Research Article
Lithology, Sulfide Mineralization, and Hydrothermal Alteration in an Emerging Birimian Gold District: Yas Permit, Boundiali Area, Bagoue Basin, West African Craton
Issue:
Volume 13, Issue 6, December 2025
Pages:
170-179
Received:
10 October 2025
Accepted:
21 October 2025
Published:
28 November 2025
Abstract: The Birimian greenstone belts of West Africa are globally recognized for hosting some of the most prolific orogenic gold deposits. In Côte d’Ivoire, the Bagoue Basin forms a major segment of the Boundiali Belt and represents one of the most promising yet underexplored gold provinces. This study focuses on the lithological, petrographic, and mineralogical characterization of the volcano-sedimentary formations within the YAS exploration permit, located in the Boundiali area. The research is based on a detailed analysis of diamond drill cores obtained from three mineralized targets (Targets 2, 3, and 10). The intercepted sequences are dominated by sedimentary units including sandstones, shales, and polymictic conglomerates, locally intruded by fine-grained mafic dykes. These rocks display intense and multiphase hydrothermal alteration, mainly silicification, chloritization, carbonation, and potassic alteration, which are closely associated with polymetallic sulfide mineralization composed of pyrite, pyrrhotite, arsenopyrite, and chalcopyrite. The occurrence of visible gold within Target 3 confirms the presence of a structurally controlled orogenic gold system, spatially related to NE-SW-trending shear zones. Collectively, these results demonstrate the strong influence of structural and hydrothermal processes in the metallogeny of the Bagoue Basin and emphasize the significant exploration potential of the YAS permit for future large-scale gold discoveries in northern Côte d’Ivoire.
Abstract: The Birimian greenstone belts of West Africa are globally recognized for hosting some of the most prolific orogenic gold deposits. In Côte d’Ivoire, the Bagoue Basin forms a major segment of the Boundiali Belt and represents one of the most promising yet underexplored gold provinces. This study focuses on the lithological, petrographic, and mineral...
Show More
Research Article
Productivity Evaluation of Hormone-primed Maize Seedlings Exposed to Microgravity Environment Simulated with 2d Clinostat
Issue:
Volume 13, Issue 6, December 2025
Pages:
180-197
Received:
18 October 2025
Accepted:
31 October 2025
Published:
9 December 2025
DOI:
10.11648/j.ajls.20251306.12
Downloads:
Views:
Abstract: The biggest challenges in long space exploration has been sustainable supply of basic life support. Plants are reliable sources of sustenance and survival because of their ability to produce Oxygen, Water, and Food. This is much more important as it provides a more sustainable energy source during space travel. Unfortunately, microgravity which is a common phenomenon in space could be hindrance to plant growth and development. This study investigated response of plant growth promoters to enhance survival, yield and development of a Zea mays exposed to Microgravity simulated environment using 2D Clinostat. Plant growth stimulators that were used are Indole-3-Acetic Acid (IAA), Sodium Nitroprusside (SNP) and Thiourea (TU) at concentrations of 100 ppm and 500 ppm respectively. The Zea mays seeds were subjected to clinorotation at 0.5 rpm, and 2.5 rpm, and were observed for 120 hr. After 120hrs, the microgravity-exposed seedlings were acclimatized in experimental plants in a well-ventilated screen house for 5 days and thereafter transplanted on the field, where plant growth and yield responses were observed for 12 weeks. The study showed that addition of growth stimulators enhanced significant positive association between plant total dry weight and oxygen production efficiency. This study addresses Millennium Development Goal 1: Eradicate extreme poverty and hunger. This it does by providing information on the possible adoption of a combination of microgravity and growth stimulation as a measure for improvement of maize, as yield increase was more than 50% through the adoption of this technology. Conclusively, growth chemo-stimulation with IAA and SNP enhanced plant growth, development and high yield of maize exposed to simulated microgravity using 2D-Clinostat.
Abstract: The biggest challenges in long space exploration has been sustainable supply of basic life support. Plants are reliable sources of sustenance and survival because of their ability to produce Oxygen, Water, and Food. This is much more important as it provides a more sustainable energy source during space travel. Unfortunately, microgravity which is ...
Show More
Research Article
Efficacy of Antifungal Medicines Against Clinical Isolates of Candida Species Responsible for Vaginal Candidiasis from Regional Referral Hospitals in Tanzania
Issue:
Volume 13, Issue 6, December 2025
Pages:
180-189
Received:
20 October 2025
Accepted:
29 October 2025
Published:
9 December 2025
DOI:
10.11648/j.ajls.20251306.13
Downloads:
Views:
Abstract: Vaginal candidiasis, caused by Candida species affects a significant proportion of women worldwide. Although different antifungal medicines are being used to treat the infection, the emergence of resistance against these medicines have been reported. This study assessed the efficacy of antifungal medicines which are recommended for treatment in the Tanzania Standard Treatment Guidelines against clinical isolates of Candida spp. Presumptive Isolates of Candida spp. collected from Regional Referral Hospitals (RRH) were transported to the Tanzania Medicine and Medical Devices Authority (TMDA) Microbiology laboratory for identification and confirmation by PCR. The confirmed isolates were used for susceptibility testing to establish the efficacy of antifungal medicines. Results indicate that Candida albicans (54%) was the most prevalent Candida spp. among isolates collected. Among the antifungal medicines tested, Miconazole showed the highest efficacy against 229 isolates of Candida spp. with 89.2% of the isolates being susceptible. This was followed by Clotrimazole, with 79.9% and Nystatin, 79.5% of isolates were susceptible, while Voriconazole showed moderate efficacy with 68.9%. Fluconazole demonstrated the lowest efficacy among the tested antifungals with 63.3%. Both Candida albicans and non-albicans Candida spp. displayed similar susceptibility patterns. Out of the 229 Candida spp. isolates tested, 4.4% were found to exhibit multidrug resistance. Findings from this study suggest that despite the observed resistance, the majority of antifungal medicines listed in the Standard Treatment Guidelines in Tanzania remain effective and are still considered reliable for treating vaginal candidiasis.
Abstract: Vaginal candidiasis, caused by Candida species affects a significant proportion of women worldwide. Although different antifungal medicines are being used to treat the infection, the emergence of resistance against these medicines have been reported. This study assessed the efficacy of antifungal medicines which are recommended for treatment in the...
Show More
,
Yaya Ouattara,
Chiaye Larissa Koffi epse Coulibaly
