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某院ICU病区主要病原菌及耐药性探析 认领 被引量:1
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作者 王静 阳央 李芳芹 《临床医学进展》 2018年第8期702-707,共6页
目的:掌握我院ICU病区主要病原菌的种类及耐药性,进一步帮助ICU尽早抗感染治疗和防控院内感染。方法:对ICU病区常规送检标本分离培养,用VITEK2 COMPACT型全自动微生物分析仪及配套鉴定卡和药敏卡进行细菌鉴定和药敏实验。结果:3年内共分... 目的:掌握我院ICU病区主要病原菌的种类及耐药性,进一步帮助ICU尽早抗感染治疗和防控院内感染。方法:对ICU病区常规送检标本分离培养,用VITEK2 COMPACT型全自动微生物分析仪及配套鉴定卡和药敏卡进行细菌鉴定和药敏实验。结果:3年内共分离ICU病区中病原菌338例,其中分离G?菌265例,占78.4%,G+菌36株,占10.7%,真菌37株,占10.9%。G-菌中鲍曼不动杆菌占37.3%,对大部分药物的耐药率均 ≥ 70%;革兰阳性菌中金黄色葡萄球菌占50.0%,对万古霉素敏感;白色念珠菌占75.7%,对大部分抗真菌药物呈高敏感。结论:ICU病区的病原菌以G-为最常见,其中鲍曼不动杆菌为主要病原菌,对头孢菌素、氨基糖苷类、β-内酰胺类的耐药率高。 展开更多
关键词 ICU 主要病原菌 耐药性
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2例表现为急性延髓麻痹的儿童吉兰–巴雷综合征变异型及文献复习 认领
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作者 叶蓬艳 张颖 《临床医学进展》 2020年第7期1180-1185,共6页
目的:探讨儿童吉兰–巴雷综合征变异型的临床特点、诊断和治疗。方法:分析青岛大学附属医院儿科2例吉兰–巴雷综合征变异型患儿的临床表现、相关辅助检查结果以及临床治疗效果。结果:临床表现为言语含糊、饮水呛咳、吞咽困难,外周神经... 目的:探讨儿童吉兰–巴雷综合征变异型的临床特点、诊断和治疗。方法:分析青岛大学附属医院儿科2例吉兰–巴雷综合征变异型患儿的临床表现、相关辅助检查结果以及临床治疗效果。结果:临床表现为言语含糊、饮水呛咳、吞咽困难,外周神经病神经节苷脂抗体分别为抗GM1_IgM抗体阳性及抗GM4 IgG抗体阳性,脑脊液检查未见明显蛋白–细胞分离现象。肌电图示神经源性损害。2例均给予静滴免疫球蛋白治疗后症状明显好转。结论:急性延髓麻痹是吉兰–巴雷综合征的少见变异型,极易出现漏诊和误诊,须结合临床表现、脑脊液、电生理和影像学检查及早做出诊断和治疗。 展开更多
关键词 吉兰巴雷综合征 急性延髓麻痹变异型
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WNT/β-Catenin信号通路在再生中的研究进展 认领
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作者 谢成浩 梁宇君 《海洋科学前沿》 2017年第4期111-117,共7页
WNT/β-catenin信号通路是一组进化性保守的信号,其在多种物种的胚胎发育以及再生中都发挥着重要的作用。本文综述了最近对WNT/β-catenin信号通路在多种脊椎动物器官损伤中作用的理解。在斑马鱼的视网膜和侧线再生,两栖动物的附肢再生... WNT/β-catenin信号通路是一组进化性保守的信号,其在多种物种的胚胎发育以及再生中都发挥着重要的作用。本文综述了最近对WNT/β-catenin信号通路在多种脊椎动物器官损伤中作用的理解。在斑马鱼的视网膜和侧线再生,两栖动物的附肢再生以及小鼠中视网膜、生长板和前列腺再生中,此信号通路都发挥着至关重要的作用。 展开更多
关键词 WNT/Β-CATENIN信号通路 再生 斑马鱼 小鼠
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攻击行为的大脑时空机制:ERP和fMRI研究进展 认领
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作者 滕召军 刘衍玲 +1 位作者 潘彦谷 尧德中 《心理学进展》 2013年第6期313-320,共8页
攻击行为在人类社会中非常普遍,社会心理学家把攻击行为定义为,个体蓄意给他人身体或心理带来某种伤害,并且知觉到这种伤害的行为(Anderson &Bushman, 2002)。利用ERP和fMRI技术研究攻击行为的神经机制发现:1) 攻击行为的过程反应... 攻击行为在人类社会中非常普遍,社会心理学家把攻击行为定义为,个体蓄意给他人身体或心理带来某种伤害,并且知觉到这种伤害的行为(Anderson &Bushman, 2002)。利用ERP和fMRI技术研究攻击行为的神经机制发现:1) 攻击行为的过程反应主要体现在早期诱发50 ms左右出现的听觉P50波,中期对错误刺激监测的错误相关负波(ERN),以及晚期P300波等ERP成分;2) 攻击行为的神经基础涉及前额叶(PFC)、前扣带回(ACC)、杏仁核(Amygdala)和下丘脑(Hypothalamus)等大脑空间结构。整合这些研究可以发现,攻击行为的脑电反应过程可能是自下而上,而神经基础可能是是自上而下的加工过程。未来要进一步比较动物攻击行为和人类攻击行为的神经机制模型差异,整合ERP和fMRI研究以及设计实验探测工具性攻击行为的神经机制。 展开更多
关键词 攻击行为 ERP FMRI
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一例伴有幻觉的抑郁症患者的沙盘游戏案例分析 认领
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作者 张照 刘衔华 《心理学进展》 2018年第10期1438-1451,共14页
目的:通过分析一例伴有幻觉的中度抑郁症患者的沙盘游戏过程和特征,探讨其抑郁症症状产生的心理原因,并解析幻觉的涵义。方法:对1名伴有幻觉的中度抑郁症患者进行了7个月共13次个体沙盘游戏治疗。结果:患者的幻觉和抑郁症状基本消失。结... 目的:通过分析一例伴有幻觉的中度抑郁症患者的沙盘游戏过程和特征,探讨其抑郁症症状产生的心理原因,并解析幻觉的涵义。方法:对1名伴有幻觉的中度抑郁症患者进行了7个月共13次个体沙盘游戏治疗。结果:患者的幻觉和抑郁症状基本消失。结论:沙盘游戏疗法对伴有幻觉的抑郁症有一定的疗效,能帮助解析幻觉。幻觉内容应当受到重视。 展开更多
关键词 沙盘游戏 抑郁症 幻觉 个案法
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深圳市养老机构服务质量的现状及影响因素研究 认领 被引量:1
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作者 赵霞 张丹 +2 位作者 王素娟 王睿 苏永刚 《社会科学前沿》 2019年第10期1801-1809,共9页
