23,734 research outputs found
Cold sodium hydroxide/urea based pretreatment of bamboo for bioethanol production: characterization of the cellulose rich fraction
No full textBamboo (Neosinocalamus affinis) was subjected to successive pretreatments to isolate cellulose rich fractions for further utilization. In this study, the ball-milled bamboo underwent ultrasound treatment in ethanol solution at 20 °C for 0, 5, 15, 35, and 50 min, respectively. Then the samples were dissolved with 7% NaOH/12% urea solutions at ?12 °C, followed by successive extractions with dioxane, ethanol, and dimethyl sulfoxide (DMSO). The yields of the obtained cellulose rich fractions ranged from 75.1 to 77.7%. In addition, the structural features of the cellulose rich fractions and the original ball-milled sample were comparatively characterized with a set of spectroscopy and wet chemistry methods including FT-IR, CP/MAS 13C NMR, XRD, SEM, sugar analysis, etc. The results showed that the successive pretreatments resulted in partial removal of carbohydrates and lignin. The lignin released during the pretreatments could facilitate the removal of lignin, which was mainly composed of G and S types. The removal of acetyl groups suggested a decrease of the satirical barrier of enzyme absorption to cellulose. The cellulose rich fractions appeared looser and exhibited more internal surfaces compared to the ball-milled sample. The changes of chemical structures and morphology of the treated sample suggested that the cold sodium hydroxide/urea based pretreatments effectively disrupted the recalcitrance of bamboo, generating highly reactive cellulosic materials for enzymatic hydrolysis to produce bioethano
PI-run-scripts_SES2016.tgz
No full textRun scripts for CESM1 simulations in which only the ocean is active and the atmosphere, sea ice, and land runoff are specified from previous coupled simulations.
Reference: S. Sun, I. Eisenman, and A. Stewart (2016). The influence of Southern Ocean surface buoyancy forcing on glacial-interglacial changes in the global deep ocean stratification. Geophys Res Lett 43, 8124-8132.</p
Extracción de lignanos de carbón leonarditico por los metodos sosa- cloruro de sodio y run-cang sun y determinación de su actividad antioxidante
No full textEste trabajo busca extraer de dicha matriz ácidos húmicos por el método de Run Cang Sun, y el método de sosa – cloruro de sodio, una vez extraídos, fragmentarlos y solubilizarlos para determinar su poder antioxidante. Ya que es conocido que una vez fragmentado los ácidos húmicos se obtienen lignanos y estos poseen grandes cualidades que prestan beneficio a la salud humana. En el presente estudio se hace una breve descripción del estado del arte, sobre los ácidos húmicos, la descripción de las características del carbón objeto de estudio; finalizando con una descripción de la metodología empleada para el desarrollo del estudio, los resultados obtenidos y las conclusiones a las que se llegó
Author GOH Rivera Sun Speech
No full textAuthor GOH Rivera Sun gives her speech during the banquet ceremonies of Mythcon 52 in Albuquerque, NM on July 31st, 2022
Assessment of Self-Archiving in Institutional Repositories: Depositorship and Full-Text Availability
No full textThis research evaluates the success of open access self-archiving in several well-known institutional repositories. Two assessment factors have been applied to examine the current practice of self-archiving: depositorship and the availability of full text. This research discovers that the rate of author self-archiving is low and that the majority of documents have been deposited by a librarian or administrative staff. Similarly, the rate of full-text availability is relatively low, except for Australian repositories. By identifying different practices of self-archiving, repository managers can create new strategies for the operation of their repositories and the development of archiving policies
Ping jing guan cong shu /
No full textDouble leaves, oriental style, in case.Lanling Sun zhi xing yan yuan ban ; Wu Xian Zhu shi huai lu jia shu cang ban.Mode of access: Internet
Dr. Lin Sun, CAU, March 2013
No full textThis video is a conversation with Dr. Lin Sun. Dr. Sun talks about an exhibit at the Woodruff Library titled "At The Boundary." Jordan Moore, AUC Woodruff Library, is the interviewer
Sun shi ci tang shu mu ji qi ta er zhong.
No full textChong kan ben.Sun shi ci tang shu mu nei, wai bian, qi juan / Sun Xingyan zhuan ; Ping jin guan jiao cang shu ji ji san juan bu yi, xu bian / Sun Xingyan zhuan ; Lian shi ju cang shu ji nei, wai bian, er juan / Sun Xingyan zhuan ; Chen Zongyi bian ci.Mode of access: Internet
Sun Valley, ski run
No full textSkiiers coming down a run at Sun Valley, Idaho. Chair lift in background
Applying the NISO Metasearch Initiative Scheme to Enhance E-Resources Management at Rutgers University Library
No full textThis paper discusses problems in the management of library e-resources and attempts to identify potential solutions to the problems. By describing an e-resources enhancement project taken by Rutgers University Libraries, this paper points to the importance of providing contextually-rich metadata and reorganizing the accessibility of e-resources on a library’s website. It introduces how this Rutgers project adopted the National Information Standards Organization Metasearch Initiative to support the identification of appropriate e-collections for metaseaching. The outcomes of the project have facilitated a dynamic display of relevant e-resources to library users as an effective way of automatic access to library e-collections.Peer reviewe
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