https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55395 Wed 29 May 2024 11:15:26 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50091 Wed 28 Feb 2024 15:34:08 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54317 Wed 28 Feb 2024 15:03:22 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46301 −1 lamb meat, and 0.28 pg g(⁻¹-2.75 ng g⁻¹ bovine meat), heavy metals (0.5–33.0 mg kg⁻¹ lettuce), organochlorine pesticides (11–199 μg g⁻¹ carrots), cyclodienes, hexachlorocyclohexanes, hexabromocyclododecane (2–3 times higher than in conventionally produced porcine meat), hexachlorobenzene (1.38–14.49 ng g⁻¹ fat in milk), and non-brominated flame retardants (1.3–3.2 times higher than in conventional produce of greenhouse-grown tomato and cucumber). Moreover, some pollutants like per- and polyfluoroalkyl substances with a longer half-life (1.50–9.10 yrs) are reported to occur in several organic products. In fact, several legacy persistent organic pollutants are known for their significant trophic magnification in an urban terrestrial ecosystem. In addition, many plant functionalities are adversely affected in organic farming. Therefore, the long-term usage of organic products containing such pollutants poses a significant threat to human health. The major limitation in organic livestock production is the severe shortage of organic feed. Several variable standards and technical regulations set by the government and private agencies are the major obstacles in the global marketing of organic products. The present review critically addresses the impact of organic farming on hidden risks due to the use of composts as the amendment resources that enhance the phytoaccumulation and trophic transfer of pollutants, the functional diversity of the ecosystems, and poor harmonization among the policies and regulations in different countries for organic farming. The future directions of research have been suggested to mitigate unintended flows of pollutants into the organic products.]]> Wed 28 Feb 2024 14:51:33 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51986 Wed 28 Feb 2024 14:50:44 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45995 P > S > C. While in the black soil, it suggested that there is increasing microbial demand for only N and S. In the warmer months (May to Sep.), the microbial nutrient demands in the two soils were opposite to the colder months. The results suggested differential changes in microbial nutrient limitation with warming, which has significant implications for the carbon stocks management in farmlands under the changing global climate.]]> Wed 28 Feb 2024 14:47:23 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53252 Wed 28 Feb 2024 14:46:56 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:56059 1 yr) to medium-term (1–3 yrs) chicken litter-fertilized soils reached a maximum of 11.60 for CTC, 6.50 for OTC, 0.80 for DC, 3.70 for CIP, and 3.60 for ENR, but decreased in long-term (10–30 yrs) fertilized soils. Ecological risk assessment revealed a Risk Quotient (RQ) of ≤0.10 for CTC, OTC, and DC in all soils, while an average risk (RQ >0.10–<1.0) was evident with CIP and ENR in short-term and medium-term fertilized soils. Antibiotic resistance genes (ARGs), including tetA, tetB, qnrA, qnrB and qnrS were detected in most of the chicken litter samples and litter-fertilized soils. Thus, it is critical to develop and adopt effective mitigation strategies before applying chicken litter in farmlands to decrease VAs and ARGs, reducing their associated risks to public health and ecosystems in India considering ‘One Health’ approach. Future investigations on the occurrence of other VAs and ARGs in soils fertilized with poultry litter at regional scale are required for effective risk mitigation of the widely used VAs.]]> Wed 24 Jul 2024 12:20:29 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51825 Wed 20 Sep 2023 10:07:10 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55745 Wed 19 Jun 2024 15:38:25 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55746 300% after 1 week) under mixotrophic conditions. While transitioning to the second week, there was a change in growth pattern, with >600% increase in chlorophyll content and minor pH alterations, indicating the phenotypic response to the synergistic effect of nutritional mode during wastewater treatment. Both the strains showed a similar removal (70–80%) of both organic and inorganic carbon present in the wastewater, while the removal of nitrogen and phosphate (80–90%) was significant during mixotrophy. Metabolic analysis revealed the prominence of key pathways such as CO2 fixation, nitrogen assimilation, and amino acid metabolism under mixotrophic conditions of an open system. Especially, strain MAS1 exhibited elevated expression of organic acids, suggesting their crucial role in nutrient uptake from winery effluents during mixotrophy. Thus, our study demonstrates that a synergy of wastewater environment and nutritional mode enhances phenotypic trait expression in microalgae to improve metabolic flexibility and sustainable biomass production.]]