High concentrations of environmental fungi in the archives repositories are dangerous for the documents preserved in those places and for the workers'health.The aims of this work were to evaluate the behavior of t...High concentrations of environmental fungi in the archives repositories are dangerous for the documents preserved in those places and for the workers'health.The aims of this work were to evaluate the behavior of the fungal concentration and diversity in the indoor air of repositories of 3 archives located in Havana,Cuba,and to demonstrate the potential risk that these taxa represent for the documentary heritage preserved in these institutions.The indoor and outdoor environments were sampled with a biocollector.From the I/O ratios,it was evident that two of the studied archives were not contaminated,while one of them did show contamination despite having temperature and relative humidity values very similar to the other two.Aspergillus,Penicillium and Cladosporium were the predominant genera in the indoor environments.New finds for archival environments were the genera Harposporium and Scolecobasidium.The principal species classified ecologically as abundant were C.cladosporioides and P.citrinum.They are known as opportunistic pathogenic fungi.All the analyzed taxa excreted acids,the most of them degraded cellulose,starch and gelatin while about 48%excreted different pigments.But 33%of them showed the highest biodeteriogenic potential,evidencing that they are the most dangerous for the documentary collections.展开更多
Advances in computing and communications mean that we can cost-effectively store every book, sound recording, movie, software package, and public Web page ever created, and provide access to these collections via the ...Advances in computing and communications mean that we can cost-effectively store every book, sound recording, movie, software package, and public Web page ever created, and provide access to these collections via the Intemet to students and adults all over the world. By mostly using existing institutions and funding sources, we can build this as well as compensate authors within the current worldwide library budget. We should take advantage of our new technologies and our open societies to make a Universal Library again, and go the next step and make all knowledge easily available to every man, woman and child around the world.展开更多
The purpose of introducing blockchain into electronic archives sharing and utilization is to break the information barrier between electronic archives sharing departments by relying on technologies such as smart contr...The purpose of introducing blockchain into electronic archives sharing and utilization is to break the information barrier between electronic archives sharing departments by relying on technologies such as smart contract and asymmetric encryption.Aiming at the problem of dynamic permission management in common access control methods,a new access control method based on smart contract under blockchain is proposed,which improves the intelligence level under blockchain technology.Firstly,the Internet attribute access control model based on smart contract is established.For the dynamic access of heterogeneous devices,the management contract,permission judgment contract and access control contract are designed;Secondly,the access object credit evaluation algorithm based on particle swarm optimization radial basis function(PSO-RBF)neural network is used to dynamically generate the access node credit threshold combined with the access policy,so as to realize the intelligent access right management method.Finally,combined with the abovemodels and algorithms,the workflow of electronic archives sharing and utilization model of multi blockchain is constructed.The experimental results show that the timeconsuming of the process increases linearly with the number of continuous access to electronic archives blocks,and the secure access control of sharing and utilization is feasible,secure and effective.展开更多
Intemet era, mutual sharing, low cost, unlimited time and geographical restrictions on network dissemination, to the public toprovide a new way of entertainment experience and sharing in the network information resour...Intemet era, mutual sharing, low cost, unlimited time and geographical restrictions on network dissemination, to the public toprovide a new way of entertainment experience and sharing in the network information resources at the same time, also highlights importantdrawbacks, mainly reflected the contradiction between resource sharing and copyright protection, sharing is often cyber source violated theright to network dissemination of information to the original author. With the rapid development of the Internet, the seriousness of this problemis becoming increasingly prominent. Based on the information construction of university archives management as the center to carry outresearch, improve the service level of university archives from the first two aspects discusses the necessity of the information constructionof the archives management, promoting the development of colleges and universities. Secondly introduces specific measures of realizing theinformatization construction of university archives management and archives management standardization, digitization, archives informationnetwork construction, the archives management personnel to conduct a comprehensive training. The fixed assets of university is an important partof the state-owned assets, and its asset management level is directly related to the safety of state-owned assets, the use efficiency of assets and thepromotion of the teaching and research level in universities. The university fixed assets data information management is an important aspect ofasset management, it provides decision-making basis for the management of fixed assets in colleges and universities, affecting the efficiency ofthe entire asset management.展开更多
Navigated by the forces of the market economy mechanism, the development and utilization of human resources is key to guaranteeing the operation of public institutions .The personnel archive is a record of one＇s main...Navigated by the forces of the market economy mechanism, the development and utilization of human resources is key to guaranteeing the operation of public institutions .The personnel archive is a record of one＇s main experiences and performances, thus playing a vital role in the process of developing talents .This article mainly make an analysis of the main role and status of personnel archive information and the main means and contents of talents development.展开更多
