Preliminary experiments are carried out to characterize the droplets generated in two aerosol-generating health care procedures,i.e.taking nasopharyngeal aspirates（NPA）and nebulizer therapy.Glass slides and water-se...Preliminary experiments are carried out to characterize the droplets generated in two aerosol-generating health care procedures,i.e.taking nasopharyngeal aspirates（NPA）and nebulizer therapy.Glass slides and water-sensitive paper（WSP）are used to collect large droplets when taking NPA.Droplet stain-marks on glass slides are counted under a microscope,and then a size analysis is performed.During nebulizer therapy dust monitors are used to detect small droplets and droplet nuclei at different positions around the nebulizer and in the room.From the preliminary results it is found that taking NPA can stimulate coughing and generate large droplets.Nebulizers can generate more than tens of millions fine droplets ranging from 0.3 to 20 μm per minute,a large volume of which can escape from the holes on the nebulizer＇s facemask and disperse in the whole room.Droplets coagulate on the inner surface of the mask and the volunteer＇s face,suggesting a great possibility of drug solution contamination by patients＇ secretion during nebulizer therapy.展开更多
This article uses the phase space path integral method to find the propagator for a particle with a force quadratic in velocity. Two specific canonical transformations has been used for this purpose.
In order to investigate the effect of variation in the distribution of gas on explosion propagation characteristics in coal mines, experiments were carried out in two different channels with variation in gas concentra...In order to investigate the effect of variation in the distribution of gas on explosion propagation characteristics in coal mines, experiments were carried out in two different channels with variation in gas concentration and geometry. Flame and pressure transducers were used to track the explosion front velocity. The flame speed (Sf) showed a slight downward trend while the methane concentration varied from 10% to 3% in the experimental channel. The peak overpressure (Pmax) dropped dramatically when compared with normal conditions. As well, the values of Pmax and Sf decreased when the methane concentration dropped from 8% to 6%. The flame speed in the channel, connected to a cylinder with a length varying from 0.5 to 2 m, was greater than that in the normal channel. The peak overpressure was also higher than that under normal conditions because of a higher flame speed and stronger pressure piling up. The values of Pmax and Sf increased with an increase in cylinder length. The research results indicate that damage caused by explosions can be reduced by decreasing the gas concentration, which should be immediately detected in roadways with large cross-sections because of the possibility of greater destruction caused by more serious explosions.展开更多
To simulate the dynamic responses of the multibody system with a floating base when the upper parts spread with a certain sequence and relative speed, the homogeneous matrix method is employed to model and simulate a ...To simulate the dynamic responses of the multibody system with a floating base when the upper parts spread with a certain sequence and relative speed, the homogeneous matrix method is employed to model and simulate a four-body system with a floating base and the motions are analyzed when the upper parts are spread sequentially or synchronously. The rolling, swaying and heaving temporal variations are obtained when the multibody system is under the conditions of the static water along with the wave loads and the mean wind loads or the single pulse wind loads, respectively. The moment variations of each joint under the single pulse wind load are also gained. The numerical results showed that the swaying of the floating base is almost not influenced by the spreading time or form when the upper parts spread sequentially or synchronously, while the rolling and the heaving mainly depend on the spreading time and forms. The swaying and heaving motions are influenced significantly by the mean wind loads. The single pulse wind load also has influences on the dynamic responses. The torque of joint 3 and joint 4 in the single pulse wind environment may be twice that in the windless environment when the system spreads with 60 s duration.展开更多
The aim of this paper is firstly to determine if the Korean television drama Winter Sonata and its spinoffs are contributing to contemporary cross-cultural diffusion in Japan. Secondly, if cross-cultural diffusion is ...The aim of this paper is firstly to determine if the Korean television drama Winter Sonata and its spinoffs are contributing to contemporary cross-cultural diffusion in Japan. Secondly, if cross-cultural diffusion is occurring, is it contributing to a loss of local identity？ Winter Sonata is a small but significant part of the Korean Wave and in the vanguard of Korean television drama content viewed in Japan. There have been macro political changes in East Asia, largely driven by Korea, resulting in an easing of restrictions on cross-border media trade. These in turn have progressively created a new dynamic in content and volume. The methodology used for the study is triangulation including document analysis, audience analysis, and commercial outcomes. The convergent validation derived from the three parameters advances the proposition that Winter Sonata has contributed to cultural diffusion from a Japanese perspective but not to a loss of local identity. Arguably, the process is an enriching one in East Asia reinforced by multi-lateral media trade.展开更多
