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In this study, the pyrolysis products formation and kinetics of base cracked oil were studied by a TG-FTIR device, which can provide a reference basis for heavy oil and gas reaction and industrial application. The results exhibited that the saturated fraction was mainly composed of chain alkanes and cycloalkanes. The aromatic fraction mainly contains polycyclic aromatic hydrocarbons and alkyl substituted aromatic hydrocarbons. The resin fraction is mainly multi-cyclic aromatic hydrocarbons. As the fraction becomes heavier, the initial and termination cracking temperature of saturate, aromatic,..read more
Ruiyuan Tang, Yuru Gao, Yani Li, Lixia He, Peixuan Sun, Zhibing Shen and Juntao Zhang
- 24 Dec 2024
- Volume Detail: VOLUME 46, NO6, DEC-2024
- Pages: 508
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Silver nanoclusters were synthesized and passivated by glutathione (GSH) ligand, with high aqueous stabipowerful red fluorescence and UV-Vis light yellow colour. A novel colorimetric and fluorimetric assays have been presented for the detection of sodium valproate using glutathione capped silver nanoclusters, (GSH-Ag NCs) as a colorimetric and fluorimetric sensor. The size of the AgNCs-GSH was found to be ~ 10 nm on DLS. The fluorimetric detection of GSH-AgNCs with sodium valproate exhibited excitation bands 600 nm and 360nm respectively and sodium valproate emission indicated showed 3 emissio..read more
Asma Laghari and Muhammad Yar Khuhawar
- 24 Dec 2024
- Volume Detail: VOLUME 46, NO6, DEC-2024
- Pages: 516
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Termites have played havoc on common woodworks in houses especially at sub-continent regions. In this work, freshly prepared chitosan from Tiger prawn (Paneous Monodon) shells was studied for anti-termite growth on vulnerable Kail wood pieces. Prawn shells were systematically processed through deprotenization, demineralization, decolourization and deacetylation to get granulated chitosan powder. Freshly extracted chitin and chitosan were characterized by FTIR, SEM and XRD studies. Effect of different compositions of chitosan in acetic acid and contact time of termite with wood towards reductio..read more
Rimsha Shoukat, Zulfiqar Ali, Riaz Hussain, Mirza Arfan Yawer, Sumaira Naz and Affifa Yawer
- 24 Dec 2024
- Volume Detail: VOLUME 46, NO6, DEC-2024
- Pages: 529
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Methylene blue (MB), a prevalent pollutant in textile industry wastewater, poses significant environmental and health risks due to its toxicity, mutagenicity, and persistence. Effective remediation strategies are essential for mitigating its impact. This study presents a novel approach using Zinc Oxide (ZnO) nanoparticles synthesized via a green synthesis method employing Laurus nobilis leaf extract. This environmentally friendly method avoids harmful chemicals and enhances the safety of nanoparticle disposal. The ZnO nanoparticles, characterized by X-ray diffraction (XRD), scanning electron m..read more
Doga Kavaz
- 24 Dec 2024
- Volume Detail: VOLUME 46, NO6, DEC-2024
- Pages: 535
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A series of new heterocyclic aromatic derivatives compounds were synthesized by reacted of Bis-methylene-di-(2-aminobenzoyl chloride) with different chloride moieties such as piperidine-1-sulfonylchloride, Pryidine-3-sulfonylchloride, 4,4'-(diazene-1,2-diyl)dibenzoyl-chloride and chloramphenicol respectively, to afforded a derivatives compound containing primary amine group [A-A4]. These derivative compounds [A-A4] were reacted with polyethanol using cold-warm esterification to synthesize of new graft polymers [B1-B4]. The structures of products were conforming by FT-IR and 1H-NMR spectroscop..read more
Zainab A. Jabarah, Israa Sh. A.R. Al- Kadi and Amina A. Fayad
- 24 Dec 2024
- Volume Detail: VOLUME 46, NO6, DEC-2024
- Pages: 550
