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Objective To analyze the nucleic acid testing(NAT) results of voluntary blood donors in Hainan and evaluate the residual risk in the window period of NAT for hepatitis B virus (HBV), hepatitis C virus (HCV) and human immunodeficiency virus (HIV). Methods A retrospective analysis on the NAT results of voluntary blood donors at our center from January 2012 to December 2022 was conducted. The new infection rate-window period residual risk model was used to assess the residual risk of HBV, HCV and HIV among blood donors. Results From January 2012 to December 2022, among the blood donated by voluntary blood donors in Hainan, 45.02% (522 684/1 161 042) were collected from first-time donors, 54.98% (638 358/1 161 042) were from repeat donors (including regular donors), and 30.48% (354 227/1 162 042) were from regular donors. The total reactive rate of NAT was 0.19% (2 151/1 161 042). After NAT, the residual risk in the window period of HBV, HCV and HIV was 62.54 per million, 0.431 per million and 0.791 per million, respectively. Conclusion The implementation of NAT among voluntary blood donors in Hainan significantly reduces the residual risk of HCV, and the residual risk of HBV, HCV and HIV transmission in the window period is at a relatively low level.

Objective To improve the application effect of nursing consultation in special outpatient service, so as to further improve the patient revisits rate, appointment rate and satisfaction degree. Methods From March to August 2021, hospital had set up nursing consultation in special outpatient services. Indicators of patient revisits and appointment were monitored before and after the implementation of nursing consultation, and the basic information of patients one week before and after the implementation were retrospectively analyzed. Results After the implementation of nursing consultation, the number of patient revisits, appointments and satisfaction rate were 57. 07 %, 70. 57 % and 100 % respectively, which were significantly higher than those before the implementation of nursing consultation(P＜0. 01). The time of consultation and guidance was significantly shortened (P＜0. 01). After the implementation of nursing consultation, the number of patients who visited to various departments, with different age groups and different educational levels were increased. Conclusion Setting up nursing consultation in special outpatient service can improve the quality of nursing, increase the number of appointments and follow-up visits and helps to improve the disease awareness of patients with different ages and different educational levels. (目的 提高护理咨询在特需门诊服务中的应用效果, 从而进一步提高患者复诊量、预约量及满意度。方法 医院2021年3月—8月在特需门诊服务中设置护理咨询, 对实施护理咨询前后工作指标情况进行总结, 并对实施前后1周患者基本信息情况进行统计分析。结果 实施护理咨询后就诊量、预约量、满意度分别57. 07%、70. 57%和100. 00%, 与未增设护理咨询前相比提高(P＜0. 01), 咨询指导时间明显缩短(P＜0. 01), 就诊效率提升, 并且实施护理咨询后各科室、不同年龄段及不同文化程度人群就诊量均有增加。结论 在特需门诊服务中设置护理咨询, 能够改善门诊护理服务质量, 可提升预约量与复诊量, 对提升不同年龄段及不同文化程度患者对疾病的了解程度具有积极意义。)

The development process of coal spontaneous combustion in the actual site is very complex, and the spontaneous combustion process is affected by many factors. One of the key points is the temperature change of fire source. In the actual working conditions, the location of fire source is often hidden and difficult to find, making it difficult to track and determine the direction and region of temperature change. Therefore, in the experimental environment of room temperature and room pressure, the temperature of coal spontaneous combustion is monitored, and the temperature change law under the inclined placement mode is analyzed to determine the high temperature area and its spread fuzzy path, and further analyze the influence of fire air pressure on the temperature change in the high temperature area. The study shows that the spread of high temperature area is nonlinear, mainly along the central and southeast direction of the furnace body. In the early stage of the experiment, the influence of temperature on the fire heating air pressure occupies the main position, while the elevation difference plays the leading role in the size of the fire heating air pressure. The temperature change of the shallow coal sample is mainly affected by thermal conduction. The temperature change of the upper coal sample is not only affected by thermal conduction, but also affected by the cracks produced by combustion, and the lower coal sample is also affected by fire air pressure, resulting in the gradual decrease of temperature with the deepening of the number of layers.

