bluuebunny/crossref_metadata_2025 huggingface dataset:
Einstein–Podolsky–Rosen steering under asymmetry noise channels
Authors: Cheng Wei-Wen , Zhou Wen-Qiang
Published: February 2021

Symmetric quantum correlations and properties have been often investigated earlier in the process of quantum decoherence. However, the asymmetric quantum features, such as steering, have been rarely considered in this context. In this work, we study Einstein–Podolsky–Rosen steering, measured by steering robustness R, for two-qubit systems under asymmetric noise channels. For the one-sided asymmetric noise channels, we explore the influence of several typical channels on the asymmetric decay of steering. Our results show that the asymmetric steering is directly linked to the initial state as well as the type of noises. We prove that asymmetric decay can be used to characterize the properties of the channels in some certain. For the two-sided asymmetric noise channels, the results show that the behavior of steering are also both initial states and combination types depended. Moreover, we show that there always exist asymmetric steering even the initial state is high symmetry for the depolarizing-amplitude damping combination channel.
Grading hypoxic-ischemic encephalopathy in neonatal EEG with convolutional neural networks and quadratic time–frequency distributions
Authors: Raurale Sumit A , Boylan Geraldine B , Mathieson Sean R , Marnane William P , Lightbody Gordon , O’Toole John M
Published: February 2021

Objective. To develop an automated system to classify the severity of hypoxic-ischaemic encephalopathy injury (HIE) in neonates from the background electroencephalogram (EEG). Approach. By combining a quadratic time–frequency distribution (TFD) with a convolutional neural network, we develop a system that classifies 4 EEG grades of HIE. The network learns directly from the two-dimensional TFD through 3 independent layers with convolution in the time, frequency, and time–frequency directions. Computationally efficient algorithms make it feasible to transform each 5 min epoch to the time–frequency domain by controlling for oversampling to reduce both computation and computer memory. The system is developed on EEG recordings from 54 neonates. Then the system is validated on a large unseen dataset of 338 h of EEG recordings from 91 neonates obtained across multiple international centres. Main results. The proposed EEG HIE-grading system achieves a leave-one-subject-out testing accuracy of 88.9% and kappa of 0.84 on the development dataset. Accuracy for the large unseen test dataset is 69.5% (95% confidence interval, CI: 65.3%–73.6%) and kappa of 0.54, which is a significant (

P
<
0.001

) improvement over a state-of-the-art feature-based method with an accuracy of 56.8% (95% CI: 51.4%–61.7%) and kappa of 0.39. Performance of the proposed system was unaffected when the number of channels in testing was reduced from 8 to 2—accuracy for the large validation dataset remained at 69.5% (95% CI: 65.5%–74.0%). Significance. The proposed system outperforms the state-of-the-art machine learning algorithms for EEG grade classification on a large multi-centre unseen dataset, indicating the potential to assist clinical decision making for neonates with HIE.
Effect of pH and Concentration on Biosorption Malachite Green and Rhodamine B Dyes using Banana Peel (Musa balbisiana Colla) as Biosorbent
Authors: Nasra E , Kurniawati D , Etika S B , Silvia R , Rahmatika A
Published: February 2021

All Biosorption of Malachite green and Rhodamine B dyes using banana peel (Musa balbisiana Colla) as a biosorbent has been carried out. The purpose of this study was to determine the effect of pH and concentration for biosorption of Malachite green and Rhodamine B by banana peel biosorbent (Musa balbisiana Colla). The method used is the batch method. The maximum wavelength of Malachite green is 618 nm and Rhodamine B 555 nm measured by the UV-Vis Spectrophotometer. The results showed that the optimum conditions for Malachite green adsorption occurred at pH 3, a concentration of 100 ppm 8,0662 mg/g. The optimum conditions for Rhodamine B adsorption occurred at pH 3, a concentration of 120 ppm 16,6614 mg/g. The adsorption isotherm of Malachite green with banana peel (Musa balbisiana Colla) biosorbent tends to follow the Freundlich isotherm with a determinant coefficient (R2) of 0.9996 and Rhodamine B 0,9884.
Synthesis of Conducting Polyaniline with Photopolymerization Method and Characterization
Authors: Joana Sury Siti Veren , Ulianas Alizar , Aini Syamsi
Published: February 2021

Polymers as they are known as molecules formed by repetition of small molecules known as monomers, polymers that are often used cannot conduct electricity. Along with the development of the polymer era at this time can also conduct electricity known as conductive polymers. One of the conductive polymers that attracts attention is polyaniline. Synthesis of polyaniline conductive polymers is carried out with aniline monomers mixed with Ethylene Glycol Dimetacrylate (EGDMA) as Crosslinkers, and Dimethoxy phenylacetophenone (DMPP) as the initiator. In this reasearch, the polymerization processed with the photopolymerization method with a mixture of Aniline (mL), DMPP (0.1 g), and EGDMA (mL) polymerized with photopolymer. The polymers obtained were tested for electrical conductivity, the composition which showed optimum conductivity was in the ratio of aniline and EGDMA 1 : 1 with the electrical conductivity of 0.001462 Ohm.cm−1. The conductivity measurement is done by using Four Point Probe (FPP) and other characterization measurements using FTIR (Fourier Transform Infrared) and TGA (Thermo-gravimetric Analysis).
Theoretical Modification of Pheophytin Using Cu, Ni, and Zn Atoms as a Sensitizer for Dye Sentized Solar Cell (DSSC)
Authors: Rahmatika Zidni , Sudarlin
Published: February 2021