The Meteorological Archives of Inner Mongolia Autonomous Region is the largest professional meteorological archives in the Inner Mongolia region,and it is also the first national meteorological archives to be promoted...The Meteorological Archives of Inner Mongolia Autonomous Region is the largest professional meteorological archives in the Inner Mongolia region,and it is also the first national meteorological archives to be promoted to a national first-class archive management unit.Inner Mongolia Meteorological Archives now preserves more than 80,000 volumes of meteorological management files,meteorological observation records,meteorological scientific research files,and meteorological infrastructure files,providing the most fundamental support services for the development,research and application of meteorological services.展开更多
Environmental fungi can damage the documentary heritage conserved in archives and affect the personnel’s health if their concentrations,thermo-hygrometric parameters and ventilation conditions are not adequate,proble...Environmental fungi can damage the documentary heritage conserved in archives and affect the personnel’s health if their concentrations,thermo-hygrometric parameters and ventilation conditions are not adequate,problems that can be accentuated by Climate Change.The aims of this work were to identify and to characterize the airborne fungal pollution of naturally ventilated repositories in the Provincial Historical Archive of Santiago de Cuba and predict the risk that these fungi pose to the staff’s health.Indoor air of three repositories of this archive and the outdoor air were sampled in an occasion every time in 2015,2016 and 2017 using a SAS sampler.The obtained fungal concentrations varied from 135.6 CFU/m^(3)to 421.1 CFU/m^(3)and the indoor/outdoor ratios fluctuated from 0.7 to 4.2,evidencing a variable environmental quality over time,but in the third sampling the repositories environments showed good quality.Aspergillus and Cladosporium were the predominant genera in these environments.A.flavus was a prevailed species in indoor air,while A.niger and Cl.cladosporioides were the species that showed the greatest similarities with the outdoor air.Coremiella and Talaromyces genera as well as the species Aspergillus uvarum,Alternaria ricini and Cladosporium staurophorum were the first findings for environments of Cuban archives.Xerophilic species(A.flavus,A.niger,A.ochraceus,A.ustus)indicators of moisture problems in the repositories were detected;they are also opportunistic pathogens and toxigenic species but their concentrations were higher than the recommended,demonstrating the potential risk to which the archive personnel is exposed in a circumstantial way.展开更多
As an intangible asset with potential value, enterprise archives are the real records of enterprise production and operation, equipment renewal, scientific research and development, and the realistic evidence of produ...As an intangible asset with potential value, enterprise archives are the real records of enterprise production and operation, equipment renewal, scientific research and development, and the realistic evidence of product sales, contact contracts and legal disputes. They play an important role in the development of enterprises. In order to better promote the modern management of enterprises and scientifically, comprehensively, quickly and reasonably improve the management level of enterprise archives, the enterprise archives should be fully developed and utilized to improve its utilization effect, so as to make archives play the role of "booster" in enterprise services, and to maximize the value of archives in assisting enterprise development.展开更多
The searching method of spatial information on traditional geo-archives catalog database(TGCD)is based on the text,and the result of retrieval can be only from the text of fields of relational database.The information...The searching method of spatial information on traditional geo-archives catalog database(TGCD)is based on the text,and the result of retrieval can be only from the text of fields of relational database.The information queried must be input into the relational database as a text form in advance,otherwise,the visitors would not get any result from it.So.展开更多
The Central Committee of the Communist Party of China(CPC)with Comrade Xi Jinping at its core made the decision to establish the National Archives of Publications and Culture(NAPC).The NAPC represents a foundational p...The Central Committee of the Communist Party of China(CPC)with Comrade Xi Jinping at its core made the decision to establish the National Archives of Publications and Culture(NAPC).The NAPC represents a foundational project for China's development as a great civilization and a landmark cultural initiative that will benefit generations to come.It fully embodies the CPC's profound consciousness in carrying forward and developing Chinese culture and its initiative in creating a brighter future by drawing on the wisdom of the past.展开更多
The Ning-Wu Basin is an important part of the Middle-Lower Yangtze River Metallogenic Belt in eastern China.It contains well-preserved Mesozoic volcanic sequences that document significant geodynamic evolution.However...The Ning-Wu Basin is an important part of the Middle-Lower Yangtze River Metallogenic Belt in eastern China.It contains well-preserved Mesozoic volcanic sequences that document significant geodynamic evolution.However,uncertainties surrounding the ages of eruptions and the temporal relationships between the four main volcanic cycles—the Longwangshan,Dawangshan,Gushan and Niangniangshan formations—have hindered our understanding of magmatic pulsation and its connection to iron mineralisation.Here,high-precision LA-ICP-MS zircon U-Pb dating of four fresh volcanic samples(one per formation)reveals weighted mean ages of 132.3±1.0 Ma(Longwangshan;MSWD=1.3),130.4±1.6 Ma(Dawangshan;MSWD=1.3),128.1±1.9 Ma(Gushan;MSWD=2.0)and 127.2±1.1 Ma(Niangniangshan;MSWD=0.23).These dates constrain volcanic activity to the Early Cretaceous Valanginian-Hauterivian interval and show a systematic trend of increasingly younger ages spanning~8 Ma(133-125 Ma).This magmatism can be subdivided into three phases:initiation(133-132 Ma),peak activity(132-130 Ma)and cessation(128-125 Ma).The episodic volcanism correlates with the accelerating rollback of the Pacific subduction zone,which drives crustal melting and asthenospheric upwelling.Notably,these cycles supplied the thermal energy,fluids and iron-rich melts that were essential for the formation of porphyritic iron deposits in the basin.By establishing a highresolution chronostratigraphic framework,this study sheds light on the spatiotemporal evolution of the Ning-Wu Basin,elucidating the coupling between crust-mantle dynamics,volcanic cyclicity and ore-forming processes across eastern China’s metallogenic belt.展开更多
