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PDCA循环模式联合细节护理在腹腔镜下子宫肌瘤切除术中的应用效果及其对护理满意度的影响

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医学信息 2024年第12期37卷 152-155页

作者：张禹璐上饶市广信区第五人民医院妇产科

目的研究PDCA循环模式联合细节护理在腹腔镜下子宫肌瘤切除术（LM）中的应用效果及护理满意度的影响。方法以2019年6月-2021年12月上饶市广信区第五人民医院行LM治疗的60例患者为研究对象，依据随机数字表法分为对照组（30例）与观察... 详细信息

目的研究PDCA循环模式联合细节护理在腹腔镜下子宫肌瘤切除术（LM）中的应用效果及护理满意度的影响。方法以2019年6月-2021年12月上饶市广信区第五人民医院行LM治疗的60例患者为研究对象，依据随机数字表法分为对照组（30例）与观察组（30例）。对照组给予PDCA循环模式护理，观察组应用PDCA循环模式联合细节护理，比较两组术后恢复时间（术后肠鸣音恢复时间、术后首次下床时间、术后首次排便时间、术后住院时间）、负性情绪[抑郁自评量表（SDS）、焦虑自评量表（SAS）]、术后并发症、护理满意度。结果观察组术后肠鸣音恢复时间、术后首次下床时间、术后首次排便时间、术后住院时间均短于对照组（P<0.05）；两组护理后SDS、SAS分数均低于护理前，且观察组SDS、SAS分数低于对照组（P<0.05）；观察组术后并发症发生率小于对照组，护理满意度高于对照组（P<0.05）。结论 PDCA循环模式联合细节护理可缩短LM术后恢复时间，改善患者负性情绪，降低术后并发症风险，提高患者满意度。

关键词：腹腔镜下子宫肌瘤切除术 PDCA循环模式细节护理负性情绪护理满意度

初中数学教师教学用书功能的发展历程及优化建议

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教学与管理 2024年第7期 58-62页

作者：钱旭升张雨露浙江师范大学教育学院浙江金华321004

教师教学用书在将宏观的课程理念转化为教师可理解的知识及内容设计等方面上提供了基础保障。中华人民共和国成立以来,我国初中数学教师教学用书的功能经历了初探、发展、形成、完善四个阶段。在此过程中,初中数学教师教学用书的功能支... 详细信息

教师教学用书在将宏观的课程理念转化为教师可理解的知识及内容设计等方面上提供了基础保障。中华人民共和国成立以来,我国初中数学教师教学用书的功能经历了初探、发展、形成、完善四个阶段。在此过程中,初中数学教师教学用书的功能支持逐渐提升,在支持教学内容、教学设计、教师学习方面取得了突破性的进展。基于新一轮课程改革背景,通过历史梳理及比较研究,提出今后初中数学教师教学用书功能的优化路径:整合教学内容、优化教学设计、促进教师学习和适应在线环境。

关键词：教师教学用书教学功能教学内容教学设计教师学习

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烟盲蝽用芝麻饲养的效果及捕食能力评估

环境昆虫学报 2024年第4期46卷 807-813页

作者：章雨璐江爽刘银泉浙江大学昆虫科学研究所浙江省作物病虫生物学重点实验室农业农村部作物病虫分子生物学重点实验室杭州310058

烟盲蝽Nesidiocoris tenuis是一种杂食性天敌昆虫。本研究通过比较芝麻饲养和补充烟粉虱Bemisia tabaci猎物饲养烟盲蝽的生物学特征,评估了用芝麻人工饲养烟盲蝽的饲养效果和该种群对自然猎物的捕食能力。结果显示,用芝麻饲养的烟盲蝽... 详细信息

