20t转护水冷炉口的改造

炼钢厂在转炉水冷炉口改造中，增加了隔板，提高了冷却效果，延长了使用寿命。

医院-社区-家庭分级转介照护模式应用于急性冠状动脉综合征患者的效果评价

目的:评价医院-社区-家庭分级转介照护模式对不同风险分层急性冠状动脉综合征(Acute Coronary Syndrome,ACS)患者出院干预的应用效果。方法:使用全球急性冠状动脉事件注册危险评分(Global Registry of Acute Coronary Events,GRACE)工具对ACS进行病情风险分层,应用医院-社区-家庭分级转介照护模式对50名不同风险分层的ACS患者进行延续性心脏康复管理干预,在出院前、出院后3个月、出院后6个月及出院后1年时对患者实验室指标、心功能及自我效能感进行评估。结果:患者低密度脂蛋白、空腹血糖及自我效能感随着出院干预时间的延长均有改善,差异有统计学意义(P<0.05);心功能指标变化不明显,差异无统计学意义(P>0.05)。结论:基于GRACE风险分层的医院-社区-家庭分级转介照护模式可有效改善ACS患者临床预后,提升患者自我效能感。

专转本护生学习适应性与应对方式的关系研究

目的调查专转本护生学习适应性水平,并探讨与应对方式的相关性,为提高其学习适应性提供相关依据。方法采用一般资料调查表、大学生学习适应性量表、简易应对方式量表对481名护生进行调查。结果专转本护生积极应对方式与学习适应性呈正相关关系,消极应对方式与学习适应性呈负相关关系。多元回归分析结果显示,积极应对方式通过学习动机、学习能力正向影响学习适应性,消极应对方式通过学习动机、学习能力、学习态度、环境因素负向影响学习适应性。结论专转本护生学习适应性处于中等偏下水平,与应对方式密切相关,采用积极应对方式可以提高学习适应性。

医联体模式下分级转介照护在急性冠脉综合征出院病人中的应用研究

目的:探讨医联体模式下急性冠脉综合征病人分级转介照护的应用效果。方法:选择2018年2月—2019年8月我院收治的急性冠脉综合征病人96例,按入院顺序号分为观察组和对照组,各48例。对照组出院后予以常规随访和照护,观察组基于医联体模式予以分级转介照护。两组均随访12个月。比较两组出院时、出院6个月、出院12个月一般自我效能感、左心室射血分数、6 min步行距离、低密度脂蛋白胆固醇、空腹血糖及病人出院1年内不良心血管事件的发生率、冠状动脉再狭窄率和再住院率。结果:观察组出院6个月和12个月自我效能感评分、左心室射血分数、6 min步行距离高于同时期对照组(P<0.05),低密度脂蛋白胆固醇、空腹血糖低于同期对照组(P<0.05),观察组出院1年内不良心血管事件发生率、冠状动脉再狭窄率和再住院率低于对照组,差异均有统计学意义(P<0.05)。结论:基于医联体模式为急性冠脉综合征病人提供分级转介照护,能更好地提高病人自我效能感,改善心功能,降低不良事件发生率和再住院率。

医院-社区-家庭分级转介照护模式在急性冠状动脉综合征患者中的应用

目的 探讨医院-社区-家庭分级转介照护模式在不同风险分层的急性冠状动脉综合征(ACS)患者中的应用效果,为其他急重症慢病康复管理提供参考。方法 利用全球急性冠状动脉事件注册危险(GRACE)评分工具对ACS患者病情予以风险分层,针对60位风险分层各异的ACS患者采用医院-社区-家庭分级转介照护模式开展延续性心脏康复管理干预。评估患者出院时及出院后不同时间点的心功能、实验室指标与自我效能感。结果患者在出院时的自我效能感量表(GSES)得分为(24.11±4.67)分、出院半年为(27.07±3.67)分、出院1年为(30.43±4.06)分,在出院半年及出院1年时,患者GSES得分均明显高于出院时,且患者的GSES得分随着随访时间的推移而不断增加(均P<0.05)。不同时间段患者的空腹血糖及低密度脂蛋白水平差异具有统计学意义(均P<0.05),随着时间推移,患者在出院半年和出院1年时的低密度脂蛋白水平明显低于出院时(均P<0.05);患者在出院1季度、出院半年和出院1年时的空腹血糖水平均低于出院时(均P<0.05)。结论 对不同风险分层的ACS患者采用GRACE风险分层的医院-社区-家庭分级转介照护模式能明显改善患者临床预后,提高其自我效能感。

