With gene engineering EB virus membrane antigen as the diagnostic antigen, indirect immunofluo-rescence (IF) assay was used to detect IgA antibody against EB virus membrane antigen (MA-IgA) in sera from 202 nasopharyn...With gene engineering EB virus membrane antigen as the diagnostic antigen, indirect immunofluo-rescence (IF) assay was used to detect IgA antibody against EB virus membrane antigen (MA-IgA) in sera from 202 nasopharyngeal carcinoma (NPC) patients and 315 controls (normal and patients with other tumors). MA-IgA antibody was positive in 96.8% of the pretreatment NPC patients with a GMT of 1:36.3. MA-IgA detection by this method was more sensitive than EA-IgA detection by IE. In contrast, patients with tumors other than NPC were negative for MA-IgA antibody. 9.1% of VCA-IgA positive persons were MA-IgA positive with a GMT of less than 1:5. No MA-IgA positive was found in VCA-IgA negatives. The results indicated that this method was relatively specific. In the treatment group, the positive rate and GMT of MA-IgA antibody declined with increase in survival time and the decline was faster than VCA-IgA. When recurrence or distant metastasis developed, similar to VCA-IgA and EA-IgA antibodies, the positive rate and GMT of MA-IgA antibody increased to its pretreatment level. Therefore, MA-IgA detection might be valuable in the early diagnosis and monitor of NPC.展开更多
Web pre-fetching is one of the most popular strategies, which are proposed for reducing the perceived access delay and improving the service quality of web server. In this paper, we present a pre-fetching model based ...Web pre-fetching is one of the most popular strategies, which are proposed for reducing the perceived access delay and improving the service quality of web server. In this paper, we present a pre-fetching model based an the hidden Markov model, which mines the later information requirement concepts that the user's access path contains and makes semantic-based pre-fetching decisions. Experimental results show that our schcme has better predictive pre-fetching precision.展开更多
A mouse monoclonal antibody against EB virus EA-R named BAE- 5 was prepared applying hybridoma technique by use of n-butyric add and croton oil induced Raji cells as immunogen.And then, 34 NPCs and 29 mm-NPC neoplasms...A mouse monoclonal antibody against EB virus EA-R named BAE- 5 was prepared applying hybridoma technique by use of n-butyric add and croton oil induced Raji cells as immunogen.And then, 34 NPCs and 29 mm-NPC neoplasms were detected by the BAE-5 using APAAP immunohistochemical staining method.The results Indicated that all of the 34 NPCs and 9 of the 29 non-NPC neoplasms could reacted with the BAE-5 in spite of the columnar epithelium reserve cells showing positivity also. It is reasonable to come to the conclusion that most of the NPC cells can not only harbour EBV DNA but some of them be able to express EA-R. Some non-NPC neoplasms being demonstrated BAE-5 posttlvlty may be due to the presence of EBV EA- R antigenic epitope or polypeptides simulating the structure of EA-R. The authors think that these findings have theoretical significance for understanding the role of EBV- encoded poiypeptides, especially EA complex, In the development and progression of NPC as well as some non- NPC neoplasms harbouring EBV-DNA.展开更多
Geochemical reactions play a vital role in determining the efficiency of carbon capture,utilization,and storage combined with enhanced oil recovery(CCUS-EOR),particularly through their influence on reservoir propertie...Geochemical reactions play a vital role in determining the efficiency of carbon capture,utilization,and storage combined with enhanced oil recovery(CCUS-EOR),particularly through their influence on reservoir properties.To deepen the understanding of these mechanisms,this review investigates the interactions among injected CO_(2),formation fluids,and rock minerals and evaluates their implications for CCUS-EOR performance.The main results are summarized as follows.First,temperature,pressure,pH,and fluid composition are identified as key factors influencing mineral dissolution and precipitation,which in turn affect porosity,permeability,and CO_(2) storage.Second,carbonate minerals,such as calcite and dolomite,show high reactivity under lower temperature conditions,enhancing dissolution and permeability,while silicate minerals,including illite,kaolinite,quartz,and K-feldspar,are comparatively inert.Third,the formation of carbonic acid during CO_(2) injection promotes dissolution,whereas secondary precipitation,especially of clay minerals,can reduce pore connectivity and limit flow paths.Fourth,mineral transformation and salt precipitation can further modify reservoir characteristics,influencing both oil recovery and long-term CO_(2) trapping.Fifth,advanced experimental tools,such as Computed Tomography(CT)and Nuclear Magnetic Resonance(NMR)imaging,combined with geochemical modeling and reservoir simulation,are essential to predict petrophysical changes across scales.This review provides a theoretical foundation for integrating geochemical processes into CCUS-EOR design,offering technical support for field application and guiding sustainable CO_(2) management in oil reservoirs.展开更多
