خيارات البحث
النتائج 181 - 190 من 273
An Analysis of Stormwater Management with the Internet of Things (IoT) النص الكامل
2025
Choudhary, Kusum | Kumar, Ravish
The study offers a comprehensive analysis of stormwater management durability in Chandigarh, India, primarily focusing on employing the Internet of Things (IoT). Eleven key stormwater management indices were examined, and their data sources and methodologies were detailed. The investigation independently evaluates the urban areas’ durability, emphasizing the singular indicators’ worth, and their consequences. Moreover, a consolidated comprehensive system durability indicator was computed utilizing the Analytical Hierarchy Method (AHM), offering a holistic viewpoint on stormwater administration. Chandigarh’s stormwater management uses a 100% weighted approach, this 100% weighted approach allows stakeholders to make informed decisions about stormwater management sustainability, ensuring the city’s water quality and effectiveness in mitigating flooding. Their findings showed a moderate overall sustainability index of 0.761, indicating challenges like waterlogging and limited drainage coverage. The outcomes provide perspectives into Chandigarh’s tenacity and durability in metropolitan water administration over a decade, highlighting the ever-changing character of urban growth and the requirement for flexible resolutions.
اظهر المزيد [+] اقل [-]A Compendium on the Eco-Sustainable Biosynthesis of Palladium Nanoparticles (PdNPs) and Their New Avenues Towards Environmental Applications النص الكامل
2025
Basak, Geetanjali
Palladium Nanoparticles (PdNPs) are considered significant catalytic agents, along with a wide range of applications, mainly hydrogen storage and sensing, biomedical imaging, and remediation strategies. Extensive studies are being carried out on the formation of PdNPs (PdNPs) worldwide, showing the predominance of the chemical approach among various technologies for the synthesis. The traditional chemical method employed in the formulation of PdNPs contains certain limitations that have been overcome by the use of the alternative biological method, as they are meek, low-cost, and benign to ecosystems. Therefore, the present review provides an overview of the modernized techniques involved in the biological approach for PdNPs formation by utilizing various natural origins, for example, plants as well as microbes, for their enhanced stability and applications in fields of the environment. Various mechanisms and parameters involved, along with approaches utilized for the characterization of bioPdNPs, are described, with an insight being delivered on the utility of biologically synthesized palladium nanoparticles. Recovery of PdNPs to achieve a circular economy is also being focused. In addition, the future prospectus on palladium nanoparticle research is also summarized.
اظهر المزيد [+] اقل [-]Heat Index Effect on the Fecundity and Growth of Decapterus macrosoma in the Selected Fishing Waters of Caraga Region, Philippines النص الكامل
2025
Berame, Julie S. | Bulay, Minie L. | Cruzado, Leah R. | Hayahay, Glenn | Pait, Romar
The fecundity of fish can be utilized to predict the fish catch in the future becoming to be the most vulnerable to the negative impact of global warming. This study aimed to determine the effect of heat index on the growth and fecundity of D. macrosoma “Budloy” from the selected locations of marine waters in the Caraga region. The study was conducted at Buenavista, Agusan del Norte, Placer Surigao del Norte, and Tandag Surigao del Sur, where Shortfin scad is common. This study used Stratification random sampling to collect the samples. To calculate the present heat index of the sampling areas, present temperature, and humidity during the capture of fish samples were determined. To determine the fecundity, six parameters of D. macrosoma were calculated: length, body weight, total weight of ovary, weight of ovary samples, number of eggs, and maturity stage of D. macrosoma ovaries. In terms of the correlational analysis between heat index and length of D. macrosoma, results showed that there is a moderate positive correlation, with r = .55, p = .000, for heat index and weight, results were found to have a strong positive correlation, with r = .71, p = .000. Based on the findings on the correlation between heat index and fecundity, with r =.007, p = .959, results indicate that although there is a positive correlation between heat index and growth, there is no significant relationship between heat index and fecundity. Based on the computed values of the heat index, growth, and fecundity of D. macrosoma samples in all sites, it is concluded that Buenavista waters have the highest numerical value of the reproductive potential of D. macrosoma as the basis for predicting the fish catch in the future.
