Synthesis,characterization of Co_3O_4 and Ag-Co_3O_4 composites and evaluation of their photo-catalytic activities towards photo-degradation of aqueous solution of rhodamine B dye under irradiation of visible light ha...Synthesis,characterization of Co_3O_4 and Ag-Co_3O_4 composites and evaluation of their photo-catalytic activities towards photo-degradation of aqueous solution of rhodamine B dye under irradiation of visible light have been described in this paper.Co_3O_4 was prepared by solid phase mechano chemical process using Co(NO_3)_2·6H_2O and NH_4 HCO_3 as precursor materials.Ag was deposited on Co_3O_4 from AgNO_3 using Calotropis gigantea extract as reducing agent.XRD,SEM and FTIR were used for characterization of prepared composites.Photo-catalytic efficiencies of as-prepared Co_3O_4 and Ag-Co_3O_4 were evaluated for aqueous phase photo-degradation of rhodamine B.It was found that deposition of Ag on Co_3O_4 highly enhanced the photo-catalytic activity of Co_3O_4.Photo-catalytic degradation followed the Eley–Rideal mechanism.About 100% and 91% photo-degradation of 40 ml dye solution achieved at 313 K in 90 and 120 min over 0.05 g of Ag-Co_3O_4 as photo-catalyst using 100 and 200 mg·L^(-1) as initial concentration of dye respectively.展开更多
The comprehensive evaluation of Tahe medium gravity crude has demonstrated that this type of crude belongs to a intermediate base sour crude, featuring high vanadium content (103ppm), high carbon residue content, low ...The comprehensive evaluation of Tahe medium gravity crude has demonstrated that this type of crude belongs to a intermediate base sour crude, featuring high vanadium content (103ppm), high carbon residue content, low pour point, and low acid value. Based on the crude processing conditions at SINOPEC Luoyang Petrochemical Branch Company, a proposal on the appropriate process flow scheme for processing Tahe crude oil has been raised with the main ideas presented as follows. The IBP-175 fraction is not an ideal feedstock for catalytic reforming; the 75-250 fraction is a qualified feedstock for zeolite de-waxing; the 140-230 fraction can be used to manufacture the No. 3 jet fuel through appropriate distillation range adjustment and product refining; the 175-350 fraction can be directly used to manufacture No.-10 diesel through proper refining; the atmospheric resid boiling over 350 is not suited to be used as the RFCC feedstock; the 350-520 vacuum distillate oil can be used as the FCC feedstock; and the vacuum residuum boiling over 520 is a good feedstock for manufacture of asphalt.展开更多
A novel constant interfacial area cell(NCIAC),by spatially separating the agitation from liquid flow circulation of organic and aqueous two phases,was suggested to obtain detailed kinetic data for Er(Ⅲ) extraction fr...A novel constant interfacial area cell(NCIAC),by spatially separating the agitation from liquid flow circulation of organic and aqueous two phases,was suggested to obtain detailed kinetic data for Er(Ⅲ) extraction from chloride medium by 2-ethyl-hexyl-phosphonic acid mono-(2-ethylhexyl) ester(EHEHPA).Different from the traditional Lewis cell and the constant interfacial area cell with laminar flow,the concentrations of Er(Ⅲ) in organic and aqueous two phases were uniform,and the stability of the interfacial area between the two phases could be controlled effectively.Therefore,the special requirements for the design of agitators in the traditional Lewis cell and the constant interfacial area cell for minimizing the influence of diffusion resistance could be avoided.Experimental results indicated that the extraction kinetics was mainly affected by the aqueous flow rate,interfacial area between organic and aqueous two phases,and the aqueous p H values.An extraction kinetic equation was suggested based on the experimental data.展开更多
The purpose of this study is to design a tool, adapted to students' individual contexts and to enable students to reflect on their understanding of media characteristics. AHP (analytic hierarchy process) is a struc...The purpose of this study is to design a tool, adapted to students' individual contexts and to enable students to reflect on their understanding of media characteristics. AHP (analytic hierarchy process) is a structured technique for organizing and analyzing complex decisions. Using AHP, students have to define appropriate criteria and priorities for using media. It is expected that students" understanding of the characteristics of different types of media will emerge through reflection. Seventy two university students took part in this research. They were asked to prioritize their ways.of obtaining information about current affairs using sets of media such as TV, books, newspapers and web pages, Twitter and Facebook. AHP enables us to visualize a "real" understanding of media characteristics and students can reflect on that basis. As far as "information sources and media" is concerned, a few students indicated that it was the information source itself that was important rather than the type of media. Our tool fulfils the role of encouraging this type of reflection.展开更多