The sediments of crater lakes are one of the ideal archives for high-resolution paleoenvironmental reconstruction.This paper presents sedimentary records of 21 crater lakes in monsoonal China and systematically discus...The sediments of crater lakes are one of the ideal archives for high-resolution paleoenvironmental reconstruction.This paper presents sedimentary records of 21 crater lakes in monsoonal China and systematically discusses the geographical distribution and formation ages of these crater lakes.Sediment provenance of the crater lakes and its influencing factors were analyzed,and paleoenvironmental sequences and human activities records on different timescales reconstructed by crater lake sediments in monsoonal China were reviewed.The following points are highlighted:(1)Crater lakes in monsoonal China have been shown to preserve continuous long-time sediments that can exceed even 400 ka,although the chronology of some sediments in the southern part is debated and there were currently fewer long time records from the northern part;(2)the sediment provenance of crater lakes in northern China(e.g.,aeolian inputs)was different from that in the south(e.g.,the volcanic-lake rim),due to the different location and deposition conditions of crater lakes;(3)crater lake sediments have been used to reconstruct the history of climate changes on different timescales,but reconstruction studies of glacial-interglacial and decadal-annual scale records and studies of spatial comparisons of records on different timescales still need to be strengthened;(4)the anthropogenic signals,which include cultivation,logging,and industrial activity,are well documented in crater lake sediments from different areas and can therefore provide key evidence for the study of the Anthropocene.展开更多
AIM: To investigate the effect of proton pump inhibitors (PPIs) on glycemic control (HbA1c) in type 2 diabetic patients. METHODS: A crosssectional study of consecutive in-patients admitted to hospital in any departmen...AIM: To investigate the effect of proton pump inhibitors (PPIs) on glycemic control (HbA1c) in type 2 diabetic patients. METHODS: A crosssectional study of consecutive in-patients admitted to hospital in any department during the fi rst semester of the year 2010 who had a recent HbA1c measurement. The study excluded those with a diagnosis of hyperglycemic decompensation, diabetic onset or pregnancy. It compared HbA1c levels of those taking PPIs and those not. RESULTS: A total of 97 patients were recruited. The average HbA1C level was 7.0% ± 1.2%. Overall PPI consumption was 55.7%. HbA1c was signif icantly lower in individuals who took PPIs: -0.6%, 95% CI: -0.12 to-0.83. People who used PPIs with some type of insulin therapy had a HbA1c reduction by -0.8%, 95% CI: -0.12 to -1.48. For the rest of subgroup analysis based on the antidiabetic drug used, PPI consumption always exhibited lower HbA1c levels. CONCLUSION: PPIs seems to be consistently associated with better glycemic control in type 2 diabetes. HbA1c reduction observed is similar to incretin-based therapies.展开更多
This paper compares monthly and seasonal rain rates derived from the Version 5 （V5） and Version 6 （V6） TRMM Precipitation Radar （TPR, TSDIS reference 2A25）, TRMM Microwave Imager （TMI, 2A12）, TRMM Combined Ins...This paper compares monthly and seasonal rain rates derived from the Version 5 （V5） and Version 6 （V6） TRMM Precipitation Radar （TPR, TSDIS reference 2A25）, TRMM Microwave Imager （TMI, 2A12）, TRMM Combined Instrument （TCI, 2B31）, TRMM calibrated IR rain estimates （3B42） and TRMM merged gauge and satellite analysis （3B43） algorithms over New Mexico （NM） with rain gauge analyses provided by the New Mexico water districts （WD）. The average rain rates over the NM region for 1998- 2002 are 0.91 mm d^-1 for WD and 0.75, 1.38, 1.49, 1.27, and 1.07 mm d^-1 for V5 3B43, 3B42, TMI, PR and TCA; and 0.74, 1.38, 0.87 and 0.97 mm d^-1 for V6 3B43, TMI, TPR and TCA, respectively. Comparison of V5 3B43 with WD rain rates and the daily TRMM mission index （TPR and TMI） suggests that the low bias of V5 3B43 for the wet months （summer to early fall） may be due to the non-inclusion of some rain events in the operational gauge analyses that. are used in the production of V5 3B43. Correlation analyses show that the WD rain rates vary in phase, with higher correlation between neighboring WDs. High temporal correlations （〉0.8） exist between WD and the combined algorithms （3B42, 3B43 and TCA for both V5 and V6） while satellite instrument algorithms （PR, TMI and TCI） are correlated best among themselves at the monthly scale. Paired t-tests of the monthly time series show that V5 3B42 and TMI are statistically different from the WD rain rates while no significant difference exists between WD and the other products. The agreements between the TRMM satellite and WD gauge estimates are best for the spring and fall and worst for winter and summer. The reduction in V6 TMI （-7.4%） and TPR （-31%） rain rates （compared to V5） results in better agreement between WD estimates and TMI in winter and TPR during summer.展开更多