> Wed 19 Jun 2024 15:37:26 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53573 Wed 15 May 2024 15:05:18 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50272 Wed 12 Jul 2023 14:11:21 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54681 Wed 10 Jul 2024 11:57:05 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39312 Proteobacteria and Actinobacteria were identified as the two dominant phyla in the remediation of diesel contaminated soil. Metagenomics analysis revealed that the preferred metabolic pathway of nitrogen was from ammonium to glutamate via glutamine, and the enzymes governing this transformation were glutamine synthetase and glutamate synthetase; while in nitrate based amendment, the conversion from nitrite to ammonium was restrained by the low abundance of nitrite reductase enzyme and therefore retarded the TPH degradation rate. It is concluded that during the process of nitrogen enhanced bioremediation, the most efficient nitrogen cycling direction was from ammonium to glutamine, then to glutamate, and finally joined with carbon metabolism after transforming to 2-oxoglutarate.]]> Wed 10 Aug 2022 11:08:14 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48292 90%) to the overall emergy and were much lower than in passive and active treatment systems. The microalgal treatment required 2–15 times more renewable inputs than the other two treatment systems. Additionally, the emergy indices indicated higher environmental loading ratio and lower per cent renewability, suggesting the need for adequate renewable inputs in the immobilized microalgal system. The emergy yield ratio for biodiesel production from the microalgal biomass after AMD treatment was >1.0, which indicates a better emergy return on total emergy spent. Based on greenhouse gas emissions, carbon footprint analysis (CFA), was performed using default emission factors, in accordance with the IPCC standards and the National Greenhouse Energy Reporting (NGER) program of Australia. Interestingly, CFA of acid-adapted microalgal technology revealed significant greenhouse gas emissions due to usage of various construction materials as per IPCC, while SCOPE 2 emissions from purchased electricity were evident as per NGER. Our findings indicate that the immobilized microalgal technology is highly sustainable in AMD treatment, and its potential could be realized further by including solar energy into the overall treatment system.]]> Wed 07 Feb 2024 14:55:19 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52578 50% and enhance valorization of residual biomass for value-added products compared to open loop approach. Integrating solar technologies in closed loop system further reduces GHG emissions by 99% and aligns with 11 UN sustainable development goals, making it a suitable model for a zero-waste and low-carbon circular bioeconomy.]]> Wed 07 Feb 2024 14:41:00 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50508 Wed 07 Feb 2024 14:28:38 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44026 Wed 05 Oct 2022 15:18:31 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55896 Wed 03 Jul 2024 15:06:56 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55217 Wed 01 May 2024 10:47:30 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54553 Tue 27 Feb 2024 20:46:24 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54546 Tue 27 Feb 2024 20:42:03 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54422 Tue 27 Feb 2024 13:57:48 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54438 Tue 27 Feb 2024 13:56:17 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39825 5 mm. However, after 7 years in the garden, owing to natural degradation, weathering, or abrasion, microplastics are released. We categorize the plastic fragments into different groups, 5 mm–0.75 mm, 0.75 mm–100 μm, and 100–0.8 μm, using filters such as kitchenware, meaning we can collect microplastics in our gardens by ourselves. We then characterized the plastics using Raman image mapping and a logic-based algorithm to increase the signal-to-noise ratio and the image certainty. This is because the signal- to-noise ratio from a single Raman spectrum, or even from an individual peak, is significantly less than that from a spectrum matrix of Raman mapping (such as 1 vs. 50 × 50) that contains 2,500 spectra, from the statistical point of view. From the 10 g soil we sampled, we could detect the microplastics, including large (5 mm–100 μm) fragments and small (<100 μm) ones, suggesting the degradation fate of plastics in the gardens. Overall, these results warn us that we must be careful when we do gardening, including selection of plastic items for gardens.]]