916,617 results
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2. Characteristics and degradability of laser print waste paper fiber reinforced PLA resin matrix composite materials.
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Zhang, Xiaolin, Chang, Xing, Xu, Long, Huang, Maocai, Zuo, Liyuan, Cao, Jing, Wu, Yali, Li, Xin, Yang, Menghao, Gao, Limin, and Bo, Xiangfeng
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WASTE paper , *LASER printing , *WOOD-pulp , *LACTIC acid , *RENEWABLE natural resources - Abstract
As is well known, Laser print paper is usually produced with high‐quality chemical wood pulp. The laser print waste paper fiber (LPWF) is a high‐quality secondary fiber, and the research and development of high‐value utilization technology for laser print waste paper has attracted much attention in the field of renewable resource recycling. In this study, LPWF was used to reinforce poly(lactic acid) (PLA) composites in the field, and the composites were modified with bioenzyme, cationic polyacrylamide (CPAM), and nano‐silicon carbide (Nano‐SiC) to enhance the interfacial compatibility of LPWF/PLA composites. The study systematically investigated the effects of various modification methods on the characteristics and degradability of composites made from laser print waste paper fiber reinforced PLA resin matrix. The results showed that the mechanical properties of the composites treated with CPAM and Nano‐SiC were significantly improved, with tensile strengths of 54.3 and 59.5 MPa, and flexural strengths of 85.1 and 91.5 MPa, respectively, and the water absorption of the composites was reduced after the modification treatment, while the thermal stability was improved. The degradation performance of the composites in various water environments indicated that the inclusion of LPWF accelerated the water degradation rate of the composites, with the maximum degradation rate of the composite reaching 1.26% in 30 days. Highlights: Laser print waste paper is an excellent quality recyclable fiber resource.Four modifiers were used to modify LPWF/PLA composites.Characteristics and degradability of the composites were investigated.Significantly improved properties of CPAM and Nano‐SiC modified composites.The degradation rate of composites is increased by the addition of LPWF. [ABSTRACT FROM AUTHOR]
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- 2024
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3. Treatment of pulp and paper mill effluent through combined aerobic and anaerobic suspended fixed‐bed bioreactor.
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Pant, Apourv, Dwivedi, Anuj Kumar, Murasingh, Surajit, Singh, Deepak, Mayank, Muskan, and Ojha, Chandra Shekhar Prasad
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ATOMIC force microscopy techniques , *PAPER industry , *CHEMICAL oxygen demand , *SUSTAINABILITY , *PAPER pulp , *ULTRAFILTRATION - Abstract
This study explored using ultrafiltration (UF) membranes to treat pulp and paper mill wastewater, implementing a novel Taguchi experimental design to optimize operating conditions for pollutant removal and minimal membrane fouling. Researchers examined four factors: pH, temperature, transmembrane pressure, and volume reduction factor (VRF), each at three levels. Optimal conditions (pH 10, 25°C, 6 bar, VRF 3) led to a 35% reduction in flux due to fouling and high pollutant rejections: total hardness (83%), sulfate (97%), spectral absorption coefficient (SAC254) (95%), and chemical oxygen demand (COD) (89%). Conductivity had a lower rejection rate of 50%. Advanced imaging techniques like atomic force microscopy (AFM) and scanning electron microscopy (SEM) revealed reduced membrane fouling under these conditions. The Taguchi method effectively identified optimal conditions, significantly improving wastewater treatment efficiency and promoting environmental sustainability in the pulp and paper industry. Practitioner Points: This study optimized UF membrane conditions for pulp and paper mill wastewater, reducing fouling and enhancing pollutant removal, offering practical strategies for industrial treatment.AFM and SEM provided key insights into membrane fouling and mitigation, promoting real‐time diagnosis and optimization for enhanced treatment efficiency.Prioritizing anaerobic fixed‐bed systems in wastewater treatment is beneficial for achieving high COD removal efficiency. Optimizing hydraulic retention time (HRT) in these systems can further improve their overall effectiveness and sustainability. [ABSTRACT FROM AUTHOR]
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- 2024
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4. Recyclability of Paper‐Based Composites for Packaging Applications – The Role of Evaluation Methods.
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Kochersperger, Summer and Schabel, Samuel
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WASTE recycling , *PAPER recycling , *EVALUATION methodology , *SUSTAINABLE development , *RECYCLED paper - Abstract
Composites are pivotal in Europe's evolving packaging sector, which is undergoing changes due to circular and bioeconomy initiatives, which prioritize eco‐friendly packaging. Despite paper's high recycling rates, dynamic markets challenge recycling and circularity. Innovative paper‐based composites demand flexible recyclability assessments, which impacts product development. Recyclability methods are evolving as they struggle to match the dynamic changes occurring in the packaging sector. This article outlines paper recycling and compares global lab recyclability evaluation methods. [ABSTRACT FROM AUTHOR]
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- 2024
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5. High‐efficiency modification of PET by the low addition of a self‐assembled functional nanocellulose film prepared from waste paper.
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Lei, Wanqing, Hou, Jingyu, Fang, Changqing, Qin, Jianqin, Zhou, Xing, and Li, Lu
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PAPER recycling , *WASTE paper , *WASTE recycling , *POLYETHYLENE terephthalate , *PACKAGING waste , *PACKAGING recycling - Abstract
Polyethylene terephthalate (PET) is a conventional packaging material. Its modification has attracted immense attention in the industry and academia. Here, office waste paper, white cardboard waste, and waste corrugated paper were first employed as raw materials for cellulose nanocrystal (CNC) extraction by acid hydrolysis. Thereafter, CNC/PET composite films with various CNC additions were prepared via a self‐assembly technique. The results revealed that the CNCs formed a self‐assembled film on the PET surface via the synergistic effect of the complex interactions among the CNCs as well as between the CNCs and PET. Moreover, the CNCs improved the barrier property of PET and decreased the oxygen and water vapor transmittances of CNC/PET by 30.7% and 21.7%, respectively. Additionally, the coating of the PET surface with 0.2 wt.% CNCs extracted from the waste paper decreased the surface wettability of PET, exhibiting application potentials in the hydrophobic modification of polymers. This study realized waste paper recycling and provided a basis for constructing self‐assembled functional films on PET surfaces. The findings and insights of this study could exhibit application potentials in the fields of waste recycling and packaging materials. Highlights: A functional cellulose nanocrystal (CNC) film is prepared from waste paper.Self‐assembled CNC is coated on a PET surface to form a CNC/PET composite film.The synergistic interactions among CNCs and between CNC and PET modified PET.The low addition of CNCs realized the efficiency modification of PET.The study achieves waste paper recycling and high‐value utilization. [ABSTRACT FROM AUTHOR]
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- 2024
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6. Optimizing CO2 Adsorption/Desorption via the Coupling of Imidazole and Carbon Nanotubes Paper for Spontaneous CO2 Uptake from Ambient Air and Solar‐Driven Release.
