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Institution

University of Wollongong

EducationWollongong, New South Wales, Australia
About: University of Wollongong is a education organization based out in Wollongong, New South Wales, Australia. It is known for research contribution in the topics: Population & Graphene. The organization has 15674 authors who have published 46658 publications receiving 1197471 citations. The organization is also known as: UOW & Wollongong University.
Topics: Population, Graphene, Mental health, Anode, Lithium


Papers
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Journal ArticleDOI
21 Apr 2016-Nature
TL;DR: New stratigraphic and chronological evidence from Liang Bua is reported that does not support the ages inferred previously for the H. floresiensis holotype, or the time of last appearance of this species.
Abstract: New excavations in Liang Bua, where the remains of the ‘Hobbit’ (Homo floresiensis) were discovered, show that this diminutive human species used this cave between 190,000 and 50,000 years ago, and not until as recently as 12,000 years ago as previously interpreted; modern humans have been present in Australia since around 50,000 years ago, so whether Homo floresiensis survived long enough to witness the arrival of modern humans is still an open question. The discovery in Liang Bua cave on the island of Flores in Indonesia of the diminutive Homo floresiensis, an archaic member of the human family commonly known as the 'Hobbit', was an archaeological sensation in 2004. A source of considerable debate was the fact that it lived in Liang Bua cave between 95,000 and 12,000 years ago, after modern humans had colonized the area (around 50,000 years ago). Thomas Sutikna and colleagues — including many of the original research team — have gone back to Liang Bua, where new excavations have exposed previously unexplored parts of the cave. They have found that the layers of sediment in the cave are not deposited evenly, and it now seems that the H. floresiensis-bearing strata are older than was thought. New radiometric dating places the H. floresiensis remains and stone artefacts to between 190,000 and 50,000 years ago. Whether H. floresiensis survived long enough to witness the arrival of modern humans is an open question. Homo floresiensis, a primitive hominin species discovered in Late Pleistocene sediments at Liang Bua (Flores, Indonesia)1,2,3, has generated wide interest and scientific debate. A major reason this taxon is controversial is because the H. floresiensis-bearing deposits, which include associated stone artefacts2,3,4 and remains of other extinct endemic fauna5,6, were dated to between about 95 and 12 thousand calendar years (kyr) ago2,3,7. These ages suggested that H. floresiensis survived until long after modern humans reached Australia by ~50 kyr ago8,9,10. Here we report new stratigraphic and chronological evidence from Liang Bua that does not support the ages inferred previously for the H. floresiensis holotype (LB1), ~18 thousand calibrated radiocarbon years before present (kyr cal. bp), or the time of last appearance of this species (about 17 or 13–11 kyr cal. bp)1,2,3,7,11. Instead, the skeletal remains of H. floresiensis and the deposits containing them are dated to between about 100 and 60 kyr ago, whereas stone artefacts attributable to this species range from about 190 to 50 kyr in age. Whether H. floresiensis survived after 50 kyr ago—potentially encountering modern humans on Flores or other hominins dispersing through southeast Asia, such as Denisovans12,13—is an open question.

209 citations

Journal ArticleDOI
TL;DR: In this article, a review of the recent progress in the use of 2D active materials and in composites consisting of both 2D supports and active materials as anodes for SIBs is presented.
Abstract: Sodium-ion batteries (SIBs) have attracted great attention recently due to the abundance of sodium resources, particularly for large-scale electric energy storage applications for renewable energy and smart grids. More and more nanostructured anode materials have been developed with the aims of high energy density, high cycling stability, and excellent rate capability, in which two-dimensional (2D) nanostructures are showing promise due to their shortened paths for sodium ion transportation and larger surface areas for sodium ion absorption. Moreover, 2D materials (e.g. graphene) have been proved to be excellent supporting and conducting agents in SIB anodes due to their high electrical conductivity and structural stability, in which synergetic effects between the graphene and the active materials are generally observed. This review is devoted to the recent progress in the use of 2D active materials and in composites consisting of both 2D supports and active materials as anodes for SIBs. Based on the manner of sodium storage, their electrochemical performance for sodium storage is discussed in terms of four classifications, including carbonaceous materials (graphene and carbon nanosheets), alloy based materials (Sn, Sb, and P), conversion materials (phosphides/oxides/sulfides/selenides), and intercalation materials (Ti-based compounds). Finally, the main challenges for and perspectives on 2D nanostructures for sodium storage are discussed.

209 citations

Journal ArticleDOI
TL;DR: It is concluded that urban vegetation can facilitate broad health benefits, but there is little empirical evidence linking these benefits to air pollution reduction by urban vegetation, and appreciable efforts are needed to establish the underlying policies, design and engineering guidelines governing its deployment.

209 citations

Journal ArticleDOI
13 Oct 2014-ACS Nano
TL;DR: A simple ball-milling technique is reported to combine both the physical and chemical routes into a one-step process for low-cost, scalable, and eco-friendly production of graphene nanoplatelets (GnPs) edge-functionalized with sulfur (S-GnP) as highly efficient LSB cathode materials of practical significance.
Abstract: Although much progress has been made to develop high-performance lithium–sulfur batteries (LSBs), the reported physical or chemical routes to sulfur cathode materials are often multistep/complex and even involve environmentally hazardous reagents, and hence are infeasible for mass production. Here, we report a simple ball-milling technique to combine both the physical and chemical routes into a one-step process for low-cost, scalable, and eco-friendly production of graphene nanoplatelets (GnPs) edge-functionalized with sulfur (S-GnPs) as highly efficient LSB cathode materials of practical significance. LSBs based on the S-GnP cathode materials, produced by ball-milling 70 wt % sulfur and 30 wt % graphite, delivered a high initial reversible capacity of 1265.3 mAh g–1 at 0.1 C in the voltage range of 1.5–3.0 V with an excellent rate capability, followed by a high reversible capacity of 966.1 mAh g–1 at 2 C with a low capacity decay rate of 0.099% per cycle over 500 cycles, outperformed the current state-of...

209 citations

Journal ArticleDOI
TL;DR: Light is shed on teachers’ readiness for OTL at the time of the pandemic by identifying teacher profiles based on a set of key dimensions of readiness and explaining profile membership by individual teacher characteristics, contextual aspects of the shift to OTL, and country-level indicators representing educational innovation and cultural orientation.

208 citations


Authors

Showing all 15918 results

NameH-indexPapersCitations
Lei Jiang1702244135205
Menachem Elimelech15754795285
Yoshio Bando147123480883
Paul Mitchell146137895659
Jun Chen136185677368
Zhen Li127171271351
Neville Owen12770074166
Chao Zhang127311984711
Jay Belsky12444155582
Shi Xue Dou122202874031
Keith A. Johnson12079851034
William R. Forman12080053717
Yang Li117131963111
Yusuke Yamauchi117100051685
Guoxiu Wang11765446145
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20241
202388
2022483
20212,897
20203,018
20192,784