Article
Engineering, Electrical & Electronic
Jeremy Gillbanks, Matthew Myers, Gilberto A. Umana-Membreno, Murray V. Baker, Brett D. Nener, Giacinta Parish
Summary: Long-term operation of a novel ion sensor technology under varying temperature and pressure conditions showed linear and repeatable response within a two-hour observation window, with temperature dependence strongly dominating pressure dependence. Anomalous variations in response were observed after approximately 20 hours under changing pressure and temperature conditions, indicating implications for sensor implementation in dynamic environments.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Sonia Moreno, David Royo, Abdel G. El-Hachimi, Maria Rodriguez-Castillo, Miguel Monge, M. Elena Olmos, Jose M. Lopez-de-Luzuriaga
Summary: The reaction between [Au2Ag2(C6F5)(4)(OEt2)(2)](n), PbCl2 and terpyridine leads to the formation of a new polymeric complex [{Au(C6F5)(2)}(2){Pb(terpy)}](n) (1). This complex exhibits potential voids that can serve as a VOC sensor and can form different polymorphs when exposed to different solvent vapours.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Kevin Conley, Antti J. Karttunen
Summary: Carbon nanotube (CNT) films with excellent conductivity and flexibility are suitable for chemical sensing and touch screen devices. This study investigates the effects of different metals and chemicals on the electrical conductivity of CNT networks. Doping agents can enhance the conductivity of the network, with aluminum having the greatest impact along the nanotubes and copper having the greatest impact across the intersections. Silver doping activates the conductivity of semiconductor nanotubes in heterogeneous networks. Small amounts of doping agents can significantly alter the directional conductivity of the nanotube network and provide new pathways for charge transport.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Kevin Conley, Antti J. Karttunen
Summary: Carbon nanotube films have excellent conductivity and flexibility for chemical sensing and touch screen devices. Understanding how charge is transported within the network is crucial for developing new materials and improving existing devices. In this study, the conductivity of networks of carbon nanotubes containing different metals and dopants was investigated using quantum mechanical methods. The results showed that the conductivity along the nanotubes is stronger than across the junction, and dopants can enhance the conductivity in all directions. Adding aluminum increased the conductivity along the nanotubes by 389 times, while adding copper increased the conductivity across the junction by 14 times. Additionally, adding silver dopants activated charge transport along the semiconducting nanotubes, increasing the conductivity by 781 times. These findings have implications for applications such as chemical sensing and touch screens.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Plant Sciences
Liru Chen, Yuanfei Pan, Xiaoyun Pan, Liangrui Yu, Alejandro Sosa, Ji Yang, Bo Li
Summary: This study suggests that density-dependent kin interactions may have evolved from competition to cooperation by kin selection of reduced shade avoidance responses in response to invasive plant invasion. The results indicate that kin selection pressures may play a more important role in fine-tuning plant shade avoidance responses than previously thought, providing a new mechanism to explain plant invasion success.
JOURNAL OF ECOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Yixin Weng, Xinguo Ma, Gang Yuan, Hui Lv, Zhongyong Yuan
Summary: This study investigates the adsorption behavior and sensing performance of a novel Janus MoSiGeN4 nanosheet for NO and NO2 gas molecules. The results show slight charge transfer between the gas molecules and the nanosheet, and the generation of small band gaps and impurity levels in the electronic structures after gas adsorption, enhancing the electronic conductivity.
Article
Nanoscience & Nanotechnology
Ranjeetkumar Gupta, Birzhan Badel, Priya Gupta, David G. Bucknall, David Flynn, Ketan Pancholi
Summary: As the percentage of nanoparticles increases, the crystallinity of LDPE decreases, while the maximum electrical displacement response, current, remnant current, and coercive field all increase. The simulated 3D model indicates that the 12% nanoparticulate-loaded sample demonstrates the best overall trade-off of key parameters.
ACS APPLIED NANO MATERIALS
(2021)
Article
Mathematics
Minyue Zhong, Yao Tan, Jie Li, Hongming Zhang, Siyi Yu
Summary: In this paper, a multi-scale residual cattle density estimation network is proposed to solve the problems of uneven cattle distribution and large scale variations caused by perspective changes. Experimental results demonstrate that this network achieves optimal density estimation results on both cattle dataset and dense population dataset.