Since Education is the transmission of Culture, the study examined the transmission of the Nigerian culture through Education at the primary school level, since 1960, the year of Nigerian＇s independence, till date. H...Since Education is the transmission of Culture, the study examined the transmission of the Nigerian culture through Education at the primary school level, since 1960, the year of Nigerian＇s independence, till date. Historical research method was adopted for the study and data were analyzed using primary sources like; oral interviews and archival materials, while publications like; textbooks, articles in journals, file document, speeches and workshop papers were used as secondary sources. The focuses of the paper are to define culture, analyze the relationship between culture and education, examine the primary school curriculum in Nigeria, trace the transmission processes of the Nigerian culture through primary education, consider few challenges of primary education in the promotion of Nigerian culture and offer suggestions to improve the role of primary education in Nigeria in this regards. The findings revealed that, the western education introduced by the British colonial masters, was patterned after European culture for promotion of their educational philosophies and missionary activities. Subjects like： Latin, English language, Religious studies, simple Arithmetic, artisans and others were included in the earlier curriculum for the benefit of the European economic, social, religious and political ambitions. As Nigerians agitated for independence, unity and fi＇eedom, the educational policies began to change to meeting the local needs of Nigerians at all levels of education. The Phelps-Stokes Commission report of 1922 exposed the inadequacies of educational curriculum used in the Nigerian schools, as not meeting the needs of the people. The 1969 Curriculum conference however, brought a complete revolution to the primary school education in the areas of relevance. For instance, subject like： Yoruba, Hausa and Igbo which were major Nigerian languages, Civic Education and Fine Arts were introduced into the primary school curriculum so as to create in-depth awareness for cultural transmission. The roles of such educational bodies like： NERDC and CESAC were fully discussed in the paper. Policies like： Universal Primary Education （UPE） and Universal Basic Education （UBE） introduced in 1976 and 2004 respectively, were efforts of the government at transforming primary education through culture. Challenges like： inadequate funding, personnel problem and implementation problem were indentified. It is therefore recommended that adequate funding be allocated and made available as well as employment of sufficient qualified personnel. There should be strong political will to make policies effective and people＇s interest should be carried along in policies formulations and implementations.展开更多
As part of business translation, web page translation is an effective way of global communication. Accurate and adequate translation of web pages can enhance the enterprises＇ competitiveness. This paper focuses on th...As part of business translation, web page translation is an effective way of global communication. Accurate and adequate translation of web pages can enhance the enterprises＇ competitiveness. This paper focuses on the features of Chinese and Western web pages of garment enterprises and the translation strategy with the guidance of mass communication theory. Results illustrate that Chinese texts favor symmetrical phrases rich in cultural connotation, whereas English texts prefer plain language with fewer culture-loaded expressions and the latter focuses more on the feeling of audiences. As a result, audience-oriented translation strategy is strongly recommended so as to maximize the communication effect of the enterprise web pages展开更多
基金The Project of Research Grants Council of the HongKong Special Administrative Region(No.HKU7150/06)
文摘Preliminary experiments are carried out to characterize the droplets generated in two aerosol-generating health care procedures,i.e.taking nasopharyngeal aspirates（NPA）and nebulizer therapy.Glass slides and water-sensitive paper（WSP）are used to collect large droplets when taking NPA.Droplet stain-marks on glass slides are counted under a microscope,and then a size analysis is performed.During nebulizer therapy dust monitors are used to detect small droplets and droplet nuclei at different positions around the nebulizer and in the room.From the preliminary results it is found that taking NPA can stimulate coughing and generate large droplets.Nebulizers can generate more than tens of millions fine droplets ranging from 0.3 to 20 μm per minute,a large volume of which can escape from the holes on the nebulizer＇s facemask and disperse in the whole room.Droplets coagulate on the inner surface of the mask and the volunteer＇s face,suggesting a great possibility of drug solution contamination by patients＇ secretion during nebulizer therapy.
文摘This article uses the phase space path integral method to find the propagator for a particle with a force quadratic in velocity. Two specific canonical transformations has been used for this purpose.
基金provided by the National Natural Science Foundation of China (No.50574093)the Key Program of the National Nature Science of China (No.50534090)+2 种基金the National Basic Research and Development Program of China (No.2005CB221506)the National Science Foundation for Young Scholars of China (No.50804048)the National Key Technology Research and Development Program (Nos.2006BAK03B04 and 2007 BAK29B01)
文摘In order to investigate the effect of variation in the distribution of gas on explosion propagation characteristics in coal mines, experiments were carried out in two different channels with variation in gas concentration and geometry. Flame and pressure transducers were used to track the explosion front velocity. The flame speed (Sf) showed a slight downward trend while the methane concentration varied from 10% to 3% in the experimental channel. The peak overpressure (Pmax) dropped dramatically when compared with normal conditions. As well, the values of Pmax and Sf decreased when the methane concentration dropped from 8% to 6%. The flame speed in the channel, connected to a cylinder with a length varying from 0.5 to 2 m, was greater than that in the normal channel. The peak overpressure was also higher than that under normal conditions because of a higher flame speed and stronger pressure piling up. The values of Pmax and Sf increased with an increase in cylinder length. The research results indicate that damage caused by explosions can be reduced by decreasing the gas concentration, which should be immediately detected in roadways with large cross-sections because of the possibility of greater destruction caused by more serious explosions.
