The developed auxiliary software serves to simplify, standardize and facilitate the software loading of the structural organization of a complex technological system, as well as its further manipulation within the pro...The developed auxiliary software serves to simplify, standardize and facilitate the software loading of the structural organization of a complex technological system, as well as its further manipulation within the process of solving the considered technological system. Its help can be especially useful in the case of a complex structural organization of a technological system with a large number of different functional elements grouped into several technological subsystems. This paper presents the results of its application for a special complex technological system related to the reference steam block for the combined production of heat and electricity.展开更多
To resolve the control adaptability problem of TV media in complex competitive environment, a control system model of TV media organization structure was designed. Based on the designed system model for TV media organ...To resolve the control adaptability problem of TV media in complex competitive environment, a control system model of TV media organization structure was designed. Based on the designed system model for TV media organization structure, the relations among the main factors of the system constitution, missions, organizing decision entity, and carrying bodies were analyzed. By means of applying multi-objective decision method and complex control system theory, and combining the integration model of TV media organization structure, the basic model was concluded and the corresponding parameters were designed. The current organization process of TV media is analyzed by this model, which comes to the adaptability appearance with different parameters. The results indicate that the model can estimate current TV media organization structure for the chain appearance of communications and the correlation between platforms and policy-making agencies.展开更多
This study explores the impact of organization structure on human resource management in a bi-national organization Tanzania-Zambia Railway Authority (TAZARA). It is a bi-national organization because it is jointly ...This study explores the impact of organization structure on human resource management in a bi-national organization Tanzania-Zambia Railway Authority (TAZARA). It is a bi-national organization because it is jointly owned and managed by the two contacting states of the United Republic of Tanzania and the Republic of Zambia. Tanzania-Zambia Railway stretches 1,860 meters from the Port of Dares Salaam in East Africa to New Kapiri Mposhi in Zambia. The study seeks to provide answers to such questions as what is an organization structure. Can an organization structure affect human resource management in an organization? If so how? What type of organiTation structure can be appropriate for a bi-national organization? What are the advantages and the limitations of the organization structure designed for TAZARA? What measures can be taken to deal with the disadvantages? Organization structure refers to the formal arrangement of tasks, communication, and authority relationships that influence and control how people coordinate and conduct their work (Martin & Fellenz, 2010). The study was undertaken within phenomenological paradigm due to the nature of the inquiry of the impact of the organization structure on a bi-national organization concerned with the relationships of actors such as governments as both institutions and employers and employees as individuals and groups. Phenomenological paradigm is concerned with the understanding of human behavior from the participants' frame of reference. The study was designed as a case study where the researcher explores a phenomenon (case) in this case ( the organization structure) bounded in time and activity (in this case TAZARA as an institution) and collects data using a variety of procedures during a sustained period of time. It was appropriate for exploring, understanding, and obtaining in depth knowledge of understanding the impact of organization structure on a bi-national organization Tanzania-Zambia Railway Authority, which is divided into two regions and the Head office. Both primary and secondary data were collected from the two regions and the Head office. Primary data were collected by focus group discussion, and structured interviews and questionnaires while secondary data were collected by archival method, organization documents, books, and news papers. Data were analyzed using both qualitative and quantitative methods by triangulation techniques. Sample size comprised eight governments and Board of Directors officials, 35 Management officials, 11 trade union officials and 58 focus group members from seven discussions groups, and bring the total to 112. The study revealed that the organization structure has both advantages and limitations. From governments' perspective the structure provides the means of maintaining equal commitment, ownership, and management of the organization by the two contracting states, while the business perspective has identified two limitations. First, the three-tier structure is expensive because of duplication of duties. Second, the involvement of government officials in managing the organization brings in government bureaucracy which should be avoided in business due to slow decision making. Efforts to change the structure to make it business, as so far have proved futile due to governments' reluctance to refinquish power as this will be seen as reducing their commitment to the organization.展开更多
Taking agricultural organization in China's southwestern mountainous regions as research object,on the basis of analysis of the status quo of agricultural organization development in China's southwestern mount...Taking agricultural organization in China's southwestern mountainous regions as research object,on the basis of analysis of the status quo of agricultural organization development in China's southwestern mountainous regions,we use related theoretical knowledge on economics and organization science,we probe into the process of innovation and mechanism of action concerning the structure of agricultural organization in China's southwestern mountainous regions over the past 30 years.Finally we draw several general conclusions regarding structure innovation of agricultural organization in China's southwestern mountainous regions as follows:first,the structure innovation of agricultural organization,a gradual process,proceeds ceaselessly along with ongoing progress and development of agriculture,and in this process,farmers always play a fundamental role;second,the structure innovation of agricultural organization is affected by many factors,and government institutional arrangement and change in market conditions is undoubtedly the most critical factor;third,the probable evolving direction of structure innovation of agricultural organization includes internal differentiation of the same form of agricultural organization,association of different forms of agricultural organization,and emergence of other forms of agricultural organization.展开更多