Latest Permian to Triassic plutons are widespread in the northern North China Craton(NCC); most of them show calc-alkaline, high-K calc-alkaline, or alkaline geochemical features. The Shadegai pluton in the Wulashan a...Latest Permian to Triassic plutons are widespread in the northern North China Craton(NCC); most of them show calc-alkaline, high-K calc-alkaline, or alkaline geochemical features. The Shadegai pluton in the Wulashan area has shoshonitic affinity and I-type character, and is composed of syenogranites containing abundant mafic microgranular enclaves(MMEs). LA-MC-ICP-MS U-Pb data yield weighted mean 206 Pb/238 U ages of 222 ± 1 Ma and 221 ± 1 Ma for the syenogranites and MMEs, respectively, suggesting their coeval formation during the Late Triassic. The syenogranites have high SiO_2(70.42-72.30 wt%),K_2O(4.58-5.22 wt.%) and Na_2O(4.19-4.43 wt.%) contents but lower concentrations of P_2O_5(0.073-0.096 wt.%) and TiO_2(0.27-0.37 wt.%), and are categorized as I-type granites, rather than A-type granites, as previously thought. These syenogranites exhibit lower(^(87)Sr/^(86)Sr)i ratios(0.70532-0.70547) and strongly negative whole-rock εNd(t) values(-12.54 to-11.86) and zircon εHf(t) values(-17.81 to-10.77),as well as old Nd(1962-2017 Ma) and Hf(2023-2092 Ma) model ages, indicating that they were derived from the lower crust.Field and petrological observations reveal that the MMEs within the pluton probably represent magmatic globules commingled with their host magmas. Geochemically, these MMEs have low SiO_2(53.46-55.91 wt.%)but high FeOt(7.27-8.79 wt.%) contents. They are enriched in light rare earth elements(LREEs) and large ion lithophile elements(LILEs), and are depleted in heavy rare earth elements(HREEs) and high field strength elements(HFSEs). They have whole-rock(^(87)Sr/^(86)Sr)i ratios varying from 0.70551 to 0.70564, εNd(t) values of -10.63 to -9.82, and zircon εHf(t) values of -9.89 to 0.19. Their geochemical and isotopic features indicate that they were derived from the subcontinental lithospheric mantle mainly metasomatized by slab-derived fluids, with minor involvement of melts generated from the ascending asthenospheric mantle. Petrology integrated with elemental and isotopic geochemistry suggest that the Shadegai pluton was produced by crust-mantle interactions, i.e., partial melting of the lower continental crust induced by underplating of mantle-derived mafic magmas(including the subcontinental lithospheric mantle and asthenospheric mantle), and subsequent mixing of the mantle-and crust-derived magmas. In combination with existing geological data, it is inferred that the Shadegai pluton formed in a post-collisional extensional regime related to lithospheric delamination following the collision between the NCC and Mongolia arc terranes.展开更多
File format obsolescence is a major risk factor threatening the sustainability of and access to digital information. While the preservation community has become increasingly interested in tools for migration and trans...File format obsolescence is a major risk factor threatening the sustainability of and access to digital information. While the preservation community has become increasingly interested in tools for migration and transformation of file formats, the National Library of Australia is developing mechanisms specifically focused on monitoring and assessing the risks of file format obsolescence. This paper reports on the AONS II project, undertaken by the National Library of Australia (NLA) in conjunction with the Australian Partnership for Sustainable Repositories (APSR). The project aimed to develop a software tool which allows users to automatically monitor the status of file formats in their repositories, make risk assessments based on a core set of obsolescence risk questions, and receive notifications when file format risks change or other related events occur. This paper calls for the preservation community to develop a co-operating file format obsolescence community which includes registries, software tool creators and end users to effectively curate digital content in order to maintain long-term access.展开更多
Purpose:We present an analytical,open source and flexible natural language processing and text mining method for topic evolution,emerging topic detection and research trend forecasting for all kinds of data-tagged tex...Purpose:We present an analytical,open source and flexible natural language processing and text mining method for topic evolution,emerging topic detection and research trend forecasting for all kinds of data-tagged text.Design/methodology/approach:We make full use of the functions provided by the open source VOSviewer and Microsoft Office,including a thesaurus for data clean-up and a LOOKUP function for comparative analysis.Findings:Through application and verification in the domain of perovskite solar cells research,this method proves to be effective.Research limitations:A certain amount of manual data processing and a specific research domain background are required for better,more illustrative analysis results.Adequate time for analysis is also necessary.Practical implications:We try to set up an easy,useful,and flexible interdisciplinary text analyzing procedure for researchers,especially those without solid computer programming skills or who cannot easily access complex software.This procedure can also serve as a wonderful example for teaching information literacy.Originality/value:This text analysis approach has not been reported before.展开更多
MIXED is a digital preservation project. It uses a strategy of converting data to intermediate XML. In this paper we position this strategy with respect to the well-known emulation and migration strategies. Then we de...MIXED is a digital preservation project. It uses a strategy of converting data to intermediate XML. In this paper we position this strategy with respect to the well-known emulation and migration strategies. Then we detail the MIXED strategy and explain why it is an optimized, economical way of migration. Finally, we describe how DANS is implementing a software tool that can perform the migrations needed for this strategy.展开更多
TiO_(2)photocatalysts have been widely studied and applied for removing bacteria,but its antibacterial efficiency is limited to the ultraviolet(UV)range of the solar spectrum.In this work,we use the gold(Au)nanorods t...TiO_(2)photocatalysts have been widely studied and applied for removing bacteria,but its antibacterial efficiency is limited to the ultraviolet(UV)range of the solar spectrum.In this work,we use the gold(Au)nanorods to enhance the visible and near-infrared(NIR)light absorption of TiO_(2)NBs,a typical UV light photocatalyst,thus the enhancement of its full solar spectrum(UV,visible and NIR)photocatalytic antibacterial properties is achieved.Preliminary surface plasmon resonance(SPR)enhancement photocatalytic antibacterial mechanism is suggested.On one hand,transverse and longitudinal SPR of Au NRs is beneficial for visible and NIR light utilization.On the other hand,Au NRs combined with TiO_(2)NBs to form the heterostructure,which can improve the photogenerated carrier separation and direct electron transfer increases the hot electron concentration while Au NRs as the electron channel can well restrain charge recombination.finally produces the high yield of radical oxygen species and exhibits a superior antibacterial efficiency.Furthermore,we design a sterilization file cabinet with Au NR/TiO_(2)NB heterostructures as the photocatalytic coating plates.Our study reveals that Au NR/TiO_(2)NB heterostructure is a potential candidate for sterilization of bacteria and archives protection.展开更多
