Abacterial strain A25, isolated from activated sludge and identified as Bacillius megaterium, could produce flocculant, The optimum carbon and nitrogen sources are maltose and yeast extract, respectively. The optimum pH range is 7.0～10.0. The flocculant was synthesized during the cell growth. The flocculant mainly exists in the supermatant. The partial purified flocculant could be kept in 60C for 1 hour without losing activity.

The present paper consults the concept of clinical competence, cultivation actuality, examination and assessment system of master of nursing specialist (MNS) at home and aboard based on literature analysis.Currently there is neither unified concept of master nursing specialist clinical competence, nor a unique clinical ability training mode of MNS.This paper mainly expounds the differences of the nursing professional master degree graduate students clinical ability evaluation system at home and abroad in the assessment methods, assessment tools, assessment agencies and assessment index, pointing out that our country should make a unified concept of the clinical competence.We should develop a flexible, diverse clinical competency assessment method, establish specialized evaluation agencies which are independent of the government, and implement 3 level quality monitoring system-graduate school of the university, clinical college graduate school and nursing department of, to ensure the training quality.

Objective To investigate the health-related quality of life and its relative factors in children with leukemia during maintenance treatment period. Therefore, the basis for effective individualization intervention can be provided. Methods A total of 224 leukemia children in maintenance treatment were collected in Affiliated Children′s Hospital of Chongqing Medical University from October 2015 to January 2016 by convenience sampling methods, questionnaire was used to assess the physical status, emotional status, social status, school status of the children. Results Single factor and generalized linear regression analysis were used to conclude that patient′s age (F=5.841-36.343, all P<0.01), parenting pattern (F=4.006-4.288, all P<0.05), family economic status (F=3.277-15.865, P<0.05 or 0.01) and the caregivers′information mastery level household location (F=2.044-2.661, P<0.05 or 0.01) had significant influence on the quality of life of children with leukemia in maintenance treatment. Conclusions The health-related quality of life and its relative factors in children with leukemia during maintenance treatment period should be analysis comprehensively. At the same time, take intervention should be taken from physiology, psychology, society, and school, to improve the social adaptability of children with leukemia and help them return to society as soon as possible.

Objective To observe the clinical parameters, self-management, and compliance in peritoneal dialysis (PD) patients before and during Spring Festival, and to describe holiday syndrome in PD patients.Methods We prospectively observed PD patients with regular follow-up in our center before Chinese Spring Festival (January 8-February 7, 2016) and during Chinese Spring Festival (February 8-March 8, 2016).Demographic and clinical characteristics, self-management, and compliance with its influencing factors were collected by face-to-face method in outpatient care.Results Totally 130 PD patients were enrolled.The average age was (58.5±15.4) years, and women accounted for 53.1％.The primary diagnosis was diabetic kidney disease (32.3％), followed by primary glomerulonephritis (26.2％).Fourteen patients (10.8％) received automated peritoneal dialysis (APD), and most of the remaining patients chose continuous ambulatory peritoneal dialysis (CAPD,73.8％), with a median dialysis age of 34 months.During the 4-week followed-up, the appetite was stable, while the serum phosphate and pre-albumin increased [(1.5±0.4)mmol/L vs.(1.6±0.4)mmol/L, P=0.025;325.3 (272.2,355.1)mmol/L vs.326.0(284.2,376.5)mmol/L, P<0.01, respectively].No difference was observed in edema, dyspnea, and nighttime lying flat.However, the weight elevated significantly [(61.3±13.9)kg vs.(63.4±13.0)kg, P=0.002], with the median peritoneal ultrafiltration volume increased from 783.3 ml to 900.0 ml (P=0.005).During the holiday, the incidences of dialysis-related infections were unchanged, while the incidences of digestive system comorbidities increased significantly (5.4％ vs.13.8％, P=0.021).As for the compliance, 8 patients reduced their PD cycles during the holiday, which was more frequent than before holiday (P=0.018).One patient changed his PD pattern, and 6 patients did not follow the medication orders.Demographic characteristics such as gender, age, and marriage conditions were not associated with the compliance.Conclusions Holiday syndrome remarkably affects PD patient''s volume load, metabolism, and compliance.Poor self-management of PD patients during holidays needs further concern.

