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Saturday, September 19, 2020

Failure to Preserve Science Journals

 


Today online research can supplement field and lab research in multiple sciences, but a study suggests that some potentially important findings are no longer available because they have not been preserved.

The work of archiving and preserving science journals is time consuming and there is no uniformly applied process to preserve free downloadable journal articles. If the publisher ceases to exist, the journals may vanish. 

Eighty-four online-only, open-access (OA) journals in the sciences, and nearly 100 more in the social sciences and humanities, have disappeared from the internet over the past 20 years as publishers stopped maintaining them. The average duration of online access appears to have been about 10 years.

“The analysis demonstrates that research integrity and the scholarly record preservation … are at risk across all academic disciplines and geographical regions," says Andrea Marchitelli, managing editor of JLIS.it, the Italian Journal of Library, Archives, and Information Science.

The authors of the study are Mikael Laakso (Hanken School of Economics), Lisa Matthias (Free University of Berlin), and Najko Jahn (University of Göttingen). To determine the list of the 176 vanished journals, they did some digital detective work because clues about them are fragmentary. After the journals go dark their names no longer appear in bibliometric databases.

The authors defined a vanished journal as one that published at least one complete volume as immediate OA, and less than 50% of its content is now available for free online. Some of the content may be accessible as printed copies or in paywalled commercial services.

They used a historical archive of internet content, the Internet Archive’s Wayback Machine, to determine when production ceased and when content disappeared from the internet (within 5 years for three-quarters of the journals). The journals had been based in 50 different countries. Most of the now dark journals published articles only in English.

The study found that only about one-third of the 14,068 journals indexed in the Directory of Open Access Journals in 2019 ensure the long-term preservation of their content. Some commercial services offer it, and the Public Knowledge Project Preservation Network, does so for free.


Saturday, September 12, 2020

The Moon is Rusting

 

Map of hematite on the moon—redder color means more hematite. 
(Photo credit: Shuai Li)



Planetary scientists are amazed to find the oxidized iron mineral hematite at high latitudes on the Moon. That’s according to a study published in Science Advances led by Shuai Li, an assistant researcher at the Hawaiʻi Institute of Geophysics and Planetology (HIGP) in the University of Hawaiʻi at Mānoa School of Ocean and Earth Science and Technology (SOEST).

When iron reacts with oxygen it forms reddish rust. However, the Moon's surface is virtually devoid of oxygen, which accounts for he pristine metallic iron that is prevalent on the Moon. Also highly oxidized iron has not been confirmed in samples acquired from the Apollo missions. 

In addition, solar wind blasts the lunar surface with hydrogen, which acts in opposition to oxidation. Thus, the presence of highly oxidized iron-bearing minerals, such as hematite, on the Moon was an unexpected discovery.

“Our hypothesis is that lunar hematite is formed through oxidation of lunar surface iron by the oxygen from the Earth’s upper atmosphere that has been continuously blown to the lunar surface by solar wind when the Moon is in Earth’s magnetotail during the past several billion years,” said Shuai Li.

This new research was inspired by Li’s previous discovery of water ice in the Moon’s polar regions in 2018.



Tuesday, September 1, 2020

Corn Moon Rising

 



















On Wednesday, September 2 the full moon, called the Corn Moon - will reach peak fullness at 1:22 a.m. EDT (5:22 UTC). The Moon will appear full for about three days, from Monday evening through Thursday morning. The Corn Moon occurs every 3 years.

In Europe, the Corn Moon is called the Fruit Moon, as fruits ripen around this time, and the Barley Moon, from the barley harvest.

Coming so early in the month, this sets the stage for two full moons in October. The second full moon - called the Harvest Moon - will shine on Oct. 31.

The Algonquin tribes called this the Corn Moon, as this was the time for gathering their main staple crops of corn, pumpkins, squash, beans, and wild rice.