Capital structure is one of the important research aspects of corporate finance. According to methodology, the capital structure research can be classified into two categories: the paradigm of uni-corporation and the...Capital structure is one of the important research aspects of corporate finance. According to methodology, the capital structure research can be classified into two categories: the paradigm of uni-corporation and the paradigm of industry organization. Traditional capital structure research can be attribute to uni-corporation aspect. This paper reviews all literatures concerning the paradigm of industry organization and illustrates the inter-relationship among the feature of industry, the feature of suppliers and customers, the competitive strategy, product life cycle and capital structure.展开更多
Zeolite synthesis in contemporary chemical industries is predominantly conducted using organic structure‐directing agents(OSDAs),which are chronically hazardous to humans and the environment.It is a growing trend to ...Zeolite synthesis in contemporary chemical industries is predominantly conducted using organic structure‐directing agents(OSDAs),which are chronically hazardous to humans and the environment.It is a growing trend to develop an eco‐friendly and nuisanceless OSDA for zeolite synthesis.Herein,choline is employed as a non‐toxic and green OSDA to synthesize high silica Y zeolite with SiO2/Al2O3 ratios of 6.5–6.8.The prepared Y zeolite samples exhibited outstanding(hydro)thermal stability at ultrahigh temperature owing to the higher SiO2/Al2O3 ratio.The XRF,SEM,29Si‐NMR and 13Na+results suggested that choline plays a structure‐directing role in the synthesis of Y zeolite,while the feed molar fraction of Na+is a crucial determinant for the framework SiO2/Al2O3 ratio and the crystal morphology.展开更多
A plasma cladding experiment was carried out to investigate the characteristics(surface hardness,microstructure,friction,wear properties from different substrates to the cladding layer and the bond strength)of plasma ...A plasma cladding experiment was carried out to investigate the characteristics(surface hardness,microstructure,friction,wear properties from different substrates to the cladding layer and the bond strength)of plasma cladding Fe-Cr-Nb-Si-Mo alloy cladding layers on different substrates.In order to improve the abrasion resistance of the scraper middle trough,the plasma cladding technique was used to clad the alloy ceramic powder Ig7 on the surface of the middle trough NM450,WH60A,Hardox450,and Weartuf450 to create Fe/Cr/Nb/Mo/V cladding layer.Based on the experiment results,the microstructure,friction and wear properties of the four cladding layers were analyzed,and the bond strength between the cladding layer and the substrate was also tested.The experimental results show that the main phases of the four cladding layers are martensite and all kinds of metal carbides((Nb,Mo)C,VC,and Cr7C3).WH60A surface cladding layer has shown good friction and wear properties.展开更多
To collect and share information of projects or products and make it consistent and correct so that the quality and costs of projects can be effectively controlled,an integrative project architecture integrating diffe...To collect and share information of projects or products and make it consistent and correct so that the quality and costs of projects can be effectively controlled,an integrative project architecture integrating different types of breakdown structures is necessary.In this paper,the international research status on work breakdown structure(WBS)was analyzed,and an integrative project architecture for commercial aero-engines was designed,where product breakdown structure(PBS),WBS,organization breakdown structure(OBS)and cost breakdown structure(CBS)were integrated and built.And the architecture was applied in information systems.A transfer from technological views of complex products through their lifecycles to management views has been realized with this standardized architecture,thus development tasks and costs can be controlled.展开更多
Exploration of soil environmental characteristics governing soil microbial community structure and activity may improve our understanding of biogeochemical processes and soil quality. The impact of soil environmental ...Exploration of soil environmental characteristics governing soil microbial community structure and activity may improve our understanding of biogeochemical processes and soil quality. The impact of soil environmental characteristics especially organic carbon availability after 15-yr different organic and inorganic fertilizer inputs on soil bacterial community structure and functional metabolic diversity of soil microbial communities were evaluated in a 15-yr fertilizer experiment in Changping County, Beijing, China. The experiment was a wheat-maize rotation system which was established in 1991 including four different fertilizer treatments. These treatments included: a non-amended control(CK), a commonly used application rate of inorganic fertilizer treatment(NPK); a commonly used application rate of inorganic fertilizer with swine manure incorporated treatment(NPKM), and a commonly used application rate of inorganic fertilizer with maize straw incorporated treatment(NPKS). Denaturing gradient gel electrophoresis(DGGE) of the 16 S r RNA gene was used to determine the bacterial community structure and single carbon source utilization profiles were determined to characterize the microbial community functional metabolic diversity of different fertilizer treatments using Biolog Eco plates. The results indicated that long-term fertilized treatments significantly increased soil bacterial community structure compared to CK. The use of inorganic fertilizer with organic amendments incorporated for long term(NPKM, NPKS) significantly promoted soil bacterial structure than the application of inorganic fertilizer only(NPK), and NPKM treatment was the most important driver for increases in the soil microbial community richness(S) and structural diversity(H). Overall utilization of carbon sources by soil microbial communities(average well color development, AWCD) and microbial substrate