Theoretical studies of pheophytin compound modified with Cu, Ni, and Zn atoms as a sensitizer for dye solar cell compound (DSSC) have been carried out based on HOMO-LUMO energy parameters, LUMO electron localization, spectra, light absorption efficiency, coupling constant, and sensitizer bond length with TiO2. This study aims to determine the parameters of bond length, spectra, molecular density, HOMO-LUMO energy, LHE, and ΔG injection of pheophytin α and β complexes using the central atoms of Cu, Ni, and Zn; and formulating the effect of adding central atoms of Cu, Ni and Zn on the characteristics α and β pheophytin photoelectric and determine the best modification capable of producing the best characteristics for pheophytin as a dye compound on the DSSC based on parameters of bond length, spectra, molecular density, energy HOMO-LUMO, LHE, and ΔG injection. The theoretical modification that used is DFT/B3LYP, the accuracy of the method used amounted to 89.27% and 96.09%. Based on the above parameters the best modification sensitizer for DSSC is Zn Pheophytin β> Zn Pheophytin α> Pheophytin β> Pheophytin α> Cu Pheophytin β> Ni Pheophytin α> Ni Pheophytin β> Cu Pheophytin α.
Biodégradation Bioplastic Based on Arrowroot Starch with Glycerol Plasticizer and ZnO Fillers
Authors: Maslahah Naela Ulul , Alisaputra Darmawan , Sedyadi Endaruji
Published: February 2021

Petroleum-based plastic packaging is very often found in everyday life. It is necessary to develop plastics made from polymers that can be decomposed naturally due to plastic waste problem. One of this polimer is starch. ZnO compounds are used as reinforcing bioplastics because bioplastics derived from starch are still brittle. This study aims to understand the biodegradability of arrowroot starch-based bioplastics with additional ZnO on soil media. This research was carried out in three stages: the production of arrowroot bioplastics with ZnO variations of 0%, 1%, 2%, 3%, 4%, and 5%, bioplastic characterization testing, and bioplastic biodegradation testing. Bioplastic’s characterization includes mechanical test (tensile strength, elongation, and young modulus), FTIR (Fourier Transform Infra-Red), and biodegradation testing of bioplastics carried out on soil pH 5 and pH 6. The result showed with variation 3% of ZnO produce are good mechanical and physical properties. Bioplastics produced tensile strength of 5,9966 MPa, elongation of 5,00045%, and young modulus of 118,1268 MPa. The biodegradation test results in soil pH 5 and pH 6, respectively, showed a decrease in the bioplastic mass up to 70% and 72% for 15 days.
Effect of Contact Time Adsorption of Rhodamine B, Methyl Orange and Methylene Blue Colours on Langsat Shell with Batch Methods
Authors: Kurniawati D , Bahrizal  , Sari T K , Adella F , Sy Salmariza
Published: February 2021

This study aims to determine the uptake capacity of langsat (Lansium domesticum) skin on the adsorption of dyes along with the contact time. Textile dyes are dyes which is harmful for the environment and living things. This textile industry waste can cause a decrease in water quality. When this carcinogenic dye enters the human body, it can lead to cancer. The process of these dyes adsorption use langsat skin samples. The components of langsat skin that can adsorb dyes are triterpenoids, saponins and flavonoids. This study uses a batch method by treating the contact time variations of several dyes. The results reveal that the biomass adsorption on rhodamine B, methyl orange, and methylene blue dyes were 11,578 mg/g, 3.8425 mg/g, 36,735 mg/g respectively and with optimum contact time of 60, 90 and 150 minutes, respectively.
Activation and Modification of Natural Silica for Anion Adsorbent
Authors: Oktavia Budhi , Tilla Mardho , Nasra Edi , Zainul Rahadian , Amin Muhammad
Published: February 2021

Silica is a mineral that is abundant in the earth’s surface. Silica has also been used in human civilization, such as making glass, electronic devices, adsorbents, fertilizers and others. Utilization of natural silica requires technology that is reliable enough so that impurities in the natural silica do not interfere with its use. In this study, tests have been carried out on natural silica, such as chemical and physical activation, reactions with certain reagents and also modifications made to the natural silica. The desired result is that natural silica can be used as an adsorben, ion exchange and also a stationary phase in the chromatography column. From this research a natural silica modification has been obtained using dimethylamine (DMA) to convert natural silica into positive charge so that it can be used to increase the absorption of some anions.
Modification of natural silica using dimethylamine and the application as a phosphate ion absorption
Authors: Sefriani Renti , Oktavia Budhi
Published: February 2021

