conference on Natural Products and Bioresource Science 2017 (ICONPROBIOS 2017) (2017)
    Institute of Physics (IOP)
    Details
    Publication Date: 2017-12-31
    Description: Preface The International Conference on Natural Products and Bioresource Science (ICONPROBIOS) 2017 is a conference organized by Research Unit for Natural Product Technology, Indonesian Institute of Sciences (BPTBA-LIPI), which is conducted in conjunction with the Indonesian Science Expo (ISE) arranged by the Indonesian Institute of Sciences (LIPI) to commemorate its 50 th anniversary. ICONPROBIOS 2017 was held on October 23-24, 2017 at Balai Kartini (Convention Center), Jakarta, Indonesia. By carrying the theme “Natural Products for Sustainable Life”, ICONPROBIOS 2017 brought together more than 50 participants and presenters from several background such as university lecturer, researcher, student, and industrial practitioners. ICONPROBIOS 2017 provides a forum for exchange of information on natural products within all of the related topics as well as aims to build and strengthen scientific cooperation among the research institutions. The topics ...
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
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  • 5
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    Alternative to conventional extraction of vetiver oil: Microwave hydrodistillation of essential oil from vetiver roots ( Vetiveria zizanioides ) (2017)
    Institute of Physics (IOP)
    Details
    Publication Date: 2017-12-31
    Description: In this study the extraction of essential oil from vetiver roots ( Vetiveria zizanioides ) has been carried out by using microwave hydrodistillation. In the extraction of vetiver oil using microwave hydrodistillation method is studied the effect of microwave power, feed to solvent (F/S) ratio and extraction time on the yield of vetiver oil. Besides, in this study can be seen that microwave hydrodistillation method offers important advantages over hydrodistillation, such as shorter extraction time (3 h vs. 24 h for hydrodistillation); better yields (0.49% vs. 0.46% for hydrodistillation); and environmental impact (energy cost is appreciably higher for performing hydrodistillation than that required for extraction using microwave hydrodistillation). Based on the analysis using GC-MS can be seen 19 components on vetiver oil that has been extracted using microwave hydrodistillation. In addition, GC-MS analysis showed that the main components of vetiver oil that has been extract...
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
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  • 6
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    The effect of microwave power on the production of biodiesel from nyamplung (2017)
    Institute of Physics (IOP)
    Details
    Publication Date: 2017-12-31
    Description: Today, energy needs in Indonesia still rely on fossil energy sources that its availability in the world is increasingly depleted. Therefore, the research for alternative energy of petroleum must be developed, one of them is biodiesel. The use of microwave as energy source of biodiesel production can speed up the reaction time. So the microwave is considered more efficient. Seeds of nyamplung has an oil content of 71.4% (w/w) by weight. With the oil content of the nyamplung seeds has great potential when used as a raw material for biodiesel production. The aim of this research to study the effect of microwave power on the production of biodisel from nyamplung oil. Microwave power affects density, viscosity and yield of the product. The used of alkali catalyst, with higher the power, the lower the density and viscosity of the resulting product, but the resulting yield is 300 W. The power of more than 300 W is the opposite, resulting in the production of biodiesel using the optimum...
    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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    Comparative Study of Powdered Ginger Drink Processed by Different Method:Traditional and using Evaporation Machine (2017)
    Institute of Physics (IOP)
    Details
    Publication Date: 2017-12-31
    Description: Ginger drink is one of the traditional beverage that became one of the products of interest by consumers in Indonesia. This drink is believed to have excellent properties for the health of the body. In this study, we have compared the moisture content, ash content, metal content and the identified compound of product which processed with traditional technique and using an evaporator machine. The results show that both of products fulfilled some parameters of the Indonesian National Standard for the traditional powdered drink. GC-MS analysis data showed the identified compound of both product. The major of hydrocarbon groups that influenced the flavor such as zingiberene, camphene, beta-phelladrine, beta-sesquepelladrine, curcumene, and beta-bisabolene were found higher in ginger drink powder treated with a machine than those processed traditionally.
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
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  • 8
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    Antiviral effects of Curcuma longa L. against dengue virus in vitro and in vivo (2017)
    Institute of Physics (IOP)
    Details
    Publication Date: 2017-12-31
    Description: Dengue is the most common infective disease caused by dengue virus (DENV) and endemic diseases in tropical and subtropical areas. Until now, there is no specific antiviral for dengue infection. It is known that viral load is related to disease severity. Curcuma longa L. (turmeric) with curcumin as major active compound has been identified for its antiviral effect. This study to determine antiviral effect of C. longa extract on DENV-2 in vitro and in vivo along with its toxicity in liver and kidney of ddY mice. Antiviral activity (IC 50 ) and toxicity (CC 50 ) in vitro was examined on Huh7it-1 cells by focus assay and a MTT assay, respectively. To determine the selectivity index (SI), we used CC 50 and IC 50 value. The safe doses obtained were used for toxicity tests of liver and kidney with histopathological and biochemical observations. The C. longa extracts was given orally with dose of 0.147 mg/mL for each mice at 2 h...
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
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  • 9
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    Comparison of microwave hydrodistillation and solvent-free microwave extraction of essential oil from Melaleuca leucadendra Linn (2017)
    Institute of Physics (IOP)
    Details
    Publication Date: 2017-12-31
    Description: The comparison of solvent-free microwave extraction (SFME) and microwave hydrodistillation (MHD) in the extraction of essential oil from Melaleuca leucadendra Linn. was examined. Dry cajuput leaves were used in this study. The purpose of this study is also to determine optimal condition (microwave power). The relative electric consumption of SFME and MHD methods are both showing 0,1627 kWh/g and 0,3279 kWh/g. The results showed that solvent-free microwave extraction methods able to reduce energy consumption and can be regarded as a green technique for extraction of cajuput oil.
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
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  • 10
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    Evaluation Lactogenic Activity of Ethyl Acetate Fraction of Torbangun ( Coleus amboinicus L.) Leaves (2017)
    Institute of Physics (IOP)
    Details
    Publication Date: 2017-12-31
    Description: This study aimed to assess the lactogenic property of ethyl acetate fraction of torbangun ( Coleus amboinicus L.) leaves and to identify the compounds that responsibility as ‘milk booster’ using LC- MS approach. Lactagogue activity was evaluated in terms of quantity of milk produced from the rats treated with commercial milk booster (AF), ethyl acetate fraction of torbangun leaves (EA), water extraction of torbangun (AQ) and kaempferol (KP). The feed was given orally every two days and starting from Day 2 after giving birth until Day 28. The performance of milk production was measured along the experimental period by weight-suckle-weight method. The level of prolactin serum was determined by ELISA methods. Histopathological analysis of mammary gland, liver, intestines and kidney tissues was carried out. Moreover, in order to profiling and identification of compounds of ethyl acetate fraction, ultra-performance liquid chromatography quadrupole time of flight to electrospray...
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
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