utilization diversity and evenness indices(H' and E) indicated that long-term inorganic fertilizer with organic amendments incorporated(NPKM, NPKS) could significantly stimulate soil microbial metabolic activity and functional diversity relative to CK, while no differences of them were found between NPKS and NPK treatments. Principal component analysis(PCA) based on carbon source utilization profiles also showed significant separation of soil microbial community under long-term fertilization regimes and NPKM treatment was significantly separated from the other three treatments primarily according to the higher microbial utilization of carbohydrates, carboxylic acids, polymers, phenolic compounds, and amino acid, while higher utilization of amines/amides differed soil microbial community in NPKS treatment from those in the other three treatments. Redundancy analysis(RDA) indicated that soil organic carbon(SOC) availability, especially soil microbial biomass carbon(Cmic) and Cmic/SOC ratio are the key factors of soil environmental characteristics contributing to the increase of both soil microbial community structure and functional metabolic diversity in the long-term fertilization trial. Our results showed that long-term inorganic fertilizer and swine manure application could significantly improve soil bacterial community structure and soil microbial metabolic activity through the increases in SOC availability, which could provide insights into the sustainable management of China's soil resource.展开更多
The desert plant Hedysarum scoparium uses leaflets and rachises as its photosynthetic organs. The abundance of leaflets was lower under unfavorable environmental conditions and higher with improved water conditions. T...The desert plant Hedysarum scoparium uses leaflets and rachises as its photosynthetic organs. The abundance of leaflets was lower under unfavorable environmental conditions and higher with improved water conditions. To examine the characteristics associated with the adaptation of H. scoparium to its environment, we selected plants with both compound leaves and rachis without leaflets to study the anatomical structures and gas exchange characteristics of the two organs. The results show that the water storage tissues in rachises were more developed compared with the leaflets. The diurnal courses of the net photosynthetic rate for the rachis and the leaflet were both in a bimodal pattern. Meanwhile, both two peak values of the rachis were significantly higher than those of the leaflet. The daily average transpiration rate was significantly higher in the rachis than in the leaflet in order to lower the temperature of the rachises. It was concluded that under desert drought conditions, the leaflets of H. scoparium were partially or completely degraded to reduce the transpiration area as an adaptive response to water deficit, and only the rachises were retained as photosynthetic organ. The rachises were found to be better suited to a desert habitat than the leaflets.展开更多
A high-efficiency green phosphorescent organic light emitting diode with a simplified structure is achieved that is free of a hole transport layer. The design of this kind of device structure not only saves the consum...A high-efficiency green phosphorescent organic light emitting diode with a simplified structure is achieved that is free of a hole transport layer. The design of this kind of device structure not only saves the consumption of organic materials but also greatly reduces the structural heterogeneities and effectively facilitates the charge injection into the emissive layer. The resulting green phosphorescent organic light-emitting diodes (PHOLEDs) exhibit higher electroluminescent efficiency. The maximum external quantum efficiency and current efficiency reach 23.7% and 88 cd/A, respectively. Moreover the device demonstrates satisfactory stability, keeping 23.7% and 88cd/A, 22% and 82cd/A, respectively, at a luminance of 100 and 1000cd/m2. The working mechanism for achieving high efficiency based on such a simple device structure is discussed correspondingly. The improved charge carrier injection and transport balance are proved to prominently contribute to achieve the high efficiency and great stability at high luminance in the green PHOLEDs.展开更多
A new organic semiconductor tartaric acid doped salt of emeraldine polyaniline (PANI-C 4H 6O 6) has been obtained by the method of oxidative polymerization of monomeric aniline with ammonium persulfate in acidic solut...A new organic semiconductor tartaric acid doped salt of emeraldine polyaniline (PANI-C 4H 6O 6) has been obtained by the method of oxidative polymerization of monomeric aniline with ammonium persulfate in acidic solution. The structure was characterized by Fourier Transform Infrared technique (FTIR) and X-ray diffraction (XRD). The temperature dependence dc conductivity δ dc ( T ) shows a semiconductor behavior and follows the quasi one dimensional variable range hopping (Q1D-VRH) model. Data on δ dc ( T ) are also discussed.展开更多
Owing to the heterogeneity between functional units and resource scarcity,manufacturing firms have been struggling with intra-organizational coordination for productivity and innovation.Traditional organizational stru...Owing to the heterogeneity between functional units and resource scarcity,manufacturing firms have been struggling with intra-organizational coordination for productivity and innovation.Traditional organizational structures,such as linear-functional and matrix,may cause responsibility division and independent goals(Shahani,2020),and are more difficult to be adopted by large-sized innovative manufacturing firms for quantity production.This is based on a review of several new forms of organization(i.e.,network organization,multiteam system,and platform organization)compared with the traditional forms of organization(i.e.,linear,matrix,and business unit organization,among others).This study proposes a three-dimensional(3D)magic-cube organizational structure,considering the product dimensions,business,and administration.Moreover,the characteristics,propositions of system operation,system dynamic model,and working model of the 3D magic-cube organization are described.Finally,the 3D model is applied in a Chinese manufacturing firm to test its effectiveness.By redesigning the post and pay system,the pilot organization establishes a project-driven and cross-functional coordination mechanism,positively affecting the firm’s financial profit,output value,labor productivity,and income of per capita.The proposed 3D model can be adopted by large-or medium-sized manufacturing firms for product development and innovation.The implications of both practice and theory are also discussed in this study.展开更多