文摘High concentrations of environmental fungi in the archives repositories are dangerous for the documents preserved in those places and for the workers'health.The aims of this work were to evaluate the behavior of the fungal concentration and diversity in the indoor air of repositories of 3 archives located in Havana,Cuba,and to demonstrate the potential risk that these taxa represent for the documentary heritage preserved in these institutions.The indoor and outdoor environments were sampled with a biocollector.From the I/O ratios,it was evident that two of the studied archives were not contaminated,while one of them did show contamination despite having temperature and relative humidity values very similar to the other two.Aspergillus,Penicillium and Cladosporium were the predominant genera in the indoor environments.New finds for archival environments were the genera Harposporium and Scolecobasidium.The principal species classified ecologically as abundant were C.cladosporioides and P.citrinum.They are known as opportunistic pathogenic fungi.All the analyzed taxa excreted acids,the most of them degraded cellulose,starch and gelatin while about 48%excreted different pigments.But 33%of them showed the highest biodeteriogenic potential,evidencing that they are the most dangerous for the documentary collections.
文摘Advances in computing and communications mean that we can cost-effectively store every book, sound recording, movie, software package, and public Web page ever created, and provide access to these collections via the Intemet to students and adults all over the world. By mostly using existing institutions and funding sources, we can build this as well as compensate authors within the current worldwide library budget. We should take advantage of our new technologies and our open societies to make a Universal Library again, and go the next step and make all knowledge easily available to every man, woman and child around the world.
基金supported by Shandong Social Science Planning and Research Project in 2021(No.21CPYJ40).
文摘The purpose of introducing blockchain into electronic archives sharing and utilization is to break the information barrier between electronic archives sharing departments by relying on technologies such as smart contract and asymmetric encryption.Aiming at the problem of dynamic permission management in common access control methods,a new access control method based on smart contract under blockchain is proposed,which improves the intelligence level under blockchain technology.Firstly,the Internet attribute access control model based on smart contract is established.For the dynamic access of heterogeneous devices,the management contract,permission judgment contract and access control contract are designed;Secondly,the access object credit evaluation algorithm based on particle swarm optimization radial basis function(PSO-RBF)neural network is used to dynamically generate the access node credit threshold combined with the access policy,so as to realize the intelligent access right management method.Finally,combined with the abovemodels and algorithms,the workflow of electronic archives sharing and utilization model of multi blockchain is constructed.The experimental results show that the timeconsuming of the process increases linearly with the number of continuous access to electronic archives blocks,and the secure access control of sharing and utilization is feasible,secure and effective.
文摘Intemet era, mutual sharing, low cost, unlimited time and geographical restrictions on network dissemination, to the public toprovide a new way of entertainment experience and sharing in the network information resources at the same time, also highlights importantdrawbacks, mainly reflected the contradiction between resource sharing and copyright protection, sharing is often cyber source violated theright to network dissemination of information to the original author. With the rapid development of the Internet, the seriousness of this problemis becoming increasingly prominent. Based on the information construction of university archives management as the center to carry outresearch, improve the service level of university archives from the first two aspects discusses the necessity of the information constructionof the archives management, promoting the development of colleges and universities. Secondly introduces specific measures of realizing theinformatization construction of university archives management and archives management standardization, digitization, archives informationnetwork construction, the archives management personnel to conduct a comprehensive training. The fixed assets of university is an important partof the state-owned assets, and its asset management level is directly related to the safety of state-owned assets, the use efficiency of assets and thepromotion of the teaching and research level in universities. The university fixed assets data information management is an important aspect ofasset management, it provides decision-making basis for the management of fixed assets in colleges and universities, affecting the efficiency ofthe entire asset management.
文摘Navigated by the forces of the market economy mechanism, the development and utilization of human resources is key to guaranteeing the operation of public institutions .The personnel archive is a record of one＇s main experiences and performances, thus playing a vital role in the process of developing talents .This article mainly make an analysis of the main role and status of personnel archive information and the main means and contents of talents development.
文摘The Meteorological Archives of Inner Mongolia Autonomous Region is the largest professional meteorological archives in the Inner Mongolia region,and it is also the first national meteorological archives to be promoted to a national first-class archive management unit.Inner Mongolia Meteorological Archives now preserves more than 80,000 volumes of meteorological management files,meteorological observation records,meteorological scientific research files,and meteorological infrastructure files,providing the most fundamental support services for the development,research and application of meteorological services.
基金financially supported by the Ministry of Science,Technology and Environment(CITMA)of Cuba(Grant number I-2118025001).
