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Urgent one-stage endoscopic treatment for choledocholithiasis related moderate to severe acute cholangitis: A propensity scorematched analysis
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作者 Yang Zhou Yin-Qiu Zhang +4 位作者 Shuai-Jing Huang Yan Liang Xiao Liang Masoom Wali Ya-Dong Feng 《World Journal of Gastroenterology》 SCIE CAS 2024年第15期2118-2127,共10页
BACKGROUND During emergency endoscopic retrograde cholangiopancreatography(ERCP),the safety and feasibility of performing one-stage endoscopic treatment for patients with acute cholangitis(AC)due to choledocholithiasi... BACKGROUND During emergency endoscopic retrograde cholangiopancreatography(ERCP),the safety and feasibility of performing one-stage endoscopic treatment for patients with acute cholangitis(AC)due to choledocholithiasis are unclear.AIM To investigate the safety and feasibility of one-stage endoscopic treatment for moderate to severe AC.METHODS We enrolled all patients diagnosed with moderate to severe cholangitis due to common bile duct stones from January 2019 to July 2023.The outcomes were compared in this study between patients who underwent ERCP within 24 h and those who underwent ERCP 24 h later,employing a propensity score(PS)frame-work.Our primary outcomes were intensive care unit(ICU)admission rates,ICU length of stay,and duration of antibiotic use.RESULTS In total,we included 254 patients and categorized them into two groups based on the time elapsed between admission and intervention:The urgent group(≤24 h,n=102)and the elective group(>24 h,n=152).Ninety-three pairs of patients with similar characteristics were selected by PS matching.The urgent ERCP group had more ICU admissions(34.4%vs 21.5%,P=0.05),shorter ICU stays(3 d vs 9 d,P<0.001),fewer antibiotic use(6 d vs 9 d,P<0.001),and shorter hospital stays(9 d vs 18.5 d,P<0.001).There were no significant differences observed in adverse events,in-hospital mortality,recurrent cholangitis occurrence,30-d readmission rate or 30-d mortality.CONCLUSION Urgent one-stage ERCP provides the advantages of a shorter ICU stay,a shorter duration of antibiotic use,and a shorter hospital stay. 展开更多
关键词 Acute cholangitis Endoscopic retrograde cholangiopancreatography one-stage treatment Optimal time
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Anammox生物膜富集培养过程中硝化菌的增殖特性
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作者 李韧 于莉芳 +3 位作者 刘甜 刘然 余涛 彭党聪 《中国环境科学》 EI CAS CSCD 北大核心 2024年第2期730-738,共9页
在升流式厌氧固定床生物膜(UAFB)反应器中,通过逐步提升氮负荷富集培养厌氧氨氧化(Anammox)生物膜,考察培养过程中Anammox生物膜上硝化菌的增殖特性.结果表明,逐步提升氮负荷可以成功实现厌氧氨氧化菌(An AOB)的富集,但随着基质浓度的提... 在升流式厌氧固定床生物膜(UAFB)反应器中,通过逐步提升氮负荷富集培养厌氧氨氧化(Anammox)生物膜,考察培养过程中Anammox生物膜上硝化菌的增殖特性.结果表明,逐步提升氮负荷可以成功实现厌氧氨氧化菌(An AOB)的富集,但随着基质浓度的提升,反应器中ΔNO_(3)~-/ΔNH_(4)^(+)比值逐渐从0.76±0.11降低至0.42±0.10,表明高基质浓度更有利于Anammox生物膜的培养且不利于亚硝酸盐氧化菌(NOB)竞争亚硝酸盐.而随着培养进行,生物膜的氨氧化活性(AUR)和亚硝酸盐氧化活性(NUR)均大幅增加但最终趋于稳定.高通量测序结果表明,系统在成功富集了33.51%的Ca.Brocadia和3.02%的Ca.Jettenia的同时,氨氧化菌(AOB)-Nitrosomonas的相对丰度仅有0.78%,但培养后优势NOB-Nitrospira的丰度高达2.32%,因此,Anammox生物膜培养过程中硝化菌的增殖现象不可避免,而明显的NOB优势增殖有可能会对PN/Anammox生物脱氮工艺的稳定运行造成负面影响. 展开更多
