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  • Open Access


    Monitoring and Prediction of Indoor Air Quality for Enhanced Occupational Health

    Adela POP (Puscasiu), Alexandra Fanca*, Dan Ioan Gota, Honoriu Valean

    Intelligent Automation & Soft Computing, Vol.35, No.1, pp. 925-940, 2023, DOI:10.32604/iasc.2023.025069

    Abstract The amount of moisture in the air is represented by relative humidity (RH); an ideal level of humidity in the interior environment is between 40% and 60% at temperatures between 18° and 20° Celsius. When the RH falls below this level, the environment becomes dry, which can cause skin dryness, irritation, and discomfort at low temperatures. When the humidity level rises above 60%, a wet atmosphere develops, which encourages the growth of mold and mites. Asthma and allergy symptoms may occur as a result. Human health is harmed by excessive humidity or a lack thereof.… More >

  • Open Access


    Response of Tomato Sugar and Acid Metabolism and Fruit Quality under Different High Temperature and Relative Humidity Conditions

    Yanjiao Zheng1, Zaiqiang Yang1,2,*, Tingting Wei1, Heli Zhao1

    Phyton-International Journal of Experimental Botany, Vol.91, No.9, pp. 2033-2054, 2022, DOI:10.32604/phyton.2022.019468

    Abstract The combined stress of high temperature and high relative air humidity is one of the most serious agrometeorological disasters that restricts the production capacity of protected agriculture. However, there is little information about the precise interaction between them on tomato fruit quality. The objectives of this study were to explore the effects of the combined stress of high temperature and relative humidity on the sugar and acid metabolism and fruit quality of tomato fruits, and to determine the best relative air humidity for fruit quality under high temperature environments. Four temperature treatments (32°C, 35°C, 38°C,… More >

  • Open Access


    Experimental Synthesis of Polyacrylic-Type Superabsorbent Polymer and Analysis of Its Internal Curing Performances

    Jin Yang1,2, Wen Liang1, Xingyang He1,2,*, Ying Su1,2, Fulong Wang1, Tie Wang1, Jianxiang Huang1

    FDMP-Fluid Dynamics & Materials Processing, Vol.18, No.1, pp. 15-27, 2022, DOI:10.32604/fdmp.2022.018135

    Abstract A solution polymerization method has been used to synthesize a polyacrylic-type superabsorbent polymer (SAP). The influence of various influential factors, such as the temperature, neutralization degree, cross-linking agent, and initiator, on the water absorption capacity of SAP has been investigated. The results show that the absorption can display a non-monotonic behavior depending on the synthesis conditions. The absorption can also change according to the pH, ion types and ion concentration. As the pH value increases, the water absorption capacity decreases significantly. It also decreases if the Na+ concentration becomes higher and becomes particularly low in solutions More >

  • Open Access


    Association between Temperature and Relative Humidity in Relation to COVID-19

    Ansari Saleh Ahmar1,*, M. A. El Safty2, Samirah Al Zahrani2, R. Rusli3, Abdul Rahman3

    Intelligent Automation & Soft Computing, Vol.30, No.3, pp. 795-803, 2021, DOI:10.32604/iasc.2021.016868

    Abstract The aim of this study is to determine the association between temperature and humidity in relation to COVID-19 above 3°C. This was carried out in the cities of Bandung and Surabaya which have temperatures of about 22°C to 31°C. Data was analyzed using descriptive analysis and the Pearson and Spearman correlation for normally and abnormally distributed data. The results showed that there was no association between people under monitoring (ODP)/close contact, patients under surveillance (PDP)/suspect, and COVID-19 confirmed cases in relation to the temperature and humidity in Bandung and Surabaya. Furthermore, there was no relationship More >

  • Open Access


    Numerical Study of the Distribution of Temperatures and Relative Humidity in a Ventilated Room Located in Warm Weather

    J. Serrano-Arellano1, J. M. Belman-Flores2,*, I. Hernández-Pérez3, K. M. Aguilar-Castro3, E. V. Macías-Melo3, F. Elizalde-Blancas2, J. M. Riesco-Ávila2, F. J. García-Rodríguez4

    CMES-Computer Modeling in Engineering & Sciences, Vol.123, No.2, pp. 571-602, 2020, DOI:10.32604/cmes.2020.08677

    Abstract In the present study, an analysis of the heat and mass transfer in a ventilated cavity in a warm climate zone was carried out to analyze, among others, the temperatures and percentage of relative humidity (RH). The governing equations of the mathematical model were solved through the finite volume method. We used the k-ε turbulence mode to find the results of the variables of interest in seven climate records on a given day. The velocity of the inlet flow of the air-H2O mixture was varied through the Reynolds number (Re) from 500 to 10000. The outdoor weather… More >

  • Open Access


    Pollen production in sunflower (Helianthus annuus L.) is affected by air temperature and relative humidity during early reproductive growth

    Astiz V1, LF Hernández2,3

    Phyton-International Journal of Experimental Botany, Vol.82, pp. 297-302, 2013, DOI:10.32604/phyton.2013.82.297

    Abstract During microsporogenesis, sunflower florets might be exposed to episodes of day- and night-time temperatures exceeding 30 and 20 °C, respectively, that can affect pollen availability and consequently plant’s yield. The relationship between air temperature and relative humidity during the meiotic phase of microsporogenesis, and the quantity and quality of pollen produced by the flowers, were studied in two sunflower hybrids during two years. The hybrids were grown on irrigated plots in Bahía Blanca (38° 45’ S; 62° 11’ W) in three planting dates (PD) at a density of 5.6 plants/m2. Flowers were consecutively taken as… More >

  • Open Access


    Feasibility of Using Wood Chips to Regulate Relative Humidity Inside a Building: A Numerical Study

    Dimitri Bigot1,*, Cyril Ott1, Stéphane Guichard1, Bruno Malet-Damour1

    Journal of Renewable Materials, Vol.7, No.6, pp. 505-516, 2019, DOI:10.32604/jrm.2019.04019

    Abstract The use of bio-based materials in buildings has become more and more significant last years. In most of the cases, their health properties and natural provenance have made them a great solution to face global climate warming and the new policies to reduce building energy consumption. In many thermal problems, bio-based materials can allow to optimize the building thermal behavior according to its energy consumption and inside comfort conditions. So it is when they are used as an insulation material in the building. However, it is not the case in this paper. In fact, the… More >

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