烟盲蝽Nesidiocoris tenuis是一种杂食性天敌昆虫。本研究通过比较芝麻饲养和补充烟粉虱Bemisia tabaci猎物饲养烟盲蝽的生物学特征,评估了用芝麻人工饲养烟盲蝽的饲养效果和该种群对自然猎物的捕食能力。结果显示,用芝麻饲养的烟盲蝽若虫发育历期较长,成虫后足胫节长度较小。然而,烟盲蝽的雌性比例、存活率、成虫生殖力以及对烟粉虱和烟蚜的捕食量没有显著差异。两个种群连续繁殖10代时,芝麻饲养的烟盲蝽种群的内禀增长率为0.2152,与补充猎物饲养的烟盲蝽种群的内禀增长率0.2398相近。以上结果表明,仅用芝麻提供营养可以进行烟盲蝽的人工饲养,并且这种方法为烟盲蝽的规模化饲养和基于芝麻种植的田间饲养模式的建立提供了参考依据。

关键词：烟盲蝽芝麻人工饲养动植食性

Mg对Al-22Si-10Ni合金组织和热学性能的影响

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铸造 2024年第2期73卷 174-179页

作者：李鹏宇张瑜璐李乙庚隋明冉南邵骏杜军华南理工大学材料科学与工程学院广东广州510640

Al-22Si-10Ni合金具有较高的导热性和较低的热膨胀特性,但硬度偏低,对其进行Mg合金化,研究Mg对该合金凝固组织和热学性能的影响。研究显示,Mg的加入主要影响合金的末期凝固进程,合金凝固末期反应由Al-Si-Al3Ni三元共晶反应向Al-Si-Mg2S... 详细信息

Al-22Si-10Ni合金具有较高的导热性和较低的热膨胀特性,但硬度偏低,对其进行Mg合金化,研究Mg对该合金凝固组织和热学性能的影响。研究显示,Mg的加入主要影响合金的末期凝固进程,合金凝固末期反应由Al-Si-Al3Ni三元共晶反应向Al-Si-Mg2Si三元共晶反应转变;热处理促进Mg_(2)Si析出,少量Mg加入后Al-22Si-10Ni合金的热导率小幅上升,继续添加Mg后,热导率出现下降;Mg对合金热膨胀系数影响较小,可显著提升合金的硬度。Al-22Si-10Ni-0.5Mg合金表现出优异的综合性能,其室温热导率130.3 W/(m·K),25~100℃范围内平均热膨胀系数为13×10^(-6)/K,硬度达到HV144,性能较为接近喷射沉积制备的高含量Al-50Si合金,具有成为电子封装用材料的潜能。

关键词： Al-22Si-10Ni合金凝固特性热导率热膨胀系数硬度

长期施肥对强筋专用小麦籽粒营养及磨粉品质性状的影响

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植物营养与肥料学报 2024年第1期30卷 190-198页

作者：贾靖孟繁港朱紫鑫张玉璐刘帅刘树堂赵长星山东省旱作农业技术重点实验室/青岛农业大学农学院山东青岛266109 青岛农业大学资源与环境学院山东青岛266109

【目的】分析不同施肥措施对小麦品质性状的影响,为优质小麦提供指导性建议。【方法】有机无机肥配合施用试验位于青岛农业大学莱阳长期定位试验站,始于1978年,共设9个处理,分别为不施肥对照(CK)、适量化肥氮138 kg/hm^(2) (N1)、适量... 详细信息