关键词 厌氧氨氧化生物膜 升流式厌氧固定床生物膜反应器(UAFB) NITROSPIRA 硝化菌
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Fe(Ⅲ)对Anammox污泥脱氮效能长短期影响
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作者 郭佳文 林兴 +3 位作者 李祥 黄勇 刘天琪 赵魏东 《中国环境科学》 EI CAS CSCD 北大核心 2024年第3期1278-1285,共8页
通过接种厌氧氨氧化(Anammox)污泥,研究了Fe(Ⅲ)对Anammox污泥脱氮效能长短期影响.结果表明,适量提升Fe(Ⅲ)浓度可以提升Anammox菌的活性.当进水Fe(Ⅲ)浓度达到0.09mol/L时,反应器氮去除速率最高为0.238kg/(L·d),较对照组提升了14.... 通过接种厌氧氨氧化(Anammox)污泥,研究了Fe(Ⅲ)对Anammox污泥脱氮效能长短期影响.结果表明,适量提升Fe(Ⅲ)浓度可以提升Anammox菌的活性.当进水Fe(Ⅲ)浓度达到0.09mol/L时,反应器氮去除速率最高为0.238kg/(L·d),较对照组提升了14.2%.继续提高进水Fe(Ⅲ)浓度,氮去除速率逐步下降,当Fe(Ⅲ)浓度升至0.18mol/L时,氮去除速率降至0.215kg/(L·d),与最高氮去除速率相比下降10.75%.采用Haldane抑制动力学模型拟合得到Fe(Ⅲ)对Anammox半速率常数(KFe)为0.012mol/L,半抑制常数(KI)为0.449mol/L.长期结果表明,在0.09mol/L Fe(Ⅲ)浓度下,Anammox氮去除速率增幅最快,并且随着Fe(Ⅲ)浓度增加而逐步降低.由于Fe(Ⅲ)代替了NO_(2)^(-)-N作为电子受体发生厌氧铁氨氧化反应,在含有Fe(Ⅲ)的反应器中NO_(2)^(-)-N与NH_(4)^(+)-N的转化比在1.108~1.227之间波动,明显低于理论值1.32,并随Fe(Ⅲ)浓度的提升而降低.扫描电镜结果表明,添加Fe(Ⅲ)可使Anammox菌细胞结构更加稳定. 展开更多
关键词 Fe(Ⅲ) 厌氧氨氧化 脱氮性能 抑制动力学 扫描电镜
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温度与负荷对Anammox菌自富集启动的PDA的影响
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作者 马雨晴 王博 李笑迪 《中国环境科学》 EI CAS CSCD 北大核心 2024年第3期1307-1313,共7页
采用UASB反应器,接种厌氧氨氧化菌自富集启动的PDA污泥,在温度由25℃下降到19℃条件下逐步将进水氮浓度从20mg/L提高到100mg/L(即氮负荷从3.2g/(m^(3)·d)提高到4.0g/(m^(3)·d)),反应器共运行115d,总氮去除率最高可达到89.9%.1... 采用UASB反应器,接种厌氧氨氧化菌自富集启动的PDA污泥,在温度由25℃下降到19℃条件下逐步将进水氮浓度从20mg/L提高到100mg/L(即氮负荷从3.2g/(m^(3)·d)提高到4.0g/(m^(3)·d)),反应器共运行115d,总氮去除率最高可达到89.9%.16S rRNA基因测序结果表明,Candidatus Brocadia作为主要厌氧氨氧化功能菌在生物填料中丰度达到3.7%,短程反硝化功能菌Thaurea在絮体污泥中的丰度最高达15.7%.宏基因组学分析显示与短程反硝化相关的基因Nar,Nap和与厌氧氨氧化相关的Nir,Hzs和Hdh基因表达程度较高. 展开更多
关键词 厌氧氨氧化 微生物种群 宏基因组学分析 脱氮
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温度影响下Anammox-DAMO系统N2O产消机制及调控
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作者 韩梦茹 楼菊青 徐帆 《中国环境科学》 EI CAS CSCD 北大核心 2024年第3期1324-1334,共11页
以厌氧氨氧化-反硝化厌氧甲烷氧化(Anammox-DAMO)系统为研究对象,考察了不同温度对该系统性能和N_(2)O产消的影响,建立了该过程的酶动力学模型.结果表明,在40℃的高温胁迫下系统性能明显恶化且积累了更多的N_(2)O,Acidovorax和Thauera... 以厌氧氨氧化-反硝化厌氧甲烷氧化(Anammox-DAMO)系统为研究对象,考察了不同温度对该系统性能和N_(2)O产消的影响,建立了该过程的酶动力学模型.结果表明,在40℃的高温胁迫下系统性能明显恶化且积累了更多的N_(2)O,Acidovorax和Thauera属丰度在高温条件下显著降低,而Bacillus属丰度则上升,N_(2)O还原酶活性的抑制是N_(2)O排放量增加的主要因素.酶动力学拟合结果表明35℃时可以最大程度地实现N_(2)O减排. 展开更多
关键词 温度 anammox-DAMO系统 N_(2)O 调控策略
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探析生物炭对Anammox工艺脱氮的影响及其机理
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作者 胡颖斌 吴孟李 +3 位作者 范利青 张琪雨 吴艳龙 罗晓楠 《净水技术》 CAS 2024年第7期22-33,44,共13页
厌氧氨氧化(Anammox)因其高效率和低能耗的特点,被认为是当下最有前景的生物脱氮技术。但是,Anammox工艺在主流污水处理中的应用仍面临挑战,比如厌氧氨氧化菌倍增时间长、对生长环境要求苛刻、电子受体不易获得、生物质易随水流流失等... 厌氧氨氧化(Anammox)因其高效率和低能耗的特点,被认为是当下最有前景的生物脱氮技术。但是,Anammox工艺在主流污水处理中的应用仍面临挑战,比如厌氧氨氧化菌倍增时间长、对生长环境要求苛刻、电子受体不易获得、生物质易随水流流失等。近年来,生物炭作为一种廉价易得、具有大比表面积、表面富含官能团的环境友好型载体,在促进Anammox脱氮工艺方面受到越来越多的关注。文中从制备方法对生物炭的影响出发,总结不同生物炭类型作为Anammox脱氮工艺生物载体的特点,并通过回顾前人的研究,尝试分析生物炭作为生物载体在Anammox脱氮工艺中缩短启动时间、提高脱氮性能和减轻污染物抑制方面的作用,以期为生物炭在Anammox脱氮工艺中的大规模应用提供参考。 展开更多
关键词 厌氧氨氧化 生物炭 胞外电子转移 表面官能团 微生物群落
