Shallow landslides on steep (>25) hillsides along Puget Sound have resulted in occasional loss of life and costly damage to property during intense or prolonged rainfall. As part of a larger project to assess landslide hazards in the Seattle area, the U.S. Geological Survey instrumented two coastal bluff sites in 2001 to observe the subsurface hydrologic response to rainfall. The instrumentatio...

The municipalities of Ubatuba, Campos do Jordão, and São José dos Campos are located in the region of São Paulo State (Brazil). These municipalities are recognized nationally for having an elevated number of recorded landslides on slopes and embankments. In addition, these municipalities contain multiple areas that are at risk for landslides. Various soil landslides occurred in these municipali...

Exposed geo−infrastructures filled with compacted soils experience cyclic wetting–drying effects due to environment and underground water fluctuations. Soil physical mechanical behaviors are prone deterioration a great extent, e.g., swelling, collapse, or even slope failure, resulting in huge losses human life, safety, engineering construction. In this paper, hydraulic loading tests of cycles w...

The ontogeny of suction feeding performance, as measured by peak suction generating capacity, was studied in the common snook, Centropomus undecimalis. Suction pressure inside the buccal cavity is a function of the total expansive force exerted on the buccal cavity distributed across the projected area of the buccal cavity. Thus, the scaling exponent of peak suction pressure with fish standard ...

Soil suction–based analyses are paramount to proper design of foundations in expansive soils, yet availability field soil suction profiles from direct measurement is limited. A method was developed, using directly measured obtained sites across the US, by which routine geotechnical tests can be used estimate expand database for estimation profiles. Herein, expanded develop best-estimate clay en...

Despite almost 50 years of research on the functional morphology and biomechanics of suction feeding, no consensus has emerged on how to characterize suction-feeding performance, or its morphological basis. We argue that this lack of unity in the literature is due to an unusually indirect and complex linkage between the muscle contractions that power suction feeding, the skeletal movements that...

BACKGROUND The insertion of suction devices through endotracheal tubes (ETTs) increases airway resistance and the subsequent suctioning may reduce airway pressures and facilitate atelectasis. The aim of this study was to investigate how airway pressures and tidal volumes change when different combinations of suction equipment and ETT sizes are used, and to what extent unfavorable effects can be...

abstract background: we aimed to evaluate an approach to induced abortions during early pregnancies that controls the suction pressure and restricts the duration of the procedure. methods: three hundred patients programmed for induced early pregnancy abortions, hospitalized in the shandong provincial maternity & child care hospital from october 2013 to october 2015, were enrolled. patients were...

Duke et al. (1970) developed a mercury manometer and electrode-based controller for a soil water sampler A vacuum applied to soil water percolation samplers permits collecsystem. When coupled with a soil tensiometer, the detion of both macroand matrix-pore liquids. Performance of these field samplers is improved when the extraction vacuum is adjusted in vice automatically adjusted vacuum levels...