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Rare earth based MgPm_(2)X_(4)(X=S,Se) spinel chalcogenides for spintronic and thermoelectric applications

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Journal of Rare Earths 2024年第8期42卷 1577-1585,I0006页

作者： Tariq M.al-Daraghmeh Omar Zayed Ghulam M.Mustafa Taharh Zelai Bisma Younas hind albalawi S.Bouzgarrou Othman Hakami Q.Mahmood Khaild I.Hussein Basic Sciences Department King Abdullah Ⅱ School of EngineeringPrincess Sumaya University For TechnologyP.O.Box 1438Al-jubaiha11941AmmanJordan Department of Physics Division of Science&TechnologyUniversity of EducationLahorePakistan Department of Physics Faculty of ScienceJazan University JazanSaudi Arabia Department of Physics The University of LahoreLahorePakistan Department of Physics College of SciencesPrincess Nourah bint Abdulrahman University(PNU)P.O.Box 84428Riyadh11671Saudi Arabia Department of Physics College of ScienceQassim UniversityPo.64BuraidahSaudi Arabia Laboratoire de Microelectronique et Instrumentation(UR 03/13-04) Faculte des Sciences de MonastirAvenue de I'Environnement 5000MonastirTunisia Department of Chemistry Faculty of ScienceJazan University JazanSaudi Arabia Basic&Applied Scientific Research Center Department of PhysicsCollege of ScienceImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam 31441Saudi Arabia Department of Radiological Sciences College of Applied Medical SciencesKing Khalid UniversityAbha61421Saudi Arabia

In current report,the structural,magnetic,and thermoelectric properties of RE doped MgPm_(2)X_(4)(X=S,Se) spinels were *** energy difference in ferromagnetic and antiferromagnetic states reveals the stability of MgPm_(2)(S/Se)_(4) in the ferromagnetic *** co mputation of enthalpy of formation also ascertains thermodynamic stability of crystal ***-dependent band structure and density of states analysis reveal ferromagnetic semiconducting character showing different electronic behavior in both spin *** room temperature ferromagnetism,spin polarization and Curie temperature are estimated from exchange energies *** addition,exchange constants(N_(0)α and N_(0)β),exchange energy Δ_(x)(pd),crystal ifeld energy,and double exchange mechanism were studied to explore the magnetic ***,the electrical conductivity,thermal conductivity,Seebeck co-efficient,and power factor show effect on electrons spin and their potential for thermoelectric devices.

关键词： Rare earth elements Spintronic applications Thermoelectric effects Exchange energies

Effects of using sinusoidal porous object(SPO)and perforated porous object(PPO)on the cooling performance of nano-enhanced multiple slot jet impingement for a conductive panel system

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Propulsion and Power Research 2024年第2期13卷 166-177页

作者： Fatih Selimefendigil Faiza Benabdallah Kaouther Ghachem hind albalawi Badr Malshammari Lioua Kolsi Department of Mechanical Engineering College of EngineeringKing Faisal UniversityAl Ahsa 31982Saudi Arabia Department of Mechanical Engineering Celal Bayar UniversityManisa 45140Turkey Department of Industrial Engineering and Systems College of EngineeringPrincess Nourah Bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of Physics College of SciencesPrincess Nourah Bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of Electrical Engineering College of EngineeringUniversity of Ha’ilHa’il City 81451Saudi Arabia Department of Mechanical Engineering College of EngineeringUniversity of Ha’ilHa’il City 81451Saudi Arabia

Cooling system design for thermal management of electronic equipment,batteries and photovoltaic(PV)modules is important for increasing the efﬁciency,safety operation,and long life span the *** the present study,two different cooling systems are proposed with nano-enhanced multiple impinging jets for a conductive *** present cooling systems can be used in electronic cooling and PV *** porous object(PPO)and sinusoidal porous object(SPO)are used in the jet cooling system.2D numerical analysis usingﬁnite volume method is conducted considering different values of permeability of the objects(Darcy number(Da)between 10^(-6) and 10^(-1)).When PPO is used in the cooling system,num-ber of cylinders(between 1 and 6),and size of the cylinders(between 0.015 and 0.075)are *** the case of using SPO,amplitude(between 0.1 and 2)and wave number(be-tween 1 and 12)are ***-water nanoﬂuid with cylindrical shaped nanoparticles is used as the heat transferﬂ*** permeability is changed for PPO,the average temper-ature increases by roughly 3.89℃ for a single cylinder and drops by roughly 0.57℃ for a six-cylinder *** the size of the cylinder in the PPO case at highest permeability results in temperature drop of 5.3℃.When changing the number of cylinders,cooling rate varies by about 3.6%.Wave number of SPO is more inﬂuential on the cooling performance enhancement as compared to amplitude and permeability of the *** average surface temperature drops by 12.4℃ when the wave number is increased to *** compared to reference case of jet impingement cooling without porous object,using PPO and SPO along with the nanoﬂuid result in temperature drop of 12.3℃ and 14.4℃.

