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Objective To study the temperature control method of the cooling water system for Siemens medical proton and heavy-ion synchrotron.Methods The return water temperature was used as the input variable of the control program,temperature prediction method was applied to controlling valve opening,and the capacity of water tank at backwater-side was increased to enhance temperature buffer capability.Results The optimized system adapted itself to multi loading conditions of the synchrotron,which achieved 2 ℃ peak elimination in case of return water at 32 ℃ or less to limit the input water temperature within (27±1) ℃.The failure rate of temperature deviation was decreased from 64％ to 8％.Conclusion The optimized cooling water system with three-layer structure fulfills the requirements of Siemens proton heavy-ion synchrotron operation.
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Objective To investigate the students' perception and effectiveness of the flipped class model in bilingual education in special population nutrition class.Method Two classes of Shanghai University of Traditional Chinese Medicine were exposed to either the flipped class model or the traditional class model.In the flipped class model,the students were provided a wealth of teaching resources such as short videos before class.In addition,a series of pedagogical approaches were used to develop the students' cognitive ability.The questionnaire survey and class quiz were employed to evaluate the students' perception and effectiveness of the flipped class model.Results The students in the experimental group have significant higher scores in professional vocabulary section [(23.10 ± 0.71) vs.(21.10 ± 0.67)],listening and speaking section [(21.20 ± 0.78) vs.(19.00 ± 0.74)],essay questions section [(37.80 ± 0.96) vs.(34.40 ± 1.15)],and total test scores [(82.20 ± 1.50) vs.(74.50 ± 1.52)] than did the students in the control group.In addition,the flipped class model ignites the students' learning interest,reduces the learning anxiety,and develops their learning autonomy.Conclusion The flipped class model is a highly effective means that promotes the student centered active learning.This study provides reference for implementation of the flipped class model in Chinese medical bilingual education.
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Object To establish a proper research evaluation system for level-two general hospital.Method By using Delphi method,experts were invited by letter to review research evaluation indices for three times.Result Totally 62 indices were weighted and evaluated,including two primary-degree indices,14 secondary-degree indices,and 46 third-degree indices. A research evaluation system was preliminarily established in a level-two general hospital.Conclusion The evaluation system is simple and practicable,and can reflect the main aspects of research in the leveltwo general hospitals.
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This paper systematicly reviewed the classification and function of evaluation system for hospital scientific research based on the current and past status in domestic and internation. Differenct approches to scientific research were discussed for the purpose to further improve hospital evaluation system and to establish an appropriate system for the hospital development.
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BACKGROUND: Measuring the slope of proximal tibiofibular joint may elucidate the anatomical structure and type of proximal tibiofibular joint, and evaluate the stability of proximal tibiofibular joint. OBJECTIVE: To investigate the measurement methods and clinical significance of the joint slope by comparing the slope measurement of bilateral proximal tibiofibular joint surface on X-ray and 64-row spiral CT reconstruction.METHODS: One hundred normal adult volunteers, including 50 males and 50 females, aged 18-90 years, were photographed in double knees via internal rotation to 30°, 45° and 60°, respectively and scanned with 64-row spiral CT, tibiofibular bone (including knee joints) was reconstructed. The included angle between proximal tibiofibular articular surface and the longitudinal axis of the fibula shaft, between the proximal tibiofibular articular surface and the horizontal line, were measured using an angle square.RESULTS AND CONCLUSION: There were great variations of the data in the same proximal tibiofibular joint measured by X-ray and spiral CT. X-ray results are affected by the site of photograph position, and the slope of articular surface is estimated, so the 64-row spiral CT is an accurate and convenient method to reconstitute the slope of proximal tibiofibular joints. Spiral CT could be used to distinguish the dislocation and instability of the proximal tibiofibular joint, accordingly reduce the clinical misdiagnosis.
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In this paper is presented the Lorenz plot, the qualitative analyses and quantitative parameters of the plot. The long axis vs short axis(LVS) parameter is given. Atrial Fibrillation Electrocardiogram (AF ECG) is compared with sinus ECG by use of Lorenz plot. Then the difference in their plots and the parameter of LVS is pointed out. Lorenz plot finding is useful for the AF disease in automatic diagnoses of ECG signals.
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Humans , Atrial Fibrillation , Diagnosis , Electronic Data Processing , Methods , Electrocardiography, Ambulatory , Methods , Heart Rate , Signal Processing, Computer-AssistedABSTRACT
QRS complex has its distinct characteristics as compared with other waves in Electrocardiogram (ECG). In this paper is introduced a kind of algorithm to identify the R waves, which combines forward-backward difference algorithm, half-wave width algorithm and R-R interval algorithm. The algorithm is simple and reliable. It is in possession of the ability of anti-interference such as baseline drifting, high P waves or high T waves, and severe high-frequency interference. The average accuracy for identification is higher than 99.5%. The results of the experiment and the analyses are also presented.
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Humans , Algorithms , Electrocardiography , Methods , Numerical Analysis, Computer-Assisted , Signal Processing, Computer-AssistedABSTRACT
Objective To compare the hemodynamic responses to orotracheal intubation during emergency operation with the proseal laryngeal mask airway and endotracheal Intubation.Methods Fifty six patients who were ASA GRADE Ⅰ-Ⅱ before onset undergoing orotracheal intubation were randomly dirideed into either without laryngoscope direct proseal laryngeal mask intubation(PLMA) group or direct laryngoscope endotracheal intubation(TT) group.SBP、DBP、HR and SpO2 were recorded before,durring and 5 minutes after intubation.Intubation time and first attempt insertion success rate were recordeddso.All patients were followed up postoperatively for adverse effects like sore throat or hoarseness.Results In intubation time、first attempt insertion success rate and adverse effects like sore throat or hoarseness,PLMA group was 96.43%,(19.7?5.7)s and 7.1%,TT group was 100%,(27.9?11.3)s and 39.29%.Intubation time was significantly shorter and adverse effects like sore throat or hoarseness were lower in the PLMA group than TT group(P
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Service recovery as a theory of services marketing has gradually been applied to hospital services. By expounding the concept, significance and principle of service recovery, the paper puts forward some strategies that ought to be adopted in service recovery: ①preventive strategy; ②timely strategy; ③ the strategy of cultivating the employees capability of on the spot service recovery; ④ the strategy of laying stress on follow up and anticipation and prevention of errors.
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Plasma angiotensin II (PA II )and aldosterone (PA) were measured in 89 cases of diabetes mellitus by means of radioimmunoassay, compared with 40 normal controls. The results showed that PA II and PA increased significantly in diabetic patients without complications and with ketoacidosis (P
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0.001). The elevation of ?_2m appeared before the abnormality of BUN, blood Cr and urine protein in some patients. It is considered that ?_2m in serum and urine is a sensitive index of the early lesion of renal function in diabetics.
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The pitiutary function tests in diabetes insipidus were compared by means of analyses of clinical data. It is considered that the water deprivation-ADH test is more reliable than the hypertonic saline test in differential diagnosis of complete diabetes insipidus from partial diabetes insipidus and central diabetes insipidus from nephrogenic diabetes insipidus. Some suggestions on the time of water deprivation test, the improvement of hypertonic saline solution test and diagnosis of partial nephrogenic diabetes insipidus were made in this paper.