ObjectiveTo study the current situation of chronic diseases among island residents who have drunken desalinated water for a long time， and to reveal the relationship between drinking desalinated water and water from other sources and the prevalence of chronic diseases among the population.MethodsAccording to the different drinking water sources of island residents， the research subjects were divided into seawater desalination group （residents of Gouqi Township， Shengsi County）， mixed water source group （residents of Shengshan Town， Shengsi County） and freshwater group （residents of Huanglong Township， Shengsi County）. Through the chronic disease network report and resident health file system， the current situation of chronic diseases in different water groups was investigated and analyzed.ResultsThere were significant differences in the prevalence of malignant tumor among drinking water sources （χ2=23.867， Pdesalination group >fresh water group. There were significant differences in the prevalence of coronary heart disease （χ2=194.883， Pdesalination group >fresh water group. There were significant differences in the prevalence of stroke （χ2=35.637， P mixed water group > desalination group. There was no significant difference in the prevalence of diabetes mellitus （χ2=2.808， P=0.246）， but there was significant difference in the age of onset of diabetes mellitus （χ2=7.368， P=0.001）， and significant difference in the prevalence of diabetes mellitus in the age group ≥55 （χ2=17.144， P desalination group > mixed water source group. There was no significant difference in the prevalence of hypertension （χ2=3.962， P=0.138）， but there was significant difference in the prevalence of hypertension in the age group ≥55 （χ2=20.734， P desalination group > mixed water source group.ConclusionLong-term consumption of desalinated water by residents is correlated with malignant tumors， coronary heart disease and stroke， and has no correlation with diabetes and hypertension.

Objective To investigate the nursing needs of patients in a Traditional Chinese Medicine (TCM) Famous Doctor clinic, analyze the existing problems, and take improvement measures to improve the quality of outpatient nursing service. Methods According to the characteristics and specific situation of the TCM Famous-Doctor clinic, the self-made questionnaire was distributed and collected on site. The respondents filled it in by anonymous. The reasons why the patients chose the TCM Famous Doctor clinic were analyzed from seven aspects to investigate and analyze the satisfaction of nursing services currently provided, such as treatment environment, diagnosis process, accurate triage, enthusiastic service, initiative service, communication ability professional knowledge. Results The main approaches of making and appointment were “114 online platform” and “Wechat accounts platform”, accounting for 35. 50% and 28. 00% respectively. There were134(67. 00%)patients who considered the high reputation of famous doctors as the main reason of attendance of Famous Doctor clinic. The score of evaluation on doctor-visiting environment was (4. 51±0. 60), higher than (4. 17±0. 61)of doctor-visiting service and (3. 84±1. 04)of doctor-visiting process, and issue about making an appointment in the doctor-visiting process received the lowest satisfaction. Conclusion In view of the existing problems, targeted countermeasures were formulated to improve the comprehensive quality of nurses, assist patients in registration and payment, and optimize the drug taking process. (目的 对中医名医堂门诊患者的护理需求进行调查, 分析存在的问题并提出改进措施, 提高中医门诊护理服务质量。方法 结合医院中医名医堂特点及具体情况, 自行设计调查问卷, 研究人员现场发放调查问卷, 现场回收, 被调查人员采取无记名方式填写, 分析就诊患者选择中医名医堂的原因, 从就诊环境、就诊流程、分诊准确、服务热情、服务主动、沟通能力、专业知识等7个方面对目前提供的护理服务满意度进行调查分析。结果 挂号方式以“114平台”挂号和“医院公众号”挂号为主, 分别占35. 50%和28. 00%。134(67. 00%)患者认为“知名专家的名声”是选择在名医堂就诊的主要原因。“就诊环境”得分(4. 51±0. 60)分, 高于“服务水平”的(4. 17±0. 61)分和“就诊流程”的(3. 84±1. 04)分。“就诊流程”中“挂号过程”满意度最低。结论 针对存在的问题制定了提高护理人员综合素质, 协助患者挂号、缴费, 优化取药流程护理服务等有针对性的对策。)

Despite its rarity, insulinoma is the most common type of pancreatic endocrine neoplasm, with an occurrence of 1 to 5 per million per year in the population. Surgical resection or enucleation is the first line of curative treatment choice for insulinoma. Eight patients with symptomatic insulinomas treated by radiofrequency ablation have been described since 2009. In the past two years, we treated two patients with symptomatic insulinomas (one in the pancreatic tail and the other in the pancreatic neck) successfully using laparoscopic radiofrequency ablation. Both patients achieved complete elimination without any significant complications. Our study suggests laparoscopic radiofrequency ablation could be developed as a safe and effective alternative treatment to surgery for the patients with insulinomas who refuse or are not eligible for surgery.

