Objective To evaluate the effectiveness of intervention for health risk factor in hospital employees. Methods This study was carried out among 339 employees of a hospital in Jinan, Shandong Province. Based on the results of Health Risk Appraisal for 14 health risk factors, we designed a 6-months intervention program for the most widely distributed and intervenable health risk factors; and then evaluated the changes of health risk factors after 6 months. Results After 6-month intervention the prevalence of 3 health risk factors decreased (P ＜ 0.05 ): physical inactivity decreased from 57.8% to 38.6%,hyperlipidemia from 9.4% to 5.3%, and unhealthy dietary from 28.9% to 14.8%. Compared with the baseline data, the average number of health risk factors were reduced from 3.10 to 2. 71 ( P ＜ 0. 01 ).Conclusion The intervention can reduce health risk factors effectively.

Objective To evaluate the postoperative related aesthetic parameters and satisfactory degree between CT 3D reconstruction augmentation rhinoplasty with silicone and augmentation rhinoplasty with silicone in adult Han women.Methods Totally 60 adult healthy Han women voluntarily subjected to augmentation rhinoplasty with silicone were randomly divided into groups A and B,30 people each group;Row CT 3D reconstruction augmentation rhinoplasty with silicone was performed in group A,and the augmentation rhinoplasty with silicone in group B;6 months after surgery related data measurement and questionnaire collected,we compared the objective and subjective indicators for the nasal root,dorsum and ministry,respectively.Results There was a difference between group A and group B in the nasorostral angle,the nasal facial angle,the asofrontal angle and the height of the nasal root (89.50±1.40)°,(28.85±2.20)°,(136.26±1.92)°,(6.45±0.27) mm in group A,and (85.40±3.70)°,(26.43±4.39)°,(138.88±4.78)°,(5.28±0.34) mm in group B (all P＜0.05).There was a difference between group A and group B in operation time (51.77 ± 5.35) min vs (29.83±5.76) min (P＜0.05).Conclusions Owing to its preoperative prosthesis design purpose and avoiding local swelling,CT 3D reconstruction augmentation rhinoplasty with silicone has better effects than that of augmentation rhinoplasty with silicone,especially on the nasal dorsum and the nasal root),which can obviously shorten the operation time,and therefore it is more suitable for the defects of the nasal root and dorsum.

Objective To explore the effects of gait training with an alternative gait orthosis (AGO) on the neurogenic bladders of patients with spinal cord injury (SCI). Method Twelve patients with complete SCI at the thoracic and lumbar level were trained for 8 weeks on motor and bladder function. After that, specific gait training with an AGO was given for another 8 weeks. American Spinal Injury Association ( ASIA ) sensation and motor function assessments were done before and after the gait training with the AGO, and bladder capacity, residual urine and urine flow rates were also assessed. Results Compared with pre-treatment there was no significant difference in average ASIA senzsation and motor scores after training, but the maximum rate of urine flow, average urine volume and single urination had significantly increased and residual urine volume had significantly decreased. Conclusions Therapeutic gait training with an AGO can improve bladder function after SCI.

