Influencing factors of corticomuscular coherence in stroke patients

Stroke, also known as cerebrovascular accident, is an acute cerebrovascular disease with a high incidence, disability rate, and mortality. It can disrupt the interaction between the cerebral cortex and external muscles. Corticomuscular coherence (CMC) is a common and useful method for studying how the cerebral cortex controls muscle activity. CMC can expose functional connections between the cortex and muscle, reflecting the information flow in the motor system. Afferent feedback related to CMC can reveal these functional connections. This paper aims to investigate the factors influencing CMC in stroke patients and provide a comprehensive summary and analysis of the current research in this area. This paper begins by discussing the impact of stroke and the significance of CMC in stroke patients. It then proceeds to elaborate on the mechanism of CMC and its defining formula. Next, the impacts of various factors on CMC in stroke patients were discussed individually. Lastly, this paper addresses current challenges and future prospects for CMC

Preparation of flower-like hydrogel and its application in sea water desalination

The situation of global water crisis is becoming more and more serious[1]. Due to the inconvenience of fresh water carrying or long-term storage and deterioration, the personnel and equipment of oceangoing ships are in urgent need of fresh water resources[2]. However, the traditional seawater desalination technology will consume fossil energy or its economy is not high. Under the background of a series of green ship development plans, people focus on green clean energy to solve the problem of fresh water shortage[3]. Interfacial photoevaporation is an effective strategy to promote seawater desalination and pollutant treatment. Photothermal conversion materials and evaporators have shown their good performance in improving seawater desalination efficiency. In this paper, the photohot water gel prepared by calcium chloride, polyvinyl alcohol, sodium citrate, tannic acid and ferric chloride was used as the photothermal conversion material[4]. The properties of photoevaporative seawater desalination materials were studied by a series of instruments such as optical microscope and contact Angle measuring instrument. The experimental results show that the flower-like hydrogel has high photothermal conversion efficiency and has a good application prospect in green Marine desalination field

Preparation of flower-like hydrogel and its application in sea water desalination

The situation of global water crisis is becoming more and more serious[1]. Due to the inconvenience of fresh water carrying or long-term storage and deterioration, the personnel and equipment of oceangoing ships are in urgent need of fresh water resources[2]. However, the traditional seawater desalination technology will consume fossil energy or its economy is not high. Under the background of a series of green ship development plans, people focus on green clean energy to solve the problem of fresh water shortage[3]. Interfacial photoevaporation is an effective strategy to promote seawater desalination and pollutant treatment. Photothermal conversion materials and evaporators have shown their good performance in improving seawater desalination efficiency. In this paper, the photohot water gel prepared by calcium chloride, polyvinyl alcohol, sodium citrate, tannic acid and ferric chloride was used as the photothermal conversion material[4]. The properties of photoevaporative seawater desalination materials were studied by a series of instruments such as optical microscope and contact Angle measuring instrument. The experimental results show that the flower-like hydrogel has high photothermal conversion efficiency and has a good application prospect in green Marine desalination field

Frozen salting hydrogels consisting of polydopamine and hydroxyapatite used for oil-water separation

In recent years, with the continuous advancement of industrialization and economic globalization, oil spill pollution incidents have become more and more frequent, among which marine oil pollution is the most prominent. If a large amount of oily sewage is not treated in time, it will pose a great threat to the safety of marine ecology. In this work, natural and biological materials were used to prepare PDA-HAP hydrogel, and the membrane was treated by freezing and salting out to effectively improve the strength of the membrane. The prepared membrane has good flux, can be used repeatedly, and is environmentally friendly. Therefore, this PDA-HAP hydrogel will play a significant role in the field of oily sewage treatment

Superhydrophilic polymer coatings based on PVDF membranes for oil-water separation

Recently, the excellent anti-pollution performance of superhydrophilic membrane has attracted much attention in the field of wastewater treatment and oil-water separationIn. At present, the widely used commercial membrane materials have good pore structure and mechanical properties, but most of the commercial membranes are hydrophobic, so a simple, environmentally friendly and universal method is urgently needed to change its hydrophobic membrane to superhydrophilic membrane. In this paper, tannic acid (TA, natural plant polyphenols) and polydopamine (PDA) were used to build an anti-stain coating. The synthesized hydrophilic polymer containing polyphenols crosslinks with the base layer through hydrogen bonding, π-π and Michael addition. After the modified PVDF membrane is moistened by water, the superhydrophilic polymer network on the surface binds the water to form a stable hydration layer, showing the superhydrophilic/underwater superhydrophobic properties. The wettability of the modified film in air and water was investigated. The contact Angle of the modified separation membrane prepared in this paper is more than 150°, and the separation efficiency exceeded 98%. The good flux and efficiency can be maintained after 5 cycles, and it is found that the membrane has a certain anti-protein adsorption capacity. The modified membrane has high separation flux and excellent reuse, and has great uses in other ways

Preparation of sodium alginate-polyvinyl alcohol@PVDF hybrid membrane for efficient oil-water separation

Oily sewage is widespread in petrochemical and machinery manufacturing industries. Direct discharge not only wastes water and oil resources, pollutes the ecological environment, but also affects the survival and health of humans and other organisms. The traditional oil-water separation method has strong limitations, poor economy and low separation efficiency. Sodium alginate (SA) and polyvinyl alcohol (PVA) were uniformly coated on the surface of PVDF membrane, and superhydrophilic SA-PVA@PVDF hybrid membrane was prepared by multiple cyclic self-assembly. The oil-water separation experiment was carried out by using the membrane. The initial separation efficiency was 99.8%, and the overall separation efficiency remained above 98.3% after 10 cycles of regeneration experiments. This study provides a new idea for the low-cost, green and simple preparation of superhydrophilic-underwater superoleophobic separation materials

Environmental-friendly regenerated lignocellulose functionalized cotton fabric to prepare multi-functional degradable membrane for efficient oil–water separation and solar seawater desalination

Abstract Freshwater pollution and shortage have become an imminent problem. Therefore, it is necessary to develop a multi-functional membrane for the production of fresh water. In this work, the regenerated lignocellulose modified cotton fabric was developed as a novel, multi-functional and degradable membrane (LCPT@CF) for efficient oil–water separation and solar steam generation for the first time. The fabrication method has the merits of simple, environmentally friendly and cost effective. The regenerated lignocellulose was adhered on the surface of cotton fabric by tannic acid and polyvinyl alcohol complexes tightly, and the multilayered structures of the LCPT@CF can be formed, which endowed the membranes with underwater superoleophobic property and durability. The underwater superoleophobic property enabled LCPT@CF to purify various kinds of oil-in-water emulsions with a separation efficiency of more than 99.90%. Moreover, benefiting from the excellent photothermal conversion capacity of regenerated lignocellulose, the LCPT@CF achieved high evaporation rate of 1.39 kg m−2 h−1 and favorable evaporation efficiency of 84% under 1 sun illumination, and the LCPT@CF also presented excellent salt-resistance for evaporating seawater for 20 cycles, without salt accumulation. More importantly, the LCPT@CF could be naturally degradable by microorganisms in the natural condition within 3 months, which had outstanding environmental friendliness. These above results demonstrated that the green and efficient LCPT@CF could play great potential in oil–water separation and sewage purification