Article
Polymer Science
Nikolay A. Belov, Aleksandr Yu Alentiev, Roman Yu Nikiforov, Sergei V. Chirkov, Denis A. Bezgin, Daria A. Syrtsova, Victoria E. Ryzhikh, Igor I. Ponomarev
Summary: The gas transport properties of PIM-1 films treated with elemental fluorine in a liquid perfluorodecalin were investigated. The investigation included analyzing the fluorine content in the fluorinated layer, measuring permeability, diffusion and solubility coefficients, assessing ideal selectivity, and observing the effect of fluorination time on gas transport properties. The results showed that an increase in treatment duration led to higher fluorine concentration and depth of fluorination in the layer. The drop in gas permeability depended on the kinetic size of the gas molecules, and the decrease was more significant in the gas-phase regime compared to the liquid-phase regime. The fluorinated PIM-1 samples exhibited excellent gas separation characteristics, surpassing the Robeson upper bounds for various gas pairs. Mixed gas experiments also showed promising results for recovering helium from natural gas and hydrogen from catalytic and biohydrogen production mixtures. Aging of the fluorinated PIM-1 sample resulted in a decline in permeability and a slight decrease in ideal selectivity.
Article
Nanoscience & Nanotechnology
Robert R. Tuttle, Ryann E. Daly, Christopher D. Rithner, Melissa M. Reynolds
Summary: A method to quantitatively monitor a metal-organic framework (MOF)-catalyzed reaction directly in blood plasma was established, showing that blood plasma can scavenge the generated NO preventing its escape from the reaction vessel.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Yu-Zhang Bi, Jia-Ming Wen, Hao-Liang Wu, Yan-Jun Du
Summary: This study experimentally explored the performance of gas barrier materials consisting of polyacrylamide-modified compacted clayey soil. The moisture content, gas permeability, and gas diffusion coefficient were evaluated to assess the water retention capacity and gas barrier properties. The results showed that increasing polyacrylamide content increased moisture content but decreased gas permeability and diffusion coefficient. The liquid limit of the modified clay was also higher compared to unmodified clay, especially for zwitterionic polyacrylamide modification.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Geological
S. Feng, J. X. Sun, L. T. Zhan, H. W. Liu
Summary: A new method and instrument were developed to measure the gas diffusion coefficient (Dg) and gas coefficient of permeability (kg) of unsaturated soil in situ. The measurements were validated through soil column tests and field tests. The in situ measured Dg and kg were comparable to those measured by a two-chamber apparatus. The results showed that the measurement accuracy increased at deeper depth due to reduced boundary effect at the soil surface. The in situ measurement of Dg was more influenced by the boundary effects than that of kg at shallower depth (20 cm deep) in general. The field tests revealed the heterogeneity of soil, resulting in varied ratios of in situ Dg (or kg) to the measurements from element tests.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2023)
Article
Construction & Building Technology
Zirui Cheng, Jihui Zhao, Linyong Cui
Summary: The study found that ferroaluminate cement has a relatively fast hydration rate and higher early age compressive strength compared to ordinary Portland cement. The gas permeability and chloride diffusion coefficient of ferroaluminate cement mortar samples are approximately 3-4 times lower than that of ordinary Portland cement mortar samples, and both decrease significantly as water-to-cement decreases.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Plant Sciences
Zebus Sehar, Iqbal R. Mir, Sheen Khan, Asim Masood, Nafees A. Khan
Summary: The study investigated the effects of exogenous NO and proline on the protection of wheat plants from heat stress. Heat-stressed plants showed increased oxidative stress and proline accumulation, as well as elevated levels of ethylene and NO generation. The application of SNP and proline improved photosynthesis and reduced oxidative stress in heat-stressed plants by enhancing the antioxidant defense system.
Article
Engineering, Environmental
Jun Zhou, Zhangwei Wang, Xiaoshan Zhang, Charles T. Driscoll
Summary: This study investigated the gaseous elemental mercury (Hg(0)) in soil profiles of subtropical and temperate forest plots, finding variations in Hg(0) concentrations between different forest types. The findings suggest that temperature and the ratio of Hg to organic matter in soil play important roles in Hg(0) production, providing a foundation for the development of terrestrial Hg models in the future.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Physics, Fluids & Plasmas
V Laporta, L. Vialetto, V Guerra
Summary: A full set of vibrationally-resolved cross sections for electron impact excitation of NO(X-2 pi, v) molecules is calculated, and the electron-vibration energy exchanges in non-equilibrium thermodynamic conditions are studied. The calculated vibration relaxation times are in good agreement with the experimental data. The new vibrational excitation cross sections play an important role in obtaining non-equilibrium electron energy distributions functions and calculating electron transport parameters in NO.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Chemical
Ziheng Jiang, Guogang Yang, Qiuwan Shen, Shian Li, Jiadong Liao, Hao Wang, Zhonghua Sheng, Ruomeng Ying, Zheng Li, Guoling Zhang, Hongpeng Zhang
Summary: Gas diffusion layer (GDL) plays a vital role in proton exchange membrane fuel cells (PEMFC) and altering its structure can enhance the cell's performance. The gas transport performance was computationally studied by simulating perforated GDL structures with different perforation diameters and depths. The results showed that the perforated structure significantly improved gas transport performance.