> Tue 26 Jul 2022 14:21:50 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49607 Tue 23 May 2023 17:32:07 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:43866 Tue 23 Jul 2024 17:25:22 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51518 Tue 23 Jul 2024 17:06:02 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50961 Tue 23 Jul 2024 17:03:52 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53297 Tue 21 Nov 2023 12:03:36 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54387 Tue 20 Feb 2024 20:45:23 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52591 Tue 17 Oct 2023 15:56:09 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55146 Tue 16 Apr 2024 15:15:23 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46333 Daphnia carinata) using a battery of comprehensive toxicity tests, including a 48 h acute and a 21-day chronic assays. The survival, growth, and reproduction of D. carinata were monitored over a 21-day life cycle. PFOS exhibited higher toxicity than PFOA. The 48 h LC₅₀ values (confidence interval) based on acute toxicity for PFOA and PFOS were 78.2 (54.9–105) mg L⁻¹ and 8.8 (6.4–11.6) mg L⁻¹, respectively. Chronic exposure to PFOS for 21 days displayed mortality and reproductive defects in D. carinata at a concentration as low as 0.001 mg L⁻¹. Genotoxicity assessment using comet assay revealed that exposure for 96 h to PFOS at 1 and 10.0 mg L⁻¹ significantly damaged the organism's genetic makeup. The results of this study have great implications for risk assessment of PFOS and PFOA in aquatic ecosystems, given the potential of PFOS to pose a risk to Daphnia even at lower concentrations (1 μg L⁻¹).]]> Tue 15 Nov 2022 12:49:03 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46296 Tue 15 Nov 2022 09:18:54 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52779 Tue 14 Nov 2023 14:21:49 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47997 Tue 14 Feb 2023 16:15:07 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51641 Tue 12 Sep 2023 20:15:54 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51611 92%), PO43−-P (>89%) and COD (>84%) as well as increased production of ROS and neutral lipids, indicating their significant mutualistic interactions with the native bacterial communities for efficient bioremediation of wastewaters. Analysis of 16S rRNA gene-based community data in wastewaters revealed selective enrichment of Firmicutes and Actinobacteria, resulting in enhanced microalgal growth and nutrient removal. The findings of this novel study suggest that microalgal–bacterial co-cultures mediate interspecies interactions for a shift in population dynamics of the indigenous bacteria in wastewaters to facilitate enhanced bioremediation of effluents with sustainable production of biomass and biodiesel.]]> Tue 12 Sep 2023 13:42:26 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44296 1.5-fold). Strain MAS1 grown at pH 3.5 showed a reduction (1.5-fold) in carbohydrates while strain MAS3 exhibited a 17-fold increase in carbohydrates as compared to their growth at pH 6.7. However, lower levels of biologically excess concentrations of the selected transition metals at pH 6.7 unveiled positive or no effect on physiology and biochemistry in microalgal strains, whereas growth with higher metal concentrations at this pH resulted in decreased chlorophyll content. Although the bioavailability of free-metal ions is higher at pH 3.5, as revealed by Visual MINTEQ model, no adverse effect was observed on chlorophyll content in cells grown at pH 3.5 than at pH 6.7. Furthermore, increasing concentrations of Fe, Mn and Zn significantly upregulated the carbohydrate metabolism, but not protein and lipid synthesis, in both strains at pH 3.5 as compared to their growth at pH 6.7. Overall, the impact of pH 3.5 on growth response suggested that acclimation of microalgal strains to acidic pH alleviates metal toxicity by triggering physiological and biochemical changes in microalgae for their survival.]]