The ancient Egyptian girl was only 15 or 16 years old when she died

An archaeological study years in the making has revealed a wealth of new information about some of Delaware’s earliest colonial settlers and shed new light on what life would have been like in the region three centuries ago.

The event will include scholarly presentations on My Lord’s Gift, a 17th century archaeological site in Queenstown, Md.; and the Coleman Farm, Reedy Island and Fort Casimir sites in Delaware.

Event will include scholarly presentations on the history and archaeology of the lower Delaware Valley including the Avery’s Rest and Fort Casimir archaeological sites.

Ancient Monuments and Archaeological Sites and Remains Act 1958

From vintage satellites to lunar rovers, space archaeologist Alice Gorman is teasing out a unique history of humanity from the objects we've dispatched from Earth

ABSTRACT

The archaeal cytoplasmic membrane provides an anchor for many surface proteins. Recently, a novel membrane anchoring mechanism involving a peptidase, archaeosortase A (ArtA), and C-terminal lipid attachment of surface proteins was identified in the model archaeon Haloferax volcanii. ArtA is required for optimal cell growth and morphogenesis, and the S-layer glycoprotein (SLG), the sole component of the H. volcanii cell wall, is one of the targets for this anchoring mechanism. However, how exactly ArtA function and regulation control cell growth and morphogenesis is still elusive. Here, we report that archaeal homologs to the bacterial phosphatidylserine synthase (PssA) and phosphatidylserine decarboxylase (PssD) are involved in ArtA-dependent protein maturation. Haloferax volcanii strains lacking either HvPssA or HvPssD exhibited motility, growth, and morphological phenotypes similar to those of an artA mutant. Moreover, we showed a loss of covalent lipid attachment to SLG in the hvpssA mutant and that proteolytic cleavage of the ArtA substrate HVO_0405 was blocked in the hvpssA and hvpssD mutant strains. Strikingly, ArtA, HvPssA, and HvPssD green fluorescent protein (GFP) fusions colocalized to the midcell position of H. volcanii cells, strongly supporting that they are involved in the same pathway. Finally, we have shown that the SLG is also recruited to the midcell before being secreted and lipid anchored at the cell outer surface. Collectively, our data suggest that haloarchaea use the midcell as the main surface processing hot spot for cell elongation, division, and shape determination.

IMPORTANCE The subcellular organization of biochemical processes in space and time is still one of the most mysterious topics in archaeal cell biology. Despite the fact that haloarchaea largely rely on covalent lipid anchoring to coat the cell envelope, little is known about how cells coordinate de novo synthesis and about the insertion of this proteinaceous layer throughout the cell cycle. Here, we report the identification of two novel contributors to ArtA-dependent lipid-mediated protein anchoring to the cell surface, HvPssA and HvPssD. ArtA, HvPssA, and HvPssD, as well as SLG, showed midcell localization during growth and cytokinesis, indicating that haloarchaeal cells confine phospholipid processing in order to promote midcell elongation. Our findings have important implications for the biogenesis of the cell surface.

The presence of large palaeo-landslides can hinder the construction of railway lines if they cause an alteration of the natural balance of the slope, significantly increasing the cost of the project. During the construction works in a section of the Madrid–Asturias high-speed railway line (Spain), a large-scale hillside instability affected 460 m of the section. The ground movement began 10 months after the start of the excavations and remained active throughout the observation period (2008–2010). Data provided by fieldwork, boreholes and instrumental monitoring have allowed the investigation of the geological units involved, together with the geometry and the kinematics of the mass movement. This landslide involves a Paleozoic basement with an estimated volume of 4 400 000 m³. It shows low displacement rates (<45 mm a^–1) and was accommodated on a single surface of rupture, which reaches more than 60 m depth. The kinematics is favoured by structural and lithological conditions, there being a strong rheological contrast in the lower part of the mobilized ground. This movement is linked to a large palaeo-landslide that was partially reactivated when excavations undermined the lower slopes of the hillside. Technical solutions for the stabilization have already caused an additional cost of 17% over the initial budget.

From vintage satellites to lunar rovers, space archaeologist Alice Gorman is teasing out a unique history of humanity from the objects we've dispatched from Earth

A new method for reliably identifying the presence of beer or other malted foodstuffs in archaeological finds is described in a new study.

Nazareth, once thought to have been a small village, likely to have been a town of around 1,000 people, new evidence suggests

Modern dating techniques are providing new time frames for indigenous settlements in Northeast North America, free from the Eurocentric bias that previously led to incorrect assumptions.

A new method for reliably identifying the presence of beer or other malted foodstuffs in archaeological finds is described in a study published May 6, 2020 in the open-access journal PLOS ONE by Andreas G. Heiss from the Austrian Academy of Sciences (OeAW), Austria and colleagues.

Arrows fired from longbows could penetrate right through the human skull creating small entry and large exit wounds.

Australian researchers used LIDAR, the aerial laser technology, to rediscover the city of Mahendraparvata in Cambodia.

Switzerland and South Korea have signed a joint declaration on the automatic exchange of tax information from 2018.

The Swiss Federal Department of Finance has launched a consultation on the introduction of the automatic exchange of information in tax matters with a series of other countries.

Ancient antagonists build bridges as treasure finds mount up

EIA will present results from four alternative policy scenarios to the Annual Energy Outlook 2020 (AEO2020) published in an Issue in Focus article. The article and the presentation will examine the potential effects of a range of alternative energy policies on the future U.S. electric power sector through 2050.

Lost city of Heracleion was lost around 800AD due to flooding and earthquakes and its relics are now submerged under the sea off the Egyptian coast.

Archaeologists have revealed the face of an Egyptian princess that lived almost 4,000 years ago. They pieced together her shattered wooden sarcophagus after it was found in 2017.

The 30 decorated coffins of men, women and children were found only three feet underground at Asasif, a necropolis on the west bank of the River Nile in Luxor, Egypt.

The largely intact Styracosaurus skull has wonky horns and was discovered by then graduate student Scott Persons in 2015 in Dinosaur Provincial Park, Alberta, Canada.

Cham : Springer, [2018]

Singapore : Springer, c2019.

Singapore : Springer, [2019]

Cham, Switzerland : Springer, [2019]

Online Resource

Dewey Library - N5630.N44 2018

Hayden Library - HT1071.A73 2018

Tantalizing new research points to an impossible conclusion: the Reconstruction may have overlooked an original 18th-century building. More remarkable still is the possibility that it may have housed Virginia’s first school for the education of black children: the Bray School. Archaeologist Mark Kostro details the story the soil tells as his team hunts for the […]

Hayden Library - QH450.M45 2019

Jennifer Colliau at WIRED by Design, 2014. In partnership with Skywalker Sound, Marin County, CA. To learn more visit: live.wired.com

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1 online resource (xvii, 1161 pages) : illustrations, maps.