Objective:To explore the efficacy and safety of intravesical electrical stimulation (IVES) combined with a training for bladder motor and sensory dysfunction in the treatment of neurogenic underactive bladder(UAB).Methods:A prospective, single-blind, randomized controlled trial was used to study neurogenic UAB patients admitted to the China Rehabilitation Research Center from October 2019 to May 2021. Inclusive criteria included age≥18 years old, the patients who have been diagnosed as neurogenic UAB and the course of disease being more than 3 months; patients who have been undergone intermittent catheterization to empty the bladder or patients indicated for intermittent catheterization (post-void residual urine accounts for more than 40% of the functional bladder volume), voluntary signing of written informed consent, able to communicate well with researchers and comply with the requirements of the whole trial, and the patient not undergoing any treatment other than oral medication before IVES. Exclusion criteria included patients with low bladder compliance by urodynamic examination(<20 ml/cmH 2O), patients with mechanical outflow obstruction, patients with complete spinal cord injury, the patients with symptomatic urinary tract infection which was not cured, patients with hydronephrosis or bladder-ureteral reflux, patients with renal insufficiency(serum creatinine greater than 1.5 times of the upper limit of normality), patients with malignant tumors of the bladder or prostate, overactive bladder, Alzheimer's disease, brain atrophy, acute cerebrovascular disease, or cognitive impairment, patients who were pregnant or planning to be pregnant, bladder mucosa injury, patients with pacemakers or defibrillators, those who participated in other clinical trials 3 months before the study, and other circumstances that the researcher consider it is not suitable to be involved in this study. The patients were randomly divided into experimental group and control group according to the ratio of 1∶1. The experimental group used conventional transurethral insertion of bipolar catheter electrodes for IVES combined with bladder motor and sensory dysfunction training, and the control group underwent IVES with open circuit combined with bladder motor and sensory dysfunction training. The stimulation parameters of the two groups were two-way square wave, 1-30 mA intensity, 10-20 Hz frequency, 200 μs pulse width, once a day, lasting 30 minutes for each treatment, and for continuous 20 working days. The post-void residual urine, voiding efficiency, 24-hour intermittent catheterization times, first sensation of bladder filling volume and American Urological Association Symptom Index Quality of Life(AUA-SI-QOL) scores were recorded before and at the end of treatment. The adverse events during the treatment were recorded. Results:Fifty-two patients were selected and 50 patients completed the trial, including 26 patients in the experimental group and 24 patients in the control group. Before treatment, there were no significant differences in gender[16(male)/10(female)vs.13(male)/11(female), P=0.598], age [(40.7±13.5)years vs.(38.5±12.3)years, P=0.543], course of disease[0.71(0.42, 1.63)years vs.0.79(0.42, 1.50)years, P=0.695], post-void residual urine[300(193, 400)ml vs.325(178, 380)ml, P=0.724], voiding efficiency[17%(0, 47.8)% vs.21%(0, 38.0)%, P=0.960], 24-hour intermittent catheterization times[4(2, 4)vs.3(2, 4), P=0.692], first sensation volume during bladder filling[(325.8±74.3)ml vs.(307.5±75.0)ml, P=0.391] or AUA-SI-QOL scores[5(4, 5)vs.4(4, 5), P=0.313] between the experimental group and the control group. At the end of treatment, the post-void residual urine, first sensation volume during bladder filling and AUA-SI-QOL scores of the experimental group were significantly lower than those of the control group [250(40, 350)ml vs.300(200, 390)ml, P=0.034; (276.5±68.8)ml vs.(315.4±67.3)ml, P=0.049; 4(2, 4)vs.4(3, 5), P=0.024], and the voiding efficiency was significantly higher than that of the control group[33%(14.5, 84.5)% vs.18%(0, 35.8)%, P=0.041], but there was no significant difference in the number of 24-hour intermittent catheterization between the two groups [3(1, 4)vs.3(2, 4), P=0.174]. In the control group, there were no significant changes in post-void residual urine, voiding efficiency, 24-hour intermittent catheterization times, first sensation volume during bladder filling and AUA-SI-QOL scores before and after treatment [325(178, 380)ml vs.300(200, 390)ml, P=0.832; 21%(0, 38.0)% vs.18%(0, 35.8)%, P=0.943; 3(2, 4)vs.3(2, 4), P=0.239; (307.5±75.0)ml vs.(315.4±67.3)ml, P=0.257; 4(4, 5)vs.4(3, 5), P=0.157]. In the experimental group, there were significant improvements in post-void residual urine, voiding efficiency, 24-hour intermittent catheterization times, first sensation volume during bladder filling and AUA-SI-QOL scores before and after treatment [300(193, 400)ml vs.250(40, 350)ml, P<0.001; 17%(0, 47.8)% vs.33%(14.5, 84.5)%, P<0.001; 4(2, 4)vs.3(1, 4), P=0.011; (325.8±74.3)ml vs.(276.5±68.8)ml, P<0.001; 5(4, 5)vs.4(2, 4), P<0.001]. During the treatment period, 1 case of abdominal discomfort occurred in the experimental group and 1 case of urethral discomfort in the control group. After adjusting the stimulation intensity and catheter position, the discomfort disappeared without other serious adverse events. Conclusions:IVES combined with bladder motor sensory dysfunction training can not only effectively improve the bladder emptying efficiency and bladder sensation in patients with neurogenic UAB, but also be safe and easy to operate.

