Fuzzing mechanism and fibre fatigue of wool knit

The fibre fatigue fibrillation and even fracture of knitted wool fabric under the rubbing force have been studied using scanning electron microscopy. The fatigue fracture sections, involved in the process of abrasion, show that loop hairs predominantly participate in fuzzing and the free ends exist in either pills formation or wearing-off. The major form of failure consists of the bend fatigue which is about 70 - 80% of the total failure and cracks. Fibrils occur in torsional fatigue (10 - 18%) and fibrillation head-ends comprise both bending and twisting

Study on the Moderating Effect of Body Mass Index in Correlation of Anxiety and Depression Disorders

BackgroundAs two different kinds of mental disorders, anxiety disorder and depressive disorder could probably coexist in one with the proceeding of the illness. However, there are few studies on how to prevent and treat the coexistence of anxiety and depressive disorders.ObjectiveTo discuss the relationship between anxiety and depressive disorders, and the moderating effect of body mass index (BMI) in their relationship.MethodsBy use of simple random sampling, 86 outpatients and inpatients with anxiety disorders were selected from the First Affiliated Hospital of Nanchang University during June 1st to August, 31st, 2021. A self-made demographic questionnaire was used to obtain the demographic information. The Hamilton Anxiety Rating Scale was used to assess the anxiety level. The Hamilton Rating Scale for Depression was used to assess the depression level. Pearson correlation analyses were performed to assess the relationship between anxiety and depression disorders, and that between BMI and anxiety or depression disorder. Hierarchical regression analysis was adopted to explore the moderating effect of BMI on the relationship between anxiety and depressive disorders.ResultsEighty eligible cases were also diagnosed with depression. The anxiety prevalence was significantly increased with depression prevalence (r=0.70, P<0.01) . BMI had no significant linear correlation with anxiety prevalence (r=0.03, P>0.05) . BMI also had no significant linear correlation with depression prevalence (r=0.14, P>0.05) . BMI moderated the relationship between anxiety and depression disorders significantly (β=-0.16, P<0.01) .ConclusionBMI can weaken the effect of anxiety disorder on depression, helping prevent them from developing into comorbid mental disorders, providing new ideas for developing new dietary standard or exercise patterns for mental health prevention and treatment in the future and expands the research field of nutritional psychiatry to a certain extent

Phosphoproteomics Screen Reveals Akt Isoform-Specific Signals Linking RNA Processing to Lung Cancer

The three Akt isoforms are functionally distinct. Here we show that their phosphoproteomes also differ, suggesting that their functional differences are due to differences in target specificity. One of the top cellular functions differentially regulated by Akt isoforms is RNA processing. IWS1, an RNA processing regulator, is phosphorylated by Akt3 and Akt1 at Ser720/Thr721. The latter is required for the recruitment of SETD2 to the RNA Pol II complex. SETD2 trimethylates histone H3 at K36 during transcription, creating a docking site for MRG15 and PTB. H3K36me3-bound MRG15 and PTB regulate FGFR-2 splicing, which controls tumor growth and invasiveness downstream of IWS1 phosphorylation. Twenty-one of the twenty-four non-small-cell-lung carcinomas we analyzed express IWS1. More importantly, the stoichiometry of IWS1 phosphorylation in these tumors correlates with the FGFR-2 splicing pattern and with Akt phosphorylation and Akt3 expression. These data identify an Akt isoform-dependent regulatory mechanism for RNA processing and demonstrate its role in lung cancer

Multiple ITS Copies Reveal Extensive Hybridization within Rheum (Polygonaceae), a Genus That Has Undergone Rapid Radiation

During adaptive radiation events, characters can arise multiple times due to parallel evolution, but transfer of traits through hybridization provides an alternative explanation for the same character appearing in apparently non-sister lineages. The signature of hybridization can be detected in incongruence between phylogenies derived from different markers, or from the presence of two divergent versions of a nuclear marker such as ITS within one individual.In this study, we cloned and sequenced ITS regions for 30 species of the genus Rheum, and compared them with a cpDNA phylogeny. Seven species contained two divergent copies of ITS that resolved in different clades from one another in each case, indicating hybridization events too recent for concerted evolution to have homogenised the ITS sequences. Hybridization was also indicated in at least two further species via incongruence in their position between ITS and cpDNA phylogenies. None of the ITS sequences present in these nine species matched those detected in any other species, which provides tentative evidence against recent introgression as an explanation. Rheum globulosum, previously indicated by cpDNA to represent an independent origin of decumbent habit, is indicated by ITS to be part of clade of decumbent species, which acquired cpDNA of another clade via hybridization. However decumbent and glasshouse morphology are confirmed to have arisen three and two times, respectively.These findings suggested that hybridization among QTP species of Rheum has been extensive, and that a role of hybridization in diversification of Rheum requires investigation

Calculation and Analysis of Horizontal and Vertical Lapping Angles in Tricot Warp Knitting

The lapping angle, which affects the style and quality of production, has been studied as a parameter of weft knitting. But the importance of the lapping angle has not been considered during the warp-knitting cycle. This paper shows that the lapping angle exists in the process of warp knitting and can be divided into horizontal and vertical lapping angles. Models for the lapping angles of closed and open loops were devised, and the lapping angles (horizontal and vertical lapping angles) of closed and open loops were calculated and analyzed. Furthermore, the paper seeks to investigate the factors that influence the lapping angle of tricot warp-knitted fabrics and summarize the rules. Moreover, the vertical lapping angle can affect the loop coverage. Results reveal that the decrease in number of underlaps and an increase in take-off density enables loops of the front guide bar to show on the face of the fabric. Moreover, it is also advantageous for an apparent front loop visibility when the front guide bar knits in open loop

Anonymous-authentication scheme based on fog computing for VANET.

