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44 articles for “Tropical Region”
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Research ArticleOpen accessIn the abstractStructural and Substrate Interaction Properties of Alkaline Phosphatase from Paenibacillus sp. PSB04: In-Silico AnalysisHerman Umbau Lindang, Cahyo BudimanA Phosphate-Solubilising Bacterium (PSB) of Paenibacillus sp. PSB04 was previously isolated from the Sabah tropical rainforest in Malaysia. Interestingly, the genome sequence of the PSB04 strain harbored an Alkaline Phosphatase (AP) (EC 3.1.3.1) gene and was hypothesized to have unique structural characteristics. Therefore, this study aims to determine the AP three-Dimensional (3D) model and catalytic mechanism from Paenibacillus sp. PSB04 … …OnLine Journal of Biological Sciences, Vol. 22, Issue 3 · 16 Jul 2022 · 5,910 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffects of Bradyrhizobium Japonicum on Nitrogen Concentration in Soybean Leaves and Seeds Cultivated on Acidic SoilsBen Tshibuyi Kasu-Bandi, Fabien Kitengie Kitengie, Jonas Lwamuguma Bagaluza et al.The legume-rhizobium symbiosis plays an important role in Nitrogen (N) uptake by plants, more particularly in the humid tropical region where soils are deeply weathered and have poor electrochemical properties. However, the influence of Bradyrhizobium on N allocation in soybean organs is not clearly understood. Here, we assessed the effect of Bradyrhizobium japonicum on the N concentration of soybean leaves … …American Journal of Agricultural and Biological Sciences, Vol. 17, Issue 1 · 24 Jan 2022 · 7,663 accessesView PDFCite
Review ArticleOpen accessIn the abstractA Systematic Review of Artificial Intelligence and Deep Learning Approaches for Cocoa Pod Disease DetectionHenry Techie-Menson, Michael Asante, Yaw Marfo Missah et al.Cocoa pod diseases destroy an estimated 700,000 metric tons of cocoa annually, threatening 40–50 million smallholder farmers across tropical regions. Accurate field diagnosis remains constrained by symptom similarity, labour-intensive scouting, and limited specialist access in remote communities. This paper presents a PRISMA-guided systematic review of 25 peer-reviewed studies on automated cocoa pod disease detection and classification (2016–2026), addressing architectural approaches, … …Journal of Computer Science, Vol. 22, Issue 8 · 8 Sep 2026 · 733 accessesView PDFCite
Research ArticleOpen accessIn the abstractInfluence of Cement Chemistry on the Performance of Cement Stabilized Tropical Lateritic SoilOdumade Adegboyega Oduniyi, Ezeah Chukwunonye, Charles Nnamdi Ezugwu, Ekeoma EmmanuelChemical composition affects overall performance of cement on other materials such as when used in concrete or for stabilization of lateritic soil. This research studied the influence of chemical composition of three Portland cement types represented as samples A, B and C on engineering performance when mixed with laterite under tropical environmental conditions.The Lateritic soil sample classified according to AASHTO … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 2 · 21 May 2018 · 8,804 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvaluation of Polymorphisms at Heat Shock Protein 90 Gene by High Resolution Melting Assays for Potential Heat Tolerance among Nigerian Zebu Cattle BreedsGbolabo Onasanya, George Msalya, Aranganoor Thiruvenkadan et al.Heat Shock Protein (HSP) 90 gene is a member of HSPs sub-family that act as molecular chaperons whenever animals come under thermal stress. The genes fulfill essential roles of providing cellular protection, immune response, protein synthesis, protein folding and unfolding, protection from cellular stress, inhibitory apoptosis and adaptation. This study was designed to analyze polymorphisms of HSP 90 and to … …American Journal of Animal and Veterinary Sciences, Vol. 15, Issue 1 · 7 Mar 2020 · 7,258 accessesView PDFCite
Research ArticleOpen accessIn the abstractCurrent Advances in Zika Virus Transmission: Urgency for Effective Therapeutics and PreventionYash Raj, Swatantra Kumar, Amrita Haikerwal et al.Global emergence of Zika Virus (ZIKV) with prevalent outbreaks has been reported in numerous countries of South America, Central America and the Caribbean region. According to recent World Health Organization (WHO)-ZIKV situation report, 84 countries/territories/subnational areas represented with established mosquito-borne transmission of ZIKV. As of 10 August 2017, cumulative Zika cases and congenital syndrome associated with Zika virus reported by … …American Journal of Infectious Diseases, Vol. 13, Issue 2 · 2 Oct 2017 · 7,798 accessesView PDFCite
Review ArticleOpen accessIn the abstractSargassum Invasion of Coastal Environments: A Growing ConcernClifford Louime, Jodany Fortune, Gary GervaisFloating tropical brown macroalgae, commonly called Sargassum, besieging the Caribbean coastlines have long been a regular occurrence in the region, especially during the fall and winter months. These washed-up seaweeds are considered by scientists as an important part of the coastal ecosystem, as they serve as habitat and nurseries for numerous marine species. However, in recent years, the region has … …American Journal of Environmental Sciences, Vol. 13, Issue 1 · 6 Feb 2017 · 12,734 accessesView PDFCite
Research ArticleOpen accessIn the abstractMercury Contamination within Protected Areas in the Brazilian Northern Amazon-Amapá StateRossana Venturieri, Marcelo Oliveira-da-Costa, Cecile Gama, Christoph Bernhard JasterMercury contamination is a long-standing environmental and social problem, notably in the Amazon. The widespread use of mercury in artisanal and small-scale gold mining has driven contamination of the environment and the people, threatening biodiversity, human health and livelihoods of traditional populations. Along the border area between Brazil and French Guiana, illegal gold mining is considered a critical threat to … …American Journal of Environmental Sciences, Vol. 13, Issue 1 · 17 Jan 2017 · 9,246 accessesView PDFCite
Review ArticleOpen accessIn the abstractImpact of Pest and Diseases on Mangrove Forest Rehabilitation in Indonesia: A ReviewAndi Aznan Aznawi, Mohammad Basyuni et al.Mangroves are the constituent plants of tropical and subtropical intertidal regions of forest communities, comprising a biotic and abiotic environment for ecosystem services. Biotic factors greatly affect the health of mangrove forests, the decline in health in mangrove ecosystems is caused by pests and diseases on the leaves. The presence of pests and diseases that attack mangrove plants resulted in … …OnLine Journal of Biological Sciences, Vol. 24, Issue 4 · 9 Jul 2024 · 5,926 accessesView PDFCite
Research ArticleOpen accessIn the abstractProposed Soil Quality Index for Rehabilitated Tropical Forest Sites in MalaysiaDaljit Singh Karam, Arifin Abdu, Keeren Sundara Rajoo et al.A proposed soil quality index named Tropical Soil Quality Index 2 (TSQI2) was developed in this study using statistical analysed data of selected properties (physical, chemical and biological) of composite soil samples collected from natural, secondary and rehabilitated forests of Chikus and Tapah Hill Forest Reserves, Perak, Malaysia. Results of soil evaluation using TSQI2 showed higher values for planted forest … …American Journal of Applied Sciences, Vol. 14, Issue 1 · 30 Dec 2016 · 8,154 accessesView PDFCite