ZTE Corporation announced on February 9 that it had received the Best Practice Award for being Frost & Sullivan's "2010 SDR Equipment Vendor of the Year." This award recognizes ZTE's outstanding contribution to t...ZTE Corporation announced on February 9 that it had received the Best Practice Award for being Frost & Sullivan's "2010 SDR Equipment Vendor of the Year." This award recognizes ZTE's outstanding contribution to the development of Software Defined Radio (SDR) technology and the wireless communications industry.展开更多
The "Application of Standards for Equipment-Manufacturing Industry Workshop" was held for two days in Shanghai from May 25th to May 26th, 2007. Dozens of delegates from famous enterprises and organizatio... The "Application of Standards for Equipment-Manufacturing Industry Workshop" was held for two days in Shanghai from May 25th to May 26th, 2007. Dozens of delegates from famous enterprises and organizations around the world participated, including those from Shell China Ltd., Leal China, Siemens Ltd. China Corporate, and Assurance of SAI Global and SGS . Nine experts, engaged in standardization, intellectual property, and related fields, gave speeches on "Standards and Best Practices," and many illustrative examples of the application of standards were provided.……展开更多
2017 China(Humen)Maternity and Baby Industry Forum was held during the 22nd China(Humen)International Fashion Fair.Kidswear,as a characteristic industry in Humen,has become the second only to women’s garment industri...2017 China(Humen)Maternity and Baby Industry Forum was held during the 22nd China(Humen)International Fashion Fair.Kidswear,as a characteristic industry in Humen,has become the second only to women’s garment industrial cluster in recent years.At present,China’s textile and apparel industry is in a period of full transition.The maternity and baby industries are also facing structural adjustments.Innovation has been a topic in various industries.展开更多
The behaviors of typical iron ores at high temperature were observed by confocal scanning laser microscopy. Four critical temperature points and liquid flow velocity at high temperatures of iron ores were obtained and...The behaviors of typical iron ores at high temperature were observed by confocal scanning laser microscopy. Four critical temperature points and liquid flow velocity at high temperatures of iron ores were obtained and the temperature points contain temperature at which sample starts to shrink, temperature at which the initial liquid phase forms, temperature at which a lot of liquid forms and temperature at which liquid consolidation ends. Under the same CaO to Fe203 ratio, the liquid phase fluidity of iron ore fines of Carajas (IOC) is good. However, under the same basicity, as the content of SiO2 in IOC is low, the liquid phase fluidity of IOC is much smaller than that of Yandi fine. After analysis of the initial formation and development of the liquid phase and the final consolidation process, the high-temperature process evaluation system (HTPES for short) of iron ore was established. The idea of "dense ore matching fusible ore" instead of "relatively fusible ore" was proposed based on the results of HTPES and applied in ore matching of a sinter plant from Shougang Jingtang. The use of IOC (13-18%) instead of standard sintering fines (SSF) improved liquid phase fluidity and ensured the sinter quality. Furthermore, the use of IOC fine (18-23%) with Hainan fine (0-2%) instead of SSF, a mixture of hematite and Marra Mamba ore and concentrates guaranteed the quality of sinter ore through improving fluidity, in the meantime reducing ore matching costs. With the establishment and application of HTPES, the sinter plant has achieved good economic benefits under the premise of ensuring the quality of sinter ore.展开更多
Hierarchically porous metal-organic frameworks(H-MOFs)with micro-,meso-and macropores have emerged as a popular class of crystalline porous materials that have attracted extensive interests,and they have been studied ...Hierarchically porous metal-organic frameworks(H-MOFs)with micro-,meso-and macropores have emerged as a popular class of crystalline porous materials that have attracted extensive interests,and they have been studied in diverse applications,especially in heterogeneous catalysis.The hierarchical structures enable sufficient diffusion and accessibility to the active sites of the molecules and permit the encapsulation of catalytic guest molecules to exploit more possibilities with enhanced catalytic performance.In this review,we have summarized the recent representative developments of H-MOFs in the field of heterogeneous catalysis,which includes oxidation reaction,hydrogenation reaction,and condensation reaction.Emphasis is placed on the multiple functions of hierarchical structures,and the catalytic activity,selectivity,stability,recyclability,etc.of the industrial utility of H-MOFs.Finally,the prospects and challenges of H-MOFs in heterogeneous catalysis and the remaining issues in this field are presented.展开更多
Although considerable achievements have been realized in recent years with respect to the syntheses of metal–organic frameworks(MOFs),majority of the developed MOFs are in the form of polydisperse microcrystalline po...Although considerable achievements have been realized in recent years with respect to the syntheses of metal–organic frameworks(MOFs),majority of the developed MOFs are in the form of polydisperse microcrystalline powders,which cause dustiness,abrasion,and clogging and decrease pressure when used in industrial applications.Monolithic MOFs overcome these drawbacks and exhibit various promising characteristics.In this review,we present the recent advances associated with monolithic MOFs based on metal centers and a brief outline of the most prominent examples.Furthermore,the challenges and prospects associated with monolithic MOFs in terms of large-scale production and engineering applicability are analyzed based on our knowledge to conclude this review.展开更多
文摘ZTE Corporation announced on February 9 that it had received the Best Practice Award for being Frost & Sullivan's "2010 SDR Equipment Vendor of the Year." This award recognizes ZTE's outstanding contribution to the development of Software Defined Radio (SDR) technology and the wireless communications industry.