复合式围护结构中搅拌桩土压力分担的计算

本论文结合工程实例 ,采用有限元程序分析了开挖过程中 ,灌注桩—搅拌桩复合式围护结构中搅拌桩的土压力分担情况。并通过土参数的改变 ,讨论了影响搅拌桩土压力分担的因素。对灌注桩—搅拌桩这种复合式围护结构的机理进行了进一步研究。

成层土中围护结构所受水土压力的计算

Ｗａｔｅｒａｎｄｅａｒｔｈｐｒｅｓｓｕｒｅｓａｃｔｉｎｇｏｎｒｅｔａｉｎｉｎｇｓｔｒｕｃｔｕｒｅｉｎｌａｙｅｒｅｄｓｏｉｌ作者简介章胜南，男，１９６４年生，１９８６年毕业于浙江大学土木系，硕士学位，高级工程师。主要从事大、中型火力发电厂中岩土工程的勘...

SMW围护桩工法简介及经济分析

1 SMW围护桩工法简介1.1 概述 水泥土搅拌桩作为地基处理和防渗帷幕已被广泛用于地下工程,而型钢水泥土搅拌复合桩——SMW围护桩作为基坑围护结构,在1976年由日本竹中土木株式会社与成幸工业株式会社开发并运用。20多年来,SMW围护桩成为日本国内基坑围护的主要方法,约占地下围护结构的80％。从1994年开始,上海隧道工程股份有限公司对SMW围护桩工法开展系统研究,并在上海地区逐步推广使用。SMW围护桩工法主要在静安寺下沉式广场、国际会议中心、地铁2号线陆家嘴车站出入口及地铁2号线龙东路延伸段等基坑围护工程应用。

Effects of two kinds of transgenic poplar on protective enzymes system in the midgut of larvae of American white moth

The leaves of Bt (Bacillus thuringiensis) transgenic poplar (Populus nigra L.) and CpTI (Cowpea trypsin inhibitor) transgenic poplar ((P. tomentosa×P. bolleana)×P. Tomentosa) were taken to feed the 4th-5th-instar larvae of American white moth (Hyphantria cunea (Drury)) for determination of the activities of the protective enzyme system inside larvae’s body. The physiological and biochemical effects of the transgenic poplars on the larvae were studied. The results showed that the two kinds of transgenic poplars had similar effects on the protective enzyme system in the midgut of larvae. The activities of superoxide dismutase, catalase, and peroxidase in midgut of the larvae increased gradually, reached the highest value at a certain time, and then decreased suddenly. For the larvae that were fed with the leaves of Bt transgenic poplar, the peak value of superoxide dismutase and catalase presented at the time of 24-h feeding, while the peak of peroxidase took place at the time of 12-h feeding. The activities of these protective enzymes for the larvae that were fed with leaves of CpTI transgenic poplar peaked 12 h later than that of those fed with leaves of Bt transgenic poplar. The comparison of activities of the protective enzymes was also carried out between the larvae with different levels of intoxication. It was found that the activities of protective enzyme of the seriously intoxicant larvae were higher than that of the lightly intoxicant larvae. This difference was more obvious in the group treated with CpTI transgenic poplar.

Preparation of Purified and Inactivated HP-PRRS Vaccine

[Objective] The aim of this study was to improve the purification and protective potency of HP-PRRS inactivated vaccine. [Method] HP-PRRS virus that had been multiplied inside Marc-145 cells was collected and concentrated 50 times and then inactivated. Complete virions were separated and collected by chromatography with Sepharose 4 Fast Flow. Oil adjuvant was added to prepare purified inactivated vaccine. [Result] Viral protein was separated from other proteins by purification and the viral protein contents ranged from 76.7% to 82.4%, and 96% of the expected serum proteins were removed. Protective potency of purified vaccine was above 4/5 and positive conversion rate of antibody was over 86%, both higher than that of unpurified vaccine. The differences were significant. [Conclusion] The experiment il-lustrated that the immune efficacy of vaccine can be enhanced through concentrat- ing and purifying, while the non-viral protein can be removed, so that allergic reaction and stress response cadsed by vaccine inoculation can be avoided.