目的:分析养老机构服务质量的现状及影响因素。方法:采取便利取样法对深圳市养老机构217位老年人进行问卷调查,采用SERVQL量表评估老年人的感知服务质量、期望服务质量及服务质量满意度。结果:感知服务水平与期望服务水平的差值为?7.91... 目的:分析养老机构服务质量的现状及影响因素。方法:采取便利取样法对深圳市养老机构217位老年人进行问卷调查,采用SERVQL量表评估老年人的感知服务质量、期望服务质量及服务质量满意度。结果:感知服务水平与期望服务水平的差值为?7.91,低于0分,代表老年人整体上对养老机构的服务质量不满意。老年人的婚姻状况(β = ?0.325, P 【0.01)、居住情况(β = ?0.187, P = 0.013)及领悟社会支持水平(β = 0.440, P 【0.001)是服务质量评价的影响因素,其他因素无统计学意义。结论:老年人整体上对养老机构的服务质量不满意,婚姻状况、居住情况及领悟社会支持水平是服务质量评价的影响因素。 展开更多
关键词 养老机构 服务质量 社会支持
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一氧化氮和天然抗氧化剂对阿尔茨海默症的潜在防治作用 认领
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作者 陈梦媛 张娟 +4 位作者 李超 张智贤 徐力 刘强 赵燕 《食品与营养科学》 2016年第3期105-113,共9页
本文以转基因细胞和线虫体系为模型,研究了一氧化氮(nitric oxide, NO)和天然抗氧化剂的合理搭配组合对阿尔茨海默症(Alzheimer’s disease, AD)的防治作用。结果发现,低浓度的NO可以通过降低细胞内活性氧的水平保护神经细胞,防止APPsw... 本文以转基因细胞和线虫体系为模型,研究了一氧化氮(nitric oxide, NO)和天然抗氧化剂的合理搭配组合对阿尔茨海默症(Alzheimer’s disease, AD)的防治作用。结果发现,低浓度的NO可以通过降低细胞内活性氧的水平保护神经细胞,防止APPsw和ApoE4过量表达引起的损伤作用;而高浓度的NO可以通过增强活性氧(reactive oxygen species, ROS)的产生加剧神经细胞损伤。适量NO和天然抗氧化剂都对Abeta转基因诱导的线虫瘫痪行为具有抑制作用。NO和天然抗氧化剂的合理搭配组合既可以通过显著清除ROS抑制ApoE4和APPsw转基因引起的细胞活力降低,又可以更好的延缓Abeta转基因诱导的线虫瘫痪行为。这些结果说明,NO和天然抗氧化剂合理搭配可以在AD细胞和线虫模型中抑制转基因引起的细胞和线虫的损伤,有可能对AD具有一定的防治作用。 展开更多
关键词 一氧化氮 天然抗氧化剂 阿尔茨海默症 活性氧
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加速康复外科护理在老年胃十二指肠溃疡急诊胃大部切除术的护理效果 认领
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作者 刘伟伟 黄健 孙海燕 《护理学》 2017年第2期65-70,共6页
目的:观察加速康复外科护理在老年胃十二指肠溃疡急诊胃大部切除术的护理效果。方法:入选2013年10月至2015年10月于我院行胃十二指肠溃疡急诊胃大部切除术的老年患者128例,随机分为对照组和观察组,对照组60例患者采用传统的胃大部切除... 目的:观察加速康复外科护理在老年胃十二指肠溃疡急诊胃大部切除术的护理效果。方法:入选2013年10月至2015年10月于我院行胃十二指肠溃疡急诊胃大部切除术的老年患者128例,随机分为对照组和观察组,对照组60例患者采用传统的胃大部切除术护理措施,观察组68例患者采用加速康复外科护理干预。观察比较两组术后恢复情况、并发症发生及平均住院时间。结果:观察组患者术后肠鸣音恢复时间、首次排气排便时间、体重下降情况、静脉营养时间及平均住院天数均明显低于对照组(P均 <0.01);观察组术后并发症11例(16.18%),明显低于对照组18例(30%),差异具有显著统计学意义(P <0.05)。结论: 老年胃十二指肠溃疡急诊胃大部切除后行加速康复外科护理,明显降低术后并发症,促进患者恢复,值得临床应用及推广。 展开更多
关键词 加速康复外科护理 胃十二指肠溃疡 胃大部切除术 老年
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录像播放对护生技能考试焦虑水平的效果与分析 认领
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作者 钱晓路 李以睿 +3 位作者 吴明 林岑 来小彬 陈暐 《护理学》 2018年第6期257-262,共6页
目的:评价考试前播放技能录像对缓解考生技能操作考试焦虑的效果。方法:采用方便抽样法,选取进入《护理学基础》课程学习,且为第一次参加技能操作考核的2016级护理本科生共90名作为研究对象,分为对照组44名和实验组46名考生,对照组采用... 目的:评价考试前播放技能录像对缓解考生技能操作考试焦虑的效果。方法:采用方便抽样法,选取进入《护理学基础》课程学习,且为第一次参加技能操作考核的2016级护理本科生共90名作为研究对象,分为对照组44名和实验组46名考生,对照组采用常规考前安排,实验组采用考前观看编辑的技能操作录像,并用TAS量表、考试成绩等评价两组的效果。结果:对照组考生干预前后和实验组考生干预前中、高焦虑水平人数占比都达到了75%以上。对照组干预前后焦虑量表得分分别为17.93 &#177;6.86和19.05 &#177;5.41;实验组干预前后得分分别为17.29 &#177;4.952和14.04 &#177;4.64,实验组干预后的焦虑水平得分相比干预前有着显著的下降(p 0.05)。实验组的考试成绩高于对照组。结论:在《护理学基础》课程操作考试前播放操作视频能够缓解考生参加操作考试的焦虑程度。 展开更多
关键词 护生 技能考试 焦虑水平
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药物治疗胶质瘤相关机制研究进展 认领
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作者 张莹莹 童玥 《药物资讯》 2020年第2期78-84,共7页
胶质瘤恶性程度高,容易侵袭和转移,手术治疗、放射疗法和药物治疗是目前最常用的治疗方式,而由于胶质瘤易侵袭,病灶与周围正常组织边界不清晰,手术治疗很难将肿瘤病灶完全清除,放射疗法对身体伤害大,成本高,因此药物辅助治疗就显得尤为... 胶质瘤恶性程度高,容易侵袭和转移,手术治疗、放射疗法和药物治疗是目前最常用的治疗方式,而由于胶质瘤易侵袭,病灶与周围正常组织边界不清晰,手术治疗很难将肿瘤病灶完全清除,放射疗法对身体伤害大,成本高,因此药物辅助治疗就显得尤为重要。目前,研究中或已上市的针对胶质瘤的化疗药物或单抗类药物繁多,作用的靶点也不甚相同,本文就药物治疗胶质瘤最新的相关机制进行了综述。 展开更多
