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JOURNAL ARTICLE
Naomi Kouri, Isabelle Frankenhauser, Zhongwei Peng, Sydney A Labuzan, Baayla D C Boon, Christina M Moloney, Cyril Pottier, Daniel P Wickland, Kelsey Caetano-Anolles, Nick Corriveau-Lecavalier, Jessica F Tranovich, Ashley C Wood, Kelly M Hinkle, Sarah J Lincoln, A J Spychalla, Matthew L Senjem, Scott A Przybelski, Erica Engelberg-Cook, Christopher G Schwarz, Rain S Kwan, Elizabeth R Lesser, Julia E Crook, Rickey E Carter, Owen A Ross, Christian Lachner, Nilüfer Ertekin-Taner, Tanis J Ferman, Julie A Fields, Mary M Machulda, Vijay K Ramanan, Aivi T Nguyen, R Ross Reichard, David T Jones, Jonathan Graff-Radford, Bradley F Boeve, David S Knopman, Ronald C Petersen, Clifford R Jack, Kejal Kantarci, Gregory S Day, Ranjan Duara, Neill R Graff-Radford, Dennis W Dickson, Val J Lowe, Prashanthi Vemuri, Melissa E Murray
IMPORTANCE: Factors associated with clinical heterogeneity in Alzheimer disease (AD) lay along a continuum hypothesized to associate with tangle distribution and are relevant for understanding glial activation considerations in therapeutic advancement. OBJECTIVES: To examine clinicopathologic and neuroimaging characteristics of disease heterogeneity in AD along a quantitative continuum using the corticolimbic index (CLix) to account for individuality of spatially distributed tangles found at autopsy...
April 15, 2024: JAMA Neurology
#22
JOURNAL ARTICLE
Muddada Srinivasarao, Bok Jik Lee, Vanteru Mahendra Reddy
The present study investigates the applicability of the inlet boundary species Lewis number (combined effect of molecular and flow diffusion) for the nonpremixed moderate and intense low oxygen dilution (MILD) flames. A modified reactive solver named modifiedReactingFoam is developed by including the enthalpy flux in the energy equation and using modified model constants in OpenFOAM. The present solver is tested on the delft-jet-in-hot-coflow burner operating under a moderate and intense low oxygen dilution combustion environment...
April 9, 2024: ACS Omega
#23
JOURNAL ARTICLE
Xinwei Guo, Jingqi Bai, Jun Liu, Yaoyi Tang, Jisheng Long, Li Bai, Haowen Yan, Weishu Wang, Meng Wen
The efficient and clean utilization of urban waste can substitute for partial fossil fuels and reduce total carbon emissions. Fuel combustion is divided into three stages. Before the fire, the fuel is put into the furnace to reach the preparation stage of the fire temperature, the combustion stage takes place after the ignition temperature is reached, and finally, the combustion is completed. This article employs numerical simulation methods to comprehensively study the effects of various factors on the combustion characteristics of waste in a mechanical grate incinerator, including the inclination angle of the front arch, fuel properties, height of the front and rear arches, air distribution methods, and speed of the grate chain rotation...
April 9, 2024: ACS Omega
#24
JOURNAL ARTICLE
Guo Xun Jing, Yue Sun, Shao Shuai Guo
In order to explore the pressure and flame propagation characteristics of gas-coal dust composite explosions, a semiclosed pipeline explosion test platform was built. The shock wave overpressure and explosion flame propagation law of different concentrations of suspended coal dust participating in gas explosions were studied in depth through experiments, and the coal dust motion law was simulated and analyzed based on Fluent software. The experimental results show that the peak pressure of gas-coal dust composite explosion is significantly higher than that of single-phase gas explosion, and the pressure peak increase ratio at the pipeline outlet is the highest; as the suspended coal dust concentration increases, the pressure rise rate at point 3 gradually decreases...