Prevention of de novo HBV infection by the presence of anti-HBs in transplanted patients receiving core antibody-positive livers

AIM： To analyze whether the presence of anti-HBs in liver transplant recipients is effective in preventing HBV infection. METHODS： Twenty-three patients receiving anti-HBc positive liver were studied. Nine recipients were anti-HBc positive as a result of previous HBV infection. Of them, one also received HBV vaccine during the pre-liver transplantation period. Fourteen recipients were anti-HBs positive due to HBV vaccine administered during the pretransplant period. Liver biopsy was obtained in 10/14 anti-HBc negative/anti-HBs positive recipients and in 4/9 anti-HBc positive recipients. RESULTS： After a mean foUow-up period of 46 months, 1 recipient with protective serum anti-HBs levels developed de novo HBV infection as a consequence of immune escape HBV mutants. Among the 14 vaccinated anti-HBc negative/anti-HBs positive recipients, 1/10 patients with available liver biopsy （10%） had liver HBV-DNA at 13 mo post-liver transplantation without serum viral markers and did not develop de novo HBV infection.The vaccinated anti-HBc positive recipient without HBV vaccine response was HBV-DNA positive in serum and liver, viral DNA was continuously negative in the following tests, so a spontaneous seroconversion was diagnosed. CONCLUSION： The presence of anti-HBs as a result of HBV vaccine or past HBV infection seems to be effective at protecting patients receiving livers from anti-HBc positive donors. However, the emergence of immune escape HBV mutants, which can evade the anti-HBs protection, should be considered as a risk of HBV infection.

Enhanced corrosion performance of magnesium phosphate conversion coating on AZ31 magnesium alloy

Magnesium phosphate conversion coating(MPCC)was fabricated on AZ31magnesium alloy for corrosion protection by immersion treatment in a simple MPCC solution containing Mg2+and3PO4?ions.The MPCC on AZ31Mg alloy showed micro-cracks structure and a uniform thickness with the thickness of about2.5μm after20min of phosphating treatment.The composition analyzed by energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy revealed that the coating consisted of magnesium phosphate and magnesium hydroxide/oxide compounds.The MPCC showed a significant protective effect on AZ31Mg alloy.The corrosion current of MPCC was reduced to about3%of that of the uncoated surface and the time for the deterioration process during immersion in0.5mol/L NaCl solution improved from about10min to about24h.

A model to facilitate transformative learning in nursing education

Objective:Transformative learning is a learner-centered process of learning.Learners are actively engaged through critical reflection and discourse to question assumptions and expectations.The purpose of this article is to describe a model to facilitate transformative learning in nursing education.Methods:A qualitative,exploratory,descriptive and contextual design for theory generation was selected in this study to describe a model to facilitate transformative learning in nursing education.Concept analysis of transformative learning was done in the first stage of the main study using Walker and Avant's eight step approach to clarify the conceptual identification and meaning.The results of concept analysis guided data collection in the second stage.Eleven individual agenda semi-structured interviews were conducted with nurse educators to explore and describe their perceptions regarding how transformative learning can be facilitated in nursing education.Matrix building approach was used to analyse the collected data.The third stage constituted the conceptualisation of findings from the second stage using relevant literature within the elements of practice theory.The fourth stage focused on the description and evaluation of a model to facilitate transformative learning in nursing education.Findings:Four themes and nine sub-themes emerged and were conceptualised within the six elements of practice theory namely the context,agent,recipient,dynamic,process and procedure and outcome.Conclusion:The relation statements provided the basis for model description.Reliable method was used to describe and evaluate the model.The refinement of the model by experts in model development andqualitative research was made.

Corrosion resistance of cerium conversion film electrodeposited on Mg-Gd-Y-Zr magnesium alloy

The cerium conversion film was applied to improving the corrosion resistance of Mg-Gd-Y-Zr magnesium alloy. The film was electrodeposited on the surface of the Mg-RE alloy in cerium nitrate solution. The compositions and morphologies were analyzed by X-ray diffraction(XRD), scanning election microscopy (SEM). The corrosion behaviors of the film were investigated electrochemical impedance spectroscopy (EIS), potentiodynamic polarization tests and immersion tests. The results show that the optimum parameters for electrochemical deposition are as follows: pH 10.0, time 30 min, 50 mmol/L Na2CO3 and temperature 25 ℃ by the designed experiments according to the orthogonal table L(9, 34). The corrosion protection efficiency is dependent on the deposition parameters. The cerium conversion film shows better corrosion protection behavior than chromate conversion film on Mg-Gd-Y-Zr magnesium alloy.