关键词 肿瘤侵袭 胶质瘤 肿瘤抑制剂
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分子靶向药物与肿瘤 认领 被引量:1
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作者 夏君燕 朱平 伍学强 《世界肿瘤研究》 2015年第4期65-73,共9页
依据已知肿瘤发生中涉及的异常分子或基因,设计针对这些特定分子和基因靶点的药物,选择性杀伤肿瘤细胞,这种治疗方法称为肿瘤的分子靶向治疗。目前分子靶向药物用于治疗乳腺癌、非小细胞肺癌、结直肠癌以及淋巴瘤、白血病等恶性肿瘤已... 依据已知肿瘤发生中涉及的异常分子或基因,设计针对这些特定分子和基因靶点的药物,选择性杀伤肿瘤细胞,这种治疗方法称为肿瘤的分子靶向治疗。目前分子靶向药物用于治疗乳腺癌、非小细胞肺癌、结直肠癌以及淋巴瘤、白血病等恶性肿瘤已取得令人瞩目的疗效。针对现有的治疗恶性肿瘤的分子靶向药物的作一综述。 展开更多
关键词 乳腺癌 非小细胞肺癌 结直肠癌 血液肿瘤 靶向治疗
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Investigating Diesel Engine Performance and Emissions Using CFD 认领
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作者 Tarek M. Belal El Sayed M. Marzouk Mohsen M. Osman 《能源与动力工程(英文)》 2013年第2期171-180,共10页
Fluid flow in an internal combustion engine presents one of the most challenging fluid dynamics problems to model. This is because the flow is associated with large density variations. So, a detailed understanding of ... Fluid flow in an internal combustion engine presents one of the most challenging fluid dynamics problems to model. This is because the flow is associated with large density variations. So, a detailed understanding of the flow and combustion processes is required to improve performance and reduce emissions without compromising fuel economy. The simulation carried out in the present work to model DI diesel engine with bowl in piston for better understanding of the in cylinder gas motion with details of the combustion process that are essential in evaluating the effects of ingesting synthetic atmosphere on engine performance. This is needed for the course of developing a non-air recycle diesel with exhaust management system [1]. A simulation was carried out using computational fluid dynamics (CFD) code FLU- ENT. The turbulence and combustion processes are modeled with sufficient generality to include spray formation, delay period, chemical kinetics and on set of ignition. Results from the simulation compared well with that of experimental results. The model proved invaluable in obtaining details of the in cylinder flow patterns, combustion process and combustion species during the engine cycle. The results show that the model over predicting the maximum pressure peak by 6%, (p-θ), (p-v) diagrams for different engine loads are predicted. Also the study shows other engine parameters captured by the simulation such as engine emissions, fuel mass fraction, indicated gross work, ignition delay period and heat release rate. 展开更多
关键词 NUMERICAL Simulation UNSTEADY Flow COMBUSTION DIESEL ENGINE
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A Survey of Wind Power Ramp Forecasting 认领
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作者 Tinghui Ouyang Xiaoming Zha Liang Qin 《能源与动力工程(英文)》 2013年第4期368-372,共5页