Objective:To provide a promising and optimal laboratory susceptibility-testing method for the clinical usage of antibiotic (polymyxin), four susceptibility-testing methods were performed and the broth microdilution (BMD) was chosen as the gold standard.Methods:A total number of eighty-eight nonduplicate clinical Enterobacteriaceae specimes were collected from January to December of 2019 in the First Affiliated Hospital, Fujian Medical University. Among the clinical specimens, of which six strains were positive for mcr-1. The minimal inhibitory concentration (MIC) of polymyxin of the clinical specimens were examined by the following methods: (1) broth microdilution, (2) colistin broth disk elution, (3) Vitek-2?, (4)BD PhoenixTM,(5)commercial broth microdilution. With BMD as reference, essential agreement (EA), categorical agreement(CA), very major error(VME) and major error (ME) of polymyxins for different methods were analyzed. The Kappa-consistency testing, paired Chi-square testing and the Spearman-rank correlation testing were used to analyze the consistency between the four antimicrobial susceptibility testing methods and the gold standard.Results:Taking broth microdilution as reference, the EA of colistin broth disk elution, Vitek-2?, BD PhoenixTM, commercial broth microdilution were 94.32% (83/88), 92.05% (81/88), 90.90% (80/88), and 96.59%(85/88), respectively. The CA of all the four methods were 100% (88/88). No VME and ME were recorded for four methods. Moreover, the consistency between four susceptibility testing methods and the gold standard is acceptable (Kappa values=1, P<0.001, McNemar test P=1 and r>0.5, P<0.05). Conclusions:In the present work, four susceptibility testing methods all met the standards recommended jointly by the Clinical and Laboratory Standards Institute and European Committee on Antimicrobial Susceptibility Testing, of which the performance of the commercial broth microdilution and CBDE fared relatively well. Thus, these four methods could be routinely used in clinical microbiology laboratory of our hospital for colistin and polymyxin B susceptibility testing.

Denitrification is an indispensable part of most sewage treatment systems. The biological denitrification process has attracted much attention in the past decades due to the advantages such as cost-effectiveness, process simplicity, and absence of secondary pollution. This review summarized the advances on biological denitrification processes in recent years according to the different physiological characteristics and denitrification mechanisms of denitrification microorganisms. The pros and cons of different biological denitrification processes developed based on nitrifying bacteria, denitrifying bacteria, and anaerobic ammonia-oxidizing bacteria were compared with the aim to identify the best strategy for denitrification in a complex wastewater environment. The rapid development of synthetic biology provides possibilities to develop highly-efficient denitrifying strains based on mechanistic understandings. Combined with the applications of automatic simulation to obtain the optimal denitrification conditions, cost-effective and highly-efficient denitrification processed can be envisioned in the foreseeable future.
Aerobiosis ; Denitrification ; Nitrification ; Nitrogen ; Waste Water

Objective:To evaluate the predictive value of proximal ureteral diameter (D1)to distal ureteral diameter (D2)ratio (DDR) for impacted stones in the middle and upper ureter.Methods:The clinical data of 173 patients with middle and upper ureteral calculi admitted to the Third Hospital of Shanxi Medical University from January 2014 to November 2021 were retrospectively analyzed. There were 75 males and 98 females, with the median age of 56.0 (51.0, 62.0) years old and median body mass index of 26.1 (24.8, 27.2) kg/m 2. The imaging data of the patients were analyzed. The impacted stones were defined as the inability of the contrast agent to pass through the site of obstruction when intravenous urography or CT urography was performed, resulting in the inability of the ureter to visualize normally in parts below the site of obstruction. D1 was defined as the proximal ureteral diameter at the lower pole of the kidney on horizontal CT images. D2 was defined as the ureteral diameter 3 cm from the calculi. The stone diameter, stone CT value, D1, D2, and DDR were compared between impacted stone group and non-impacted stone group. Univariate logistic regression analysis was used to analyze the different indicators. Random number table was used to divide the training set and validation set according to the ratio of 7∶3. Through least absolute shrinkage and selection operator(LASSO) regression analysis, the independent influencing factors were obtained and the nomogram model was established (Model 1). Receiver operating characteristic (ROC) curve and area under the curve (AUC) were used to verify the predictive efficacy of the model, and the other three effective models (Model 2-4) were constructed by stepwise multivariate logistic regression. The deLong test was used to compare whether there was a significant difference in the AUC between Model 1 and the other three models, and the net benefit of patients was analyzed by clinical decision curve analysis(DCA). Results:In this study, 64 cases (37.0%) were impacted ureteral calculi and 109 cases (63.0%) were non-impacted ureteral calculi, and there were significant differences in diameter[7.8(6.2, 8.8)mm vs. 6.3(5.2, 8.1)mm] , CT value[878.5(763.8, 940.5)HU vs.764.0 (613.0, 854.0) HU], D1[11.1(8.9, 14.9) mm vs. 9.1(7.1, 10.8) mm], D2[4.1(3.1, 4.9) mm vs. 5.0(4.1, 5.9) mm] and DDR[3.1(2.3, 3.9) vs. 1.8(1.4, 2.4)] between the two groups( P < 0.05). The results of univariate logistic regression analysis showed that stone diameter ( OR = 1.333, P < 0.001), CT value ( OR = 1.002, P=0.002), D1 ( OR = 1.146, P<0.001), D2 ( OR = 0.652, P < 0.001) and DDR ( OR = 2.995, P<0.001) were the influencing factors of impacted stones. The training set and validation set included 122 cases and 51 cases, respectively, without significant differences in their image characteristics and outcomes ( P > 0.05). The results of LASSO regression analysis showed that λ corresponding to the simplest result in the optimal range was 0.0908, and three variables were included at this time, and the influencing factors of impacted stones were stone diameter (coefficient 0.0700, OR = 1.073), CT value (coefficient 0.0003, OR = 1.001) and DDR (coefficient 0.5960, OR = 1.815). Moreover, Model 1 was established. According to the model fitting results, ROC curves were plotted, and the AUC of Model 1 was 0.862, and the AUCs of Model 2-4 were 0.859, 0.762, and 0.793, respectively. After deLong test, there was no significant difference between Model 1 and Model 2 ( Z = 0.248, P = 0.804). The AUC of Model 1 was superior to that of Model 3 ( Z = 2.888, P = 0.004) and Model 4 ( Z = 2.321, P = 0.020). The DCA suggested that Model 1 could improve the net benefit rate by up to approximately 21% of patients. Conclusions:DDR is the influencing factor of impacted ureteral calculi, and the model constructed by DDR, stone CT value and stone diameter can effectively predict the probability of impacted ureteral calculi in the middle and upper ureter.