Study on Industrial Application of Hydrogen Sulfide Removal by Wet Oxidation Method with High Gravity Technology

The removal of hydrogen sulfide from gas plays an important role in rational utilization of resources and environ- mental protection. In this paper, the process of hydrogen sulfide removal by wet oxidation method in a rotating packed bed was investigated in a scale for treating 10 000 Nm3/h of gas. On the basis of studying the influence of the species and con- centration of alkali source, the liquid/gas volume ratio, the high gravity factor, and the hydrogen sulfide content in feed gas on the desulfurization effect, the suitable technological conditions were obtained. The hydrogen sulfide removal efficiency could reach 98.0% under these conditions. The results of continuous operation of process facilities showed that the high gravity method has many merits including higher desulfurization rate, good stability in operation, lower liquid/gas volume ratio, greater operation elasticity, and apparent energy saving effects.

Immunogenicity and protective efficacy of Vibrio harveyi pcFlaA DNA vaccine in Epinephelus awoara

The FlaA gene from Vibrio harveyi marker, was cloned into the eukaryotic expression with a short nucleotide sequence encoding the Flag vector pcDNA3.1（＋） （designated as pcFlaA）. Ninety grouper （Epinephelus awoara） were separated into three equal size groups. An experimental group was immunized with pcFlaA, Control I group was immunized with the vector pcDNA3.1（＋）, and Control 1I group was immunized with PBS. The expression of pcFlaA mRNA and protein was examined using reverse transcription-polymerase chain reaction （RT-PCR） and immunohistochemistry. We also evaluated the immunogenicity and protective efficacy of pcFlaA against V. harveyi by measuring the lymphocyte proliferation response and serum levels of specific antibody and conducting a bacterial challenge test. We successfully transfected the fish muscle with pcFlaA. The pcFlaA mRNA and protein was expressed in the muscle cells for up to one month following injection. The proliferation response of lymphocytes in fish immunized with pcFlaA was significantly higher than in control group II. Furthermore, the immunized fish generated specific antibody. The vaccination also resulted in significantly higher survival during the bacterial challenge test.

Energy conservation research of dehumidification system for main cable anticorrosion of suspension bridge

The necessity of the main cable anticorrosion for suspension bridge is described, and operating principles and composition of main cable dehumidification system are analyzed. An idea using the waste heat of high temperature outlet air of dehumidification system to heat up regeneration air of rotary-type dehumidifier is put forward in this paper. The concrete scheme is to install a heat exchanger on air-out pipeline of roots blower and air-in pipeline of regeneration electric heater of rotary dehumidifier. Air preheated by the heat exchanger enters regeneration electric heater of rotary-type dehumidifier. Energy conservation of main cable dehumidification system for the Yangtze River highway bridge is calculated, and the results show that energy conservation rate can reach 44 %.

Efficacy and nursing of stereotactic radiotherapy in lung cancer patients with brain metastases

Objective: To observe the efficacy of stereotactic radiotherapy (SRT) in lung cancer patients with brain metas-tases and explore the nursing for those patients. Methods: From June 2002 to December 2006, 43 patients of lung cancer with brain metastases were treated with SRT, 8 of them were treated with the association of whole-brain radiotherapy (WBRT) and 6 of them were treated with combination of chemotherapy. During the period of SRT, the patients were applied with active psychological nursing and diet nursing. We also tried to prevent patients from epicranium injury, and meanwhile, patients were asked to took active convalesce exercise. Results: All patients finished SRT without serious reaction and complication. Local control rate was 81.4%, nervous system symptoms relief rate was 76.7% and KPS score was raised significantly. Survival time ranged from 2 to 34 months, median survival time was 8.5 months, and 6-month, 1-and 2-year survival rates were 58.9%, 26.2%, and 6.0% respectively. Conclusion: SRT was one of the effective palliation treatments for the lung cancer patients with brain metastases, and with the assistance of effective nursing, which would prolong their survival time and improved quality of life.