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With the rapid development of mobile applications (apps), various types of mobile apps have become the main channels for smartphone interaction. The user's app switching behavior in mobile search tasks has also received attention from academia. This article uses the push-pull-mooring (PPM) theoretical model to determine the three influencing factors of push, pull, and mooring that affect user's app switching behavior in mobile search.

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Deep brain stimulation (DBS) can ameliorate motor symptoms in Parkinson's disease (PD), but its mechanism remains unclear. This work constructs a multi-scale brain model using the fMRI data from 27 PD patients with subthalamic DBS and 30 healthy controls. The model fits microscopic coupling parameters in the cortico-basal ganglia-thalamic neural loop to match individual connectivity, finding the "push-pull" effect of basal ganglia network.

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Application of an aqueous Zn-ion battery is plagued by a water-induced hydrogen evolution reaction (HER), resulting in local pH variations and an unstable electrode-electrolyte interface (EEI) with uncontrolled Zn plating and side reactions. Here, 4-methyl pyridine N-oxide (PNO) is introduced as a redox non-innocent additive that comprises a hydrophilic bipolar N-O ion pair as a coordinating ligand for Zn and a hydrophobic ─CH group at the para position of the pyridine ring that reduces water activity at the EEI, thereby enhancing stability. The N-O moiety of PNO possesses the unique functionality of an efficient push electron donor and pull electron acceptor, thus maintaining the desired pH during charging/discharging.

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Interfacial Push-Pull Dynamics Enable Rapid H Desorption for Enhanced Formate Electrooxidation.

ACS Appl Mater Interfaces

July 2024

State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.

Article Synopsis
  • The conversion of formate in alkaline solutions is important for fuel cell technology, but hydrogen adsorption on catalysts has been a challenge for efficiency.
  • A new catalyst strategy using palladium nanoparticles on a phosphorus-doped TiO substrate creates a "push-pull" effect, enhancing hydrogen release and transfer.
  • The improved Pd/TiO-P catalyst shows a mass activity of 4.38 A mg, significantly outperforming the previous Pd/TiO catalyst, indicating a major step forward in catalyst efficiency for fuel cells.
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Influence of floor inclination on handle push and pull forces production of the upper limb.

Appl Ergon

September 2024

Aix-Marseille Univ, CNRS, ISM, 163 Luminy Avenue, 13288 Marseille, Cedex 09, France.

Floor inclination can alter hand force production, and lower limb kinetics, affecting control operations, and threatening operator safety in various domains, such as aviation, naval, construction industry, or agriculture. This study investigates the effects of different floor inclinations, on handle push or pull force production. Participants performed maximal isometric contraction tasks requiring to exert a maximal voluntary force either by pulling or pushing a handle, at different floor inclinations from -30° to +30° about the transverse and longitudinal axes.

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