Search results for: Rachel Wood

Items from 1 to 20 out of 58 results

article

In situ U–Pb geochronology of Pre‐Salt carbonates reveals links between diagenesis and regional tectonics

Nathan Rochelle‐Bates, Rachel Wood, Stefan Schröder, Nick M. W. Roberts

Identification of processes driving carbonate diagenesis requires an accurate chronology, particularly along volcanic margins where complex mineral parageneses develop. The Cretaceous “Pre‐Salt” carbonates formed in the volcanic proto‐South Atlantic and are now extensive hydrocarbon reservoirs offshore Brazil and Angola. Primary and diagenetic textures strongly affect reservoir properties, but timings...

article

Anti‐CD52 antibody treatment in murine experimental autoimmune encephalomyelitis induces dynamic and differential modulation of innate immune cells in peripheral immune and central nervous systems

Mark Barbour, Rachel Wood, Tanith Harte, Trevor J. Bushell, more

Immunology > 165 > 3 > 312 - 327

Anti‐CD52 antibody (anti‐CD52‐Ab) leads to a rapid depletion of T and B cells, followed by reconstitution of immune cells with tolerogenic characteristics. However, very little is known about its effect on innate immune cells. In this study, experimental autoimmune encephalomyelitis mice were administered murine anti‐CD52‐Ab to investigate its effect on dendritic cells and monocytes/macrophages in...

article

Combined effects of temperature and population density of Myzus persicae (Hemiptera: Aphididae) on consumption by Harmonia conformis (Coleoptera: Coccinellidae)

Joanne C Holloway, Madeleine Barton, Rachel Wood, Hazel R Parry

Pest Management Science > 78 > 2 > 653 - 661

BACKGROUND The green peach aphid Myzus persicae is a major pest of many crops around the world, causing direct damage and acting as a vector for several viruses. This species has developed resistance to several insecticides, resulting in a greater emphasis on nonchemical methods of control. The aphidophagous ladybird, Harmonia conformis, is one of several species to predate on this pest. H. conformis...

article

Modelling Ediacaran metazoan–microbial reef growth

Andrew Curtis, Rachel Wood, Frederick Bowyer, Amy Shore, more

Sedimentology > 68 > 5 > 1877 - 1892

Throughout the Phanerozoic, sessile metazoans grew in close association with various microbial carbonates to form reefs. The first metazoans with calcareous hard‐parts appeared in the terminal Ediacaran, ca 550 million years ago, and these also commonly grew associated with microbial mats, thrombolites and stromatolites, to form the oldest known metazoan–microbial reefs. These hard‐parts also formed...

article

Order of diagenetic events controls evolution of porosity and permeability in carbonates

Aleksandra Hosa, Rachel Wood, Christian Betzler

Sedimentology > 67 > 6 > 3042 - 3054

The properties of carbonate rocks are often the result of multiple, diagenetic events that involve phases of cementation (porosity occlusion) and dissolution (porosity enhancement). This study tests the hypothesis that the order of these events is a major control on final porosity and permeability. A three‐dimensional synthetic model of grainstone is used to quantify trends that show the effect of...

article

A multi‐method approach to dating the burial and skeleton of Kiacatoo Man, New South Wales, Australia

Timothy Pietsch, Justine Kemp, Colin Pardoe, Rainer Grün, more

Journal of Quaternary Science > 34 > 8 > 662 - 673

Kiacatoo Man, a large, rugged Aboriginal adult buried in the Lachlan riverine plains of southeastern Australia, was discovered in 2011. Laser‐ablation uranium series analysis on bone yielded a minimum age for the burial of 27.4 ± 0.4 ka (2σ). Single‐grain, optically stimulated luminescence ages on quartz sediment in which the grave had been dug gave a weighted mean age of 26.4 ± 1.5 ka (1σ). Luminescence...

article

Did anoxia terminate Ediacaran benthic communities? Evidence from early diagenesis

Rachel Wood, Frederick Bowyer, Amelia Penny, Simon W. Poulton

Precambrian Research > 2018 > 313 > C > 134-147

The Ediacaran oceanic redox landscape was heterogeneous, where many basins had a shallow and highly dynamic chemocline above anoxic (ferruginous or euxinic) or low oxygen (manganous) waters. Seawater mMg/Ca ratio was also high, promoting early diagenetic dolomitisation. How the benthos responded to these conditions is fundamental to understanding their ecological dynamics. Here we utilise redox sensitive...