> Tue 11 Oct 2022 16:05:47 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39314 Variovorax paradoxus IS1, all isolated from wastewaters. Tetradesmus obliquus IS2 and Coelastrella sp. IS3 were further selected for gaining insights into physiological changes, including those of metabolomes in consortia involving V. paradoxus IS1. The distinct parameters investigated were pigments (chlorophyll a, b, and carotenoids), reactive oxygen species (ROS), lipids and metabolites that are implicated in major metabolic pathways. There was a significant increase (>1.2-fold) in pigments, viz., chlorophyll a, b and carotenoids, decrease in ROS and an enhanced lipid yield (>2-fold) in consortia than in individual cultures. In addition, the differential regulation of cellular metabolites such as sugars, amino acids, organic acids and phytohormones was distinct among the two microalgal-bacterial consortia. Our results thus indicate that the selected microalgal strains, T. obliquus IS2 and Coelastrella sp. IS3, developed efficient consortia with V. paradoxus IS1 by effecting the required physiological changes, including metabolomics. Such microalgal-bacterial consortia could largely be used in wastewater treatment and for production of value-added metabolites.]]> Tue 09 Aug 2022 14:26:20 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39230 −1 of As(V)]. Besides, it was observed that available soil phosphorus could positively affect the relative content of water-soluble, exchangeable and carbonate-bound arsenic. In the kinetics experiment, both the Michaelis-Menten constant (K_m) and maximum reaction velocity (V_max) of ALP increased with increasing As(V) concentration under four months ageing for each size aggregate. Multiple linear stepwise regression analysis between k_cat and the relative content of arsenic fraction indicated that carbonate-bound arsenic is the main fraction that inhibited the k_cat for macroaggregates (> 0.25 mm size). For soil aggregates of 0.1–0.25 mm size, k_cat increased with an increase in arsenic residual fraction. As for aggregates <0.1 mm size, Fe and Mn oxide-bound fraction is the main fraction that inhibited the k_cat. Overall, this study suggests carbonate-bound and Fe and Mn oxide-bound arsenic fractions could decrease the ALP activities via a decrease in the catalytic efficiency in macroaggregates and <0.1 mm size aggregates, respectively. Besides, available phosphorus should be considered as the main factor when assessing As biotoxicity and mobility.]]> Tue 09 Aug 2022 14:08:44 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55499 Tue 04 Jun 2024 20:56:10 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55852 Tue 02 Jul 2024 15:04:19 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45354 Thu 27 Oct 2022 11:25:35 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45300 Thu 27 Oct 2022 09:05:37 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45331 Thu 27 Oct 2022 09:05:11 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:38961 -1) in agricultural soils. The half maximum inhibitory concentration (IC₅₀) values were 4.21 ± 0.29 and 4.02 ± 0.95, respectively, whereas the maximum health risk index (HRI) was 3.85 ± 0.049 and 5.33 ± 0.271, respectively, for Mustang and Lancer. In other words, the malondialdehyde content increased significantly in Mustang (around five-fold) and Lancer (around four-fold) compared with the control treatment. Results revealed that Cd content was well above the acceptable limit (HRI >1) in the two cultivars when exposed to different levels of Cd stress. The tolerant cultivar (Mustang) has potential to chelate Cd in the nonedible parts of plants in variable fractions and can be used efficiently to improve growth and macro- and micro-nutrients content while reducing Cd concentration in plants in Cd-contaminated soil. It can also diminish the HRI, which may help to protect humans from Cd risks. The two cultivars' nutrient availability and sorption capacity significantly shape their survival and adaptability under Cd stress. Based on what is documented in the current study, we can conclude that Mustang is more tolerant and poses fewer health hazards to people than Lancer because of its capacity to maintain grain macro- and micro-nutrients under Cd stress.]]