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Li, Chujia, Cao, Xuebo, Liu, Guangchun, Huang, Lin, Chu, Mingming, Cheng, Ruobing, Wang, Aijun, and Xu, Zhen
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GREENHOUSE effect , *CARBON paper , *CARBON sequestration , *DENSITY functional theory , *CARBON nanotubes - Abstract
Direct air capture (DAC) is a sustainable technology to alleviate the greenhouse effect and a reliable pathway to acquire inexhaustible CO2 for the production of costly chemicals and energy products. Current DAC technologies with amine‐related sorbents rely on chemisorption, while they consume intensive energy for CO2 release and sorbent regeneration by heating. Developing new DAC processes with weak, reversible adsorption can substantially reduce the regeneration energies. Herein, the design of CO2 breathing paper (CBP) is demonstrated toward spontaneous CO2 extraction from ambient air and solar‐driven regeneration. The CBP is fabricated by coupling 2‐ethyl‐4‐methylimidazole to carbon nanotube paper on the basis of density functional theory calculations. At ambient conditions, CBP spontaneously captures atmospheric CO2 with a capacity of 0.14–1.75 mmol g–1 at 0–35 °C through non‐covalent electrostatic interaction. Upon exposure to sunlight, all adsorbed CO2 can be released and converted to concentrated gas for storage. Attractively, the efficiency of solar‐driven CO2 release is much higher than the traditional temperature‐swing method owing to the IR sensitivity of CO2. Besides the reversibility, the mild conditions also ensure the durability of CBP. These findings suggest that the CBP is a promising candidate for cost‐effective DAC. [ABSTRACT FROM AUTHOR]
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- 2024
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7. Optimized Fabrication of Flexible Paper‐Based PCBs with Pencil and Copper Electroplating.
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Srivastava, Vinit, Dubey, Shivam, Vaish, Rahul, and Rajpurohit, Bharat Singh
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FLEXIBLE printed circuits , *COPPER electrodes , *FILTER paper , *CARDBOARD , *ELECTROPLATING - Abstract
This research unveils a transformative methodology for fabricating flexible printed circuit boards (PCBs), focusing on the unique attributes of filter paper substrates. A meticulous parametric exploration scrutinizes critical aspects such as buckling resistance, charging current, plating time, and electrode configurations for copper electroplating. Key findings highlight the exceptional stability of copper electroplating on filter paper, exhibiting robust resistance against environmental variations and bending angles spanning +180° to −180°. Utilizing higher pencil grade material and maintaining a minimum 4 cm distance with a voltage range of 3 to 1.44 V ensures uniform, controlled plating without burning, optimizing the electrode area below 1 cm2 for enhanced practicality. The research underscores the longevity and durability of copper‐plated filter paper, with negligible resistance changes even after 1000 folds. Over a year, the shelf‐life assessment emphasizes the excellent stability of electroplated filter paper. Practical applications, including fully functional circuits and a bio‐degradable piano, underscore the versatility and real‐world feasibility of the proposed electroplating technique. [ABSTRACT FROM AUTHOR]
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- 2024
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8. Publication and collaboration anomalies in academic papers originating from a paper mill: Evidence from a Russia‐based paper mill.
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Abalkina, Anna
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PAPER mills ,PREDATORY publishing - Abstract
This study attempts to detect papers originating from the Russia‐based paper mill 'International Publisher' LLC. A total of 1,063 offers to purchase co‐authorship on a fraudulent papers published from 2019 to mid‐2022 on the 123mi.ru website were analysed. This study identifies at least 451 papers that are potentially linked to the paper mill, including one preprint, a duplication paper and 16 republications of papers erroneously published in hijacked journals. Evidence of suspicious provenance from the paper mill is provided: matches in title, number of co‐authorship slots, year of publication, country of the journal, country of a co‐authors and similarities of abstracts. These problematic papers are co‐authored by scholars from at least 39 countries and are submitted to both predatory and reputable journals. This study also demonstrates collaboration anomalies in questionable papers and examines indicators of the Russia‐based paper mill. The value of co‐authorship slots offered by 'International Publisher' LLC from 2019 to 2021 is estimated at $6.5 million. Since this study only analysed a single paper mill, it is likely that the number of papers with forged authorship is much higher. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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9. Synthesis and characterization of cellulose nanofibers from waste paper and their utilization in wood adhesion.
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Joshi, Garima and Chauhan, Shakti Singh
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WASTE paper , *WASTE recycling , *WOOD , *CELLULOSE synthase , *CHEMICAL processes , *NANOFIBERS - Abstract
Nanocellulose extraction from lignocellulosic materials is a highly chemical and energy‐intensive process as it requires the removal of lignin and hemicellulose. Writing paper is one of the processed materials that could be used as a raw material for the extraction of nanocellulose. In this work, cellulose nanofibers (CNFs) were synthesized from paper waste using TEMPO‐oxidation followed by high‐shear microfluidization. Scanning electron microscopy and atomic force microscopy confirmed the diameter of fibers in the nano‐range and a consistent zeta potential confirmed the stability of CNF suspension in water over a long time frame. Characterization of the CNFs using Fourier transform infrared spectroscopy indicated the presence of a carbonyl group due to the oxidation process. Thermogravimetric analysis and x‐ray diffraction revealed lower thermal stability and reduction in the crystallinity index of CNFs, as compared to pulp fibers. The obtained CNFs were used successfully as the sole binding agent in the preparation of fiberboards and also utilized as a reinforcing agent for polyvinyl acetate (PVAc) adhesive in the preparation of laminated veneer lumber (LVLs). The addition of CNFs in PVAc improved the glue shear strength indicating superior bonding characteristics and also increased the water resistance of the LVLs. Highlights: This work focused on cellulose nanofibers (CNFs) extraction from waste paperObtained CNFs form stable water suspension and have a diameter of less than 15 nmThermal stability and crystallinity index reduced after conversion to nanofibersCNFs form a complex network and act as a sole binder to make fiberboardsCNFs were utilized as a reinforcing agent for PVAc in preparation of LVLs [ABSTRACT FROM AUTHOR]
- Published
- 2024
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10. Utilizing de‐inked paper sludge for sustainable production of medium‐density fiberboard: A comprehensive study.
