Aims: To screen for the predominant bacteria strains distributed in clean rooms and to analyze their phylogenetic relationships. Methods and Results: The bacteria distributed in air, surfaces and personnel in clean ro...Aims: To screen for the predominant bacteria strains distributed in clean rooms and to analyze their phylogenetic relationships. Methods and Results: The bacteria distributed in air, surfaces and personnel in clean rooms were routinely moni-tored using agar plates. Five isolates frequently isolated from the clean rooms of an aseptic pharmaceutical production workshop were selected based on their colony and cell morphology characteristics. Their physiological and biochemical properties, as well as partial 16S rDNA sequences, were analyzed. Results showed that all the five isolates belong to Gram positive bacteria, of which three were Staphylococcus, one Microbacterium and one Bacillus species. Sensitivity tests for these bacteria isolates to 3 disin-fectants showed that isolate F03 was obtuse, and had low susceptivity to UV irradiation, while isolates F02, F01 and F04 were not sensitive to phenol treatment. Isolates F04, F01 and F05 were resistant to chlorhexidine gluconate. Conclusion: Bacteria widely distributed in clean rooms are mainly a group of Gram positive strains, showing high resistance to selected disinfectants. Sig-nificance and impact of the study: Clean rooms are essential in aseptic pharmaceutical and food production. Screening bacteria isolates and identifying them is part of good manufacturing practices, and will aid in finding a more effective disinfection method.展开更多
An iodine‐catalyzed sulfenylation of pyrazoles at room temperature is described,in which a variety of pyrazoles were well tolerated and the desired products were obtained in good to excellent yields.
The ZnO nanostructures have been synthesized and studied as the sensing element for the detection of H2S. The ZnO nanostructures were synthesized by hydrothermal method followed by sonication for different interval of...The ZnO nanostructures have been synthesized and studied as the sensing element for the detection of H2S. The ZnO nanostructures were synthesized by hydrothermal method followed by sonication for different interval of time i.e. 30, 60, 90 and 120 min. By using screen printing method, thick films of synthesized ZnO nanostructure were deposited on glass substrate. Gas sensing properties of ZnO nanostructure thick films were studied for low concentration H2S gas at room temperature. The effects of morphology of synthesized ZnO nanostructure on gas sensing properties were studied and discussed. ZnO nanostructure synthesized by this method can be used as a promising material for semiconductor gas sensor to detect poisonous gas like H2S at room temperature with high sensitivity and selectivity.展开更多
In A Room of One's Own,Virginia Woolf argued her famous proposition that a woman needed to have a room of her own to achieve literary autonomy,and laid the foundation for present-day feminist criticism.Yet the aut...In A Room of One's Own,Virginia Woolf argued her famous proposition that a woman needed to have a room of her own to achieve literary autonomy,and laid the foundation for present-day feminist criticism.Yet the author believes that economic independent does not foster women's identity with certainty.In this thesis,the author explores the crucial place of spiritual and economic independence in building up women's autonomy through analyzing Michael Cunningham Pulitzerwinning work The Hours,which he draws inventively on the life of Virginia Woolf and her work Mrs.Dalloway.展开更多
The zinc oxide(ZnO)nanoparticles(NPs)sensors were prepared in-situ on the gas-sensing electrodes by a one-step simple sol-gel method for the detection of hydrogen sulfide(H_(2)S)gas.The sphere-like ZnO NPs were charac...The zinc oxide(ZnO)nanoparticles(NPs)sensors were prepared in-situ on the gas-sensing electrodes by a one-step simple sol-gel method for the detection of hydrogen sulfide(H_(2)S)gas.The sphere-like ZnO NPs were characterized by scanning electron microscopy(SEM),transmission electron microscopy(TEM),x-ray diffraction(XRD),energy dispersive x-ray analysis(EDX),and their H_(2)S sensing performance were measured at room temperature.Testing results indicate that the ZnO NPs exhibit excellent response to H_(2)S gas at room temperature.The response value of the optimal sample to750 ppb H_(2)S is 73.3%,the detection limit reaches to 30 ppb,and the response value is 7.5%.Furthermore,the effects of the calcining time and thickness of the film on the gas-sensing performance were investigated.Both calcining time and film thickness show a negative correlation with the H_(2)S sensing performance.The corresponding reaction mechanism of H_(2)S detection was also discussed.展开更多
