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Resource Assessment of Limestone Based on Engineering and Petrographic Analysis Hussain, Javid; Zhang, Jiaming; Lina, Xiao; Hussain, Khaleel; Shah, Syed Yasir Ali; Ali, Sajid; Hussain, Altaf
Civil Engineering Journal Vol 8, No 3 (2022): March
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2022-08-03-02

Abstract

The China-Pakistan Economic Corridor (CPEC) is a massive in-progress construction project in Pakistan that connects more than 70 countries via multiple trade channels such as highways, railways, roads, and fiber optics. This project also involves the development of local infrastructure and industrial zones in Pakistan, which demands the discovery of new resources of aggregate to facilitate the construction. Therefore, physical characterization research was carried out on the Kirman hill region (Jurassic limestone), District Kurram, Pakistan, to investigate their suitability for utilization as construction materials using site investigation and laboratory studies. The results outline that all typical engineering parameters are within acceptable limits set by international standards like BS, ASTM, and AASHTO. Bituminous tests revealed that Jurassic limestone is appropriate as an aggregate for asphalt wearing coarse. Likewise, the petrographic study performed shows proper matching with engineering tests. The petrographic analysis of Jurassic limestone showed a minute amount of deleterious content; as a result, it is resistant to Alkali silica reaction (ASR) and Alkali carbonate reaction (ACR) expansions. Based on engineering and petrographic analysis, the Jurassic limestone, Kirman hill region, District Kurram, Pakistan is recommended as a potential aggregate for (i.e., base course, subbase course, cement concrete, and asphalt) and other mega and minor civil construction projects. Doi: 10.28991/CEJ-2022-08-03-02 Full Text: PDF
Anagallis Arvensis As A Natural Allelopathic Agent: Effects On Growth Of Zea Mays, Triticum Aestivum, And Pennisetum Glaucum Ullah, Shakir; Shakir, Lubna; Sohail, Mohammad; Falaknaz, Falaknaz; Ali, Sajid; Subhan, Ghani; khan, Rahid; Dilawar, Naveen
International Journal on Food, Agriculture and Natural Resources Vol 6, No 4 (2025): IJ-FANRES
Publisher : Food, Agriculture and Natural Resources - NETWORKS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46676/ij-fanres.v6i4.558

Abstract

This study aimed to investigate the allelopathic effects of Anagallis arvensis on Zea mays under controlled laboratory conditions during the period 2022–2024. The aqueous extracts of A. arvensis were tested for their influence on seed germination, seedling growth, fresh weight, and dry weight of Zea mays, Triticum aestivum, and Pennisetum glaucum. Results revealed that a 20 g leaf extract applied for 72 hours significantly inhibited germination percentage, radicle length, fresh weight, and dry weight compared to the control. The degree of inhibition increased with both extract concentration and soaking duration. Treatments with 10 g, 20 g, and 30 g of extract initially enhanced germination over time, with the highest rates observed at 48 hours. However, the 20 g extract caused a notable reduction in germination at this same time point. Overall, a 72-hour treatment duration led to reduced mean germination rates across all concentrations. At lower extract concentrations, extended soaking time had minimal impact on germination. Notably, at 24 hours, germination increased with rising extract concentration; similarly, at 48 hours, germination improved with concentration except at 20 g, where a decline was observed. The only exception to the general trend was an increase in plumule length under the 10 g extract treatment. These findings suggest that the presence of A. arvensis leaf and stem litter in agricultural fields may negatively impact the germination and growth of associated crops, ultimately leading to reduced yield.