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Ashori, Alireza, Mahmoudi Najafi, Seyed Heydar, Heydari, Vahid, Besharatifar, Kamran, Sharifi Taskouh, Hamed, and Maghsoodi, Davood
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SUSTAINABILITY , *PAPER mill waste , *FIBERBOARD , *CRYSTAL whiskers , *WASTE recycling , *ADHESION , *MOISTURE - Abstract
This study investigated converting abundant paper mill waste, de‐inked paper sludge (DPS), into value‐added medium‐density fiberboard (MDF) panels. The objective was to repurpose this solid waste into a valuable material that aligns with the principles of a circular economy. Previous research has examined the addition of paper sludge to wood composites, but there is limited information on the specific incorporation of DPS into MDF production. This investigation offers new insights into this application. MDF panels were manufactured using hardwood fibers, with varying levels of urea‐formaldehyde resin (10% and 12% by weight) and different loadings of DPS (ranging from 0% to 50% by weight). X‐ray diffraction analysis revealed the presence of defective DPS fiber crystals. Contact angle measurements confirmed that DPS had poor wettability, corresponding to increased water absorption. As more DPS was incorporated, the mechanical properties of the panels progressively weakened due to defective fibers and poor adhesion between the fibers and the matrix. This was evident in scanning electron microscopy micrographs, which showed an escalation in interfacial flaws. Increasing the resin dosage noticeably improved the internal bond strength and reduced moisture uptake across all levels of DPS. However, at a DPS loading of 50%, the properties of the panels deteriorated by 36%–57% compared to the control MDF. Additionally, thickness swelling and water absorption increased significantly with higher DPS content, primarily due to the hydrophilic nature of the fibers. Based on optimization, it was determined that a DPS loading of 20% with a resin content of 12% provided the best balance between performance, waste utilization, cost, and moisture resistance. The reuse of abundant paper sludge supports the goals of a circular economy. However, strategies are required to tailor the processing methods and enable higher levels of recycled material without excessively compromising the key attributes of the product. Further research should focus on enhancing the quality of DPS and its compatibility with wood fibers and resin to enhance the performance of the composite material. Highlights: DPS from recycled paper mill assessed for MDF production with wood fibers and resinIncreasing DPS loading caused reductions in strength and adhesion of panelsWater absorption and thickness swelling markedly rose with more DPS additionIt was attributed to hydrophilic fibers and disrupted fiber‐matrix bondingOptimal formulation was 20% DPS loading and 12% resin content, balancing performance, waste utilization, and cost. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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11. Phosphate Esters: New Coating Materials for a Sustainable Release Paper.
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Abenghal, Lahbib and Brouillette, François
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PHOSPHATE esters , *PAPER recycling , *SURFACE energy , *ADHESIVE tape , *SURFACE forces , *SURFACE coatings , *PHOSPHATES - Abstract
Paper manufacturers have long used silicone as the coating agent for release liners. However, silicone‐based release paper is very difficult to recycle due to covalent bonds between silicone and fibers. The most suitable solution to overcome this problem is to use alternative coating materials with adequate release properties, provided that they can be easily repulped in typical paper recycling facilities. We proposed a coating agent composed of phosphate esters and dimethylacetamide in order to manufacture a recyclable and efficient release paper. Analyses carried out on coated sheets showed that phosphate esters allowed the formation of a surface with adequate release properties (low peeling force and surface free energy). In addition, the residual adhesion values obtained with phosphate esters confirmed that they are well anchored on the backing paper surface, thus limiting the mass transfer to the adhesive tape. [ABSTRACT FROM AUTHOR]
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- 2024
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12. Differential and Functional Response Time Item Analysis: An Application to Understanding Paper versus Digital Reading Processes.
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Cho, Sun‐Joo, Goodwin, Amanda, Naveiras, Matthew, and Salas, Jorge
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ELECTRONIC paper , *REACTION time , *FALSE positive error , *CONDITIONED response , *SMOOTHNESS of functions , *READING comprehension - Abstract
Despite the growing interest in incorporating response time data into item response models, there has been a lack of research investigating how the effect of speed on the probability of a correct response varies across different groups (e.g., experimental conditions) for various items (i.e., differential response time item analysis). Furthermore, previous research has shown a complex relationship between response time and accuracy, necessitating a functional analysis to understand the patterns that manifest from this relationship. In this study, response time data are incorporated into an item response model for two purposes: (a) to examine how individuals' speed within an experimental condition affects their response accuracy on an item, and (b) to detect the differences in individuals' speed between conditions in the presence of within‐condition effects. For these two purposes, by‐variable smooth functions are employed to model differential and functional response time effects by experimental condition for each item. This model is illustrated using an empirical data set to describe the effect of individuals' speed on their reading comprehension ability in two experimental conditions of reading medium (paper vs. digital) by item. A simulation study showed that the recovery of parameters and by‐variable smooth functions of response time was satisfactory, and that the type I error rate and power of the test for the by‐variable smooth function of response time were acceptable in conditions similar to the empirical data set. In addition, the proposed method correctly identified the range of response time where between‐condition differences in the effect of response time on the probability of a correct response were accurate. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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13. Oil blotting paper for formalin fixation increases endoscopic ultrasound‐guided tissue acquisition‐collected sample volumes on glass slides.
