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        검색결과 1,884

        589.
        2020.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Objectives: Free Water Protocols (FWPs) are implemented selectively because of mixed evidence on the benefits associated with their use. This retrospective study examines the implementation a long-standing clinical program and descriptively reports rehabilitation and quality care outcomes. Methods: Data were collected over 6 years (n = 575). Inpatient rehabilitation setting. Variables included in this study were age, medical diagnoses, rate of acute care hospital transfers, discharge destinations, length of time on FWP. Results: Cohort consisted of older adults (M = 68.43, SD = 15.11), with diagnosis of stroke (60.2%), brain injury (19.1%), spinal cord injury (7.3%), cardiac (1%), orthopedics (5%), other (13.1%). Acute care hospital transfers occurred in 6% as descriptively compared to national average (14%). Additionally, participants tolerated FWP for days (M = 14.1, SD = 14.4) and most went home following rehabilitation Discussion: This retrospective study concludes the feasibility of implementing a FWP in a rehabilitation facility and reports descriptive outcomes. Experimental research is required for conclusions to be made regarding effectiveness of the FWP for dysphagia.
        4,000원
        591.
        2020.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was conducted to develop a high-moisture food waste dryer that uses steam as a direct heat source to improve the drying speed. Another objective was to verify its performance through experiments. A dryer with a drying capacity of 10,000 kg/hr, which uses steam from an incineration plant as a drying heat source, was fabricated. The performance and applicability of the dryer were verified through drying experiments, in which the food waste collected from large restaurants near the incineration plant was used as the experimental material. The drying experiment results showed that the input steam temperature increased by 21℃ from approximately 145℃ to 166℃ compared to the case in which drying was performed by converting steam into heated air. The drying speed increased by 1.5 times from approximately 0.63 to 0.94 %/hr, and drying up to approximately 20%(wb) moisture content was possible. The drying energy rate, which represents the ratio of the energy consumed for drying to the input energy, increased by approximately ten times from 7.17% to 70.87%. The total drying time still remained approximately 100 hr due to the re-condensation of moisture. When steam was directly used as a drying heat source to improve the drying speed of food waste containing high moisture, the drying speed, water content after drying, and drying energy rate were clearly improved compared to the case in which steam was converted into heated air for use. Therefore, it was deemed necessary to develop a dryer that directly uses steam from an incineration plant for drying. To shorten the total drying time, it is necessary to develop a device that solves the problem of moisture condensation in the dryer.
        4,000원
        594.
        2020.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Colibacillosis, which is caused by Escherichia coli (E. coli), is one of the most common infectious diseases affecting poultry and causes the great economic losses to poultry production worldwide. The present study investigated the presence of E. coli in broiler chickens affected by colibacillosis and reared at various locations in Tiaret Province as well as evaluated the susceptibility of isolated E. coli strains to various antimicrobial agents. A total of 110 samples collected from 55 broiler chickens representing liver (n=55) and spleen (n=55) showing lesions suspected to be colibacillosis were analyzed by conventional methods, and 33 E. coli isolates were tested on a panel of seven antimicrobial agents using the disk diffusion method. The overall isolation rates of E. coli were 60% (33/55) and 50.9% (56/110) in whole chickens and organs, respectively. There was no variation in the isolation rate between organs: 50% (28/56) for liver and 50% (28/56) for spleen. All E. coli isolates tested showed 100% resistance to Nalidixic acid and Ofloxacine, followed by 93.93%, 90.90%, and 51.51% resistance to Tetracycline, Trimethoprim-sulfamethoxazole (Co-trimoxazole), and Chloramphenicol, respectively. However, low resistance to Gentamycin was observed (12.12%), whereas all E. coli isolates were susceptible to Colistin sulfate. Multidrug resistance was observed in 96.96% (32/33) of the isolates tested. We conclude that E. coli was largely present in broiler chickens affected by colibacillosis in Tiaret Province, and multidrug-resistant E. coli isolates showed high resistance to multiple antibiotics.
        4,000원
        595.
        2020.06 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        We study the photometric phase curves for the planets of our solar system which can be considered as a prototypical non-compact planetary system. We focus on modeling the small variations caused by three effects: reflection, ellipsoidal, and Doppler beaming. Theoretical predictions for these photometric variations are proposed, considering a hypothetical external observer. Unlike similar studies of multi-planetary systems, the physical and geometrical parameters for each planet of the solar system are well-known. Therefore, we can accurately evaluate the relationships that shape the planetary light curves for a fictitious external observer. Our results suggest that, for all planets, the ellipsoidal effect is very weak while the Doppler beaming effect (DBE) is, in general, dominant. In fact, the DBE seems to be the principal cause of variations of the light curves for the planets of the solar system. However, for Mercury and Venus the Doppler beaming and reflection effects have similar amplitudes. The phase curves obtained for the planets of the solar system show new interesting features of interest for the study of other non-compact planetary systems.