Organizing unstructured information from books into a well-defined structure is a significant challenge in digital libraries.Most digital libraries can provide only search services at the granularity of books and few ...Organizing unstructured information from books into a well-defined structure is a significant challenge in digital libraries.Most digital libraries can provide only search services at the granularity of books and few libraries allow books to be accessed at the granularity of chapters,as manually constructing directory information for books is time-consuming.Extracting structured data from scanned books thus remains an urgent and important work.In this paper,we propose a novel structured data organization framework called CMSOF to organize scanned data automatically,and apply it to a Chinese medicine digital library. In the framework,image blocks and text blocks on the scanned page of books are separated based on the gray histogram projection method or a hybrid method of region growth and the Ada-Boosting classifier at first,and then the text structure is obtained from text blocks by text size and font type recognition.Finally,image blocks and structured OCRed text are correlated at the semantic level.By integrating the structured data into a Chinese medicine information system(CMIS) ,we can organize the Chinese medicine books well and users can access the books with flexibility,which indicates that CMSOF is an efficient framework to organize books mixed with images and text.展开更多
To visualize the structure and organization of the brain is a fundamental requirement in the research of neuroscience. Here, combining with two-photon excitation fluorescence microscopy and transgenetic mouse GAD67,we...To visualize the structure and organization of the brain is a fundamental requirement in the research of neuroscience. Here, combining with two-photon excitation fluorescence microscopy and transgenetic mouse GAD67,we demonstrate a custom-built second harmonic generation(SHG) microscope to discriminate brain layers and sub regions in the cerebellum and brain stem slices with cellular resolution. In particular, the cell densities of neurons in different brain layers are extracted due to the cell soma appearing as dark shadow on an SHG image.Further, the axon initial segments of the Purkinje cell are easily recognized without labeling, which would be useful for guiding micropipettes for electrophysiology.展开更多
The entropy balance equation that describes the entropy budget of atmospheric systems is derived from the Gibbs relation.The distribution of the entropy flows of a west-Pacific typhoon and a Bengal-Bay cyclone is calc...The entropy balance equation that describes the entropy budget of atmospheric systems is derived from the Gibbs relation.The distribution of the entropy flows of a west-Pacific typhoon and a Bengal-Bay cyclone is calculated and thus the dissipativity of the atmospheric systems is revealed.展开更多
In time of peace, the navy adopts a leadership system that combines operational command with building and administration, and which mainly consists of the navy headquarters, fleets, test bases, educational institution...In time of peace, the navy adopts a leadership system that combines operational command with building and administration, and which mainly consists of the navy headquarters, fleets, test bases, educational institutions and an armaments academy. The navy has three fleets, namely, the Beihai Fleet, Donghai Fleet and Nanhai Fleet,展开更多
To set up self-rule organizations forsocial life of the mass at city’s local level isnot uncommon in other countries.But toset up a resident committee of completestructure and with overall functions thatserves as an ...To set up self-rule organizations forsocial life of the mass at city’s local level isnot uncommon in other countries.But toset up a resident committee of completestructure and with overall functions thatserves as an intermediate between the localpolitical organization and family units issomething peculiar to China.Then。展开更多
A variety of phenyl alkyl sulfides were oxidized enantioselectively with NaIO_4 in chiral micellar systems formed from eight chiral surfactants,to give optical active sulfoxides.The enantiomer excesses ranged from 1.6...A variety of phenyl alkyl sulfides were oxidized enantioselectively with NaIO_4 in chiral micellar systems formed from eight chiral surfactants,to give optical active sulfoxides.The enantiomer excesses ranged from 1.6 to 15.0%.To understand the mechanistic detail of this asymmetric oxi- dation in chiral micelle,the effects of structure both in substrates and surfactants on the optical yield of the oxidation were studied and discussed.Generally,increasing the alkyl chain length both in sur- factants and in substrates enhances the optical yield,also the surfactant with hydroxy group at its appropriate position gives better enantioselectivity,suggesting the enzymic characteristics of the chiral micelle.展开更多
The nonlinear optical (NLO) and optical limiting (OL) properties of three new structures of organic NLO guest host Poly(N-vinylcarbozole)/disperse orange 3 (PVK/DO3), PVK/disperse orange 13 (PVK/DO13). and P...The nonlinear optical (NLO) and optical limiting (OL) properties of three new structures of organic NLO guest host Poly(N-vinylcarbozole)/disperse orange 3 (PVK/DO3), PVK/disperse orange 13 (PVK/DO13). and PVK/disperse orange 25 (PVK/DO25) as a solution at different concentrations and as a thin-film sample are studied using continuous wave z-scan system at 532 nm. The open-aperture z-scan data of the NLO materials in the solution and thin-film samples displayed two-photon and saturable absorptions, respectively. The PVK/DO13 exhibites the largest and best values of the nonlinearities, such as n2, β, X(3) compared with those of PVK/DO3 and PVK/DO25. This nonlinearity increases as the concentration increases. Tile results indicate that these NLO materials are good candidates for optical switching and OL devices.展开更多
文摘The developed auxiliary software serves to simplify, standardize and facilitate the software loading of the structural organization of a complex technological system, as well as its further manipulation within the process of solving the considered technological system. Its help can be especially useful in the case of a complex structural organization of a technological system with a large number of different functional elements grouped into several technological subsystems. This paper presents the results of its application for a special complex technological system related to the reference steam block for the combined production of heat and electricity.
