Significance of lignin and fungal markers in the Devonian (407 Ma) Rhynie Chert.

The Rhynie Chert (Lower Devonian, Scotland) hosts a remarkably well-preserved early terrestrial ecosystem. Organisms including plants, fungi, arthropods, and bacteria were rapidly silicified due to inundation by silica-rich hot spring fluids. Exceptional molecular preservation has been noted by many authors, including some of the oldest evidence of lignin in the fossil record.

Maritime Applications of Prolonged Casualty Care Sepsis on a Destroyer During Distributed Maritime Operations.

During distributed maritime operations, individual components of the naval force are more geographically dispersed. As the U.S.

Maritime Applications of Prolonged Casualty Care: A Series Introduction.

The current United States Navy and North Atlantic Treaty Organization (NATO) maritime strategy is coalescing around the concept of Distributed Maritime Operations (DMOs) to prepare for future large-scale combat operations with peer or near-peer competitors. As a result, individual components of naval forces will be more geographically dispersed and oper- ating at a significant time and distance from higher levels of medical care. We developed a series of educational scenarios informed by real-world events to enhance the ability of Role 1 medical caregivers to apply the principles of Prolonged Ca- sualty Care during current routine, crisis, and contingency DMOs.

Rapid encapsulation of true ferns and arborane/fernane compounds fossilised in siderite concretions supports analytical distinction of plant fossils.

Fossilised true ferns (Pecopteris sp.) preserved in siderite concretions from the Mazon Creek Lagerstätte (Illinois) presented a unique opportunity to characterise the organic signatures of these late Carboniferous plants. Localised analyses of true fern fossils showed several highly abundant phytohopanoids and fernane/arborane derived aromatic products, which were present only negligibly within their siderite matrix, as well as from other types of fossilised plants.