April 9, 2024: ACS Omega
#25
Rosemaria Serradimigni, Alfredo Rojas, Connor Leong, Uttam Pal, Madeline Bryan, Sunil Sharma, Subham Dasgupta
3,3',5.5'-Tetrabromobisphenol A (TBBPA) is a widely used brominated flame-retardant utilized in the production of electronic devices and plastic paints. The objective of this study is to use zebrafish as a model and determine the effects of TBBPA exposure on early embryogenesis. We initiated TBBPA exposures (0, 10, 20 and 40μM) at 0.75 h post fertilization (hpf) and monitored early developmental events such as cleavage, blastula and epiboly that encompass maternal-to-zygotic transition (MZT) and zygotic genome activation (ZGA)...
April 1, 2024: bioRxiv
#26
JOURNAL ARTICLE
Valérie Jolicoeur, Magali Houde, Lisa Loseto, Robert Michaud, Jonathan Verreault
The St. Lawrence Estuary (SLE) beluga (Delphinapterus leucas) population is highly exposed to an array of contaminants that were identified as one of the causes to the non-recovery of this endangered and declining population. In the last decade, an increasing number of parturition-associated complications and calf mortality has been reported in this population. It was suggested that elevated exposure to organohalogens (e.g., the halogenated flame retardants polybrominated diphenyl ethers [PBDEs]) and stress could play a role in this phenomenon by perturbing thyroid hormones...
April 9, 2024: Environment International
#27
JOURNAL ARTICLE
Sinan Karaboga, Florence Severac, Eva-Maria S Collins, Aurélien Stab, Audrey Davis, Michel Souchet, Grégoire Hervé
Organophosphorus compounds or organophosphates (OPs) are widely used as flame retardants, plasticizers, lubricants and pesticides. This contributes to their ubiquitous presence in the environment and to the risk of human exposure. The persistence of OPs and their bioaccumulative characteristics raise serious concerns regarding environmental and human health impacts. To address the need for safer OPs, this study uses a New Approach Method (NAM) to analyze the neurotoxicity pattern of 42 OPs. The NAM consists of a 4-step process that combines computational modeling with in vitro and in vivo experimental studies...
April 8, 2024: Journal of Hazardous Materials
#28
JOURNAL ARTICLE
Xindong Yu, Pengtu Zhang, Heng Zhang, Shiling Yuan
The combination of Al nanoparticles (ANPs) as fuel and H2 O2 as oxidizer is a potential green space propellant. In this research, reactive force field molecular dynamics (ReaxFF-MD) simulations were used to study the influence of water addition on the combustion of Al/H2 O2 . The MD results showed that as the percentage of H2 O increased from 0 to 30%, the number of Al-O bonds on the ANPs decreased, the number of Al-H bonds increased, and the adiabatic flame temperature of the system decreased from 4612 K to 4380 K...
March 31, 2024: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
#29
JOURNAL ARTICLE
Vladimir Morocho, Ángel Benitez, Bárbara Carrión, Luis Cartuche
Our research focuses on exploring the chemical composition and some biological properties of the essential oil derived from Syzygiella rubricaulis (Nees) Stephani, a bryophyte species. To conduct a comprehensive analysis, we utilized a DB5MS capillary column along with gas chromatography coupled to mass spectrometry (GC-MS) and flame ionization (GC-FID). The qualitative and quantitative examination revealed the presence of 50 compounds, with hydrocarbon sesquiterpenes (48.35%) and oxygenated sesquiterpenes (46...
March 23, 2024: Plants (Basel, Switzerland)
#30
JOURNAL ARTICLE
Yi Yu, Junlei Chen, Anxin Ding, Changzeng Wang, Yunfei Wang, Ling Yang
To meet the environmental protection and flame retardancy requirements for epoxy resins (EPs) in certain fields, in this study, a novel triazine-ring-containing DOPO-derived compound (VDPD), derived from vanillin, 2,4-Diamino-6-phenyl-1,3,5-triazine, and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), was synthesized using a one-pot method. Flame-retardant epoxy resin (FREP) was prepared by adding various ratios of VDPD to EP and curing with 4,4-diaminodiphenylmethane (DDM). The curing behavior, thermal stability, mechanical properties, and flame-retardant properties of the FREP were examined in various tests...