【目的】分析不同施肥措施对小麦品质性状的影响,为优质小麦提供指导性建议。【方法】有机无机肥配合施用试验位于青岛农业大学莱阳长期定位试验站,始于1978年,共设9个处理,分别为不施肥对照(CK)、适量化肥氮138 kg/hm^(2) (N1)、适量有机肥30000 kg/hm^(2) (M1)、有机肥30000 kg/hm^(2)+化肥氮138 kg/hm^(2)(M1N1)、过量化肥氮276 kg/hm^(2) (N2)、过量有机肥60000 kg/hm^(2) (M2)、有机肥30000 kg/hm^(2)+化肥氮276 kg/hm^(2)(M1N2)、有机肥60000 kg/hm^(2)+化肥氮138 kg/hm^(2) (M2N1)、有机肥60000 kg/hm^(2)+化肥氮276 kg/hm^(2) (M2N2),其中N1和M1为等氮量处理,N2和M2为等氮量处理。于2021年小麦成熟期,取籽粒样测定了籽粒营养与加工品质指标。【结果】适量氮肥显著提高了小麦籽粒Fe、粗蛋白、干湿面筋含量,提高出粉率,且化肥的提升效果优于有机肥。N2显著降低了小麦淀粉含量,影响糊化特性;M2处理小麦籽粒各项品质指标较M1得到提升,糊化特性也得到相应改善。与单施化肥(N1、N2)、有机肥(M1、M2)相比,M2N1显著改善了小麦籽粒品质,M2N1与CK相比分别提高Fe (34.26%)、Zn (19.77%)、出粉率(7.98%)、粗蛋白含量(30.75%)、淀粉含量(12.82%)、峰值黏度(24.93%)、崩解值(14.81%)、回复值(27.64%)。相比于M2N1,M2N2则降低了Zn含量、出粉率、容重、粗蛋白、淀粉含量、糊化特性。相关性分析显示,面粉中支链淀粉、总淀粉、支链淀粉/直链淀粉与峰值黏度、谷值黏度、最终黏度呈极显著正相关,容重、硬度与峰值黏度、谷值黏度呈极显著负相关,直链淀粉与峰值黏度、谷值黏度、最终黏度呈负相关。【结论】单施化肥可以显著提升小麦出粉率、蛋白质和面筋含量等品质,单施有机肥改善小麦面粉淀粉含量和糊化特性的效果更好,有机肥与氮肥配施可同时提升小麦的营养和加工品质,综合各项指标,最有利于小麦品质的施肥措施为年施有机肥60000 kg/hm^(2)+化肥氮138 kg/hm^(2)。

关键词：强筋小麦有机无机肥配施微量元素磨粉品质淀粉特性

In vitro expression of gelatinases in reconstructed melanoma model composited MV3 cells

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Chinese Medical Journal 2013年第16期126卷 3196-3197页

作者： L(U) yu zhang Wei lu Hong-guang Department of Dermatology Affiliated Hospital of Guiyang Medical UniversityGuiyang Guizhou 550001 China

To the editor：It has been known that invasion and metastasis of skin melanoma in situ is a complex multi-step process involving in the interaction between melanoma cells and the adjacent stromal cells and basement membrane （BM）.1 Over the years,the process of melanoma invasion from epidermis to dermis was observed using animal models or human cutaneous melanoma lesions removed.2,3As for the deleted human pathological specimens,it is difficult to completely restore invasion system in ***,experimental animal is subjected to a damage or death in animal *** the animal in vivo,it contains various indefinite factors to influence tumor-cell invasion and *** the general enhance on awareness of animal protection,organized and realistic artificial tumor model is an acceptable alternative to animal melanoma research in this field,which is an important progress in observing skin melanoma *** in vitro reconstructed melanoma models made by different melanoma cell lines cultured on dermal substitute *** matrices were reported to study melanoma invasion.1 For instance,Eves et al4 reported that melanoma cells with invasive growth on acellular dermis expressed gelatinases （MMP-2,MMP-9）.However,both invasive behavior of melanoma cells and those proteases activity correlated with the invasion seem wide variations in different melanoma cell lines.4 Hence,more experiments on invasion assay in those models would be required in this field.

关键词： expression gelatinases reconstructed

Evolution mechanism of crystallographic orientation in grain continuator bars of a Ni-based single-crystal superalloy prepared by Bridgman technology during directional solidification

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China Foundry 2022年第1期19卷 35-45页

作者： Jiu-han Xiao Wei-guo Jiang Dong-yu Han Kai-wen Li Guo-jun Tong yu-zhang lu Lang-hong Lou Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Weifang University of Science and Technology Shouguang 262700ShandongChina Powerplant Engineering Technical Managements Division Shenyang Maintenance&Overhaul Base China Southern AirlinesShenyang 110000China