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Fluorescein and its various derivatives show remarkable biological and bio-analytical applications because of its solubility, high degree of inertness and high fluorescent activity. To broaden the spectrum of its applications, we synthesized novel fluorescein-based hydrazides (FHJ-0.2 - FHJ-0.6) using different substituted aryl hydrazine. The newly designed and synthesized products have been monitored by thin layer chromatography and characterized by 1HNMR, IR and MS data. To find the application of these hydrazides, the biological screening is considered and screened by antimicrobial and hemo..read more
Shazia Kousar, Abdul Jabbar, Muhammad Ahmad Mudassir, Syed Adnan Ali Shah, Fozia Anjum, Madiha Irfan, Ayesha Monawer and Syed Waqas Bukhari
- 24 Dec 2024
- Volume Detail: VOLUME 46, NO6, DEC-2024
- Pages: 560
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Pyrazolone is considered to be an active nucleus present in a large number of drugs. Based on their biological profile, we have tested previously synthesized series of pyrazolone derivatives (Ia-Id), (IIa-IId), (IIIa-IIId), and screened those for in-vitro antioxidant potential using DPPH assay method. These compounds showed moderate to good antioxidant activity. Furthermore, potential analogs were evaluated for in-vitro cytotoxicity via MTT reduction assay in MCF-7 cell line. The compounds exhibited non-toxic effect and did not show 50% inhibition on particular concentration. Based on these ob..read more
Madiha Kanwal, Sadia Sarwar, Humaira Nadeem, Benish Saeed and G. A. Miana
- 24 Dec 2024
- Volume Detail: VOLUME 46, NO6, DEC-2024
- Pages: 568
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Due to the lack of and high cost of antibacterial medications against resistant bacteria, infectious diseases are the leading cause of death worldwide, especially in low- and middle-income nations. Infectious diseases include viral, parasitic, bacterial, and fungal ones, with bacterial being the most prevalent. The need for the creation of new and effective antibacterial agents is critical because the overuse of antibiotics and the resulting rise in antibiotic resistance persists today. In this context, a number of metals and metal oxides, metal oxide nanoparticles, and metal-organic framework..read more
Abdul Rauf, Shah Muhammad Haroon, Mehdi Hassan, Hamid Raza, Tehreem Anwar, Mohsin Javed, Ayesha Mohyuddin, Hafiz Muhammad Arshad and Muhammad Imran
- 24 Dec 2024
- Volume Detail: VOLUME 46, NO6, DEC-2024
- Pages: 574
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The present study introduced an innovative and quick RP-HPLC approach for simultaneous determination of Metformin HCl (MET) and Ertugliflozin L-pyroglutamamic acid (ERT). This new method is simple, accurate, precise and highly sensitive. The separation of both drugs was optimized at 40°C using HPLC column (C8, 4.6 x 150mm 5 microns) and mobile phase comprising of triethylamine in sodium octane sulfonate (pH 4) : MeOH: ACN in a ratio of 45:45:10 respectively, with a flow rate of 1.0 ml /min. The specificity of method showed that there was no interference from placebo or diluent during the drug'..read more
Muhammad Ashraf, Shaista Zafar, Rustem Zairov, Sana Shaikh, Syed Moazzam Haider, Nida Ali, Kamran Shaikh and Mohsin Ali
- 24 Dec 2024
- Volume Detail: VOLUME 46, NO6, DEC-2024
- Pages: 590
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Microbial pathogenic microorganisms in wastewater have globally presented a substantial public health concern. The mainly applied conventional disinfection techniques are usually not able to achieve complete disinfection of bacteria in municipal wastewater. As a result, strategies for wastewater treatment and the development of next-generation water supply systems are needed. Although chlorination is the most used disinfection system, it presents various demerits such as the high doses required and the production of toxic by-products (trihalomethanes) that are harmful to human health. Advanced..read more
Robin Simiyu, Seth Apollo and Genson Muriithi
- 24 Dec 2024
- Volume Detail: VOLUME 46, NO6, DEC-2024
- Pages: 600
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