Research Article
Ecological Impact of Logging for the Production of Community Beams for Local Use in the Community of Segundo Congresso in Chipanje Chetu Program Area
Fanuel Garai Albino Muiambo*
Issue:
Volume 6, Issue 1, March 2026
Pages:
1-12
Received:
30 October 2025
Accepted:
17 November 2025
Published:
20 January 2026
Abstract: This technical note assesses the ecological impacts of logging for beams in the community of Segundo Congresso, Niassa, Mozambique, under the Chipanje Chetu program. Dendrometric methods were used to collect diameter at breast height, commercial and total height, identification of local species, volume of standing tree, volume of logs and sawn wood, in addition to volumetric yield. Data were organized in Excel 2024 and analyzed using ANOVA in Statistix 8, with means compared by Tukey's test at a 5% significance level. From the results, it was found that the chainsaw operator lacks technical knowledge, aggravating the unsustainable exploitation, since the forest supply is critical, trees of large diameter and height are scarce and dispersed, especially Vitex doniana (Mpindimbe) and Pericospi angolensis (Muanga). The sample included 3 trees with DBH > 50 cm and total height between 16 and 21 m, generating standing volumes of 2.92–5.65 m³ and commercial volumes of 1.07–1.88 m³, with an average yield of 17.25 m³ per tree. The low yield is due to the diameter, height, morphological quality of the trees and the experience of the operator. The production of beams was 35 per log, corresponding to 0.68 m³ of sawn wood per tree, equivalent to 46.78% of commercial yield. Ecologically, the activity has positive impacts, such as the preservation of the ecosystem, as it is a semi-mechanized exploration with only a chainsaw and displacements on foot, and it also has negative impacts that are manifested in the pressure on the same large species and low availability, and the lack of technical knowledge of the operator generates operational inefficiency in the conversion of logs into beams.
Abstract: This technical note assesses the ecological impacts of logging for beams in the community of Segundo Congresso, Niassa, Mozambique, under the Chipanje Chetu program. Dendrometric methods were used to collect diameter at breast height, commercial and total height, identification of local species, volume of standing tree, volume of logs and sawn wood...
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Research Article
Neurological Manifestations of Post-Viral Syndromes and Long COVID: Clinical Spectrum and Pathophysiological Mechanisms (Qualitative Systematic Review)
Vicente Manuel Martinez Cardenas*
Issue:
Volume 6, Issue 1, March 2026
Pages:
13-23
Received:
28 December 2025
Accepted:
9 January 2026
Published:
27 January 2026
DOI:
10.11648/j.frontiers.20260601.12
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Abstract: Introduction: Post-viral syndromes are characterized by the persistence of symptoms following acute viral infection. In the context of the SARS-CoV-2 pandemic, Long COVID—also known as post-acute sequelae of SARS-CoV-2 infection (PASC)—has emerged as a clinically relevant condition with prominent neurological manifestations. Objective: To describe the neurological manifestations of post-viral syndrome and Long COVID, and to analyze the pathophysiological mechanisms proposed to underlie these neurological symptoms in adult and pediatric populations. Methods: A qualitative systematic review was conducted following PRISMA guidelines. Searches were performed in PubMed, Scopus, Web of Science, and SciELO for articles published between January 2020 and May 2025. Observational studies, clinical trials, systematic reviews, and consensus guidelines addressing neurological manifestations of post-viral syndrome or Long COVID were included. A total of 23 studies met inclusion criteria and were synthesized qualitatively. Results: The most consistently reported neurological manifestations included persistent fatigue and post-exertional symptom exacerbation, cognitive dysfunction (“brain fog”), headache, sleep disturbances, dysautonomia, sensory abnormalities, and neuropathic symptoms. Mechanistic domains most frequently implicated across studies included immune dysregulation and neuroinflammation, endothelial and microvascular dysfunction, mitochondrial and metabolic impairment, autonomic nervous system disruption, and possible viral persistence or immune-mediated injury. Pediatric studies reported a similar symptom spectrum, with particular impact on cognitive performance, headache, fatigue, and mood or behavioral disturbances. Conclusions: Neurological manifestations represent a core component of Long COVID and related post-viral syndromes. Current evidence supports a multifactorial pathophysiology involving immune, vascular, metabolic, and autonomic mechanisms. Improved mechanistic understanding and standardized phenotyping are essential to guide future diagnostic and therapeutic strategies, particularly in pediatric populations.
Abstract: Introduction: Post-viral syndromes are characterized by the persistence of symptoms following acute viral infection. In the context of the SARS-CoV-2 pandemic, Long COVID—also known as post-acute sequelae of SARS-CoV-2 infection (PASC)—has emerged as a clinically relevant condition with prominent neurological manifestations. Objective: To describe ...
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