Results 91 to 100 of about 3,486 (198)

Performance comparison of pressure swing adsorption and amine‐based absorption for synthesis gas purification

The Canadian Journal of Chemical Engineering, Volume 104, Issue 9, Page 5012-5027, September 2026.
Comparison of PSA and amine‐based absorption for syngas purification shows that PSA offers lower energy intensity, global warming potential, and minimum selling price, making it a more sustainable option. However, absorption achieves higher syngas purity. A GREENSCOPE‐based multi‐criteria assessment guides optimal process selection.
Magno Fonseca Santos, Antonio Esio Bresciani, Rita Maria Brito Alves   +2 more
wiley   +1 more source

Seismic Tremor as a Precursor to Hydrothermal Explosions Near Mutnovsky Volcano (Kamchatka)

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Mutnovsky Volcano, ∼70 km SW of Petropavlovsk‐Kamchatsky, exhibits persistent degassing, hosts active hydrothermal springs and the Mutnovsky Geothermal Power Plant (MGPP) on its slopes. Using the network covariance matrix approach, we analyzed seismic data recorded in 2023–2024 by 15 seismic stations operating around Mutnovsky Volcano.
Y. Berezhnev, N. Belovezhets, N. M. Shapiro, S. Abramenkov, I. Abkadyrov, S. Yaskevich, D. Chebrov, I. Koulakov   +7 more
wiley   +1 more source

Assessing and Quantifying Variability Across Vacuum‐Assisted Resin Infusion Variants for Aerospace‐Grade Composite Manufacturing

Polymer Composites, Volume 47, Issue 15, Page 13664-13684, 10 August 2026.
Radar‐plot comparison of consolidation quality and flexural performance of composite laminates manufactured by six vacuum‐infusion routes, evaluated at the resin‐inlet and vacuum‐port regions. ABSTRACT Conventional vacuum‐assisted resin transfer molding (C‐VARTM) is recognized as a cost‐effective resin infusion technique for manufacturing large‐scale ...
Ilhan Kahraman, Nilperi Uysal, Çağlar Subaşı, Selin Dursun, Muhammet İskender, Özgü Çalın, Uğur Şimşir, Hatice S. Sas, A. Tuğrul Seyhan   +8 more
wiley   +1 more source

A Numerical Investigation of Enhancing Hydrate Dissociation via Co-Production with Shallow Gas upon a Large-Scale Model

Energies
Investigations into the production of gas hydrates from marine sediments have demonstrated that commercial viability necessitates a daily gas production rate of 130,000 to 200,000 m3.
Xin Lei, Weixin Pang, Qiang Fu, Yuhua Ma, Yang Ge, Lu Liu, Huiyun Wen   +6 more
doaj   +1 more source

Synergistic Mechanism Between Ir–Phosphinito Catalyst and HFIP Enables Asymmetric Hydrogenation of Ketones Under Acidic Conditions

Advanced Synthesis &Catalysis, Volume 368, Issue 15, 1 August 2026.
A cooperative mechanism between a phosphinito Ir complex and HFIP provides a low‐energy pathway for hydrogen activation. This allowed the development of a highly efficient catalytic system for the hydrogenation of ketones that operates under acidic conditions, enabling the reduction of substrates containing phenols and carboxylic acids with no added ...
Martí Sidro, Agustí Lledós, María Vicent‐Morales, Jordi Benet‐Buchholz, Giuseppe Sciortino, Antoni Riera, Xavier Verdaguer   +6 more
wiley   +1 more source

Car engine diagnostics using a vacuum gauge

Transportation and Information Technologies in Russia
Background. Various methods are widely used in diagnosing the technical condition of automotive engines, but most require highly skilled personnel and sophisticated equipment.
Oleg Yu. Goncharov
doaj   +1 more source

Microfluidic Valve‐Integrated Garment for Smooth Sequential Gradient Mechanotherapy

Advanced Intelligent Systems, Volume 8, Issue 8, August 2026.
We present a soft wearable sleeve that delivers smooth, gap‐free compression using overlapping air‐filled actuators and tiny microfluidic valves. The system reduces bulk, lowers power needs, and uses a smartphone‐sized control box. It can provide sequential gradient compression, gradient pressure holding, and fast deflation, supporting more portable ...
Run Ze Gao, Chen Xi Huang, Drew M. Werbowski, Jacqueline Mary Kormylo, Clark R. Dickerson, Carolyn L. Ren   +5 more
wiley   +1 more source

Study on the Evolution Law of Temperature, Pressure, and Productivity near the Well for Gas Hydrate Exploitation by Depressurization

Energies
In this paper, a one-dimensional model of gas–water two-phase productivity for hydrate depressurization is established, which takes into account permeability variation and gas–water two-phase flow.
Rongrong Qi, Hongfeng Lu, Chenlu Xu, Lu Yu, Changwen Xiao, Jinwen Du, Yan Li   +6 more
doaj   +1 more source

Enabling Ultrastable Microbubbles With Graphene Aerogel Enrichment and Machine Learning for Highly Efficient Carbon Storage

Electron, Volume 4, Issue 3, August 2026.
This study aims to introduce a novel‐designed structure of the colloidal aphron microbubbles reinforced by incorporating hydrophobic aerographene microparticles onto the hydrophobic outer shell. This results in the formation of a robust composite film and armored microbubble that offers exceptional ultrastability under elevated pressures of up to 400 ...
Mohammad Hossein Akhlaghi, Malek Naderi, Ali Pilehvar Meibody, Shurui Yang, Mojtaba Abdi‐Jalebi   +4 more
wiley   +1 more source

Influence of Chain Extender on The Thermal, Rheological, and Supercritical Foaming Behavior of Polyamide‐12

Macromolecular Materials and Engineering, Volume 311, Issue 8, August 2026.
Chain extender concentration strongly influence the batch foaming behavior of PA 12 under supercritical CO2. Increasing CE content improves melt stability, raises viscosity and broadens the foaming window, enabling fine, uniform cellular structures. The optimal 0.5 wt.% CE yields the highest nucleation density and lowest foam density, about 0.06–0.09 g/
Karim Ali Shah, Malvina Boutigny, Holger Ruckdäschel   +2 more
wiley   +1 more source