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182 articles for “Higher Concentrations”
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Research ArticleOpen accessIn the abstractTrace Elements in Fertilizers Used in PeruVíctor Gómez, Mauricio Molina-Roco, Elder Chichipe, Eli Morales RojasFertilizers provide essential nutrients for crops, however, they may also inadvertently provide trace elements that in certain concentrations represent a risk to the soil and the food chain. The objective of this research was to determine the concentrations of Cd, Pb, Cu, and Zn in the most common fertilizers used in Peruvian agriculture. Twenty-one products including inorganic, organic mineral, and … …OnLine Journal of Biological Sciences, Vol. 23, Issue 2 · 10 Apr 2023 · 6,440 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvaluation of Japanese Quail Egg-Yolk Extender in Cryopreservation of Cockerel SemenRantloko Rolly Maapola, Khathutshelo Agree Nephawe, Tshimangadzo Lucky Nedambale et al.The purpose of this study was to examine the effects of quail egg yolk extenders in the cryopreservation of cockerel semen. Ten Venda cockerels were chosen randomly and semen was collected twice a week with a two-day rest period using an abdominal massage technique. Immediately following semen collection, semen samples were evaluated for microscopic parameters (sperm cell motility, viability, morphology, … …American Journal of Animal and Veterinary Sciences, Vol. 18, Issue 1 · 25 Mar 2023 · 5,638 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Metal Ions on The Functional Properties of Taro Protein IsolateYouru Huang, Yingtong Li, Zheng Zhang, Maoqiang ZhengThis study investigated the effects of metal ion species and concentrations on the functional properties of taro protein isolate (TPI), extracted from Colocasia esculenta corms. The results demonstrated that metal salt solutions could modulate the unfolding and aggregation of TPI, thereby altering its protein-protein and protein-water interactions and significantly affecting the functional properties. When monovalent cation concentration [M+] was less … …American Journal of Biochemistry and Biotechnology, Vol. 21, Issue 3 · 6 Jan 2026 · 2,012 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Temperature Change and Estradiol Levels on Cattle Oocytes Developmental Competency: Comparing X-Sexed and Non-Sexed Sperm Following in vitro FertilizationMaleke Dimpho Sebopela, Masindi Lottus Mphaphathi et al.The study aimed to investigate the effects of temperature change and estradiol (E2) hormone level on In Vitro Maturation (IVM) and fertilization of cattle oocytes using X-sexed and non-sexed sperm. In experiment 1: The oocytes were incubated at various temperatures of 35.5, 36.5, 37.5, 38.5, 39.5 and 40.5°C under similar conditions with 5% CO2, in humidified air for 22 h. … …American Journal of Animal and Veterinary Sciences, Vol. 18, Issue 4 · 16 Nov 2023 · 5,319 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Toolkit Approach for Carbon Capture and Storage in Offshore Depleted Gas FieldRaj Deo Tewari, Tan Chee Phuat, Mohd Faizal SedaralitFossil fuels are considered a dependable, cost-effective, and efficient energy source and their utilization has resulted in tremendous growth for humanity. However, it has its downside also. Experts are of the view that present energy systems are unsustainable due to their detrimental impacts on the environment. Oil and gas producers are charged that their infrastructure, utilization of materials and technologies … …American Journal of Environmental Sciences, Vol. 19, Issue 1 · 17 May 2023 · 6,196 accessesView PDFCite
Research ArticleOpen accessIn the abstractExpression of Metallothionein-Like Protein 2B Gene Induced by Different Concentrations of Copper in White Spruce (Picea glauca)Megan McKergow, Kabwe NkongoloThe alterations to the expressions of metal transporter genes can induce metal ion uptake to maintain cell homeostasis when metal concentrations are low. Metallothioneins (MTs) are a class of low molecular mass (4-8 kDa), cysteine (Cys)-rich proteins that can bind metals via the thiol groups of their Cys residues. Studies on MT gene expressions in higher plants, such as conifers, … …American Journal of Biochemistry and Biotechnology, Vol. 18, Issue 4 · 25 Dec 2022 · 5,118 accessesView PDFCite
Research ArticleOpen accessIn the abstractLevels of Trace and Other Selected Metals in Mixed Teff Grain SamplesAbraha Gebregewergis WeldehawariaTeff (Eragrostis tef (Zuccagni)) is a hugely important crop to Ethiopia both in terms of production and consumption. In terms of production, teff is the dominant cereal by area coverage and second only to maize in production and consumption. The principal use of teff grain for human food in Ethiopia is in the form of Injera, a soft porous thin … …American Journal of Agricultural and Biological Sciences, Vol. 17, Issue 1 · 19 Feb 2022 · 7,124 accessesView PDFCite
Research ArticleOpen accessIn the abstractBaseline Concentrations of 11 Elements as a Function of Land uses in Surface Soils of the Katangese Copperbelt Area (D.R. Congo)Martin T. Mpinda, Tresor N. Kisimba, Theodore M. Mwamba et al.The Katangese Copperbelt Area (KCA) located south-eastern of D.R. Congo presents high concentration of Metal Trace Elements (MTE) due to a rich natural geochemical background and intense mining activities. However, the lack of data on specific baseline concentrations makes it difficult to assess and monitor the environmental quality of soils in the region. In this study, 11 MTE were measured … …American Journal of Environmental Sciences, Vol. 17, Issue 6 · 3 Jan 2022 · 7,126 accessesView PDFCite
Research ArticleOpen accessIn the abstractToxicity of Dinoflagellate (Gonyaulax verior) from Makassar Strait Waters on Medaka Fish (Oryzias javanicus) Embryo DevelopmentNita Rukminasari, Khusnul Yaqin, Jamaluddin Fitrah AlamThis study investigates the toxic effects of the dinoflagellate Gonyaulax verior on the embryonic development of medaka fish (Oryzias javanicus) sourced from four distinct aquatic environments in the Makassar Strait. Given the increasing presence of harmful algal blooms in marine ecosystems, understanding the impact of toxic dinoflagellates is crucial for assessing risks to fish populations. Embryos were exposed to varying … …OnLine Journal of Biological Sciences, Vol. 25, Issue 3 · 20 Nov 2025 · 2,123 accessesView PDFCite
Research ArticleOpen accessIn the abstractAssessment of Heavy Metals Enrichment and Sources in Different Functional Areas of Sixian CityHaimin Su, Dongsheng Xu, Gao Yang, Peng SunTo investigate soil heavy metal pollution in different functional areas of Sixian City, 48 soil samples were collected in residential, industrial, green, and commercial areas. The concentrations of V, Cr, Zn, Cu, Pb, and as were determined by the geoaccumulation index method and the enrichment factor method, and their pollution levels were evaluated. At the same time, the possible sources … …American Journal of Biochemistry and Biotechnology, Vol. 18, Issue 3 · 1 Aug 2022 · 5,546 accessesView PDFCite