Objective To analyze the characteristics of lethal peritoneal dialysis related peritonitis and to define the risk factors.Methods All patients who developed PD related peritonitis between Jan.1999 and May 2015 in PUMCH were included.Clinical profiles were collected.Patients were divided into mortality group(n=16) and non-mortality group(n=182) according to whether peritonitis causing mortality.Baseline clinical profiles were compared between two groups.Cox regression analysis was used to define the risk factors for mortality.Results White blood cells [(10.2±6.3)×109/L vs (5.8±1.8)×109/L,P<0.05] increased,but serum albumin[(25.2±8.5)g/L vs (34.0±6.3)g/L,P<0.05] and potassium concentration [(3.5±0.9)mmol/L vs (4.5±1.0)mmol/L,P<0.05] decreased at the time of lethal peritonitis bacteria and fungus cultures were positive in half of the patients as bacteria (31.2%),fungus (12.5%)and mycobacterium tuberculosis (6.25%).Multiple cox regression analysis identified cardiovascular disease as the independent risk factor for peritonitis related mortality (HR 9.318,95% CI 1.875~46.305,P<0.01).Conclusions Peritonitis of patients with cardiovascular disease may cause death.

Objective To explore the effects of the community-based rehabilitation on schizophrenia. Methods 100 patients with schizophrenia from 4 communities were assigned to intervention group (n=50) and control group (n=50). The intervention group accepted comprehensive intervention for 6 months. All the patients were followed up for 12 months, and assessed with the Positive and Negative Symptoms Scale (PANSS), Personal and Social Function Scale (PSP), the General Quality of Life Inventory (GQOLI-74). Results 48 cases of the intervention group and 44 of the control group finished the study. The scores of negative symptoms and general spirit pathology were less in the intervention group than in the control group (P<0.01). The score of PSP was more in the intervention group than in the control group (P<0.01), as well as the total score and score of dimensions of physical function, mental health and social function (P<0.05). Conclusion Community-based rehabilitation can control the mental symptoms, and improve the social function and the quality of life of patients with schizophrenia.

Objective: To study the influence of community mental rehabilitation based on Deming Cycle(PDCA) management model on the quality of life of patients with chronic schizophrenia. Methods: From January 2016 to June 2017, 100 patients with chronic schizophrenia who agreed to community management in Wuxi were randomly divided into study group(n=50) and control group(n=50). Both two groups received traditional community mental health services, meanwhile, the study group was provided with community mental rehabilitation based on PDCA model.All the patients were followed up for 1 year.The quality of life scales(SQLS), social disability screening schedule(SDSS) and family care index(APGAR) were assessed before and after one-year intervention. Results: At the end of one year after intervention, the scores of total quality of life, psychosocial dimension, motive and energy dimension, symptom and side effects in the observation group were (41.27±10.54)points, (38.37±10.84)points, (35.43±7.46)points, (20.71±7.34)points, respectively, which were lower than those in the control group[(51.98±7.43)points, (48.73±8.72)points, (47.67±6.98)points, (29.79±8.64)points] and before intervention[(54.37±5.87)points, (49.78±4.73)points, (48.57±6.87)points, (33.17±10.42)points](t=5.87, 5.27, 8.47, 5.66, 7.68, 6.82, 9.16, 6.91, all P<0.05). At the end of one year after intervention, the social function score[(6.78±2.84)points] of the observation group was significantly lower than that of the control group[(8.83±2.73)points]and before intervention[(8.97±2.18)points](t=3.68, 4.33, all P<0.05), and the family social care index score[(8.75±2.04)points]was significantly higher than that of the control group[(7.04±2.36)points] and before intervention[(6.76±2.14)points](t=-3.88, -4.76, all P<0.05). There was a positive correlation between SDSS score and SQLS score(r=0.41, P<0.05). There was a negative correlation between SQLS score and SDSS score(r=-0.35, P<0.05). Conclusion The community mental rehabilitation strategy based on PDCA model can improve the social function and family social care, effectively improve the quality of life of schizophrenic patients, while positively promote the rehabilitation of patients.

