36,346 research outputs found
Rhyacophila tetraphylla Sun & Yang 1995
No full textRhyacophila tetraphylla Sun & Yang 1995 Rhyacophila tetraphylla Sun & Yang 1995, 31, fig. 12, male. Material examined. CHINA, Jiang-xi Province, Wu-yi-shan National Nature Reserve: Tong-mu River at Wu-yishan Station, 27.845°N, 117.726°E, elev. 900 m, 1 June 2005, collected by Lianfang YANG— 4 males, 2 females; Unnamed tributary of Tong-mu River, 27.896°N, 117.722°E, elev. 930 m, 3 Jun. 2005, collected by Changhai SUN— 1 male; Unnamed tributary of Tong-mu River, 27.859°N, 117.735°E, elev. 821 m, 3 June 2005, by Xin ZHOU and Christy J. GERACI— 2 males, 1 female; Unnamed tributary of Tong-mu River, 27.849°N, 117.0.731°E, elev. 877 m, 3 June 2005, collected by Lianfang YANG— 2 males; Li-tou-jian Stream, 500–900 m upstream of protected area marker, 27.980°N, 117.862°E, elev. 375–404 m, 5 June 2005, collected by Changhai SUN, Changfa ZHOU and Xin ZHOU—1 male, 2 females. Distribution. China (An-hui, Fu-jian, Jiang-xi).Published as part of Sun, Changhai, 2016, Notes on the Rhyacophila angulata Species Group with descriptions of two new species (Insecta, Trichoptera, Rhyacophilidae), pp. 193-200 in Zootaxa 4150 (2) on page 198, DOI: 10.11646/zootaxa.4150.2.7, http://zenodo.org/record/26376
solid solution: achieving high activity for sustainable acidic water oxidation
No full textThis article reveals the promising potential of MnCoOx solid solutions as an effective catalyst for the oxygen evolution reaction (OER). The solid oxide solution was synthesized by utilizing redox deposition of KMnO4 and Co(NO3)(2) on a carbon paper (CP) support with varying Co/Mn ratios. XRD and TEM analyses confirmed the homogeneous distribution of Co and Mn species in MnCoOx. According to OER tests in acid electrolyte, the catalytic efficiency of Mn1Co5Ox surpassed that of Co3O4, MnOx, and IrO2, demonstrating overpotentials of 275 and 569 mV at a current density of 10 and 100 mA cm(-2), respectively. The investigation emphasizes the crucial roles of Co3+ and Mn4+ cations as well as oxygen vacancies (O-v) sites in facilitating the OER mechanism. These essential characteristics were duly observed in a Mn1Co5Ox solid solution catalyst. Furthermore, the introduction of a Mn dopant contributed to the durability of Mn1Co5Ox in acidic OER, thereby exhibiting outstanding catalytic stability for nearly 300 hours at 100 mA cm(-2) current density. In addition, DFT studies provided insight into how Mn1Co5Ox enhances the catalytic performance of the OER. In conclusion, this study offers valuable insight into designing efficient OER catalysts using MnCoOx solid solutions as a promising candidate.
