A composite nystagmus classification framework enhanced by dual attention mechanism is proposed to address the problem that the existing researches only identify whether nystagmus occurs in a horizontal,vertical,or axial direction,but fail to consider the issue of composite nystagmus composed of multiple directions with various intensities in clinical practice.A spatiotemporal concentration algorithm for nystagmus videos is presented,and it combines convolutional neural networks and Hough transform to remove interference from invalid frames and regions and to improve the quality of nystagmus videos.Then,a dense optical flow algorithm is used to extract the optical flow field of eye movement.Finally,a composite nystagmus classification network based on dual attention mechanism enhancement is constructed.An improved efficient channel attention module is used to effectively obtain the direction and intensity of nystagmus in different channels of the optical flow map;and a temporal attention module is added at the end of the bidirectional long short-term memory network to achieve significant expression of classification results based on different temporal features.On the nystagmus dataset provided by the cooperating hospital,the proposed method has an accuracy rate of 83.17%for composite nystagmus classification,and achieved accuracy rates of 91.03%,89.74%,and 86.05%for individual horizontal,vertical,and axial nystagmus classifications.The proposed method realizes the intelligent classification of composite nystagmus and is valuable in clinic.

Objective : To investigate the status of occupational stress and analyze its influencing factors among frontline employees working in a chemical fiber manufacturing enterprise, so as to provide insights into the development of occupational stress interventions. Methods : The frontline employees working in a chemical fiber manufacturing enterprise were selected as the study subjects using a cluster sampling method in October 2018. The status of occupational stress was investigated using the Chinese version of the effort-reward imbalance ( ERI ) questionnaire. The influencing factors for occupational stress were identified using a multivariable logistic regression model. Results : A total of 1 780 questionnaires were sent out, and 1 115 valid ones ( 62.64% ) were recovered. Among the 1 115 respondents, there were 427 men ( 38.30% ) and 688 women ( 61.70% ), and 71.22% were at ages of 21 to 39 years. There were 561 respondents with < 1 year of service ( 50.31% ), and the longest length of service was 11 years. In addition, there were 1 069 respondents ( 95.87% ) exposed to high noise, and 346 respondents ( 31.03% ) were diagnosed at a high occupational-stress state and 769 ( 68.97% ) at a low state. Multivariable logistic regression analysis identified 5 years or longer of service ( OR=1.540, 95%CI: 1.057-2.245 ) and exposure to high noise ( OR=1.917, 95%CI: 1.004-3.659 ) as risk factors for occupational stress among frontline employees in the chemical fiber manufacturing enterprise. Conclusions There are 31.03% of frontline employees at a high occupational-stress state in the chemical fiber manufacturing enterprise, and a high occupational-stress state is associated with exposure to high noise and 5 years or longer of service.

Objective:To systematically evaluate the effect of umbilical therapy in adult ulcerative colitis.Methods:The clinical randomized controlled trials (RCT) related to the effect of umbilical therapy in ulcerative colitis in the Chinese and English databases were systematically searched, and their citations were traced. The search time limit was from the establishment of each database to December 30, 2020. Two researchers screened and evaluated the articles according to the inclusion and exclusion criteria, and extracted article information and data. RevMan5.3 was used for meta-analysis.Results:A total of 13 Chinese articles were included, with 898 patients. The results of meta-analysis showed that there was no statistically significant difference in the general symptom relief rate [ RR=0.70, 95% CI (0.12, 4.19), P=0.70]and effective rate [ RR=0.93, 95% CI (0.54, 1.59), P=0.86]between conventional therapy and umbilical therapy alone. Umbilical therapy combined with conventional therapy can improve the effective rate of treatment [ RR=1.26, 95% CI (1.18, 1.35), P<0.000 01], general symptom relief rate [ RR=1.94, 95% CI (1.44, 2.61), P<0.000 1], abdominal pain relief rate [ RR=1.90, 95% CI (1.42, 2.54), P<0.000 1], diarrhea relief rate [ RR=1.32, 95% CI (1.07, 1.64), P=0.01], remission rate of pus and blood stool [ RR=1.22, 95% CI (1.03, 1.44), P=0.02]and reduced disease activity [ MD=-1.79, 95% CI (-3.37, -0.21), P=0.03]. In terms of adverse reactions, the difference between the two groups was not statistically significant [ RR=0.33, 95% CI (0.08, 0.80), P=0.13]. Conclusions:The efficacy of umbilical therapy alone is equivalent to that of conventional therapy, but umbilical therapy combined with conventional therapy is more effective in improving the treatment effective rate, general symptom relief rate and clinical symptoms. Due to the limitation of the number and quality of the included studies, long-term follow-up, large sample and rigorous RCT studies are needed to prove it.