文摘Environmental fungi can damage the documentary heritage conserved in archives and affect the personnel’s health if their concentrations,thermo-hygrometric parameters and ventilation conditions are not adequate,problems that can be accentuated by Climate Change.The aims of this work were to identify and to characterize the airborne fungal pollution of naturally ventilated repositories in the Provincial Historical Archive of Santiago de Cuba and predict the risk that these fungi pose to the staff’s health.Indoor air of three repositories of this archive and the outdoor air were sampled in an occasion every time in 2015,2016 and 2017 using a SAS sampler.The obtained fungal concentrations varied from 135.6 CFU/m^(3)to 421.1 CFU/m^(3)and the indoor/outdoor ratios fluctuated from 0.7 to 4.2,evidencing a variable environmental quality over time,but in the third sampling the repositories environments showed good quality.Aspergillus and Cladosporium were the predominant genera in these environments.A.flavus was a prevailed species in indoor air,while A.niger and Cl.cladosporioides were the species that showed the greatest similarities with the outdoor air.Coremiella and Talaromyces genera as well as the species Aspergillus uvarum,Alternaria ricini and Cladosporium staurophorum were the first findings for environments of Cuban archives.Xerophilic species(A.flavus,A.niger,A.ochraceus,A.ustus)indicators of moisture problems in the repositories were detected;they are also opportunistic pathogens and toxigenic species but their concentrations were higher than the recommended,demonstrating the potential risk to which the archive personnel is exposed in a circumstantial way.
文摘As an intangible asset with potential value, enterprise archives are the real records of enterprise production and operation, equipment renewal, scientific research and development, and the realistic evidence of product sales, contact contracts and legal disputes. They play an important role in the development of enterprises. In order to better promote the modern management of enterprises and scientifically, comprehensively, quickly and reasonably improve the management level of enterprise archives, the enterprise archives should be fully developed and utilized to improve its utilization effect, so as to make archives play the role of "booster" in enterprise services, and to maximize the value of archives in assisting enterprise development.
文摘The searching method of spatial information on traditional geo-archives catalog database(TGCD)is based on the text,and the result of retrieval can be only from the text of fields of relational database.The information queried must be input into the relational database as a text form in advance,otherwise,the visitors would not get any result from it.So.
文摘The Central Committee of the Communist Party of China(CPC)with Comrade Xi Jinping at its core made the decision to establish the National Archives of Publications and Culture(NAPC).The NAPC represents a foundational project for China's development as a great civilization and a landmark cultural initiative that will benefit generations to come.It fully embodies the CPC's profound consciousness in carrying forward and developing Chinese culture and its initiative in creating a brighter future by drawing on the wisdom of the past.
基金supported by The Special Funds for Natural Resource Development in Jiangsu Province(2200113-35)The Central Financial Geological Survey Project of the China Geological Survey(DD20230800702).
文摘The Ning-Wu Basin is an important part of the Middle-Lower Yangtze River Metallogenic Belt in eastern China.It contains well-preserved Mesozoic volcanic sequences that document significant geodynamic evolution.However,uncertainties surrounding the ages of eruptions and the temporal relationships between the four main volcanic cycles—the Longwangshan,Dawangshan,Gushan and Niangniangshan formations—have hindered our understanding of magmatic pulsation and its connection to iron mineralisation.Here,high-precision LA-ICP-MS zircon U-Pb dating of four fresh volcanic samples(one per formation)reveals weighted mean ages of 132.3±1.0 Ma(Longwangshan;MSWD=1.3),130.4±1.6 Ma(Dawangshan;MSWD=1.3),128.1±1.9 Ma(Gushan;MSWD=2.0)and 127.2±1.1 Ma(Niangniangshan;MSWD=0.23).These dates constrain volcanic activity to the Early Cretaceous Valanginian-Hauterivian interval and show a systematic trend of increasingly younger ages spanning~8 Ma(133-125 Ma).This magmatism can be subdivided into three phases:initiation(133-132 Ma),peak activity(132-130 Ma)and cessation(128-125 Ma).The episodic volcanism correlates with the accelerating rollback of the Pacific subduction zone,which drives crustal melting and asthenospheric upwelling.Notably,these cycles supplied the thermal energy,fluids and iron-rich melts that were essential for the formation of porphyritic iron deposits in the basin.By establishing a highresolution chronostratigraphic framework,this study sheds light on the spatiotemporal evolution of the Ning-Wu Basin,elucidating the coupling between crust-mantle dynamics,volcanic cyclicity and ore-forming processes across eastern China’s metallogenic belt.
基金supported by the National Natural Science Foundation of China(Nos.41888101,41721002)the National Key Research and Development Program of China(No.2022YFF0801101)+2 种基金the Fundamental Research Funds for the Central Universities,the China Postdoctoral Science Foundation(No.2022M713024)the CAS Youth Interdisciplinary Team(No.JCTD-2021-05)the Youth Innovation Promotion Association of the Chinese Academy of Sciences(No.2018498).