At home and broad, more wind power is being installed in electricity markets, the influence brought by wind power become more important on power system stability, especially the fluctuation, the uncertainty in wind po... At home and broad, more wind power is being installed in electricity markets, the influence brought by wind power become more important on power system stability, especially the fluctuation, the uncertainty in wind power production and multi-time scale of the wind. In order to forecast ramp events before the power system encountering failure, so that the operator can adopt some limited controlling strategy. This paper introduces the present status of the wind power ramp prediction at home and abroad. And it gives out four kinds of definitions of ramp events, which are used by many scholars, then provides various forecasting error algorithm. In the aspect of prediction models, it comes up with physical models and statistical models, and enumerates various examples of different models. Finally, it prospects the tendency of the model improvement about the wind power ramp events forecasting, which would be significant for ramp research. 展开更多
关键词 RAMP EVENTS Forecasting PHYSICAL MODELS STATISTICAL MODELS
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The Effect of Initial Oxidation on Long-Term Oxidation of NiCoCrAlY Alloy 认领
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作者 Chao Zhu Xiaoyu Wu +1 位作者 Yuan Wu Gongying Liang 《工程(英文)(1947-3931)》 2010年第8期602-607,共6页
The initial oxidation behavior of Ni-6.5Co-17.8Cr-3.7Al-0.5Y alloy is investigated at 800°C-1000°C. X-ray diffraction results show that the dominant Cr2O3 phase and secondary α-Al2O3 and NiO phases are obse... The initial oxidation behavior of Ni-6.5Co-17.8Cr-3.7Al-0.5Y alloy is investigated at 800°C-1000°C. X-ray diffraction results show that the dominant Cr2O3 phase and secondary α-Al2O3 and NiO phases are observed on the surface of samples at all initial stages (oxidized for 16 hours). YAlO3 and θ-Al2O3 can only be detected at low temperature (800°C) while the spinel NiCr2O4 is only observed at 900°C and 1000°C. Though the growth rates of α-Al2O3 and Cr2O3 are comparable at 900°C, the former becomes much lower than the latter when the temperature changes to 1000°C. Scanning electron microscopy (SEM) images show that the α-Al2O3 grows from some irregular ditches in the chromia scale at 900°C. However, cracking and spalling are more serious at 1000°C without α-Al2O3-grown-ditches, which is in accordance with the growth rates of these oxides at different temperatures. The cracking can be explained by the results of Raman determination which indicate that the stress on the surface of specimen oxidized at 1000°C is higher than that at 900°C. Owing to this condition, a preoxidation treatment on the NiCoCrAlY alloy for 16 hours is prepared at 900°C, and then thermal cycling oxidation test is conducted at 1000°C for 200 hours. The result indicates that the initial preoxidation treatment at 900°C improves the oxidation resistance of alloy at 1000°C. 展开更多
关键词 NICOCRALY OXIDATION KINETICS INITIAL OXIDATION Al2O3 CR2O3
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A Kinetic Study of Anaerobic Biodegradation of Food and Fruit Residues during Biogas Generation Using Initial Rate Method 认领