文摘 The "Application of Standards for Equipment-Manufacturing Industry Workshop" was held for two days in Shanghai from May 25th to May 26th, 2007. Dozens of delegates from famous enterprises and organizations around the world participated, including those from Shell China Ltd., Leal China, Siemens Ltd. China Corporate, and Assurance of SAI Global and SGS . Nine experts, engaged in standardization, intellectual property, and related fields, gave speeches on "Standards and Best Practices," and many illustrative examples of the application of standards were provided.……
文摘2017 China(Humen)Maternity and Baby Industry Forum was held during the 22nd China(Humen)International Fashion Fair.Kidswear,as a characteristic industry in Humen,has become the second only to women’s garment industrial cluster in recent years.At present,China’s textile and apparel industry is in a period of full transition.The maternity and baby industries are also facing structural adjustments.Innovation has been a topic in various industries.
文摘The behaviors of typical iron ores at high temperature were observed by confocal scanning laser microscopy. Four critical temperature points and liquid flow velocity at high temperatures of iron ores were obtained and the temperature points contain temperature at which sample starts to shrink, temperature at which the initial liquid phase forms, temperature at which a lot of liquid forms and temperature at which liquid consolidation ends. Under the same CaO to Fe203 ratio, the liquid phase fluidity of iron ore fines of Carajas (IOC) is good. However, under the same basicity, as the content of SiO2 in IOC is low, the liquid phase fluidity of IOC is much smaller than that of Yandi fine. After analysis of the initial formation and development of the liquid phase and the final consolidation process, the high-temperature process evaluation system (HTPES for short) of iron ore was established. The idea of "dense ore matching fusible ore" instead of "relatively fusible ore" was proposed based on the results of HTPES and applied in ore matching of a sinter plant from Shougang Jingtang. The use of IOC (13-18%) instead of standard sintering fines (SSF) improved liquid phase fluidity and ensured the sinter quality. Furthermore, the use of IOC fine (18-23%) with Hainan fine (0-2%) instead of SSF, a mixture of hematite and Marra Mamba ore and concentrates guaranteed the quality of sinter ore through improving fluidity, in the meantime reducing ore matching costs. With the establishment and application of HTPES, the sinter plant has achieved good economic benefits under the premise of ensuring the quality of sinter ore.
基金supported by the National Natural Science Foundation of China(22008032,12105048,and 22078104)Guangdong Basic and Applied Basic Research Foundation(2019A1515110706 and 2020A1515110817)+5 种基金the Science and Technology Key Project of Guangdong Province,China(2020B010188002)the Special Innovation Projects of Universities in Guangdong Province(2018KTSCX240)the Innovation Team of Universities in Guangdong Province(2020KCXTD011)the Engineering Research Center of Universities in Guangdong Province(2019GCZX002)Guangdong Key Laboratory for Hydrogen Energy Technologies(2018B030322005)Guangdong Provincial Key Lab of Green Chemical Product Technology(GC202111)。
文摘Hierarchically porous metal-organic frameworks(H-MOFs)with micro-,meso-and macropores have emerged as a popular class of crystalline porous materials that have attracted extensive interests,and they have been studied in diverse applications,especially in heterogeneous catalysis.The hierarchical structures enable sufficient diffusion and accessibility to the active sites of the molecules and permit the encapsulation of catalytic guest molecules to exploit more possibilities with enhanced catalytic performance.In this review,we have summarized the recent representative developments of H-MOFs in the field of heterogeneous catalysis,which includes oxidation reaction,hydrogenation reaction,and condensation reaction.Emphasis is placed on the multiple functions of hierarchical structures,and the catalytic activity,selectivity,stability,recyclability,etc.of the industrial utility of H-MOFs.Finally,the prospects and challenges of H-MOFs in heterogeneous catalysis and the remaining issues in this field are presented.
基金financially supported by the National Natural Science Foundation of China (22008032 and 22078104)Guangdong Basic and Applied Basic Research Foundation (2019A1515110706)+6 种基金Guangdong Natural Science Foundation (2017A030313052 and 2019A1515011121)the Key Project of Department of Education of Guangdong Province (2016GCZX008)the National Key Research and Development Program (2019YFC1805804)the Innovation Team of Universities in Guangdong Province (2020KCXTD011)the Engineering Research Center of Universities in Guangdong Province (2019GCZX002)the Guangdong Key Laboratory for Hydrogen Energy Technologies (2018B030322005)the Fundamental Research Funds for the Central Universities
文摘Although considerable achievements have been realized in recent years with respect to the syntheses of metal–organic frameworks(MOFs),majority of the developed MOFs are in the form of polydisperse microcrystalline powders,which cause dustiness,abrasion,and clogging and decrease pressure when used in industrial applications.Monolithic MOFs overcome these drawbacks and exhibit various promising characteristics.In this review,we present the recent advances associated with monolithic MOFs based on metal centers and a brief outline of the most prominent examples.Furthermore,the challenges and prospects associated with monolithic MOFs in terms of large-scale production and engineering applicability are analyzed based on our knowledge to conclude this review.