        4,000원
        596.
        2020.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study evaluated effects of the addition of garlic powder allicin (GPA) mixture on rumen fermentation with methane in Hanwoo steer. On in vitro trial, two experimental groups were used: control (without GPA) and treatment group (addition of 0.1% GPA mixed with the basal concentrate). Similar to in vitro trial, two experimental groups were used in vivo trial. Five Hanwoo steers (3 steers in one group and 2 in another group; average body weight = 500 ± 43 kg) were assigned by crossover design for 20 d consists of 15 d diet adaptation and 5 d data collection in each experimental period. Daily feed intake and enteric methane production were recorded by an automated head chamber system. The results of in vitro study showed that the GPA treatment group had higher acetic acid (24.30 vs 23.45 mmol/L) and butyric acid (16.55 vs 15.47 mmol/L) concentrations, but lower CH4 production (1.40 vs 2.71 mmol/ml) after 24 h of incubation compared to the control (p<0.05). Total gas, propionic acid, total volatile fatty acid (VFA), and acetic acid: propionic acid ratio were not affected by treatment after 24 h incubation. In the in vivo experiment, rumen pH and VFA were not significantly different between treatments (p>0.05), except acetic acid, which was significantly higher in GPA mixture group (60.97 vs 53.94 mM) than in the control group (p<0.05). Furthermore, no significant differences were recorded in CH4 production (g/d) and CH4 yield (g/kg DMI) between the two groups (p>0.05). In conclusion, the addition of 0.1% GPA mixture reduced CH4 proudcition on in vitro trial, but no effect on in vivo trial.
        4,000원
        597.
        2020.06 구독 인증기관 무료, 개인회원 유료
        The purpose of this study is to identify methods for attracting more students into maritime colleges, for making sure they remain happy, satisfied with their decision and finally for enabling them to have job security. At International Maritime College Oman (IMCO), the Deck Officer program is a field of study that incorporates the ancient knowledge and techniques in navigation with the latest information and technology in the maritime industry. The industry requires officers who are well trained and capable of working as professionals on board vessels. The goal is to attract more students into the maritime industry, to ensure their achievement in future and to make sure they are happy with their choice to join the maritime industry. For the purposes of this research, a questionnaire about deck cadets’ experiences of work and life at sea, with thirty-one questions, was prepared, based on the authors’ experiences, and distributed to deck cadets studying in International Maritime College of Oman (IMCO). It was answered by sixty deck students in years two, three and four. The students were of both genders and from various countries including Oman, UAE, Saudi Arabia, Bahrain, Qatar and Egypt. The age ranges varied between eighteen to twenty-five. The main problems adversely affecting the students’ happiness and satisfaction were found to be related to loneliness and emotional insecurity at sea, resulting from inadequate opportunities for communication with family and friends, as well as uncertainty about employment prospects. Colleges need to focus more on supporting cadets’ emotional well-being. Shipping companies also need to play a greater role in reducing cadets’ uncertainty by sponsoring them, by providing guarantees of employment and by looking after them well at sea, especially by ensuring availability of cheap internet.
        4,200원
        599.
        2020.06 구독 인증기관 무료, 개인회원 유료
        The changes of the Fourth Industrial Revolution (Industry 4.0) are inevitable in all areas of daily life, from government to healthcare and commerce, including the educational field. Education 4.0 brings potential challenges to schools around the globe, such as digital technology, personalized data, and a connected world. Thus, this paper presents a Mexican case study about a classroom enhanced with digital technology to study the challenges that both students and teachers face to acquire and transmit the skills and competencies that Industry 4.0 requires. As a preliminary result, we found that the probability of students accepting this technology for learning is very high.
        4,000원
        600.
        2020.06 구독 인증기관 무료, 개인회원 유료
        This paper reports a survey done that examined the relationship between the use of Facebook, WhatsApp, Twitter and Youtube on students’ academic performance in Osun State secondary schools. The study adopted the descriptive research design. The population of the study comprised all 7,767 teachers in Osun State secondary schools. The sample of 385 teachers was randomly selected. Two self-designed questionnaires were used. The data were analysed using Pearson Product Movement Correlation Statistics (PPMCS) at 0.05 level of significant. The findings showed that the use of Facebook (r = 0.692, df = 2071 & p<0.05), WhatsApp (r = 0.615, df = 2071 & p<0.05), Twitter (r = 0.542, df = 2071 & p<0.05), and Youtube (r = 0.461, df = 2071 & p<0.05) were significantly related to students’ academic performance of Osun State secondary schools. The study concluded that that the use of Facebook, WhatsApp, Twitter and Youtube among teachers and students had positive contributions to students’ academic performance of Osun State secondary schools. The findings implicate that the teachers and students in Osun State secondary schools and Nigeria at large should admire the use of social medial such as Facebook WhatsApp, Twitter and Youtube as an interactive forum for teaching-learning activities.
        4,000원