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Experimental and Numerical Analysis of a PCM-Integrated Roof for Higher Thermal Performance of Buildings

Journal of Thermal Science 2024年第2期33卷 522-536页

作者： SIMON François RUIZ-VALERO Letzai GIRARD Aymeric GALLEGUILLOS hector Centro de Desarrollo Urbano Sustentable(CEDEUS) Pontificia Universidad Católica de Chile7500000SantiagoChile Facultad de Ciencias e Ingeniería Pontificia Universidad Católica Madre y Maestra(PUCMM)10103Santo DomingoDominican Republic LMGC IMT Mines AlesUniv MontpellierCNRS30100AlèsFrance Facultad de Ingeniería y Ciencias Universidad Adolfo Ibañez2520000Viña del MarChile Centro de Desarrollo Energético Antofagasta(CDEA) Universidad de Antofagasta1240000AntofagastaChile

Phase change materials(PCMs) designate materials able to store latent *** change state from solid to liquid over a defined temperature *** process is reversible and can be used for thermo-technical *** present paper aims to study the thermal performance of an inorganic eutectic PCM integrated into the rooftop slab of a test room and analyze its potential for building thermal *** experiment is conducted in two test rooms in Antofagasta(Chile) during summer,fall,and *** PCM is integrated into the rooftop of the first test room,while the roof panel of the second room is a sealed air *** work introduces a numerical model,which is built using the finite difference method and used to simulate the rooms' thermal *** thermal simulations of the PCM room are performed for other Chilean locations to evaluate and compare the capability of the PCM panel to store latent heat thermal energy in different *** show that the indoor temperature of the PCM room in Antofagasta varies only 21.1℃±10.6℃,while the one of the air-panel room varies 28.3℃±18.5℃.Under the experiment's conditions,the PCM room's indoor temperature observes smoother diurnal fluctuations,with lower maximum and higher minimum indoor temperatures than that of the air-panel *** simulations in other cities show that the PCM panel has a better thermal performance during winter,as it helps to maintain or increase the room temperature by some degrees to reach comfort *** demonstrates that the implementation of such PCM in the building envelope can effectively reduce space heating and cooling needs,and improve indoor thermal comfort in different climates of Chile.

关键词： phase change material thermal energy storage building space heating and cooling energy efficiency designbuilder

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Knee Arthroplasty Incidence Rate vs. Revision of Knee Arthroplasty and Its Associated Comorbidities in Colombia

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Open Journal of Orthopedics 2024年第5期14卷 247-257页

作者： Yolmira Johana Sanjuanelo Marenco Henry Oliveros Rodríguez hector Posso Schoolof Medicine Universidad de La Sabana Ch&#237a Colombia

Introduction: Total knee arthroplasty (TKA) has been established as a transformative solution in the treatment of advanced degenerative diseases of the knee, such as osteoarthritis, rheumatoid arthritis, and posttraumatic arthritis. In this sense, TKA surgery, which seeks to replace the damaged joint with prosthetic components, has proven to be highly effective in relieving pain, improving joint function, and, ultimately, significantly increasing patients’ quality of life. The present study describes the TKA and revision knee arthroplasty (RKA) rates and, identifies the associated co morbidities in the Colombian context. Methods: A retrospective cohort study was carried out. It describes demographic and clinical characteristics between two groups of patients, TKA or RKA, and its association with mortality at 30 days, 90 days, or one year after the intervention. Results: The incidence rate of the population undergoing TKA was approximately 11.71 cases per 100,000 inhabitants. Furthermore, the incidence rate for revision knee arthroplasty (RKA) procedures in the same period was around 0.96 per 100,000 inhabitants. In both groups at 30 days postoperatively, a total mortality rate of 0.09%was recorded. When the follow-up was extended to 90 days, it increased to 0.15%;at one year postoperatively, it rose to 0.88%. Conclusion: Mortality after surgery was low in Colombia in 2019. Although RKA is a beneficial procedure, in certain circumstances, it was noted that it carries a higher risk compared to primary TKA. Our results emphasize the importance of careful evaluation of co morbidities and risk factors in patients undergoing these surgical procedures. The application of quality-of-life questionnaires should be considered in future studies on effectiveness and mortality for TKA and RKA in our country.