The Epstein-Barr virus membrane antigen was constructed and inserted into vaccinia virus, Tian-tan strain in order to study the effect of this virus on EB infection and tumorogenesis. The EBV-derived membrane antigen ...The Epstein-Barr virus membrane antigen was constructed and inserted into vaccinia virus, Tian-tan strain in order to study the effect of this virus on EB infection and tumorogenesis. The EBV-derived membrane antigen was expressed under the control of a 7.5 K promoter of vaccinia virus. The antibody against the membrane antigen of EB virus was produced on rabbits vaccinated with recombinant vaccinia virus.展开更多
In a high concentration substrate medium, a heterotrophic bacterium with high removal efficiency of ammonium, named W1, was isolated from activated sludge of coking wastewater treatment facility. The bacterium was Gra...In a high concentration substrate medium, a heterotrophic bacterium with high removal efficiency of ammonium, named W1, was isolated from activated sludge of coking wastewater treatment facility. The bacterium was Gram-negative, rod-shaped, and identified preliminarily as Alcaligenes sp. according to its morphological and physiological properties and its 16S rRNA gene sequence analysis. In the high concentration ammonium medium (400 mg·L 1 4 NH -N), the effects of C source, N source, C/N ratio and initial pH of medium on ammonium removal were investigated in order to determine the optimal condition for strain W1. The maximum ammonium removal was around 95% in 4 days in an improved medium. The production of N 2 gas was examined in a closed system that was full of pure oxygen at the beginning. N 2 gas was detected in the system after 4 days of cultivation, which further testified that strain W1 has heterotrophic nitrification and aerobic denitrification abilities simultaneously.展开更多
Chongqing is the largest municipality under the Chinese Central Government (MCG) in terms of administrative area and population and is now the most important economic and cultural center of the upper Yangtze River and...Chongqing is the largest municipality under the Chinese Central Government (MCG) in terms of administrative area and population and is now the most important economic and cultural center of the upper Yangtze River and Three Gorges area. The Three Gorges Dam project, one of the largest world infrastructure projects, causes a great deal of immigration to Chongqing and results in the rapid urbanization of the city, and it has brought in a great deal of environmental impact, which is a global concerned issue. This paper introduces the city profile of Chongqing municipality and its urbanization impact on energy and environment. The demand and the trend of energy consumption in built environment (building and transport) have been analysed. The living environment of Chongqing residents and the local energy efficient policy have been introduced. Finally the authors discuss the key issues of the sustainable urban development of Chongqing.展开更多
This paper proposed a two-tier location management mechanism （TTLM） by improving the current registration mechanism （CR） in IP Multimedia Subsystem （IMS）. The TTLM includes the visited network registration and t...This paper proposed a two-tier location management mechanism （TTLM） by improving the current registration mechanism （CR） in IP Multimedia Subsystem （IMS）. The TTLM includes the visited network registration and the home network registration, in which the visited network registration is responsible for re-registration in IMS. When subscriber roams, the location information of home network will be updated by the visited network based on the change of user equipment （UE）＇ s IP address. Thereibre the TTLM can reduce the times of IMS registration signaling. Using the proposed analytical model, the performance of the CR and the proposed TTLM were investigated. After the performance analysis of CR and TTLM by using proposed analytical model, the cost of CR in IMS could significantly be reduced theoretically and also was proven by simulation experiments.展开更多
