992 resultados para 184-1143C
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Presentación (p. 9-27). Index Verborum (p.65-89). Letra "P" (extraido del CD-Rom, p.1-184)
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Santamaría, José Miguel; Pajares, Eterio; Olsen, Vickie; Merino, Raquel; Eguíluz, Federico (eds.)
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本书阐明了板壳断裂理论的基础。论证了Reissner型板壳断裂理论的科学性、经典板壳断裂理论的缺陷及在一定范围内仍具有的实用价值;介绍了作者所创意的研究Reissner型板壳断裂纹尖端场的方法等。
目录
- §1.1 板壳弯曲断裂问题
- §1.2 Kirchhoff经典板壳弯曲断裂理论
- §1.3 Reissner型板壳弯曲断裂理论
- §1.4 Kirchhoff与Reissner型板壳弯曲断裂理论的比较
- §1.5 含裂纹有限尺寸板壳断裂分析的局部-整体法
- §1.6 含表面裂纹板壳
- §2.1 Kirchhoff板的基本概念和基本假定
- §2.2 基本公式与弹性曲面微分方程
- §2.3 边界条件
- §2.4 弹性薄板的应变能
- §2.5 极坐标下的挠曲面微分方程与内力公式
- §2.6 裂纹尖端场特征展开式通项公式
- §2.7 Kirchhoff板弯曲应力强度因子
- §3.1 基本方程和公式的复变函数表示
- §3.2 所引入函数的确定程度与一般形式
- §3.3 坐标变换与边界条件
- §3.4 运用保角变换方法求解孔口问题
- §3.5 应力强度因子与函数Φ(z)的关系
- §3.6 复变-主部分析法之应用简例
- §3.7 共直线裂纹问题的一般解答
- §3.8 典型弯曲裂纹问题的解答及弯曲应力强度因子公式
- §3.9 共圆曲线裂纹问题的解答及弯曲应力强度因子公式
- §4.1 裂纹尖端奇异元的位移模式与弯曲应力强度因子
- §4.2 裂纹尖端奇异元的刚度矩阵
- §4.3 裂纹尖端奇异元与常规单元的连接
- §4.4 解析法与数值法的结果比较与讨论
- §4.5 两共线半无限裂纹问题的定解条件及解的实用价值
- §5.1 Reissner型板的基本假定
- §5.2 Reissner型板的基本公式与平衡微分方程
- §5.3 基本方程的简化
- §5.4 边界条件
- §5.5 极坐标下的基本公式与平衡微分方程
- §5.6 两种平板理论用于无裂纹板时的比较
- §5.7 两种乎板理论用于含裂纹板时的比较
- §6.1 基本方程和一般求解方法
- §9.1 局部-整体法与其它解析和数值法的结果比较
- §9.2 边界对应力强度因子的影响
- §9.3 板的支承条件及长宽比的影响
- §9.5 计算Reissner型板应力强度因子的一组近似方程与近似解法
- §9.4 Reissner型板理论与Kirchhoff板理论所得应力强度因子的比较
- §9.6 关于数值计算的几点讨论
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In 1998, the National Marine Fisheries Service (NMFS) began a series of marine angler expenditure surveys in the coastal regions of the United States (U.S.) to evaluate marine recreational fishing expenditures and the financial impacts of these expenditures in each region and the U.S. as a whole. In this report, we use the previously estimated expenditure estimates to assess the total financial impact of anglers’ saltwater expenditures. Estimates are provided for sales, income, employment, and tax impacts for each coastal state in the U.S. Aggregate estimates are also provided for the entire U.S., excluding Alaska, Hawaii, and Texas. Direct, indirect, and induced effects associated with resident and non-resident angler expenditures were estimated using a regional input-output modeling system called IMPLAN Pro. Nationwide, recreational saltwater fishing generated over $30.5 billion in sales in 2000, nearly $12.0 billion in income, and supported nearly 350,000 jobs. Approximately 89 cents of every dollar spent by saltwater anglers was estimated to remain within the U.S. economy. At the state level, many of the goods anglers purchased were imports, and, as such, as little as 44 cents of every dollar stayed in Rhode Island and as much as 80 cents of every dollar stayed in Georgia. In the Northeast, the highest impacts were generated in New Jersey, even though recreational fishing expenditures in Massachusetts and Maryland were considerably higher. In the Southeast, the highest impacts were generated in Florida, and on the Pacific Coast, the highest impacts were generated in California. Expenditures on boat maintenance/expenses generated more impacts than any other expenditure category in the U.S. Expenditures on rods and reels was the single most important expense category in terms of generating impacts in most of the Northeast states. Expenditures on boat expenses generated the highest in most Southeast states, and expenditures for boat accessories produced the highest impacts in most Pacific Coast states.(PDF file contains 184 pages.)