关键词： Arthroplasty Co Morbidities Incidence Rate Pain Mortality

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Evaluation of the Efficiency of the Magicramp^® Device for Reducing Cramps Resulting from Oncological Treatments: “Double-Blind, Randomized Clinical Trial”

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Open Journal of Preventive Medicine 2024年第5期14卷 110-130页

作者： Sodré Gonçalves de Brito Neto hector Lutero Honorato de Brito Siman Geraldo Silva Queiroz Free Multidisciplinary Core of the Federal University of Goias (UFG) Goi&#226nia Brazil UNI-BH (Specializing in Molecular Biology and Statistics) Minas Gerais Brazil Araú jo Jorge Cancer Hospital ACCG Goi&#226nia Brazil

We identified that oncological treatments in general (chemotherapies, immunotherapies and radiotherapies) frequently cause peripheral neuropathy, including cramps, characterized by excess protons due to metabolic and neuronal factors, such as sudden changes in pH, uremia and aspects that affect neuromotor functions. Such situations and others like them are often neglected in treatment, which naturally concerns itself with the main problem: Cancer. Sometimes toxic solutions are implemented that have comorbid side effects, such as duloxetine (standard treatment). Based on monitoring of cancer patients who used the non-toxic product, called “Magicramp® Electrostatic Charge Reduction Cushion” (MECRC), approved in Europe more than 10 years ago, we carried out a controlled test in Brazil. In this clinical trial, we hypothesized that reducing excessive ionic charges (electrostatic charge), which is one of the side effects often described in the literature as “Chemotherapy-Induced Peripheral Neuropathy” (CIPN), would decrease or eliminate cramping, under the hypothesis that such elimination would prevent or attenuate muscular vulnerability to action impulses, and increase the power of relaxation through the same mechanism. In this double-blind and randomized clinical trial, 40 (forty) adult patients with muscle cramps caused by oncological treatments were tested, evaluating the degree of efficiency of the product that aims to reduce muscle cramps, by eliminating and/or reducing excess loads electrostatic ionic. Data from the clinical research conducted in this study are available online at https://***/10.7910/DVN/QUS94U.

关键词： Muscle Cramp Action Potentials Antineoplastic Combined Chemotherapy Protocols

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Breast Cancer in a Supernumerary Breast at the Yaoundé Gynaeco-Obstetric and Paediatric Hospital: About a Case

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Advances in Breast Cancer Research 2024年第3期13卷 43-48页

作者： Michel Auguste Mouelle Sarah Gaëlle Adiang Esther Meka Isidore Tompeen Christelle Djapa Claude hector Mbia Yann Eng Julius Sama Dohbit Zacharie Sando Oncology Department of the Yaound Gynaeco-Obstetric and Paediatric Hospital Yaound Cameroon Faculty of Medicine and Biomedical Sciences of Yaound University of Yaound I Yaound Cameroon Obstetrics and Gynaecology Department of the Yaound Gynaeco-Obstetric and Paediatric Hospital Yaound Cameroon Radiology and Medical Imaging Department of the Yaound Gynaeco-Obstetric and Paediatric Hospital Yaound Cameroon Pathology Department of the Yaound Gynaeco-Obstetric and Paediatric Hospital Yaound Cameroon

Accessory or ectopic breast tissue is an anomaly in the development of the breast. It is a rare condition that occurs along the embryological mammary line. In less than 1% of all breast cancers, supernumerary breast cancer is reported, with the axillary location being the most common in 60% to 90% of cases. Cancerous degeneration of this supernumerary breast tissue can pose a dual diagnostic and therapeutic problem. We report the case of locally advanced adenocarcinoma in a right supernumerary breast. This is a 75-year-old, grand-multiparous, postmenopausal, and known hypertensive patient on treatment. Family history was remarkable for brain cancer in her sister and oesophageal cancer in her mother. She consulted for a mass in the right axillary cavity on supernumerary breast evolving for a year. Clinical examination revealed a large, fixed, budding and haemorrhagic-ulcerated mass of the right axilla, with long axis measuring about 15 cm. There was as wella supernumerary breast on the left, but without particularity. A soft tissue ultrasound showed a large hypoechoicmass in the right axillary region of 116 mm with areas of central necrobiosis. Morphologically, the breasts were normal. A breast MRI revealed a subcutaneous mass in the right axillary cavity with skin ulceration and satellite lymphadenopathy. The extension assessment revealed liver metastases, and a biopsy of the mass revealed a breast adenocarcinoma. The case was the subject of a multidisciplinary consultation meeting following which a wide excision of the mass was indicated. The histo-pathology analysis results of the surgical specimen were in favour of a triple negative papillary adenocarcinoma. After a post-operative multidisciplinary consultation meeting, adjuvant chemotherapy was indicated. The development of supernumerary breasts depends on hormones, just like normal breasts. Breast cancer in accessory breast tissue is quite rare with the incidence being 6%. The most common pathology is invasive