Objective:To learn about the changes of the condition of coal-burning-borne endemic arsenism, the use of improved stoves and the formation of health-related behaviors in Shaanxi Province, and evaluate the effect of prevention and control measures.Methods:From 2015 to 2020, according to the "Implementation Plan for Monitoring Coal-burning-borne Endemic Arsenism in Shaanxi Province", regular field surveys were carried out in 4 natural villages, 2 counties in Ankang City and Hanzhong City, Shaanxi Province, to learn about the basic prevention and control situation in the monitoring village. Using the simple random sampling method, 10 families in each village were selected to investigate the use of stoves and the formation of health-related behaviors, and 5 of these families were selected to collect coal samples for arsenic content determination in accordance with the "Determination of Arsenic in Coal" (GB/T 3058-2008). According to the "Diagnosis of Endemic Arsenicosis" (WS/T 211-2015), the condition of the people exposed to high arsenic coal in the monitoring village was investigated. Urine samples of 30 adult patients (half males and half females) with arsenic poisoning were collected, the content of arsenic in urine was determined by the "Urine-Determination of Arsenic-Silver Diethyldithiocarbamate-Triethanolamine-Spectrophotometric Method" (WS/T 28-1996).Results:A total of 240 households were monitored in the past 6 years, and the quality conformance and correct utilization rates of improved stoves in the households monitored in the disease areas remained at 100.00% in 2018 - 2020. The utilization rate of clean energy increased from 75.00% (30/40) in 2015 to 100.00% (40/40) in 2018 - 2020 (χ 2trend = 25.5, P < 0.001). The 73.75% (177/240) of households using a variety of clean energy. From 2018 to 2020, the correct drying, storage and pre-processing washing rates of corn and pepper continued to reach 100.00% (40/40). The arsenic content of coal ( n = 120) in the disease areas was (118.09 ± 57.91) mg/kg, ranging from 16.70 to 280.94 mg/kg. The detection rate of arsenic poisoning decreased from 6.34% (231/3 646) in 2015 to 2.90% (109/3 754) in 2020 (χ 2trend = 121.8, P < 0.001), and no skin cancer or Bowen's disease was detected. The geometric mean of arsenic content in urine ( n = 720) was 0.038 1 mg/L, ranging from 0.000 5 to 0.312 9 mg/L. Conclusions:The condition of coal-burning-borne endemic arsenism areas in Shaanxi Province has reached the national elimination standard. The quality and correct utilization rate of improved stoves and the rate of using clean energy have increased. The healthy-related behaviors the people in the endemic areas have been basically formed. The prevention and control work has achieved good results.