> Thu 17 Mar 2022 14:21:24 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50864 Thu 17 Aug 2023 11:28:32 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48429 Thu 16 Mar 2023 14:18:03 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50083 Thu 13 Jul 2023 10:43:20 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50088  twofold) than ammonium, while the bacterial strain cultured with ammonium alone exhibited a > 1.3-fold increase in growth than nitrate. Co-culturing performed higher growth at combined nitrate and ammonium supply as compared to the single cultures. The same ratio of nitrate and ammonium resulted in superior growth of microalgae (> 1.7-fold) and the bacterium (> 4.1-fold) as compared to the monocultures. Uptake of NO3–N, NH4–N and PO4–P by monocultures or co-cultures depended on the ratio of two inorganic nitrogen sources used. The composition of organic acids, amino acids and simple sugars in exudates from monocultures varied with the ratios of nitrate and ammonium in the medium. Thus, the present novel study demonstrates that the release of exudates is affected both qualitatively and quantitatively during mutualistic interactions in microalgal‒bacterial co-cultures under the impact of inorganic nitrogen sources. Our results suggest that the variables such as inorganic nitrogen sources and extracellular metabolites released need to be considered while using co-cultures for effective bioremediation of wastewaters.]]> Thu 13 Jul 2023 10:13:24 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48156 Thu 09 Mar 2023 09:44:46 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39473 Eisenia fetida was investigated. The results of this study indicate that selected parabens do not negatively affect the survival, growth, and reproduction of Eisenia fetida up to 1000 mg Kg⁻¹ concentration. Further, these parabens (0–1000 mg Kg⁻¹) exhibited a low persistence in soil with more than 90 % disappearing within three days. In contrast, only 16–54 % degradation of parabens occurred in frozen soil suggesting a microbial role in parabens degradation. This study demonstrates that methyl-, propyl-, and butyl parabens degrade rapidly in the terrestrial environment and therefore, are unlikely to pose a threat to species such as Eisenia fetida. To our knowledge, this is the first report on the toxicity of parabens to earthworms.]]> Thu 09 Jun 2022 09:50:26 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39279 max) ranged from 0.29 to 2.18 x 10⁻² mM g⁻¹ soil h⁻¹ and declined by 42.30%–71.01% under PTH stress. The Michaelis constant (K_m) values ranged between 2.90 and 14.17 x 10⁻² mM and exhibited three forms including unchanged, increased (38.16–242.65%) and decreased (13.41–39.23%) when exposed to PTH. Based on the changes in two kinetic parameters, the inhibition of PTH on FDA–H was classified as three types, i.e., noncompetitive, linear mixed and uncompetitive inhibition. The competitive inhibition constant (K_ic) and noncompetitive constant (K_iu) ranged from 0.064 to 0.447 mM and 0.209 to 0.723 mM, respectively, which were larger than the Km in values. The catalytic efficiency (V_max/K_m) of FDA–H is a sensitive integrated parameter to evaluate the PTH toxicity due to the higher inhibition ratio than the V_max. The PTH toxicity to FDA–H decreased with increase of soil organic matter and total nitrogen contents. This implied that the PTH toxicity could be alleviated by an increasing content of soil organic matter due to its buffering capacity to PTH. Besides, soils with a higher content of total nitrogen could provide stable environment for FDA–H to maintain its functionality under PTH pollution. Thus, the results of this study have great implications to the risk assessment of parathion in soils.]]> Thu 02 Jun 2022 15:12:26 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46837 Thu 01 Dec 2022 15:08:23 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49212 Sun 07 May 2023 09:30:32 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55796 Sat 22 Jun 2024 12:47:32 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55780 Sat 22 Jun 2024 12:39:26 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52264 Sat 07 Oct 2023 12:46:52 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45777 200%) in the release of exopolysaccharides that facilitated soil aggregate stability. The increase in soil pH was about one unit (from 4.8 to 5.6 in soil A or 4.3–5.3 in soil B) under the influence of individual or co-cultures of the microalgal strains after 90 days. Algalized acid soils exhibited a significant increase in carbon content (29–57%), dehydrogenase activity (>500%) and production of indole acetic acid (200–500%). Thus, the present study reports for the first time on the great potential of green microalgae in amelioration of acid soils besides improving soil health and fertility.]]