Described in this paper are concept, characteristics and functions of cloud computing, mobile library and Internet of things and their effect on intelligent, knowledge-based and ubiquitous library service.

After the concept of data curation and its application in foreign countries were described , the key points of data curation for data service in special libraries and related problems were analyzed according to the overall needs and changes of users in special libraries.

Objective To study the role of polyamines(putrescine,spermidine and spermine) in regulating ornithine decarboxylase(ODC) protein levels in the early regenerating liver of rats. Methods Exogenous polyamines(dissolved in 0.9% NaCl) were administered subcutaneously to adult male SD rats(180～220g).The ODC protein levels in the regenerating liver induced by partial hepatectomy(PH) were measured by Western blotting analysis. Results The treatment with high doses of putrescine( 20 mg/kg body weight),spermidine(0.15 mg/kg body weight) or spermine(6 mg/kg body weight) reduced the ODC protein level compared with the control group within 12 hours after PH.However,the treatment with low doses of putrescine(0.02 mg/kg),spermidine(0.03 mg/kg) or spermine(0.06 mg/kg) resulted in a rapid increase in the protein level in the 4th hour after PH,which was 15.1%,29.5% or 30.3% higher than that of control rats respectively.Conclusion Polyamines with certain doses play a role in the feedback regulation of ODC protein levels in the early regenerating liver,where spermidine and spermine play a greater role than putrescine dose.

Objective The regulation of ornithine decarboxylase (ODC) gene expression and enzyme activity by corticosterone, the main glucocorticoid in rat, during rat liver regeneration induced by partial hepatectomy (PH) was evaluated.Methods Bilateral adrenaleetomies (ADX) and sham-ADX were performed on ether-anesthetized rats 3 days before PH.Corticosterone in sesame oil was injected subcutaneously to adrenalectomied rats. ODC mRNA, ODC protein and enzyme activity were detected by RT-PCR, Western blotting and high performance liquid chromatography (HPLC), respectively. Results The ODC mRNA levels, protein accumulation and enzyme activity were lower in the intact liver compared to the regenerating liver.After PH, mRNA levels were remarkably enhanced in all groups (n=6 in each group) and peaked at 5 hours post-PH. Till 7 hours, the contents in all groups from high to low were ADX group,control group (Sham-ADX group), ADX treated with 10mg/kg and 40mg/kg body weight corticosterone group, respectively. ODC protein accumulation in ADX rats was higher than that in control rats (n=13, the same below), but it decreasod in corticosterone-treated (10mg/kg) rats until 24 hours post-PH, with a strong decline seen in 40mg/kg corticosterone-treated rats. ODC activity was rapidly promoted, and the highest levels were observed at 6 hours after PH in all groups (n=6 in each group). After corticosterone treatment, the activities declined significantly at 6 hours post-PH, with the lowest value found in the 40mg/kg group. Conclusion Corticosterone treatment results in dose-dependent decreases in ODC mRNA and enzyme protein both in the intact liver and the regenerating liver. The change in ODC activity is partially related to alterations of ODC mRNA and protein accumulation.

After a description of the demand for medical information in grass-root PLA health units, the experiences of Medical Library of Chinese PLA in providing medical information service for grass-root PLA health units were summarized, and suggestions were proposed for medical library and information institutions to provide information service for them.

After the definition and emergence of MOOC and its development at home and abroad were described, the position of library under MOOC environment was discussed with stress laid on how to deepen the service in medical library by making use of MOOC and the challenges medical library is faced.

After the concept, features and implementation types of storage virtualization technology were described, its application in storage management of library was studied.Storage virtualization technology can simplify the management of storage system, improve the utilization rate of storage equipments, and effectively solve the problems in storage management of library.

After the key technologies used in mobile reading service of library were compared , the authors pointed out that copyright and privacy protection were the major issues challenging the mobile reading service of library.Its development was prospected .

Drupal, a powerful content management system and content management framework, can provide a visiting interface for the mobile terminal equipments , especially the interface for the mobile APP program .How to imple-ment the information pushing function in mobile library using Drupal+PhoneGap was described by constructing the APP program model for information pushing and browsing in mobile library as an example.

After the meaning, features and application models of CDP technology were described, its application in protecting data in libraries was studied with Medical Library of Chinese PLA as an example, showing that CDP technology can effectively protect the data, improve their safety, and insure the stable operation of professional sys-tems in Medical Library of Chinese PLA.