Publications by authors named "Chris Freeman"

The established paradigm assumes that drainage may decrease the vast soil organic carbon (SOC) reservoir in global wetlands. Yet drainage can also promote SOC stabilization by fostering the accrual of metal-bound organic carbon (bound OC) upon oxygen exposure. Here, this emergent mechanism is tested for the first time at a regional scale, using literature data and a nationwide, pairwise survey of drained wetlands across China.

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Soil bacteria are vital to regulate biogeochemical processes in wetlands, however, little is known about the patterns and mechanisms of soil bacterial re-organization during wetland restoration. Here, we used a space-for-time substitution approach and examined the ecological processes that drive soil bacterial assembly from cultivated to restored to natural wetlands. Results showed a decrease of soil bacterial α diversity and increase of bacterial community similarity and bacterial interaction (cooperation vs.

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Article Synopsis
  • Northern peatlands store about 30% of the world’s terrestrial carbon, but recent agricultural activities have led to a loss of 14% to 20% of this carbon, particularly due to conversion to cropland.
  • This study focuses on the impact of rice cultivation on bacterial communities in peatlands, revealing that cultivation decreases certain organic carbon concentrations while increasing the rate of carbon mineralization.
  • Key findings suggest that specific bacterial taxa can help break down phenolic compounds, which traditionally inhibit carbon decomposition, highlighting their importance in managing peatland carbon loss during agricultural practices.
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The Tibetan Plateau, housing 20% of China's wetlands, plays a vital role in the regional carbon cycle. Examining the phenological dynamics of wetland vegetation in response to climate change is crucial for understanding its impact on the ecosystem. Despite this importance, the specific effects of climate change on wetland vegetation phenology in this region remain uncertain.

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Introduction: Prescription opioid use and evidence of the harm caused by these medicines has increased over the past 20-30 years. Despite a number of system level interventions, the opioid crisis has not yet resolved in Australia or globally. Pharmacists are increasingly required to take a proactive, clinical role to fulfil their responsibility for patient outcomes relating to both medication efficacy and safety.

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This paper aims to detect anemia using images of the lip mucosa, where the skin tissue is thin, and to confirm the feasibility of detecting anemia noninvasively and in the home environment using machine learning (ML). Data were collected from 138 patients, including 100 women and 38 men. Six ML algorithms: artificial neural network (ANN), decision tree (DT), k-nearest neighbors (KNN), logistic regression (LR), naive bayes (NB), and support vector machine (SVM) which are widely used in medical applications, were used to classify the collected data.

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Plant invasion can significantly alter the carbon and nitrogen cycles of wetlands, which potentially affects the emission of greenhouse gases (GHGs). The extent of these effects can vary depending on several factors, including the species of invasive plants, their growth patterns, and the climatic conditions prevailing in the wetland. Understanding the global effects of plant invasion on the emission of methane (CH) and nitrous oxide (NO) is crucial for the climate-smart management of wetlands.

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Background: Many people experience withdrawal symptoms when they attempt to stop antidepressants. Withdrawal symptoms are readily misconstrued for relapse or ongoing need for medication, contributing to long-term use (> 12 months). Long-term antidepressant use is increasing internationally yet is not recommended for most people.

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Drop-foot is characterised by an inability to lift the foot, and affects an estimated 3 million people worldwide. Current treatment methods include rigid splints, electromechanical systems, and functional electrical stimulation (FES). However, these all have limitations, with electromechanical systems being bulky and FES leading to muscle fatigue.

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CH emission in the Arctic has large uncertainty due to the lack of mechanistic understanding of the processes. CH oxidation in Arctic soil plays a critical role in the process, whereby removal of up to 90% of CH produced in soils by methanotrophs can occur before it reaches the atmosphere. Previous studies have reported on the importance of rising temperatures in CH oxidation, but because the Arctic is typically an N-limited system, fewer studies on the effects of inorganic nitrogen (N) have been reported.

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Over half of the Earth's wetlands have been reclaimed for agriculture, leading to significant soil P destabilization and leaching risks. To evaluate the effects of agricultural land use on soil P stability, we used sequential P extraction to investigate the long-term effects of wetland cultivation for rice and soybean on soil P fractions, including labile and moderately labile inorganic/organic P (LPi, LPo, MPi, and MPo), and stable P in Northeast China. The results showed that soybean cultivation decreased the total P by 35.