Background In the Global Burden of Disease research, it has been found that atmospheric fine particulate matter (PM_2.5) pollution significantly harms human health. Currently, there is limited research on polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) that exhibit high toxicity effects in PM_2.5 . Objective By studying the spatiotemporal distribution and variation characteristics of PCDD/Fs in PM_2.5 in Pudong area of Shanghai, to assess the associated population health risk. Methods This study set up 28 sampling points in Pudong area. One sample of PM_2.5 was collected during winter (February 2022) and summer (July 2022) at each site, with a sampling period lasting 24 h. The concentration of PM_2.5 was measured by membrane filter method, and the content of 17 kinds of 2,3,7,8-substituted chlorinated PCDD/Fs in the samples was analyzed using isotope dilution. Seasonal variations (winter and summer) in the concentrations of PM_2.5 and PCDD/Fs were evaluated, sources of PCDD/Fs pollution were tracing by principal component analysis, and health risks to the population from respiratory exposure to PCDD/Fs were estimated by VLIER-HUMAAN model. Results The PM_2.5 concentrations in the 28 samples ranged from 10 to 126 μg·m⁻³, while the concentrations of PCDD/Fs in PM_2.5 ranged from 58 to 2625 fg·m⁻³. The concentration of PM_2.5 during winter (11-126 μg·m⁻³) was higher than that during summer (10-60 μg·m⁻³). The concentration range of PCDD/Fs in winter was from 58 to 2625 fg·m⁻³, which corresponded to a range of toxic equivalent quantity (WHO-TEQ) concentration from 2.99 to 40.97 fg·m⁻³ when taking World Health Organization's toxic equivalency factor (WHO-TEQ); the concentration range of PCDD/Fs in summer was from 72 to 446 fg·m⁻³, which corresponded to a range of WHO-TEQ concentration from 2.66 to 16.61 fg·m⁻³. This range in summer was significantly lower than that observed in winter. The results of principal component analysis revealed that waste incineration was the primary source of PCDD/Fs in winter PM_2.5 in the area, whereas traffic emissions emerged as the main source in summer. The assessment of Pudong residents' respiratory exposure to PCDD/Fs in PM_2.5 showed significantly higher exposure of children in summer and winter than that of adults, indicating higher susceptibility of children to air pollutants. Both the hazard ratios (HR) for children and adults were below 1, while the cancer risks (CR) ranged from 8.41×10⁻⁸ to 2.35×10⁻⁶. Notably, during winter, the CR at 4 locations slightly exceeds 1×10⁻⁶, indicating a potential carcinogenic risk. Conclusion The overall pollution level of PCDD/Fs in PM_2.5 in Pudong area is relatively low, but it shows clear seasonal patterns. Waste incineration and traffic are the main sources of PCDD/Fs in PM_2.5 in the area. Although the cancer risk of exposure to PCDD/Fs in PM_2.5 for children or adults is relatively low, there is a certain risk at some locations in winter, necessitating additional monitoring and control.

Objective To assess the value of 18 F-FDG PET/CT, contrast-enhanced ultrasound, and their combination in the differential diagnosis of benign and malignant pancreatic lesions. Methods A retrospective analysis was performed on patients with pancreatic lesions who underwent 18 F-FDG PET/CT and contrast-enhanced ultrasound who were admitted to Tangshan Gongren Hospital from January 2015 to December 2020. The imaging results were confirmed by pathology examination to evaluate diagnostic sensitivity, specificity, accuracy, positive and negative predictive value. The t -test was used for comparison of continuous data between two groups, and the chi-square test was used for comparison of categorical data between groups. Results There were 83 malignant lesions and 25 benign lesions in 108 patients. The sensitivity, specificity, accuracy, positive and negative predictive value were 86.75%, 80.00%, 85.19%, 93.51% and 64.52% for 18 F-FDG PET/CT; and 69.88%, 76.00%, 71.30%, 90.63% and 43.18% for contrast-enhanced ultrasound, respectively. The two methods differed significantly in sensitivity and accuracy (all P < 0.05), but not in specificity, negative and positive predictive value (all P > 0.05). When combined with the contrast-enhanced ultrasound, 18 F-FDG PET/CT had an increased sensitivity, specificity, accuracy, positive and negative predictive value of 90.36%, 84.00%, 88.89%, 94.94% and 72.41%, respectively, though this was not statistically significant due to the increased signal of blood supply in the lesions. Conclusion 18 F-FDG PET/CT has a better performance than contrast-enhanced ultrasound in the differential diagnosis of benign and malignant pancreatic lesions, and their combination can improve the diagnostic value.