The WFO Technical Forum 2009 (WTF),sponsored by World Foundrymen Organization,organized by Czech Foundrymens Society,was held on the 1st,2nd and 3rd June 2009,at the Hotel Voronez in Brno,Czech Republic. The 4 day... The WFO Technical Forum 2009 (WTF),sponsored by World Foundrymen Organization,organized by Czech Foundrymens Society,was held on the 1st,2nd and 3rd June 2009,at the Hotel Voronez in Brno,Czech Republic. The 4 days included technical presentations,social events and the very important Ph.D conference. During the event there were the General Assembly bringing together the organizations members from around the world,and an exhibition,supported by 34 world's leading foundry based companies. In addition the event coincided with the Czech Foundrymens Society Foundry Days now in its 46th year.……展开更多
A Room of One’s Own is a masterpiece by Virginia Woolf, which describes her understanding of literary creation and the issue of women and fiction. The content of this book is based on Woolf’s two speeches at Cambrid...A Room of One’s Own is a masterpiece by Virginia Woolf, which describes her understanding of literary creation and the issue of women and fiction. The content of this book is based on Woolf’s two speeches at Cambridge, with the theme of “Women and fiction.” Through the analysis of the history and current situation of female literary creation, the paper points out that women should have the courage and right to fight for independent economic power and social status. “Oxbridge” is a combined term of Oxford and Cambridge, and Oxbridge pictures dominate the first chapter of A Room of One’s Own, which are the focus of this paper. Through a detailed analysis of the different indoor and outdoor pictures of Oxbridge, including nature, landscape, humanistic architecture and the “pictures” imagined in the narrator’s mind, this paper discusses the existence of Victorian women and Woolf’s feminist thoughts so as to provide possible implications for the social survival of contemporary women. The study is also concerned with Woolf’s Eco-feminism, stream of consciousness and other artistic skills.展开更多
正Cafiu's Secretary-General Ni Jian attended UN Sustainable Development Conference (Rio +20) held in Rio de Janeiro, Brazil from June 16 to 21. This is another large-scale, high-level event in global sustainable d...正Cafiu's Secretary-General Ni Jian attended UN Sustainable Development Conference (Rio +20) held in Rio de Janeiro, Brazil from June 16 to 21. This is another large-scale, high-level event in global sustainable development after the 1992 UN Environment and Development Conference.展开更多
Adelegation led by Prof. Chen Shiqiu, Vice President of the China Society for Human Rights Studies (CSHRS) andexpert of the UN Sub-Commission on the Promotion and Protection of Human Rights, attended ASEM People’s Fo...Adelegation led by Prof. Chen Shiqiu, Vice President of the China Society for Human Rights Studies (CSHRS) andexpert of the UN Sub-Commission on the Promotion and Protection of Human Rights, attended ASEM People’s Forum V held in Hanoi, Vietnam on 6-9 September, 2004.展开更多
Peter is in his room. He is sitting on the floor. He is fixing (修理) his tape recorder(磁带录音机). His radio is on. He's listening to music. But look at Peter's room. What a mess (混乱)! His cassettes (盒式...Peter is in his room. He is sitting on the floor. He is fixing (修理) his tape recorder(磁带录音机). His radio is on. He's listening to music. But look at Peter's room. What a mess (混乱)! His cassettes (盒式磁带) are lying all over the room. Two cassettes are on the table. Three are under the table. A big recorder is on展开更多
基金Project (No. 30371703) supported by the National Natural ScienceFoundation of China
文摘Aims: To screen for the predominant bacteria strains distributed in clean rooms and to analyze their phylogenetic relationships. Methods and Results: The bacteria distributed in air, surfaces and personnel in clean rooms were routinely moni-tored using agar plates. Five isolates frequently isolated from the clean rooms of an aseptic pharmaceutical production workshop were selected based on their colony and cell morphology characteristics. Their physiological and biochemical properties, as well as partial 16S rDNA sequences, were analyzed. Results showed that all the five isolates belong to Gram positive bacteria, of which three were Staphylococcus, one Microbacterium and one Bacillus species. Sensitivity tests for these bacteria isolates to 3 disin-fectants showed that isolate F03 was obtuse, and had low susceptivity to UV irradiation, while isolates F02, F01 and F04 were not sensitive to phenol treatment. Isolates F04, F01 and F05 were resistant to chlorhexidine gluconate. Conclusion: Bacteria widely distributed in clean rooms are mainly a group of Gram positive strains, showing high resistance to selected disinfectants. Sig-nificance and impact of the study: Clean rooms are essential in aseptic pharmaceutical and food production. Screening bacteria isolates and identifying them is part of good manufacturing practices, and will aid in finding a more effective disinfection method.
基金supported by the National Natural Science Foundation of China(21402103,21772107,31471808)the China Postdoctoral Science Foundation(150030)the Research Fund of Qingdao Agricultural University's Highlevel Person(631303)~~
文摘An iodine‐catalyzed sulfenylation of pyrazoles at room temperature is described,in which a variety of pyrazoles were well tolerated and the desired products were obtained in good to excellent yields.