基金the National Natural Science Foundation of China，Major State Basic Research Development Program of China （973 Program）
文摘To simulate the dynamic responses of the multibody system with a floating base when the upper parts spread with a certain sequence and relative speed, the homogeneous matrix method is employed to model and simulate a four-body system with a floating base and the motions are analyzed when the upper parts are spread sequentially or synchronously. The rolling, swaying and heaving temporal variations are obtained when the multibody system is under the conditions of the static water along with the wave loads and the mean wind loads or the single pulse wind loads, respectively. The moment variations of each joint under the single pulse wind load are also gained. The numerical results showed that the swaying of the floating base is almost not influenced by the spreading time or form when the upper parts spread sequentially or synchronously, while the rolling and the heaving mainly depend on the spreading time and forms. The swaying and heaving motions are influenced significantly by the mean wind loads. The single pulse wind load also has influences on the dynamic responses. The torque of joint 3 and joint 4 in the single pulse wind environment may be twice that in the windless environment when the system spreads with 60 s duration.
文摘The aim of this paper is firstly to determine if the Korean television drama Winter Sonata and its spinoffs are contributing to contemporary cross-cultural diffusion in Japan. Secondly, if cross-cultural diffusion is occurring, is it contributing to a loss of local identity？ Winter Sonata is a small but significant part of the Korean Wave and in the vanguard of Korean television drama content viewed in Japan. There have been macro political changes in East Asia, largely driven by Korea, resulting in an easing of restrictions on cross-border media trade. These in turn have progressively created a new dynamic in content and volume. The methodology used for the study is triangulation including document analysis, audience analysis, and commercial outcomes. The convergent validation derived from the three parameters advances the proposition that Winter Sonata has contributed to cultural diffusion from a Japanese perspective but not to a loss of local identity. Arguably, the process is an enriching one in East Asia reinforced by multi-lateral media trade.
文摘Since Education is the transmission of Culture, the study examined the transmission of the Nigerian culture through Education at the primary school level, since 1960, the year of Nigerian＇s independence, till date. Historical research method was adopted for the study and data were analyzed using primary sources like; oral interviews and archival materials, while publications like; textbooks, articles in journals, file document, speeches and workshop papers were used as secondary sources. The focuses of the paper are to define culture, analyze the relationship between culture and education, examine the primary school curriculum in Nigeria, trace the transmission processes of the Nigerian culture through primary education, consider few challenges of primary education in the promotion of Nigerian culture and offer suggestions to improve the role of primary education in Nigeria in this regards. The findings revealed that, the western education introduced by the British colonial masters, was patterned after European culture for promotion of their educational philosophies and missionary activities. Subjects like： Latin, English language, Religious studies, simple Arithmetic, artisans and others were included in the earlier curriculum for the benefit of the European economic, social, religious and political ambitions. As Nigerians agitated for independence, unity and fi＇eedom, the educational policies began to change to meeting the local needs of Nigerians at all levels of education. The Phelps-Stokes Commission report of 1922 exposed the inadequacies of educational curriculum used in the Nigerian schools, as not meeting the needs of the people. The 1969 Curriculum conference however, brought a complete revolution to the primary school education in the areas of relevance. For instance, subject like： Yoruba, Hausa and Igbo which were major Nigerian languages, Civic Education and Fine Arts were introduced into the primary school curriculum so as to create in-depth awareness for cultural transmission. The roles of such educational bodies like： NERDC and CESAC were fully discussed in the paper. Policies like： Universal Primary Education （UPE） and Universal Basic Education （UBE） introduced in 1976 and 2004 respectively, were efforts of the government at transforming primary education through culture. Challenges like： inadequate funding, personnel problem and implementation problem were indentified. It is therefore recommended that adequate funding be allocated and made available as well as employment of sufficient qualified personnel. There should be strong political will to make policies effective and people＇s interest should be carried along in policies formulations and implementations.
文摘As part of business translation, web page translation is an effective way of global communication. Accurate and adequate translation of web pages can enhance the enterprises＇ competitiveness. This paper focuses on the features of Chinese and Western web pages of garment enterprises and the translation strategy with the guidance of mass communication theory. Results illustrate that Chinese texts favor symmetrical phrases rich in cultural connotation, whereas English texts prefer plain language with fewer culture-loaded expressions and the latter focuses more on the feeling of audiences. As a result, audience-oriented translation strategy is strongly recommended so as to maximize the communication effect of the enterprise web pages
