Browse Articles
Discover research articles across all indexed journals
Enhancing water quality and well-being of Penaeus vannamei (Boone, 1931) in Inland saline systems using mixed biochar amendments
AbstractAn experiment was conducted for 60 days in a 500L capacity FRP tank containing inland ground saline water (fortified to a level of 50% potassium) with one control (sediment) and three treatments; T1(Paddy Straw Biochar (PSB) in sediment), T2 (Banana Peduncle Biochar (BPB) in sediment), and T3 (PSB + BPB in sediment). Biochar (100 g) was amended with sediment (25 kg) at 9 tons/ha. Shrimps of average weight 5 ± 0.03 g were stocked at 60 juveniles/m3 and were fed at satiation levels using commercially available feed. Compared to control, in biochar contained treatments the ammonia levels were reduced, the pH, alkalinity, calcium-magnesium ratio, and potassium in water, were increased significantly. Growth metrics reveal a significant increase in final body weight, weight gain percentage, PER, HPSI, SGR, and reduced FCR (within 1–1.26) in biochar-treated groups with the highest survivability (92%) was observed in T3, which is mixed biochar amended sediment. At the end of the experiment, shrimp organs (hepatopancreas, gills, and muscles) and serum were sampled for tissue enzymes and serum profiles, respectively. The mean levels of lipase, amylase and protease varied significantly, and in biochar treated groups significant reduction in the activities of oxidative stress enzymes (SOD and CAT in Hepatopancreas) were recorded in comparison to control. For the serum, higher hemocyanin (0.33 ± 0.01mMolL-1) was observed in mixed biochar amended treatment (T3) and the least in control. In addition, the glucose level in the serum was significantly dropped in biochar-amended groups indicating reduced stress levels, while it increased in control. T3 was found to be the best, among all, in improving growth performance and maintaining the water quality. Even though biochar-amended treatments demonstrated positive outcomes regarding inland saline water quality, growth metrics, and well-being of the P. vannamei compared to control, a deeper analysis is necessary to understand the underlying mechanisms determining these beneficial effects of biochar.
Wind energy assessment and hybrid micro-grid optimization for selected regions of Saudi Arabia
Association between allergic diseases and mucosal healing in ulcerative colitis
Otolith chemistry suggests population heterogeneity within a genetically homogeneous Indian scad population along Indian coast
AbstractThe Indian scad, Decapterus russelli is one of the most exploited pelagic resources of India. Population genetic analyses using mitochondrial and nuclear markers indicated a lack of genetic structuring among populations from Indian waters. As this species is highly migratory, it is also important to establish the environmental influence on its population structure. In the present study, the whole sagittal otolith composition was analysed using Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) to assess spatial distribution of D. russelli collected from 4 sites along the Indian coast. Elemental ratios (Ba/Ca, Fe/Ca, K/Ca, Mg/Ca, Na/Ca, Sr/Ca and Zn/Ca) were analysed using univariate and multivariate statistics to determine whether this chemical signature can provide insight into the adaptive patterns. All element/Ca ratios are found to be significantly different between the four sampling locations (ANOVA, p < 0.05; MANOVA, p < 0.05). Five of the element/Ca ratios were found to be significantly different when the data was analysed coastwise (ANOVA, p < 0.05; MANOVA, p < 0.05). The LDA plot also showed the spatial heterogeneity of Element/Ca ratios between the four sampling sites, but some overlaps were also observed, reflecting the migratory ability of the species. This basic information on spatial ecology is required for formulating effective management and conservation strategies for the species.
Identifying ADME-related gene signature for immune landscape and prognosis in KIRC by single-cell and spatial transcriptome analysis
Development of a new solar system integrating photovoltaic and thermoelectric modules with paraffin-based nanomaterials
Assessment of adequacy and determinants of HIV related knowledge among senior school students in public schools in Abakaliki Southeast Nigeria
The analysis of dance teaching system in deep residual network fusing gated recurrent unit based on artificial intelligence
Genetic associations of plasma metabolites with immune cells in hyperthyroidism revealed by Mendelian randomization and GWAS-sc-eQTLs xQTLbiolinks analysis
Airway management and functional outcomes in intubated patients with ischemic stroke
Egg consumption, sleep, and mental health status among women with type II diabetes
Higher spatial resolution is not always better: evaluating satellite-sensed sea surface temperature products for a west Pacific coral reef system
Abstract As marine heatwaves and mass coral bleaching events rise in frequency and severity, there is an increasing need for high-resolution satellite products that accurately predict reef thermal environments over large spatio-temporal scales. Deciding which global sea surface temperature (SST) dataset to use for research or management depends in part on the desired spatial resolution. Here, we evaluate two SST datasets – the lower-resolution CoralTemp v3.1 (0.05° ~ 5 km grid) and the Multiscale Ultra-high Resolution MUR v4.1 (0.01° ~ 1 km grid) – in their ability to predict in situ reef thermal environments (nightly mean and daily maximum) and the severity of past bleaching in Palau, western Pacific Ocean. We expected higher-resolution data to improve prediction accuracy, yet CoralTemp data explained 10% additional variability of in situ temperatures and 70% additional variance in past bleaching. This likely relates to differential data protocols; despite MUR using a higher spatial resolution grid, CoralTemp achieves higher raw satellite observation density in coastal areas by utilising geostationary satellites. MUR SSTs were also consistently more variable. These results reinforce calls to develop more accurate high-resolution SST products for coral reefs. Our paper demonstrates that higher spatial resolution SST data is not necessarily better at predicting in situ thermal environments of coral reefs and local marine heatwave impacts.
Multiple magma recharges over prolonged period ultimately trigger eruptions at Vulcano, Aeolian Islands
Alterations in cerebral perfusion and corresponding brain functional networks in systemic lupus erythematosus with cognitive impairment
Tryptophan metabolism-related gene CYP1B1 serves as a shared biomarker for both Parkinson’s disease and insomnia
Identification and validation of a metabolic-related gene risk model predicting the prognosis of lung, colon, and breast cancers
Improved properties of hybrid Al-CNTs via h-BNs coated with ag and ni for ball bearings
Abstract Ball bearings face numerous challenges under harsh operating conditions of elevated pressure between the balls and other contacting parts of the bearing like drop in tribological properties. To address these challenges, this paper presents the first successful experimental investigation of incorporating an innovative hexagonal boron nitride (h-BN) into Aluminum-Carbon nanotube (Al-0.6 wt% CNTs) nanocomposites. This was achieved using electroless chemical deposition technique to coat the materials with silver (Ag) and nickel (Ni), improving the wettability and dispersion between the matrix and reinforcement. Various h-BN ratios (2, 4, 6, 8 and 10 wt%) are incorporated and consolidated through high-energy ball milling and hot compaction techniques. The produced samples were tested and analyzed physically, mechanically, tribologically, and microstructurally. X-ray diffraction (XRD) and scanning electron microscope (SEM) analyses were used to explore the new morphologies and structures. The study delves into density, hardness, and wear resistance. The optimal h-BN content is determined to be 8 wt%, enhancing wettability and dispersion within the Al-CNTs matrix. Thus, the properties of hardness, compressive strength, wear rate, and COF at 8 wt% of h-BN content were enhanced by 105%, 60%, 74.5%, and 78.5%, respectively, compared to pure Al. This is due to the uniform scattering of h-BN nanoparticles across the entire surface, despite a significant decrease in relative density. In conclusion, the combination of mechanical alloying, electroless deposition, and hot compaction techniques proves to be effective in producing Al-CNTs/h-BN nanocomposites coated with Ag and Ni nanoparticles.