Social media is an information technology that allows users to communicate and share information. With steadily rising number of users across the globe, individuals participate in various activities, like connecting w...Social media is an information technology that allows users to communicate and share information. With steadily rising number of users across the globe, individuals participate in various activities, like connecting with friends and community members, sharing information, posting political messages, disaster recovery activities, reading daily news, learning, and entertainment, each driven by different sets of motivations. Culture has an influence on the kind of motivation―pro-social and personal needs oriented―that drives social media usage by individuals. Using Hofstede’s (1984b) cultural dimensions, the paper suggests that each of the dimensions will have influences on the social media behaviors differently. Such a cultural perspective helps future social media users to plan the kind of activity and information sharing based on the kind of motivation driving the target audience and the platform providers to design and market accordingly.展开更多
The study was concerned with the problem of the Russian youth, with a special emphasis on the history of the theoretical and empirical researches devoted to the youth issues. The research delineates the term thesaurus...The study was concerned with the problem of the Russian youth, with a special emphasis on the history of the theoretical and empirical researches devoted to the youth issues. The research delineates the term thesaurus and its connection with the formation of youth's outlook. The central focus of the research is social and cultural value orientations of the young Russian. The study presents a detailed analysis of impact that mass media plays in socialization of youth, its generations, its influence on public opinion formation and priority directions of national policy of regulation of mutual relations between youth and mass media. It attempts to examine the presence of mass media in youth's everyday life. The research provides a detailed analysis of contemporary state of the youth's trust to the mass media and degree of dependence on it. The study also presents a detailed analysis of the traces of mass media's influence on young Russians. The completed research is fundamental for the sociological and the philosophical generalisations that underline comparative research on the youth problems in Russia, its social and cultural value orientations and the influence on public opinion formation and priority directions of national policy of regulation of mutual relations between youth and mass media.展开更多
This article focuses on the rise of Islamic values in media with concern to the film industry in Indonesia. In this nation, 88.22% of 254 million of the population are Muslims. However, this substantial quantity is bu...This article focuses on the rise of Islamic values in media with concern to the film industry in Indonesia. In this nation, 88.22% of 254 million of the population are Muslims. However, this substantial quantity is burden some if Muslims have a lack of appreciation to history and are intellectually weak. In addition, cultural degradation due to the rapid changes in information & communication technology diminishes moral and ethics of society. The growth of film industry in the Soeharto era which curb freedom of expression and media resulted in films which were more oriented to comedy, horror, and vulgar. The aims of this study specifically are: (1) to identify the film industry (macro) in the context of challenge of Indonesian Muslim in social and culture; (2) to analyze the political interests of film production company owner (meso) in his films; (3) to conduct textual analysis (micro) of two films which include Islamic values in the dialogues. Two films, Nagabonar Jadi 2 (Nagabonar Become 2) and Alangkah Lucunya Negeri lni (How Funny This Country ls), were selected as samples for their contents that fearlessly criticize corrupt governance and promote integrity and good deeds. The three dimensions of critical discourse which was proposed by Norman Fairlough (1992) was used to evaluate the local film industry from the perspective of macro, meso, and micro. The macro-analysis found that Indonesian films act should be modified to keep up with modernized and recent trends in media and film industry. The meso analysis showed that competition between film companies are very though, however, film quality determines the popularity of the company in public. According to the company owner's agenda, Deddy Mizwar determines the quality of films produced, instead of quantity, as apriority. Thus, in post-reform era, the freedom of expression which enforced by the Act No. 9 of 1998, the company start producing Islamic films. Deddy Mizwar concerns for society are not only through the media but also political. He recently elected as the deputy governor of West Java province with the full support of an Islamic Party (Partai Keadilan Sejahtera). The textual studies have found similarities of the Islamic values in the content of the two films which are tawaqal (trust and reliance on God) and Taqwa, the pursuit of knowledge, respecting for the elderly, and belief in the Hereafter.展开更多
Community Radio is a medium which the different threads mingle together brings different social threads together and weaves a vibrant fabric where all without compromising their original composition. Freedom of speech...Community Radio is a medium which the different threads mingle together brings different social threads together and weaves a vibrant fabric where all without compromising their original composition. Freedom of speech and expression is the cornerstone of this medium. In India, Community Radio started its journey in 2004, with the purpose of bringing different sections of the society together so that they can share their experiences, fears, and ambition. Social intervention has been one of the primary agenda Community Radio. Through various awareness-raising programs, it aims to bring positive social change in the lives of people residing around its transmission zone. It also aims to include different sub-sections of its community who are often excluded from the mainstream media.展开更多