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Effect of initial ammonium concentration on a one-stage partial nitrification/anammox biofilm system:Nitrogen removal performance and the microbial community
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作者 Mengyu Zhou Yun Han +3 位作者 Yang Zhuo Fen Yu Gaoyuan Hu Dangcong Peng 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2024年第9期176-188,共13页
One-stage partial nitrification coupled with anammox(PN/A)technology effectively reduces the energy consumption of a biological nitrogen removal system.Inhibiting nitrite-oxidizing bacteria(NOB)is essential for this t... One-stage partial nitrification coupled with anammox(PN/A)technology effectively reduces the energy consumption of a biological nitrogen removal system.Inhibiting nitrite-oxidizing bacteria(NOB)is essential for this technology to maintain efficient nitrogen removal performance.Initial ammonium concentration(IAC)affects the degree of inhibited NOB.In this study,the effect of the IAC on a PN/A biofilm was investigated in a moving bed biofilm reactor.The results showed that nitrogen removal efficiency decreased from 82.49%±1.90%to 64.57%±3.96%after the IAC was reduced from 60 to 20 mg N/L,while the nitrate production ratio increased from 13.87%±0.90%to 26.50%±3.76%.NOB activity increased to1,133.86 mg N/m^(2)/day after the IAC decreased,approximately 4-fold,indicating that the IAC plays an important inhibitory role in NOB.The rate-limiting step in the mature biofilm of the PN/A system is the nitritation process and is not shifted by the IAC.The analysis of the microbial community structure in the biofilm indicates that the IAC was the dominant factor in changes in community structure.Ca.Brocadia and Ca.Jettenia were the main anammox bacteria,and Nitrosomonas and Nitrospira were the main AOB and NOB,respectively.IAC did not affect the difference in growth between Ca.Brocadia and Ca.Jettenia.Thus,modulating the IAC promoted the PN/A process with efficient nitrogen removal performance at medium to low ammonium concentrations. 展开更多
关键词 Biological nitrogen removal Partial nitrification anammox Ammonium concentration BIOFILM
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污水中微量污染物对Anammox活性抑制机制研究进展 被引量:1
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作者 孙艺雯 操家顺 +2 位作者 徐润泽 张腾 刘伟京 《环境监测管理与技术》 CSCD 2023年第5期9-15,共7页
综述了芳香污染物、金属和金属纳米颗粒、抗生素等3种污水中常见微量污染物对厌氧氨氧化(Anammox)菌群的抑制效应,分析了导致Anammox活性丧失的抑制机理,指出抑制作用多表现为对细胞膜的损害,抑制效果受污染物在细胞质中扩散、溶解和摄... 综述了芳香污染物、金属和金属纳米颗粒、抗生素等3种污水中常见微量污染物对厌氧氨氧化(Anammox)菌群的抑制效应,分析了导致Anammox活性丧失的抑制机理,指出抑制作用多表现为对细胞膜的损害,抑制效果受污染物在细胞质中扩散、溶解和摄入细胞能力的影响。针对不同的污染物提出了相应的应对策略,可以通过淘洗菌种、投加新鲜种群、添加促进剂等方式提高Anammox活性和胞外聚合物(EPS)含量,也可以利用驯化手段诱导抗性基因的产生,或采用生物膜法增强Anammox群落对污染物的耐受性。 展开更多
关键词 厌氧氨氧化 微量污染物 活性抑制 抑制机制 污水处理
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ABBR启动ANAMMOX工艺的性能及内部流场结构研究
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作者 孟皓 运红颖 汪涛 《水处理技术》 CAS CSCD 北大核心 2023年第8期98-103,109,共7页
