HS Publishing
Not a member yet
614 research outputs found
Sort by
Valorization of Douala Car Tyres Steel Fibers Waste in Concrete at Cameroonian Coast: Effect of Lengths and Fibers Content
No full textIn developing countries such as Cameroon, the sale and use of second-hand tyres from European and Asian countries is booming; most vehicle owners cannot afford new tyres. These tyres obviously have a very short life (less than 3 months) and end up in the wild or in fire, with for both cases, a serious environmental impact: this often means that these countries are the garbage of the West. In order to make a useful valorization of these wastes, this work makes a contribution by incorporating the steel fibers from worn-out tyres into concrete. The study showed the impact of fiber lengths and their proportion, in quantity, on the mechanical behavior of concrete. To do this, the concrete was reinforced with steel fibers from used tyres collected from tyre operators in Douala 5th specifically in Ndogbong - Douala. The sand used in this work comes from the river Sanaga - Edéa. We made test pieces according to four fiber grades (0%, 0.4%, 0.6% and 0.8%) and three different lengths of steel fibers (2 cm, 3.5 cm and 5 cm), in accordance with previous works. Subsequently, three-points bending tests, compression tests, water absorption rate and density tests were carried out on concrete samples at 7, 14 and 28 days of cure. Test pieces of dimensions 40 x 40 x 160 (in accordance with EN 196) were used to determine the rate of water absorption, density and tensile strength by three points bending in a first step; then those of dimensions 40 x 40 x 80 (following the NF P 18-406 standard) allowed to determine the compressive strengths. Analysis have shown that the density of steel fiber reinforced concrete is higher than that of control concrete in all cases. The introduction of steel fibers into concrete reduces the rate of absorption of concrete. In addition, compared with the control concrete, the bending limits and compression stresses of the different proportions increased for all lengths and fiber contents. However, it was observed that concrete specimens with a dosage of 0.6% steel fibers and a length of 2 cm (BFA2-6) had an optimum physical and mechanical properties and was more elastic
Sustainable Warehouse Management
No full textThis review summarizes the findings of 20 studies which overall topics are about sustainability in warehouse management. The studies involve a variety of strategies and practices that mainly focus on optimizing social and environmental outcomes within warehouse operations. They explain the importance and benefits that are relevant to the three domains of sustainability in warehouses: environmental, economic and social domains. A comprehensive investigation is conducted to find out relevant strategies, models and practices to ensure that the subject is covered thoroughly. The findings suggest a thorough framework of green strategies integrating energy-efficiency measures and solutions that focus on diminishing the environmental strain on logistics sites. Other findings also show that data driven decision-making frameworks improve sustainable inventory management practices. Significantly, research find enhancement in operational efficiency can be done by the implementation of green supply chain management strategies in logistics warehouses. These implementations can also support the sustainable development of practices while lowering costs. Most of these practices deal with energy conservation, the effect of warehouse construction on the environment. In most of the studies, the researchers suggest the possibility of future research that can focus on the impact of big data and its role in optimizing operational efficiency as well as enhancing decision-making in sustainable warehousing. There is also an urgent need to conduct more studies into the various sustainable management practices in warehouses to reduce their environmental footprint
A Multidimensional Analysis of Health and Work Participation Among Older Indian Adults
No full textThe world faces a demographic shift marked by global population ageing, particularly in low- and middle-income countries. Despite their growing numbers, older adults remain underrepresented in health research, especially regarding their work participation and its impact on well-being. India’s commitment to Sustainable Development Goals (SDGs), notably SDG 3, emphasizes health and well-being for all, underscoring the need to study older adults. This study examines the relationship between work status and health among adults aged 45 and above, representing a vital workforce segment. Using data from Wave 1 of the Longitudinal Ageing Study in India (LASI), ordered logistic regression and logistic regression were applied to assess physical and mental health indicators. Results reveal that withdrawal from the workforce negatively affects health, with previously employed but currently non-working individuals showing the poorest health outcomes. Socio-demographic factors like levels of education, place of residence, and marital status also significantly influence health