文摘To resolve the control adaptability problem of TV media in complex competitive environment, a control system model of TV media organization structure was designed. Based on the designed system model for TV media organization structure, the relations among the main factors of the system constitution, missions, organizing decision entity, and carrying bodies were analyzed. By means of applying multi-objective decision method and complex control system theory, and combining the integration model of TV media organization structure, the basic model was concluded and the corresponding parameters were designed. The current organization process of TV media is analyzed by this model, which comes to the adaptability appearance with different parameters. The results indicate that the model can estimate current TV media organization structure for the chain appearance of communications and the correlation between platforms and policy-making agencies.
文摘This study explores the impact of organization structure on human resource management in a bi-national organization Tanzania-Zambia Railway Authority (TAZARA). It is a bi-national organization because it is jointly owned and managed by the two contacting states of the United Republic of Tanzania and the Republic of Zambia. Tanzania-Zambia Railway stretches 1,860 meters from the Port of Dares Salaam in East Africa to New Kapiri Mposhi in Zambia. The study seeks to provide answers to such questions as what is an organization structure. Can an organization structure affect human resource management in an organization? If so how? What type of organiTation structure can be appropriate for a bi-national organization? What are the advantages and the limitations of the organization structure designed for TAZARA? What measures can be taken to deal with the disadvantages? Organization structure refers to the formal arrangement of tasks, communication, and authority relationships that influence and control how people coordinate and conduct their work (Martin & Fellenz, 2010). The study was undertaken within phenomenological paradigm due to the nature of the inquiry of the impact of the organization structure on a bi-national organization concerned with the relationships of actors such as governments as both institutions and employers and employees as individuals and groups. Phenomenological paradigm is concerned with the understanding of human behavior from the participants' frame of reference. The study was designed as a case study where the researcher explores a phenomenon (case) in this case ( the organization structure) bounded in time and activity (in this case TAZARA as an institution) and collects data using a variety of procedures during a sustained period of time. It was appropriate for exploring, understanding, and obtaining in depth knowledge of understanding the impact of organization structure on a bi-national organization Tanzania-Zambia Railway Authority, which is divided into two regions and the Head office. Both primary and secondary data were collected from the two regions and the Head office. Primary data were collected by focus group discussion, and structured interviews and questionnaires while secondary data were collected by archival method, organization documents, books, and news papers. Data were analyzed using both qualitative and quantitative methods by triangulation techniques. Sample size comprised eight governments and Board of Directors officials, 35 Management officials, 11 trade union officials and 58 focus group members from seven discussions groups, and bring the total to 112. The study revealed that the organization structure has both advantages and limitations. From governments' perspective the structure provides the means of maintaining equal commitment, ownership, and management of the organization by the two contracting states, while the business perspective has identified two limitations. First, the three-tier structure is expensive because of duplication of duties. Second, the involvement of government officials in managing the organization brings in government bureaucracy which should be avoided in business due to slow decision making. Efforts to change the structure to make it business, as so far have proved futile due to governments' reluctance to refinquish power as this will be seen as reducing their commitment to the organization.
基金Supported by the 2010 Planning Project in Research Center of Development Ability of the West Regions in China (XNSDX01-003)Graduates Innovation Foundation in Guizhou University (2011045)The 2010 Research Project in Development Strategy Research Center in Karst Regions (KSTX01-002)
文摘Taking agricultural organization in China's southwestern mountainous regions as research object,on the basis of analysis of the status quo of agricultural organization development in China's southwestern mountainous regions,we use related theoretical knowledge on economics and organization science,we probe into the process of innovation and mechanism of action concerning the structure of agricultural organization in China's southwestern mountainous regions over the past 30 years.Finally we draw several general conclusions regarding structure innovation of agricultural organization in China's southwestern mountainous regions as follows:first,the structure innovation of agricultural organization,a gradual process,proceeds ceaselessly along with ongoing progress and development of agriculture,and in this process,farmers always play a fundamental role;second,the structure innovation of agricultural organization is affected by many factors,and government institutional arrangement and change in market conditions is undoubtedly the most critical factor;third,the probable evolving direction of structure innovation of agricultural organization includes internal differentiation of the same form of agricultural organization,association of different forms of agricultural organization,and emergence of other forms of agricultural organization.