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Yamai, Takuo, Ikezawa, Kenji, Seiki, Yusuke, Watsuji, Ko, Kawamoto, Yasuharu, Hirao, Takeru, Daiku, Kazuma, Maeda, Shingo, Urabe, Makiko, Kai, Yugo, Takada, Ryoji, Mukai, Kaori, Nakabori, Tasuku, Uehara, Hiroyuki, Tsuzaki, Sayoko, Ryu, Ayumi, Tanada, Satoshi, Nagata, Shigenori, and Ohkawa, Kazuyoshi
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FORMALDEHYDE , *FILTER paper , *PETROLEUM , *PANCREATIC cancer , *OIL filters - Abstract
Objectives: Endoscopic ultrasound‐guided tissue acquisition (EUS‐TA) is used for pathological diagnosis and obtaining samples for molecular testing, facilitating the initiation of targeted therapies in patients with pancreatic cancer. However, samples obtained via EUS‐TA are often insufficient, requiring more efforts to improve sampling adequacy for molecular testing. Therefore, this study investigated the use of oil blotting paper for formalin fixation of samples obtained via EUS‐TA. Methods: This prospective study enrolled 42 patients who underwent EUS‐TA for pancreatic cancer between September 2020 and February 2022 at the Osaka International Cancer Institute. After a portion of each sample obtained via EUS‐TA was separated for routine histological evaluation, the residual samples were divided into filter paper and oil blotting paper groups for analysis. Accordingly, filter paper and oil blotting paper were used for the formalin fixation process. The total tissue, nuclear, and cytoplasm areas of each sample were quantitatively evaluated using virtual slides, and the specimen volume and histological diagnosis of each sample were evaluated by an expert pathologist. Results: All cases were cytologically diagnosed as adenocarcinoma. The area ratios of the total tissue, nuclear, and cytoplasmic portions were significantly larger in the oil blotting paper group than in the filter paper group. The frequency of cases with large amount of tumor cells was significantly higher in the oil blotting paper group (33.3%) than in the filter paper group (11.9%) (p = 0.035). Conclusions: Oil blotting paper can increase the sample volume obtained via EUS‐TA on glass slides and improve sampling adequacy for molecular testing. [ABSTRACT FROM AUTHOR]
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- 2024
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14. Lead–lag effect of research between conference papers and journal papers in data mining.
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Huang, Yue and Tian, Runyu
- Abstract
The examination of the lead–lag effect between different publication types, incorporating a temporal dimension, is very significant for assessing research. In this article, we introduce a novel framework to quantify the lead–lag effect between the research topics of conference papers and journal papers. We first identify research topics via the text‐embedding‐based topic modeling technique BERTopic, then extract the research topics of each time slice, construct and visualize the similarity matrix of topics to reveal the time‐lag direction and finally quantify the lead–lag effect by four proposed indicators, as well as by average influence topic similarity comparison maps. We conduct a detailed analysis of 19,166 bibliographic data for top conference papers and journal papers from 2015 to 2019 in the data mining field, calculate the similarity of topics obtained by BERTopic between each time slice divided by quarters. The results show that journal paper topics lag behind conference paper topics in the data mining field. The most significant lead–lag effect is 2.5 years, with approximately 33.45% of topics affected by this lag. The methodology presented here holds potential for broader application in the analysis of lead–lag effects across diverse research areas, offering valuable insights into the state of research development and informing policy decisions. This article is categorized under:Application Areas > Science and Technology [ABSTRACT FROM AUTHOR]
- Published
- 2024
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15. Integration of a Paper‐Based Supercapacitor and Flexible Perovskite Mini‐Module: Toward Self‐Powered Portable and Wearable Electronics.
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Lomeri, Hamed Javanbakht, Patra, Abhinandan, Polino, Giuseppina, Ali, Jazib, Jafarzadeh, Farshad, Rout, Chandra Sekhhar, Matteocci, Fabio, De Rossi, Francesca, and Brunetti, Francesca
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SOLAR energy conversion , *WEARABLE technology , *CARBON paper , *ELECTRONIC systems , *SUBSTRATES (Materials science) , *SOLAR technology - Abstract
An all‐flexible self‐powering unit, combining a flexible perovskite solar mini‐module for energy conversion and ultra‐flexible screen‐printed interdigitated carbon supercapacitors on paper for energy storage, is designed and developed. Through a hybrid bifurcated structure, the supercapacitors are connected in series and neatly layered on a paper substrate with the perovskite solar mini‐module strategically placed on top for seamless integration. The photosupercapacitor quickly reaches saturated voltage under various light intensities (1 sun, 1000 lx, 500 lx, and 200 lx) and displays a self‐discharge time of over 2 minutes. It delivers peak overall and storage efficiencies of 2.8% and 23%, respectively, and exhibits an extensive potential window of 3.8 V, making it a prominent choice for real time applications in electronic systems. In a nutshell, the inherent flexibility of both the solar module and the storage system, coupled with the space‐saving design, and the extensive potential window of the hybrid photosupercapacitor paves the way for implementation in portable and wearable electronics operating in indoor environments, ushering a new era of more versatile and adaptable energy solutions. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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16. Cold plasma‐induced N, Cu‐doping on carbon paper for high‐active catalytic electrode preparation.
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Yue, Xufeng, Xiang, Hongyu, Zhang, Peng, Shu, Song, Zhao, Yingxin, Zhang, Jiacheng, Liu, Jinwei, and Yu, Deping
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CARBON paper , *LOW temperature plasmas , *ELECTRODES , *COLLISIONS (Nuclear physics) , *PHYSISORPTION , *CARBON nanofibers , *PHYSIOLOGICAL effects of cold temperatures - Abstract
Carbon paper is commonly used for catalytic electrode preparation because of its high conductivity, corrosion resistance, and stability. However, traditional electrode preparation methods are inappropriate for highly hydrophobic carbon paper. In this paper, a high‐activity carbon paper catalytic electrode was prepared using multistrategies cold plasma modification to create atomic structural defects, dope N and Cu elements, and introduce oxygen‐containing functional groups. Analyses show that the bombardment of high‐energy particles caused atomic structural defects. Nitrogen and copper entered the carbon paper through plasma‐induced chemical recombination and physical adsorption, reaching 5.26% and 3.83%, respectively. Ethanol‐based plasma introduced oxygen‐containing functional groups to improve hydrophilicity. Finally, the plasma‐prepared electrode exhibited a reduction efficiency of 87.69% in an electrocatalytic nitrate reduction reaction. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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17. Flexible Thermoelectric BiSbTe/Carbon Paper/BiSbTe Sandwiches for Bimode Temperature‐Pressure Sensors.