厌氧氨氧化(ANAMMOX)作为一种新兴的污水生物脱氮技术,在目前的水处理行业受到了广泛的关注。反应器的选型对于该工艺的快速启动起着至关重要的作用,而通过Fluent流体仿真模拟软件考察不同反应器的内部流场结构,从流体动力学结合微生物... 厌氧氨氧化(ANAMMOX)作为一种新兴的污水生物脱氮技术,在目前的水处理行业受到了广泛的关注。反应器的选型对于该工艺的快速启动起着至关重要的作用,而通过Fluent流体仿真模拟软件考察不同反应器的内部流场结构,从流体动力学结合微生物生长状态初步分析反应器构型对ANAMMOX工艺的强化机理。本研究采用厌氧折流板反应器(ABR)及在其基础上改进的厌氧折流板生物膜反应器(ABBR)启动ANAMMOX工艺,对比研究两种反应器启动ANAMMOX工艺的性能。反应器控制条件在温度为25℃,HRT为24 h,进水氨氮和NO_(2)^(-)-N质量浓度均为50 mg/L。ABR启动ANAMMOX工艺需要49 d,ABBR启动ANAMMOX工艺仅需35 d,启动成功时ABR和ABBR的总氮去除率分别为86.11%和89.79%。结果表明,ABBR相比于ABR表现出显著更好的ANAMMOX工艺启动性能。本研究再运用Fluent软件模拟两种反应器的内部流场结构。结果显示,相比于ABR,ABBR具有更加丰富的流线,且其内部流场具有更加明显的紊流效果。ABBR流场结构特性保证了更佳的传质效果,且ABBR内部形成的生物膜又显著提高反应器对ANAMMOX菌的截留能力,从而缩短了反应器的启动周期,同时提高ANAMMOX工艺脱氮效率。 展开更多
关键词 anammox 启动性能 ABBR ABR 流场结构
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新型膜组件MBR启动运行Anammox工艺及膜污染控制 被引量:1
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作者 运红颖 孟皓 +1 位作者 邢芳华 汪涛 《工业水处理》 CAS CSCD 北大核心 2023年第1期124-130,共7页
膜生物反应器(MBR)作为一种高效的厌氧氨氧化(Anaerobic ammonia oxidation,Anammox)反应器受到研究者的广泛关注。然而,膜污染问题制约了MBR在Anammox领域的工程应用。为了减缓膜污染的形成,设计了一种新型伞式膜组件,再在这种膜组件... 膜生物反应器(MBR)作为一种高效的厌氧氨氧化(Anaerobic ammonia oxidation,Anammox)反应器受到研究者的广泛关注。然而,膜污染问题制约了MBR在Anammox领域的工程应用。为了减缓膜污染的形成,设计了一种新型伞式膜组件,再在这种膜组件的基础上构建MBR用于启动运行Anammox工艺,通过形成特定的流场结构强化膜附近水流剪切力和水流速度,从而实现膜组件的自清洗,进而延长膜组件的使用周期。该反应器经55 d运行成功启动Anammox工艺,直到运行81 d才达到更换膜组件的条件(跨膜压力达到0.045 MPa)。结果表明,新型膜组件MBR不仅可以缩短Anammox工艺的启动周期,还可以有效缓解膜污染。扫描电镜结果表明,运行81 d的膜组件表面形成了明显的滤饼层,其主要污染物为具有花椰菜结构的厌氧氨氧化菌(AnAOB)及生长代谢产物。同时利用Ansys Fluent模拟工艺运行过程中伞式膜组件周围的流场结构,从流体动力学角度解释了伞式膜组件缓解膜污染的机理。研究表明,膜组件附近强化的水流剪切力和水流速度作用于展开的膜丝,显著减缓滤饼层的形成。 展开更多
关键词 厌氧氨氧化 膜污染 膜生物反应器
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A Rare Long Term Survival Case of Complete Pentalogy of Cantrell in Adult after One-Staged Surgery
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作者 Hao Hong Nianguo Dong +4 位作者 Mingxing Xie Lin Li Si Chen Wengang Sun Xiaoqing Hu 《Congenital Heart Disease》 SCIE 2021年第5期513-518,共6页
Pentalogy of Cantrell is a rare congenital abnormality.Even with high-quality medical care and staged corrective surgeries in professional hospitals,the mortality rate is still very high and long-term prognosis is poo... Pentalogy of Cantrell is a rare congenital abnormality.Even with high-quality medical care and staged corrective surgeries in professional hospitals,the mortality rate is still very high and long-term prognosis is poor.Survival is largely determined by the complexity and severity of cardiac abnormalities,the efficiency of abdominal wall closure and postoperative complications.A 24-year-old male patient with complete pentalogy of Cantrell was diagnosed.One-stage surgical repair of all abnormalities were completed.The patient recovered well and had been follow-up for 7 years.He has a good cosmetic outcome,with no signs of cardiac dysfunction.No complications were noted. 展开更多
关键词 Pentalogy of cantrell ADULT one-stage surgery
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One-stage revision arthroplasty in a patient with ochronotic arthropathy accompanied by joint infection:A case report