Article
Engineering, Electrical & Electronic
V. Vidhya, P. Anbarasu, D. Geetha
Summary: Gas sensing using Cu-doped SnO2-TiO2 nanostructures was investigated in this study. The optimized nanocomposite exhibited higher sensitivity to reducing gases, which was attributed to the enhanced gas diffusivity and catalytic properties of the material.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Agriculture, Multidisciplinary
Stephen L. Goldson, Mark R. McNeill, Malvika Bana, Oluwashola Olaniyan, Alison J. Popay, Barbara I. P. Barratt, Chikako van Koten
Summary: This study examines the impact of invasive pest species on New Zealand's economically vital exotic pastures, specifically the Argentine stem weevil. The research explores the ecology of the adult weevil and its parasitoid control agent, as well as factors affecting sampling accuracy and interpretation of population density and parasitism estimates. The findings reveal the biases in sampling methods and environmental conditions that contribute to the decline in parasitism rates, emphasizing the importance of considering these factors in population dynamics assessment.
NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Zemin Li, Jiaoya Huang, Runhui Zhou, Ziyu Chen, Wenchao Gao, Jiang He, Rongrong Bao, Caofeng Pan
Summary: This study proposes a strategy to eliminate the influence of temperature on hydrogel strain sensors by building an in-situ hydrogel temperature sensor next to the strain sensor. The hydrogel exhibits a good balance between conductivity and stretchability. The bimodal sensor can accurately control the manipulator under dynamic temperatures and provides a new method to eliminate the influence of temperature on strain sensing.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Chankyu Han, Jungrak Choi, Junseong Ahn, Hyunjin Kim, Ji-Hwan Ha, Hyeonseok Han, Seokjoo Cho, Yongrok Jeong, Jimin Gu, Inkyu Park
Summary: Self-powered triboelectric pressure sensors are becoming popular due to their energy efficiency. However, the accuracy of measurement is affected by various factors. To address this, a mechanically induced spike-based self-calibration method is proposed. This sensor has potential applications in precision agriculture.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Engineering, Electrical & Electronic
Wennan Xiong, Hui Feng, Haosen Liwang, Dan Li, Wanbing Yao, Dilinazha Duolikun, Yunlei Zhou, YongAn Huang
Summary: Electronic skin with multifunctional tactile feedbacks and good wearability has great potential in compliant robot manipulations and human-robot interaction. It can perfectly cover non-developable and time-dynamic curved surfaces, and successfully achieve various tactile feedbacks.
IEEE SENSORS JOURNAL
(2022)
Article
Agriculture, Dairy & Animal Science
Jessica G. Pollock, Alan W. Gordon, Kathryn M. Huson, Deborah A. McConnell
Summary: This study investigates the effects of different pasture allocation frequencies on the feeding behavior of grazing dairy cows. The results show that the animals display diurnal feeding patterns, with most grazing occurring during the day and ruminating occurring at night. Increased pasture allocation frequency leads to greater grazing and ruminating times, indicating the impact of resource competition on lower dominance animals.
Article
Agriculture, Dairy & Animal Science
Rebecca Martin, Torsten Pook, Joern Bennewitz, Markus Schmid
Summary: The study shows that adapting a sheep breeding program to a pasture-based production environment can significantly increase genetic gain. This can be achieved by including both field and station progeny testing to match the selection environment with the production environment.
Article
Agriculture, Multidisciplinary
Beth Paganoni, Claire Macleay, Andrew van Burgel, Andrew Thompson
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2020)
Article
Agriculture, Multidisciplinary
Amy Lockwood, Jason Trompf, Serina Hancock, Lyndon Kubeil, Andrew Thompson, John Young
AGRICULTURAL SYSTEMS
(2020)
Article
Agriculture, Dairy & Animal Science
Andrew N. Thompson, Elise Bowen, John Keiller, Don Pegler, Gavin Kearney, Cesar A. Rosales-Nieto
Summary: Ewe lambs can reach puberty at 7-10 months old and are more fertile if heavier at breeding. The study found that heavier ewes at breeding have higher weaning rates, with a slight decrease after reaching 45 kg. Age at breeding has a linear effect on weaning rates, increasing by 0.4% per day. Increasing liveweight and age at breeding can improve offspring survival rates.
Review
Veterinary Sciences
Mieghan Bruce, John M. Young, David G. Masters, Gordon Refshauge, Andrew N. Thompson, Paul R. Kenyon, Ralph Behrendt, Amy Lockwood, David W. Miller, Caroline Jacobson
Summary: Dystocia contributes to significant lamb and ewe mortality in sheep production in Australia and New Zealand. The financial impacts of dystocia on the Australian sheep industry are substantial, and reducing dystocia through improved genetics and management can lead to improved animal welfare and farm profit.