Natural silica is one of the biggest mining products in Indonesia. Silica has the ability to absorb ions because it has two sites that actively activate silanol and siloxan groups that are accessible. Modifications were made to improve the ability of silica to perform impulses. Water ions if they have very high levels can release marine biota ecosystems, phosphate levels that are too high in waters can cause eutrophication, which is the higher levels of oxygen entering the sea. To reduce phosphate levels, phosphate adsorption is carried out using returned silica. The application of silica as a phosphate ion absorber was analyzed through measurements with a spectrophotometer. Adsorption of phosphate ions using pure silica has a maximum absorption of 0.2533 mg / g and silica after modification can adsorb a maximum phosphate ion of 1,1629 mg / g.
The Repellent Activity Test of Rosemary Leaf (Rosmarinus officinalis l) Essential Oil Gel Preparations Influence on Aedes aegypti Mosquito
Authors: Pratiwi Maharani Ayu Manik , Purwati
Published: February 2021

Rosemary leaf (Rosmarinus officinalis L) is a plant containing essential oils such as geraniol, linalool, sineol, and burneol. Essential oils used as insect repellent. This research is about repellent test of Rosemary (Rosmarinus officinalis L) gel for Aedes aegypti mosquito which aims to find out whether Rosemary (Rosmarinus officinalis L) can provide activity as a repellent preparation for Aedes aegypti mosquitoes. Rosemary essential oils (Rosmarinus officinalis L) are formulated in the form of gel preparation with various concentration namely 6%, 12%, 24% and use positive control repellent supply on the market that contains DEET. Volunteer completed that process over 4 days. The volunteer arms were inserted into the cage containing 50 mosquitoes which had been applied to the gel. The test is performed for 5 minutes every 4 hours, with 5 repetitions. The result shows that Rosemary essentials oil (Rosmarinus officinalis L) gel has a repellent activity againts Aedes aegypti mosquito on F3 24% concentration with 92,15% protection for 4 hours. The stability of gel preparation that organoleptic do not change the color, taste, smell, and shape. Homogeneous gel preparation, with pH, dissipation, and viscosity are suitable for 8 weeks at different temperatures (4°C, 25°C and 40°C), and do not irritation to the skin
Herbal plants from Riau Province as inhibitors of COVID-19 binding to ACE2 receptor by computer aided molecular design an in-silico method
Authors: Novianty R , Ananta S , Karim M A
Published: February 2021

Corona Virus Disease (COVID-19) is announced as pandemic by World Health Organization (WHO) since 11th March 2020. Riau Province has many herbal plants e.g. Cheilocostus specious, Euphorbia hirta l, Cassia torra, Bryophyllum pinnatum, Daniella ensifollia, and Ziziphus mauritiana that can cure many diseases and there is not report yet focusing on in-silico method using SARS-CoV-2 protease (PDB ID:6LU7). This study aims to reveal the potential of compounds contained in Riau Herbal Plants as anti SARS-CoV-2 through its binding to protein receptors. The study was conducted by molecular docking using Autodock Vina 1.5.6 and drug ability studies using Swiss ADME. The docking results of six active compounds including diosgenin, tannin, triterpenoid, chrysophanol, flavone and phytosterol were -8,3; -7,5; -7,5; -7,2; -6,9; -6,9 respectively against the affinity result for natural ligand of COVID-19 (-6,1). This result indicates the stronger bond between ACE2 and inhibitors because the affinity value of active compounds are higher than natural ligand of COVID-19. The SwissADME results show that triterpenoid and tannin violate some Lipinski Rules that make their drug-likeness is low. In general, all the active compounds were potential as candidates of SARS-CoV-2 antiviral but the most potential one is diosgenin in Cheilocostus specious.
Improving Students’ Critical Thinking Skills Through Student Worksheet Colloid Systems Based On Discovery Learning and Multiple Representations at Senior High School
Authors: Sari Zulfiati Rahmi Permata , Ulianas Alizar , Putra Ananda , Rahadian Z
Published: February 2021

Expansion study with the Plomp method has been carried out to produce student worksheet colloid systems based on discovery study and multiple representations to increase learners’ critical thinking skills. Sampling was done by apply the cluster purposive sampling technique. Study instruments apply is the problem sheet, a problem sheet in the form of sheet validity and practicalities, about objective and about the critically thinking skills. Outcome of the study showed that the resulting student worksheet shows the validity of which is very high (k = 0, 83). The outcome of the practicality of small group learner were very high k = 0.834. In the field test, the practicality of learner was very high (k = 0.815) while the practicality by the teacher was high (k = 0.74). Hypothesis test of study outcomes shows that there is a notable diverse between the study outcomes of experimental classroom learner and control classroom learner. The outcome of the critically thinking skills of hypothesis testing showed that there are notable diverse between the critically thinking skills of learners experimental and control classrooms. In addition, the study outcome show that student worksheet has met the criteria of being practical and impactive.
Learning Strategies Design to Accommodate Learning Styles, Initial Knowledge and Reduce The Differences of Scientific Reasoning and Argumentation Performance
Authors: Naj’iyah AL , Viyanti  , Suyatna Agus
Published: February 2021