关键词： Thermal management Jet impingement Perforated porous

A state-of-the-art review on geothermal energy exploration in Morocco: Current status and prospects

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Deep Underground Science and Engineering 2024年第3期3卷 302-316页

作者： Redouane Meryem Khalis hind Haissen Faouziya Sadki Othman Berkat N.Eddine Raji Mohammed Faculty of Sciences Ben M'sick CasablancaMorocco Faculty of Sciences Dhar El Mahraz FezMorocco National Office of Hydrocarbons and Mines RabatMorocco

In the last few decades, addressing the global challenge of implementation of strategies for renewable energy and energy efficiency has become ***, since 2009, has made a steadfast commitment to sustainability, with a particular focus on advancing the development of renewable energy resources. A comprehensive strategy has been formulated, centering on utilizing the country's energy potential to drive progress in this vital sector. Morocco is considered a country with abundant thermal water, indicating deep reservoirs with significant hydrothermal potential. Geothermal zones were selected based on the abundance of hot springs where water temperatures were high and geothermal gradients were significant. The abundance and importance of hot springs, combined with recent volcanism and ongoing non-tectonic activity linked to alpine orogeny, strongly suggest that these regions are promising reservoirs for geothermal energy. This great potential also extends to neighboring countries. In northeast and south Morocco, the temperature of thermal water ranges from 26 to 54℃. This study serves as an inclusive review of the geothermal potentialities in Morocco.

关键词： geothermal gradients hot springs hydrothermal potential Morocco renewable energy sustainability

A comparative in vitro study on the effect of SGLT2 inhibitors on chemosensitivity to doxorubicin in MCF-7 breast cancer cells

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Oncology Research 2024年第5期32卷 817-830页

作者： SHAHID KARIM alANOUD NAHER alGHANMI MAHA JAMal HUDA alKREATHY alAM JAMal hind A.alKHATABI MOHAMMED BAZUHAIR AFTAB AHMAD Department of Clinical Pharmacology Faculty of MedicineKing Abdulaziz UniversityJeddahSaudi Arabia Department of Biochemistry Faculty of ScienceKing Abdulaziz UniversityJeddahSaudi Arabia Department of Biochemistry College of ScienceUniversity of JeddahJeddah21959Saudi Arabia Health Information Technology Department The Applied CollegeKing Abdulaziz UniversityJeddahSaudi Arabia Pharmacovigilance and Medication Safety Unit Center of Research Excellence for Drug Research and Pharmaceutical IndustriesKing Abdulaziz UniversityJeddahSaudi Arabia

Cancer frequently develops resistance to the majority of chemotherapy *** study aimed to examine the synergistic cytotoxic and antitumor effects of SGLT2 inhibitors,specifically Canagliflozin(CAN),Dapagliflozin(DAP),Empagliflozin(EMP),and Doxorubicin(DOX),using in vitro *** precise combination of CAN+DOX has been found to greatly enhance the cytotoxic effects of doxorubicin(DOX)in MCF-7 ***,it was shown that cancer cells exhibit an increased demand for glucose and ATP in order to support their ***,when these medications were combined with DOX,there was a considerable inhibition of glucose consumption,as well as reductions in intracellular ATP and lactate ***,this effect was found to be dependent on the dosages of the *** addition to effectively inhibiting the cell cycle,the combination of CAN+DOX induces substantial modifications in both cell cycle and apoptotic gene *** work represents the initial report on the beneficial impact of SGLT2 inhibitor medications,namely CAN,DAP,and EMP,on the responsiveness to the anticancer properties of *** underlying molecular mechanisms potentially involve the suppression of the function of SGLT2.

关键词： SGLT2 Cancer Cytotoxicity ATP Cell cycle

Pediatric Hepatoblastoma: A Case Report and Review of the Literature

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Open Journal of Pediatrics 2024年第2期14卷 266-271页

作者： Hanae Bahari Hanane Hajaj hind Zahiri Ayyad Ghanam Abdeladim Babakhouya Maria Rkain Department of Pediatrics Mohammed VI University Hospital Oujda Morocco Medical School Mohammed First University Oujda Morocco

Introduction and Objective: Hepatoblastoma is the most frequent malignant embryonal liver tumor, and its incidence is increasing. Children under 3 years of age are particularly affected. The etiology is largely unknown, but a genetic predisposition exists. This case highlights the clinical and imaging characteristics and management strategies. Case Report: We report the case of an 18 months old male admitted for exploration of an abdominal mass and was diagnosed with hepatoblastoma. Conclusion: Hepatoblastoma is an aggressive tumor that begins locally and eventually metastasizes to the brain, lungs, lymph nodes, and other organs. Tumor stage at presentation and resectability are the most significant prognostic factors.