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Shu, Min, He, Zhengxi, Zhu, Junjie, Ji, Yuru, Zhang, Xuefei, Zhang, Chuanrui, Chen, Mengran, and Zong, Peng‐an
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ELECTROMAGNETIC shielding , *ELECTRONIC systems , *CARBON paper , *BISMUTH telluride , *ELECTROMAGNETIC interference , *RESPIRATION - Abstract
Bimode temperature‐pressure sensors hold significant promise in personal health monitoring, wearables and robotic signal detection. Traditional bimode sensors typically combine two independent sensors, leading to fabrication complexity. This study develops a bimode temperature‐pressure sensor by using a facile electrodeposition method to create sandwiched BiSbTe/Carbon Paper/BiSbTe thin films and stacking them to a vertical structure. It demonstrates high sensitivity for temperature sensing, capable of detecting temperature difference as low as 1 K, and a rapid response time of 0.92 s due to a vertical structure. Utilizing its thermoelectric mechanism, the sensor achieves self‐powered sensing for finger touch and respiration states. Furthermore, its island‐like contact surface ensures high sensitivity with an extremely fast response time of 0.17 s, by rapidly changing contact resistance under pressure, allowing it to detect various human behaviors, including body movements and micro‐expressions. Beyond its sensing capabilities, the film excels in flexibility, electromagnetic interference shielding, and stability, presenting significant potential for integration into self‐powered electronic skin systems for health monitoring, wearables, artificial intelligence, and other electronic skin applications. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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18. Failure to deanonymize information in biomedical academic papers.
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Teixeira da Silva, Jaime A.
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- 2024
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19. Establishment of a measurement system to evaluate breast milk transfer of biological agents using dry filter paper: A multi‐institutional study.
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Saito, Jumpei, Yakuwa, Naho, Hosokawa, Yoshihiko, Hamada, Hiromi, Suzuki, Tomo, Sago, Haruhiko, Kaneko, Kayoko, Yamatani, Akimasa, and Murashima, Atsuko
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BREAST milk , *FILTER paper , *BREAST milk collection & preservation , *DRYING agents , *BREASTFEEDING , *ENZYME-linked immunosorbent assay , *GOLIMUMAB , *ABATACEPT - Abstract
Aims: Information on breastfeeding and safety of biologics in infants is lacking due to difficulties in case collection. We evaluated methods for determining the concentration of biologics in breast milk using a dry filter method that can simplify the collection, storage and transport of breast milk. Methods: To generate dried filter paper (DFP) samples, approximately 30 μL of breast milk was placed onto a Whatman 903 card and punched out. After extraction, the supernatant was measured using an enzyme‐linked immunosorbent assay. Three concentrations of each drug were prepared in liquid breast milk (LBM) and DFP samples to determine their stability up to 28 days after storage at 2–8°C or −20°C for LBM and 25 ± 5°C for DFP. LBM and DFP samples were also provided by nursing mothers using biologics during lactation, and drug concentrations in both samples were compared. The agreement between the two measurement methods was confirmed by Bland–Altman analysis. Results: Breast milk was provided by 12 mothers who used biologics (tocilizumab, abatacept, etanercept, golimumab, sarilumab and belimumab). The coefficients of variation for within‐run and between‐run precision for the six drugs were within 15% for both LBM and DFP, and accuracy was within 90%–110% of the quality controls. After 28 days, concentrations remained at more than 90%. The difference between the values obtained by each method was within the acceptable range of error (−12.1 to +16.6 ng/mL). Conclusions: A method for determining the concentration of biologics using DFP is expected to help improve pharmacotherapy for lactating women. [ABSTRACT FROM AUTHOR]
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- 2024
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20. Streptomyces spp. as biocatalyst sources in pulp and paper and textile industries: Biodegradation, bioconversion and valorization of waste.
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Cuebas‐Irizarry, Mara F. and Grunden, Amy M.
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PAPER industry , *COLOR removal in industrial waste purification , *BIOCONVERSION , *STREPTOMYCES , *ENZYMES , *WASTE paper , *COLOR removal (Sewage purification) - Abstract
Complex polymers represent a challenge for remediating environmental pollution and an opportunity for microbial‐catalysed conversion to generate valorized chemicals. Members of the genus Streptomyces are of interest because of their potential use in biotechnological applications. Their versatility makes them excellent sources of biocatalysts for environmentally responsible bioconversion, as they have a broad substrate range and are active over a wide range of pH and temperature. Most Streptomyces studies have focused on the isolation of strains, recombinant work and enzyme characterization for evaluating their potential for biotechnological application. This review discusses reports of Streptomyces‐based technologies for use in the textile and pulp‐milling industry and describes the challenges and recent advances aimed at achieving better biodegradation methods featuring these microbial catalysts. The principal points to be discussed are (1) Streptomyces' enzymes for use in dye decolorization and lignocellulosic biodegradation, (2) biotechnological processes for textile and pulp and paper waste treatment and (3) challenges and advances for textile and pulp and paper effluent treatment. [ABSTRACT FROM AUTHOR]
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- 2024
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21. Optimization of Amylose to Amylopectin Ratio and Degree of Substitution in Quaternized Starch as a Tool to Improve Paper Strength.
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Kang, Shaomin, Guo, Jiaqi, Makarov, Igor S., Khan, Mohammad Rizwan, Xiao, Huining, and Song, Junlong
- Abstract
Cationic starch serves as a prevalent wet‐end additive in the papermaking industry. Yet, the definitive effects of the ratio between the two principal components—amylose (AM) and amylopectin (AP)—and the degree of substitution (DS) on the mechanical strength enhancement of paper sheets remain incompletely understood. This study synthesizes a series of quaternized amylose (QAM) and quaternized amylopectin (QAP) with varying DS levels and blended these derivatives in diverse ratios. Subsequently, these mixtures are integrated into pulp suspensions to ascertain the DS and the AM‐to‐AP ratio that optimize paper strength. These results indicate that a QAM‐to‐QAP blend with a DS of 0.08 at a ratio of 2:8 yielded the most pronounced improvement in paper mechanical properties. This precise formulation significantly enhances tensile, burst, and tear strength indices, increasing by approximately 55.0%, 44.4%, and 78.4%, respectively, under the most favorable conditions and with an additive dosage of 1 wt.%. This investigation provides substantive and actionable knowledge for selecting starch additives in the wet‐end of papermaking, which can significantly augment the efficiency and efficacy of paper manufacturing processes. [ABSTRACT FROM AUTHOR]
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- 2024
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22. Flexible Phototransistors on Paper: Scalable Fabrication of PEDOT:PSS Devices Using a Pen Plotter.