文摘Capital structure is one of the important research aspects of corporate finance. According to methodology, the capital structure research can be classified into two categories: the paradigm of uni-corporation and the paradigm of industry organization. Traditional capital structure research can be attribute to uni-corporation aspect. This paper reviews all literatures concerning the paradigm of industry organization and illustrates the inter-relationship among the feature of industry, the feature of suppliers and customers, the competitive strategy, product life cycle and capital structure.
基金supported by the National Natural Science Foundation of China(Grant No.21802136)~~
文摘Zeolite synthesis in contemporary chemical industries is predominantly conducted using organic structure‐directing agents(OSDAs),which are chronically hazardous to humans and the environment.It is a growing trend to develop an eco‐friendly and nuisanceless OSDA for zeolite synthesis.Herein,choline is employed as a non‐toxic and green OSDA to synthesize high silica Y zeolite with SiO2/Al2O3 ratios of 6.5–6.8.The prepared Y zeolite samples exhibited outstanding(hydro)thermal stability at ultrahigh temperature owing to the higher SiO2/Al2O3 ratio.The XRF,SEM,29Si‐NMR and 13Na+results suggested that choline plays a structure‐directing role in the synthesis of Y zeolite,while the feed molar fraction of Na+is a crucial determinant for the framework SiO2/Al2O3 ratio and the crystal morphology.
基金Funded by the NSFC-Shanxi Coal Based Low Carbon Joint Fund Focused on Supporting Project(No.U1510205)the Shandong Province Key Laboratory of Mine Mechanical Engineering(No.2019KLMM210)the Key Research and Development(R&D)Projects of Shanxi Province(No.201903D121065)。
文摘A plasma cladding experiment was carried out to investigate the characteristics(surface hardness,microstructure,friction,wear properties from different substrates to the cladding layer and the bond strength)of plasma cladding Fe-Cr-Nb-Si-Mo alloy cladding layers on different substrates.In order to improve the abrasion resistance of the scraper middle trough,the plasma cladding technique was used to clad the alloy ceramic powder Ig7 on the surface of the middle trough NM450,WH60A,Hardox450,and Weartuf450 to create Fe/Cr/Nb/Mo/V cladding layer.Based on the experiment results,the microstructure,friction and wear properties of the four cladding layers were analyzed,and the bond strength between the cladding layer and the substrate was also tested.The experimental results show that the main phases of the four cladding layers are martensite and all kinds of metal carbides((Nb,Mo)C,VC,and Cr7C3).WH60A surface cladding layer has shown good friction and wear properties.
文摘To collect and share information of projects or products and make it consistent and correct so that the quality and costs of projects can be effectively controlled,an integrative project architecture integrating different types of breakdown structures is necessary.In this paper,the international research status on work breakdown structure(WBS)was analyzed,and an integrative project architecture for commercial aero-engines was designed,where product breakdown structure(PBS),WBS,organization breakdown structure(OBS)and cost breakdown structure(CBS)were integrated and built.And the architecture was applied in information systems.A transfer from technological views of complex products through their lifecycles to management views has been realized with this standardized architecture,thus development tasks and costs can be controlled.
