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91.
Reading and Writing - In the original publication, the article title was incorrectly published. The correct title has been given with this Correction. 相似文献
92.
Tiziana Lombardo Marie Wörle Vera Hubert Erwin Hildbrand Christina Hinterleitner Ingo Mayer 《文物保护研究》2020,65(2):65-76
ABSTRACTPreviously, heavy use of biocides for the treatment of objects made of organic materials in museum collections (e.g. ethnographic, historical collections) was very common. Now suitable decontamination methods/technologies are being sought. A decontamination treatment by li-CO2 was optimized that considered the specific requirements of museum objects. The treatment was tested on model materials artificially contaminated with biocide solutions containing dichlorodiphenyltrichloroethane (DDT), pentachlorophenol (PCP), lindane, and permethrin or cypermethrin. High decontamination was achieved for DDT, lindane, PCP, and permethrin on artificially biocide loaded wool and wood model materials. Optimal process parameter settings for li-CO2 decontamination include a single 30?min cycle for woolen materials and three sequential 30?min cycles each for wood. These methods allow a reduction of at least 90% of all biocides for wool and between 70% and 85% for wood. Decontamination of the latter was more effective for less polar biocides as DDT and permethrin. Despite a significant improvement in decontamination for wood using co-solvents such as acetone, ethanol, and methyl tertiary-butyl ether (MTBE), their use is not recommended due to the increased risk of damage to the objects, in particular if a surface coating is present. 相似文献
93.
Minds Under Siege: Cognitive Signatures of Poverty and Trauma in Refugee and Non-Refugee Adolescents
Alexandra Chen Catherine Panter-Brick Kristin Hadfield Rana Dajani Amar Hamoudi Margaret Sheridan 《Child development》2019,90(6):1856-1865
The impacts of war and displacement on executive function (EF)—what we might call the cognitive signatures of minds under siege—are little known. We surveyed a gender-balanced sample of 12- to 18-year-old Syrian refugees (n = 240) and Jordanian non-refugees (n = 210) living in Jordan. We examined the relative contributions of poverty, trauma exposure, posttraumatic stress, and insecurity to variance in inhibitory control and working memory. We observed associations between poverty and WM, suggesting that, even in populations exposed to substantial violence and fear, poverty is a specific pathway to WM deficit. We did not, however, find associations between EFs and exposures to trauma. Careful distinction between childhood adversities may illuminate which neurocognitive pathways matter for measures of cognitive function. 相似文献
94.
Nicole M. McKevett Kourtney R. Kromminga Amelia Ruedy Rachel Roesslein Kristin Running Robin S. Codding 《Learning disabilities research & practice》2020,35(1):25-35
National assessments suggest that many students do not display proficiency with fractions. Considering that time and materials are precious resources, many educators are looking to use technology to provide supplemental instruction with low demand on the instructor. The current study utilized a multiple-baseline design to examine the effects of the Motion Math: Bounce application on the fraction quantity comparison and number line placement skills of three fifth-grade students. Results indicate that Motion Math: Bounce improved the quantity comparison skills of all three participants and the number line skills of one participant. Additionally, all three participants made improvements from pre- to posttest on a measure of general fraction knowledge. Implications for future research and intervention implementation are discussed. 相似文献
95.
Kelly Robinson Anne Marie Casey Kathleen Citro 《Journal of Library & Information Services in Distance Learning》2017,11(1-2):77-95
ABSTRACTThis study explores the idea of creating a knowledge base from shared online accounts to use in training librarians who perform distance reference services. Through a survey, follow-up interviews and a case study, the investigators explored current and potential use of shared online accounts as training tools. This study revealed that the participants viewed the concept positively, but many encountered barriers to effectively employing a local knowledge base as a training tool. 相似文献
96.
97.
Using a mixed methods research approach this study explores faculty perceptions of LORLS at DBS. Data generated by the study will inform advocacy, marketing and training initiatives to promote the platform. The study concludes with a number of deductive and inductive findings. The first is that although DBS faculty are highly predisposed to using LORLS, there are a number of variables that impact its use that must be considered in the context of advocacy, marketing and training activities. Grounded theory analysis of the focus group data also revealed that faculty would like LORLS to have greater interoperability with the virtual learning environment (VLE) Moodle. A key output of the study is a LORLS Process Implementation Chart for proposed inclusion on the LORLS developers' implementation blog to assist other organizations with LORLS adoption. The chart synthesizes the key findings of the literature review and of the data generated in this study. 相似文献
98.
Berg M 《The Journal of perinatal education》2005,14(3):23-32
In order to optimize the possibilities for the birth of a healthy child, pregnant women with type 1 diabetes mellitus (type 1 DM) work hard to achieve normoglycemia. In the research presented here, pregnant, diabetic women's experiences of dealing with life circumstances are summarized as a construct of duality: "to master or to be enslaved." The overall experience of challenges and managing is understood to depend on the individual woman's identity, attitude, and resources including health professionals and social environment. Health professionals in antenatal care have a special responsibility to give care that not only optimizes the biological possibility for a healthy child to be born but also supports the woman with type 1 DM to master the situation and, thus, promote her health, well-being, and motherhood. 相似文献
99.
This paper investigates chemical bleaching of wood to make species-specific practical recommendations for colour adjustment of veneer in furniture conservation. In more detail, chemical bleaching of Honduras mahogany (Swietenia macrophylla), European walnut (Juglans regia), Rio rosewood (Dalbergia nigra), padauk (Pterocarpus spp.), and purpleheart (Peltogyne spp.) is investigated using 11 different bleach solutions. Both oxidative (e.g. hydrogen peroxide and potassium permanganate) and reductive (e.g. oxalic acid and sodium bisulphite) solutions were used. The results show that the wood species react differently with the investigated bleach solutions. It can also be noted that not all investigated solutions were suitable for all wood species. Based on the results, wood species-specific bleach solutions are recommended. 相似文献
100.
Administrators in libraries of all types face the challenge of managing and planning in times of static or declining funding and rapidly changing technology. What tools do they use to gather and employ data for decision-making and evidence-based management? Are the same tools and techniques useful for all types of libraries? Although there are established measurements and metrics for academic libraries, there are few, if any, for others such as hybrid presidential libraries which are not part of the National Archives and Records Administration (NARA) system. This column identifies the metrics used by the pre-NARA presidential libraries and compares them to metrics used by a subgroup of Carnegie Research 1 and Research 2 libraries, those that do not participate in Association of Research Libraries (ARL) statistics program. It identifies similarities and differences. 相似文献