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  • Open Access

    ARTICLE

    NUMERICAL INVESTIGATIONS ON FLOW STRUCTURE AND HEAT TRANSFER IN A SQUARE DUCT EQUIPPED WITH DOUBLE VORIFICE

    Amnart Boonloia, Withada Jedsadaratanachaib,*

    Frontiers in Heat and Mass Transfer, Vol.14, No.1, pp. 1-11, 2020, DOI:10.5098/hmt.14.27

    Abstract Numerical predictions on heat transfer characteristic, flow topology and thermal performance assessment in a square duct are presented. The passive technique, insertion of the vortex generator, is opted to develop the heat transfer rate in the square duct heat exchanger. The vortex generator of the present research is Double V-Orifice (DVO). The square duct equipped with DVO is tested with various parameters. The influences of DVO height, b, to the duct height, H, or b/H, gap spacing between the outer edge of the orifice and the duct wall, s, to the duct height or s/H and flow directions (tip-pointing-Downstream and… More >

  • Open Access

    ARTICLE

    PREDICTION OF MASS TRANSFER COEFFICIENT OF THE CONTINUOUS PHASE IN A STRUCTURED PACKED EXTRACTION COLUMN IN THE PRESENCE OF SIO2 NANOPARTICLES

    Fereshteh Salimi Nanadegani, Bengt Sunden*

    Frontiers in Heat and Mass Transfer, Vol.14, No.1, pp. 1-11, 2020, DOI:10.5098/hmt.14.21

    Abstract In this experimental study, mass transfer and hydrodynamic parameters of water/kerosene/acetic acid system in a packed column were investigated, in which the mass transfer direction was set from the continuous phase (saturated water of kerosene and acetic acid) to the dispersed phase (saturated kerosene of water) in all the experiments. To assess the impact of nanoparticles on mass transfer, the experiments were performed in the presence of SiO2 nanoparticles and absence of the nanoparticles. The results showed that the addition of the nanoparticles to the base fluid (saturated kerosene of water) increased the mass transfer efficiency to the critical concentration,… More >

  • Open Access

    ARTICLE

    COMPARISON OF CFD AND EMPIRICAL MODELS FOR PREDICTING WALL TEMPERATURE AT SUPERCRITICAL CONDITIONS OF WATER

    S. Ananda, S. Suresha, R. Dhanuskodib, D. Santhosh Kumarb,*

    Frontiers in Heat and Mass Transfer, Vol.14, No.1, pp. 1-9, 2020, DOI:10.5098/hmt.14.8

    Abstract The present work investigates the wall temperature prediction at supercritical pressure of water by CFD and compares the prediction of CFD and that of 11 empirical correlations available in literature. Supercritical-water heat transfer experimental data, covering a mass flux range of 400-1500 kg/m2s, heat flux range of 150-1000 kW/m2, at pressure 241 bar and diameter 10 mm tube, were obtained from literature. CFD simulations have been carried out for those operating conditions and compared with experimental data. Around 362 experimental wall temperature data of both heat transfer enhancement and heat transfer deterioration region have been taken for comparison. A visual… More >

  • Open Access

    ARTICLE

    Interventional Studies in Psycho-Oncology: Development, Evaluation, and Implementation in Clinical Practice

    K. Lamore, D. Ogez

    Psycho-Oncologie, Vol.16, No.1, pp. 166-172, 2022, DOI:10.3166/pson-2022-0182

    Abstract This article discusses the methods used to develop, evaluate, and implement new psycho-oncology interventions in clinical practice. In this regard, two world-widely used models are presented to provide scientific insight to the different actors involved in the research. Interventional research concerns clinicians, researchers, institutional actors, and patients to develop new projects using methodological rigor and to improve the conditions of patients and relatives.

    Résumé
    Cet article a pour objectif de décrire les méthodes pouvant être utilisées pour développer, évaluer et implé- menter en pratique clinique de nouvelles interventions en psycho-oncologie. Pour cela, deux modèles de référence à l’international… More >

  • Open Access

    ARTICLE

    Adhesion and Implementation of a Cardiac Coherence Program to Reduce Anxiety in Patients with Peritoneal Carcinomatosis before Surgery: a Randomized Pilot Study

    Adhésion et implémentation d’un programme de cohérence cardiaque visant à réduire l’anxiété de patients opérés pour une carcinose péritonéale : étude pilote randomisée

    E. Guerdoux, L. Coutant, M. Del Rio, S. Gourgou, F. Quenet, G. Ninot

    Psycho-Oncologie, Vol.16, No.1, pp. 192-198, 2022, DOI:10.3166/pson-2022-0177

    Abstract Objective: To evaluate the implementation of a daily practice using cardiac coherence in patients with peritoneal carcinosis who underwent surgery.
    Materials and methods: Open, single-centre, controlled, randomized, and non-comparative phase II study, including 20 control patients versus 40 patients trained with biofeedback to use a breathing guide that will record their autonomous practice at home.
    Expected results: Successful adhesion of this nonpharmacological intervention before and after surgery, which may characterize parameters in favor of its implementation and evaluation of its impact on anxiety.
    Perspectives: Efficacy should then be assessed to transfer this supportive care to other patients.