关键词： Adjuvant Chemotherapy Papillary Adenocarcinoma Surgery Supernumerary Breast Treatment of Supernumerary Breast Cancer

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Predictive Factors for Pre-Eclampsia: A Case-Control Study in Two Hospitals in Yaounde

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Open Journal of Obstetrics and Gynecology 2024年第4期14卷 565-574页

作者： Junie Annick Metogo Ntsama Ines Winnie Gouanfo Claude hector Mbia Wilfried Loic Tatsipie Pascal Mpono Madye Ngo Dingom Felix Essiben Claude Cyrille Noa Ndoua Faculty of Medicine and Biomedical Sciences University of Yaound&#233 I Yaound&#233 Cameroon Faculty of Medicine and Pharmaceutical Sciences University of Dschang Dschang Cameroon

Introduction: Pre-eclampsia is a major cause of maternal and prenatal morbidity and mortality, that complicates 2% to 8% of pregnancies worldwide. The aim of this study was to determine the predictive factors for pre-eclampsia in two hospitals in the city of Yaoundé. Methods: A case-control study was conducted at the Gynaecology & Obstetrics department of the Yaoundé Gynaeco-Obstetric and Paediatric Hospital (YGOPH) and the Main Maternity of the Yaoundé Central Hospital (MM-YCH) from February 1 to July 30, 2022. The cases were all pregnant women presenting with pre-eclampsia. The control group included pregnant women without pre-eclampsia. Descriptive statistics followed by logistic regression analyses were conducted with level of significance set at p-value Results: Included in the study were 33 cases and 132 controls, giving a total of 165 participants. The predictive factors for pre-eclampsia after multivariate analysis were: primiparity (aOR = 51.86, 95% CI: 3.01 - 1230.96, p = 0.045), duration of exposure to partner’s sperm Conclusion: The odds of pre-eclampsia increased with primiparity, duration of exposure to partner’s sperm < 3 months, personal history of pre-eclampsia and maternal history of pre-eclampsia. Recognition of these predictor factors would improve the ability to diagnose and monitor women likely to develop pre-eclampsia before the onset of disease for timely interventions.

关键词： Pre-Eclampsia Predictive Factors Yaoundé

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Epidemiology, Clinical Features and Antifungal Resistance Profile of Candida auris in Africa: Systematic Review

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Journal of Biosciences and Medicines 2024年第1期12卷 126-149页

作者： Isidore Wendkièta Yerbanga Seydou Nakanabo Diallo Toussaint Rouamba Delwendé Florence Ouedraogo Katrien Lagrou Rita Oladele Jean-Pierre Gangneux Olivier Denis hector Rodriguez-Villalobos Isabel Montesinos Sanata Bamba Centre Hospitalier Universitaire Régional de Ouahigouya Ouahigouya Burkina Faso Ecole Doctorale des Sciences De la Santé Université Nazi Boni Bobo-Dioulasso Burkina Faso Centre Muraz/Institut National de Santé Publique Bobo-Dioulasso Burkina Faso Clinical Research Unit of Nanoro Institute for Research in Health Sciences National Center for Scientific and Technological Research Ouagadougou Burkina Faso Department of Microbiology Immunology and Transplantation KU Leuven Leuven Belgium and Department of Laboratory Medicine and National Reference Center for Mycosis Excellence Center for Medical Mycology (ECMM) University Hospitals Leuven Leuven Belgium College of Medicine University of Lagos Lagos Nigeria Univ Rennes CHU Rennes Inserm Irset (Institut de recherche en santé environnement et travail) European ECMM Excellence Center in Medical Mycology Université de Rennes Rennes France Department of Microbiology CHU Namur site-Godinne Université Catholique de Louvain Yvoir Belgium Ecole de Santé Publique Université Libre de Bruxelles Brussels Belgium Department of Microbiology Cliniques Universitaires Saint-Luc—Université Catholique de Louvain Bruxelles Belgium Centre Hospitalier Universitaire Sour? Sanou Bobo-Dioulasso Burkina Faso