Objective:To explore the chain mediating effect of intrusive thinking and psychological distress on the fear of disease progression and quality of life of kidney transplant recipients, with a view to providing scientific theoretical guidance for effective psychological interventions for kidney transplant recipients.Methods:This study is a cross-sectional study. Convenience sampling was used to select 312 kidney transplant recipients who were followed up in the Outpatient Clinic of the First Affiliated Hospital of University of Science and Technology of China from January to May 2019. Patients were investigated with the General Information Questionnaire, the Fear of Progression Questionnaire, the Impact of Events Scale-Revised Intrusion Subscale, Distress Thermometer and 12-Item Short-Form Health Survey Questionnaire. Mplus 8.3 was used to construct and verify multiple intermediary models.Results:A total of 296 kidney transplant recipients were included in this study. In quality of life, the mental health score was (49.58±8.97) , and the physical health score was (49.90±9.17) . Fear of disease progression, intrusive thinking and psychological distress were all negatively correlated with mental health and physical health of quality of life (the r values were -0.453 to -0.401, P<0.01) . The mediating effect of fear of disease progression on the quality of life was established. The total mediating effect value was -0.273, and the specific mediating effect of intrusive thinking accounted for 46.52%, and the specific mediating effect of psychological distress accounted for 41.76%. The chain mediating effect of intrusive thinking and psychological distress between fear of disease progression and quality of life accounted for 11.72%. Conclusions:The intrusive thinking and psychological distress of kidney transplant recipients are established as a chain mediation between the fear of disease progression and the quality of life. While paying attention to patients' fear of disease, clinical staff should pay attention to assessing patients' intrusive thinking and psychological distress, and take targeted measures to reduce the impact of fear of disease progression on the quality of life.

Objective:To explore the occupational stress status and influencing factors of workers in a textile factory in Zhejiang Provice.Methods:In October 2018, 505 workers from a textile factory in Zhejiang Province were selected as research objects by convenient sampling method. A total of 505 questionnaires were distributed, 495 of which were effective and the effective recovery rate was 98.0%. Job Content Questionnaire (JCQ) and Effort Reward Imbalance Questionnaire (REI) were used to investigate textile workers' occupational stress and analyze its influencing factors. The differences of the composition ratio of different groups were tested by χ 2 test. The influencing factors such as age, gender and occupation on occupational stress were analyzed by multivariate logistic regression. Results:ERI analysis results showed that the high and low occupational stress accounted for 30.1% and 69.9%, respectively. The differences of occupational stress among workers of different job types and working ages were statistically significant ( P<0.05) . The detection rates of high occupational stress of paper workers and spinners were 47.8% (11/23) and 44.8% (30/67) , respectively, higher than other jobs. The detection rate of high occupational stress for workers with more than 5 years of service was 46.4% (13/28) . The results of JCQ analysis showed that there was no statistical significance in the differences of daily working hours and length of service between different gender, education levels, types of work patterns, and occupational stress ( P>0.05) . Job types had significant effects on the occupational stress defined by ERI ( P<0.05) , the risk of occupational stress was 2.151 times than that of the coiler. Conclusion:There are significant differences in occupational stress risk among workers of different types of work in textile industry, so different measures should be taken to prevent and control occupational stress in different jobs.

Objective:To explore the occupational stress status and influencing factors of workers in a textile factory in Zhejiang Provice.Methods:In October 2018, 505 workers from a textile factory in Zhejiang Province were selected as research objects by convenient sampling method. A total of 505 questionnaires were distributed, 495 of which were effective and the effective recovery rate was 98.0%. Job Content Questionnaire (JCQ) and Effort Reward Imbalance Questionnaire (REI) were used to investigate textile workers' occupational stress and analyze its influencing factors. The differences of the composition ratio of different groups were tested by χ 2 test. The influencing factors such as age, gender and occupation on occupational stress were analyzed by multivariate logistic regression. Results:ERI analysis results showed that the high and low occupational stress accounted for 30.1% and 69.9%, respectively. The differences of occupational stress among workers of different job types and working ages were statistically significant ( P<0.05) . The detection rates of high occupational stress of paper workers and spinners were 47.8% (11/23) and 44.8% (30/67) , respectively, higher than other jobs. The detection rate of high occupational stress for workers with more than 5 years of service was 46.4% (13/28) . The results of JCQ analysis showed that there was no statistical significance in the differences of daily working hours and length of service between different gender, education levels, types of work patterns, and occupational stress ( P>0.05) . Job types had significant effects on the occupational stress defined by ERI ( P<0.05) , the risk of occupational stress was 2.151 times than that of the coiler. Conclusion:There are significant differences in occupational stress risk among workers of different types of work in textile industry, so different measures should be taken to prevent and control occupational stress in different jobs.

