Results 81 to 90 of about 460,018 (294)
Sustainable Development, 2017 本文介绍了秦皇岛柳江盆地的整体状况及旅游资源，并采用城市引力模型，从实际数据角度分析了秦皇岛柳江盆地的潜在游客来源，同时根据实际情况对柳江盆地旅游业的发展提出了一定的建议。在分析模型数据的基础上进一步说明柳江盆地旅游资源的发展潜力，为人居环境提出一定的建设性意见。 The paper introduces the overall situation of Qinhuangdao Liujiang river basin and the tourism resources, and the urban gravity model is adopted.
openaire +1 more source
Advanced Engineering Materials, EarlyView.A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm +3 more
wiley +1 more source
Development of a Natural Laboratory for the Study of Acid Mine Drainage [PDF]
, 1968 A small drift mine in Vinton County, Ohio, has been characterized and instrumented to permit a detailed study of the influence of oxygen concentration, microgiological factors, and hydrologic features on rate of pyrite oxidation within the system.
Smith, E. E., Shumate, K. S.
core
High-Spatial-Resolution Helium Detection and Its Implications for Helium Accumulation Mechanisms
Applied SciencesHelium is a scarce strategic resource. Currently, all economically valuable helium resources are found in natural gas reservoirs. Owing to helium’s different formation and migration processes compared to natural gas’s, the traditional method of ...
Chao Lu +5 more
doaj +1 more source
Performance Analysis of Abradable Coating Systems for Aircraft Gas Turbines
Advanced Engineering Materials, EarlyView.Three CoNiCrAlY/YSZ/MgAl2O4 abradable liner configurations on a nickel‐superalloy are evaluated by thermal‐gradient cycling and incursion tests. Laser ablation of the bondcoat and/or Y2O3‐stabilized ZrO2 (YSZ) intermediate layer increases mechanical interlocking and bonding for thick topcoats.
Hanna Heyl +4 more
wiley +1 more source
Eutrophication: A Mathematical Model [PDF]
, 1973 This report constitutes the Master of Science thesis of the same title completed by the author in May, 1973, and accepted by the Department of Systems and Industrial Engineering.
Friedman, Joel Herbert
core
Removal of Tetracycline from Synthetic Solution by Natural LECA
Muhandisī-i Bihdāsht-i Muḥīṭ, 2014 Background: Antibiotic in environment can be accumulated in soil and sediment and then adversely affect the ecosystem function as well as decrease the natural degradation rate of pollutants by producing a antibiotic-resistant microorganisms.
Mohammad Noori Sepehr +3 more
doaj
Infection Prevention in PracticeVentilation remains an important component of infection prevention and control programmes. Natural ventilation, as the most affordable measure to control airborne transmission of pathogens, is a crucial area of focus. However, applying natural ventilation encounters challenges in routine practice, especially in emergencies.
Dolynska, M. +5 more
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Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales
Advanced Engineering Materials, EarlyView.Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik +7 more
wiley +1 more source
Effects of suspended solids on selected estuarine plankton [PDF]
, 1976 Source: https://erdc-library.erdc.dren.mil/jspui/A 3-year laboratory study identified biological components of selected populations of estuarine organisms which were most sensitive to the effects of particle size and concentration of (a) suspended ...
J. M. O'Connor +7 more
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