Candida auris since it discovery in 2009 is becoming a severe threat to human health due to its very quickly spread, its worldwide high resistance to systemic antifungal drugs. In resource-constrained settings where several conditions are met for its emergence and spread, this worrisome fungus could cause large hospital and/or community-based outbreaks. This review aimed to summarize the available data on C. auris in Africa focusing on its epidemiology and antifungal resistance profile. Major databases were searched for articles on the epidemiology and antifungal resistance profile of C. auris in Africa. Out of 2,521 articles identified 22 met the inclusion criteria. In Africa, nearly 89% of African countries have no published data on C. auris. The prevalence of C. auris in Africa was 8.74%. The case fatality rate of C. auris infection in Africa was 39.46%. The main C. auris risk factors reported in Africa were cardiovascular disease, renal failure, diabetes, HIV, recent intake of antimicrobial drugs, ICU admissions, surgery, hemodialysis, parenteral nutrition and indwelling devices. Four phylogenetic clades were reported in Africa, namely clades I, II, III and IV. Candida auris showed a pan-African very high resistance rate to fluconazole, moderate resistance to amphotericin B, and high susceptibility to echinocandins. Finally, C. auris clade-specific mutations were observed within the ERG2, ERG3, ERG9, ERG11, FKS1, TAC1b and MRR1 genes in Africa. This systematic review showed the presence of C. auris in the African continent and a worrying unavailability of data on this resilient fungus in most African countries.

关键词： Africa Antifungal Resistance Candida auris Clinical Features Phylogenetic Clades

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Locomotor recovery after spinal cord injury:intimate dependence between axonal regeneration and re-connection

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Neural Regeneration Research 2022年第3期17卷 553-554页

作者： hector Ramiro Quintá Consejo Nacional de Investigaciones Científicas y Técnicas CONICET Laboratorio de Medicina Experimental“Dr.Jorge E.Toblli” Hospital AlemánBuenos AiresArgentina

Traumatic spinal cord injuries(SCI) are characterized by damage in the integrity of the spinal cord,which results in either temporary or permanent alterations in the locomotor,sensory and/or autonomic functions(Yezierski,2009).The traumatic event leads to impairments in voluntary control of movement below the injury by affecting the connection between the brain and the neurons localized in the spinal cord.

关键词： injuries alterations damage

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Panda X-III： Searching for neutrinoless double beta decay with high pressure ^(136)Xe gas time projection chambers

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Science China(Physics,Mechanics & Astronomy) 2017年第6期60卷 8-47页

作者： Xun Chen Chang Bo Fu Javier Galan Karl Giboni Franco Giuliani Ling Hui Gu Ke Han Xiang Dong Ji Heng Lin Jiang Lai Liu Kai Xiang Ni Hiroki Kusano Xiang Xiang Ren Shao Bo Wang Yong Yang Dan Zhang Tao Zhang Li Zhao Xiang Ming Sun Shou Yang Hu Si Yu Jian Xing Long Li Xiao Mei Li Hao Liang Huan Qiao Zhang Ming Rui Zhao Jing Zhou Ya Jun Mao Hao Qiao Si Guang Wang Ying Yuan Meng Wang Amir N.Khan Neill Raper Jian Tang Wei Wang Jia Ning Dong Chang Qing Feng Cheng Li Jian Bei Liu Shu Bin Liu Xiao Lian Wang Dan Yang Zhu Juan F.Castel Susana Cebri'an Theopisti Dafni Javier G.Garza Igor G.Irastorza Francisco J.Iguaz Gloria Luz ′on hector mirallas Stephan Aune Eric Berthoumieux Yann Bedfer Denis Calvet Nicole d'Hose Alain Delbart Maria Diakaki Esther Ferrer-Ribas Andrea Ferrero Fabienne Kunne Damien Neyret Thomas Papaevangelou Franck Sabatie Maxence Vanderbroucke AnDi Tan Wick Haxton Yuan Mei Chinorat Kobdaj Yu-Peng Yan NPAC and Department of Physics and Astronomy Shanghai Jiao Tong University Shanghai Laboratory for Particle Physics and Cosmology Shanghai 200240 China College of Physical Science and Technology Central China Normal University Wuhan 430079 China China Institute of Atomic Energy Beijing 102413 China School of Physics Peking University Beijing 100871 China School of Physics and Key Laboratory of Particle Physics and Particle Irradiation (MOE) Shandong University Jinan 250100 China School of Physics and Engineering Sun Yat-Sen University Guangzhou 510275 China Department of Modern Physics University of Science and Technology of China Hefei 230026 China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Hefei 230026 China University ofZaragoza C/P Cerbuna 12 50009 Zaragoza Spain IRFU CEA Universite Paris-Saclay F-91191 Gif-sur-Yvette France Department of Physics University of Maryland College Park MD 20742 USA Nuclear Science Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA Center for Excellence in High Energy Physics and Astrophysics Suranaree University of Technology Nakhon Ratchasima 30000 Thailand