article

Carpenters Gap 1: A 47,000 year old record of indigenous adaption and innovation

Tim Maloney, Sue O'Connor, Rachel Wood, Ken Aplin, more

Quaternary Science Reviews > 2018 > 191 > C > 204-228

Here we present the first detailed analysis of the archaeological finds from Carpenters Gap 1 rockshelter, one of the oldest radiocarbon dated sites in Australia and one of the few sites in the Sahul region to preserve both plant and animal remains down to the lowest Pleistocene aged deposits. Occupation at the site began between 51,000 and 45,000 cal BP and continued into the Last Glacial Maximum,...

article

Innovation not recovery: dynamic redox promotes metazoan radiations

Rachel Wood, Douglas H. Erwin

Biological Reviews > 93 > 2 > 863 - 873

Environmental fluctuations in redox may reinforce rather than hinder evolutionary transitions, such that variability in near‐surface oceanic oxygenation can promote morphological evolution and novelty. Modern, low‐oxygen regions are heterogeneous and dynamic habitats that support low diversity and are inhabited by opportunistic and non‐skeletal metazoans. We note that several major radiation episodes...

article

Fish otolith microchemistry: Snapshots of lake conditions during early human occupation of Lake Mungo, Australia

Kelsie Long, Rachel Wood, Ian S. Williams, John Kalish, more

Quaternary International > 2018 > 463 > PA > 29-43

The δ¹⁸O, Strontium/Calcium and Barium/Calcium values recorded in golden perch otoliths collected from two evaporative lakes, modern Lake Hope and ancient Lake Mungo, have been used to reconstruct changes in water composition and environmental conditions during the life of the fish. Lake Hope was filled by floodwaters in 1989 and 1990, then a period of lake drying was followed by a natural fish death...

article

558: Predictors of excess postoperative opioid consumption after cesarean delivery among opioid naive women

Malavika Prabhu, Sarah Dolisca, Rachel Wood, Julie Gonzalez, more

American Journal of Obstetrics and Gynecology > 2018 > 218 > 1(S) > S333-S334

article

“You can try to press different emotional buttons”: The conflicts and strategies of eliciting emotions for fundraisers

Jon Dean, Rachel Wood

International Journal of Nonprofit and Voluntary Sector Marketing > 22 > 4 > n/a - n/a

In a competitive climate in which charities must increasingly rely on fundraising with the public, emotions such as hope, guilt, and fear are powerful tools that can be used strategically to secure donations or participation. This paper explores data from interviews with 23 fundraisers and voluntary sector workers, managers, and officials, to argue that decisions around how, why, and when to invest...

article

Wood charcoal analysis at Riwi cave, Gooniyandi country, Western Australia

Rose Whitau, Jane Balme, Sue O'Connor, Rachel Wood

Quaternary International > 2017 > 457 > C > 140-154

Wood charcoals excavated from archaeological sites provide a useful tool for palaeoenvironmental reconstruction, particularly in arid and semi-arid zones, where suitable catchments for palynological archives are often limited. Preservation of organic material in northern Australia is characteristically poor, and wood charcoal analysis provides a viable alternative to understand shifts in woody vegetation...

article

Can the Apgar Score be Used for International Comparisons of Newborn Health?

Ayesha Siddiqui, Marina Cuttini, Rachel Wood, Petr Velebil, more

Paediatric and Perinatal Epidemiology > 31 > 4 > 338 - 345

Background The Apgar score has been shown to be predictive of neonatal mortality in clinical and population studies, but has not been used for international comparisons. We examined population‐level distributions in Apgar scores and associations with neonatal mortality in Europe. Methods Aggregate data on the 5 minute Apgar score for live births and neonatal mortality rates from countries participating...

article

The Neolithic settlement of Loc Giang on the Vam Co Dong River, southern Vietnam and its broader regional context

Philip J. Piper, Khanh Trung Kien Nguyen, Thi Kim Quy Tran, Rachel Wood, more

Archaeological Research in Asia > 2017 > 10 > Complete > 32-47

Loc Giang is an early Neolithic settlement located on the east bank of the Vam Co Dong River in Long An Province, southern Vietnam. Archaeological excavations at the site have identified sequences of midden deposit, floor surfaces, postholes and hearths, suggesting that the settlement consisted of ground-built dwellings. Throughout the life of the settlement several phases of reconstruction and expansion...

article

Quantifying the impact of early calcite cementation on the reservoir quality of carbonate rocks: A 3D process-based model