TRANSPORT IN POROUS MEDIA
(2022)
Article
Construction & Building Technology
Jianhe Xie, Junjie Wang, Molan Li, Lei Xu, Dong Xiang, Yuli Wang, Hang He, Yi Zhu, Jinxia Zhao
Summary: This study establishes a theoretical model between water permeability coefficient and chloride diffusion coefficient in concrete and validates the model with experimental work. The model provides an accurate relationship between these two parameters, allowing engineers to predict the chloride diffusion coefficient of cementitious materials through rapid measurements of water permeability and pore diameter.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Elizabeth Powell, Yolanda Ohene, Marco Battiston, Ben R. Dickie, Laura M. Parkes, Geoff J. M. Parker
Summary: This study evaluated the impact of different modeling paradigms on human blood-brain barrier (BBB) water exchange measurements and quantified the accuracy and repeatability of BBB-FEXI at 3T. The results showed that compartmental modeling of BBB-FEXI signals can provide accurate and repeatable measurements, but relaxation time and partial volume effects may cause model-dependent biases.
MAGNETIC RESONANCE IN MEDICINE
(2023)
Article
Engineering, Geological
Qiao Wang, Haijian Xie, Jiawei Wu, Liangtong Zhan, Zhanhong Qiu
Summary: The study found that GCLs are recommended for use in arid and semi-arid regions over CCLs. Advection plays a more significant role in methane migration through SL + GCL and SL + CCL compared to diffusion. As the moisture content of SL increases, its effectiveness in reducing methane emissions also increases. Using a composite cover of GCL + SL saves space, with the difference in saved space increasing with moisture content.
GEOTEXTILES AND GEOMEMBRANES
(2021)
Article
Pharmacology & Pharmacy
Tatsiana Suvorava, Sara Metry, Stephanie Pick, Georg Kojda
Summary: Vascular tone regulation by nitric oxide is a crucial physiological function, with endothelial dysfunction potentially being an underlying cause of hypertension. Increasing eNOS activity reduces blood pressure, while decreasing activity has the opposite effect. These findings have important implications for pre-hypertensive treatment.
BIOCHEMICAL PHARMACOLOGY
(2022)
Article
Chemistry, Physical
Tatyana V. Volkova, Olga R. Simonova, German L. Perlovich
Summary: Evaluation of drug permeability is a complex task. In this study, the permeability of a set of drugs with diverse structures was determined using PermeaPad barrier and Franz diffusion cell. The permeability coefficients were analyzed and correlated with physicochemical properties and structure descriptors. The best fitting equations were derived using solubility and diffusion theory. The study also revealed the impact of pH and 2-hydroxypropyl-b-cyclodextrin on the permeability of selected amphiphilic compounds.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Biochemistry & Molecular Biology
Alexandra Igrunkova, Alexey Fayzullin, Natalia Serejnikova, Tatiana Lipina, Alexandr Pekshev, Anatoly Vanin, Victoria Zaborova, Elena Budanova, Dmitry Shestakov, Igor Kastyro, Anatoly Shekhter
Summary: This study compared the wound healing effects of B-DNIC-GSH and NO-CGF. The results showed that B-DNIC-GSH had a more pronounced effect in reducing inflammation and promoting wound healing compared to NO-CGF.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Editorial Material
Anesthesiology
Marc Gimenez-Mila, Alain Vuylsteke
JOURNAL OF CARDIOTHORACIC AND VASCULAR ANESTHESIA
(2018)
Article
Anesthesiology
Katherine Meadows, Richard Gibbens, Caroline Gerrard, Alain Vuylsteke
JOURNAL OF CARDIOTHORACIC AND VASCULAR ANESTHESIA
(2018)
Editorial Material
Anesthesiology
Kiran Salaunkey, Alain Vuylsteke