关键词： Hepatoblastoma Liver Children alpha-Fetoprotein

Attitudes and Practices of Lumbar Puncture among Students, Interns, and Residents of the Pediatric Department of the Mohammed VI University Hospital Center of Oujda, Morocco

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Open Journal of Pediatrics 2024年第3期14卷 598-608页

作者： Hasnae Elhaddadi Ayyad Ghanam hind Zahiri Amal Hamami Aziza Elouali Abdeladim Babakhouya Maria Rkain Department of Pediatrics University Hospital Center Mohammed VI Oujda Morocco Faculty of Medicine and Pharmacy Mohammed First University Oujda Morocco

Introduction: Even though lumbar puncture (LP) represents an important tool in the diagnosis of certain neurological diseases, this procedure is little practiced by our students. We aimed to evaluate the attitudes and practices of students, interns, and residents about LP, and to assess their feelings about how this procedure is taught. Materials and Methods: We conducted a cross-sectional study of 160 participants, using an anonymous questionnaire, to evaluate the attitudes and practices of students, interns and residents in the pediatrics department concerning lumbar puncture. Results: Half of the participants had never performed LP, usually because of the risk involved or lack of confidence, while 20% had performed it more than 4 times. None of the participants had learned to perform the procedure through simulation sessions, while (42%) had learned it under the supervision of a senior physician and had not been able to perform it successfully the first time. Most participants inform the patient about the procedure before performing it. Only 44% of participants acknowledged that LP can be performed under local anesthetic. The sitting position (60%) was by far the most commonly used. Most LPs were performed for diagnostic purposes. Most participants stated that the pediatric ward and the pediatric emergency department are among the departments that perform LP most frequently, and that they would be interested in taking part in simulated lumbar puncture sessions in children in the future. Conclusion: The results of our study show that LP is perceived by students as a risky procedure that is difficult to perform. Teachers should reconsider how this technical procedure is taught, by integrating simulation on mannequins into student training.

关键词： Lumbar Puncture Learning Healthcare Simulation Stress Clinical Competency

Juvenile Xanthogranuloma: A Case Report with Literature Review

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Open Journal of Pediatrics 2024年第3期14卷 531-535页

作者： Ayad Ghanam Manal Azizi hind Zahiri Aziza El Ouali Abdeladim Babakhouya Maria Rkain Department of Pediatrics Mohammed VI University Hospital Faculty of Medicine and Pharmacy Mohammed First University Oujda Morocco

Juvenile xanthogranuloma (XGJ) is the most common form of non-Langerhansian histiocytosis. We report a pediatric case of multiple XGJ without visceral involvement in a 6-month-old female infant who was hospitalized with disseminated congenital skin nodules, of firm consistency, of variable diameter ranging from a few millimetres to 1 cm, involving the face, scalp, trunk and limbs. There was no mucosal localization. The remainder of the somatic examination was unremarkable. The diagnosis of disseminated XGJ was confirmed by skin biopsy without visceral or systemic involvement. Therapeutic abstention was recommended. This observation underlines the fact that XGJ is a rare clinical entity that should not be overlooked when faced with congenital skin nodules.

关键词： Cutaneous Nodules Juvenile Xanthogranuloma Child

Sacrococcygeal Teratoma a Rare Tumor in Children: Case Report

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Open Journal of Pediatrics 2024年第1期14卷 78-83页

作者： Hanae Bahari Hanane Hajaj hind Zahiri Ayyad Ghanam Aziza El Ouali Abdeladim Babakhouya Maria Rkain Department of Pediatrics Mohammed VI University Hospital Oujda Morocco Medical School University Mohammed First Oujda Morocco

Sacrococcygeal teratomas (SCTs) are uncommon congenital tumors that typically develop in newborns, they are rarely associated with chromosomal abnormalities or other congenital anomalies. The majority of pediatric teratomas are benign in the neonatal age group, but the risk of malignancy increases with age. Diagnosis is based on a combination of clinical, radiological, and hormonal findings, but confirmed by anatomopathological study. Treatment is primarily surgical, with the aim of achieving complete resection to prevent recurrence. We present the case of a 22-month-old child who was admitted for management of a sacrococcygeal mass and was diagnosed with an immature teratoma.

关键词： Sacrococcygeal Mass alpha-Fetoprotein Surgery

Ecthyma Gangrenosum in Patient with Bone Marrow Aplasia: A Case Report and Review of the Literature

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Open Journal of Pediatrics 2024年第2期14卷 272-278页

作者： Hanane Hajaj Hanae Bahari hind Zahiri Ayyad Ghanam Aziza El Ouali Abdeladim Babakhouya Maria Rkain Department of Pediatrics Mohammed VI University Hospital Oujda Morocco Mohammed VI University Hospital Medical School Mohammed First University Oujda Morocco

Background: Ecthyma gangrenosum (EG) is an infrequent and discernible cutaneous disease caused by Pseudomonas aeruginosa. In situations where it is associated with septicemia in debilitated patients, the prognosis is usually unfavorable. Objective: In this case, we aim to verify risk factors, clinical, bacteriological and therapeutic characteristics of ecthyma gangrenosum and we review the literature to highlight the features of this rare condition and discuss the role of early diagnosis and treatment. Case Report: We describe the clinical case of a 4-year-old male with bone marrow aplasia who was presented with characteristic skin lesions of EG and developed sepsis later. Conclusion: EG is a cutaneous disease characterized by its aggressive nature. The presence of delayed diagnosis and therapy, along with sepsis, is closely linked to a high mortality rate. Treatment is empirically founded on an aggressive initial approach.

关键词： Ecthyma Gangrenosum Child Bone Marrow Aplasia