اظهر المزيد [+] اقل [-]Isolation and Characterization of Phosphate-Solubilizing Bacteria from Compost and Open Dump Sites: Implications for Plant Growth النص الكامل
2025
Jayathilake, K. M. P. I. | Manage, P. M. | Idroos, F. S.
Phosphorus (P) is a vital macronutrient for plant growth. The bioavailability of P in soils is limited due to the insolubility of P. This study aimed to isolate and characterize Phosphate Solubilizing Bacteria (PSB) strains and determine their efficiency of phosphate solubilization and their effect on plant growth. pH, Electrical Conductivity (EC), Total Organic Carbon (TOC), organic nitrogen, and available phosphorus in soil were analyzed. Pikovskaya’s Agar (PKV) was used to isolate PSB strains and identified through biochemical tests and 16S rRNA gene sequencing. The solubilization efficiency of the isolates was assessed in PVK broth supplemented with 0.5% tricalcium phosphate (TCP), and their effect on plant growth was evaluated in pot experiments. Mung bean (Vigna radiata) was selected as the experimental plant. Five Bacillus strains were identified, and the genotypic test was confirmed as Bacillus pumilus strain PRE14, Bacillus altitudinis 41KF2b, Bacillus cereus ATCC 14579, Bacillus siamensis strain KCTC 13613, and Bacillus subtilis strain NCIB 3610. All isolated strains were positive for the catalase test, gram staining, motility test, starch hydrolysis test, and spore staining test. The citrate utilization test and the spot test for indole production were negative for isolated PSB strains. B. siamensis strain KCTC 13613 showed the highest phosphate solubilizing efficiency with the maximum phosphorus concentration of 9.17±0.07 mg/kg recorded after 6 days of incubation. Pot experiments revealed that potting media inoculated with B. siamensis strain KCTC 13613 exhibited the highest shoot length (mean increase of 16.77 ± 0.74 cm), root length (mean increase of 10.99 ± 0.41 cm), and wet weight (mean increase of 0.60 ± 0.08 g) compared to other isolated PSB strains. All isolated Bacillus spp. Strains demonstrated a significant difference (n=9, P < 0.05) in measured growth parameters compared to plants grown under the control potting media. Soil pH increased post-germination, with the lowest pH recorded at 7.40±0.09 for media inoculated with B. siamensis strain KCTC 13613, indicating organic acid production. These findings reveal the potential of Bacillus spp. as bio-inoculants to promote sustainable agriculture by enhancing phosphorus availability and plant growth.
اظهر المزيد [+] اقل [-]Using Artificial Intelligence Algorithms and Spatial Analysis of Agaricus bisporus in the Wilderness Near Lake Milh (Al-Razzaza), Iraq النص الكامل
2025
Ati, Estabraq M. | Abbas, Rana F. | Latif, Abdalkader Saeed | Ajmi, Reyam Naji | Jeewan, Oday Abdulhameed
Advanced applications of artificial intelligence and geographic information systems (GIS) techniques are used to monitor plant growth across their vegetation seasons using morphological parameters. This research presents novel measurements to determine the concentrations of elements such as carbon (C), nitrogen (N), hydrogen (H), lead (Pb), and cadmium (Cd) in the mushroom “Agaricus bisporus” and in the surrounding soil and air. These data are spatially analyzed to contribute to long-term predictions of pollution index and future ecosystem risks. Pollution and element accumulation in the mushroom, soil, and surrounding air were monitored using data accompanied by a geographic map. Pollution was assessed by transforming the system and adopting a methodology that integrates traditional methods with artificial intelligence, aiming to address the challenges with greater efficiency and accuracy. Input parameters were used to develop models using artificial intelligence and statistical methods to detect metal accumulation, and monitor carbon, hydrogen, nitrogen, and seasonal changes. The response of plants to heavy metals (lead and cadmium) in soil and air and their impact on their growth and development, were analyzed. The techniques showed a significant reduction in the error rate when using fungi as an indicator to predict dietary heavy metal concentrations, as the accuracy of artificial intelligence was remarkable in estimating the concentration of elements and their transfer from soil to plant. The integration of artificial intelligence, machine learning, and GIS technologies enhances environmental management, as it provides the ability to monitor, predict, and provide sustainable assessments. This study provides insights to improve plant growth, reduce pollution, and support long-term food security at a lower cost and with greater accuracy in assessing environmental impacts.
