检索结果-南通市图书馆

维普期刊数据库博看期刊

An improved correlation to determine minimum miscibility pressure of CO2–oil system

在线全文

学校读者我要写书评

暂无评论

Green Energy & Environment 2020年第1期5卷 97-104页

作者： Guangying ch.n hongxia Gao Kaiyun Fu Haiyan Zhang Zhiwu Liang Paitoon Tontiwachwuthikul Department of chemistry&chemical Engineering Zhoukou Normal UniversityHenanZhoukou466001China Joint International Center for CO2 Capture and Storage(iCCS) Provincial Hunan Key Laboratory for Cost-effective Utilization of Fossil Fuel Aimed at Reducing Carbon-dioxide EmissionsCollege of Chemistry and Chemical EngineeringHunan UniversityChangshaHunan410082China Department of Petroleum and chemical Engineering Qinzhou UniversityQinzhouGuangxi535000China Faculty of Engineering and Applied Science University of ReginaReginaSaskatchewanS4S 0A2Canada

An accurate and reliable estimation of minimum miscibility pressure(MMP) of CO2-oil system is a critical task for the design and implementation of CO2 miscible displacement *** this study,an improved CO2-oil MMP correlation was developed to predict the MMP values for both pure and impure CO2 injection cases based on ten influential factors,*** temperature(TR),molecular weight of C7+oil components(MWC7+),mole fraction of volatile oil components(xvol),mole fraction of C2-C4 oil components(xC2-C4),mole fraction of C5-C6 oil components(xCs-5-C6),and the gas stream mole fractions of CO2(yCO2),H2S(yH2S),C1(yC1),hydrocarbons(yHC)and n2(yn2).The accuracy of the improved correlation was evaluated against experimental data reported in literature concurrently with those estimated by several renowned *** was found that the improved correlation provided higher prediction accuracy and consistency with literature experimental data than other literature *** addition,the predictive capability of the improved correlation was further validated by predicting an experimentally measured CO2-Oil MMP data,and it showed an accurate result with the absolute deviation of 4.15%.Besides,the differential analysis of the improved correlation was analyzed to estimate the impact of parameters uncertainty in the original MMP data on the calculated ***,sensitivity analysis was performed to analyze the influence of each parameter on MMP qualitatively and *** results revealed that the increase of xC2-C4,xC5-C6 and yH2 S lead to the decrease of MMP,while the increase of TR,MWC7+,xvol,yCO2,YC1,yHC and yn2 tend to increase the ***,the relevance of each parameter with MMP follows the order of TR> xC5-C6> MWC7+> xvol> yH2 S> yHC> yCO2>yC1>yn2>xC2-C4.

关键词： Minimum miscibility pressure Correlation CO2 miscible flooding Enhanced oil recovery

Enhanced photocatalytic performance of Bi_(4)O_(5)Br_(2)with threedimensionally ordered macroporous structure for phenol removal

在线全文

学校读者我要写书评

暂无评论

nano Research 2023年第7期16卷 8871-8881页

作者： Kunfeng Zhang hongxia ch.n Wenbo Pei Hongxing Dai Junshan Li Yongfa Zhu Department of chemistry Tsinghua UniversityBeijing 100084China College of Environmental Engineering Henan University of TechnologyZhengzhou 450001China Department of chemistry and chemical Engineering College of Environmental and Energy EngineeringBeijing University of TechnologyBeijing 100124China Institute for Advanced Study Chengdu UniversityChengdu 610106China

Herein,a series of three-dimensionally ordered macroporous(3DOM)Bi_(4)O_(5)Br_(2)photocatalysts with different macropore sizes were successfully fabricated via a polymethyl methacrylate(PMMA)template *** photocatalytic activity for phenol degradation over 3DOM Bi_(4)O_(5)Br_(2)first increased and then decreased with the rise in macropore ***,3DOM Bi_(4)O_(5)Br_(2)-255(macropore diameter ca.170 nm)exhibits the best photocatalytic activity in the static system,which is about 4.5,7.3,and 11.9 times higher than those of bulk Bi_(4)O_(5)Br_(2),Bi_(2)WO_(6),and g-C_(3)n_(4),***,high phenol conversion(75%)is also obtained over 3DOM Bi_(4)O_(5)Br_(2)-255 in the flow system under full spectrum ***,3DOM Bi_(4)O_(5)Br_(2)-255 also shows strong mineralization capacity owing to the downward shift of valance band position(0.15 V)as compared with Bi_(4)O_(5)Br_(2).Total organic carbon(TOC)removal rate over 3DOM Bi_(4)O_(5)Br_(2)-255(62%)is much higher than that of Bi_(4)O_(5)Br_(2)(17%).The enhancement in photocatalytic performance of 3DOM Bi_(4)O_(5)Br_(2)-255 is attributable to its better phenol adsorption,O_(2)activation,and charge separation and transfer *** work combines the advantages of 3D structure and surface dangling bonds,providing new possibilities for designing highly efficient photocatalysts for pollutants removal.