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作者 Xiao-Chao Wang Xiao-Min Zhang +6 位作者 Wan-Ling Cai Zhen Li Chao Ma Yi-Hai Liu Qi-Lian He Tian-Sheng Yan Xue-Wei Cao 《World Journal of Clinical Cases》 SCIE 2022年第25期9036-9043,共8页
BACKGROUND Ochronotic arthropathy(OcA)is a rare disease,which is caused by the accumulation of homogentisic acid in the joint.Patients with OcA have obvious joint pain and the disease progresses rapidly,eventually res... BACKGROUND Ochronotic arthropathy(OcA)is a rare disease,which is caused by the accumulation of homogentisic acid in the joint.Patients with OcA have obvious joint pain and the disease progresses rapidly,eventually resulting in disability.Arthroplasty is an efficacious treatment in patients with OcA.However,when OcA patients have joint infection,is joint replacement an option?In the present report,we performed total knee arthroplasty in a patient with OcA and knee infection under the guidance of one-stage revision theory.CASE SUMMARY A 64-year-old male was referred to our hospital due to severe left knee pain with limited mobility for 2 years.On physical examination,the patient was found to have dark brown pigmentation of the sclera and auricle.Laboratory test results showed elevations in C-reactive protein level(65.79 mg/L)and erythrocyte sedimentation rate(90.00 mm/h).The patient underwent debridement of the left knee joint,during which the cartilage surface of the knee joint was found to be black-brown in color.Bacterial culture of synovial fluid revealed Achromobacter xylosoxidans.We then carried out arthroplasty under the guidance of the theory of one-stage revision.After surgery,the patient’s left knee joint pain disappeared and function recovered without joint infection.CONCLUSION OcA accompanied by joint infection is rare.One-stage revision arthroplasty may be a treatment option for this disease. 展开更多
关键词 Ochronotic arthropathy Arthroplasty one-stage revision ALKAPTONURIA Homogentisic acid Case report
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高盐环境下ANAMMOX-UASB反应器启动特性
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作者 吴丹阳 栾亚萍 +3 位作者 宋利国 穆明浩 刘新强 季军远 《中国海洋大学学报(自然科学版)》 CAS CSCD 北大核心 2023年第S01期84-93,共10页
在高盐环境下(含盐量3%)以耐高盐厌氧反硝化颗粒污泥作为接种污泥启动ANAMMOX-UASB反应器,研究其启动特性。结果表明,高盐环境下ANAMMOX-UASB启动成功仅耗时186 d,总氮(Total Nitrogen,TN)去除率在87.5%以上,NH^(+)_(4)-N和NO^(-)_(2)-... 在高盐环境下(含盐量3%)以耐高盐厌氧反硝化颗粒污泥作为接种污泥启动ANAMMOX-UASB反应器,研究其启动特性。结果表明,高盐环境下ANAMMOX-UASB启动成功仅耗时186 d,总氮(Total Nitrogen,TN)去除率在87.5%以上,NH^(+)_(4)-N和NO^(-)_(2)-N消耗量之比(Rs)、NH^(+)_(4)-N消耗量与NO^(-)_(3)-N生成量之比(Rp)分别为1.13和0.26。启动成功后反应器中污泥由黑色逐步变为红褐色,污泥颗粒化形态较为明显。高盐环境下ANAMMOX-UASB启动成功后污泥中Heme c含量、硝酸盐还原酶(Nitrate reductase,Nar)活性、亚硝酸盐还原酶(Nitrite reductase,Nir)活性、联氨氧化酶(Hydrazine oxidase,HZO)活性、联氨合成酶(Hydrazine synthase,HZS)活性较接种污泥的增幅分别为8.00、6.74、8.34、0.58和6.00倍;门水平下,厌氧氨氧化菌所属的浮霉菌门丰度占比为6.05%,较接种污泥增加了5.11倍;启动过程中反硝化菌属丰度下降,厌氧氨氧化菌属丰度不断增加,优势菌属为Candidatus_Brocadia,启动成功后的丰度是接种污泥的12.98倍。 展开更多
关键词 厌氧氨氧化 高盐 UASB 反硝化 颗粒污泥
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Should we use similar perioperative protocols in patients undergoing unilateral and bilateral one-stage total knee arthroplasty?