اظهر المزيد [+] اقل [-]Isolation and Characterization of Hexavalent Chromium Reducing Bacteria for Application in Microbial Fuel Cells النص الكامل
2025
Samuel G, Vijay | Anitha, R. | R., Govindarajan | Sangeetha, D. | Dey, Nibedita | Thangavelu, Premkumar | Raj, M. Anthony
Wastewater from several businesses that produce paints, steel, tannery products, dyes, and chrome-plated items contains hexavalent chromium [Cr(VI)]. The main contributing factor to pollution concentrations in water bodies is the wastewater that tannery businesses dump, which includes organic pollutants and heavy metals, particularly Cr(VI). The harmful consequences of Cr(VI) on humans include eczema, allergies, ulceration, respiratory tract problems, lung cancer, as well as genotoxic and mutagenic effects. Using bacteria to biotransform hexavalent chromium to trivalent chromium [(Cr(III)] is a practical strategy with proven viability in bioremediation. Following their isolation from the tannery industry’s raw effluent, bacterial strains were investigated biochemically and molecularly. Based on this study, it was concluded that the microorganisms resistant to Cr(VI) were Bacillus albus and Bacillus australimaris. In a two-chambered microbial fuel cell reactor, the isolated Cr(VI) resistant bacteria will be employed as electrogenic bacteria with SPEEK (Sulphonated polyether ether ketone) as PEM (proton exchange membrane), which can synergistically aid in the reduction of hexavalent chromium and green energy generation.
اظهر المزيد [+] اقل [-]Waste in Flux: Temporal and Seasonal Shifts in Mysuru and Tiruchirappalli النص الكامل
2025
Siddeshwar, Kavya P. | Joseph D., Rajeev | Devi M., Prashanthi | H. P., Shivaraju
Efficient management of municipal solid waste is essential to fostering sustainable urban growth, especially in rapidly urbanizing countries such as India. This study conducts a comparative analysis of waste collection patterns in Mysuru and Tiruchirappalli, two major cities in India. The study specifically examines temporal shifts and seasonal variations. A study of daily waste collection data over six years indicates apparent differences among the cities. Mysuru has a greater average daily waste collection of 481.82 tons compared to Tiruchirappalli’s 445.68 tons. A two-sample t-test assuming unequal variances indicates that this difference is statistically significant with a p-value of 0.0423. However, a more thorough analysis of seasonal patterns uncovers significant deviations. Mysuru exhibits elevated waste generation during the dry summer and wet winter seasons, whereas Tiruchirappalli encounters a surge in waste generation during the wet summer and wet winter periods. The seasonal variations highlight the impact of climate-related factors and consumption habits on waste generation. This study offers valuable insights into the intricacies of urban waste management in India, highlighting the importance of customized strategies that consider both temporal and seasonal fluctuations to improve the sustainability and resilience of waste management systems in rapidly developing urban areas.