> Sat 05 Nov 2022 12:27:56 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45523 Mon 31 Oct 2022 14:16:56 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50626 100%) for children and HQ > 1 for both children and adults, suggesting their potential acute and chronic health hazards. The present study, for the first time, provides health awareness about the consumption of pesticide-contaminated leafy vegetables grown in urban backyard garden soils.]]> Mon 31 Jul 2023 15:31:30 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52836 Mon 30 Oct 2023 09:41:19 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52822 Mon 30 Oct 2023 08:43:15 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51252 45° for tested four black soils, indicating that atrazine residue had the greatest P-limitation on soil microorganisms. Interestingly, microbial C- and P-limitations with different atrazine concentrations showed a strong linear relationship, especially in Qiqihar and Nongan soils. Atrazine treatment significantly negatively affected microbial metabolic limitation. Soil properties and EES interaction explained up to 88.2% for microbial C-/P-limitation. In conclusion, this study confirms the EES as a useful method in evaluating the effects of pesticides on microbial metabolic limitations.]]> Mon 28 Aug 2023 12:28:34 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53429 Mon 27 Nov 2023 11:40:44 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51982 Mon 25 Sep 2023 13:54:41 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44755 Mon 24 Oct 2022 08:42:50 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53929 Mon 22 Jan 2024 16:50:21 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53775 Mon 15 Jan 2024 10:09:33 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46196 Mon 14 Nov 2022 11:15:57 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54729 Mon 11 Mar 2024 14:11:20 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50223 Mon 10 Jul 2023 10:44:41 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52351 Mon 09 Oct 2023 15:04:08 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52333 Mon 09 Oct 2023 14:50:11 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46934 50% reduction in juvenile production at 0.5% microplastics concentration in soil. Also, significant genotoxicity in terms of DNA damage was observed in the F0 and F1 earthworms. Chemical analysis of microplastic-exposed soils showed the presence of several benzene derivatives that are associated with polystyrene particles. Our study, for the first time to our knowledge, demonstrated the long-term adverse effects on earthworms of polystyrene microplastics even at environmentally relevant concentrations. The results have significant implications for risk assessment of polystyrene microplastics to soil biota.]]> Mon 06 May 2024 14:06:56 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54105 Mon 05 Feb 2024 09:57:42 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46807 Mon 05 Dec 2022 08:51:51 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55479 1), indicating the lower quality of fruits due to the higher amount of lead contents. The calculated incremental lifetime cancer risks (ILCRs) of cadmium (Cd) and Pb in banana, apple, grape, orange, and pomegranate for both children and i adults were exceeded the threshold limit (ILCR>10−6), which suggests that the consumption of heavy metal contaminated fruits poses potential cancer risks to the human health. In contrast, target hazard quotients (THQs) and chronic hazard index (HIs) values of all heavy metals were in the range of (THQ: 2.4 × 10−6–0.76; 6.5 × 10−7–0.20) and (HI:0.03–0.49; 0.01–0.13), respectively, for children and adults, which were below the acceptable limit (THQ<1), indicating no potential non-cancer risk for both consumer groups. These findings might help the policymakers and regulatory bodies concerned to apply control measures through monitoring the quality of locally grown or imported fruits available in supermarkets for human consumption.]]