The purpose of this research is to create learning strategies design that can be used to accommodate the differences of learning styles and initial knowledge so that it does not affect the differences of scientific reasoning accomplisment and students’ argumentation performance on hydropower and wind energy material. This research uses the ADDIE model (Analyze, Design, Develop, Implementate, and Evaluate), this article is just limited to the analysis and design stages. Needs analysis data was obtained through a questionnaire with students and high school teachers in Lampung as the respondents. The data analysis technique used a qualitative descriptive analysis. The results showed that teachers and students needed a learning strategy design that was able to improve scientific reasoning and argumentation performance and also reduce differences of learning styles and students’ initial knowledge. The learning strategy design which is developed to modify the PjBL syntax by integrating STEM which contains activities to solve problems, expand scientific literacy, design and create projects, and communicate it.
Challenges Towards The Implementation of ICT in Biology Learning: A Review Study
Authors: Yuliani Nurul Jannah , Mercuriani Ixora Sartika
Published: February 2021

The implementation of ICT in biology learning is not optimal because there are challenges that influence it. The purpose of this study is to determine the challenges of ICT implementation in biology learning. This research is research that uses a meta-analysis method. Sampling in this study uses a purposive sampling technique. Data collection is done by downloading written documents in Science Direct, Eric, Research Gate, Google Scholar, and NDLTD (Networked Digital Library on Thesis and Dissertations). The results showed there were several challenges towards the implementation of ICT in biology learning. The most common challenges found in the research results is the lack of ICT infrastructure with a percentage of 12.73%. The conclusions of this study are intended to be a reference to reduce the challenges that have been found so that the implementation of ICT in biology learning can be maximized in the future.
Validity and Practicality Level of Acid-Base Electronic Module Based on Structured Inquiry Containing Three Levels of Chemical Representation for Senior High School Student
Authors: Adriani D , Azhar M , Dj Latismad , Putra A , Yerimadesi
Published: February 2021

Acid-base is prerequisite material for studying the hydrolysis of salts and buffer solutions. This material is still difficult to understand for students. This study aims to reveal the level of validity and practicality of electronic module based on structured inquiry containing three levels of chemical representation. This research was Research and Development (R&D) using Plomp’s development model. The research instrument was a validaty and practicality questioannair. The e-module was validated by 4 chemistry lectures and 2 chemistry teachers. The practicality test was carried out on 2 chemistry teachers and 65 students grade XI of Senior High School. The data were analyzed using the Kappa Cohen formula. The result of the study showed the developed e-modul had a very high level of validation ( k = 0.86). The results of practicalities also showed a very high level, k=0.90 response of teachers, and k= 0.88 response of students. The e-module was valid and practically for in acid-base learning in Senior High School.
The development of a who wants to be a great biology games as a computer learning media based on human respiratory systems
Authors: Erlangga A , Nurcahyo H
Published: February 2021

This study aims to determine the quality and feasibility of learning media games who want to be a great computer-based biology. This research refers to the Research and development (R&D) procedure ADDIE development model is carried out through five stages, namely Analysis, Design, Development, Implementation and Evaluation. The instrument used in assessing the media was a questionnaire sheet that used a Likert measurement scale with descriptive analysis techniques. The results of research into the development of media games who want to be a great biology material on the human respiratory system obtain an average overall evaluation criteria of 60% of media experts, 87% of material experts, very good quality, 93% natural science teachers, very good quality, in class trials small based on an average rating of 74%, large class trials 84% with very good quality. Based on the results of the assessment and questionnaire responses of these students, the media games who want to be a great biology material of the human respiratory system can be categorized as very appropriate to be used as teaching media in schools. The results of the quality and feasibility of learning media are very good.
Development of STEM Integrated PBL-Based Student Worksheets in Energetic Materials of First-Year Students
Authors: Dotimineli A , Mawardi M
Published: February 2021

This study aims to produce STEM integrated problem-based student worksheets by looking at the validity, practicality and effectiveness of student worksheets in student learning activities.. This research method is a research development using the Plomp’s model. The design of this study was the design of one pretest-posttest group. The research subjects were students of chemistry majors Padang State University 2019. The research instruments used were validation sheets, practicality sheets and observation sheets of learning activities. This research shows that worksheet has a very high level of validity, very high level of practicality by students and high by the lecturer. The results showed that overall the average student learning activities were very high. This shows that the worksheets that has been produced can be used as one of the teaching materials in the learning process on energetic material.
Effectiveness of learning models for improving science process skills: A review study
Authors: Restiana  , Djukri
Published: February 2021

The 2013 curriculum implementation expects learning to produce output in the form of science process skills. Science process skills can be improved by applying appropriate learning models to learning activities. The research aims to analyze the types of learning models to improve science process skills. This research method is a meta-analysis by analyzing SINTA and SCOPUS indexed articles in the last 5 years qualitatively. Data analysis was performed by interpreting the same findings in the journal as a percentage. Research shows learning models that can improve science process skills include; practice based learning, guided-inquiry model, problem solving learning, guided-discovery model and project based learning. Of the various learning models, guided inquiry is more effective. Enhanced science process skills include basic skills and integrated skills.
Is Integrated Science Book with Ethno-STEM Approach Needed by Secondary School Students?
Authors: Muttaqiin Arief , Murtiani Murtiani , Yulkifli Yulkifli
Published: February 2021