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作者 Artit Laoruengthana Piti Rattanaprichavej +3 位作者 Parin Samapath Bhuwad Chinwatanawongwan Pariphat Chompoonutprapa Krit Pongpirul 《World Journal of Orthopedics》 2022年第1期58-69,共12页
BACKGROUND Bilateral one-stage total knee arthroplasty(BTKA)is now in greater use as an alternative option for patients with bilateral end-stage knee arthropathy.However,postoperative pain and disablement during conva... BACKGROUND Bilateral one-stage total knee arthroplasty(BTKA)is now in greater use as an alternative option for patients with bilateral end-stage knee arthropathy.However,postoperative pain and disablement during convalescence from BTKA,and procedure-related complications have been concerning issues for patients and surgeons.Although some studies reported that BTKA in selected patients is as safe as the staged procedure,well-defined guidelines for patient screening,and perioperative care and monitoring to avoid procedure-related complications are still controversial.AIM To compare the perioperative outcomes including perioperative blood loss(PBL),cardiac biomarkers,pain intensity,functional recovery,and complications between unilateral total knee arthroplasty(UTKA)and BTKA performed with a similar perioperative protocol.METHODS We conducted a retrospective study on consecutive patients undergoing UTKA and BTKA that had been performed by a single surgeon with identical perioperative protocols.The exclusion criteria of this study included patients with an American Society of Anesthesiologists score>3,and known cardiopulmonary comorbidity or high-sensitivity Troponin-T(hs-TnT)>14 ng/L.Outcome measures included visual analogue scale(VAS)score of postoperative pain,morphine consumption,range of knee motion,straight leg raise(SLR),length of stay(LOS),and serum hemoglobin(Hb)and hs-TnT monitored during hospitalization.RESULTS Of 210 UTKA and 137 BTKA patients,those in the BTKA group were younger and more predominately female.The PBL of the UTKA vs BTKA group was 646.45±272.26 mL vs 1012.40±391.95 mL(P<0.01),and blood transfusion rates were 10.48%and 40.88%(P<0.01),respectively.Preoperative Hb and body mass index were predictive factors for blood transfusion in BTKA,whereas preoperative Hb was only a determinant in UTKA patients.The BTKA group had significantly higher VAS scores than the UTKA group at 48,72,and 96 h after surgery,and also had a significantly lower degree of SLR at 72 h.The BTKA group also had a significantly longer LOS than the UTKA group.Of the patients who had undergone the procedure,5.71%of the UTKA patients and 12.41%of the BTKA patients(P=0.04)had hs-TnT>14 ng/L during the first 72 h postoperatively.However,there was no difference in other outcome measures and complications.CONCLUSION Following similar perioperative management,the blood transfusion rate in BTKA is 4-fold that required in UTKA.Also,BTKA is associated with higher pain intensity at 48 h postoperatively and prolonged LOS when compared to the UTKA.Hence,BTKA patients may require more extensive perioperative management for blood loss and pain,even if having no higher risk of complications than UTKA. 展开更多