Carbon Dot Soil Enhancement: Creating a New Era of Environmentally Conscious and Climate-Adaptive Agriculture
No full textBackground: Synthesis of nanomaterials is highly encouraged due to its efficiency in eliminating the use of toxic agents during synthesis, it is environmentally friendly, easy to synthesize and cost effective. Main Body of Abstract: In recent years, there has been a significant interest on carbon dot for various environmental applications, pollutants removal, carbon sequestration, and soil amelioration. Carbon dots (CDs)has numerous distinctive properties, which makes it a reliable, for varied contaminants elimination. The pH of the impacted soil was 5.75±1 (acidic), while the pH of the natural soil was 7.84±1 (alkaline).Soil properties were examined: texture, EC, moisture content, N. TOC, and phosphate. Characterization of the Biomass revealed that EDX, showed 69.10% for C, 7.20% for O, 2.22% for Na, 3.20 for Fe, 0.23 for Ca, and 0.33 for Si. This simply demonstrated that the plant extract did more than just act as a bio reductant; the X-ray detects the structural layers based on the d-spacing of the clay minerals. the uncovered eye of the UV-visible spectroscopy depicts the biomass synthesis, demonstrating its colour change from brown to greenish. Fourier Transform Infrared Spectroscopy (FTIR) spectroscopy helps to identify the primary bands functional groups, Transmission electron microscopy (TEM) showed separated and spherical packed nanoparticles in cocci-shaped form. The Carbon dot (CDs) was used as an amendment in stimulating the impacted soil. The total heterotrophic bacterial count(THBC), for the natural attenuation (Control) (0-84days) ranged between 31.33±1.53 and 119.00±9.64 and for the bio stimulation set up, concentration A in carbon dot at the initial stage shows 30.33±0.58 and 68.67±1.5, concentration B showed 31.67±1.53 and 69.67±4.51The effect of the treatment was analyzed by monitoring the TPH levels of the polluted samples within 86days at the interval of four weeks. From the different amendments used it was observed that within the first and the last week of exposure the values of TPH reduced drastically with carbon dot having the insignificant values of (1.36±2).The result secured from the GC-FID shows that (Natural /control sample comprising of a percentage of contaminated and uncontaminated soil without amendment) were in the range of 1071.62±0.54 and 84.27±0.01, for the 1.0% whereas the 10% recorded 12504.50±0.71 and 200.08±0.16 within the period of exposure, drastic reduction of TPH was observed within the early and the final stage of the laboratory experiment, for the impacted soil, Carbon dot, concentration A were within 1026.52±0.01 and53.88±0.00, while for the B they are 455.71±0.15 and 11.54±0.01, for C 182.38±.011 and 1.37±0.01, fact has been established that cfu/g counts are higher in polluted soil than unpolluted soil, and microbial counting of a contaminated site is the simplest method to monitoring microbial activities that can be used for bioremediation. Conclusion: Studies showed that CDs is currently promoted as a way to start a “doubly green revolution “it has been applied in environmental treatment, and in other vital areas with beautiful outcome
Assessment of Biological Contamination in the Water Supply of Barangay San Pablo, Tubod, Surigao Del Norte, Philippines
No full textThis study evaluated the biological contaminants of the water supply in Barangay San Pablo, Tubod, Surigao del Norte in collaboration of Local Government Unit of Tubod. Specifically, it aimed to determine the Total Bacterial Count, and Most Probable Number (MPN) of Total and Fecal Coliform; the colony forming unit of total bacterial count through water sample analysis for the health safety of the beneficiaries. Water samples were collected from four key points - watershed, reservoir effluent, pipeline, and household taps in three separate sampling time. Laboratory analysis showed that Total Coliform recorded >8 MPN/mL were noted across sampling periods. The Fecal Coliforms levels ranged from 0 to 4.6 MPN/mL. The Total Bacterial Count was 502 to 593 CFU/mL with the mean of 539.4 CFU/mL. The statistical analysis showed a significant difference with the p = 0.000 compared to Philippine National Drinking Water Quality Standard which sets at <500 CFU/mL acceptable limits. This means that the water supply was contaminated with bacteria including Total and Fecal Coliform rendering unsafe for drinking. The contaminations attributed by fish fecal, human recreational activities and the presence of livestock in the vicinity of watershed and throughout the distribution system. The study recommends regular monitoring and intensive water treatment facility to ensure safe drinking water and sustainable water management which also an essential steps in attaining SDG 6: Clean Water and Sanitation. 