Single-crystal rods with different diameters and deviation angles with respect to the solidification direction were produced by Bridgman rapid solidification method at withdrawal rates of 3 and 6 mm·min^(-1) and used as grain *** crystallographic orientation of the rods,which cross-sections were perpendicular to the solidification direction at different solidification heights,was measured by electron backscattered diffraction,while the corresponding microstructures were observed by optical *** mushy zone morphology and the distribution of the temperature gradient were simulated by the finite element analysis software *** experimental results indicate that the crystallographic orientation of the single-crystal rods corresponds to the statistical average value of all the dendrite orientations in *** crystallographic orientation of the primary and secondary dendrites of each single-crystal rod at different cross-sections fluctuates irregularly within a small range(less than 4°).The crystallographic orientation of the dendrite in each single-crystal rod is not exactly consistent with each other and is affected by their branching mode of dendrites in the solidification *** addition,the simulation results show that the mushy zone shapes and the temperature gradient of single-crystal rods change with the increase of solidification height during the solidification ***,the evolution mechanism of the crystallographic orientations and the corresponding influence factors were analyzed and discussed.

关键词： single-crystal superalloy dendrite growth orientation evolution solidification space withdrawal rate cross-section size

Numerical simulation of transient characteristics in a bulb turbine during the load rejection process

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Journal of Hydrodynamics 2024年第1期36卷 170-183页

作者： yue lu yu-quan zhang Zhong-wei He yuan Zheng College of Water Conservancy and Hydropower Engineering Hohai UniversityNanjing210098China College of Energy and Electrical Engineering Hohai UniversityNanjing210098China Huadong Engineering Corporation Ltd. Hangzhou311122China

To evaluate the safety of the bulb tubular turbine,the dynamic hydraulic characteristics of a hydropower station system during the load rejection process are studied through numerical simulations and a prototype *** the developed model,a dynamic grid technology(DGT)controls the closure of the guide vane and the blade,whilst the moment balance equation and the user-defined function(UDF)provide the runner’s rotation *** 3-D transient simulation method can well predict the rotation speed and mass flow curves in the state of load *** simulation outcomes of the system performance are basically consistent with the measurement data of the *** observed,the runner is subjected to the reversely increased torque and axial force,the system is in a braking phase,and the maximum speed peaks at 144.6%of the rated ***,the internal flow of the runner is greatly affected by the closure of the guide vane,and the draft tube forms an eccentric spiral vortex *** breaks downstream,aggravating the instability of the draft ***,the transient characteristics span for the first five seconds,demonstrating the importance of establishing an efficient governing *** obtained results are useful for designing the turbine’s flow channel with a double regulating function and comprehending the turbine’s transient characteristics.

关键词： Bulb tubular turbine load rejection numerical simulation dynamic grid prototype test

Segregation of binary particles in gas-solid fluidized bed

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Frontiers of Chemical Science and Engineering 2024年第6期18卷 113-121页

作者： Yaxiong yu Feng lu Xuan He Fei Wei Chenxi zhang Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China School of Chemical Engineering and Technology Xi’an Jiaotong UniversityXi’an 710049China Ordos Laboratory Ordos 017010China Institute for Carbon Neutrality Tsinghua UniversityBeijing 100084China

Particle segregation and mixing behavior play a crucial role in industrial *** study investigates the saturated jetsam fraction,which indicates the maximum capacity of flotsam to entrain jetsam,in an initially separated binary fluidized bed with particle size *** to the value of saturated jetsam fraction,three distinct regimes-segregation,mixing,and an intermediate regime-are ***,intriguing relationships between the saturated jetsam fraction and superficial gas velocity are observed,exhibiting monotonic trends in both the segregation and mixing regimes,while a unique volcano-shaped curve in the intermediate ***,a comprehensive entrainment model based on two-fluid model elucidates the observed phenomena,emphasizing the significance of mixing behavior in fluidized layer on the saturated jetsam *** work offers potential insights for evaluating segregation in industrial applications.

关键词： fluidized bed segregation binary bubbles entrainment