3,199 results match your criteria: "CSIR - National Environmental& Engineering Research Institute[Affiliation]"

Air pollution has become a major health concern, particularly for vulnerable populations such as the elderly, children, and pregnant women. Studies have reported a strong association between prenatal exposure to air pollutants and adverse pregnancy outcomes, including lower birth weight, reduced fetal growth, and an increased frequency of preterm births. This review summarizes the harmful effects of air pollutants, such as particulate matter, on pregnancy and outlines the mechanistic details associated with these adverse outcomes.

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Removal of chlorimuron-ethyl from the environment: The significance of microbial degradation and its molecular mechanism.

Chemosphere

October 2024

National Key Laboratory of Green Pesticide, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China. Electronic address:

Chlorimuron-ethyl is a selective pre- and post-emergence herbicide, which is widely used to control broad-leaved weeds in soybean fields. However, herbicide residues have also increased as a result of the pervasive use of chlorimuron-ethyl, which has become a significant environmental concern. Consequently, the removal of chlorimuron-ethyl residues from the environment has garnered significant attention in recent decades.

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Article Synopsis
  • Squalene is a natural compound found in various organisms, known for its antioxidant properties and ability to enhance skin penetration, making it valuable in cosmetics, food, and pharmaceuticals.
  • The primary source of squalene is sharks, leading to a growing demand for sustainable and eco-friendly alternatives for its production.
  • Recent advancements in biotechnology focus on utilizing microorganisms to efficiently synthesize squalene, with a review summarizing the latest strategies in metabolic and bioprocess engineering.
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  • This study investigates the greenhouse gas emissions from prescribed fires using a carbon mass balance approach across 80 experimental plots.
  • It finds that grass and shrub savannas produce higher carbon emissions due to intense burning, while tree savannas and woodlands show higher emission factors despite lower total emissions, due to their high biomass carbon content.
  • The research emphasizes that vegetation types and climate zone interactions significantly affect carbon emissions and highlights the need for better measurement and reporting of GHG emissions from fires.
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Metal contamination in coastal and marine ecosystems has become a significant global concern due to its hazardous characteristics, environmental persistence, and ability to bioaccumulate in aquatic ecosystems. This poses a serious threat to the environment and the health of humans worldwide. To address these concerns, this study estimated the concentrations of metals in various trophic levels, including phytoplankton, zooplankton, bivalve, and fish.

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  • * This study examines different Arabidopsis thaliana populations from varying elevations in the Indian West Himalaya, finding that while overall methylation levels are similar, the distribution varies, with higher elevation populations showing less methylation.
  • * Differential methylation is linked to specific traits and environmental conditions, especially under abiotic stress, indicating that high elevation populations demonstrate greater epigenetic flexibility in response to changing environments.
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Effect of metakaolin and lime addition on geopolymerization of construction and demolition waste.

Environ Sci Pollut Res Int

October 2024

Central Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu, Nepal.

Article Synopsis
  • Construction and demolition waste is the largest waste by volume, posing a threat to sustainable development and the environment, with potential for recycling into building materials.
  • This study focuses on synthesizing geopolymers from brick powder using metakaolin and lime as additives, testing their compressive strengths, which showed notable increases when these additives were included.
  • The resulting geopolymer product GP-3 demonstrated superior bulk density and mechanical strength, highlighting its promising applications in the construction industry for environmental conservation.
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Thorium (Th) is commonly used in various applications, but its long-term exposure poses health risks, necessitating its detection in aqueous environments. Traditional methods such as inductively coupled plasma mass spectrometry are sensitive but require complex instrumentation. Optical sensors, particularly fluorometry-based methods, are simpler, cost-effective, and selective.

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Two-dimensional transition metal dichalcogenides (TMDs), such as MoS, hold great promise for next-generation electronics and optoelectronics due to their unique properties. However, the ultrathin nature of these materials renders them vulnerable to structural defects and environmental factors, which significantly impact their performance. Sulfur vacancies (V) are the most common intrinsic defects in MoS, and their impact on device performance in oxidising environments remains understudied.

