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( Cecilia Perez-cruz ),( Carlos N. Cano-gonzalez ),( Jose Fuentes ),( Nagamani Balagurusamy ),( Carolina E. Vita ),( Roque A. Hours ),( Cristobal N. Aguilar ),( Sebastian F. Cavalitto ),( Juan C. Cont 한국키틴키토산학회 2018 한국키틴키토산학회지 Vol.23 No.3
Aspergillus niger biomass, an industrial by-product of citric acid fermentation is an emergent source of glycoderivatives with applications in biofuel, cosmetics, feed, energy, food, medicine, and nanotechnology. In this study, the effect of purified neutral protease for deprotenization of fungal biomass studied at various levels (0, 5, 10, 20 and 40 U/100 mg of biomass) and the saccharification of fungal biomass was evaluated with amylolytic enzymes and chitosanases. The efficiency of deproteinization of fungal biomass was based on the enzyme concentration and contact time. Protease at a concentration of 20 U/100 mg of dry biomass and with a contact time of 8 h achieved 30% final deproteinization. No effect on saccharification of A. niger biomass was observed by treatment with purified amylolytic enzymes. Meanwhile, the endo- and exo-chitosanases treatment yielded 54 g of g reducing sugars (equivalent to amino sugars)/ kg of fungal biomass, which can be employed for tailor-made carbohydrate production.
Cecilia N. Isonguyo,Ituen B. Okon,Akpan N. Ikot,Hassan Hassanabadi 대한화학회 2014 Bulletin of the Korean Chemical Society Vol.35 No.12
We present the solution of Klein Gordon equation with new generalized Morse-like potential using SUSYQM formalism. We obtained approximately the energy eigenvalues and the corresponding wave function in a closed form for any arbitrary l state. We computed the numerical results for some selected diatomic molecules.
Cecilia Cheng 경남대학교 극동문제연구소 2004 ASIAN PERSPECTIVE Vol.28 No.1
Severe acute respiratory syndrome (SARS) was first reported in Guangdong, China in November 2002, followed by an outbreak in the Hong Kong Special Administrative Region (HKSAR) in early March 2003. . Public anxiety has been widespread in both SARS-affected and SARS-unaffected regions. . Population surveys have shown that about 70% percent of Hong Kong respondents expressed considerable fears fear and worries about the SARS outbreak. . The fear of death caused by SARS seems to be stronger and more widespread than the fear of these major killer diseases that have actually threatened the lives of a portion of patients any comparable life-threatening illness. . The distinct patterns of public reactions of Hong Kong people may be categorized into four distinct patternsphases: the individual-difference, the public-anxiety, the irrational-panic, and the-fear-of-infection periods. . Each of these periods was marked by one or more critical events believed to create mass anxiety among Hong Kong people. . The role of the government, mass media, and people in maintaining an optimal level of public anxietywhich alerts people to the danger of the disease while preventing irrational, paranoiac behaviorsis discussed.
Nurses’ Job Satisfaction and Patient Falls
Cecilia D. Alvarez,Joyce J. Fitzpatrick 한국간호과학회 2007 Asian Nursing Research Vol.1 No.2
Purpose The growing concern about the low job satisfaction among nurses and the achievement of positive patient outcomes are critical healthcare issues. The purpose of this descriptive correlational study was to determine the relationship between nurses’ job satisfaction and patient fall rate on adult medical and surgical units. Methods Secondary data from a nurses’ job satisfaction survey at a large not-for-profit acute care hospital on the East coast was used. The National Database of Nursing Quality Indicators–Adapted Index of Work Satisfaction (NDNQI–AIWS) was used to measure nurses’ job satisfaction. The sample included 161 nurses from 12 adult acute medical and surgical units. The study used retrospective data collected by the Department of Nursing on patient fall rate. Pearson’s correlation coefficient was used to determine the relationship between nurse job satisfaction and patient fall rate. In addition, exploratory descriptive analysis was conducted by type of unit (i.e., medical or surgical). Results and Conclusion No significant relationship was found between overall nurses’ job satisfaction and patient fall rate. MD–RN interactions (r = .65) and decision-making (r = .57) were the job satisfaction subscales that showed a significant positive correlation with patient fall rate (p < .05). Recommendations for future research are provided.
