Mass-manufactured stretchable negative Poisson's ratio yarn TENG as a fundamental material for environmental energy harvesting and self-powered sensors.

Carbon microspheres were prepared using cellulose as a precursor by hydrothermal carbonization and the composites carbon filler poly(lactic acid) polymeric matrix. The morphologies structures of characterized scanning electron microscopy Fourier-transform infrared spectrometry. crystallinity, tensile properties thermal tested. results show that microsphere/poly(lactic improved addition CMSs.

In order to study the deformation behavior of double arrowhead (DAH) auxetic metamaterials under different forces with directions as well effects geometry parameters on Poisson's ratio, this paper assembled an advanced researching method by combining industrial design SolidWorks software, finite element analysis Abaqus software and three-dimensional printed technology. Results show that DAH structure expanded in direction perpendicular force first contracted strain increasing when it was...

BackgroundCurrently, the existing evidence on correlation between serum total bilirubin (STB) and Parkinson's disease (PD) is insufficient. The objective of this study was to clarify relationship STB levels PD within US (United States) population.MethodsA cross-sectional analysis conducted using data from 25,637 participants in National Health Nutrition Examination Survey (NHANES) 1999–2018. Weighted logistic regression, smooth curve fitting, subgroup analysis, sensitivity analyses were...

We intend to explore whether sleep duration and patterns were associated with obesity among the adult American population. Our study analyzed data from 4540 adults (2007-2008, 2015-2018) in National Health Nutrition Examination Survey (NHANES) database. Self-reported questionnaires used collect on duration, excessive daytime sleepiness, problems. The overall pattern score was calculated categorized into three types: healthy, intermediate, poor patterns. Multivariable logistic regression...

CA125 (carbohydrate antigen 125) is an important biomarker of ovarian cancer, so developing effective method for its detection great significance. In the present work, a novel sandwich-like electrochemical immunosensor (STEM) was constructed by preparing nanoribbon-like Ti3C2Tx MXenes (Ti3C2TxNR) to immobilize primary antibody (PAb) and UIO-66-NH2 MOFs structure second (SAb) electroactive toluidine blue (Tb) probe. this designed STEM assay, as-prepared Ti3C2TxNR nanohybrid offers advantages...

Hyperelastic auxetic cellular materials are negative Poisson’s ratio (NPR) and show transverse expansion when stretched lateral contraction compressed. The influence of the direction force on property, effect cell angle ratio, buckling property RH structures has been discussed in this article. results that: re-entrant hexagon (RH) structure never shows non-auxetic behaivour it is subjected to load vertical while performance reach a certain value force. When within displacement, with smaller...

Abstract Background Migraine is painful disease in which neurotransmitters related to pain transmission play an important role. Hejie Zhitong prescription (HJZT) has been used the clinic as effective for treatment of migraine many years. Our team aimed further explore its antimigraine mechanism based on previous research results and inhibitory effect HJZT nitroglycerine (NTG)-induced well synergistic with pentobarbital sodium promoting sleep. Methods Sixty mice were randomly assigned groups...

Materials with a negative Poisson’s ratio (NPR) are also called auxetic materials, which as branch of mechanical metamaterials have drawn great deal attention in many areas. Origami tessellation structures (OTSs) exhibit an in-plane NPR; meanwhile, they may show out-of-plane NPR, be three-dimensional (3D) structures. In the crease pattern OTSs, there folding lines perpendicular directions. Contractions warp direction need backed weave Herein, and weft weaves used together three OTS Jacquard...

A critical issue facing mankind is how to effectively recycle plastic grocery bags. Currently, the most proven practice for bag recycling create numerous returning sites throughout nation. However, success compromised by voluntary nature of such activities. In this work, we investigate an alternative approach returning, diverting activities directly consumers or end users at home. Specifically, a simple process converting waste bags into high‐strength fibers and yarns designed tested in...