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目录
- 1.1 化合物的生成焓,反应焓及燃烧热
- 1.2 热化学定律
- 1.3 热力学平衡与自由能,化学平衡与反应自由能
- 1.4 质量作用定律及可逆反应的平衡常数
- 1.5 平衡常数和标准反应自由能的关系
- 1.6 温度和压力对平衡常数的影响
- 1.7 绝热火焰温度计算
- 1.8 化学动力学中采用的几个基本概念和定义
- 1.9 反应的分类
- 1.10 阿累尼乌斯(Arrhenius)定律
- 1.11 双分子反应碰撞理论
- 1.12 反应分子数及反应级数
- 1.13 影响化学反应的因素
- 1.14 链锁反应
- 5.1 燃烧波的两种形式――缓燃(或火焰正常传播)及爆震
- 5.3 马兰特和利-恰及利耶的简化分析法
- 5.4 层流火焰传播速度的无量纲分析法
- 5.5 泽尔多维奇和弗朗克-卡门涅茨基的分区近似解
- 5.6 分区近似解的改进
- 5.7 精确解
- 5.8 物理化学参数对S1的影响及对火焰厚度的影响
- 5.9 火焰传播界限
- 5.10 用层流火焰传播速度计算化学动力参数的方法
- 5.11 火焰的基本性质及火焰的几何学
- 5.12 本生灯火焰稳定的条件
- 5.13 层流火焰传播速度的实验测定
- 5.14 单组元燃料滴燃烧
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The present study was designed to examine the following: (1) the taxonomic. spatial, and temporal patterns of availability of all invertebrate species associated with Macrocystis (excluding protozoans and nematodes); (2) the utilization of this invertebrate assemblage as food by kelp forest fishes within the Macrocystis "foliage- searching" feeding guild, as well as proximal mechanisms leading to observed patterns of resource partitioning; and (3) the dynamic relationship between availability and utilization of this food resource. The approach was largely descriptive. with observations collected during a 19-month period from June 1975 to December 1976. Chapter I is an investigation of the resource utilization patterns of four species of kelp forest fishes with respect to food-related resource dimensions. and tests aspects of current theory involving inter- and intraspecific competition. Chapter II is a detailed examination of the invertebrate assemblage associated with Macrocystis and presents life histories of the fishes examined during this study. (PDFs contains 387 pages, chapter 1 is 203 pages, chapter 2 is 184 pages)
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Este artículo trata sobre las prácticas en empresas. En el caso de la Escuela Universitaria de Estudios Empresariales de San Sebastián son voluntarias. Este carácter facultativo imprime un doble carácter a estas prácticas: por una parte, toda persona que manifiesta su deseo de hacer una práctica es consciente de que su consecución representa un acto de opción por cuanto que precisará de un determinado número de horas en su desarrollo, y por otra, directamente relacionada con la anterior, la convicción de que, entre varias alternativas la de las prácticas, es una vía que les ayuda en su proceso de formación.
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Versão PDF.
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Constituintes negros formam uma delegação para visita à Africa do Sul observar as condições de segregação da população negra daquele país, o Aparthaid. A visita seria realizada no intervalo entre o primeiro e o segundo turno de votação. A Constituinte retoma a votação do título VI da futura Carta, que trata do Sistema Tributário no país. Foi votada a contribuição de melhoria. Cada Município vai poder cobrar dos interessados uma contribuição para obras de melhorias, como asfalto de rua, pontes e estradas. O tema polêmico da Sessão foi o parágrafo primeiro do artigo 184, que permite a estados e municípios, a cobrança de 5% sobre o imposto de renda que incidir em ganhos de capital, para fazer face a obras estaduais e municipais. Presidente da Constituinte fez um balanço dos dispositivos votados e faz apelo para que todos estejam presentes nas sessões subsequentes.
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Antonio Duplá Ansuategui, Piedad Frías Nogales e Iban Zaldúa (editores)
BECPELAG: Ein internationaler Workshop über biologische Schadstoffeffekte in pelagischen Ökosystemen
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Im Februar 2001 begann unter der Schirmherrschaft des Internationalen Rates für Meeresforschung (ICES) und der Ozeanographie Kommission der UNESCO (IOC) der internationale Workshop Biological Effects of Contaminants in Pelagic Ecosystems, BECPELAG mit folgenden Zielen: • Untersuchungen über das Auftreten biologischer Effekte von Umweltschadstoffen auf Meeresorganismen in der Freiwasserzone (Pelagial) der Nordsee • Überprüfung von Methoden zur Erkennung von biologischen Schadstoffeffekten in pelagischen Organismen auf ihre Eignung für zukünftige Überwachungsprogramme