STEM is one of the approaches in learning that involves several disciplines in studying a learning material. Through the STEM approach, students are required to be active in processing knowledge so as to achieve learning objectives optimally. Contextual science learning will be more meaningful if it has a close relationship with the surrounding context. This research develops integrated science teaching materials with the Ethno-STEM Approach through ADDIE (Analysis, Design, Development, Implementation, and Evaluation) methods. The research in this paper describes one phase of the ADDIE development method, namely the Analysis phase. An online questionnaire was given to 52 secondary school students to find out the need for integrated science teaching materials with the Ethno-STEM Approach based on the perspective of students as users.
Photonic pigments from white particles and black ink
Authors: Ge Ruoqing , Lin Tiantian , Lou Ge , Gao Weihong
Published: February 2021

In this paper, white silica nanoparticles with a diameter of 346 nm were prepared using the Stöber method. Mixed with different concentrations of black ink, the silica nanoparticles were self-assembled into structurally coloured photonic crystal films by gravity sedimentation at different temperature. The effects of temperature, the concentration of black ink and the viewing angle on the structural colour were investigated. The result showed structural colours can be produced by mixing white silica particles and commercial black ink, and this provided a novel strategy to make non-iridescent photonic pigments.
Low angle-dependent structural colours from redispersion of silica photonic crystal film
Authors: Jiaying Chen , Tiantian Lin , Yingqi Xu , Binjie Xin , Weihong Gao
Published: February 2021

Structural colour has attracted more and more attentions owing to its advantages of non-fading, environment friendly and non-toxic. According to its behaviour with respect to the viewing angle, there are two groups: iridescent (angle-dependent) and nor iridescent (angle-independent). However, many applications in textile and fashion require stable colour which means the colour shows low angle dependent. In this work, 314nm silica nanoparticle was synthesized by using a solvent varying technic which based on Stöber method. Iridescent structurally coloured film was directly self-assembled by gravity sedimentation of silica nanoparticle. Then, film was triturated and redispersed by ultrasonic dispersion process. Low angle-dependent structurally coloured film was then obtained by the redispersed silica nanoparticles. The effect of redispersion time on the structural colours was studied. The result shows that a twenty-minute redispersion gives a less bright but low angle-dependent structural colour film.
Extraction and Characterization of Keratin and Keratin Hydrogels from Wasted Rabbit Hair
Authors: Ge NaiWei , Zhang Yi , Zhang Hao , Cheng Ling , Shi Xueping
Published: February 2021

Fabrication and characterization of keratin hydrogel extracted from waste rabbit hair with the application of L-cysteine as reducing agent, using heating-and-cooling method at different pH and heating temperature, are the mainly focus of this study. The structural, morphological and chemical characteristic of different keratin samples-were compared. It is concluded that the recovery rate of keratin of waste rabbit hair had reached 61%, and the hydrogel was fabricated in the condition that the concentration of keratin powder was above 125mg/ml and the temperature was above 55 °C. Furthermore, rabbit hair keratin hydrogel could be potential applied in a diverse range of food, feed and wound dressing fields.
Preparation and Properties of Soybean Protein/Compound Carboxylic Acid Modified Cotton Fabric
Authors: Yong Wang , Ransheng Zuo , Yan Zhou , Xia Hong , Yunhui XU
Published: February 2021

For exploiting the ecological multifunctional cotton fabric, the citric acid, maleic acid and soybean protein were used to treat the cotton fabric so that the chemical bonding between soybean protein and cotton fabric was formed through the bridging function of multicarboxylic acids. Effects of treating conditions on the weight gain of cotton fabric were analyzed and the optimized process parameters were also obtained. The characterization of infrared spectra showed that the esterification crosslinking occurred between multicarboxylic acids and macromolecules of cotton fiber according to ring-anhydride mechanism, while the soybean protein was combined on cotton fabric with the amido bond by the bridging function of multicarboxylic acids. The breaking strength of soybean protein modified cotton fabric slightly decreased, whereas the anti-ultraviolet property of modified cotton fabric after cactus extract treatment improved remarkably.
Effect of calcium carbonate as pore-forming agent on properties of recycled polyethylene terephthalate masterbatch
Authors: Fang Ting , Li Jifeng , Yan Wenjing , Gu Diankuan , Du Zhaofang
Published: February 2021

In order to study the effect of calcium carbonate particles as pore-forming agent on properties of recycled polyethylene terephthalate(PET) masterbatch, pore-forming agent and PET derived from waste bottle were melt-blended and extruded, and then treated with acetic acid solution to obtain recycled PET masterbatch with micro-cavity structure. The influence of content of pore-forming agent and parameters of twin screw extruder for granulation process on the performance of recycled PET melt and masterbatch were analyzed. The results show that the intrinsic viscosity of recycled PET masterbatch is greatly affected by pore-forming agent and the parameters of the twin screw extruder for granulation process. When the mass ratio of polyester bottle flakes to virgin PET is 9:1 and 3 wt% of pore-forming agent added, with the temperature of the barrel 1~6 of the twin-screw extruder is 240°C, 244°C, 244°C, 244°C, 240°C, 240°C, respectively, and 150 r/min of screw speed, the intrinsic viscosity of the recycled PET masterbatch produced by twin screw extruder can reach 0.613 dL/g. The recycled PET masterbatch could be applied to PET fibers spinning. This method provides a new method for improving moisture regain for PET.
Research on the method of children’s body shape recognition based on big data technology of dressed human body
Authors: Jing Xiaoning
Published: February 2021