اظهر المزيد [+] اقل [-]The Impact of Oil Pollution on the Growth of Local Plants as Bioindicators for Assessing Environmental Pollution Effects النص الكامل
2025
Abbas, Rana Fadhil | Aswad, Omer Abdul Kareem | Zaki, Huda Farooq | Ati, Estabraq Mohammed | Ajmi, Reyam Naji | Hasan, Maryam Jasim
The study investigates the environmental impact of oil pollution in the vicinity of the Dora Refinery, with a particular focus on its effects on local flora. The research utilizes selected plant species such as Salvia rosmarinus, Eucalyptus globulus, Ficus nitida, Conocarpus lancifolius, Nerium, Eucalyptus camaldulensis and Dodonaea viscosa as biological indicators to assess the extent of contamination and the plants’ adaptive responses to polluted conditions. Oil pollution is identified as a significant environmental issue in the Dora Refinery area, contributing to severe soil degradation and posing challenges to plant survival. The primary objective of this study is to evaluate the physiological and biochemical responses of these plant species to oil-contaminated soils, including growth performance, stress response mechanisms, and their potential role in environmental monitoring and land reclamation. The methodology involved selecting both polluted and non-polluted sites in proximity to the refinery. Soil samples were collected from these locations and used to cultivate the target plant species under controlled conditions. Growth rates were recorded, and several biomarkers associated with oil pollution exposure were analyzed. These included measurements of soil hydrocarbon content, chlorophyll concentration, antioxidant enzyme activities, and the accumulation of heavy metals and hydrocarbon pollutants in plant tissues. Results revealed that plants grown in polluted soils exhibited significantly reduced growth rates compared to those in uncontaminated environments. Notably, Salvia rosmarinus and Dodonaea viscosa demonstrated substantial accumulation of hydrocarbon pollutants, indicating their high sensitivity to contamination. In contrast, Eucalyptus globulus and Conocarpus lancifolius showed greater resilience, maintaining relatively stable growth and physiological parameters under stress. Polluted plants also exhibited clear signs of environmental stress, including decreased chlorophyll content and elevated antioxidant enzyme activity, reflecting their biochemical response to oxidative stress induced by pollutants. These findings suggest that the studied species vary in their tolerance to oil pollution, making them valuable bioindicators for environmental assessment. In conclusion, the physiological traits of these plant species significantly influence their susceptibility to oil pollutants. Their differential responses provide critical insights for environmental monitoring programs and offer promising avenues for the development of phytoremediation and land management strategies in oil-contaminated regions.
اظهر المزيد [+] اقل [-]Eco-efficient Bricks for Sustainable Urban Plastic Waste Management النص الكامل
2025
Zoungranan, Yacouba | Christian, M’Bra Ignace | Francis, Soro Sirata Ibrahima | Lynda, Ekou | Tchirioua, Ekou
In developing countries, plastic packaging waste and the proliferation of cement plants have become real problems in terms of hygiene and public health. Common plastic packaging is produced by the petrochemical industry. It is (Ivory Coast) non-biodegradable and releases numerous toxic substances when heated or incinerated. In this study, building blocks were produced by incorporating waste plastic packaging (low-density polyethylene) as reinforcement in fired clay bricks. The incorporation into the raw clay matrix was carried out in proportions of 0%, 1%, 2%, 3%, 4%, and 5% of plastic, corresponding respectively to brick types Bcp0, Bcp1, Bcp2, Bcp3, Bcp4 and Bcp5. The Bcp4 bricks showed optimal physical properties (water absorption rate, apparent porosity, density, and compressive strength). The introduction of 4% plastic waste into the clay increased the compressive strength, decreased the water absorption rate, and significantly reduced the apparent porosity. The influence of firing temperature (Tf ), firing time (tf ), and amount of mixing water (mwater) was investigated on Bcp0 and Bcp4 bricks. The better plastic incorporation for the operating parameters Tf = 200°C, mwater = 20 g, and tf =.6 h. The study shows that it is possible to have eco-efficient brick production with low energy consumption.
اظهر المزيد [+] اقل [-]Assessing Climate Sensitivity to Urban Land-Use Changes in Iraq النص الكامل
2025
Muter, Sara Ali | Tawfeek, Yasmin Q. | Al-Jiboori, Monim H. | Rukabie, Jamal S. Abd Al
Iraq has been suffering from a continuing rise in surface air temperature, causing a general deterioration in ecosystems. Land-use climate sensitivity focuses on how changes in land cover (e.g., deforestation, urbanization, or agricultural expansion affect local or regional climate conditions, particularly surface temperatures. Using yearly data on built-up areas and air temperature over the period (1971-2022), this sensitivity is assessed based on alterations in built-up areas for three Iraqi cities-Basrah, Baghdad, and Mosul, as well as for the entire country of Iraq. The time series of the areal yearly averages for air temperatures was analyzed. Standardized Euclidean distance and linear regression models were used to assess the effect of built-up changes and temperature trends, respectively. The results revealed that the trend in Iraq has positively increased, with a value of 0.07°C/year. The results also illustrate that alterations in built-up areas have contributed to the increase in yearly temperature in Basrah and Baghdad, but not in Mosul, which seems to be more affected by global warming and land cover changes. Urbanization plays a significant role in shaping the social, economic, and environmental landscapes of Baghdad and Basrah.
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