PREVENTIVE VETERINARY MEDICINE
(2021)
Article
Agriculture, Dairy & Animal Science
Thomas Clune, Amy Lockwood, Serina Hancock, Andrew N. Thompson, Sue Beetson, Angus J. D. Campbell, Elsa Glanville, Daniel Brookes, Colin Trengove, Ryan O'Handley, Gavin Kearney, Caroline Jacobson
Summary: This study provides detailed investigation on abortion and lamb mortality in maiden ewes in Australia. The results show variability in abortion rates and lamb mortality rates among maiden ewe flocks, which significantly contribute to overall lamb losses. Addressing abortion issues may improve reproductive performance in maiden ewe flocks.
Article
Agriculture, Dairy & Animal Science
Dayna Hutchison, Bronwyn E. Clarke, Serina Hancock, Andrew N. Thompson, Elise Bowen, Caroline Jacobson
Summary: The reproductive performance of maiden ewes is poorer than that of multiparous ewes, and the extent and causes of this difference are not well understood in Australian sheep farming. This study compared the reproductive performance of maiden ewes and multiparous ewes on the same farms and found significant differences in lamb marking rate and reproductive success. Strategies to improve reproductive rate and lamb survival can address the suboptimal reproductive performance of maiden ewes.
Article
Agriculture, Dairy & Animal Science
Serina N. Hancock, Bronwyn E. Clarke, Jen L. Smith, Gavin A. Kearney, Andrew N. Thompson
Summary: The eruption of the first permanent incisors in sheep is crucial in determining the classification of lamb and hogget in Australia, impacting the sale value of animals. This study found that the age of incisor eruption varied among progeny from different Merino sires and occurred earlier for progeny with heavier weights at 12 months of age. Furthermore, differences in weight gain up to 12 months also influenced the age of incisor eruption, with variations in liveweight having a significant effect on the timing of eruption. The study also concluded that the large variation in incisor eruption age between sires was not solely explained by liveweight or stage of maturity at 12 months.
SMALL RUMINANT RESEARCH
(2022)
Article
Agriculture, Dairy & Animal Science
Kirsty Cunningham, Andrew Van Burgel, Khama R. Kelman, Claire M. Macleay, Beth L. Paganoni, Andrew N. Thompson
Summary: Early prediction of lambing dates for ewes can improve their management during pregnancy and lambing. Proximity sensors can be used to measure interactions between ewes and rams during mating, successfully predicting conception and lambing dates. This study demonstrates that proximity sensors are an effective means of predicting lambing dates, which can help improve ewe management and lamb survival.
Article
Agriculture, Dairy & Animal Science
Andrew N. Thompson, Travis Allington, Sarah Blumer, Jo Cameron, Gavin Kearney, Lyndon Kubeil, Amy Lockwood, Jason Trompf, Emma Winslow, Paul Kenyon
Summary: The proportion of triplets among ewes is increasing on sheep farms in Australia due to the use of more fecund genetics and better management practices. A study of sheep producers showed that the mortality rate of triplet-bearing ewes was 6.4%, and the survival rate of triplet-born lambs was 59%. There was variability in the management practices adopted, but no significant differences were found in the mortality rate or lamb survival between different practices. The highest priorities for future research identified by producers were ewe condition score, mob size, feed-on-offer at lambing, and mineral supplementation.
Article
Veterinary Sciences
Tom Clune, Shane Besier, Sam Hair, Serina Hancock, Amy Lockwood, Andrew Thompson, Martina Jelocnik, Caroline Jacobson
Summary: This study investigated the causes of perinatal lamb deaths for lambs born to primiparous ewes in Western Australia. The main causes of death were identified as starvation-mismosthering-exposure, dystocia, and stillbirth. Additionally, a pathogenic strain of Chlamydia pecorum (ST23) was detected in aborted and stillborn lambs on multiple farms.
VETERINARY RESEARCH
(2021)
Article
Veterinary Sciences
S. Hancock, L. Inglis, M. Laurence, D. Miller, A. Thompson
Summary: This study showed that facial action units, activity of the lamb, and time spent with the dam can be used to assess pain in Merino lambs following mulesing, but cannot detect any changes associated with pain relief.
AUSTRALIAN VETERINARY JOURNAL
(2021)