关键词 Bilateral one-stage total knee arthroplasty Unilateral total knee arthroplasty Blood loss Postoperative pain High-sensitivity Troponin-T Cardiovascular events
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聚对苯二甲酸乙二醇酯微塑料对Anammox颗粒污泥的尺寸影响效应
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作者 洪先韬 周鑫 《中国环境科学》 EI CAS CSCD 北大核心 2023年第12期6406-6412,共7页
为探究微塑料(MPs)对活性污泥脱氮性能的尺寸影响效应,采用水质测定、活性测试、物化表征及微生物群落分析等方法,探索了不同粒径下(75~500μm)聚对苯二甲酸乙二醇酯(PET)对厌氧氨氧化颗粒污泥(AnGS)的影响.结果显示,投加75和150μm的PE... 为探究微塑料(MPs)对活性污泥脱氮性能的尺寸影响效应,采用水质测定、活性测试、物化表征及微生物群落分析等方法,探索了不同粒径下(75~500μm)聚对苯二甲酸乙二醇酯(PET)对厌氧氨氧化颗粒污泥(AnGS)的影响.结果显示,投加75和150μm的PET-MPs时,Anammox脱氮效能低于控制组,而300和500μm组中却表现出优于控制组.厌氧氨氧化活性(SAA)测试具有相似结果.胞外聚合物(EPS)分析发现PET-MPs粒径越小,EPS分泌和PN/PS越高,AnGS结构越不完整.小粒径下PET对Anammox抑制主要与颗粒污泥所具有的较低Zeta电位和较小的比表面积显著相关.而大粒径PET-MPs则减少了与MPs接触的机率且能提供更多的活性位点,促进了Anammox底物的传递效率.高通量测序结果表明PET-MPs粒径大小决定了微生物群落的多样性和丰富度,尤其对Anammox菌属(Candidatus Kuenenia)相对丰度影响显著. 展开更多
关键词 微塑料 聚对苯二甲酸乙二醇酯 厌氧氨氧化 生物脱氮 微生物群落 影响
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One-Stage Bilateral Total Hip Arthroplasty for Hemophilic Spontaneous Ankylotic Hip: A Case Report
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作者 Mariko Asahi Atsushi Kusaba +2 位作者 Akihiko Maeda Saiji Kondo Takahide Tsuchiya 《Case Reports in Clinical Medicine》 2020年第9期269-274,共6页
Total hip arthroplastys (THAs) for hemophilic spontaneous ankylotic hips are rare. We performed one-stage bilateral THA for hemophilic patient and I would like to report the results of the case. A 61-year-old male had... Total hip arthroplastys (THAs) for hemophilic spontaneous ankylotic hips are rare. We performed one-stage bilateral THA for hemophilic patient and I would like to report the results of the case. A 61-year-old male had been diagnosed with mild hemophilia A as a neonate. He had severe pain in both hips and moderate pain in both knees. His hips were ankylotic and had no mobility. Uncemented simultaneous bilateral THAs were performed under general anesthesia. This case suggests that one-stage THA can be a good option for hemophilic hips, provided that sufficient substitution therapy is used. 展开更多
关键词 Hemophilic Arthropathy one-stage Bilateral THA COMPLICATION
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Anammox的实现及其应用前景分析
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作者 蒙小俊 龚晓松 +1 位作者 王秋利 韩勇 《工业水处理》 CAS CSCD 北大核心 2023年第4期45-51,共7页