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Sozen, Yigit, Ersu, Gülsüm, Pucher, Thomas, Quereda, Jorge, and Castellanos‐Gomez, Andres
- Abstract
Phototransistors are used in plenty of diverse applications such as optical communication systems, light sensors, imaging devices, and biomedical instruments for detecting and amplifying light signals. Herein, an approach for the large‐scale production of low‐cost and flexible phototransistors by integrating the inks of PEDOT:PSS, and graphite with paper, which serves as an ionic conductor material to gate the PEDOT:PSS channel, is proposed. The fabrication of the devices is carried out by sequentially depositing the PEDOT:PSS channel and graphite electrodes onto paper using a benchtop XY plotter. To characterize device‐to‐device variability, 200 devices are fabricated and their electrical and optical properties are statistically analyzed. By performing a detailed characterization on the optical properties under varying wavelength, power, and bias conditions, it is found that devices exhibit good photoresponse across a wide spectrum range. Moreover, devices maintain their photoactive characteristics even when subjected to high mechanical tensile strain, indicating the suitability of these paper‐supported devices for flexible electronic applications. Time and photocurrent magnitude can be tuned via gate voltages applied through the graphite‐based back‐gate configuration. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
23. Reprogrammable, Recyclable Origami Robots Controlled by Magnetic Fields.
- Author
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Chung, Gooyoon, Chae, Jeong Woo, Han, Dong-Soo, Won, Sang Min, and Park, Yoonseok
- Subjects
MAGNETIC actuators ,ROBOT control systems ,SOFT robotics ,PAPER arts ,ELECTRONIC circuits - Abstract
Origami, the art of paper folding, has emerged as a versatile technique for crafting intricate 3D structures from 2D sheets. Combined with the magnetic actuation, origami paper becomes the building blocks for cost‐effective, wirelessly controllable magnetic robots. Herein, a biodegradable magnetic paper with excellent formability and recyclability is developed, facilitating its convenient utilization and disposal. The programable magnetic paper, fabricated with specific magnetization and crease patterns, enables the transformation of 2D sheets into predetermined 3D structures. Leveraging the lightweight and pliable nature of paper‐based materials, exceptional control of origami robots with fast response is demonstrated, enabling a wide range of locomotion. Furthermore, the paper‐based approach enables the incorporation of electronic functionality into magnetic actuators. By introducing conductive nanoparticles into magnetic paper, an electrically conductive substance is created. Constructing electronic circuits and integrating electronic components onto the paper‐based printed circuit board platform enables the repairing of broken circuits inside complicated equipment and optical sensing of surrounding environments in conjunction with locomotive robots. The origami robots have a huge potential to be facilitated in diverse fields with various functions, demonstrating complex locomotion, and integrating chemical, optical, thermal, and mechanical sensors for monitoring environmental conditions in hard‐to‐reach locations. The array of possibilities holds significant promise for the widespread application of these origami magnetic robots across a diverse spectrum of research fields in soft robotics. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
24. X‐ray diffraction, scanning electronic microscopy, and Fourier transform infrared spectroscopy analysis of toilet paper.
- Author
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Müller, Marcelo, Basso, Rodrigo L. O., Delai, Robson M., and Hönnicke, Marcelo G.
- Subjects
FOURIER transform infrared spectroscopy ,TOILET paper ,X-ray diffraction ,MICROSCOPY - Abstract
At the shelf, highly bleached (soft and white) toilet papers samples of different brands and one grayish toilet paper sample of another brand have been selected for spectroscopy and X‐ray diffraction analysis, in order to figure out if they can present allergic components in their chemical composition. Traces of Ca, associated with the presence of CaC2O4H2O was found in one of the highly bleached toilet paper samples and in the grayish one. However, no traces of fungi were found in the scanning electronic microscopy images. A trial correlation between the chemical composition and mechanical properties of the tested toilet paper samples, surprisingly shows that the grayish toilet paper sample presents the highest softness. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
25. Diagnostic study of human papillomavirus DNA detection in cervical and vaginal samples using the filter paper card.
- Author
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Ramesan, Chiyancheri Koroth, Calvin, John Dickson, Thomas, Anitha, Fletcher, John, Kannangai, Rajesh, Abraham, Priya, and Peedicayil, Abraham
- Subjects
- *
HUMAN papillomavirus , *FILTER paper , *HUMAN experimentation - Abstract
Objective: To determine the accuracy of high‐risk human papillomavirus (HPV) DNA samples on filter paper in comparison to specimen transport medium (STM). Methods: This was a cross‐sectional diagnostic study of 42 consecutive women who were prospectively recruited. Each had self‐collected vaginal samples on filter paper, physician‐collected cervical samples on filter paper, and physician‐collected cervical samples in STM. HPV DNA testing was performed with a Hybrid Capture 2 system (Qiagen). Sensitivity, specificity, negative predictive value (NPV), positive predictive value (PPV), and agreement of filter paper methods with the standard procedure were calculated. Results: The overall prevalence of HPV in STM was 67.5%. Detection of HPV DNA in the physician‐collected cervical samples on filter paper had a sensitivity of 77.8%, a specificity of 100%, a PPV of 100%, and an NPV of 68.4%. The patient's self‐sampling on filter paper had a sensitivity of 66.7%, a specificity of 100%, a PPV of 100%, and an NPV of 59.1%. The agreement between STM method and physician‐collected sample on filter paper was substantial, (κ = 0.695, P < 0.001), while the agreement between STM and self‐collected samples on filter paper was moderate (κ = 0.565, P < 0.001). Most patients reported that self‐collection was acceptable (100%), painless (95%), and not embarrassing (95%). Conclusion: Filter paper, with dried self‐collected vaginal samples, can be used to detect high‐risk HPV with acceptable accuracy. Synopsis: Self‐collected vaginal samples on filter paper, to detect high‐risk human papillomavirus, is better for women, easier to transport to central laboratories, and has acceptable accuracy. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
