Reducing steaming times in the printing of nylon/elastane blend fabrics via chemical modification

Nylon fibres are commonly used in blends with elastane. One of the problems encountered in the printing of nylon/elastane blend fabrics is the necessity of long steaming times for fixation, which causes an increase in energy consumption. In this study, the possibility of printing polyamide fabrics with 1:2 metal complex dyes for short steaming times was investigated. For this aim, laboratory and sample scale trials were performed to develop a method of chemically modifying fibres so that polyamide fabrics can be printed in short steaming times. Based on the results obtained in both trials, it was noticed that the steaming time for fixation could be reduced from 30 minutes to 15 minutes by printing with 1:2 metal complex dyes without causing a loss of printing yield and without affecting the fastness adversly in case of applying cationisation pretreatment with a modified quaternary polyalkylamine compound based product. © 2021, Institute of Biopolymers and Chemical Fibres. All rights reserved.3130834We would like to thank to TUBITAK for supporting this study within the 3130834 coded TEYDEB project. In addition, we are grateful to the Serhas Tekstil Company for giving us the opportunity to realise sample scale industrial printing trials

Reproducibility in the absence of selective reporting : An illustration from large-scale brain asymmetry research

Altres ajuts: Max Planck Society (Germany).The problem of poor reproducibility of scientific findings has received much attention over recent years, in a variety of fields including psychology and neuroscience. The problem has been partly attributed to publication bias and unwanted practices such as p-hacking. Low statistical power in individual studies is also understood to be an important factor. In a recent multisite collaborative study, we mapped brain anatomical left-right asymmetries for regional measures of surface area and cortical thickness, in 99 MRI datasets from around the world, for a total of over 17,000 participants. In the present study, we revisited these hemispheric effects from the perspective of reproducibility. Within each dataset, we considered that an effect had been reproduced when it matched the meta-analytic effect from the 98 other datasets, in terms of effect direction and significance threshold. In this sense, the results within each dataset were viewed as coming from separate studies in an "ideal publishing environment," that is, free from selective reporting and p hacking. We found an average reproducibility rate of 63.2% (SD = 22.9%, min = 22.2%, max = 97.0%). As expected, reproducibility was higher for larger effects and in larger datasets. Reproducibility was not obviously related to the age of participants, scanner field strength, FreeSurfer software version, cortical regional measurement reliability, or regional size. These findings constitute an empirical illustration of reproducibility in the absence of publication bias or p hacking, when assessing realistic biological effects in heterogeneous neuroscience data, and given typically-used sample sizes

The effects of preparation period exercises on the hematological parameters of the taekwondo athletes

Purpose: This study aimed at examining the effects of preparation period exercises, which were applied for eight weeks to elite level taekwondo athletes, on the hematological parameters. Material: Totally 21 athletes with international degrees from the university taekwondo team participated in this study, 12 of whom were female (Mean age: 20.3 - Mean exercise age: 8.8) and 9 of whom were male athletes (Mean age: 20.3 - Mean exercise age: 9.5). The participants attended an 8-week exercise program for 5 days a week, which included basic motoric features and technical and tactical development. 4 cc blood samples were taken from the right antecubital vein before and after the preparation period exercises. On the blood samples, WBC, GRAN, GRAN %, LYM, LYM %, MID and MID % values were examined among leukocyte sub-groups; RBC, HGB, HCT, MCV, MCH, MCHC and RDWC values were examined among the erythrocyte sub-groups, and PLT, MPV, PCT and PDW values were examined among thrombocyte sub-groups. Results: At the end of the study, we determined that there was a statistically significant increase in the MCHC values of both the male and the female taekwondo athletes. Moreover, it was determined that there were statistically significant decreases in the HCT, MCV, MCH, MPV and PCT values of the female taekwondo athletes, and in the MCV, MPV and PCT values of the male taekwondo athletes. Conclusions: As a conclusion, we can state that the 8-week exercises applied during the preparation period affected the hematological parameters of the male and female taekwondo athletes to an extent, however, this effect was limited and it did not cause an important change