基金funded by the National Natural Science Foundation of China(NSFC31301843)the National Nonprofit Institute Research Grant of Chinese Academy of Agricultural Sciences(IARRP-202-5)
文摘Exploration of soil environmental characteristics governing soil microbial community structure and activity may improve our understanding of biogeochemical processes and soil quality. The impact of soil environmental characteristics especially organic carbon availability after 15-yr different organic and inorganic fertilizer inputs on soil bacterial community structure and functional metabolic diversity of soil microbial communities were evaluated in a 15-yr fertilizer experiment in Changping County, Beijing, China. The experiment was a wheat-maize rotation system which was established in 1991 including four different fertilizer treatments. These treatments included: a non-amended control(CK), a commonly used application rate of inorganic fertilizer treatment(NPK); a commonly used application rate of inorganic fertilizer with swine manure incorporated treatment(NPKM), and a commonly used application rate of inorganic fertilizer with maize straw incorporated treatment(NPKS). Denaturing gradient gel electrophoresis(DGGE) of the 16 S r RNA gene was used to determine the bacterial community structure and single carbon source utilization profiles were determined to characterize the microbial community functional metabolic diversity of different fertilizer treatments using Biolog Eco plates. The results indicated that long-term fertilized treatments significantly increased soil bacterial community structure compared to CK. The use of inorganic fertilizer with organic amendments incorporated for long term(NPKM, NPKS) significantly promoted soil bacterial structure than the application of inorganic fertilizer only(NPK), and NPKM treatment was the most important driver for increases in the soil microbial community richness(S) and structural diversity(H). Overall utilization of carbon sources by soil microbial communities(average well color development, AWCD) and microbial substrate utilization diversity and evenness indices(H' and E) indicated that long-term inorganic fertilizer with organic amendments incorporated(NPKM, NPKS) could significantly stimulate soil microbial metabolic activity and functional diversity relative to CK, while no differences of them were found between NPKS and NPK treatments. Principal component analysis(PCA) based on carbon source utilization profiles also showed significant separation of soil microbial community under long-term fertilization regimes and NPKM treatment was significantly separated from the other three treatments primarily according to the higher microbial utilization of carbohydrates, carboxylic acids, polymers, phenolic compounds, and amino acid, while higher utilization of amines/amides differed soil microbial community in NPKS treatment from those in the other three treatments. Redundancy analysis(RDA) indicated that soil organic carbon(SOC) availability, especially soil microbial biomass carbon(Cmic) and Cmic/SOC ratio are the key factors of soil environmental characteristics contributing to the increase of both soil microbial community structure and functional metabolic diversity in the long-term fertilization trial. Our results showed that long-term inorganic fertilizer and swine manure application could significantly improve soil bacterial community structure and soil microbial metabolic activity through the increases in SOC availability, which could provide insights into the sustainable management of China's soil resource.
基金supported by the National Natu-ral Sciences Foundation of China (40771005 30870382)+1 种基金the CAS (Chinese Academy of Sciences) Action Plan for West Development Project (KZCX2-XB2-04-01KZCX2-XB2-09-03)
文摘The desert plant Hedysarum scoparium uses leaflets and rachises as its photosynthetic organs. The abundance of leaflets was lower under unfavorable environmental conditions and higher with improved water conditions. To examine the characteristics associated with the adaptation of H. scoparium to its environment, we selected plants with both compound leaves and rachis without leaflets to study the anatomical structures and gas exchange characteristics of the two organs. The results show that the water storage tissues in rachises were more developed compared with the leaflets. The diurnal courses of the net photosynthetic rate for the rachis and the leaflet were both in a bimodal pattern. Meanwhile, both two peak values of the rachis were significantly higher than those of the leaflet. The daily average transpiration rate was significantly higher in the rachis than in the leaflet in order to lower the temperature of the rachises. It was concluded that under desert drought conditions, the leaflets of H. scoparium were partially or completely degraded to reduce the transpiration area as an adaptive response to water deficit, and only the rachises were retained as photosynthetic organ. The rachises were found to be better suited to a desert habitat than the leaflets.
基金Supported by the Nanjing University of Telecommunication and Posts under Grant No NY212010the National Natural Science Foundation of China under Grant Nos 91233117,50973104 and 51333007+2 种基金the Natural Science Fund of Jiangsu Province under Grant No BK2012834the National Basic Research Program of China under Grant No 2015CB932200the Priority Academic Program Development of Jiangsu Higher Education Institutions
文摘A high-efficiency green phosphorescent organic light emitting diode with a simplified structure is achieved that is free of a hole transport layer. The design of this kind of device structure not only saves the consumption of organic materials but also greatly reduces the structural heterogeneities and effectively facilitates the charge injection into the emissive layer. The resulting green phosphorescent organic light-emitting diodes (PHOLEDs) exhibit higher electroluminescent efficiency. The maximum external quantum efficiency and current efficiency reach 23.7% and 88 cd/A, respectively. Moreover the device demonstrates satisfactory stability, keeping 23.7% and 88cd/A, 22% and 82cd/A, respectively, at a luminance of 100 and 1000cd/m2. The working mechanism for achieving high efficiency based on such a simple device structure is discussed correspondingly. The improved charge carrier injection and transport balance are proved to prominently contribute to achieve the high efficiency and great stability at high luminance in the green PHOLEDs.
文摘A new organic semiconductor tartaric acid doped salt of emeraldine polyaniline (PANI-C 4H 6O 6) has been obtained by the method of oxidative polymerization of monomeric aniline with ammonium persulfate in acidic solution. The structure was characterized by Fourier Transform Infrared technique (FTIR) and X-ray diffraction (XRD). The temperature dependence dc conductivity δ dc ( T ) shows a semiconductor behavior and follows the quasi one dimensional variable range hopping (Q1D-VRH) model. Data on δ dc ( T ) are also discussed.
基金This study is supported by the Key Project of the National Natural ScienceFoundation of China(Grant No.72132001).
