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Composite Panels from the Combination of Rice Husk and Wood Chips with a Natural Resin Based on Tannins Reinforced with Sugar Cane Molasses Intended for Building Insulation: Physico-Mechanical and Thermal Properties

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Journal of Materials Science and Chemical Engineering 2024年第2期12卷 19-30页

作者： Paul Nestor Djomou Djonga Rosellyne Serewane Deramne Gustave Assoualaye Ahmat tom Tégawendé Justin Zaida Department of Textile and Leather Engineering National Advanced School of Engineering of Maroua University of Maroua Maroua Cameroon Department of Chemistry Faculty of Science University of Bangui Bangui Central African Republic Department of Renewable Energy National Advanced School of Engineering of Maroua University of Maroua Maroua Cameroon Department of Energy Engineering University Institute of Technology University of Ngaoundere Ngaoundere Cameroon Institute of Industrial and Textile Systems Engineering Ecole Polytechnique de Ouagadougou Ouagadougou Burkina Faso

The objective of this work is to develop new biosourced insulating composites from rice husks and wood chips that can be used in the building sector. It appears from the properties of the precursors that rice chips and husks are materials which can have good thermal conductivity and therefore the combination of these precursors could make it possible to obtain panels with good insulating properties. With regard to environmental and climatic constraints, the composite panels formulated at various rates were tested and the physico-mechanical and thermal properties showed that it was essential to add a crosslinker in order to increase certain solicitation. an incorporation rate of 12% to 30% made it possible to obtain panels with low thermal conductivity, a low surface water absorption capacity and which gives the composite good thermal insulation and will find many applications in the construction and real estate sector. Finally, new solutions to improve the fire reaction of the insulation panels are tested which allows to identify suitable solutions for the developed composites. In view of the flame tests, the panels obtained are good and can effectively combat fire safety in public buildings.

关键词： Composite Panels Tannins Reinforced Sugar Cane Molasses Building Insulation Mechanical and Thermal Properties

Biomass gasification,catalytic technologies and energy integration for production of circular methanol:New horizons for industry decarbonisation

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Journal of Environmental Sciences 2024年第6期140卷 306-318页

作者： Luis F.Bobadilla Lola Azancot Miriam González-Castañ Estela Ruíz-López Laura Pastor-Pérez Francisco J.Durán-Olivencia Runping Ye Katie Chong Paula HBlanco-Sánchez Zenthao Wu tomás R.Reina JoséA.Odriozola Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla Centro Mixto CSIC-Universidad de SevillaAvda.Américo Vespucio 49Sevilla 41092Spain Departamento de Ingeniería Universidad Loyola AndalucíaAvda.de Las Universidades s/nSevilla 41704Spain Key Laboratory of Jiangxi Province for Environment and Energy Catalysis School of Chemistry and Chemical EngineeringNanchang UniversityNanchang330031China Energy and Bioproducts Research Institute(EBRI) Aston UniversityBirminghamB47ETUnited Kingdom Department of Chemical and Process Engineering University of SurreyGuildfordGU27XHUnited Kingdom

The Intergovernmental Panel on Climate Change(IPCC)recognises the pivotal role of renewable energies in the future energy system and the achievement of the zero-emission *** implementation of renewables should provide major opportunities and enable a more secure and decentralised energy supply *** fuels provide long-term solutions for the transport sector,particularly for applications where fuels with high energy density are *** addition,it helps reducing the carbon footprint of these sectors in the *** on biomass characteristics feedstock is essential for scaling-up gasification from the laboratory to *** review deals with the transformation biogenic residues into a valuable bioenergy carrier like biomethanol as the liquid sunshine based on the combination of modified mature technologies such as gasification with other innovative solutions such as membranes and microchannel *** abatement is a critical process in product gas upgrading since tars compromise downstream processes and equipment,for this,membrane technology for upgrading syngas quality is discussed in this *** reactor technology with the design of state-of-the-art multifunctional catalysts provides a path to develop decentralised biomethanol synthesis from biogenic ***,the development of a process chain for the production of(i)methanol as an intermediate energy carrier,(ii)electricity and(iii)heat for decentralised applications based on biomass feedstock flexible gasification,gas upgrading and methanol synthesis is analysed.