关键词： three-dimensionally ordered macroporous structure Bi_(4)O_(5)Br_(2) O_(2)activation photocatalysis degradation

复合植物精油对奶牛生产性能、养分消化和经济效益的影响

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国饲料 2024年第4期 29-32页

作者：刘泽群何海华顾红霞肖月曾小龙赣州师范高等专科学校江西赣州341000 金华职业技术学院浙江金华321000 赣州职业技术学院江西赣州341000

文章旨在研究复合植物精油对奶牛生产性能、养分消化和经济效益的影响。试验筛选生产次数、产奶量、泌乳周期相似的荷斯坦泌乳牛24头,随机分为试验组(n=12)和对照组(n=12),饲料均为全混合日粮,试验组在饲料中添加+60 mg/kg的复合植物精... 详细信息

文章旨在研究复合植物精油对奶牛生产性能、养分消化和经济效益的影响。试验筛选生产次数、产奶量、泌乳周期相似的荷斯坦泌乳牛24头,随机分为试验组(n=12)和对照组(n=12),饲料均为全混合日粮,试验组在饲料中添加+60 mg/kg的复合植物精油,对照组不添加任何植物精油,混合植物精油为肉桂醛和丁香油。结果表明,在生产性能方面,与对照组相比,试验组日产奶量显著提高13.97%(P <0.05),乳脂和乳蛋白含量分别显著提高2.56%和14.46%(P <0.05)。在养分消化方面,试验组干物质和粗蛋白质摄入量显著低于对照组(P <0.05),中性洗涤纤维和粗脂肪的表观消化率显著高于对照组(P <0.05)。在奶牛瘤胃甲烷含量检测中,对照组比试验组显著提高31.88%(P <0.05)。与对照组相比,试验组挥发性脂肪酸、丙酸及乙酸分别显著提高6.45%,13.10%和4.33%(P <0.05)。在经济效益方面,试验组产生的牛奶总量、乳蛋白质和乳脂肪含量均高于对照组,平均每头牛多产生21.12元的经济效益。

关键词：植物精油生产性能养分消化经济效益

罗哌卡因局部浸润法改善腹腔镜胆囊切除术后疼痛的临床观察

在线全文

学校读者我要写书评

暂无评论

首都食品与医药 2024年第15期31卷 65-67页

作者：李红霞李瑶康滢蓥天津市第一中心医院水西院区天津西青300190 南开大学临床医学院天津南开300041

目的探讨罗哌卡因局部浸润法改善腹腔镜胆囊切除术(laparoscopic cholecystectom,LC)术后疼痛的临床效果.方法选取2021年1月-2023年12月于天津市第一中心医院水西院区接受腹腔镜胆囊切除术的80例患者为研究对象,通过随机数字表法将其分... 详细信息

目的探讨罗哌卡因局部浸润法改善腹腔镜胆囊切除术(laparoscopic cholecystectom,LC)术后疼痛的临床效果.方法选取2021年1月-2023年12月于天津市第一中心医院水西院区接受腹腔镜胆囊切除术的80例患者为研究对象,通过随机数字表法将其分为对照组(n=40)和研究组(n=40),分别接受常规治疗、联合罗哌卡因局部浸润法治疗,评价患者手术情况、术后疼痛情况、不良反应.结果研究组术后首次下床活动时间、术后首次肛门排气时间、首次饮食时间短于对照组(P<0.05);研究组术后3h、6h、12h及24h VAS评分低于对照组(P<0.05);研究组术后镇痛药物使用次数、不良反应率低于对照组(P<0.05).结论腹腔镜胆囊切除术患者接受罗哌卡因局部浸润法麻醉,利于缩短术后恢复时间,减轻疼痛,降低镇痛药物使用频率,减少不良反应发生,该方案具有较高临床应用价值.