Ground Coffee is the Best for Pustular Wound Healing
No full textGround coffee is a very popular drink around the world, and it is also an excellent ingredient for external wound healing. Ground coffee is a very useful external medicine because it has robust antibacterial, antioxidant, and anti-inflammatory properties. It does not cause allergic reactions or side effects but protects against bacterial contamination and accelerates the healing of pustular wounds. Clinical experiences using ground coffee as a natural substance have shown good adaptation with wound tissue and resulted in a smooth wound-healing process without showing any allergy or other side effects. The application of ground coffee for wound healing has combined phenomenal traditional medicine and scientific investigation, resulting in a simple, economical, non-intimidating, and complication-free procedure that is beneficial to public health
About Karapanagiotis’s Article “The Shroud of Turin: An Overview of the Archaeological Scientific Studies”
No full textThe Shroud of Turin is an archaeological artifact that, due to its extraordinary characteristics, continues to stimulate scholarly interest, especially regarding the formation of the body image on the burial cloth and the mechanism responsible for it. Three main hypotheses have been proposed: (i) the work of a forger, (ii) a miraculous act of the Almighty, and (iii) an event governed by natural laws. Karapanagiotis’s article supports hypothesis (i), suggesting that the linen cloth is the work of an artist or forger. His article presents an overview of various studies on the Shroud, which he uses to argue that the burial linen of the Nazarene is a forgery. While we support the hypothesis of a natural formation process, we find it necessary to respond to Karapanagiotis’s claims. Notably, he cites one of our articles to refute the radiative hypothesis, but unfortunately he chooses the least appropriate one. In the scientific literature, there are other, more relevant articles of ours that effectively demonstrate the inadequacy and fallacies of this hypothesis. In this paper, we will cite these works, which draw upon both theological and physical perspectives to highlight the shortcomings of the radiative image formation mechanism
Reel Landscapes, Real Gains: The Rise of Greece as a Global Film Production Hub and Its Impact on the Local Economy
No full textSince 2019, Greece has emerged as a rapidly growing hub for domestic and international film and television productions, driven by diverse landscapes, urban environments, and supportive legislative reforms. This paper explores the factors behind this boom, including Greece’s enhanced cash rebate schemes, streamlined bureaucracy, and establishment of regional Film Offices. It highlights the country’s rich and varied settings—from snow-capped mountains to historic urban neighborhoods—offering filmmakers versatile backdrops beyond the traditional sea-and-sun imagery. The study traces the history of film productions in Greece, from early international classics to recent blockbusters, and examines the substantial economic benefits these productions generate through job creation, local spending, and tourism promotion. It also discusses the emerging potential of film tourism as a long-term economic driver, drawing on global examples and the success of prior productions like Mamma Mia!. While acknowledging ongoing challenges, the article argues that Greece’s audiovisual sector is positioned for sustained growth and increased global visibility. The synergy of policy innovation and cinematic appeal presents Greece with a significant opportunity to become a premier destination for international filmmaking and film-induced tourism
Semantic Duality in Translation: Auto-Antonyms in English Versions of the Quran
No full textA great deal of research work, in the field of lexical semantics, has been made for investigating antonyms either within or across languages. Yet, notably, auto antonymy, in terms of research, has been received relatively little scholarly attention. This study highlights the potential usefulness to gain new theoretical insights into the effect of context in shaping Quranic auto-antonyms that are not auto-antonyms by definition. The researcher was stimulated by the semantic pragmatic embellishment in the Quranic rhetoric in terms of forming self-opposing meanings within one lexical item when subject to the authority of context. This is a comparative, qualitative study that aims to assess, with regard to translation, the different ways of addressing auto-antonyms brought about by context. The study has been applied on five of the most common and credible English versions of the Quran in terms of accuracy and fluency. A purposive sample of contextual Quranic auto antonyms were selected and consulted from different academic references. The findings demonstrated that contextual Quranic auto-antonyms are ambiguous, and accordingly, do not lend themselves seamlessly to translation. In addition, they revealed that every translator has their own personal touch in approaching self-opposed words/phrases in the Quran
Assessment of Groundwater Quality in Nasarawa West, Nigeria: Physicochemical Parameters, Seasonal Variation, and Water Quality Index Evaluation
No full textGroundwater quality in rural communities of Nasarawa West Senatorial District, Nigeria was assessed through physicochemical analysis and Water Quality Index (WQI) computation. Fifty water samples from boreholes and hand-dug wells across five Local Government Areas (LGAs) (Karu, Keffi, Kokona, Nasarawa, Toto) were collected in dry and wet seasons. Key parameters (pH, total dissolved solids, electrical conductivity, turbidity, dissolved oxygen, biochemical oxygen demand, nitrate, phosphate, sulfate, chloride, hardness) were measured and compared to World Health Organization (WHO) and Nigeria Standard (NSDWQ) guidelines. Results indicate slightly acidic to neutral pH (6.1–6.8) and moderate mineral content (TDS 149–426 mg/L in wet season boreholes) within permissible limits, but turbidity and nutrient levels varied widely by location and water source. Seasonal trends were evident: rainfall dilution improved some water quality parameters (e.g. nitrates and TDS in certain LGAs), whereas others experienced contamination spikes (e.g. Toto well turbidity). The computed WQI revealed all borehole sources as “Good” quality (WQI < 50) year-round except Toto’s boreholes, which were marginally poorer (WQI ~58 68). In contrast, shallow hand-dug wells often showed oor to unsuitable quality (WQI > 100), especially during the dry season in Nasarawa (WQI 461) and the wet season in Toto (WQI 887). Spatially, water quality challenges were most severe in Nasarawa and Toto LGAs, whereas Karu, Keffi, and Kokona fared better. The discussion interprets these findings in the context of sustainable development goal 6 (SDG-6) for safe water, highlighting how rural groundwater sources remain vulnerable to seasonal and anthropogenic influences. We recommend prioritizing borehole development, protecting wellheads from contamination, and regular monitoring to improve drinking water safety in the study area