Cecilia Goracci,Mutlu Özcan,Lorenzo Franchi,Giuseppe Di Bello,Chris Louca,Alessandro Vichi 대한치과교정학회 2019 대한치과교정학회지 Vol.49 No.6
Objective: To assess shear bond strength and failure mode (Adhesive Remnant Index, ARI) of orthodontic brackets bonded to polymethylmethacrylate (PMMA) blocks for computer-aided design/manufacture (CAD/CAM) fabrication of temporary restorations, following substrate chemical or mechanical treatment. Methods: Two types of PMMA blocks were tested: CAD-Temp® (VITA) and Telio® CAD (Ivoclar-Vivadent). The substrate was roughened with 320-grit sandpaper, simulating a fine-grit diamond bur. Two universal adhesives, Scotchbond Universal Adhesive (SU) and Assure Plus (AP), and a conventional adhesive, Transbond XT Primer (XTP; control), were used in combination with Transbond XT Paste to bond the brackets. Six experimental groups were formed: (1) CADTemp ®/SU; (2) CAD-Temp®/AP; (3) CAD-Temp®/XTP; (4) Telio® CAD/SU; (5) Telio® CAD/AP; (6) Telio® CAD/XTP. Shear bond strength and ARI were assessed. On 1 extra block for each PMMA-based material surfaces were roughened with 180-grit sandpaper, simulating a normal/medium-grit (100 mm) diamond bur, and brackets were bonded. Shear bond strengths and ARI scores were compared with those of groups 3, 6. Results: On CAD-Temp® significantly higher bracket bond strengths than on Telio® CAD were recorded. With XTP significantly lower levels of adhesion were reached than using SU or AP. Roughening with a coarser bur resulted in a significant increase in adhesion. Conclusions: Bracket bonding to CAD/CAM PMMA can be promoted by grinding the substrate with a normal/ medium-grit bur or by coating the intact surface with universal adhesives. With appropriate pretreatments, bracket adhesion to CAD/CAM PMMA temporary restorations can be enhanced to clinically satisfactory levels.
Higher Education Institution's Solid Waste Manasement : Practices, Needs, and Opportunities
Cecilia A. Geronimo,Audie L. Geronimo ASCONS 2018 INTERNATIONAL JOURNAL OF EMERGING MULTIDISCIPLINAR Vol.2 No.3
Solid waste management is everybody’s concern. Every individual is a producer of waste that is why in the University all contributors of waste were involved in the study. Production of wastes is one thing, the type of waste produced is another, especially, solid waste and yet the produced waste is managed is another issue. The study used mixed methods through questionnaire and interviews to gather data on status, practices, needs, and opportunities of solid waste management. The findings revealed that the status of solid waste in the University in terms of its types are biodegradable, non-biodegradable and recyclable; with regards to the quantity of waste produced every day, during weekdays an average of 50 bags, where bag has a dimension of 100 square centimeters, Saturdays an average of 20 bags and Sundays about 10 bags. There is a disposal area, where all the waste bags are dumped, with a total area of 200 sq. meters, tools such as shovel, spade, cart, and rake are used and segregation of waste is being enforced; participation in trash to cash program is encouraged to lessen the waste to be disposed and collected by the waste collector or hauler, and allotted budget of approximately six thousand pesos per dump truck load per week. The students and non-teaching personnel agreed on most of the items which described needs and opportunities of solid waste management while the faculty members agreed on practices and strongly agreed on the needs and opportunities on solid waste management in the University. There are needs to be addressed and plans to improve the current practices on solid waste management and optimize the identified opportunities to be recognized as a Clean and Green University.
Electrochemical oxidation of methyl orange azo dye at pilot flow plant using BDD technology
Cecilia Ramırez,Juan M. Peralta-Hernandez,Adriana Saldana,Berenice Hernandez,Roberto Acero,Ricardo Guerra,Sergi Garcia-Segura,Enric Brillas 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.2
Solutions of methyl orange azo dye were degraded by electrochemical oxidation using a 3 L flow plant with a boron-doped diamond (BDD)/stainless steel cell operating at constant current density, ambient temperature and liquid flow rate of 12 L min-1. A 23 factorial design considering the applied current density, azo dye concentration and electrolysis time as variable independents was used to analyze the process by response surface methodology. LC–MS analysis revealed the formation of seven oxidation products from the cleavage of the –N55N– group of the dye, followed by deamination, formation of a nitro group and/or desulfonation of the resulting aromatics.
Cecilia O. Alabi,Inderbir Singh,Oluwatoyin A. Odeku 한국약제학회 2018 Journal of Pharmaceutical Investigation Vol.48 No.3
In the present study, tropical starches from three botanical sources, namely millet starch obtained from the grains of Pennistum glaucum (L) R Br (family Poaceae), sorghum starch from the grains of Sorghum bicolor L. Moench (family Gramineae) and cocoyam starch from the tubers of Colocasia esculenta (L) Schott (family Araceae), have been modified and evaluated as directly compressible excipients in tramadol tablet formulations. The starches were extracted from the relevant plant parts and modified by pregelatinization followed freeze drying and used as excipients in tramadol tablets and the tablet properties compared with those made with the natural forms of the starches. The results indicate that starches from the three botanical sources vary in their properties and pregelatinization led to the modification of the physicochemical and material properties of the starches. The pregelatinized starches exhibited better flowability and compressibility than the natural starches. Tramadol tablets prepared with freeze-dried pregelatinized starches generally exhibited higher crushing strength but lower friability than those prepared with the natural starches. The rankings of the crushing strength and the disintegration and dissolution times was cocoyam > millet > sorghum starches, with tramadol tablets containing freeze-dried pregelatinized starches exhibiting significantly (p < 0.01) higher disintegration and dissolution times than tablets made with the natural forms of starches. The freeze-dried pregelatinized starches were suitable as directly compressible excipients and provided controlled release of tramadol indicating their potential application in formulations where slower drug release is desired.