文摘The ZnO nanostructures have been synthesized and studied as the sensing element for the detection of H2S. The ZnO nanostructures were synthesized by hydrothermal method followed by sonication for different interval of time i.e. 30, 60, 90 and 120 min. By using screen printing method, thick films of synthesized ZnO nanostructure were deposited on glass substrate. Gas sensing properties of ZnO nanostructure thick films were studied for low concentration H2S gas at room temperature. The effects of morphology of synthesized ZnO nanostructure on gas sensing properties were studied and discussed. ZnO nanostructure synthesized by this method can be used as a promising material for semiconductor gas sensor to detect poisonous gas like H2S at room temperature with high sensitivity and selectivity.
文摘In A Room of One's Own,Virginia Woolf argued her famous proposition that a woman needed to have a room of her own to achieve literary autonomy,and laid the foundation for present-day feminist criticism.Yet the author believes that economic independent does not foster women's identity with certainty.In this thesis,the author explores the crucial place of spiritual and economic independence in building up women's autonomy through analyzing Michael Cunningham Pulitzerwinning work The Hours,which he draws inventively on the life of Virginia Woolf and her work Mrs.Dalloway.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.11904209 and 61904098)the Natural Science Foundation of Shandong Province,China(Grant No.ZR2019QF018)Higher Education Research and Development Program of Shandong Province,China(Grant No.J18KA242)。
文摘The zinc oxide(ZnO)nanoparticles(NPs)sensors were prepared in-situ on the gas-sensing electrodes by a one-step simple sol-gel method for the detection of hydrogen sulfide(H_(2)S)gas.The sphere-like ZnO NPs were characterized by scanning electron microscopy(SEM),transmission electron microscopy(TEM),x-ray diffraction(XRD),energy dispersive x-ray analysis(EDX),and their H_(2)S sensing performance were measured at room temperature.Testing results indicate that the ZnO NPs exhibit excellent response to H_(2)S gas at room temperature.The response value of the optimal sample to750 ppb H_(2)S is 73.3%,the detection limit reaches to 30 ppb,and the response value is 7.5%.Furthermore,the effects of the calcining time and thickness of the film on the gas-sensing performance were investigated.Both calcining time and film thickness show a negative correlation with the H_(2)S sensing performance.The corresponding reaction mechanism of H_(2)S detection was also discussed.
文摘 The WFO Technical Forum 2009 (WTF),sponsored by World Foundrymen Organization,organized by Czech Foundrymens Society,was held on the 1st,2nd and 3rd June 2009,at the Hotel Voronez in Brno,Czech Republic. The 4 days included technical presentations,social events and the very important Ph.D conference. During the event there were the General Assembly bringing together the organizations members from around the world,and an exhibition,supported by 34 world's leading foundry based companies. In addition the event coincided with the Czech Foundrymens Society Foundry Days now in its 46th year.……
文摘A Room of One’s Own is a masterpiece by Virginia Woolf, which describes her understanding of literary creation and the issue of women and fiction. The content of this book is based on Woolf’s two speeches at Cambridge, with the theme of “Women and fiction.” Through the analysis of the history and current situation of female literary creation, the paper points out that women should have the courage and right to fight for independent economic power and social status. “Oxbridge” is a combined term of Oxford and Cambridge, and Oxbridge pictures dominate the first chapter of A Room of One’s Own, which are the focus of this paper. Through a detailed analysis of the different indoor and outdoor pictures of Oxbridge, including nature, landscape, humanistic architecture and the “pictures” imagined in the narrator’s mind, this paper discusses the existence of Victorian women and Woolf’s feminist thoughts so as to provide possible implications for the social survival of contemporary women. The study is also concerned with Woolf’s Eco-feminism, stream of consciousness and other artistic skills.
文摘正Cafiu's Secretary-General Ni Jian attended UN Sustainable Development Conference (Rio +20) held in Rio de Janeiro, Brazil from June 16 to 21. This is another large-scale, high-level event in global sustainable development after the 1992 UN Environment and Development Conference.
文摘Adelegation led by Prof. Chen Shiqiu, Vice President of the China Society for Human Rights Studies (CSHRS) andexpert of the UN Sub-Commission on the Promotion and Protection of Human Rights, attended ASEM People’s Forum V held in Hanoi, Vietnam on 6-9 September, 2004.
文摘Peter is in his room. He is sitting on the floor. He is fixing (修理) his tape recorder(磁带录音机). His radio is on. He's listening to music. But look at Peter's room. What a mess (混乱)! His cassettes (盒式磁带) are lying all over the room. Two cassettes are on the table. Three are under the table. A big recorder is on