Special issue: Process safety in times of a pandemic
No full textGreen 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.Safety and Security Scienc
Distributed human computation framework for linked data co-reference resolution
No full textDistributed Human Computation (DHC) is a technique used to solve computational problems by incorporating the collaborative effort of a large number of humans. It is also a solution to AI-complete problems such as natural language processing. The Semantic Web with its root in AI is envisioned to be a decentralised world-wide information space for sharing machine-readable data with minimal integration costs. There are many research problems in the Semantic Web that are considered as AI-complete problems. An example is co-reference resolution, which involves determining whether different URIs refer to the same entity. This is considered to be a significant hurdle to overcome in the realisation of large-scale Semantic Web applications. In this paper, we propose a framework for building a DHC system on top of the Linked Data Cloud to solve various computational problems. To demonstrate the concept, we are focusing on handling the co-reference resolution in the Semantic Web when integrating distributed datasets. The traditional way to solve this problem is to design machine-learning algorithms. However, they are often computationally expensive, error-prone and do not scale. We designed a DHC system named iamResearcher, which solves the scientific publication author identity co-reference problem when integrating distributed bibliographic datasets. In our system, we aggregated 6 million bibliographic data from various publication repositories. Users can sign up to the system to audit and align their own publications, thus solving the co-reference problem in a distributed manner. The aggregated results are published to the Linked Data Cloud
Intersystem soft handover for converged DVB-H and UMTS networks
No full textDigital video broadcasting for handhelds (DVB-H) is the standard for broadcasting Internet Protocol (IP) data services to mobile portable devices. To provide interactive services for DVB-H, the Universal Mobile Telecommunications System (UMTS) can be used as a terrestrial interaction channel for the unidirectional DVB-H network. The converged DVB-H and UMTS network can be used to address the congestion problems due to the limited multimedia channel accesses of the UMTS network. In the converged network, intersystem soft handover between DVB-H and UMTS is needed for an optimum radio resource allocation, which reduces network operation cost while providing the required quality of service. This paper deals with the intersystem soft handover between DVB-H and UMTS in such a converged network. The converged network structure is presented. A novel soft handover scheme is proposed and evaluated. After considering the network operation cost, the performance tradeoff between the network quality of service and the network operation cost for the intersystem soft handover in the converged network is modeled using a stochastic tree and analyzed using a numerical simulation. The results show that the proposed algorithm is feasible and has the potential to be used for implementation in the real environment
Beyond interfaces: A usability study of Chinese journal databases
No full textA presentation at the Council on East Asian Libraries (CEAL) annual meeting in Boston, MA on March 21, 2007
Rose Galaida and the Central China Relief Records, 1946: Discovery, Investigation, and Implications
No full textThe materials in the Central China Relief Records (CCRR) collection provide a window to the experiences of Rose Galaida in Hubei. The collection consists of about 100 documents totaling over 300 pages (excluding duplicate copies) and 5 photographs.Peer reviewedPublished in the Journal of East Asian Libraries and available from the journal at: https://scholarsarchive.byu.edu/jeal/vol2011/iss153/
Breaking New Ground in East Asia Library History
No full textReview of Peter X. Zhou. Collecting Asia: East Asian Libraries in North America (2010).Published in H-Net Reviews in the Humanities and Social Sciences and available at: http://www.h-net.org/reviews/showrev.php?id=32231March 201
The Price Difference and Trend Analysis of Yesso Scallop (<i>Patinopecten yessoensis</i>) in Changhai County, China
No full textThis paper focuses on the difference in inter-group and intra-group price of Yesso scallop (Patinopecten yessoensis) and the simulation accuracy of three different exponential smoothing models in the price. Based on the farm-gate price and wholesale price data of P. yessoensis in Changhai county from January 2017 to December 2018, this study uses the Wilcoxon rank sum test to compare the inter- and intra-group price and applies simple exponential smoothing (SES), Holt’s linear trend method, and Holt-Winters’ additive method to simulate and predict the price. The results suggest that (i) to improve economic benefits, it is necessary to formulate reasonable farming area and establish low-density ecological cultivation mode; (ii) the price’s Akaike information criterion (AIC) and mean absolute percentage error (MAPE) values by the SES model are optimal, and the MAPE value is lower than 4%; and (iii) the result of SES analysis shows no obvious change from January to March 2019
One step preparation of pure tau-MnAl phase with high magnetization using strip casting method
No full textFerromagnetic phase of Mn-Al exhibits great potential in the rare-earth free permanent magnetic materials due to its high magnetocrystalline anisotropy, high magnetization, high Curie temperature and low cost. In this work, the strip casting technique was applied to prepare MnAl magnetic phase. X-ray diffraction and energy dispersive X-ray analyses indicate that the as-prepared Mn54Al46 strip sample consists of pure tau-MnAl magnetic phase. It is found that the composition of Mn54Al46 is suitable to prepare tau-MnAl phase during the strip casting process. The Mn54Al46 strip sample synthesized through the strip casting exhibits a fairly high magnetization of 114 emu/g under a field of 5 T, while the coercivity of iHc = 2.8 kOe, magnetization of M-5T = 63.9 emu/g at room temperature can be obtained for Mn54Al46 powder sample. This preparation method can produce a large amount of tau-phase MnAl alloy and promote mass industrialized production. (C) 2017 Author(s)
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