A filed experiment was conducted continuously for three days,and the velocity variation was measured using coda wave interferometry.The measurement error is estimated to be around 10-4,which coincides well with the th...A filed experiment was conducted continuously for three days,and the velocity variation was measured using coda wave interferometry.The measurement error is estimated to be around 10-4,which coincides well with the theoretical error.The velocity variation during this period is up to 10-3.The relationship between velocity variation and changes in air temperature,barometric pressure and solid earth tide was analyzed with linear least square fitting.The velocity has no dependence on air temperature,but displayed change of the order of 10-6~10-7 when the barometer or earth tide changed one Pa.展开更多
Network media has become more and more involved in our daily life. It has become a part of modern life that cannot be stopped or rejected. Then, how to correctly face the changes in the Internet era is placed in fron...Network media has become more and more involved in our daily life. It has become a part of modern life that cannot be stopped or rejected. Then, how to correctly face the changes in the Internet era is placed in front of everyone. Students need to “learn how to use the media to get their all-round development, effectively prevent the foreign information pollution, and actively guide students to a truly rational attitude for WeChat, blog and micro-blog”. It is a kind of media literacy being confronted with the network’s ability to consciously resist the harmful information, but also to benefit their own development and firmly grasp the information, so as to make full use of the convenience of network self promotion. “Screen reading” network plays an important role in college students’ life, and the fragmentation, the text features of the writing ability of college students also have a strong impact; this paper focuses on the influence of college students in the network reading and writing patterns on their writing ability and influence. From the perspective of media literacy education for college students, writing ability and reading ability provide a feasible way.展开更多
Localizing network legal supervision based on national conditions, legal traditions and the needs of economic and political development is the basis to manage and administrate the network by law. Adjusted to media con...Localizing network legal supervision based on national conditions, legal traditions and the needs of economic and political development is the basis to manage and administrate the network by law. Adjusted to media convergence and the needs of network cultural industry development, China has made the lawmaking of media transform from practical service oriented management to functional oriented management of media. This strategy aims to prevent network medium risk effectively according to network communication regularity.展开更多
Literary reading reached its peak in China in the 1980s. From the 1990s on, however, it underwent a slow decline which has gained speed in the new century. The new media have played an important role in the process of...Literary reading reached its peak in China in the 1980s. From the 1990s on, however, it underwent a slow decline which has gained speed in the new century. The new media have played an important role in the process of its decline. Their influence is mainly seen in the reshaping of the receiver's perceptual structure because of the change from text to image and in the lack of stimulus to reflection and thought because of the change from page to screen. At the same time, the new media have broken down the "solitary" state of reading and lessened the depth of the reception model. From the perspective of media culture, the decline of literary reading is a result of the serious damage inflicted upon print culture by visual culture. The new generation is already living in an environment of visual culture; they will inevitably drift away from literary reading. This will have an impact on both production and research in literature. The private memory, perceptual structure and even bodily habits of those who preserve literary reading and resist the new media are precisely those established by print culture. Therefore, behind the clash between preserving and forsaking literary reading lies a clash between different media cultures.展开更多
基金The World Academy of Sciences(TWAS)(13-301 RG/MSN/AS_C) is acknowledged for financial support under COMSTECH-TWAS Grants Program
文摘Synthesis,characterization of Co_3O_4 and Ag-Co_3O_4 composites and evaluation of their photo-catalytic activities towards photo-degradation of aqueous solution of rhodamine B dye under irradiation of visible light have been described in this paper.Co_3O_4 was prepared by solid phase mechano chemical process using Co(NO_3)_2·6H_2O and NH_4 HCO_3 as precursor materials.Ag was deposited on Co_3O_4 from AgNO_3 using Calotropis gigantea extract as reducing agent.XRD,SEM and FTIR were used for characterization of prepared composites.Photo-catalytic efficiencies of as-prepared Co_3O_4 and Ag-Co_3O_4 were evaluated for aqueous phase photo-degradation of rhodamine B.It was found that deposition of Ag on Co_3O_4 highly enhanced the photo-catalytic activity of Co_3O_4.Photo-catalytic degradation followed the Eley–Rideal mechanism.About 100% and 91% photo-degradation of 40 ml dye solution achieved at 313 K in 90 and 120 min over 0.05 g of Ag-Co_3O_4 as photo-catalyst using 100 and 200 mg·L^(-1) as initial concentration of dye respectively.
