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A Comparison of Singapore Parents and Children's Use of the Internet and Perceptions of its Dangers
LIM, CHER PING,KHOO, ANGELINE,WILLIAMS, MICHAEL D. 이화여자대학교 국제통상협력연구소 2003 Jounal of APEC Studies Vol.5 No.1
This paper describes a study that aims to investigate existing gaps of awareness, concerns and measures taken between parents and children regarding Internet dangers of misinformation, pornography, Internet addiction, violent games and sexual predators. In order for parents to be adequately equipped to guide their children, such gaps have to be narrowed. Parents need to be informed of what their children are aware of these dangers, of their children's attitudes towards these dangers, and how their children perceive the strategies that can be taken. Key findings of the study are: Parents are more aware and concerned than children regarding the dangers of the Internet, more parents than children are in favor of both educational and control strategies to be taken with regard to accessing pornographic sites and offline meetings, both parents and children indicate that they are more in favor of educational rather than control strategies.
Wang Li-Jen,Jinzaki Masahiro,Tan Cher Heng,Oh Young Taik,Shinmoto Hiroshi,Lee Chau Hung,Patel Nayana U.,Chang Silvia D.,Westphalen Antonio C.,Kim Chan Kyo 대한영상의학회 2023 Korean Journal of Radiology Vol.24 No.11
Objective: To elucidate the use of radiological studies, including nuclear medicine, and biopsy for the diagnosis and staging of prostate cancer (PCA) in clinical practice and understand the current status of PCA in Asian countries via an international survey. Materials and Methods: The Asian Prostate Imaging Working Group designed a survey questionnaire with four domains focused on prostate magnetic resonance imaging (MRI), other prostate imaging, prostate biopsy, and PCA backgrounds. The questionnaire was sent to 111 members of professional affiliations in Korea, Japan, Singapore, and Taiwan who were representatives of their working hospitals, and their responses were analyzed. Results: This survey had a response rate of 97.3% (108/111). The rates of using 3T scanners, antispasmodic agents, laxative drugs, and prostate imaging-reporting and data system reporting for prostate MRI were 21.6%−78.9%, 22.2%−84.2%, 2.3%−26.3%, and 59.5%−100%, respectively. Respondents reported using the highest b-values of 800−2000 sec/mm2 and fields of view of 9−30 cm. The prostate MRI examinations per month ranged from 1 to 600, and they were most commonly indicated for biopsy-naïve patients suspected of PCA in Japan and Singapore and staging of proven PCA in Korea and Taiwan. The most commonly used radiotracers for prostate positron emission tomography are prostate-specific membrane antigen in Singapore and fluorodeoxyglucose in three other countries. The most common timing for prostate MRI was before biopsy (29.9%). Prostate-targeted biopsies were performed in 63.8% of hospitals, usually by MRI-ultrasound fusion approach. The most common presentation was localized PCA in all four countries, and it was usually treated with radical prostatectomy. Conclusion: This survey showed the diverse technical details and the availability of imaging and biopsy in the evaluation of PCA. This suggests the need for an educational program for Asian radiologists to promote standardized evidence-based imaging approaches for the diagnosis and staging of PCA.
( Ana Zarate ),( July Florez ),( Edgardo Angulo ),( Lourdes Varela-prieto ),( Cherlys Infante ),( Fredy Barrios ),( Beatriz Barraza ),( D. I Gallardo ),( Jorge Valdes ) 한국미생물생명공학회(구 한국산업미생물학회) 2017 Journal of microbiology and biotechnology Vol.27 No.6
The use of microalgal biomass is an interesting technology for the removal of heavy metals from aqueous solutions owing to its high metal-binding capacity, but the interactions with bacteria as a strategy for the removal of toxic metals have been poorly studied. The goal of the current research was to investigate the potential of Burkholderia tropica co-immobilized with Chlorella sp. in polyurethane discs for the biosorption of Hg(II) from aqueous solutions and to evaluate the influence of different Hg(II) concentrations (0.041, 1.0, and 10 mg/l) and their exposure to different contact times corresponding to intervals of 1, 2, 4, 8, 16, and 32 h. As expected, microalgal bacterial biomass adhered and grew to form a biofilm on the support. The biosorption data followed pseudo-second-order kinetics, and the adsorption equilibrium was well described by either Langmuir or Freundlich adsorption isotherm, reaching equilibrium from 1 h. In both bacterial and microalgal immobilization systems in the coimmobilization of Chlorella sp. and B. tropica to different concentrations of Hg(II), the kinetics of biosorption of Hg(II) was significantly higher before 60 min of contact time. The highest percentage of biosorption of Hg(II) achieved in the co-immobilization system was 95% at pH 6.4, at 3.6 g of biosorbent, 30 ± 1°C, and a mercury concentration of 1 mg/l before 60 min of contact time. This study showed that co-immobilization with B. tropica has synergistic effects on biosorption of Hg(II) ions and merits consideration in the design of future strategies for the removal of toxic metals.