Results 51 to 60 of about 1,762 (207)
Setting the census household into its urban context: Visualizations from 19th-century Montreal
Background: Organized by household, North American census data promoted research into household composition, but discouraged research into connections between urban households.
Sherry Olson
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ABSTRACT Several specific primers based on the internal transcribed spacer (ITS) region of rDNA have been used to discriminate anastomosis groups (AGs) and subgroups in Rhizoctonia solani, but the efficacy of these primers was not evaluated considering several known AGs.
Lucas Correia Santana Amancio +6 more
wiley +1 more source
I GIS come strumento di ricerca: applicazioni metodologiche sull’Atlante Storico di Cingoli
in italiano Il contributo esamina l’applicazione metodologica dei Geographic Information System (GIS) e degli Historical GIS (HGIS) nell’elaborazione dell’Atlante Storico di Cingoli, sviluppato entro il quadro teorico e operativo definito dalla ...
Lorenzo Virgini, Diego Borghi
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Numerical Computation of Flapping-Wing Propulsion and Power Extraction [PDF]
AIAA Paper No. 97-0826, 35th AIAA Aerospace Sciences Meeting, Reno, Nevada, Jan. 1997.Numerical procedures are presented for the systematic computation of unsteady flows over moving airfoils or airfoil combinations, and these procedures are applied to ...
Jones, K.D., Platzer, M.F.
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Atmospheric Tides in the Thermosphere: Forcing From Above Versus Forcing From Below
Abstract This study investigates the relative importance of lower atmospheric versus in situ forcing in driving migrating and nonmigrating diurnal and semidiurnal tides in the thermosphere, as well as the impact of solar and geomagnetic activity on these tides. Our focus is the “thermospheric gap” region 110–250 km, where few observations are available
Mukta Neogi +3 more
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HGI, l' herbari de la Universitat de Girona
Descripció de l'herbari de la Universitat de Girona, fundat l'any 1976 pel Dr.
Font, Joan +3 more
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Recent improvements in HgI/sub 2/ detectors
Development of mercuric iodide nuclear detectors in our laboratory has concentrated on crystalline perfection, optimization of electronic properties, and device fabrication. Increased crystalline perfection can be obtained with better crystal growth temperature control combined with slightly modified growth parameters.
L. van den Berg, R. Whited
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Role of Dietary Carbohydrates in Cognitive Function: A Review
The review will focus on the intricate relationship between brain function and carbohydrate intake, emphasizing how different types of carbohydrates impact mental health and cognitive outcomes. We look at how carbohydrates impact brain energy metabolism, specifically how the brain utilizes glucose as the primary fuel source and how consuming too little
Muhammad Tayyab Arshad +6 more
wiley +1 more source
笔者针对一起500 kV HGIS故障,通过能谱、热重等检测手段,分析了故障气室相关盆式绝缘子的物理化学特性;通过水压强度试验,检测了故障气室相关盆式绝缘子的机械强度变化情况,从而查明HGIS设备故障的根本原因主要来自两个方面:①盆式绝缘子制造过程中,制造厂没有严格执行绝缘件材料(环氧树脂、固化剂、三氧化二铝)的理论配方,或绝缘件材料中存在微量杂质,影响了盆式绝缘子的整体质量;②盆式绝缘子抗机械老化能力不足,在持续机械应力作用下,产生细微裂纹等缺陷,在高强电场的进一步作用下,不断劣化最终形成故障。最后 ...
晏年平 +3 more
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针对某变电站110 kV HGIS设备多次出现的异响及局部放电异常现象,结合局部放电超声波检测、局放典型图谱分析、SF6气体成分分析、粉末成分分析及解体过程情况,分析得出是HGIS内部悬浮电位放电引起,其原因为传动轴和绝缘子嵌件内槽尺寸设计为过渡配合且传动轴侧绝缘子挡板采用非固定设计,为设计原因引起的设备家族性缺陷。在分析该HGIS设备家族缺陷特征信息后,提出了下一步处理及预防措施,可为气体绝缘金属封闭组合电器设备管理、家族缺陷认定提供参考与借鉴。
李劲彬 +5 more
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