This study was carried out to investigate the pharmacokinetics/bioequivalence of levornidazole disodium phosphate by using stable isotope labeled drug, evaluated the pharmacokinetic profile and confirmed the prodrug characteristics of levornidazole disodium phosphate in monkey. Levornidazole (Drug A) and stable isotope ¹⁵N labeled levornidazole disodium phosphate (Drug B) were mixed with equal mole amount (experiment I); stable isotope ¹⁵N labeled levornidazole disodium phosphate (Drug B) and levornidazole disodium phosphate (Drug C) were mixed with equal mole amount, respectively. After giving the mixed drugs to the monkey, the concentration of ¹⁵N-levornidazole disodium phosphate, levornidazole disodium phosphate, ¹⁵N-levornidazole and levornidazole in plasma samples of pre-dosing and 24 h after administration were analyzed by a liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS) method. Pharmacokinetic calculations were performed through non-compartmental analysis using WinNonlin software. Two-sided 90% confidence intervals (CI) were used to evaluate the bioequivalence of two drugs. The results showed that levornidazole disodium phosphate was metabolized to levornidazole rapidly after administration, the body exposure were increased with the dosage. The method of bioequivalence used in this study was different from the traditional two periods, crossover design. By using the method of this study, the effects of administration period, intra-individual variability, and sequence of administration on bioequivalence were avoided. The results of this study had successfully supported the pharmacokinetic and bioequivalence study of this drug in human using the same approach.

Objectives To implement the guideline-based clinical practice program for identification and manage-ment of dysphagia in stroke patients,and to create a good evidence-based practice culture,and to improve the quality of clinical care. Methods In this study,we use the Iowa model of evidence-based practice as a guide, reference guide issued by RNAO to implement the corresponding implementation strategy tool,and gradually apply the program to the pilot ward. Results The implementation of the program had a positive impact on the patient level (quality of life,satisfaction and hospitalization),the nurse level(satisfaction and knowledge),and the level of eachau-ditcriteria. Conclusion It is possible to improve the clinical nursing quality by adapting the high quality guide-lines for the identification and management of dysphagia in foreign countries and this study can provide reference for the research of future guideline implementation.

OBJECTIVETo evaluate the quality of Flos Chrysanthemi Indici which produced in twenty-two different producing places.

METHODChlorogenic acid and caffeic acid were analyzed on a Shim-pack C8 colunm (4.6 mm x 250 mm, 5 microm) eluted with the mobile phase consisted of acetonitrile-0.5% phosphoric acid( 19:81). The detection wavelength was set at 326 nm. Linarin were eluted with the mobile phase consisted of methanol-water-acetic acid(26: 23: 1). The detection wavelength was set at 334 nm. The column temperature was 25 degrees C. The flow rate was 1.0 mL x min .

RESULTThe linear response ranged within 2.5-50 microg for chlorogenic acid (r = 0.998), 2.5-25 microg for caffeic acid (r = 0.998) and 4.97-41.47 microg for linarin (r = 0.999), respectively. Recoveries were 100.8% with RSD 2.1% for chlorogenic acid, 96.2% with RSD 2.3% for caffeic acid and 103.7% with RSD 1.8% for linarin.

CONCLUSIONThere was a significant difference in the content of chlorogenic acid, caffeic acid, linarin among the samples. The content of chlorogenic in the sample from Fengdou Chongqing city was the highest in those from other places. The content of caffeic acid in the all samples is very low. The content of linarin in the samples from Jiangsu province and Anhui province almost reached the national standard in pharmacopoeia.

Caffeic Acids ; analysis ; China ; Chlorogenic Acid ; analysis ; Chromatography, High Pressure Liquid ; Chrysanthemum ; chemistry ; Flowers ; chemistry ; Glycosides ; analysis ; Plant Extracts ; analysis ; Quality Control

OBJECTIVETo explore the character of inorganic elements in Flos Chrysanthemi indici and look for relationship between the element concentration and regions.

METHODThe contents of elements, including borum (B), sodium (Na), magnesium (Mg), phosphorus (P), potassium (K), calcium(Ca), manganese (Mn), iron (Fe), copper (Cu), zinc (Zn), strontium (Sr), cesium (Se), barium(Ba) and lead(Pb) in Chinese traditional herb Flos Chrysanthemi indici from different regions were determined by ICP-AES. The element distrubution diagram were plotted. The principal component analysis and correlation analysis of SPSS were applied for the study of characteristic elements.

RESULTSimilar curves of element concentration have been acquired. It is observed that the content of elements in the samples shows regional diversity. There are 15 correlative element pairs in correlation analysis. Four principal components which accounted for over 84.437% of the total variance were extracted from the original data. The first and second factors accounted for 60.090% of the total variance, which means that P, K, Ca, Mn, Fe, Cu, Sr, B, Na and Se may be the characteristic elements.

CONCLUSIONThe showed that element content in Flos Chrysanthemi Indici display special distributing diagram. Remarkable correlation is presented in some element pairs. The elements contents of Flos Chrysanthemi indici gained from Yunan, Hunan are higher than those from other regions.

China ; Chrysanthemum ; chemistry ; Drugs, Chinese Herbal ; analysis ; Flowers ; chemistry ; Principal Component Analysis ; Trace Elements ; analysis