文摘The sediments of crater lakes are one of the ideal archives for high-resolution paleoenvironmental reconstruction.This paper presents sedimentary records of 21 crater lakes in monsoonal China and systematically discusses the geographical distribution and formation ages of these crater lakes.Sediment provenance of the crater lakes and its influencing factors were analyzed,and paleoenvironmental sequences and human activities records on different timescales reconstructed by crater lake sediments in monsoonal China were reviewed.The following points are highlighted:(1)Crater lakes in monsoonal China have been shown to preserve continuous long-time sediments that can exceed even 400 ka,although the chronology of some sediments in the southern part is debated and there were currently fewer long time records from the northern part;(2)the sediment provenance of crater lakes in northern China(e.g.,aeolian inputs)was different from that in the south(e.g.,the volcanic-lake rim),due to the different location and deposition conditions of crater lakes;(3)crater lake sediments have been used to reconstruct the history of climate changes on different timescales,but reconstruction studies of glacial-interglacial and decadal-annual scale records and studies of spatial comparisons of records on different timescales still need to be strengthened;(4)the anthropogenic signals,which include cultivation,logging,and industrial activity,are well documented in crater lake sediments from different areas and can therefore provide key evidence for the study of the Anthropocene.
文摘AIM: To investigate the effect of proton pump inhibitors (PPIs) on glycemic control (HbA1c) in type 2 diabetic patients. METHODS: A crosssectional study of consecutive in-patients admitted to hospital in any department during the fi rst semester of the year 2010 who had a recent HbA1c measurement. The study excluded those with a diagnosis of hyperglycemic decompensation, diabetic onset or pregnancy. It compared HbA1c levels of those taking PPIs and those not. RESULTS: A total of 97 patients were recruited. The average HbA1C level was 7.0% ± 1.2%. Overall PPI consumption was 55.7%. HbA1c was signif icantly lower in individuals who took PPIs: -0.6%, 95% CI: -0.12 to-0.83. People who used PPIs with some type of insulin therapy had a HbA1c reduction by -0.8%, 95% CI: -0.12 to -1.48. For the rest of subgroup analysis based on the antidiabetic drug used, PPI consumption always exhibited lower HbA1c levels. CONCLUSION: PPIs seems to be consistently associated with better glycemic control in type 2 diabetes. HbA1c reduction observed is similar to incretin-based therapies.
文摘This paper compares monthly and seasonal rain rates derived from the Version 5 （V5） and Version 6 （V6） TRMM Precipitation Radar （TPR, TSDIS reference 2A25）, TRMM Microwave Imager （TMI, 2A12）, TRMM Combined Instrument （TCI, 2B31）, TRMM calibrated IR rain estimates （3B42） and TRMM merged gauge and satellite analysis （3B43） algorithms over New Mexico （NM） with rain gauge analyses provided by the New Mexico water districts （WD）. The average rain rates over the NM region for 1998- 2002 are 0.91 mm d^-1 for WD and 0.75, 1.38, 1.49, 1.27, and 1.07 mm d^-1 for V5 3B43, 3B42, TMI, PR and TCA; and 0.74, 1.38, 0.87 and 0.97 mm d^-1 for V6 3B43, TMI, TPR and TCA, respectively. Comparison of V5 3B43 with WD rain rates and the daily TRMM mission index （TPR and TMI） suggests that the low bias of V5 3B43 for the wet months （summer to early fall） may be due to the non-inclusion of some rain events in the operational gauge analyses that. are used in the production of V5 3B43. Correlation analyses show that the WD rain rates vary in phase, with higher correlation between neighboring WDs. High temporal correlations （〉0.8） exist between WD and the combined algorithms （3B42, 3B43 and TCA for both V5 and V6） while satellite instrument algorithms （PR, TMI and TCI） are correlated best among themselves at the monthly scale. Paired t-tests of the monthly time series show that V5 3B42 and TMI are statistically different from the WD rain rates while no significant difference exists between WD and the other products. The agreements between the TRMM satellite and WD gauge estimates are best for the spring and fall and worst for winter and summer. The reduction in V6 TMI （-7.4%） and TPR （-31%） rain rates （compared to V5） results in better agreement between WD estimates and TMI in winter and TPR during summer.
基金supported by the Land and Resources Survey Project of China (Grant Nos. 1212011120725 and 12120113072200)
文摘Latest Permian to Triassic plutons are widespread in the northern North China Craton(NCC); most of them show calc-alkaline, high-K calc-alkaline, or alkaline geochemical features. The Shadegai pluton in the Wulashan area has shoshonitic affinity and I-type character, and is composed of syenogranites containing abundant mafic microgranular enclaves(MMEs). LA-MC-ICP-MS U-Pb data yield weighted mean 206 Pb/238 U ages of 222 ± 1 Ma and 221 ± 1 Ma for the syenogranites and MMEs, respectively, suggesting their coeval formation during the Late Triassic. The syenogranites have high SiO_2(70.42-72.30 wt%),K_2O(4.58-5.22 wt.%) and Na_2O(4.19-4.43 wt.%) contents but lower concentrations of P_2O_5(0.073-0.096 wt.%) and TiO_2(0.27-0.37 wt.%), and are categorized as I-type granites, rather than A-type granites, as previously thought. These syenogranites exhibit lower(^(87)Sr/^(86)Sr)i ratios(0.70532-0.70547) and strongly negative whole-rock εNd(t) values(-12.54 to-11.86) and zircon εHf(t) values(-17.81 to-10.77),as well as old Nd(1962-2017 Ma) and Hf(2023-2092 Ma) model ages, indicating that they were derived from the lower crust.Field and petrological observations reveal that the MMEs within the pluton probably represent magmatic globules commingled with their host magmas. Geochemically, these MMEs have low SiO_2(53.46-55.91 wt.%)but high FeOt(7.27-8.79 wt.%) contents. They are enriched in light rare earth elements(LREEs) and large ion lithophile elements(LILEs), and are depleted in heavy rare earth elements(HREEs) and high field strength elements(HFSEs). They have whole-rock(^(87)Sr/^(86)Sr)i ratios varying from 0.70551 to 0.70564, εNd(t) values of -10.63 to -9.82, and zircon εHf(t) values of -9.89 to 0.19. Their geochemical and isotopic features indicate that they were derived from the subcontinental lithospheric mantle mainly metasomatized by slab-derived fluids, with minor involvement of melts generated from the ascending asthenospheric mantle. Petrology integrated with elemental and isotopic geochemistry suggest that the Shadegai pluton was produced by crust-mantle interactions, i.e., partial melting of the lower continental crust induced by underplating of mantle-derived mafic magmas(including the subcontinental lithospheric mantle and asthenospheric mantle), and subsequent mixing of the mantle-and crust-derived magmas. In combination with existing geological data, it is inferred that the Shadegai pluton formed in a post-collisional extensional regime related to lithospheric delamination following the collision between the NCC and Mongolia arc terranes.