Searching for the neutrinoless double beta decay(NLDBD)is now regarded as the topmost promising technique to explore the nature of neutrinos after the discovery of neutrino masses in oscillation *** X-III(particle and astrophysical xenon experiment III)will search for the NLDBD of136Xe at the China Jin Ping Underground Laboratory(CJPL).In the first phase of the experiment,a high pressure gas Time Projection Chamber(TPC)will contain 200 kg,90%136Xe enriched gas operated at10 *** pitch micro-pattern gas detector(Microbulk Micromegas)will be used at both ends of the TPC for the charge readout with a cathode in the *** signals can be used to reconstruct the electron tracks of the NLDBD events and provide good energy and spatial *** detector will be immersed in a large water tank to ensure～5 m of water shielding in all *** second phase,a ton-scale experiment,will consist of five TPCs in the same water tank,with improved energy resolution and better control over backgrounds.

关键词：中微子质量双β衰变影室时间熊猫高压力气体探测器能量分辨率

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A study of process-induced grain structures during steady state and non-steady state electron-beam welding of a titanium alloy

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Journal of Materials Science & Technology 2022年第18期113卷 117-127页

作者： Yu Lu Richard Turner Jeffery Brooks hector Basoalto School of Metallurgy and Materials University of BirminghamBirminghamB152TTUnited Kingdom Department of Materials Science and Engineering The University of SheffieldMappin StreetSheffieldS13JDUnited Kingdom

A detailed microstructural characterisation of the emerging weld-line grain structure,for bead-upon-plate welds in Ti-6Al-4V(Ti64)of differing plate thickness,was *** microstructure studied was formed during both steady state and non-steady state sections within the weld path,with the non-steady state portion being taken from the end of the plate as the weld bead and heat source overhang the edge of the *** allows for the effects of welding process conditions on the microstructural evolution to be *** weld pool geometry and 3D tomography of the weld-induced defects have been *** characterisation of microstructure and texture for different welding parameters and for steady and non-steady states have been used to identify physical parameters for the microstructure predictions that are difficult to obtain *** different states significantly affect the weld crown shape and formation,weld toe,weld bead depth and ***,the heat affected zone(HAZ)re-mains *** the microstructural evolution,both the steady and non-steady states have similar microstructure and *** defects were observed in the steady state section of welds,but sub-surface spherical pores have been observed in the non-steady state section of a *** element modelling to simulate the thermal-metallurgical-mechanical fields within the steady and non-steady state sections of the welds was considered,and the cooling rates predicted within steady state and non-steady sections were interrogated to improve the theoretical understanding of the microstructure and defect formation differences in these Ti64 EB weld regions.

关键词： Electron-beam fusion welding Processing Microstructure Ti-6Al-4V

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Maneuvering Angle Rigid Formations With Global Convergence Guarantees

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IEEE/CAA Journal of Automatica Sinica 2022年第8期9卷 1464-1475页

作者： Liangming Chen Zhiyun Lin hector Garcia de Marina Zhiyong Sun Mir Feroskhan School of Mechanical and Aerospace Engineering Nanyang Technological UniversitySingapore 639798Singapore Department of Computer Architecture and Technology and also with CITICUniversity of Granada18014 GranadaSpain Department of Electrical Engineering Eindhoven University of Technology5600 MB Eindhoventhe Netherlands

Angle rigid multi-agent formations can simultaneously undergo translational,rotational,and scaling maneuvering,therefore combining the maneuvering capabilities of both distance and bearing rigid ***,maneuvering angle rigid formations in 2D or 3D with global convergence guarantees is shown to be a challenging problem in the existing literature even when relative position measurements are *** by angle-induced linear equations in 2D triangles and 3D tetrahedra,this paper aims to solve this challenging problem in both 2D and3D under a leader-follower *** the 2D case where the leaders have constant velocities,by using local relative position and velocity measurements,a formation maneuvering law is designed for the followers governed by double-integrator *** the leaders have time-varying velocities,a sliding mode formation maneuvering law is proposed by using the same *** the 3D case,to establish an angle-induced linear equation for each tetrahedron,we assume that all the followers'coordinate frames share a common Z ***,a formation maneuvering law is proposed for the followers to globally maneuver Z-weakly angle rigid formations in *** extension to Lagrangian agent dynamics and the construction of the desired rigid formations by using the minimum number of angle constraints are also *** examples are provided to validate the effectiveness of the proposed algorithms.

关键词： Index Terms—Angle rigid formations formation control formation maneuvering global convergence multi-agent systems

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