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作者 William Wanasolo Samwel Victor Manyele John Makunza 《工程(英文)(1947-3931)》 2013年第7期577-586,共10页
A kinetic study of biogas production from Urban Solid Waste (USW) generated in Dar es Salaam city (Tanzania) is presented. An experimental bioreactor simulating mesophilic conditions of most USW landfills was develope... A kinetic study of biogas production from Urban Solid Waste (USW) generated in Dar es Salaam city (Tanzania) is presented. An experimental bioreactor simulating mesophilic conditions of most USW landfills was developed. The goal of the study was to generate the kinetic order of reaction with respect to biodegradable organic waste and use it to model biogas production from food residues mixed with fruit waste. Anaerobic biodegradation was employed under temperature range of 28℃ - 38℃. The main controls were leachate recirculation and pH adjustments to minimize acid inhibitory effects and accelerate waste biodegradation. The experimental setup comprised of three sets of bioreactors. A biodegradation rate law in differential form was proposed and the numerical values of kinetic order and rate constant were determined using initial rate method as 0.994 and 0.3093 mol0.006·day-1, respectively. Results obtained were consistent with that found in literature and model predictions were in reasonable agreement with experimental data. 展开更多
关键词 Urban and Municipal Solid WASTE BIOGAS Production Anaerobic Biodegradation MESOPHILIC Conditions Order of Reaction Kinetic Model INITIAL Rate Method Renewable Energy BIOREACTOR LANDFILL Biodegradable Organic WASTE
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New Approach for Limited-Angle Problems in Electron Microscope Based on Compressed Sensing 认领
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作者 Marc Vila Oliva Hamed Hamid Muhammed 《工程(英文)(1947-3931)》 2013年第10期575-578,共4页
New advances within the recently rediscovered field of Compressed Sensing (CS) have opened for a great variety of new possibilities in the field of image reconstruction and more specifically in medical image reconstru... New advances within the recently rediscovered field of Compressed Sensing (CS) have opened for a great variety of new possibilities in the field of image reconstruction and more specifically in medical image reconstruction. In this work, a new approach using a CS-based algorithm is proposed and used in order to solve limited-angle problems (LAPs), like the ones that typically occur in computed tomography or electron microscope. This approach is based on a variant of the Robbins-Monro stochastic approximation procedure, developed by Egaziarian, using regularization by a spatially adaptive filter. This proposal consists on filling the gaps of missing or unobserved data with random noise and enabling a spatially adaptive denoising filter to regularize the data and reveal the underlying topology. This method was tested on different 3D transmission electron microscope datasets that presented different missing data artifacts (e.g, wedge or cone shape). The test results show a great potential for solving LAPs using the proposed technique. 展开更多