March 22, 2024: Polymers
#31
JOURNAL ARTICLE
Gang Liu, Xinli Xu, Longda Wang
During the process of reverse parking, it is difficult to achieve the ideal reference trajectory while avoiding collision. In this study, with the aim of establishing reference trajectory optimization for automatic reverse parking that smooths and shortens the trajectory length and ensures the berthing inclination angle is small enough, an improved immune moth-flame optimization method based on gene correction is proposed. Specifically, based on the standard automatic parking plane system, a reasonable high-quality reference trajectory optimization model for automatic parking is constructed by combining the cubic spline-fitting method and a boundary-crossing solution based on gene correction integrated into moth-flame optimization...
April 2, 2024: Sensors
#32
JOURNAL ARTICLE
Xiaoliu Shi, Wanyue Wang, Jiafan Feng, Xiaochun Ma, Mengting Xu, Cui Wang
The worldwide prevalence of obesity highlights the potential contribution of endocrine-disrupting chemicals (EDCs). However, common epidemiological measures such as body mass index and waist circumference may misrepresent the intricate obesity risks these chemicals pose across genders. This study delves deeper into abdominal fat by differentiating between subcutaneous and visceral regions by analyzing data from National Health and Nutrition Examination Surveys (NHANES). We particularly investigated the gender-specific associations between organophosphorus flame-retardant metabolites (mOPFRs), phthalates (mPAEs) and accumulated fat indexes from 2536 people...
April 10, 2024: Environmental Pollution
#33
JOURNAL ARTICLE
Impact of surface delignification on fire retardancy of wood treated with polyelectrolyte complexes.
Marie Soula, Fabienne Samyn, Sophie Duquesne, Véronic Landry
Wood is a natural composite widely employed as a residential building interior finishing. Although wood is readily available and offers benefits to the occupants, such as enhanced well-being, it is rarely employed in commercial construction due, amongst others, to the potential hazard of fire propagation. The application of flame retardant (FR) treatments leads to a reduction of wood flammability and supports wood as interior finishing. Polyelectrolyte complexes (PECs) deposition is an innovative surface treatment that has already proven its efficiency for fabrics...
April 2024: Holzforschung
#34
JOURNAL ARTICLE
G Castro, M Cobo, I Rodríguez
End-of-life electric and electronic devices stand as one of the fastest growing wastes in the world and, therefore, a rapidly escalating global concern. A relevant fraction of these wastes corresponds to polymeric materials containing a plethora of chemical additives. Some of those additives fall within the category of hazardous organic compounds (HOCs). Despite the significant advances in the capabilities of analytical methods, the comprehensive characterization of WEEE plastic remains as a challenge. This research strives to identify the primary additives within WEEE polymers by implementing a non-target and suspect screening approach...
April 9, 2024: Chemosphere
#35
JOURNAL ARTICLE
Yolanda Soriano, Eugenia Gimeno-García, Julián Campo, Carmen Hernández-Crespo, Vicente Andreu, Yolanda Picó
Sedimentary records help chronologically identify anthropogenic contamination in environmental systems. This study analysed dated sediment cores from L'Albufera Lake (Valencia, Spain), to assess the occurrence of heavy metals (HMs), polycyclic aromatic hydrocarbons (PAHs), perfluoroalkyl substances (PFASs), organophosphorus flame retardants (OPFRs), pesticides and pharmaceuticals and personal care products (PPCPs). The results evidence the continuing vertical presence of all types of contaminants in this location...