文摘With gene engineering EB virus membrane antigen as the diagnostic antigen, indirect immunofluo-rescence (IF) assay was used to detect IgA antibody against EB virus membrane antigen (MA-IgA) in sera from 202 nasopharyngeal carcinoma (NPC) patients and 315 controls (normal and patients with other tumors). MA-IgA antibody was positive in 96.8% of the pretreatment NPC patients with a GMT of 1:36.3. MA-IgA detection by this method was more sensitive than EA-IgA detection by IE. In contrast, patients with tumors other than NPC were negative for MA-IgA antibody. 9.1% of VCA-IgA positive persons were MA-IgA positive with a GMT of less than 1:5. No MA-IgA positive was found in VCA-IgA negatives. The results indicated that this method was relatively specific. In the treatment group, the positive rate and GMT of MA-IgA antibody declined with increase in survival time and the decline was faster than VCA-IgA. When recurrence or distant metastasis developed, similar to VCA-IgA and EA-IgA antibodies, the positive rate and GMT of MA-IgA antibody increased to its pretreatment level. Therefore, MA-IgA detection might be valuable in the early diagnosis and monitor of NPC.
基金The research is supported by the National Natural Science Foundation of China(No. 60082003)
文摘Web pre-fetching is one of the most popular strategies, which are proposed for reducing the perceived access delay and improving the service quality of web server. In this paper, we present a pre-fetching model based an the hidden Markov model, which mines the later information requirement concepts that the user's access path contains and makes semantic-based pre-fetching decisions. Experimental results show that our schcme has better predictive pre-fetching precision.
文摘A mouse monoclonal antibody against EB virus EA-R named BAE- 5 was prepared applying hybridoma technique by use of n-butyric add and croton oil induced Raji cells as immunogen.And then, 34 NPCs and 29 mm-NPC neoplasms were detected by the BAE-5 using APAAP immunohistochemical staining method.The results Indicated that all of the 34 NPCs and 9 of the 29 non-NPC neoplasms could reacted with the BAE-5 in spite of the columnar epithelium reserve cells showing positivity also. It is reasonable to come to the conclusion that most of the NPC cells can not only harbour EBV DNA but some of them be able to express EA-R. Some non-NPC neoplasms being demonstrated BAE-5 posttlvlty may be due to the presence of EBV EA- R antigenic epitope or polypeptides simulating the structure of EA-R. The authors think that these findings have theoretical significance for understanding the role of EBV- encoded poiypeptides, especially EA complex, In the development and progression of NPC as well as some non- NPC neoplasms harbouring EBV-DNA.
基金support from the National Natural Science Foundation of China(No.52304048)supported by the Sichuan Science and Technology Program(No.2025ZNSFSC1355)the Open Fund(No.PLN202428)of the State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation at Southwest Petroleum University.
文摘Geochemical reactions play a vital role in determining the efficiency of carbon capture,utilization,and storage combined with enhanced oil recovery(CCUS-EOR),particularly through their influence on reservoir properties.To deepen the understanding of these mechanisms,this review investigates the interactions among injected CO_(2),formation fluids,and rock minerals and evaluates their implications for CCUS-EOR performance.The main results are summarized as follows.First,temperature,pressure,pH,and fluid composition are identified as key factors influencing mineral dissolution and precipitation,which in turn affect porosity,permeability,and CO_(2) storage.Second,carbonate minerals,such as calcite and dolomite,show high reactivity under lower temperature conditions,enhancing dissolution and permeability,while silicate minerals,including illite,kaolinite,quartz,and K-feldspar,are comparatively inert.Third,the formation of carbonic acid during CO_(2) injection promotes dissolution,whereas secondary precipitation,especially of clay minerals,can reduce pore connectivity and limit flow paths.Fourth,mineral transformation and salt precipitation can further modify reservoir characteristics,influencing both oil recovery and long-term CO_(2) trapping.Fifth,advanced experimental tools,such as Computed Tomography(CT)and Nuclear Magnetic Resonance(NMR)imaging,combined with geochemical modeling and reservoir simulation,are essential to predict petrophysical changes across scales.This review provides a theoretical foundation for integrating geochemical processes into CCUS-EOR design,offering technical support for field application and guiding sustainable CO_(2) management in oil reservoirs.