关键词 Compressed SENSING Image RECONSTRUCTION Adaptive FILTERS LIMITED ANGLE Problem TEM
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Thermal Behavior of Externally Driven Spindle: Experimental Study and Modelling 认领
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作者 Christian Brecher Yair Shneor +2 位作者 Stephan Neus Kolja Bakarinow Marcel Fey 《工程(英文)(1947-3931)》 2015年第2期73-92,共20页
This paper focuses on model development for computer analysis of the thermal behavior of an externally driven spindle. The aim of the developed model is to enable efficient quantitative estimation of the thermal chara... This paper focuses on model development for computer analysis of the thermal behavior of an externally driven spindle. The aim of the developed model is to enable efficient quantitative estimation of the thermal characteristics of the main spindle unit in an early stage of the development process. The presented work includes an experimental validation of the simulation model using a custom-built test rig. Specifically, the effects of the heat generated in the bearings and the heat flux from the bearing to the adjacent spindle system elements are investigated. Simulation and experimental results are compared and demonstrate good accordance. The proposed model is a useful, efficient and validated tool for quantitative simulation of thermal behavior of a main spindle system. 展开更多
关键词 Machine TOOL Thermal Behavior Heat TRANSFER SPINDLE MODELLING
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Real-Time Detection of Unstable Control Loop Behavior in a Feedback Active Noise Cancellation System for In-Ear Headphones 认领
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作者 Sven Hö ber +1 位作者 Christian Pape Eduard Reithmeier 《工程(英文)(1947-3931)》 2015年第12期796-802,共7页
Active noise controls are used in a wide field of applications to cancel out unwanted surrounding noise. Control systems based on the feedback structure however have the disadvantage that they may become unstable duri... Active noise controls are used in a wide field of applications to cancel out unwanted surrounding noise. Control systems based on the feedback structure however have the disadvantage that they may become unstable during run-time due to changes in the control path—in this context including the listener’s ear. Especially when applied to active noise cancellation (ANC) headphones, the risk of instability is associated with the risk of harmful influence on the listener’s ear, which is exposed to the speaker in striking distance. This paper discusses several methods to enable the analysis of a feedback ANC system during run-time to immediately detect instability. Finally, a solution is proposed, which identifies the open loop behavior parametrically by means of an adaptive filter to subsequently evaluate the coefficients regarding stability. 展开更多
关键词 ACTIVE Noise Control FEEDBACK Stability REAL-TIME Analysis