April 7, 2024: Journal of Hazardous Materials
#36
JOURNAL ARTICLE
Xiaotong Wang, Andrea Rowan-Carroll, Matthew J Meier, Carole L Yauk, Michael G Wade, Bernard Robaire, Barbara F Hales
Organophosphate esters (OPEs), used as flame retardants and plasticizers, are present ubiquitously in the environment. Previous studies suggest that exposure to OPEs is detrimental to female fertility in humans. However, no experimental information is available on the effects of OPE mixtures on ovarian granulosa cells, which play essential roles in female reproduction. We used high-content imaging to investigate the effects of environmentally relevant OPE mixtures on KGN human granulosa cell phenotypes. Perturbations to steroidogenesis were assessed using ELISA and qRT-PCR...
April 11, 2024: Toxicological Sciences: An Official Journal of the Society of Toxicology
#37
JOURNAL ARTICLE
Liu Yang, Yisha Wang, Jingwen Wang, Yapeng Zheng, Edison Huixiang Ang, Yuan Hu, Jixin Zhu
Lithium-ion batteries have found extensive applications due to their high energy density and low self-discharge rates, spanning from compact consumer electronics to large-scale energy storage facilities. Despite their widespread use, challenges such as inherent capacity degradation and the potential for thermal runaway hinder sustainable development. In this study, we introduce a unique approach to synthesize anode materials for lithium-ion batteries, specifically imidazole-intercalated cobalt hydroxide. This innovative material significantly enhances the Li+ desolvation/diffusion reaction and flame-retardant dynamics through complexing and catalytic synergetic effects...
April 11, 2024: Angewandte Chemie
#38
JOURNAL ARTICLE
Likang Fan, Xin Fu, Mingjie Hu, Yan Yan, Zinong Zuo, Zhiqiang Han, Jia Fang, Bang Xiao
Ignition electrodes have an immense impact on the accurate measurement of the flame propagation spherical radius. In this study, a flame-radius calculation method is designed. The method is able to eliminate effects due to the ignition electrodes. The adaptability and optimization effects of the proposed method are analyzed. The results show that the ratio of the angle is affected by the ignition electrodes under the Han II method. There are three obvious divisions include a high-value area, a sharp-variation area, and a mild-variation area...
April 10, 2024: Scientific Reports
#39
JOURNAL ARTICLE
Thaylan Pinheiro Araújo, Georgios Giannakakis, Jordi Morales-Vidal, Mikhail Agrachev, Zaira Ruiz-Bernal, Phil Preikschas, Tangsheng Zou, Frank Krumeich, Patrik O Willi, Wendelin J Stark, Robert N Grass, Gunnar Jeschke, Sharon Mitchell, Núria López, Javier Pérez-Ramírez
Metal promotion could unlock high performance in zinc-zirconium catalysts, ZnZrOx , for CO2 hydrogenation to methanol. Still, with most efforts devoted to costly palladium, the optimal metal choice and necessary atomic-level architecture remain unclear. Herein, we investigate the promotion of ZnZrOx catalysts with small amounts (0.5 mol%) of diverse hydrogenation metals (Re, Co, Au, Ni, Rh, Ag, Ir, Ru, Pt, Pd, and Cu) prepared via a standardized flame spray pyrolysis approach. Cu emerges as the most effective promoter, doubling methanol productivity...
April 10, 2024: Nature Communications
#40
REVIEW
Emmanuel Sunday Okeke, Timothy Prince Chidike Ezeorba, Yao Chen, Guanghua Mao, Weiwei Feng, Xiangyang Wu
Despite the diverse research into the environmental impact of plastics, several stones have yet to be unraveled in terms of their ecotoxicological potential. Moreover, their detrimental impacts have become terrifying in recent years as the understanding of their tendency to associate and form cohorts with other emerging contaminants grew. Despite the hypothesis that microplastics may potentially adsorb organic pollutants, sequestering and making them not bioavailable for enhanced toxicity, evidence with pollutants such as Tetrabromobisphenol A (TBBPA) defers this assertion...
April 8, 2024: Science of the Total Environment
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