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Search Results (22)
  • Open Access

    ARTICLE

    Lineament Mapping in Batie Area (West-Cameroon) Using Landsat-9 Operational Land Imager/Thermal Infrared Sensor and Shuttle Radar Topography Mission Data: Hydrogeological Implication

    Jean Aime Mono1,2,*, Apollinaire Bouba3, Jean Daniel Ngoh4, Olivier Ulrich Igor Owono Amougou5, Françoise Martine Enyegue A Nyam6, Théophile Ndougsa Mbarga7

    Revue Internationale de Géomatique, Vol.33, pp. 135-154, 2024, DOI:10.32604/rig.2024.049966

    Abstract This study focuses on the mapping of lineaments using remote sensing techniques and Geographic Information Systems. The aim is to carry out a statistical analysis of the lineaments in order to better understand the organization of fracturing in the Batie district, and to identify areas of high fracturing density and their relationship with the hydrographic network. The methodology implemented to achieve these objectives is based on the processing and analysis of Landsat 9 Operational Land Imager/Thermal Infrared Sensor (OLI/TIRS) satellite imagery and Shuttle Radar Topography Mission (SRTM) data covering the study area. After essential pre-processing of data, the following processing… More >

  • Open Access

    ARTICLE

    Contributions of Remote Sensing and GIS to the Inventory and Mapping of Colonial Geodetic Markers in the Katangese Copper Belt

    John Tshibangu Wa Ilunga1,*, Donatien Kamutanda Kalombo1, Olivier Ngoie Inabanza1, Dikumbwa N’landu1,2, Joseph Mukalay Muamba1,3, Patrice Amisi Mwana1, Urcel Kalenga Tshingomba1, Junior Muyumba Munganga1, Catherine Nsiami Mabiala1

    Revue Internationale de Géomatique, Vol.33, pp. 15-35, 2024, DOI:10.32604/rig.2024.046629

    Abstract The mutation of spaces observed in the Katangese Copper Belt (KCB) causes significant topographical changes. Some colonial geodetic markers are easily noticeable on many of the hills making up the KCB. These hills are subject to mining which ruins the completeness of the network of triangulations: geometric and trigonometric Katangese. In order to keep control of the latter, the study shows on the one hand the possibility of using SRTM data (Shuttle Radar Topography Mission) in the monitoring of the macro-change of the reliefs, from 442 positions, and on the other hand, an indirect (remote) inventory method of the existing… More >

  • Open Access

    ARTICLE

    THE EFFECTS OF VARIATION IN SHAPE OF SMOKE RESERVOIRS AND NUMBERS AND DISTRIBUTION OF SMOKE EXTRACTION POINTS ON THE TENABILITY WITHIN A COMPARTMENT

    HM Iqbal Mahmuda,b,*,† , Vijay Rajaramb, Khalid Moinuddinb

    Frontiers in Heat and Mass Transfer, Vol.20, pp. 1-17, 2023, DOI:10.5098/hmt.20.2

    Abstract This study has examined some important aspects of the engineered smoke control system, namely the shape of smoke reservoirs and the quantity and distribution of smoke extract points within a smoke compartment. Three different shapes of smoke reservoirs have been selected for analysis, namely square, rectangular, and T-shaped. The shape of the smoke reservoir has been varied, but the area, length and height have been kept identical. Four different configurations of extract points have been used in each shape of the reservoir: a single extract point located at the corner of the smoke reservoir, a single extract point located at… More >

  • Open Access

    ARTICLE

    Computational Modeling of Reaction-Diffusion COVID-19 Model Having Isolated Compartment

    Muhammad Shoaib Arif1,2,*, Kamaleldin Abodayeh1, Asad Ejaz2

    CMES-Computer Modeling in Engineering & Sciences, Vol.135, No.2, pp. 1719-1743, 2023, DOI:10.32604/cmes.2022.022235

    Abstract Cases of COVID-19 and its variant omicron are raised all across the world. The most lethal form and effect of COVID-19 are the omicron version, which has been reported in tens of thousands of cases daily in numerous nations. Following WHO (World health organization) records on 30 December 2021, the cases of COVID-19 were found to be maximum for which boarding individuals were found 1,524,266, active, recovered, and discharge were found to be 82,402 and 34,258,778, respectively. While there were 160,989 active cases, 33,614,434 cured cases, 456,386 total deaths, and 605,885,769 total samples tested. So far, 1,438,322,742 individuals have been… More >

  • Open Access

    ARTICLE

    A Methodology to Reduce Thermal Gradients Due to the Exothermic Reactions in Resin Transfer Molding Applications

    Aouatif Saad1,*, Mohammed EL Ganaoui2

    FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.1, pp. 95-103, 2023, DOI:10.32604/fdmp.2023.022014

    Abstract Resin transfer molding (RTM) is among the most used manufacturing processes for composite parts. Initially, the resin cure is initiated by heat supply to the mold. The supplementary heat generated during the reaction can cause thermal gradients in the composite, potentially leading to undesired residual stresses which can cause shrinkage and warpage. In the present numerical study of these processes, a one-dimensional finite difference method is used to predict the temperature evolution and the degree of cure in the course of the resin polymerization; the effect of some parameters on the thermal gradient is then analyzed, namely: the fiber nature,… More >