基金The author wishes to thank APSR and DEST for supporting this project.
文摘File format obsolescence is a major risk factor threatening the sustainability of and access to digital information. While the preservation community has become increasingly interested in tools for migration and transformation of file formats, the National Library of Australia is developing mechanisms specifically focused on monitoring and assessing the risks of file format obsolescence. This paper reports on the AONS II project, undertaken by the National Library of Australia (NLA) in conjunction with the Australian Partnership for Sustainable Repositories (APSR). The project aimed to develop a software tool which allows users to automatically monitor the status of file formats in their repositories, make risk assessments based on a core set of obsolescence risk questions, and receive notifications when file format risks change or other related events occur. This paper calls for the preservation community to develop a co-operating file format obsolescence community which includes registries, software tool creators and end users to effectively curate digital content in order to maintain long-term access.
文摘Purpose:We present an analytical,open source and flexible natural language processing and text mining method for topic evolution,emerging topic detection and research trend forecasting for all kinds of data-tagged text.Design/methodology/approach:We make full use of the functions provided by the open source VOSviewer and Microsoft Office,including a thesaurus for data clean-up and a LOOKUP function for comparative analysis.Findings:Through application and verification in the domain of perovskite solar cells research,this method proves to be effective.Research limitations:A certain amount of manual data processing and a specific research domain background are required for better,more illustrative analysis results.Adequate time for analysis is also necessary.Practical implications:We try to set up an easy,useful,and flexible interdisciplinary text analyzing procedure for researchers,especially those without solid computer programming skills or who cannot easily access complex software.This procedure can also serve as a wonderful example for teaching information literacy.Originality/value:This text analysis approach has not been reported before.
文摘MIXED is a digital preservation project. It uses a strategy of converting data to intermediate XML. In this paper we position this strategy with respect to the well-known emulation and migration strategies. Then we detail the MIXED strategy and explain why it is an optimized, economical way of migration. Finally, we describe how DANS is implementing a software tool that can perform the migrations needed for this strategy.
基金fundings from the National Natural Science Foundation of China(Nos.51872173,51772176)TaishanScholars Program of Shandong Province(Nos.tsqn201812068,tspd20161006)+6 种基金Higher School Youth Innovation Team of Shandong Province(No.2019KJA013)Key Research and Development Program of Shandong Province(No.2018GGX102028)Science and Technology Special Project of Qingdao City(No.20-3-4-3-nsh)the Opening Fund of State Key Laboratory of Heavy Oil Processing(No.SKLOP202002006)Cooperative Education Project of the Ministry of Education(No.201902195026)Humanities and Social Sciences Program(GoMoruo Studies)of the Education Department of Sichuan Province(No.GY2020C01)Shandong Archives Science and Technology Project(No.2020-33)。
文摘TiO_(2)photocatalysts have been widely studied and applied for removing bacteria,but its antibacterial efficiency is limited to the ultraviolet(UV)range of the solar spectrum.In this work,we use the gold(Au)nanorods to enhance the visible and near-infrared(NIR)light absorption of TiO_(2)NBs,a typical UV light photocatalyst,thus the enhancement of its full solar spectrum(UV,visible and NIR)photocatalytic antibacterial properties is achieved.Preliminary surface plasmon resonance(SPR)enhancement photocatalytic antibacterial mechanism is suggested.On one hand,transverse and longitudinal SPR of Au NRs is beneficial for visible and NIR light utilization.On the other hand,Au NRs combined with TiO_(2)NBs to form the heterostructure,which can improve the photogenerated carrier separation and direct electron transfer increases the hot electron concentration while Au NRs as the electron channel can well restrain charge recombination.finally produces the high yield of radical oxygen species and exhibits a superior antibacterial efficiency.Furthermore,we design a sterilization file cabinet with Au NR/TiO_(2)NB heterostructures as the photocatalytic coating plates.Our study reveals that Au NR/TiO_(2)NB heterostructure is a potential candidate for sterilization of bacteria and archives protection.
