Review of the mechanisms of debris-flow impact against barriers

Our limited understanding of the mechanisms pertaining to the force exerted by debris flows on barriers makes it difficult to ascertain whether a design is inadequate, adequate, or over-designed. The main scientific challenge is because flow-type landslides impacting a rigid barrier is rarely captured in the field, and no systematic, physical experimental data is available to reveal the impact mechanisms. An important consideration in flow-structure interaction is that the impact dynamics can differ radically depending on the composition of the flow. Currently, no framework exists that can characterize the impact behavior for a wide range of flow compositions. This review paper examines recent works on debris-flow structure interactions and the limitations of commonly used approaches to estimate the impact load for the design of barriers. Key challenges faced in this area and outlook for further research are discussed

Review of the mechanisms of debris-flow impact against barriers

International audienceOur limited understanding of the mechanisms pertaining to the force exerted by debris flows on barriers makes it difficult to ascertain whether a design is inadequate, adequate, or over-designed. The main scientific challenge is because flow-type landslides impacting a rigid barrier is rarely captured in the field, and no systematic, physical experimental data is available to reveal the impact mechanisms. An important consideration in flow-structure interaction is that the impact dynamics can differ radically depending on the composition of the flow. Currently, no framework exists that can characterize the impact behavior for a wide range of flow compositions. This review paper examines recent works on debris-flow structure interactions and the limitations of commonly used approaches to estimate the impact load for the design of barriers. Key challenges faced in this area and outlook for further research are discussed

Top Ten Tips Palliative Care Clinicians Should Know About Psychosocial and Family Support.

Palliative care (PC) is perhaps the most inherently interdisciplinary specialty within health care. Comprehensive PC is delivered by a core team of physicians, nurses, social workers, spiritual care providers, pharmacists, and others who address the broad range of medical, psychosocial, and spiritual needs of those living with serious illness. While PC clinicians are typically skilled in screening for distress, the best path to follow when patients screen positive for psychosocial distress or exhibit mental health challenges may not always be clear. This article brings together the perspectives of experienced social workers practicing across PC and hospice settings. It seeks to identify opportunities and rationale for the integration of palliative social work (PSW) in the provision of quality, person-centered, family-focused, and culturally congruent care for the seriously ill. Increasing recognition of the impact of social determinants of health highlights the critical importance of including PSW if we are to better understand and ultimately address the broad range of factors that influence people\u27s quality of life