文摘The Epstein-Barr virus membrane antigen was constructed and inserted into vaccinia virus, Tian-tan strain in order to study the effect of this virus on EB infection and tumorogenesis. The EBV-derived membrane antigen was expressed under the control of a 7.5 K promoter of vaccinia virus. The antibody against the membrane antigen of EB virus was produced on rabbits vaccinated with recombinant vaccinia virus.
基金Supported by the National Natural Science Foundation of China (51078252)the International Cooperation Projects of Shanxi Province (2010081018)the Natural Science Foundation of Shanxi Province (2010011016-1)
文摘In a high concentration substrate medium, a heterotrophic bacterium with high removal efficiency of ammonium, named W1, was isolated from activated sludge of coking wastewater treatment facility. The bacterium was Gram-negative, rod-shaped, and identified preliminarily as Alcaligenes sp. according to its morphological and physiological properties and its 16S rRNA gene sequence analysis. In the high concentration ammonium medium (400 mg·L 1 4 NH -N), the effects of C source, N source, C/N ratio and initial pH of medium on ammonium removal were investigated in order to determine the optimal condition for strain W1. The maximum ammonium removal was around 95% in 4 days in an improved medium. The production of N 2 gas was examined in a closed system that was full of pure oxygen at the beginning. N 2 gas was detected in the system after 4 days of cultivation, which further testified that strain W1 has heterotrophic nitrification and aerobic denitrification abilities simultaneously.
基金UK FCO GOF(PGI GCC 000012) and Chongqing Small town Programme (CSTC-2004AA7008)
文摘Chongqing is the largest municipality under the Chinese Central Government (MCG) in terms of administrative area and population and is now the most important economic and cultural center of the upper Yangtze River and Three Gorges area. The Three Gorges Dam project, one of the largest world infrastructure projects, causes a great deal of immigration to Chongqing and results in the rapid urbanization of the city, and it has brought in a great deal of environmental impact, which is a global concerned issue. This paper introduces the city profile of Chongqing municipality and its urbanization impact on energy and environment. The demand and the trend of energy consumption in built environment (building and transport) have been analysed. The living environment of Chongqing residents and the local energy efficient policy have been introduced. Finally the authors discuss the key issues of the sustainable urban development of Chongqing.
基金Supported by National Science Fund for Distinguished Young Scholars (No. 60525110 )National Basic Research Program of China (No.2007CB307100, 2007CB307103)+1 种基金Program for New Century Excellent Talents in University (No. NCET-04-0111 )Development Fund Project for Electronic and Information Industry (Mobile Service and Application System Based on 3G)
文摘This paper proposed a two-tier location management mechanism （TTLM） by improving the current registration mechanism （CR） in IP Multimedia Subsystem （IMS）. The TTLM includes the visited network registration and the home network registration, in which the visited network registration is responsible for re-registration in IMS. When subscriber roams, the location information of home network will be updated by the visited network based on the change of user equipment （UE）＇ s IP address. Thereibre the TTLM can reduce the times of IMS registration signaling. Using the proposed analytical model, the performance of the CR and the proposed TTLM were investigated. After the performance analysis of CR and TTLM by using proposed analytical model, the cost of CR in IMS could significantly be reduced theoretically and also was proven by simulation experiments.
