Study on the Effect of Flexible Passive Deformation of Tuna Caudal Fin on Swimming Performance.

The high-speed and efficient swimming characteristics of tuna are valuable for designing bio-inspired underwater vehicles. Tuna use their highly deformable caudal fins as propulsors during swimming. Caudal fin deformation is categorized into skeletal-controlled active deformation and fluid-induced flexible passive deformation.

Design, synthesis and anti-tumor evaluation of novel pyrimidine and quinazoline analogues.

Disrupting microtubule dynamics has emerged as a promising strategy for cancer therapy. Novel trimethoxyanilino-substituted pyrimidine and quinazoline derivatives were designed and synthesized to serve as potent microtubule-inhibiting agents with anti-proliferative activity. Compound 2k demonstrates high efficacy against B16-F10 cancer cells at low nanomolar concentrations, with an IC of 0.

Development of a cost-effective confocal Raman microscopy with high sensitivity.

Confocal Raman microscopy is a powerful technique for identifying materials and molecular species; however, the signal from Raman scattering is extremely weak. Typically, handheld Raman instruments are cost-effective but less sensitive, while high-end scientific-grade Raman instruments are highly sensitive but extremely expensive. This limits the widespread use of Raman technique in our daily life.

Corrigendum: Association between nutritional status, physical fitness and executive functions in preadolescents: a person-centered approach.

[This corrects the article DOI: 10.3389/fped.2022.

The role of physical literacy and mindfulness on health-related quality of life among college students during the COVID-19 pandemic.

This study aimed to examine the role played by the physical literacy and mindfulness in the health-related quality of life (QoL) of college students. In early 2022, 24,236 college students from three universities in southern China were recruited in the study. R software and the lavvan package was utilized to build the structural equation model.

Construction of ecological security pattern in Ningbo based on remote sensing ecological index and graph theory knowledge.

Constructing ecological security pattern and identifying ecological important areas are the focus of current research on regional ecological security. With Ningbo City as a case study area, we identified ecological sources by remote sensing ecological index, the ecological corridors and pinch point by circuit theory model, and the minimum spanning tree and cuts by graph theory algorithm. The results showed that there were 203 ecological sources in Ningbo, and that the main type of land cover was forest, including a small amount of paddy fields and flooded vegetation.

Relationship among positive self-esteem, physical literacy, and physical activity in college students: a study of a mediation model.

Background: In light of the substantial decline in physical activity during college years, this study aims to examine the relationship between positive self-esteem, physical literacy, and physical activity in order to investigate the mechanisms for improving physical activity in college students and to provide a foundation for future interventions.

Methods: A cross-sectional study design was employed in this study. A total of 5,184 Participants, aged between 17 and 21 years ( = 18.

pH-Dependent Hydrogenotrophic Denitratation Based on Self-Alkalization.

Producing stable nitrite is a necessity for anaerobic ammonium oxidation (anammox) but remains a huge challenge. Here, we describe the design and operation of a hydrogenotrophic denitratation system that stably reduced >90% nitrate to nitrite under self-alkaline conditions of pH up to 10.80.

Association between nutritional status, physical fitness and executive functions in preadolescents: A person-centered approach.

Objective: In the current study, a person-centered approach was adopted to investigate the relationship between nutritional status and physical fitness profiles and executive functions (EF) in preadolescents.

Methods: Participants ( = 10.8 years; Male = 50.

Effect of isometric handgrip exercise on cognitive function: Current evidence, methodology, and safety considerations.

Cognitive function is essential for most behaviors of daily living and is a critical component in assessing the quality of life. Mounting prospective evidence supports the use of isometric handgrip exercise (IHE) as a small muscle mass practice to promote health-related outcomes in clinical and healthy populations. The aim of the present review was to systematically investigate whether IHE is effective in improving the cognitive function of adults (aged ≥18 years).

Biotic shortcut deselenization coupled to abiotic sulfide oxidation enabled pollutants co-removal and products recovery.

Selenate and sulfide are both contaminants which severely pollute water bodies. Respective bioremediation of selenate- and sulfide-contaminated wastewaters requires abundant electron donors and acceptors. Here, we present a novel concept coupling biological selenate to selenite (shortcut deselenization) and chemical sulfide-driven selenite reduction, to remove multiple pollutants simultaneously.

Development and simulation of a struvite crystallization fluidized bed reactor with enhanced external recirculation for phosphorous and ammonium recovery.

Recovering nitrogen and phosphorus from waste water in the form of struvite is an effective way to recycle resources. The insufficient purity of the resulting struvite and the large loss of nitrogen and phosphorus are the challenges at present. Therefore, it is urgent to develop innovative method in struvite crystallization process for efficient nitrogen and phosphorus recovery.

Assessing factor structure of the simplified Chinese version of Perceived Physical Literacy Instrument for undergraduates in Mainland China.

Background: : To evaluate the factor structure of the simplified Chinese version of "Perceived Physical Literacy Instrument" (PPLI) among Chinese undergraduates.

Methods: The PPLI scale (simplified Chinese version) is based on the original 18-item Cantonese version of PPLI scale, which was first constructed and validated to measure the perceived physical literacy (PL) of physical education (PE) teachers and adolescents in Hong Kong. In this study, 622 undergraduates were randomly split into two subsets.

Prevalence and risk factors for bacterial vaginosis and cervicitis among 511 female workers attending gynecological examination in Changchun, China.

Objective: This study aims to identify the prevalence of bacterial vaginosis (BV) and cervicitis among 511 female workers attending gynecological examination and determine the risk factors for bacterial vaginosis and cervicitis.

Materials And Methods: This study enrolled 511 female workers attending gynecological examination in Changchun Obstetrics-Gynaecology Hospital in Changchun city from January 1,2015 to December 31, 2015. A structured questionnaire was designed to survey the general demographic characteristics, living habits and health status of the participants.