关键词：罗哌卡因局部浸润法腹腔镜胆囊切除术术后疼痛

急诊胃镜下透明帽辅助治疗上消化道异物的疗效

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国急救复苏与灾害医学杂志 2024年第6期19卷 816-819页

作者：侯小霞王红霞吴美英青岛市胶州中心医院消化内科山东青岛266300

目的分析急诊胃镜下透明帽辅助治疗上消化道异物(UEFB)的治疗效果。方法回顾性分析2018年1月—2023年1月在青岛市胶州中心医院接受治疗的75例UEFB患者,按照手术治疗方法分为胃镜治疗组(n=36)和透明帽辅助治疗组(n=39)。对比两组患者手... 详细信息

目的分析急诊胃镜下透明帽辅助治疗上消化道异物(UEFB)的治疗效果。方法回顾性分析2018年1月—2023年1月在青岛市胶州中心医院接受治疗的75例UEFB患者,按照手术治疗方法分为胃镜治疗组(n=36)和透明帽辅助治疗组(n=39)。对比两组患者手术相关指标、治疗耐受性、生命体征指标、异物取出成功率。结果透明帽辅助治疗组手术操作时间短于胃镜治疗组,视野情况、治疗耐受性优于胃镜治疗组,并发症发生率低于胃镜治疗组(P0.05)。结论使用透明帽辅助急诊胃镜对UEFB患者进行治疗,可确保手术时操作视野,有效缩短手术操作时间,降低患者的并发症发生率,治疗耐受性较好且生命体征平稳,但异物取出率较胃镜治疗患者无明显差异。

关键词：上消化道异物透明帽胃镜治疗

在线全文

学校读者我要写书评

暂无评论

实习护生参与式互动安宁疗护培训的效果探讨

护理学杂志 2024年第14期39卷 65-69页

作者：卓红霞韩辉武曾玉婷李丽岳丽青中南大学湘雅医院临床护理学教研室湖南长沙410008 中南大学湘雅护理学院国家老年疾病临床医学研究中心(湘雅医院)

目的对本科实习护生开展基于参与式互动教学理念的安宁疗护培训,评价培训效果。方法采取自愿原则招募在院实习的本科护生作为研究对象,按是否参加安宁疗护培训分为干预组(71人)和对照组(44人)。对照组接受常规临床实践和安宁疗护带教,... 详细信息

目的对本科实习护生开展基于参与式互动教学理念的安宁疗护培训,评价培训效果。方法采取自愿原则招募在院实习的本科护生作为研究对象,按是否参加安宁疗护培训分为干预组(71人)和对照组(44人)。对照组接受常规临床实践和安宁疗护带教,干预组在常规临床实践的基础上接受基于参与式互动教学理念的安宁疗护培训。临床实践结束后评价效果。结果干预组临终关怀态度得分显著高于对照组(P0.05);培训后干预组94.4%及以上护生对培训效果表示满意或基本满意。结论参与式互动安宁疗护培训得到了护生的认可,有助于改善本科实习护生临终关怀态度和帮助其正确面对患者死亡。

关键词：实习护生安宁疗护死亡态度临终关怀态度护理教学死亡教育

Ocean current observation and spectrum analysis in central chukchi Sea during the summer of 2008

在线全文

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 2013年第3期32卷 10-18页

作者： ch.n hongxia WAnG Huiwu SHU Qi WAnG Daolong LIU na First Institute of Oceanography State Oceanic Administration Key Laboratory of Marine Science and numerical Modeling State Oceanic Administration

During the summer of 2008, the third ch.nARE Arctic Expedition was carried out on board of Xuelong Icebreaker in the central chukchi Sea. A submersible mooring system was deployed and recovered at Station Cn-01 （71.40.024＇n, 167.58.910＇W） with 33 days of the current profile records, and continuous observation of temperature and salinity data were collected. This mooring station locates in the blank of similar observation area and it is the first time for our ch.nese to finish this kind of long-term mooring work in this area. This mooring system finished integrated hydrological observations with long-term continuous record of the whole profile velocity for the first time. Based on time series analysis of temperature, salinity, velocity and flow direction, we get the following main results. （1） During the observation period, the mean surface current velocity is 70.2 cm/s eastward, and velocity reaches its maximum in average at 3 m level with magnitude 90.0 cm/s, direction 206.. （2） In 9-30 m layers, the semidiurnal period variation is the most obvious, the flow direction is quite stable, and the flow is synchronous and consistent vertically. （3） Besides the semidiurnal period variation, the main variation in the upper layer is in 11-d period, with variations in period 5.5, 5.5, and 3.7 d, which reflect the influences of sea surface wind ch.nge and maintenance. （4） near the bottom the temperature ch.nge is correlated and synchronized with the conductivity.