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The Effectiveness of Different Methodologies in Gathering Information for Developing BIM Models to Support the Operation and Maintenance of Existing Buildings 认领
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作者 S. O. álvarez-Romero J. A. González-Fajardo +1 位作者 J. N. Zaragoza-Grifé S. A. Audeves-Pérez 《房屋建造与规划研究(英文)》 2018年第4期298-316,共19页
Systematic, preventive and corrective maintenance is essential for existing buildings in order to retain their original functionality and appearance and satisfy the needs of the users. Essential input for maintenance ... Systematic, preventive and corrective maintenance is essential for existing buildings in order to retain their original functionality and appearance and satisfy the needs of the users. Essential input for maintenance is information about buildings. This paper discusses the assessment of the advantages and limitations of using photogrammetry and a low-cost 3D scanner to collect information from existing buildings and create, through integrative software, BIM models as information systems to support the operation and maintenance functions. Also, these methodologies were compared with one another as well as with a manual information survey conducted at a university campus. The main conclusion is that a combination of methods must be used to obtain geometrical information on existing buildings for their operation and maintenance functions, depending on which ones are the most suitable for the case at hand. 展开更多
关键词 Photogrammetric SURVEYING 3D SCANNER SURVEYING BIM Building Operation and Maintenance
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Characterization of the Effect of Programmed Aeration on Energy Efficiency of Microalgae Cultivation System 认领
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作者 Robert Bocsi Dora Rippel-Petho +2 位作者 Geza Horvath Laszlo Hanak Zoltan Hodai 《世界工程和技术(英文)》 2017年第3期481-486,共6页
With autotrophic microalgae cultivation,?we can feed back the CO2?content of process streams and we can get lots of valuable organic compounds, among others biofuel components. For the production of energy source,we m... With autotrophic microalgae cultivation,?we can feed back the CO2?content of process streams and we can get lots of valuable organic compounds, among others biofuel components. For the production of energy source,we must reckon with the energy balance of the whole process. Densification and processing of microalgae can consume 50% - 70% of the energy that can be extracted from the cells,?therefore the cultivation should use such a little energy as it possible. In closed cultivation systems,?there are three main energy intensive steps: artificial illumination, dissolution of gas compounds and mixing. We have carried out our measurements in our lab-scale screening photobioreactor system for the investigation of the most energy effective program for aeration. We have found the aeration program considerable solution for lower energy consumption in?algae cultivation. 展开更多
关键词 ENERGY EFFICIENCY MICROALGAE CULTIVATION AERATION
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