Influence of Process Parameters on Chlorinated Biocide Decontamination by li-CO2 on Artificially Contaminated Model Materials     

Tiziana Lombardo  Marie Wörle  Vera Hubert  Erwin Hildbrand  Christina Hinterleitner  Ingo Mayer 《文物保护研究》2020,65(2):65-76

ABSTRACT

Previously, 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   

Database Problem Behavior: A Literature Retrieval System for Professionals Dealing with Problem Behaviours of Individuals with Intellectual Disabilities     

Pieter C. Duker  Robert Didden  Hubert Korzilius  Mark Van Acht  Paul Van Acht 《International Journal of Disability, Development & Education》1996,43(3):197-202

Knowledge of the literature among professionals in the area of problem behaviours and developmental disabilities is most likely soon out of date as several hundred useful studies appear each year. A literature database may be a useful tool for clinicians and researchers to conveniently retrieve needed information, preventing them from collecting, reading, processing, and storing all the available material. This report describes a database (i.e., Database Problem Behavior) encompassing information that goes far beyond presenting abstracts only. The third version of the database encompasses 885 empirical studies on the (functional) analysis, and behavioural and pharmacological treatment of problem behaviours (e.g., self‐injurious behaviour, aggressive behaviour, depression) for persons with developmental disabilities.  相似文献   

A primary science education project in Africa     

Hubert M. Dyasi 《Prospects》1978,8(1):82-92

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Impact of commercial search engines and international databases on engineering teaching and research     

Professor Hubert Chanson 《European Journal of Engineering Education》2007,32(3):261-269

For the last three decades, the engineering higher education and professional environments have been completely transformed by the ‘electronic/digital information revolution’ that has included the introduction of personal computer, the development of email and world wide web, and broadband Internet connections at home. Herein the writer compares the performances of several digital tools with traditional library resources. While new specialised search engines and open access digital repositories may fill a gap between conventional search engines and traditional references, these should be not be confused with real libraries and international scientific databases that encompass textbooks and peer-reviewed scholarly works. An absence of listing in some Internet search listings, databases and repositories is not an indication of standing. Researchers, engineers and academics should remember these key differences in assessing the quality of bibliographic ‘research’ based solely upon Internet searches.  相似文献   

Slow and fast adult readers in text comprehension     

Marie -France Ehrlich  Hubert Tardieu 《European Journal of Psychology of Education - EJPE》1991,6(3):337-349

Reading speed is a component of reading ability tests designed to separate «good» and «poor» readers. The purpose of the two experiments reported in this paper were to study whether slow and fast adult readers differ in terms of the subprocesses involved in textual organization. For this, two variables were manipulated: title and type of text. Subjects were classified as slow and fast readers based on the median value of the distribution of reading times on a preliminary text. Data clearly show that reading speed is a reliable individual characteristic. In Experiment 1, the recall performance of slow and fast readers did not differ. No interaction between reading speed and the title and type of text variables were observed. In Experiment 2, these results were replicated and extended to a summary test. So, it appears that slow and fast readers do not process textual organization in a different way and show identical comprehension performances. Further research is necessary to identify those factors that characterize good comprehenders among slow and fast readers.  相似文献   

Books on Research Methodology     

Mary N. Barton  Marion V. Bell  Martha L. Hackman  Hubert M. Blalock 《Communication Booknotes Quarterly》2013,44(4)

Mary N. Barton and Marion V. Bell's compilation Reference Books: A Brief Guide (Baltimere: Enoch Pratt Free Library, $1.25)

Martha L. Hackman's The Practical Bibliographer (Prentice-Hall, $5.95 cloth, $2.95 paper)

Hubert M. Blalock An Introduction to Social Research (Prentice-Hall, $5.95 cloth, $2.95 paper)  相似文献   

Self‐examination as the road to sustaining employee engagement and personal happiness     

Hubert Rampersad 《Performance Improvement》2006,45(8):18-25

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The Enduring Nature of the Tripartite System of Secondary Schooling in Germany: Some Explanations   总被引：1，自引：0，他引：1  

Hubert Ertl  & David Phillips 《British Journal of Educational Studies》2000,48(4):391-412

This paper suggests explanations for the enduring nature of the tripartite system of secondary education in Germany and the failure to develop the comprehensive school (Gesamtschule) over a long period.  相似文献   

The value of the flame of combustibles     

P. Mahler  B.F. Isherwood 《Journal of The Franklin Institute》1905,159(1):31-43

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Comparison of the WISC-R and PPVT for a group of mentally retarded students     

Hubert Booney Vance  Karen K. Prichard  Fred H. Wallbrown 《Psychology in the schools》1978,15(3):349-351

This study compared the WISC-R and PPVT scores for a group of 65 students classified as mentally retarded, ranging in age from 7.5 to 14.5. Pearson product moments (r) and correlated t values were employed in the analysis of data. The evidence from the present study indicated that for this sample of mildly retarded children and youth, the PPVT IQ score is significantly higher than the Full Scale IQ from the WISC-R. The current findings indicate that the same general pattern exists for the WISC-R and PPVT as for the WISC and PPVT scores.  相似文献