  • Open Access

    ARTICLE

    Performance Analysis of Magnetic Nanoparticles during Targeted Drug Delivery: Application of OHAM

    Muhammad Zafar1,#,*, Muhammad Saif Ullah1,#, Tareq Manzoor2, Muddassir Ali3, Kashif Nazar4, Shaukat Iqbal5, Habib Ullah Manzoor6, Rizwan Haider1, Woo Young Kim7,*

    CMES-Computer Modeling in Engineering & Sciences, Vol.130, No.2, pp. 723-749, 2022, DOI:10.32604/cmes.2022.017257

    Abstract In recent years, the emergence of nanotechnology experienced incredible development in the field of medical sciences. During the past decade, investigating the characteristics of nanoparticles during fluid flow has been one of the intriguing issues. Nanoparticle distribution and uniformity have emerged as substantial criteria in both medical and engineering applications. Adverse effects of chemotherapy on healthy tissues are known to be a significant concern during cancer therapy. A novel treatment method of magnetic drug targeting (MDT) has emerged as a promising topical cancer treatment along with some attractive advantages of improving efficacy, fewer side effects, and reduce drug dose. During… More >

  • Open Access

    ARTICLE

    The Glenn Shunt Revisited, A Single Center Registry in Ain Shams University Cardiology Department

    Mina Tewfik1,2,*, Maiy El-Sayed1, Alaa Roushdy1, Soha Romeih2,3, Dina Ezzeldin1, Hebatalla Attia1

    Congenital Heart Disease, Vol.17, No.1, pp. 71-85, 2022, DOI:10.32604/CHD.2022.018372

    Abstract Background: Bidirectional Glenn shunts have long been available as palliative procedures for patients with single ventricle physiology that is, patients unsuitable for biventricular repair. In our country they are performed at an older age than that recommended by the literature. So, we aim to assess post bidirectional Glenn shunt patients to detect the presence of any complications and to evaluate their functional capacity. Methods: This was a descriptive study that included all patients who underwent a bidirectional Glenn shunt and were referred for follow up in Ain shams university hospitals. History taking including NYHA class and physical activity, clinical examination,… More >

  • Open Access

    ARTICLE

    Efficient Model for Emergency Departments: Real Case Study

    Mohamed Abdel-Basset1, Abduallah Gamal1, Rehab Mohamed1, Mohamed Abouhawwash2,3,*, Abdulwahab Almutairi4, Osama M. ELkomy1

    CMC-Computers, Materials & Continua, Vol.70, No.2, pp. 4053-4073, 2022, DOI:10.32604/cmc.2022.020048

    Abstract There are several challenges that hospitals are facing according to the emergency department (ED). The main two issues are department capacity and lead time. However, the lack of consensus on performance criteria to evaluate ED increases the complication of this process. Thus, this study aims to evaluate the efficiency of the emergency department in 20 Egyptian hospitals (12 private and 8 general hospitals) based on 13 performance metrics. This research suggests an integrated evaluation model assess ED under a framework of plithogenic theory. The proposed framework addressed uncertainty and ambiguity in information with an efficient manner via presenting the evaluation… More >

  • Open Access

    ARTICLE

    Effect of Encapsulation Combined with Microwave Heating on Self-Healing Performance of Asphalt Mixture

    Benan Shu1,*, Lixian Guo1, Bing Qiu1, Tengyu Yang1, Tao Sun1, Wenjun Qiu1, Min Zhou1, Putao Song2, Yuanyuan Li3, Diego Maria Barbieri4, Shaopeng Wu5,*

    Journal of Renewable Materials, Vol.9, No.10, pp. 1781-1794, 2021, DOI:10.32604/jrm.2021.015659

    Abstract As an innovative maintenance technology of asphalt pavement, encapsulated rejuvenator used to improve its self-healing performance has been widely investigated by researchers in recent years. In this work, the selfhealing properties of asphalt mixture with and without encapsulations were comparatively studied considering these parameters: Healing time, healing cycles and microwave heating. Three-point bending strength recovery test and fatigue loading cycles recovery test were conducted for two kinds of encapsulations containing the healing agents present inside the asphalt mixture, namely compartmented Ca-alginate/SiO2 fiber and compartmented Ca-alginate/graphene oxide fiber. The results showed that the optimum healing time was three days. After the… More >

  • Open Access

    REVIEW

    Lactate reloaded–reevaluation of the importance of lactate monitoring in the management of adult sepsis in the emergency department

    GABOR XANTUS1,*, BALINT KISS2, GYULA MOLNAR2, CANDICE MATHESON3, V. ANNA GYARMATHY4, PETER L. KANIZSAI5

    BIOCELL, Vol.45, No.3, pp. 445-449, 2021, DOI:10.32604/biocell.2021.014754

    Abstract For about a quarter of a century, monitoring lactate levels and/or lactate clearance has been an unquestionable cornerstone in sepsis management. The elevated lactate level appeared to be an independent predictor of mortality, and the consequent metabolic acidosis was thought to explain a number of pathophysiological changes seen in septic shock. Recent physiological and clinical findings seem to challenge the adverse role of lactic acidosis in sepsis. Evidence suggests that lactate levels are not necessarily directly proportional to either tissue or cellular hypoxia, and conversely, despite high lactate levels, increased peripheral tissue oxygen pressure can be measured in adult patients… More >

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