文摘The comprehensive evaluation of Tahe medium gravity crude has demonstrated that this type of crude belongs to a intermediate base sour crude, featuring high vanadium content (103ppm), high carbon residue content, low pour point, and low acid value. Based on the crude processing conditions at SINOPEC Luoyang Petrochemical Branch Company, a proposal on the appropriate process flow scheme for processing Tahe crude oil has been raised with the main ideas presented as follows. The IBP-175 fraction is not an ideal feedstock for catalytic reforming; the 75-250 fraction is a qualified feedstock for zeolite de-waxing; the 140-230 fraction can be used to manufacture the No. 3 jet fuel through appropriate distillation range adjustment and product refining; the 175-350 fraction can be directly used to manufacture No.-10 diesel through proper refining; the atmospheric resid boiling over 350 is not suited to be used as the RFCC feedstock; the 350-520 vacuum distillate oil can be used as the FCC feedstock; and the vacuum residuum boiling over 520 is a good feedstock for manufacture of asphalt.
基金Supported by the National Natural Science Foundation of China(51574213,51074150)the Key Project of Chinese National Programs for Fundamental Research and Development(2012CBA01203,2013CB632602)
文摘A novel constant interfacial area cell(NCIAC),by spatially separating the agitation from liquid flow circulation of organic and aqueous two phases,was suggested to obtain detailed kinetic data for Er(Ⅲ) extraction from chloride medium by 2-ethyl-hexyl-phosphonic acid mono-(2-ethylhexyl) ester(EHEHPA).Different from the traditional Lewis cell and the constant interfacial area cell with laminar flow,the concentrations of Er(Ⅲ) in organic and aqueous two phases were uniform,and the stability of the interfacial area between the two phases could be controlled effectively.Therefore,the special requirements for the design of agitators in the traditional Lewis cell and the constant interfacial area cell for minimizing the influence of diffusion resistance could be avoided.Experimental results indicated that the extraction kinetics was mainly affected by the aqueous flow rate,interfacial area between organic and aqueous two phases,and the aqueous p H values.An extraction kinetic equation was suggested based on the experimental data.
文摘The purpose of this study is to design a tool, adapted to students' individual contexts and to enable students to reflect on their understanding of media characteristics. AHP (analytic hierarchy process) is a structured technique for organizing and analyzing complex decisions. Using AHP, students have to define appropriate criteria and priorities for using media. It is expected that students" understanding of the characteristics of different types of media will emerge through reflection. Seventy two university students took part in this research. They were asked to prioritize their ways.of obtaining information about current affairs using sets of media such as TV, books, newspapers and web pages, Twitter and Facebook. AHP enables us to visualize a "real" understanding of media characteristics and students can reflect on that basis. As far as "information sources and media" is concerned, a few students indicated that it was the information source itself that was important rather than the type of media. Our tool fulfils the role of encouraging this type of reflection.
文摘Social media is an information technology that allows users to communicate and share information. With steadily rising number of users across the globe, individuals participate in various activities, like connecting with friends and community members, sharing information, posting political messages, disaster recovery activities, reading daily news, learning, and entertainment, each driven by different sets of motivations. Culture has an influence on the kind of motivation―pro-social and personal needs oriented―that drives social media usage by individuals. Using Hofstede’s (1984b) cultural dimensions, the paper suggests that each of the dimensions will have influences on the social media behaviors differently. Such a cultural perspective helps future social media users to plan the kind of activity and information sharing based on the kind of motivation driving the target audience and the platform providers to design and market accordingly.
文摘The study was concerned with the problem of the Russian youth, with a special emphasis on the history of the theoretical and empirical researches devoted to the youth issues. The research delineates the term thesaurus and its connection with the formation of youth's outlook. The central focus of the research is social and cultural value orientations of the young Russian. The study presents a detailed analysis of impact that mass media plays in socialization of youth, its generations, its influence on public opinion formation and priority directions of national policy of regulation of mutual relations between youth and mass media. It attempts to examine the presence of mass media in youth's everyday life. The research provides a detailed analysis of contemporary state of the youth's trust to the mass media and degree of dependence on it. The study also presents a detailed analysis of the traces of mass media's influence on young Russians. The completed research is fundamental for the sociological and the philosophical generalisations that underline comparative research on the youth problems in Russia, its social and cultural value orientations and the influence on public opinion formation and priority directions of national policy of regulation of mutual relations between youth and mass media.
