منابع مشابه
The booming Medicaid market.
D entistry is in the midst of a major transition. One key driver of change is the Affordable Care Act (ACA), which has many provisions relevant to the dental care sector. A key provision of the ACA is Medicaid expansion, which has the potential to reshape the dental benefits landscape considerably. Let’s first look at trends in Medicaid before ACA. For more than a decade, public health insuranc...
متن کاملSolving the mystery of booming sand dunes
[1] Desert booming can be heard after a natural slumping event or during a sand avalanche generated by humans sliding down the slip face of a large dune. The sound is remarkable because it is composed of one dominant audible frequency (70 to 105 Hz) plus several higher harmonics. This study challenges earlier reports that the dunes’ frequency is a function of average grain size by demonstrating...
متن کاملTerebellidae (Annelida, Terebelliformia) from Lizard Island, Great Barrier Reef, Australia.
UNLABELLED In a survey of the polychaetes of the Lizard Island region, sixteen new species of terebellids, plus one previously described species, were found from material collected during the two week long Lizard Island Taxonomic Workshop in 2013, along with material collected from previous projects carried out at Lizard Island. This included the CReefs Project (http://www. AIMS gov.au/creefs...
متن کاملThe Oldest Genus of Scincid Lizard (Squamata) from the Tertiary Etadunna Formation of South Australia
-Recent expeditions to the Lake Palankarinna rea of South Australia resulted in the oldest and only known extinct skink genus in Australia. The holotype of a new genus and species, Proegernia palankarinnensis, was collected from the basal portion of the Late Oligocene Etadunna Formation from the Minkina Local Fauna. Additional scincid fossils previously recovered from higher levels in the forma...
متن کاملBooming Sand Dunes
Booming” sand dunes have a remarkable capacity to produce sounds that are comparable with those from a stringed instrument. This phenomenon, in which sound is generated after an avalanching of sand along the slip face of a dune, has been known for centuries and occurs in at least 40 sites around the world. A spectral analysis of the sound shows a dominant frequency between 70 and 110 Hz, as wel...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Science
سال: 1920
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.52.1342.273