26. Evaluating Properties of Green Concrete Produced Using Waste Marble Powder, Quarry Dust, and Paper Pulp.
- Author
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Disale, Anil, Nayak, Chittaranjan, Suryawanshi, Nagesh, Jadhav, Nitin, Jagdale, Umesh, Kate, Gunwant, Thakare, Sunil, Pandey, Shri Prakash, Sharma, Prakhakar, and Saxena, Amit
- Subjects
- *
PAPER pulp , *CONCRETE , *INDUSTRIAL wastes , *ALKALI-aggregate reactions , *CONSTRUCTION materials , *DETERIORATION of concrete - Abstract
Industrial waste locks are used as raw materials to reduce harmful effects on the environment and improve environmental performance. Marble clay powder can be used as a filling aid and can fill voids in concrete structures. This article will show you how to use a maximum natural sand alternative in concrete with marble powder and quarry dust. The challenge of the 21st century is to change to a new form that can support the natural system. This necessitates a radical rethinking of how to give the community infrastructure and housing. Making a concerted effort to develop novel, innovative, and alternative construction materials may be necessary. Jungles of concrete around cause's impact on the Environment and it would result in climate change. Mankind must avoid the use of things that are detrimental to the environment. So in this paper, it is decided to address the issue by adopting the use of the green concrete concept which is environmentally friendly. Green concrete is concrete made up using industrial wastes such as marble powder, quarry dust, wood ash, paper pulp, etc. Green concrete, which is capable of sustainable development, helps to reduce the consumption of natural resources, energy use, and environmental pollution. Green concrete is more cost‐effective than ordinary concrete and reduces the cost of resultant concrete by 14%–20%. It is also observed that the alkali‐aggregate reaction and sulfate attack resistance of concrete are both significantly improved. Green concrete is a useful tool for lowering environmental pollution and enhancing concrete's resistance to harsh conditions. All stages of infrastructure construction and rehabilitation will follow this trend of using new cement and techniques. Green concrete's adaptability and its performance derivatives will meet a variety of future needs. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
27. Exhibit 11: ADEA Position Papers.
- Published
- 2024
- Full Text
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28. Cutting edge document examination: The physical fit of machine‐cut edges of paper.
- Author
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Musgrave, Nicola R., Thorne, Oliver T. S., and Howells, Alix J.
- Subjects
- *
SUCCESS , *LABORATORIES , *FORECASTING - Abstract
This technical note describes in detail a method for associating individual sheets of blank A4 white paper from the same ream by the physical fit of machine‐cut edges. A large‐scale laboratory trial involving ~700 sheets of paper from 24 different reams (plus one spoiled sample), and more than 20,000 potential physical fits, correctly associated and sequenced 219 pairs of sheets together with a 100% empirical success rate and no false associations. The edge profile of each short machine‐cut end of a sheet of A4 paper allows us to physically fit sheets of paper from the same ream to each other and use this to predict the sequence of sheets in a set of documents. In a real‐life scenario, it may now be possible to detect the substitution or addition of a sheet in a multipage document, link documents from different sources to each other or to a common source of paper (e.g. to paper from a seized printer or from an accused's address) or to date documents. The study provides data for the application of this method in forensic casework and supports the practitioner when forming conclusions in this type of case. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
29. Identification of document paper using hybrid feature extraction.
- Author
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Lee, Joong, Kim, Hongseok, Yook, Simyub, and Kang, Tae‐Yi
- Subjects
CONVOLUTIONAL neural networks ,IDENTIFICATION documents ,CRIMINAL procedure ,FORGERY ,FEATURE extraction ,PAPER products - Abstract
Document forgery is a significant issue in Korea, with around ten thousand cases reported every year. Analyzing paper plays a crucial role in examining questionable documents such as marketable securities and contracts, which can aid in solving criminal cases of document forgery. Paper analysis can also provide essential insights in other types of criminal cases, serving as an important clue for solving cases such as the source of a blackmail letter. The papermaking process generates distinct forming fabric marks and formations, which are critical features for paper classification. These characteristics are observable under transmitted light and are created by the forming fabric pattern and the distribution of pulp fibers, respectively. In this study, we propose a novel approach for paper identification based on hybrid features. This method combines texture features extracted from images converted using the gray‐level co‐occurrence matrix (GLCM) approach and a convolutional neural network (CNN), with another set of features extracted by the CNN using the same images as input. We applied the proposed method to classification tasks for seven major paper brands available in the Korean market, achieving an accuracy of 97.66%. The results confirm the applicability of this method for visually inspecting paper products and demonstrate its potential for assisting in solving criminal cases involving document forgery. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
30. Granulocytes and mast cells in AllergoOncology-Bridging allergy to cancer: An EAACI position paper.
- Author
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Pascal M, Bax HJ, Bergmann C, Bianchini R, Castells M, Chauhan J, De Las Vecillas L, Hartmann K, Álvarez EI, Jappe U, Jimenez-Rodriguez TW, Knol E, Levi-Schaffer F, Mayorga C, Poli A, Redegeld F, Santos AF, Jensen-Jarolim E, and Karagiannis SN
- Subjects
- Humans, Tumor Microenvironment immunology, Animals, Disease Susceptibility, Mast Cells immunology, Mast Cells metabolism, Neoplasms immunology, Neoplasms therapy, Hypersensitivity immunology, Hypersensitivity therapy, Hypersensitivity etiology, Granulocytes immunology, Granulocytes metabolism
- Abstract
Derived from the myeloid lineage, granulocytes, including basophils, eosinophils, and neutrophils, along with mast cells, play important, often disparate, roles across the allergic disease spectrum. While these cells and their mediators are commonly associated with allergic inflammation, they also exhibit several functions either promoting or restricting tumor growth. In this Position Paper we discuss common granulocyte and mast cell features relating to immunomodulatory functions in allergy and in cancer. We highlight key mechanisms which may inform cancer treatment and propose pertinent areas for future research. We suggest areas where understanding the communication between granulocytes, mast cells, and the tumor microenvironment, will be crucial for identifying immune mechanisms that may be harnessed to counteract tumor development. For example, a comprehensive understanding of allergic and immune factors driving distinct neutrophil states and those mechanisms that link mast cells with immunotherapy resistance, might enable targeted manipulation of specific subpopulations, leading to precision immunotherapy in cancer. We recommend specific areas of investigation in AllergoOncology and knowledge exchange across disease contexts to uncover pertinent reciprocal functions in allergy and cancer and allow therapeutic manipulation of these powerful cell populations. These will help address the unmet needs in stratifying and managing patients with allergic diseases and cancer., (© 2024 The Author(s). Allergy published by European Academy of Allergy and Clinical Immunology and John Wiley & Sons Ltd.)
