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Luciferase from firefly lantern extract was immobilized on CNBr-activated Sepharose 4B. The kinetic properties of immobilized
luciferase were extensively studied. TheK
m′ for D-luciferin is 11.9 μmol/L, the optimum pH and temperature for Sepharose-bound enzyme were 7.8 and 25°C respectively.
A luminescence fiber optic biosensor, making use of immobilized crude luciferase, was developed for assay of ATP. The peak
light intensity was linear with respect to ATP concentration in range of 10−9–10−5 mol/L. A biological application was also demonstrated with the determination of serum ATP from rats bred in low versus normal
oxygen environments. 相似文献
55.
McMahon Mary Bimrose Jenny Watson Mark Abkhezr Peyman 《International Journal for Educational and Vocational Guidance》2020,20(3):523-542
International Journal for Educational and Vocational Guidance - Combining quantitative career assessment with narrative career counselling is a career counselling challenge. The Integrative... 相似文献
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Lina?KashyapEmail author 《International journal for the advancement of counseling》2004,26(4):337-339
In 2001, for the first time in the history of the International Association for Counselling, International Conference was held in a developing Asian country–India, with the theme Families in Transition–Counselling in Transition–Meeting the Challenges Ahead. This special issue contains some of the presentations made by Indian participants during this conference which best reflect the challenges and diversities of counseling efforts with families in India. The first article was specially written for this issue in order to give an international relationship of this journal an in depth contextual understanding of Indian families in transition and the challenges they pose to the contemporary Indian counselor. Two articles are reflected to counseling families affected by socio-politial and economic changes. Five authors have written on counseling related to physical and mental disability/addiction and last two articles are reflected to authors experiences as family counselors. 相似文献
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Kinetic knowledge is of great importance in achieving good control of the pyrolysis and gasification process and optimising
system design. An overall kinetic pyrolysis scheme is therefore addressed here. The kinetic modelling incorporates the following
basic steps: the degradation of the virgin biomass materials into primary products (tar, gas and semi-char), the decomposition
of primary tar into secondary products and the continuous interaction between primary gas and char. The last step is disregarded
completely by models in the literature. Analysis and comparison of predicted results from different kinetic schemes and experimental
data on our fixed bed pyrolyser yielded very positive evidence to support our kinetic scheme.
Project (No. 2001CB409600) Supported by the National Key Basic Research Program (973) of China 相似文献
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The Key Stage 3 Strategy is a complex and evolving government strategy intended to improve the education of 11‐ to 14‐year‐olds in England. This paper provides a snapshot of its development by early 2004, drawing on our evaluation of the pilot phase which began in 2000. The evolution of the Strategy, with its phased introduction of both subject and cross‐curricular strands, is described. We then examine the policy intentions and evidence base which underpin it before considering what the Strategy offers in terms of curricular and pedagogical reform. While the Strategy seeks to improve schooling for 11‐ to 14‐year‐olds, it has struggled to offer a coherent approach, though recent changes in emphasis may help. We conclude that a more radical approach to the learning needs of 11‐ to 14‐year‐olds is needed and draw evidence from international trends in middle years education. 相似文献