文摘Owing to the heterogeneity between functional units and resource scarcity,manufacturing firms have been struggling with intra-organizational coordination for productivity and innovation.Traditional organizational structures,such as linear-functional and matrix,may cause responsibility division and independent goals(Shahani,2020),and are more difficult to be adopted by large-sized innovative manufacturing firms for quantity production.This is based on a review of several new forms of organization(i.e.,network organization,multiteam system,and platform organization)compared with the traditional forms of organization(i.e.,linear,matrix,and business unit organization,among others).This study proposes a three-dimensional(3D)magic-cube organizational structure,considering the product dimensions,business,and administration.Moreover,the characteristics,propositions of system operation,system dynamic model,and working model of the 3D magic-cube organization are described.Finally,the 3D model is applied in a Chinese manufacturing firm to test its effectiveness.By redesigning the post and pay system,the pilot organization establishes a project-driven and cross-functional coordination mechanism,positively affecting the firm’s financial profit,output value,labor productivity,and income of per capita.The proposed 3D model can be adopted by large-or medium-sized manufacturing firms for product development and innovation.The implications of both practice and theory are also discussed in this study.
基金Project supported by the China Academic Digital Associative Library(CADAL)
文摘Organizing unstructured information from books into a well-defined structure is a significant challenge in digital libraries.Most digital libraries can provide only search services at the granularity of books and few libraries allow books to be accessed at the granularity of chapters,as manually constructing directory information for books is time-consuming.Extracting structured data from scanned books thus remains an urgent and important work.In this paper,we propose a novel structured data organization framework called CMSOF to organize scanned data automatically,and apply it to a Chinese medicine digital library. In the framework,image blocks and text blocks on the scanned page of books are separated based on the gray histogram projection method or a hybrid method of region growth and the Ada-Boosting classifier at first,and then the text structure is obtained from text blocks by text size and font type recognition.Finally,image blocks and structured OCRed text are correlated at the semantic level.By integrating the structured data into a Chinese medicine information system(CMIS) ,we can organize the Chinese medicine books well and users can access the books with flexibility,which indicates that CMSOF is an efficient framework to organize books mixed with images and text.
基金supported by the National Key Research and Development Program of China(No.2016YFA0201403)the National Natural Science Foundation of China(No.61522502)the Science Fund for Creative Research Group of China(No.61421064)
文摘To visualize the structure and organization of the brain is a fundamental requirement in the research of neuroscience. Here, combining with two-photon excitation fluorescence microscopy and transgenetic mouse GAD67,we demonstrate a custom-built second harmonic generation(SHG) microscope to discriminate brain layers and sub regions in the cerebellum and brain stem slices with cellular resolution. In particular, the cell densities of neurons in different brain layers are extracted due to the cell soma appearing as dark shadow on an SHG image.Further, the axon initial segments of the Purkinje cell are easily recognized without labeling, which would be useful for guiding micropipettes for electrophysiology.
文摘The entropy balance equation that describes the entropy budget of atmospheric systems is derived from the Gibbs relation.The distribution of the entropy flows of a west-Pacific typhoon and a Bengal-Bay cyclone is calculated and thus the dissipativity of the atmospheric systems is revealed.
文摘In time of peace, the navy adopts a leadership system that combines operational command with building and administration, and which mainly consists of the navy headquarters, fleets, test bases, educational institutions and an armaments academy. The navy has three fleets, namely, the Beihai Fleet, Donghai Fleet and Nanhai Fleet,
文摘To set up self-rule organizations forsocial life of the mass at city’s local level isnot uncommon in other countries.But toset up a resident committee of completestructure and with overall functions thatserves as an intermediate between the localpolitical organization and family units issomething peculiar to China.Then。
文摘A variety of phenyl alkyl sulfides were oxidized enantioselectively with NaIO_4 in chiral micellar systems formed from eight chiral surfactants,to give optical active sulfoxides.The enantiomer excesses ranged from 1.6 to 15.0%.To understand the mechanistic detail of this asymmetric oxi- dation in chiral micelle,the effects of structure both in substrates and surfactants on the optical yield of the oxidation were studied and discussed.Generally,increasing the alkyl chain length both in sur- factants and in substrates enhances the optical yield,also the surfactant with hydroxy group at its appropriate position gives better enantioselectivity,suggesting the enzymic characteristics of the chiral micelle.
文摘The nonlinear optical (NLO) and optical limiting (OL) properties of three new structures of organic NLO guest host Poly(N-vinylcarbozole)/disperse orange 3 (PVK/DO3), PVK/disperse orange 13 (PVK/DO13). and PVK/disperse orange 25 (PVK/DO25) as a solution at different concentrations and as a thin-film sample are studied using continuous wave z-scan system at 532 nm. The open-aperture z-scan data of the NLO materials in the solution and thin-film samples displayed two-photon and saturable absorptions, respectively. The PVK/DO13 exhibites the largest and best values of the nonlinearities, such as n2, β, X(3) compared with those of PVK/DO3 and PVK/DO25. This nonlinearity increases as the concentration increases. Tile results indicate that these NLO materials are good candidates for optical switching and OL devices.