The metamaterials with negative Poisson’s ratio are called auxetic materials, which as a branch of has drawn lot attention in many areas. Existing knitting textiles combine flexibility and auxeticity, however the loose structure been main disadvantage for its application. In this study, we fabricated Miura origami fabrics by weaving technology order to acquire more stable textiles. results show that using combination fabric type elastic yarns, an can be realized jacquard loom. structure,...

Abstract In this paper, we investigate on the preparation of waste cotton fabric-based activated carbons by different methods. Two kinds carbon materials are prepared from fabric, structure and properties were characterized using instrumental analyses such as scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR). It is revealed that products one-step process composed macroporous network , which looks like sponge-type morphology, exhibit...

The main content dealt with in the paper was to present a flexible auxetic re-entrant honeycomb fabric, which made of formulated thermoplastic polyurethane material PolyFlex super elastic properties by 3D printing technology. fabric shows perpendicular expansion under tension and is flexible. So, its special property makes have great potential future functional materials. Wherein, cell angle key factor affecting Poisson’s ratio fabric. In this paper, structures different are manufac- tured...

The main content of this article theoretically analyzes the yarn diameter and Poisson's ratio variation braided auxetic yarns under axial strain. Braided are composed three components: wrap yarns, core yarn, stiff yarn. has a larger smaller elastic modulus than other two kinds but its rigidity is lower. There lack theoretical basis for predicting Based on geometric model, curve been determined trend deduced, aiming to predict strain with accurate parameters. experimental results show that...

Abstract Background Oxidative stress has been observed to be linked with migraines. The oxidative balance score (OBS) serves as a metric for evaluating the overall systemic status, where elevated OBS scores suggest increased exposure antioxidants. However, precise connection between and migraines not reported date. This study seeks investigate potential association migraine occurrences. Methods A cohort of 7,238 participants from National Health Nutrition Examination Survey (NHANES) spanning...

Background Constipation is one of the common gastrointestinal complications after stroke. It not only aggravates condition stroke, but also brings huge medical burden to patients, and has a negative impact on quality life patients. Auricular therapy, as part Chinese traditional acupuncture moxibustion, been found be effective in clinical treatment constipation. However, no systematic review investigated efficacy safety auricular therapy post-stroke Therefore, aim this assess effectiveness...

In the authors’ previous work, slub yarn was simulated by randomly determining fiber position with Monte Carlo method according to draft principle of ring-spun yarn. this paper, total torque each micro-element calculated considering contribution bending, twisting and stretching body. The is a regular twist can be equal between yarns conservation law twists. curve along axis also obtained. simulation values base obtained calculating average apparent segment that segment, respectively. angle...

Background The existing evidence concerning the correlation between dietary β -carotene intake and Parkinson’s disease (PD) is currently deemed insufficient. Thus, this research aims to investigate relationship both prevalence of PD all-cause mortality within US (United States) population. Methods employed cross-sectional analysis cohort studies utilizing data from 16,852 participants in National Health Nutrition Examination Survey (NHANES) spanning 2001 2018. Weighted logistic regression,...

In recent years, three kinds of auxetic yarns have mainly been developed, namely helical based on the ring spinning system and hollow spindle braided braiding system. However, these some drawbacks, such as an unstable structure or no obvious effect. this paper, were successfully by wrap filaments a core filament system, which overcame slippage problem in traditional yarn structure. Yarns spun different structural parameters filament, including diameter ratio, speed numbers filaments. The...

In this study, the porous carbonaceous microspheres (PCMs) were prepared using waste cotton fibers as precursor. The first hydrolyzed and pre-carbonized through hydrothermal process, then heat treated at 900 °C. ZnCl2 was used to catalyst promote hydrolysis of in process pore-forming agent subsequent treatment. pore structure PCMs evaluated by nitrogen adsorption/desorption test, Fourier Transform Infrared spectroscopy analysis X-ray photo-electron conducted determine its chemical...