Results 61 to 70 of about 10,988 (297)
The first fossil representative of the dragonfly family Synthemistidae
Acta Palaeontologica PolonicaGallosynthemis bechlyi gen. et sp. nov., described from the Paleocene maar of Menat (Puy-de-Dôme, France) is the firstever fossil record of the dragonfly family Synthemistidae. It shows the main synapomorphies of the family, viz.
Andre Nel +3 more
doaj +1 more source
049_05: Man Working on a Fossil in the Field
, 2021 This item features the black and white photo of a man working on a fossil that he found. He is squatting on the ground and holds a pick and holds a pick axe in his hands. A pail is directly behind him and several other supplies are behind the pail.
Sternberg, George Fryer, 1883-1969
core
Advanced Materials, EarlyView.As‐spun carbon materials produced from Lignosulfonate, gelatin, and alginate, selected for water solubility, and ability to produce templated sustainable carbon nanostructures. Gelatin and alginate are sacrificial during thermal processing, allowing the production of engineered high surface area nanostructures, which are further characterized for ...
Judith Miralda‐Jalle +6 more
wiley +1 more source
The earliest cowries: the origin of cypraeoid gastropods
Acta Palaeontologica PolonicaCowries, the family Cypraeidae, form a diverse and conspicuous group of gastropods living in tropical to subtropical seas. Their shell is convolute (last whorl covers all previous ones) with a narrow, slit-like siphonate aperture bearing denticles ...
Alexander Nützel +3 more
doaj +1 more source
, 2021 This item features the black and white photo taken at Jack Swayze\u27s ranch in Clark County, Kansas during a faculty excavation trip. Two men are looking at a fossil that is being held by the man on the left. The men are sitting right next to each other.
Sternberg, George Fryer, 1883-1969
core
Advanced Materials, EarlyView.Stacked nanoflake assembly (SNA) membranes can oscillate autonomously, offering opportunities for soft actuation and energy harvesting. This work uncovers the physical mechanism behind the sustained oscillation of SNA membranes in gradient humidity and identifies three governing dimensionless parameters, enabling rational design for optimizing SNA ...
Zijing Zhang +5 more
wiley +1 more source
Fred Q. Fossil (full front view)
, 2019 Full front view of Fossil (watches) advertising icon. man in blue outfit on stand with word Fossil.https://scholarscompass.vcu.edu/brandcenter_icons/1256/thumbnail ...
Fossil
core
Uranium-Lead dating of hominid fossil sites in South Africa [PDF]
, 2005 Discoveries of hominid, or apeman, fossils in the twentieth century have brought human evolution into the scientific spotlight. It is important that ages are assigned to such hominids so that their place in human evolution can be established.
Walker, Joanne
core
Advanced Materials, EarlyView.This review summarizes the principles and challenges of nonaqueous lithium‐oxygen batteries and recent advances in cathode catalysts, including carbon‐based materials, metals, oxides, sulfides, nitrides, carbides, and redox mediators. It highlights emerging design strategies and artificial intelligence‐driven approaches, emphasizing data‐assisted ...
Yuqing Yao +8 more
wiley +1 more source
Fred Q. Fossil (full rear view)
, 2019 Full back view of Fossil (watches) advertising icon. man in blue outfit on stand with word Fossil.https://scholarscompass.vcu.edu/brandcenter_icons/1257/thumbnail ...
Fossil
core