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Approximately 17% of the land worldwide is considered highly vulnerable to non-native plant invasion, which can dramatically alter nutrient cycles and influence greenhouse gas (GHG) emissions in terrestrial and wetland ecosystems. However, a systematic investigation of the impact of non-native plant invasion on GHG dynamics at a global scale has not yet been conducted, making it impossible to predict the exact biological feedback of non-native plant invasion to global climate change. Here, we compiled 273 paired observational cases from 94 peer-reviewed articles to evaluate the effects of plant invasion on GHG emissions and to identify the associated key drivers.

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Objective: Polypharmacy increases the risk of adverse drug events and drug-drug interactions, and contributes to falls, hospital admissions, morbidity and mortality. Veterans with post-traumatic stress disorder often have psychological and physical comorbidities, increasing the likelihood of general and psychotropic polypharmacy. This study investigates the prevalence of general and psychotropic polypharmacy in inpatient veterans with post-traumatic stress disorder, and illustrates potential risks associated with polypharmacy in this population.

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Inland waters (rivers, reservoirs, lakes, ponds, streams) and estuaries are significant emitters of methane (CH ) and nitrous oxide (N O) to the atmosphere, while global estimates of these emissions have been hampered due to the lack of a worldwide comprehensive data set of CH and N O flux components. Here, we synthesize 2997 in-situ flux or concentration measurements of CH and N O from 277 peer-reviewed publications to estimate global CH and N O emissions from inland waters and estuaries. Inland waters including rivers, reservoirs, lakes, and streams together release 95.

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Elevated atmospheric CO may have consequences for methane (CH) emissions from wetlands, yet the magnitude and direction remain unpredictable, because the associated mechanisms have not been fully investigated. Here, we established an in situ macrocosm experiment to compare the effects of elevated CO (700 ppm) on the CH emissions from two wetlands: an intermittently inundated Calamagrostis angustifolia marsh and a permanently inundated Carex lasiocarpa marsh. The elevated CO increased CH emissions by 27.

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Reported high drug use at music festivals coupled with factors such as public urination can lead to the direct release of illicit drugs into the environment. Glastonbury Festival 2019 had 203,000 attendees, its site is intercepted by the Whitelake River providing a direct route for illicit drug pollution into the local environment. We tested for popular illicit drugs such as cocaine and MDMA in the river upstream and downstream of the festival site as well as in the neighbouring Redlake River.

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Codeine is one of the most commonly used opioid analgesics. Significant codeine-related morbidity and mortality prompted regulatory responses, with the up-scheduling of codeine combination analgesics to prescription-only medicines implemented in Australia in February 2018. This study investigated the impact of codeine up-scheduling on the number of codeine and other (noncodeine) prescription opioid-related emergency department (ED) presentations in a large metropolitan tertiary hospital.

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The development and testing of a Faraday cup fast-ion loss detector capable of measuring sub 100 keV particles is documented. Such measurement capabilities play an important role in the assessment of particle confinement of nuclear fusion experiments. The detector is manufactured using thin-film deposition techniques, building upon previous work using discrete foils.

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Background: Training of the upper limb (UL) is limited in stroke rehabilitation, and about 50% of stroke survivors do not regain useful function in their upper limb.

Objectives: This study explored what factors affect rehabilitation and use of upper limb after stroke from a stroke survivor and healthcare professional perspective to better understand low engagement in UL rehabilitation in the chronic stages of stroke.

Method: Eight chronic stroke survivors and 21 healthcare professionals took part in semi-structured interviews or in one of three focus groups, respectively.

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The original version of this Article contained an error in the Acknowledgements, which incorrectly omitted from the end the following: 'In particular, we thank the staff of the Centre for Ecology and Hydrology (including A. Burden, N. Ostle and C.

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Peatlands store 1/3 of global soil carbon, destabilisation of which contributes much to the recent increase in DOC (dissolved organic carbon) in freshwater ecosystems. One suggested mechanism for the enhanced decomposition of peat and the releases of DOC is recovery from acidification. However, no biological role in the process has yet been identified.

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This paper presents research into a user-friendly electronic sleeve (e-sleeve) with integrated electrodes in an array for wearable healthcare. The electrode array was directly printed onto an everyday clothing fabric using screen printing. The fabric properties and designed structures of the e-sleeve were assessed and refined through interaction with end users.

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