In this paper, a large number of children samples are collected to establish a database with detailed measurement index information. The data are analyzed and the figure of children are divided into three types. On the basis, the Naive Bayesian (NB) algorithm is applied to the study of figure discrimination, and the discriminant model is established. The discrimination of children figure is realized. At the same time, based on big data theory, the similar body of the test sample in the database is found through querying based on minimum difference algorithm. The unknown detailed measurement data of the test sample can be replaced by the similar body, to provide data support for the relevant application areas or dressed the human body that need to obtain detailed measurement information about the children.
The Visual Expression of lacquer Art and Ceramic Art on Clothing Accessories
Authors: Lin Xiao-hua , Liu Yun-Juan , Wei-Yin  , Zhen-Zheng
Published: February 2021

In clothing modeling, clothing accessories add the finishing touch, and have collection value. With the development of society, people have more demands for accessaries on the style, manufacturing methods, material decoration and other aspects; in the process of seeking innovation on apparel accessory design and craft, the two traditional craftwork of lacquer art and ceramic art is applied—the unique attributes, materials and craftsmanship of lacquer art, and the unique texture and shaping techniques of ceramic art; they create a unique visual beauty for the field of clothing accessories and open up new ideas.
The Elements and Sustainable Innovative Design of Button Knots in the Period of Republic of China
Authors: Qi Mao
Published: February 2021

Button knots craftsmanship is on the verge of extinction because it is not in line with modern life. This paper firstly applies literature review and field investigation to summarize the shapes, knot-applied parts and materials as three key elements of button knots in the period of Republic of China. Secondly, the paper innovatively designs the button knots from the perspective of sustainability. Furthermore, the paper analyzes the innovation application of button knots in modern design through peer review and questionnaire, which shows inheritance and innovation of button knots design. The shape innovation of button knots with the concept of inheriting Chinese traditional culture or caring for the environment, the innovation of knot-applied parts at the belt or chest of the clothing, the material innovation of button knots with natural materials such as cotton, linen, silk and wool or new environmentally friendly materials are all possible paths for future sustainable design in button knots.
The Study of Sustainable Strategy in Design of Protective Clothing and Accessories After Coronavirus (COVID-19) Outbreak
Authors: Li Jiehan , Liu Xiaogang
Published: February 2021

During the COVID-19 pandemic, the coronavirus frontline healthcare workers and the public have generated a great demand for personal protective equipment (PPE). According to the assessment of risk level, PPE such as medical masks, protective suits and face shields should be given priority to the healthcare workers and other medical first responders for use. The risk of the public to exposure is much lower than that of healthcare workers, and there is no need to wear such high-risk protective clothing and accessories. In the face of the general shortage of personal protective equipment due to increased demand, panic buying, hoarding and abuse, the public should look for alternative protection solutions when they are at home or going out. In the view of the problems above, this paper refers to the analysis of the current status of sustainable strategies in the design of protective clothing and accessories. It proposes a design method for the upcycle of abandoned clothing and daily objects. From the perspective of functional protection, demountable and modular design, it also provides methods and means for the sustainable optimal design of PPE, such as multi-functional protective hood, demountable design details, multi-pocket hidden design, internally seamed elastic strap structure, strengthened tightening design of the clothing opening. It is designed to help prevent the spread of transmissible viruses and bacteria, thereby protecting self and preventing others from infecting while alleviating the growing demand for PPE during the COVID-19 pandemic.
Preference Analysis of Traditional Handicraft Brocade Pattern in Fashion Art
Authors: Wang Weifan , Wei Jie , Wang Feng , Zhang Xiying , Ren Xiangfang
Published: February 2021

With the improvement of consumers’ income and aesthetic level, consumers’ demand for products is more and more personalized and has certain artistic quality. Therefore, it is particularly important to understand consumers’ preferences for product attributes, especially for clothing patterns, and to overlap different product portfolios for different market segments. Taking the students of Jiangnan University as an example and taking the pattern attributes of Brocade as the research object, this paper proposes two aspects, male, subjective and objective, through eye-tracking experiment and questionnaire survey. Research method of Brocade pattern Preference of traditional handicraft of women with different personalities. The proposed method is expected to provide a practical test for quarterly pattern planning. While protecting the inheritance of the pattern art of the traditional handicraft Brocade, it also puts forward the standardization of the development direction of the product pattern to help enterprises accurately locate the consumer groups, meet the market demand to the maximum extent, and help enterprises achieve the strategic goal of sustainable development of economic benefits.
Research on thermal comfort properties of Mongolian robes
Authors: Guo Xiao-Fang , Liu Hua-Xin
Published: February 2021