文摘This article focuses on the rise of Islamic values in media with concern to the film industry in Indonesia. In this nation, 88.22% of 254 million of the population are Muslims. However, this substantial quantity is burden some if Muslims have a lack of appreciation to history and are intellectually weak. In addition, cultural degradation due to the rapid changes in information & communication technology diminishes moral and ethics of society. The growth of film industry in the Soeharto era which curb freedom of expression and media resulted in films which were more oriented to comedy, horror, and vulgar. The aims of this study specifically are: (1) to identify the film industry (macro) in the context of challenge of Indonesian Muslim in social and culture; (2) to analyze the political interests of film production company owner (meso) in his films; (3) to conduct textual analysis (micro) of two films which include Islamic values in the dialogues. Two films, Nagabonar Jadi 2 (Nagabonar Become 2) and Alangkah Lucunya Negeri lni (How Funny This Country ls), were selected as samples for their contents that fearlessly criticize corrupt governance and promote integrity and good deeds. The three dimensions of critical discourse which was proposed by Norman Fairlough (1992) was used to evaluate the local film industry from the perspective of macro, meso, and micro. The macro-analysis found that Indonesian films act should be modified to keep up with modernized and recent trends in media and film industry. The meso analysis showed that competition between film companies are very though, however, film quality determines the popularity of the company in public. According to the company owner's agenda, Deddy Mizwar determines the quality of films produced, instead of quantity, as apriority. Thus, in post-reform era, the freedom of expression which enforced by the Act No. 9 of 1998, the company start producing Islamic films. Deddy Mizwar concerns for society are not only through the media but also political. He recently elected as the deputy governor of West Java province with the full support of an Islamic Party (Partai Keadilan Sejahtera). The textual studies have found similarities of the Islamic values in the content of the two films which are tawaqal (trust and reliance on God) and Taqwa, the pursuit of knowledge, respecting for the elderly, and belief in the Hereafter.
文摘Community Radio is a medium which the different threads mingle together brings different social threads together and weaves a vibrant fabric where all without compromising their original composition. Freedom of speech and expression is the cornerstone of this medium. In India, Community Radio started its journey in 2004, with the purpose of bringing different sections of the society together so that they can share their experiences, fears, and ambition. Social intervention has been one of the primary agenda Community Radio. Through various awareness-raising programs, it aims to bring positive social change in the lives of people residing around its transmission zone. It also aims to include different sub-sections of its community who are often excluded from the mainstream media.
基金sponsored by the Special R & D Project of China Earthquake Administration(200808002)the Special Project of Basic Scientific Research of the Institute of Geophysics,CEA(DQJB08B13)
文摘A filed experiment was conducted continuously for three days,and the velocity variation was measured using coda wave interferometry.The measurement error is estimated to be around 10-4,which coincides well with the theoretical error.The velocity variation during this period is up to 10-3.The relationship between velocity variation and changes in air temperature,barometric pressure and solid earth tide was analyzed with linear least square fitting.The velocity has no dependence on air temperature,but displayed change of the order of 10-6~10-7 when the barometer or earth tide changed one Pa.
文摘Network media has become more and more involved in our daily life. It has become a part of modern life that cannot be stopped or rejected. Then, how to correctly face the changes in the Internet era is placed in front of everyone. Students need to “learn how to use the media to get their all-round development, effectively prevent the foreign information pollution, and actively guide students to a truly rational attitude for WeChat, blog and micro-blog”. It is a kind of media literacy being confronted with the network’s ability to consciously resist the harmful information, but also to benefit their own development and firmly grasp the information, so as to make full use of the convenience of network self promotion. “Screen reading” network plays an important role in college students’ life, and the fragmentation, the text features of the writing ability of college students also have a strong impact; this paper focuses on the influence of college students in the network reading and writing patterns on their writing ability and influence. From the perspective of media literacy education for college students, writing ability and reading ability provide a feasible way.
文摘Localizing network legal supervision based on national conditions, legal traditions and the needs of economic and political development is the basis to manage and administrate the network by law. Adjusted to media convergence and the needs of network cultural industry development, China has made the lawmaking of media transform from practical service oriented management to functional oriented management of media. This strategy aims to prevent network medium risk effectively according to network communication regularity.
文摘Literary reading reached its peak in China in the 1980s. From the 1990s on, however, it underwent a slow decline which has gained speed in the new century. The new media have played an important role in the process of its decline. Their influence is mainly seen in the reshaping of the receiver's perceptual structure because of the change from text to image and in the lack of stimulus to reflection and thought because of the change from page to screen. At the same time, the new media have broken down the "solitary" state of reading and lessened the depth of the reception model. From the perspective of media culture, the decline of literary reading is a result of the serious damage inflicted upon print culture by visual culture. The new generation is already living in an environment of visual culture; they will inevitably drift away from literary reading. This will have an impact on both production and research in literature. The private memory, perceptual structure and even bodily habits of those who preserve literary reading and resist the new media are precisely those established by print culture. Therefore, behind the clash between preserving and forsaking literary reading lies a clash between different media cultures.