Privacy protection in vehicular ad hoc networks (VANETs) has always been a research hotspot, especially the issue of vehicle authentication, which is critical to ensure the safe communication of vehicles. However, using the real identity in the process of authentication can easily result in a leak of the privacy information of the vehicles. Therefore, most existing privacy-protection schemes use anonymous authentication and require one-to-one communication between vehicles and the trusted authority (TA). However, when the number of vehicles is too large, network congestion can take place. In addition, the process of updating the anonymous by the TA or the vehicle itself, can result in both poor real-time performance and leakage of the system master key. To solve these problems, this study proposes a fog-computing-based anonymous-authentication scheme for VANETs; the scheme reduces the communication burden of the TA by enabling self-authentication between vehicles and road-side units (RSUs), thus improving the vehicle-authentication efficiency. For updating the anonymous, we design a fog-computing-based pseudonym-updating and -tracking strategy, which guarantees real-time communication and reduces the instances of re-authentication interactions for legitimate vehicles. The experimental results show that the scheme not only meets the privacy-protection requirements of VANETs but also offers better performance than that of the existing anonymous-authentication schemes

Mechanical Properties of Polypropylene Warp-Knitted Hernia Repair Mesh with Different Pull Densities

The medical polypropylene monofilament with a diameter of 0.10 mm was used as the material. Four different pull densities and two different warp run-ins were set up on the electronic traverse high-speed Tricot warp knitting machine, with the gauge of E28. The raw material was used to knit four variations of single bar plain knitted fabrics with 1 in-1 miss setting. Each variation required eight samples. The mechanical properties of the above 32 warp-knitted fabric samples are tested, including their tensile stress (in both vertical and horizontal directions), tearing stress (in both vertical and horizontal directions) and bursting stress. The results obtained shows that the relationship between the vertical, the horizontal stress, and the pull density are not monotonic. The tensile stress in the vertical direction firstly decreases and then increases with an increase of the pull density; however, the tensile stress in the horizontal direction firstly increases and then slightly decreases with an increase of the pull density; again the vertical tensile stress of all fabrics was always higher than the horizontal tensile stress. The bursting stress has a positive linear relation to the pull density. The vertical tearing stresses of four samples were greater than the horizontal tearing stress

Fuzzing mechanism and fibre fatigue of wool knit

238-243The fibre fatigue fibrillation and even fracture of knitted wool fabric under the rubbing force have been studied using scanning electron microscopy. The fatigue fracture sections, involved in the process of abrasion, show that loop hairs predominantly participate in fuzzing and the free ends exist in either pills formation or wearing-off. The major form of failure consists of the bend fatigue which is about 70 - 80% of the total failure and cracks. Fibrils occur in torsional fatigue (10 - 18%) and fibrillation head-ends comprise both bending and twisting

Wpływ elastyczności na właściwości elektryczne dzianin przewodzących

Because of softness and lightness, various flexible sensors have attracted extensive attention and been widely studied. Sensing mechanism of most wearable sensors is derived from an elastic substrate, such as fabric or polymer materials. Although the mechanical-electrical performance of several flexible sensors has been reported, including sensitivity, linearity hysteresis and repeatability, research on the effects of substrate elasticity on sensor capacity is scarce. In this paper, the impact of spandex content, washing and ironing processing on the elasticity of weft knitted sensors was investigated by the constant- extension test method. Afterwards, differences in sensing properties between diverse elastic sensors under single as well as repeated stretch were reported. The experimental results showed that spandex content does influence the elasticity of knitted fabric, which has a further great effect on sensing properties. A highly elastic sensor is capable of detecting large-scale human motions, while sensors with lower elasticity are opposite, which demonstrates that elastic sensors can be designed and chosen to meet the requirements of detecting and monitoring distinct human motions.Ze względu na swoją delikatność i lekkość czujniki elastyczne przyciągają uwagę i są często stosowane. Często opisywane jest działanie mechaniczno-elektryczne kilku elastycznych czujników, w tym czułość, histereza liniowości i powtarzalność, badania nad wpływem elastyczności podłoża na pojemność czujnika są dość rzadkie. W pracy zbadano wpływ zawartości spandex’u, obróbki prania i prasowania na sprężystość dzianin wątkowych metodą badania stałego rozciągania. Następnie odnotowano różnice we właściwościach wykrywania między różnymi czujnikami sprężystymi przy pojedynczym i powtarzanym rozciągnięciu. Wyniki eksperymentalne wykazały, że zawartość spandex’u wpływa na elastyczność dzianiny, co dodatkowo ma duży wpływ na właściwości wyczuwalne. Wyniki pokazały, że wysoce elastyczny czujnik jest w stanie lepiej wykrywać ruchy człowieka, niż czujniki o niższej elastyczności, co pokazuje, że czujniki elastyczne można zaprojektować i wybrać tak, aby spełniały wymagania wykrywania i monitorowania różnych ruchów człowieka