    Résumé
    ObjectifMore >

  • Open Access

    ARTICLE

    Micropropagation of Daylily (Hemerocallis fulva) from Crown-Tip Explants and Assessment of Somaclonal Variation of in Vitro-Propagated Plants Using SCoT Markers

    Esraa E. Shalan1, Said S. Soliman1, Ahmed A. Mahmoud1, Jameel M. Al-Khayri2,*, Salha M. ALshamrani3, Fatmah A. Safhi4, Areej S. Jalal4, Diaa Abd El-Moneim5, Abdallah A. Hassanin1,*

    Phyton-International Journal of Experimental Botany, Vol.92, No.7, pp. 2183-2196, 2023, DOI:10.32604/phyton.2023.028537

    Abstract Determination of the somaclonal variation of in vitro-propagated plants is crucial to determine the appropriate micropropagation protocol and growth regulators for commercial scale multiplication. In this research, nine multiplication media (MM) augmented with different concentrations of 6-benzyl adenine (BA), Kinetin (Kin), and Thidiazuron (TDZ), Three rooting media (RM) supplemented with three levels of α-naphthalene acetic acid (NAA) and three types of soil mixtures (v/v); Coco peat/Vermiculite/Sand (CVS), Peat moss/Perlite/Sand (PPS) and Peat moss/Perlite (PP) were used in the micropropagation protocol of daylily plants. MM2 showed the maximum shoot length and the number of leaves, while MM9 showed the maximum number… More >

  • Open Access

    ARTICLE

    Pollination Biology of the Endangered Herbal Medicines Dendrobium chrysotoxum (Orchidaceae)

    Kai Luo1, Yanbing Bai1, Yan Jiang1, Guiling Li1, Min Jia1, Yongguo He1, Zhijun Yao1, Ziwei Xiao1, Xiaoqiong Liu1, Wenjie Liu2, Shanshan Yin1,*, Zesheng Li1,*

    Phyton-International Journal of Experimental Botany, Vol.92, No.7, pp. 1975-1986, 2023, DOI:10.32604/phyton.2023.028232

    Abstract Pollination biology studies of the endangered herbal medicines Dendrobium chrysotoxum were conducted in natural pollination conditions using flower observation, pollinator observation and artificial pollination experiments. Populations of D. chrysotoxum with fragrance and nectar were pollinated by Ctenoplectra davidi Valhalla (Hymenoptera: Apidae) species. The floral structure of D. chrysotoxum adapted precisely to its pollinators. Flowers had a low capsule setting (0.17%) under natural conditions. However, compared to open pollination, artificial pollination experiments showed a significant increase in capsule setting, and D. chrysotoxum was cross-compatible and self-compatible, but there was pollinator limitation also. This study will provide important information for the preservation… More >

  • Open Access

    ARTICLE

    The Euthanasia Era: Grief Intervention in the Context of Anticipated Death

    À l’ère de l’euthanasie : la clinique du deuil en contexte de mort anticipée

    P. Laperle, M. Achille, D. Ummel

    Psycho-Oncologie, Vol.16, No.2, pp. 253-259, 2022, DOI:10.3166/pson-2022-0194

    Abstract Oncology and palliative care professionals benefit from considering the effect of euthanasia on their practice. Choosing the circumstances of one’s death is the zeitgeist, which impacts care trajectories. It becomes relevant to examine the influence of anticipated death (euthanasia or natural death) both on the patient and bereaved loved ones’ experience. We propose a relational approach and grief interventions based on the imprints left by death and the relational landscape of bereavement.

    Résumé
    Les soignants en oncologie et en soins palliatifs gagnent à considérer les effets de l’euthanasie sur leur pratique. Choisir les circonstances de sa mort est dans… More >

  • Open Access

    ARTICLE

    Healing from Human to Human

    Soigner d’humain à humain

    D. Gros

    Psycho-Oncologie, Vol.16, No.2, pp. 260-264, 2022, DOI:10.3166/pson-2022-0192

    Abstract To fulfill its function as well as possible, medical art requires considering each patient in the totality of his biological and biographical being. However, the medical world faces a model fond of standardization of practices and inclined to give primacy to the requirements of science and machines over those of humans. As health professionals, we all strive daily to preserve a harmonious alliance between science and humanity. We aspire to maintain it, but we are aware of the threats hanging over it. This awareness should encourage us to carry out an interdisciplinary reflection. A multidimensional object, infinitely overflowing the biomedical… More >

  • Open Access

    ARTICLE

    Cartographie numérique du risque d’inondation dans le Nord-Est de la Tunisie par la méthode du rapport de fréquence et l’indice statistique

    Radhia Mansour, Abdessalem El Ghali

    Revue Internationale de Géomatique, Vol.29, No.3, pp. 339-360, 2019, DOI:10.3166/rig.2019.00093

    Abstract Flash floods are a type of natural disaster that poses a major threat to the population, urban constructions and road infrastructure and the environment. In Tunisia, this phenomenon is known since the sixties and has continued until today. The most important ones were recorded during the rainy years of 1969, 1983, 2003 and 2012. In order to identify areas at risk of flooding and reduce the vulnerability of the stakes, a Flash Flood Risk Mapping (FFRM) approach has been adopted for the development of a flood risk prevention plan (PPRI) in northeastern Tunisia. This method consists in: 1) integrating into… More >

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