Aleksandra Hosa, Rachel Wood

Advances in Water Resources > 2017 > 104 > C > 89-104

The reservoir properties of carbonate rocks are controlled by both deposition and diagenesis. The latter includes the early precipitation of calcite cements, which can exert a strong control on the evolution of subsequent diagenetic pathways. We quantify the impact of early marine cement growth in grainstones on evolving pore space by examining trends in the relationship between cementation and permeability...

article

The effect of grain size on carbonate contaminant removal from tooth enamel: Towards an improved pretreatment for radiocarbon dating

Rachel Wood, Mathieu Duval, Nguyen Thi Mai Huong, Nguyen Anh Tuan, more

Quaternary Geochronology > 2016 > 36 > C > 174-187

It is rarely possible to directly radiocarbon date skeletal remains from hot environments as collagen rapidly degrades. Although able to survive in the majority of burial environments for longer, unburnt biological apatites frequently produce inaccurate radiocarbon dates due to contamination from carbonate in the groundwater. The location of this contamination within the skeletal material is rarely...

article

Cueva Antón: A multi-proxy MIS 3 to MIS 5a paleoenvironmental record for SE Iberia

João Zilhão, Aurélie Ajas, Ernestina Badal, Christoph Burow, more

Quaternary Science Reviews > 2016 > 146 > C > 251-273

Overlying a palustrine deposit of unknown age (complex FP), and protected from weathering and erosion inside a large cave/rock-shelter cavity, the sedimentary fill of Cueva Antón, a Middle Paleolithic site in SE Spain, corresponds in most part (sub-complexes AS2-to-AS5) to a ca.3 m-thick Upper Pleistocene terrace of the River Mula. Coupled with the constraints derived from the deposit’s paleoclimatic...

article

Calibrating Lattice Boltzmann flow simulations and estimating uncertainty in the permeability of complex porous media

Aleksandra Hosa, Andrew Curtis, Rachel Wood

Advances in Water Resources > 2016 > 94 > C > 60-74

A common way to simulate fluid flow in porous media is to use Lattice Boltzmann (LB) methods. Permeability predictions from such flow simulations are controlled by parameters whose settings must be calibrated in order to produce realistic modelling results. Herein we focus on the simplest and most commonly used implementation of the LB method: the single-relaxation-time BGK model. A key parameter...

chapter

Evolving Lives: The Individual Historical Dimension in Evolution

Rachel Wood

Lecture Notes in Computer Science > Advances in Artificial Life > Miscellaneous > 719-722

Some benefits of a dialogue between evolutionary robotics and developmental ethology are presented with discussion of how developmental models might inform approaches to evolution. Notions of the importance of historical processes in adaptation are outlined and parallels between evolution and ontogeny as sources of change examined.

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INFONA - science communication portal

Search results for: Rachel Wood

In situ U–Pb geochronology of Pre‐Salt carbonates reveals links between diagenesis and regional tectonics

Anti‐CD52 antibody treatment in murine experimental autoimmune encephalomyelitis induces dynamic and differential modulation of innate immune cells in peripheral immune and central nervous systems

Combined effects of temperature and population density of Myzus persicae (Hemiptera: Aphididae) on consumption by Harmonia conformis (Coleoptera: Coccinellidae)

Modelling Ediacaran metazoan–microbial reef growth

Order of diagenetic events controls evolution of porosity and permeability in carbonates

A multi‐method approach to dating the burial and skeleton of Kiacatoo Man, New South Wales, Australia

Did anoxia terminate Ediacaran benthic communities? Evidence from early diagenesis

Carpenters Gap 1: A 47,000 year old record of indigenous adaption and innovation

Innovation not recovery: dynamic redox promotes metazoan radiations

Fish otolith microchemistry: Snapshots of lake conditions during early human occupation of Lake Mungo, Australia

558: Predictors of excess postoperative opioid consumption after cesarean delivery among opioid naive women

“You can try to press different emotional buttons”: The conflicts and strategies of eliciting emotions for fundraisers

Wood charcoal analysis at Riwi cave, Gooniyandi country, Western Australia

Can the Apgar Score be Used for International Comparisons of Newborn Health?

The Neolithic settlement of Loc Giang on the Vam Co Dong River, southern Vietnam and its broader regional context

Quantifying the impact of early calcite cementation on the reservoir quality of carbonate rocks: A 3D process-based model

The effect of grain size on carbonate contaminant removal from tooth enamel: Towards an improved pretreatment for radiocarbon dating

Cueva Antón: A multi-proxy MIS 3 to MIS 5a paleoenvironmental record for SE Iberia

Calibrating Lattice Boltzmann flow simulations and estimating uncertainty in the permeability of complex porous media

Evolving Lives: The Individual Historical Dimension in Evolution

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