Results 91 to 100 of about 6,607 (254)

Phosphorylation of Milkweed Fibers With a Phosphate Ester: Effect on Fiber Properties and Optimization of Reaction Conditions

Journal of Applied Polymer Science, EarlyView.
The phosphorylation of milkweed fibers using the phosphate ester/urea system was optimized. The impact of reaction temperature, duration, and phosphate ester ratio on the efficiency of phosphorylation was investigated using the design of experiments approach.
Ahmed Azrrar, François Brouillette, Zahahe Oulame Mouandhoime, Saïd Elkoun, Mathieu Robert   +4 more
wiley   +1 more source

Operationalizing BioSSbD: A safe‐and‐sustainable‐by‐design framework for biorefineries

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Biorefineries are central to the transition toward a circular bioeconomy; however, their increasing scale and technological heterogeneity, and the integration of biological, chemical, and thermochemical processes introduce complex challenges related to safety, sustainability, and operational reliability. Existing Safe‐and‐Sustainable‐by‐Design
Fernando Ramonet
wiley   +1 more source

Quercetin‐zinc coordination polymer coated CaCO3 nanoparticles potentiate radiotherapy through reprogramming tumor immunosuppression

BMEMat, EarlyView.
Synthesis of QZCaCO3‐PEG to synergistically enhance the immunogenicity of radiotherapy through concurrent Zn2+‐induced cancer cell pyroptosis and Que‐mediated hypoxia amelioration through sequentially suppressing TGF‐β secretion and ECM deposition. Abstract Radiotherapy has demonstrated broad applications in treating solid tumors, but the hostile tumor
Chunjie Wang, Hengze Ding, Yu Hao, Honglin An, Ziliang Dong, Minming Chen, Yujie Zhu, Quguang Li, Bin Huang, Liangzhu Feng   +9 more
wiley   +1 more source

Pathways to Carbon Neutrality: The Role of Environmental Governance, Environmental Technology, Renewable Energy Transition, and Economic Policy Uncertainty in Africa

Business Strategy and the Environment, EarlyView.
ABSTRACT As climate change and environmental deterioration continue to escalate due to substantial CO2 emissions, nations worldwide are implementing approaches to alleviate CO2 emissions and accomplish carbon neutrality (CNE) goals. The current study examined CNE objectives for five selected nations in Africa, spanning from 1990 to 2022.
John Wiredu, Emmanuel Nketiah, Simplice A. Asongu, Kingsley Takyi Agyei, Zijie Fan   +4 more
wiley   +1 more source

Durable Fuel Cell Cathode Enabled by Pt Embedded Nanoscale Carbon Network via a Scalable Process

Carbon Energy, EarlyView.
Platinum nanoparticles embedded nanoscale carbon network (Pt‐e‐Cn) are developed via a scalable flame spray pyrolysis process. Proton exchange membrane fuel cells (PEMFC) employing mesoporous Pt‐e‐Cn cathode electrocatalysts exhibit exceptional durability without compromising performance.
Suriya Venkatesan, Jens Mitzel, Tobias Morawietz, Emmanuelle Boehm‐Courjault, Deven P. Estes, Laure Guétaz, Indro Biswas, Jan Van Herle, Karsten Wegner, Pawel Gazdzicki, Kaspar Andreas Friedrich   +10 more
wiley   +1 more source

Minimum ignition temperature: an alternative small-scale flammability test for conveyor belting

, 1991
Minimum ignition temperature (MIT) tests were carried out on 10 different conveyor beltings to determine if this test is useful for assessing the fire-resistance of belting. In all but one case, two different MIT values were obtained for each product: a lower one, in which an exothermic reaction was observed, designated MITnon-fl and a higher one, in ...
K J Mintz, K V Inglis
openaire   +1 more source

Influence of Particle Size, Moisture, and Cloud Density on Wood Dust Ignition

Chemie Ingenieur Technik, EarlyView.
The ignition and combustion of particle clouds are strongly affected by particle interactions. This study uses spectroscopy to examine effects of particle size, water content, and cloud density. Results show ignition delay rises with larger size and density, whereas combustion duration depends mainly on water and density due to moisture‐driven ...
Matteo Giesen, Daniel Bernhardt, Michael Beckmann   +2 more
wiley   +1 more source

Thermal Degradation of PFAS in Different Scales: Measurement of Hydrogen Fluoride (HF)

Chemie Ingenieur Technik, EarlyView.
The communication article is about the challenges to balance a combustor in the case of fluorine when incinerating PFAS containing materials. Several analytical methods are compared: for continuous measurement, FTIR with TDLS. The detected fluorine species are further compared with results upon IC and pyrohydrolysis for discontinuous measurements in ...
Hans‐Joachim Gehrmann, Vanessa Nuredin, Krasimir Aleksandrov, Steffen Tonndorf, Manuela Hauser, Björn Meermann, Dieter Stapf   +6 more
wiley   +1 more source

Box–Behnken optimization and ANN‐ANFIS integrated modelling for transesterification using thermally activated basic oxygen furnace slag catalyst

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Global energy demand and environmental concerns have intensified the search for renewable and sustainable energy sources. This study thus, focuses on optimizing the transesterification process of waste cooking oil (WCO) using thermally activated basic oxygen furnace slag catalyst calcined at 850°C (BOF 850). The optimization and modelling were
Johra S. Ali, Hillary L. Rutto
wiley   +1 more source

Investigation into the ignition sensitivity and detonation kinetics of Al/RDX energetic dust

Case Studies in Thermal Engineering
Given the prevalence of Al/RDX energetic dust in industrial production, this study investigates their ignition safety and explosion hazards using Hartmann tubes and 20 L spherical explosion containers.
Yu Xia, Yi-min Luo, Jun-hong Wang, Teng Ma, Sen-sen An, Sen Xu, Xing-liang Wu   +6 more
doaj   +1 more source