> Mon 03 Jun 2024 16:12:44 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39211 2 = 0.873), oxides of Al (R² = 0.361) and Fe (R² = 0.126), and contents of clay (R² = 0.061) and silt (R² = 0.432) were positively correlated with the distribution coefficient (K_d) of glyphosate, while alkaline pH (R² = −0.389) and sand content (R² = −0.343) negatively correlated with the K_d values. Well-decomposed soil OM, consisting of C–H and Cdouble bondO functional groups, enhanced glyphosate sorption, whereas partially decomposed/undecomposed OM facilitated desorption process. Desorption of glyphosate was favoured in seven of nine selected soils due to adverse hysteresis effects (HI = 0.74–1.0). The higher values of leachability index (0.31–1.0) and groundwater ubiquity score (1.60–3.44) calculated for the urban soils indicated the great leaching potential of glyphosate from soil surface to waterbodies. Use of glyphosate on impermeable surfaces might directly contaminate water sources and affect potability of water, non-target biota, and food safety. The calculated values of cancer risk (10⁻⁸‒10⁻¹²) and hazard quotient (1.47 x 10⁻⁶‒4.12 x 10⁻⁶) suggested that the human exposure to glyphosate-contaminated soils through dermal, ingestion and inhalation pathways might cause negligible or no carcinogenic and non-carcinogenic risks to humans. Therefore, glyphosate should be applied judiciously at recommended concentrations in the urban landscapes, mainly on impervious surfaces, to minimize its health impacts in humans and environment.]]> Fri 27 May 2022 10:34:27 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51894 Fri 22 Sep 2023 09:22:31 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54933 SAs (manure: 0.90‒73; soil: 0.20‒48.40) > QNs (manure: nd‒3.60; soil: nd‒1.80) > MLs (manure: nd‒1.50; soil: nd‒0.90). Poultry manure-applied farmlands exhibited the highest antibiotic contamination levels, with total antibiotic concentrations surpassing the ecotoxicological effect trigger value of 100 μg kg−1 set by the Steering Committee of the Veterinary International Committee on Harmonization, highlighting the potential hazard of VAs to the soil ecosystem. The translocation of VAs in vegetables was in the order: leaf > root > fruit, and bioaccumulation of 0.10‒3.90 μg kg−1 was recorded. Notably, the calculated risk quotients of antibiotics in vegetables were ˂1, indicating the negligible risk to human health. Overall, our study unveils a concerning state of VAs pollution in organic farmlands in India that warrants special attention, as it may contribute to the proliferation of antibiotic resistance.]]> Fri 22 Mar 2024 14:33:11 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54930 Fri 22 Mar 2024 14:32:28 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48976 Fri 21 Apr 2023 09:22:46 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52662 Fri 20 Oct 2023 09:09:08 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47455 Fri 20 Jan 2023 17:38:34 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53142 Fri 17 Nov 2023 12:08:21 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53105 Fri 17 Nov 2023 11:29:40 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39741 Fri 17 Jun 2022 18:20:04 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39726 Fri 17 Jun 2022 17:38:05 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50286 Fri 14 Jul 2023 09:21:20 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49357 Fri 12 May 2023 12:35:22 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51550 Fri 08 Sep 2023 15:06:19 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50216 Fri 07 Jul 2023 12:23:35 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49109 2) over alkaline soils (1 < na < 2), and the adsorption process tended to be irreversible (RL close to 0). The solid binding force (kL) of Sb to alkaline soils is less than that of acidic and neutral soils; therefore, alkaline soils pose a higher risk of secondary pollution. Variation partitioning analysis showed that water-soluble Sb was the predominant factor responsible for the observed decrease in DHA. Ecological doses (ED10) based on water-soluble Sb fluctuated from 3.4 to 360 mg kg−1 in soils. Soil properties, such as pH, total phosphorus, amorphous Fe, and clay content, played a crucial role in Sb toxicity to DHA. This study highlighted the importance of water-soluble Sb while evaluating the Sb toxicity in soils. Thus, the study is useful in risk assessment and remediation of Sb-contaminated soils.]]> Fri 05 May 2023 11:32:09 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52970 Fri 03 Nov 2023 15:30:26 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55263 Fri 03 May 2024 15:30:38 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39315 −1 soil caused enhanced uptake of PFOS and PFOA in earthworms, and a significant reduction in their reproduction. These results have significant implications for risk assessment of MP in soil.]]> Fri 03 Jun 2022 15:21:27 AEST ]]>