In order to reveal the thermal comfort performance of Mongolian robes, three types of Mongolian gowns were selected in this experiment, including four single gowns, three cotton gowns and two leather gowns. Three Mongolian robes were tested and analyzed in the form of single part and combination respectively by using the thermal manikin. The clothing area factors of two kinds of Mongolian robes were investigated by camera method. The relationship between the clothing area factor and the thermal insulation value of Mongolian robes was obtained by using SPSS. The approximate range of thermal resistance of Mongolian robes is obtained. It has important significance to improve the design of Mongolian robes and adapt to the local environment.
Research Status and Development of Clothing Mass Customization
Authors: Qian Jing , Zhao Mengmeng
Published: February 2021

With the advent of the era of big data, the production and design process of clothing is becoming more and more intelligent. This paper systematically introduces the development and evolution process of clothing customization according to the time clue. The research and application status of the key technologies in the process of clothing customization are described, including the intelligent generation technology of anthropometric clothing pattern and the virtual display technology of clothing. In addition, this paper also analyses two relatively advanced operation modes of mass customization of clothing and summarizes their advantages compared with the traditional sales mode. Finally, it summarizes the development trend of key technologies and operation modes of clothing customization.
Research in the field of smart wearables from 2006 to 2019: a bibliometric analysis and visualization based on citespace
Authors: Guo Tingting
Published: February 2021

Smart wearable devices have been developing rapidly in recent years. Based on the core database of Web of Science, a total of 4313 literatures from 2006 to 2019 were screened out to make a comprehensive review. Citespace was used for graph metrology analysis. The main findings are as follows: first, the most important developments occurred in China, the United States, and South Korea. China, in particular, has dominated the theory, with the most records and close cooperation with many countries or regions. Second, several universities and research institutions play important roles in collaborative networks, and the most influential central author is Zhonglin Wang. Thirdly, the research focus has changed from high concentration to diversification, and the existing research fields are extensive. Finally, through direct reference analysis, co-citation analysis and co-citation cluster evolution analysis, key literature, milestones in the history of theoretical development, research hotspots and trends are identified and visualized. Through sorting out the dynamic evolution process of knowledge cluster, this empirical study is of great significance to construct the prospect of intelligent wearable theory.
A Study on the Analysis and Prediction of the Anisotropy of Injection Molded GF/PA66
Authors: Xue Chen-yang , Chu Meng-fei , Yang Yu-qiu , Yang Jie , Hamada Hiroyuki
Published: February 2021

In recent years, short glass fiber reinforced PA66 composites (GF/PA) have been considered to be certain significant to promote the development of “automotive lightweight”. At current study, the mechanical properties of injection molded GF/PA were investigated both in axial and off-axis directions. In addition, the fiber volume fraction (vf ) and the residual length as well as the distribution of glass fiber (GF) after injection molding were investigated particularly to evaluate the interfacial property based on SEM observation and Kelly-Tyson model equation. It is found that the composites have a trend with a slight increase in the critical fiber length and decreased interfacial shear strength with an increase of vf.
Effects of the electric field distribution on electrospun PET fibers properties
Authors: Mu Xiaoqi , Zheng Yuansheng , Xin Binjie
Published: February 2021

Electric field plays a key role in producing required nanofibers in electrospinning. The applied voltage and working distance are the two main factors affects the electric field distribution during the electrospinning process. This work discussed the effects of these two parameters on the fiber fineness and performance in the electrospinning process, and also verified the results of numerical simulation through a series of experiments. The results showed that the larger the voltage applied to the spinneret is, the greater the electric force acting on the fibers is, which leads to a smaller fiber fineness and a preferable hydrophobic performance and strength. On the other hand, as the spinning distance increases, the smaller the force exerted on the fiber is, the larger the diameter is and the weaker hydrophobic performance is.
Preparation and Properties of Silk Fibroin Electro Hydrogels via a Low Voltage Electrostatic Field
Authors: Zhou Shuiqing , Wang Qiusheng , Chen Shixian , Hu Zhanao , Yan Shuqin , Zhang Qiang
Published: February 2021

Protein hydrogels is an important biomaterial for soft tissue repair in biomedical applications. However, the most extracellular matrixes are structured and ordered, the morphology of common hydrogels are of random network structures that impeded their applications in tissue engineering. In this study, silk fibroin hydrogels with different morphologies (i.e., microspheres, regularized beads, nano/micro fibers, intertwined networks, and multi-walls) were prepared under low voltage electrostatic fields by regulating the concentration of silk fibroin solution. Additionally, their stability can be regulated with further processing routes to satisfy the tailored requirements for different applications. Fourier transform infrared spectrometer (FTIR) and X-ray diffraction (XRD) provided evidence of the stability of silk fibroin electro materials was tuned by this method effectively. Therefore, these silk fibroin electro hydrogels with various morphologies, high orientation, and stability-regulatable properties provided a promising candidate for tissue engineering.
Poly(L-lactide-co-ε-caprolactone) Nanofiber Morphology Control and Influence of Properties
Authors: Wang Lei , Xin Binjie
Published: February 2021