关键词： Biogenic residues Gasification Biomethanol Circular Economy Microreactors

SAF等可持续发展措施将为MRO带来新挑战

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航空维修与工程 2024年第4期 16-19页

作者： tom Pleasant 赵平(译) 不详

在2022年ICAO提出“国际航空长期全球理想目标”的背景下,各国政府及航空企业都公开承诺实现碳排放要求,其中可持续航空燃料(SAF)或氢能源等更是被视为减少碳排放的捷径,同时也希望位于行业下游的MRO供应商也能做出类似的承诺。对此,MR... 详细信息

在2022年ICAO提出“国际航空长期全球理想目标”的背景下,各国政府及航空企业都公开承诺实现碳排放要求,其中可持续航空燃料(SAF)或氢能源等更是被视为减少碳排放的捷径,同时也希望位于行业下游的MRO供应商也能做出类似的承诺。对此,MRO行业企业对此看法不一。但目前来看,SAF的广泛使用是能够实现航空可持续的,但同时也将为MRO企业带来很多挑战,包括设施、投资、人员培训等。

关键词：国际航空航空燃料氢能源 MRO 碳排放供应商 SAF 人员培训

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通胀噩梦将完结是时候总结教训了

商业周刊（中文版） 2024年第12期 26-28页

作者： tom Orlik 晴川(译) 不详

新冠疫情引|发的通胀说明之前央行的作用被夸大了设想一下,假如你发现,多年来一直帮你维修保养车子的机修工其实只对发动机原理一知半解。你原本以为他们工作做得特别好。实际上,他们只是运气特别好。当第一次出了大问题时,他们根本不... 详细信息

新冠疫情引|发的通胀说明之前央行的作用被夸大了设想一下,假如你发现,多年来一直帮你维修保养车子的机修工其实只对发动机原理一知半解。你原本以为他们工作做得特别好。实际上,他们只是运气特别好。当第一次出了大问题时,他们根本不知所措。你只好打车去上班,路上还在考虑,二手车价格有没有降下来。

关键词：机修工通胀发动机原理维修保养总结教训央行打车

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“漫”读习语

英语角 2024年第20期 46-47页

作者： tom 欣巴达(画) 不详

小朋友们,你们知道吗?英语当中有很多习语,它们真正的含义可能和字面意思不同哦。读一读下面这个小故Cartoons事,一起来学习一下"take pot luck"的意思吧。

关键词：习语字面意思 take

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“漫”读习语

英语角 2024年第11期 36-37页

作者： tom 欣巴达(画稿) 不详

小朋友们,你们知道吗?英语当中有很多习语,它们真正的含义可能和字面意思不同哦。读一读下面这个小故事,-起来学习一下“cat's out the bag”的意思吧。

关键词：习语字面意思英语含义

Predicting major adverse cardiovascular events after orthotopic liver transplantation using a supervised machine learning model:A cohort study

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World Journal of Hepatology 2024年第2期16卷 193-210页

作者： Jonathan Soldera Leandro Luis Corso Matheus Machado Rech Vinícius Remus Ballotin Lucas Goldmann Bigarella Fernanda tomé Nathalia Moraes Rafael Sartori Balbinot Santiago Rodriguez Ajacio Bandeira de Mello Brandão Bruno Hochhegger Post Graduate Program at Acute Medicine and Gastroenterology University of South WalesCardiff CF371DLUnited Kingdom Postgraduate Program in Pathology Federal University of Health Sciences of Porto Alegre(UFCSPA)Porto Alegre 90050-170Brazil Department of Engineering Universidade de Caxias do SulCaxias do Sul 95070-560Brazil School of Medicine Universidade de Caxias do SulCaxias do Sul 95070-560Brazil Postgraduate Program in Hepatology Federal University of Health Sciences of Porto Alegre(UFCSPA)Porto Alegre 90050-170Brazil

BACKGROUND Liver transplant(LT)patients have become older and *** rate of post-LT major adverse cardiovascular events(MACE)has increased,and this in turn raises 30-d post-LT *** cardiac stress testing loses accuracy when applied to pre-LT cirrhotic *** To assess the feasibility and accuracy of a machine learning model used to predict post-LT MACE in a regional *** This retrospective cohort study involved 575 LT patients from a Southern Brazilian academic *** developed a predictive model for post-LT MACE(defined as a composite outcome of stroke,new-onset heart failure,severe arrhythmia,and myocardial infarction)using the extreme gradient boosting(XGBoost)machine learning *** addressed missing data(below 20%)for relevant variables using the k-nearest neighbor imputation method,calculating the mean from the ten nearest neighbors for each *** modeling dataset included 83 features,encompassing patient and laboratory data,cirrhosis complications,and pre-LT cardiac *** performance was assessed using the area under the receiver operating characteristic curve(AUROC).We also employed Shapley additive explanations(SHAP)to interpret feature *** dataset was split into training(75%)and testing(25%)*** was evaluated using the Brier *** followed Transparent Reporting of a Multivariable Prediction Model for Individual Prognosis or Diagnosis guidelines for ***-learn and SHAP in Python 3 were used for all *** supplementary material includes code for model development and a user-friendly online MACE prediction *** Of the 537 included patients,23(4.46%)developed in-hospital MACE,with a mean age at transplantation of 52.9 *** majority,66.1%,were *** XGBoost model achieved an impressive AUROC of 0.89 during the training *** model exhibited accuracy,precision,recall,and F1-score values of 0.84,0.85,0.80,and 0.79,***

关键词： Liver transplantation Major adverse cardiac events Machine learning Myocardial perfusion imaging Stress test