JOURNAL OF CARDIOTHORACIC AND VASCULAR ANESTHESIA
(2019)
Review
Anesthesiology
Oriana Ng, Marc Gimenez-Mila, David P. Jenkins, Alain Vuylsteke
JOURNAL OF CARDIOTHORACIC AND VASCULAR ANESTHESIA
(2019)
Letter
Respiratory System
Robin Cherian, Bharatendu Chandra, Moon Ley Tung, Alain Vuylsteke
EUROPEAN RESPIRATORY JOURNAL
(2020)
Article
Cardiac & Cardiovascular Systems
Muhammad U. Rafiq, Kamen Valchanov, Alain Vuylsteke, Fouad J. Taghavi, Swetha B. Iyer, Catherine D. Sudarshan, Jo-Anne Fowles, Simon Anderson, Pooveshni Govender, Miranda Holmes, Alexander White, Abhi Mishra, Lucy Mwaura, David P. Jenkins
EUROPEAN JOURNAL OF CARDIO-THORACIC SURGERY
(2020)
Article
Critical Care Medicine
Rachel Jooste, Kathryn M. Rowan, Nicola Symes, Alain Vuylsteke
Summary: The National ECMO Service in England responded to the challenges of the COVID-19 pandemic by implementing a central electronic referral system. This system allowed for improved communication and collaboration between ECMO centers and facilitated real-time sharing of resources, enabling the service to effectively provide care and work as a multidisciplinary team.
JOURNAL OF THE INTENSIVE CARE SOCIETY
(2022)
Article
Critical Care Medicine
Ahmed M. H. A. M. Mostafa, Christopher J. Tuttle, Mikel A. Mckie, Jo-Anne Fowles, Jasvir Parmar, Alain Vuylsteke
Summary: This study aims to assess the health-related quality of life (HRQOL) of patients who underwent VV-ECMO for acute severe respiratory failure and explore predictors of poor HRQOL. The study found that survivors of VV-ECMO have reduced HRQOL in multiple domains at 6 months, with pain reported most frequently. Patients who had limb ischaemia, renal replacement therapy, or were transfused more than four units of platelets are particularly at risk of poor HRQOL.
JOURNAL OF THE INTENSIVE CARE SOCIETY
(2023)
Article
Critical Care Medicine
Dariusz R. Wozniak, Antonio Rubino, Aileen L. W. Tan, Nicola L. Jones, Stephen T. Webb, Alain Vuylsteke, Earl Palas, Timothy G. Quinnell, Ian E. Smith, Michael G. Davies
Summary: CPAP is an effective treatment modality for patients with severe COVID-19 pneumonia, improving hypoxemia and preventing invasive ventilation. In addition to the severity of hypoxemia, biomarkers of inflammation and coagulopathy may be more useful predictors of CPAP responsiveness.
JOURNAL OF THE INTENSIVE CARE SOCIETY
(2022)
Letter
Critical Care Medicine
Alex Warren, Luigi Camporota, Stephane Ledot, Ian Scott, Alain Vuylsteke
Article
Materials Science, Biomaterials
Joanna R. Stasiak, Marta Serrani, Eugenia Biral, James Taylor, Azfar G. Zaman, Samantha Jones, Thomas Ness, Francesco De Gaetano, Maria Laura Costantino, Vito D. Bruno, Saadeh Suleiman, Raimondo Ascione, Geoff D. Moggridge
BIOMATERIALS SCIENCE
(2020)
Correction
Materials Science, Biomaterials
Joanna R. Stasiak, Marta Serrani, Eugenia Biral, James V. Taylor, Azfar G. Zaman, Samantha Jones, Thomas Ness, Francesco De Gaetano, Maria Laura Costantino, Vito D. Bruno, Saadeh Suleiman, Raimondo Ascione, Geoff D. Moggridge
BIOMATERIALS SCIENCE
(2020)
Correction
Chemistry, Physical
Tariq Allie-Ebrahim, Qingyu Zhu, Pierre Brauer, Geoff D. Moggridge, Carmine D'Agostino
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2019)
Article
Biochemistry & Molecular Biology
Julia Claudiane da Veiga, Neidiquele Maria Silveira, Amedea Barozzi Seabra, Ilana Urbano Bron
Summary: This review investigates the strategy of using nitric oxide (NO) donors to extend postharvest shelf-life and improve fruit quality, discusses the interactions between NO and ethylene or reactive oxygen species, and highlights the potential of nanotechnology in NO applications.
NITRIC OXIDE-BIOLOGY AND CHEMISTRY
(2024)