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Article Synopsis
  • Chromium (Cr), especially in its hexavalent form (Cr(VI)), is highly toxic and common in tannery waste, requiring effective remediation methods due to its environmental hazards.
  • This study explored the use of the fungus Trichoderma yunnanense combined with sugarcane bagasse biochar (SBC) to reduce Cr(VI) levels, achieving a remarkable 99.65% reduction in just 48 hours at a lower concentration.
  • The findings indicate that this combination not only detoxifies Cr(VI) but also enhances fungal growth and enzyme activity, presenting a promising and sustainable bioremediation strategy for contaminated environments.
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Lead-free double perovskites (DPs) will emerge as viable and environmentally safe substitutes for Pb-halide perovskites, demonstrating stability and nontoxicity if their optoelectronic property is greatly improved. Doping has been experimentally validated as a powerful tool for enhancing optoelectronic properties and concurrently reducing the defect state density in DP materials. Fundamental understanding of the optical properties of DPs, particularly the self-trapped exciton (STEs) dynamics, plays a critical role in a range of optoelectronic applications.

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The micro-phytoplankton (>20 μm) adaptations and resilience were assessed using morphological traits (shape, surface-to-volume ratio; S:V, and greatest-axial-linear-dimension; GALD) from sea-surface and different SCML-depths (shallow:20-50 m, intermediate:50-100 m, and deep:100-140 m) across different bioregions of Indian Ocean. The dominant simple elongated phytoplankton-geometric-shapes (PGSs) and morphological traits showed distinct north-south distribution and varied with light and nutrient availability. Further, SCML and corresponding sea-surface PGS will be similar or dissimilar if the former is located within or deeper than mixed-layer depth.

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Microbial responses on upwelling signature across reversal wind pattern in tropical coastal environment off Mumbai, India.

Mar Pollut Bull

November 2024

Physical Oceanography Division, CSIR-National Institute of Oceanography (CSIR-NIO), Regional Centre, Four Bungalows, Andheri (West), Mumbai 400053, Maharashtra, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.

Upwelling promotes marine productivity through water column mixing. The process disturbs the ecosystem, causing oxygen depletion and thermal variability. This study analyses effect of upwelling processes on microbial signature in coastal waters off Mumbai.

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Insights into the community structure and environmental functions of water hyacinth rhizobiome in urban river ecosystem.

Environ Sci Pollut Res Int

October 2024

Biochemical Sciences Division, National Collection of Industrial Microorganisms (NCIM), CSIR-National Chemical Laboratory (CSIR-NCL), Pune, Maharashtra, 411008, India.

Water hyacinth (WH) is a widespread floating invasive aquatic plant with a prolific reproductive and dispersion rate. With the aid of its root-associated microbes, WH significantly modulates the ecosystem's functioning. Despite their irrevocable importance, the WH microbiome remains unexplored in detail.

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Conspecific density dependence (CDD) in plant populations is widespread, most likely caused by local-scale biotic interactions, and has potentially important implications for biodiversity, community composition, and ecosystem processes. However, progress in this important area of ecology has been hindered by differing viewpoints on CDD across subfields in ecology, lack of synthesis across CDD-related frameworks, and misunderstandings about how empirical measurements of local CDD fit within the context of broader ecological theories on community assembly and diversity maintenance. Here, we propose a conceptual synthesis of local-scale CDD and its causes, including species-specific antagonistic and mutualistic interactions.

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Monitoring macroplastics in aquatic and terrestrial ecosystems: Expert survey reveals visual and drone-based census as most effective techniques.

Sci Total Environ

December 2024

Department of Sciences, University Roma Tre, Viale Guglielmo Marconi 446, 00146 Rome, Italy; National Biodiversity Future Center (NBFC), Università di Palermo, Piazza Marina 61, 90133 Palermo, Italy. Electronic address:

Article Synopsis
  • Anthropogenic litter, specifically plastic, significantly impacts ecosystems, and scientists from various fields are working together to assess and reduce these pollutants.
  • The research aimed to determine the best methods for monitoring macroplastic litter in rivers and oceans by surveying 46 researchers who evaluated different techniques such as visual census, drone surveys, satellite imagery, and GPS/GNSS trackers.
  • Results indicated that traditional visual census and drone use were the most favored methods (scoring 3.5 and 2.0), while satellite imagery and GPS trackers were less effective due to validation challenges and range limitations, with scores below 1.2.
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A comprehensive study of various superconductors for superconducting nanowire single photon detectors applications.

iScience

October 2024

CSIR-National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi 110012, India.