The Carboniferous period was a unique period for reef developments during the Late Paleozoic; however, in past years, studies dealing with the Carboniferous reefs in China were very rare. In recent years, the Carboniferous reefs were studied in detail and diverse types of reefs have been discovered in different areas of China. In these areas, the Mississippian reefs were primarily built of bryozoans and rugose corals, which were associated with various kinds of calcareous algae. During the Pennsylvanian, in South China, the reef builders were composed of the rugose coral Fomichevella and phylloid algae, whereas in North China, the reef builders were composed of Chaetetes, bryozoans and corals. There are two main reef-building communities within Carboniferous reefs in China; an algal reef-building community and a reef-building community dominated by colonial coral. No evolutionary relationships between these two types of communities can be detected, thus indicating that two different linerages of reef-building communities evolved during the Carboniferous; the former community consists of cyanobacteria, bacteria and calcareous algae, while the latter one consists of various skeletal metazoan organisms. Through careful study of the developments of Chinese Carboniferous reefs, the evidence indicates that various communities of organisms played important reef-building functions during this period. The occurrence of these metazoan framework reefs also indicates that, during the Carboniferous, most areas in China would have been dominated by the environments with a tropical or subtropical climate.

The Fe-Co-Ce composite catalysts were prepared by co-precipitation method, and the effect of calcination temperature and calcination time on the performances of the Fe-Co-Ce composite catalysts were investigated. The results indicated that the optimum calcination temperature and calcination time of the Fe-Co-Ce composite catalysts were 450 °C and 7 h, respectively. Using the catalysts which prepared under the optimum calcination conditions catalytic wet oxidation of methyl orange simulated wastewater, after 90 min, the COD, COD removal rate, absorbance, decolorization rate and pH of the methyl orange simulated wastewater were 737.7, 70.5%, 0.348, 95.3%, and 5.31, respectively. According to the analyses of the SEM, FTIR, and TG-DTA curves, the components of the catalysts which prepared under the optimum calcination conditions distributed evenly, and the chemical compositions of the catalysts including C-O, -OH, and H-O-H, showing a good thermal stability.

The effects of the composite coagulants on coagulation sedimentation for the preserved wastewater was investigated by changing the composite coagulant dosages, and the coagulant was composed of polymeric ferric sulfate (PFS), polyaluminium chloride (PAC), and polyaluminum ferric silicate (PAFSC), while the effect of the tertiary treatment process on the preserved wastewater was tested, which was exceeded the standard seriously. The results showed that 400 mg/L was the optimum composite coagulant dosage. The removal rates of salt and sugar were as high as 99.1% and 99.5% respectively, and the removal rates of CODCr and SS were 99.3% and 96.0%, respectively after the preserved wastewater was treated by the tertiary treatment technology, which both reached the primary standard of “The Integrated Wastewater Discharge Standard” (GB8978-1996).

The preserved wastewater was treated by the upflow anaerobic sludge blanket (UASB) reactor, the effects of the anaerobic time on COD, turbidity, pH, conductivity, SS, absorbance, and decolorization rate of the preserved wastewater were investigated. The results showed that with the increase of the anaerobic time, the treatment effect of the UASB reactor on the preserved wastewater was improved. Under the optimum anaerobic time condition, the COD removal rate, turbidity removal rate, pH, conductivity, SS removal rate, absorbance, and decoloration rate of the wastewater were 49.6%, 38.5%, 5.68, 0.518×104, 24%, 0.598, and 32.4%, respectively. Therefore, the UASB reactor can be used as a pretreatment for the preserved wastewater, in order to reduce the difficulty of subsequent aerobic treatment.