低碳高效的Anammox技术在污水处理中对实现“双碳”目标具有潜力,并为污水处理厂工艺带来技术变革。对传统脱氮和Anammox脱氮进行了比较,指出Anammox在节能降耗和温室气体减排中具有优势;分析了实现短程硝化Anammox(PNA)和短程反硝化Ana... 低碳高效的Anammox技术在污水处理中对实现“双碳”目标具有潜力,并为污水处理厂工艺带来技术变革。对传统脱氮和Anammox脱氮进行了比较,指出Anammox在节能降耗和温室气体减排中具有优势;分析了实现短程硝化Anammox(PNA)和短程反硝化Anammox(PDA)稳定获得NO_(2)^(-)的控制策略,其中游离氨(FA)、温度、DO和间歇曝气是PNA的重点调控因子,而碳氮比是PDA的重要控制因素。基于控制原理,Anammox技术在多种污水中具有应用前景,但PNA更适合污泥消化液、污泥脱水液和垃圾渗滤液的处理,PDA则更适合低温、低NH_(4)^(+)-N的主流污水,以及城市污水和NO_(3)^(-)污水混合污水的处理。未来研究的重点在于:界定适于PNA和PDA的污水种类,考察污水组分对PNA/PDA的影响及响应,中试验证各种污水的PNA/PDA,改造升级传统脱氮以实现PNA/PDA。 展开更多
关键词 生物脱氮 anammox 节能降耗 碳达峰 碳中和
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Fe^(2+)与Fe^(3+)对anammox体系中N_(2)O排放的影响
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作者 杨余涤非 沈雁文 朱南文 《环境科学与技术》 CAS CSCD 北大核心 2023年第11期11-19,共9页
有研究表明,适量Fe^(2+)与Fe^(3+)能够促进anammox菌体代谢,但对于菌体N_(2)O产量的影响仍未可知。该文以批次实验的形式探究anammox在不同浓度Fe^(2+)与Fe^(3+)浓度下的N_(2)O产量,并分析其微生物组学和功能基因变化。结果表明,加入Fe^... 有研究表明,适量Fe^(2+)与Fe^(3+)能够促进anammox菌体代谢,但对于菌体N_(2)O产量的影响仍未可知。该文以批次实验的形式探究anammox在不同浓度Fe^(2+)与Fe^(3+)浓度下的N_(2)O产量,并分析其微生物组学和功能基因变化。结果表明,加入Fe^(2+)的组别中N_(2)O排放量在20 mg/L Fe^(2+)时最高(0.29 mg/L),30 mg/L Fe^(2+)时下降47.01%;加入Fe^(3+)的组别中N_(2)O排放量随Fe^(3+)浓度递增,30 mg/L Fe^(3+)时N_(2)O最高排放量为0.17 mg/L。微生物群落多样性分析表明,5 mg/L Fe^(2+)和Fe^(3+)能刺激Candidatus Kuenenia的生长,然而反硝化菌Denitratisoma和Limnobacter随Fe^(2+)和Fe^(3+)浓度的提高而增加。功能基因分析表明,N_(2)O的释放与硝化途径、DNRA途径、反硝化途径以及anammox途径中的功能基因有关,并与基因norB、nirD、hcp呈显著正相关(P<0.05)。该文阐述了Fe^(2+)与Fe^(3+)对anammox体系N_(2)O排放的影响,可为anammox工艺中的N_(2)O控制提供参考。 展开更多
关键词 Fe^(3+) Fe^(2+) N_(2)O 厌氧氨氧化 微生物群落结构 功能基因
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基于LSSVM与NSGA-Ⅱ的反硝化-Anammox工艺协同优化研究
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作者 段佩 张锋 +1 位作者 崔宏志 杜妍 《粘接》 CAS 2023年第12期131-134,共4页
针对反硝化-Anammox工艺中整体脱氮除碳能力较低的问题,提出基于LSSVM与NSGA-Ⅱ构建废水脱氮除碳处理的多目标优化模型。利用基于LSSVM的软测量方法进行脱氮除碳结果的相关变量的预测,通过NSGA-Ⅱ算法求解反硝化-Anammox工艺的全局最佳... 针对反硝化-Anammox工艺中整体脱氮除碳能力较低的问题,提出基于LSSVM与NSGA-Ⅱ构建废水脱氮除碳处理的多目标优化模型。利用基于LSSVM的软测量方法进行脱氮除碳结果的相关变量的预测,通过NSGA-Ⅱ算法求解反硝化-Anammox工艺的全局最佳进水条件的解集。经仿真实验证明,通过LSSVM预测的COD_(rem)等相关变量与真实值的误差较小,基本满足预测需求。按照优化模型求解出的帕累托解集进行废水脱氮除碳处理,在NH_(3)-N的去除率达到90.67%的同时,对TN、COD的去除率分别为80.21%、85.73%,氮、碳2种元素的整体去除率为85.54%,能够满足反硝化-Anammox工艺协同优化的需求。 展开更多
关键词 LSSVM NSGA-Ⅱ算法 厌氧氨氧化工艺 反硝化过程 协同优化
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One-stage urethroplasty with circumferential vascular pedicle preputial island flap for perineal hypospadias
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作者 朱再生 《外科研究与新技术》 2011年第4期268-269,共2页
Objective To report the treatment of perineal hypospadias with one - stage urethroplaty with circumferential vascular pedicle preputial island flap. Methods A circumferential incision was made proximal to the cprona a... Objective To report the treatment of perineal hypospadias with one - stage urethroplaty with circumferential vascular pedicle preputial island flap. Methods A circumferential incision was made proximal to the cprona and the urethral plate to correct chordee. A U - shaped skin incision was then made surrounding the meatus。 展开更多
关键词 one-stage urethroplasty with circumferential vascular pedicle preputial island flap for perineal hypospadias
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