关键词： Arctic Ocean chukchi Sea submersible mooring system long-term observations spectrumanalysis

Phase behavior and interfacial properties of symmetric polymeric ternary blends A/B/AB

在线全文

学校读者我要写书评

暂无评论

Science ch.na chemistry 2013年第12期56卷 1710-1721页

作者： LIU XiaoHan BAI ZhiQiang YAnG KeDa SU JiaYe GUO hongxia Beijing national Laboratory for Molecular Sciences Joint Laboratory of Polymer Sciences and Materials State Key Laboratory of Polymer Physics and chemistry Institute of Chemistry Chinese Academy of Sciences

In this paper, the phase behavior and interracial properties of symmetric ternary polymeric blends A/B/AB are studied by dissipative particle dynamics （DPD） simulations. By using the structure factor and nematic order parameter, we carefully characterized the diversified phases and phase transitions, and established the phase diagram of such symmetric ternary blends. It can be generally divided into four regions： disordered phase （DIS） region at high temperature, ordered lameUar phase （LAM） region, bicontinuous microemulsion （BμE） ch.nnel and phase-separated phase （2P） region at low temperature with the increase of the total volume fractions of homopolymers φn, which shows good accordance with that in previous experimental and theoretical reports. Furthermore, we calculated the elastic constants of 2P and LAM phase, and discussed the transition mech.nisms from 2P and LAM to BμE phase, respectively. The results show a direct relevance between the phase transitions and the ch.nge of interfacial properties. Finally, we also demonstrate that the B,uE ch.nnel becomes narrower in lower temperature caused by the temperature dependence of interfacial properties of ternary blends.

关键词： symmetric ternary blend phase behavior bicontinuous microemulsion dissipative particle dynamics

子宫肌瘤患者术后并发泌尿系统感染病原菌分布、耐药性及危险因素分析

在线全文

学校读者我要写书评

暂无评论

中国病原生物学杂志 2024年第9期19卷 1096-1099,1108页

作者：徐洪霞严敏陈丽敏廖莉苹贺腊刘晓琴四川省简阳市人民医院健康管理中心四川简阳641400 四川省简阳市人民医院感染管理部四川省简阳市人民医院妇产科四川省简阳市人民医院检验科四川省肿瘤医院妇科

目的探讨子宫肌瘤患者术后并发泌尿系统感染病原菌分布、耐药性及危险因素。方法选取2020年5月至2022年9月于本院接受手术治疗的314例子宫肌瘤患者作为研究对象,根据术后是否并发泌尿系统感染分为感染组(n=82)与非感染组(n=232),对感染... 详细信息

目的探讨子宫肌瘤患者术后并发泌尿系统感染病原菌分布、耐药性及危险因素。方法选取2020年5月至2022年9月于本院接受手术治疗的314例子宫肌瘤患者作为研究对象,根据术后是否并发泌尿系统感染分为感染组(n=82)与非感染组(n=232),对感染组患者开展细菌分离培养,对分离获取的病原菌实施药物敏感试验;并采用Logistic回归模型分析影响子宫肌瘤患者术后并发泌尿系统感染的危险因素。结果82例子宫肌瘤患者术后并发泌尿系统感染患者经细菌培养分离出86株病原菌,其中革兰阳性菌29株(32.80%),革兰阴性菌48株(65.73%),真菌9株(10.47%)。药敏结果显示,肠球菌属对磺胺甲噁唑/甲氧苄啶的耐药率最高,其次为红霉素、四环素;金黄色葡萄球菌对红霉素的耐药率最高,其次为磺胺甲噁唑/甲氧苄啶、呋喃妥因;大肠埃希菌对氨苄西林的耐药性最高,其次为头孢吡肟、头孢他啶;铜绿假单胞菌对氨苄西林的耐药性最高,其次为头孢噻肟、头孢他啶。感染组与非感染组在合并糖尿病、术前预防性应用抗菌药物、留置导尿管时间等差异有统计学意义(χ^(2)=12.905、7.465、6.052,均P48 h(B=0.734,OR=2.083)是影响子宫肌瘤患者术后并发泌尿系统感染的危险因素(均P48 h会对患者并发泌尿系统感染产生影响。

关键词：子宫肌瘤泌尿系统感染病原菌耐药性危险因素