Objective:The decision tree Chi-square automatic interactive detection (CHAID) algorithm and binary Logistic regression analysis were used to construct the risk prediction model of premature ovarian failure (POF) in patients with uterine fibroids complicated with hypertension after surgery, and the results of the risk prediction model were compared and analyzed.Methods:Patients with uterine fibroids complicated with hypertension admitted to Taizhou Hospital of Zhejiang Province from Jan. 2019 to Sep. 2022 were retrospectively analyzed as the research objects. CHAID algorithm and Logistic regression analysis were used to establish risk prediction models, respectively. The area under the curve (AUC) of receiver operating characteristic curve (ROC) was used to compare and evaluate the prediction effects of the two models.Results:A total of 860 patients were collected, including 56 patients with premature ovarian function failure after operation, and the incidence of premature ovarian function failure was 6.51%. CHAID method and Logistic regression analysis showed that uterine myoma surgery, hypertension, smoking or passive smoking, family history of premature ovarian failure, sleep status, physical exercise and history of induced curettage were important influencing factors of premature ovarian failure. The accuracy of risk prediction of decision tree model was 88.2%, and the fitting effect of the model was good. The Logistic regression model Hosmer-Leme-show goodness of fit test showed that the model fit was good. The AUC of Logistic regression model was 0.893 (95% CI: 0.862-0.899), and the AUC of decision tree model was 0.882 (95% CI: 0.856-0.899). The predictive value of the two models was moderate, and there was no significant difference between them ( Z=0.254, P>0.05) . Conclusions:The combination of decision tree and Logistic regression model can find the influencing factors of premature ovarian function failure in patients with uterine fibroids complicated with hypertension after operation from different levels, and the relationship between the factors can be more fully understood. The establishment of a risk model for premature ovarian function failure in patients with uterine fibroids complicated with hypertension after surgery can provide a reference for postoperative intervention in patients with uterine fibroids complicated with hypertension, and more effectively help patients actively prevent and slow down the occurrence and development of POF.

Objective: To analyze the clinical data of the elderly peritoneal dialysis (PD) patients in Peking Union Medical College Hospital (PUMCH), and to find the risk factors for the long-term survival. Methods: Baseline data and the outcome of maintenance PD patients from 1996-03 to 2015-09-30 were collected for a retrospective cohort study. Patients were divided into the non-elderly group (<65 years old), the 65-79 years old group and the ≥80 years old group, and were follow to 2016-09-30. The survival rate was calculated by Kaplan-Meier method and the risk factors of outcome were analyzed by the Cox's regression model. Results: Among 577 PD patients, about 243(42.1%) were elderly patients, including 207 patients aged between 65 and 79 years (35.9%) and 36 patients aged 80 or more (6.2%). The most common primary disease causing PD was diabetic nephropathy (DN) for both elderly and non-elderly patients. The 1-year, 3-year, 5-year survival rate of patients aged between 65 and 79 years were 87.0%, 61.9%, 32.4% respectively, and 72.5%, 48.5%, 27.3% for the ≥80 years old group. The dominating reasons of death were cardiovascular events and infection. There was no difference of technical survival rates among three groups, and the most common reason for technical failure was peritonitis. For elderly patients, diabetes (HR=2.193, 95% CI 1.445-3.328, P<0.001) and lower baseline serum albumin (HR=0.968, 95%CI 0.940-0.996, P=0.026) were independent risk factors for death. However, for non-elderly patients, diabetes (HR=3.746, 95%CI 2.149-6.529, P<0.001) was the only independent risk factor for death. Conclusions Cardiovascular diseases and infection are the main reasons for death among the elderly PD patients in PUMCH. Diabetes and lower baseline serum albumin may predict the mortality of elderly PD patients independently. Better management of nutrition might improve survival in elderly PD patients.

Radiomics is a non-invasive method to extract valuable features from computed tomography(CT)images to characterize the correlation between tumor phenotype and clinical treatment outcomes,which is of great significance in the evaluation of the efficacy of non-small cell lung cancer(NSCLC).This paper reviews the research methods of CT Radiomics in the evaluation of curative effect of NSCLC.Firstly,the research content of CT radiomics in NSCLC is summarized.Then,from the perspective of different treatment methods,such as namely radiotherapy and chemotherapy,targeted therapy and immunotherapy,the research methods of CT radiomics in the evaluation of NSCLC efficacy were summarized,and the CT radiomics was compared with other commonly used efficacy evaluation systems.Finally,the development trend and improvement of the application of CT radiomics in the evaluation of NSCLC curative effect were summarized and prospected.