Вплив підготовчих вправ на гематологічні показники атлетів тхеквондо

Purpose: This study aimed at examining the effects of preparation period exercises, which were applied for eight weeks to elite level taekwondo athletes, on the hematological parameters. Material: Totally 21 athletes with international degrees from the university taekwondo team participated in this study, 12 of whom were female (Mean age: 20.3 - Mean exercise age: 8.8) and 9 of whom were male athletes (Mean age: 20.3 - Mean exercise age: 9.5). The participants attended an 8-week exercise program for 5 days a week, which included basic motoric features and technical and tactical development. 4 cc blood samples were taken from the right antecubital vein before and after the preparation period exercises. On the blood samples, WBC, GRAN, GRAN %, LYM, LYM %, MID and MID % values were examined among leukocyte sub-groups; RBC, HGB, HCT, MCV, MCH, MCHC and RDWC values were examined among the erythrocyte sub-groups, and PLT, MPV, PCT and PDW values were examined among thrombocyte sub-groups. Results: At the end of the study, we determined that there was a statistically significant increase in the MCHC values of both the male and the female taekwondo athletes. Moreover, it was determined that there were statistically significant decreases in the HCT, MCV, MCH, MPV and PCT values of the female taekwondo athletes, and in the MCV, MPV and PCT values of the male taekwondo athletes. Conclusions: As a conclusion, we can state that the 8-week exercises applied during the preparation period affected the hematological parameters of the male and female taekwondo athletes to an extent, however, this effect was limited and it did not cause an important change.Это исследование было направлено на изучение влияния упражнений периода подготовки, которые применялись в течение восьми недель для спортсменов тхэквондо элитного уровня, на гематологические показатели. Материал: Всего 21 спортсмен тхэквондо с международными степенями из команды университета участвовал в этом исследовании, 12 из которых были женщинами (средний возраст: 20,3 года - стаж занятий: 8,8 года) и 9 из них были мужчинами (средний возраст: 20,3 года - стаж занятий: 9,5 лет). Атлеты посещали 8-недельную программу упражнений по 5 дней в неделю, которая включала в себя основные двигательные функции и технико-тактическое развитие. Из правой переднекубитальной вены было взято 4 кубика крови до и после подготовительного периода упражнений. На образцах крови были исследованы значения WBC, GRAN, GRAN%, LYM, LYM%, MID и MID% среди подгрупп лейкоцитов; Значения RBC, HGB, HCT, MCV, MCH, MCHC и RDWC были исследованы среди подгрупп эритроцитов, а значения PLT, MPV, PCT и PDW были исследованы среди подгрупп тромбоцитов. Результаты: в конце исследования мы определили, что произошло статистически значимое увеличение значений MCHC как у мужчин, так и у женщин-спортсменов тхэквондо. Кроме того, было установлено, что статистически значимые снижения у женщин-спортсменов-тхэквондо и HCT, MCV, MCH, MPV и PCT были, а также у мужчин-спортсменов-тхэквондо MCV, MPV и PCT. Выводы. В заключение можно констатировать, что 8-недельные упражнения, применяемые в течение подготовительного периода, повлияли на гематологические параметры спортсменов-тхэквондо мужского и женского пола, однако этот эффект был ограниченным и не вызвал значительных изменений.Це дослідження було спрямоване на вивчення впливу вправ періоду підготовки, які застосовувалися протягом восьми тижнів для спортсменів тхеквондо елітного рівня, на гематологічні показники. Матеріал: Всього 21 спортсмен тхеквондо з міжнародними ступенями з команди університету брав участь в цьому дослідженні, 12 з яких були жінками (середній вік: 20,3 року - стаж занять: 8,8 року) і 9 з них були чоловіками (середній вік: 20,3 року - стаж занять: 9,5 років). Атлети відвідували 8-тижневу програму вправ по 5 днів на тиждень, яка включала в себе основні рухові функції і техніко-тактичний розвиток. З правої переднекубітальной вени було взято 4 кубика крові до і після підготовчого періоду вправ. На зразках крові були досліджені значення WBC, GRAN, GRAN%, LYM, LYM%, MID і MID% серед підгруп лейкоцитів; Значення RBC, HGB, HCT, MCV, MCH, MCHC і RDWC були досліджені серед підгруп еритроцитів, а значення PLT, MPV, PCT і PDW були досліджені серед підгруп тромбоцитів. Результати: в кінці дослідження ми визначили, що сталося статистично значуще збільшення значень MCHC як у чоловіків, так і у жінок-спортсменів тхеквондо. Крім того, було встановлено, що статистично значущі зниження у жінок-спортсменів-тхеквондо і HCT, MCV, MCH, MPV і PCT були, а також у чоловіків-спортсменів-тхеквондо MCV, MPV і PCT. Висновки. На закінчення можна констатувати, що 8-тижневі вправи, що застосовуються протягом підготовчого періоду, вплинули на гематологічні параметри спортсменів-тхеквондо чоловічої і жіночої статі, проте цей ефект був обмеженим і не викликав значних змін

Colored cotton fabric production without dyeing within the sustainablity concept in textile

The main subject of this study is to obtain colored cotton garments without dyeing process. For this aim, the use of naturally colored fibers instead of taking white cotton fibers and dyeing them into desired colors with reactive dyes was investigated. Firstly, the colors of the fabrics produced using naturally colored cotton were matched on the fabrics produced using white cotton and then quality-performance characteristics of the fabrics in question were tested. Technical (color, fastness, weight, wale/course density, bursting strength, pilling, abrasion resistance, bending rigidity, thermal comfort, air permeability, water vapor permeability, UV protective functionality and flame retardancy of the fabrics), economical (yarn, dye, auxiliary, water, electricity and labor costs of the production) and ecological (chemical oxygen demand, total dissolved solids, alkalinity of waste water) comparison of these fabrics were carried out. The results obtained in this study reveal that the performance properties of fabrics produced from naturally colored cotton are comparable with those produced from white cotton and even better in some respects. This means that it would be possible to eliminate dyeing process in future, if naturally colored cotton fiber production become common and the color gamut expands. © 2022 Elsevier B.V