Electrospinning has the advantages of large specific surface area and high porosity, and the nanofibers prepared by it can be widely used in environmental engineering, wound dressing, scaffold materials, biomedicine and other fields. Because gelatin is a biological material with biodegradable and good biocompatibility properties; while poly(L-lactide-co-ε-caprolactone) (PLCL) is a biological material with excellent mechanical properties and good biocompatibility. Therefore, the prepared PLCL/gelatin nanofiber membrane has good biocompatibility, and has minimal repellency to the body during clinical use, and is effective as a scaffold material. This article uses PLCL and gelatin as experimental materials to study the development and optimization of fiber scaffold materials. First introduce the existing tissue engineering scaffold materials, and then describe the basic principles of electrospinning technology. Used 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) as solvent to prepare PLCL/GE spinning solution and prepare nanofiber membranes with different total concentrations and different ratios of PLCL to GE, then used the electrospinning process as preparation method to spin nanofiber membranes separately, and the microstructure and hydrophobic performance parameters of the nanofibers were tested and characterized.
Fabricate Graphenne-based Textile Sensors and Their Applications
Authors: Song Jixia
Published: February 2021

Advanced material science, textile technology and electronic information technology have promoted the development of new functional textiles. Especially the emergence of wearable sensors in textile realizes the monitoring of human vital signs in daily life. Its combination with textile can undoubtedly help people to grasp the individual health situation and even the public health status in a timely, accurate and comprehensive manner. Graphene-based textile sensors and their applications were focused on in this paper. In addition, some technical problems on combining of wearable sensors and textile were summarized in the end.
Investigation on washing durability and thermal-moisture performance of Cu-Ni plated polyester fabric
Authors: Wen Zhu , Yun Su , Weifeng Yang , Shu Chen , Zijing Zhang , Jun Li
Published: February 2021

The washing durability and thermal-moisture comfortability severely impede the wide application of smart and functional textiles. A novel wearable electrical-conductive fabric (copper-nickel (Cu-Ni) composite plated polyester fabric) was proposed for providing outstanding washing durability and thermal-moisture comfortability. The basic properties, thermal insulation and evaporative resistance of Cu-Ni plated fabric were measured before and after standard washing (repeated 24 times). It was found that the surface coating after the washing showed slight and homogeneous wear with a mass loss of 11.6%, while the thickness of the fabric remained the same. Besides, the lightness and softness had no obvious changes. Air permeability decreased slightly but still reached 549.3 mm/s. The thermal insulation and evaporative resistance after the washing decreased 35% and 31% respectively, indicating that the thermal-moisture comfortability was improved. Therefore, the washing durability and the thermal-moisture performance of Cu-Ni plated fabric satisfies the requirement of wearer after the washing, which contributes to further application in smart and functional garments.
Ultra-light 3D fabric Reinforced Composite with Distinct Thermal Insulation and Superior Sound-absorbing Properties
Authors: Zheng Liangang , Aouraghe Mohamed Amine , Zhang Kun , Xu Fujun
Published: February 2021

Research on lightweight advanced materials that combine heat insulation and sound isolation becomes more attractive day by day. In this study, a 3D spacer structural Kevlar/polyimide composite (3DSSK/PIC) with light weight, heat insulation and sound absorbing properties was prepared by a combination of structural design, hand paste resin method and hot-pressing process. The fabricated 3DSSK/PIC possesses more than 80% of void as well as the ultra-light density (0.2 g/cm3). Consequently, the thermal insulation performance of 3DSSK/PIC (34%) is superior to that of polystyrene foam (adiabatic ratio ΔT ~20%) and similar to that of wood block (ΔT ~35%). Furthermore, the sound absorption coefficient of the 3DSSK/PIC is higher than 0.2 in the range of 600 ~ 2500 Hz, demonstrating its super sound absorption performance. In addition, compressive tests and SEM images were conducted to characterize the mechanical and structural performance. Therefore, the ultra-light 3D fabric reinforced composite with ultra-high thermal insulation and sound-absorbing properties justify a great potential in a wide variety of applications in the industry engineering, automobile, or aerospace.
Fabrication and Characterization of Polyaniline on Cotton Fabric via Two-Step in-situ Polymerization
Authors: Zhou Zhaoyi , Sun Jiayi
Published: February 2021

The conducting polyaniline (PANI) was fabricated with hydrochloric acid and ammonium persulfate (APS) as dopant and oxidant respectively on cotton fabric via two-step in-situ polymerization process. Effect of APS concentration on conductivity, EMI shielding effectiveness (SE) and weight gain rate of PANI coated on cotton fabric were investigated. FTIR spectra, crystallinity and morphology of resultant substrate were analyzed via attenuated total reflectance method (ATR), X-Ray diffraction (XRD), scanning electrical microscope (SEM) and optical microscope respectively. The result indicated that the optimum conductivity (0.5 kΩ) and SE (60%) of coated substrate were obtained at the concentration of APS 0.2 mol/L, and PANI had good combination with cotton substrate. The crystal structure of cotton fiber doped with PANI had no change with the increase of its crystallinity (up to (74.46±1)%).