Article Synopsis
  • Research on superconducting nanowire single photon detectors (SNSPDs) has advanced significantly in the last 20 years, thanks to improvements in key performance metrics like dark count rate and response time.
  • Despite challenges in optimizing multiple parameters simultaneously, the discovery of effective detection efficiency at low temperatures has spurred interest in high transition temperature cuprate-based superconductors.
  • The review explores various models of photon detection and examines the progress made using different superconducting materials, highlighting ongoing research on oxide-based superconductors and offering suggestions for performance enhancements in SNSPDs.
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River discharge into the sea and its implications on the environmental setting and fauna in the nearshore represent the intricate interactions among the atmosphere, hydrosphere, lithosphere, and biosphere. This study, based on in-situ and satellite data, presents how spatially varying river discharge laden with suspended sediments structure the hydrography and the nearshore benthic environment over a 590 km southwest (Kerala) coast of India. The 41 rivers that discharge along the Kerala coast are monsoon-driven; they are small but swift and cumulatively supply huge amounts of freshwater and suspended sediments into the Southeastern Arabian Sea (SEAS) during the Southwest Monsoon (SWM) when around 70 % (1925 mm) of the yearly rainfall occurs.

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Developing reliable biocompatible bioimaging agents is paramount for diagnosing critical diseases and disorders early through oral ingestion of fluorescent probes to image living organisms. Here, we prepared fluorescent, water-dispersed graphene oxide quantum dots pyrolysis of a root in the water medium using a cost-effective and environmentally benign method to enable , an organism analogous to the human genome, to be imaged alive. The prepared graphene oxide quantum dots demonstrated a 2.

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As COVID-19 profoundly affected nations worldwide, there was a significant reduction in gas and electricity consumption, contrasting with the surplus production of oil and gas by companies. This situation has ignited a growing interest in researching alternative green fuels. Electrochemical water-splitting has emerged as a promising avenue for advancing the green hydrogen economy.

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Glycine betaine: A multifaceted protectant against salt stress in Indian mustard through ionic homeostasis, ROS scavenging and osmotic regulation.

Physiol Plant

September 2024

Department of Stress, Development and Signaling in Plants, Estación Experimental del Zaidín, Spanish National Research Council (CSIC), Granada, Spain.

Salt stress is a prevalent environmental issue that disrupts the redox balance and metabolic processes in plants, leading to reduced crop growth and productivity. Currently, over 6.74 million hectares in India are salt-affected, and about 75% of this land lies in states that are the major cultivators of edible oilseed crops (rapeseed-mustard).

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Analysis of 16S rRNA amplicon data illuminates the major role of environment in determining the marine plastisphere microbial communities.

Environ Monit Assess

September 2024

CSIR-National Environmental Engineering Research Institute (NEERI), Hyderabad Zonal Centre, IICT Campus, Tarnaka, Hyderabad, Telangana, 500007, India.

Microplastics (MPs) are a potential threat to the marine environment and its associated ecosystem functions. Earlier investigations revealed that the microbiome plays a crucial role in deciding the fate of MPs in the environment. Further studies also highlighted the influences of environment and polymer types on the plastisphere microbiome.

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Geospatial maps can show how the ineffective operations of inactive mines affect water and aquifer quality. As such, the purpose of this study is to assess the impact of mining and irrigation on the aquifer ecosystem through the evaluation of LULC and slope maps through the application of Landsat 8 OLI/TIRS and DEM data. A total of 50 groundwater samples were prepared from villages in the close proximity to inactive mines during pre and post monsoon periods in 2021.

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Challenges and opportunities for large-scale applications of the electro-Fenton process.

Water Res

November 2024

Laboratoire Géomatériaux et Environnement EA 4508, Université Gustave Eiffel, Cedex 2, Marne-la-Vallée 77454, France. Electronic address:

As an electrochemical advanced oxidation process, the electro-Fenton (EF) process has gained significant importance in the treatment of wastewater and persistent organic pollutants in recent years. As recently reported in a bibliometric analysis, the number of scientific publications on EF have increased exponentially since 2002, reaching nearly 500 articles published in 2022 (Deng et al., 2022).

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Resource recovery from legacy waste dumpsites in India: A path towards sustainable waste management.

Chemosphere

October 2024

CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur, 440 020, Maharashtra, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, Uttar Pradesh, India. Electronic address:

Legacy waste dumpsites have been a significant environmental concern in India for many years. These dumpsites are characterized by the uncontrolled disposal of Municipal Solid Waste (MSW) and have led to various types of pollution and disease outbreaks. As India faces the challenges of rapid urbanization and increased waste generation and with over 3000 legacy waste dumpsites in the country, the need to address these legacy waste dumpsites has become paramount.

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