- Published
- 2024
- Full Text
- View/download PDF
31. Direct Ink Writing of Nanocellulose and PEDOT:PSS for Flexible Electronic Patterned and Supercapacitor Papers.
- Author
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Lay, Makara, Say, Mehmet Girayhan, and Engquist, Isak
- Subjects
- *
ELECTRONIC paper , *CARBON nanofibers , *ORGANIC electronics , *FLEXIBLE electronics , *CLEAN energy , *ELECTRIC currents , *SUPERCAPACITORS - Abstract
Printed electronic paper identifies its interest in flexible organic electronics and sustainable and clean energy applications because of its straightforward production method, cost‐effectiveness, and positive environmental impact. However, current limitations include restricted material thickness and the use of supporting substrate for printing. Here, 2D and 3D electronic patterned paper are fabricated from direct ink writing (DIW) nanocellulose and PEDOT:PSS‐based materials using syringe deposition and 3D printing. The conductor patterns are integrated in the bulk of the paper, while non‐conductive sections are used as support to form free‐standing paper. The strong interface between the patterns of electronic patterned paper gives mechanical stability for practical handling. The conductive paper‐based electrode has 202 S cm−1 and is capable of handling electric current up to 0.7 A, which can be used for high‐power devices. Printed supercapacitor papers show high specific energy of 4.05 Wh kg−1, specific power of 4615 W kg−1 at 0.06 A g−1, and capacitance retention above 95% after 2000 cycles. The new design structure of electronic patterned papers presents a solution for additive manufacturing of paper‐based composites for supercapacitors, wearable electronics, or sensors for smart packaging. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
32. Laser‐Structured Graphite Paper Hybrid Anode with Selective Lithiophilic Grooves for Controlled Lithium Metal Deposition.
- Author
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Wang, Gang, Mu, Yongbiao, Gu, Huicun, Li, Hui, Ren, Haixiang, Zeng, Lin, and Xu, Shaolin
- Subjects
- *
CORPORATE bonds , *DENDRITIC crystals , *LASER ablation , *SOLID electrolytes , *ENERGY density - Abstract
Lithium (Li) metal anodes offer significantly higher theoretical capacity than graphite anodes but face challenges in terms of stability and safety due to dendrite growth and solid electrolyte interphase (SEI) instability. To address these issues, a hybrid Li‐ion/metal anode is proposed to enhance cycling stability by selectively forming lithiated graphite, thereby promoting uniform Li deposition. By laser‐processing commercial graphite paper (GP), a laser‐ablated graphite paper (LGP) anode featuring grooved structures enriched with oxygen‐containing functional groups is fabricated. These structures expose electrochemically active edge planes that facilitate Li‐ion adsorption and intercalation in graphite flakes. The lithophilic functional groups and lithiated graphite (LiC6) inside grooves promote selective Li metal deposition, inhibit dendrite growth, and enhance energy density. The Li||LGP half‐cell operated stably over 300 cycles at 1 mA cm−2 with a Coulombic efficiency over 99%. LGP||LiFePO4 full‐cell maintained a capacity of 157 mAh g−1 after 150 cycles at 0.5 C, compared to 137.5 mAh g−1 for GP||LiFePO4 cells. The LGP full‐cell also shows a capacity of 104 mAh g−1 with 91% capacity retention after 500 cycles at 5 C, whereas the GP full‐cell declined rapidly. These results highlight the potential of the approach for improving the cycling stability and performance of Li metal batteries. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
33. Advances in Paper‐Based Photodetectors: Fabrications, Performances, and Applications.
- Author
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Tang, Xing, Yang, Jingwen, Duan, Zaihua, Bu, Yichen, Yuan, Zhen, Jiang, Yadong, and Tai, Huiling
- Subjects
- *
PHOTODETECTORS , *SPECTRAL sensitivity , *BIODEGRADABLE materials , *ELECTRONIC materials , *WEARABLE technology , *PHOTOELECTRICITY - Abstract
With the development of wearable electronic technology, the flexible photodetectors have attracted widespread attention, and it is of great significance to develop flexible, eco‐friendly and low‐cost photodetectors. Cellulose paper, as a flexible, eco‐friendly, low‐cost, lightweight, customizable, biodegradable and renewable material, has received enthusiastic attention and rapid development in the field of photodetectors in recent years. In this review, it is focused on the research progress of paper‐based (PB) photodetectors. First, the fabrication methods of PB photodetectors are discussed, including electrode materials and optoelectronic functional materials. Then, this review systematically summarizes and analyzes the achievements of PB photodetectors on photoelectric performances (spectral response range, responsivity, detectivity, response/recovery times and on/off ratio) and flexibility characteristics (bending angle and bending cycle). In terms of key performance indicators, the PB photodetectors reported so far can detect multiple wavelengths of light from UV to near‐infrared with the maximum detectivity of 1013 Jones. In addition, the various applications of PB photodetectors is reviewed and discussed. Finally, it is look forward to the future development of PB photodetectors in terms of fabrication methods, photoelectric and flexible performances, and applications. With this review, it is hope that it will promoted the future development of PB photodetectors. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
34. Recent Research Progress of Paper‐Based Supercapacitors Based on Cellulose.
- Author
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Xiong, Chuanyin, Wang, Tianxu, Han, Jing, Zhang, Zhao, and Ni, Yonghao
- Subjects
SUPERCAPACITORS ,CELLULOSE ,ENERGY storage ,CLEAN energy ,SUSTAINABLE development - Abstract
In recent years, paper‐based functional materials have received extensive attention in the field of energy storage due to their advantages of rich and adjustable porous network structure and good flexibility. As an important energy storage device, paper‐based supercapacitors have important application prospects in many fields and have also received extensive attention from researchers in recent years. At present, researchers have modified and regulated paper‐based materials by different means such as structural design and material composition to enhance their electrochemical storage capacity. The development of paper‐based supercapacitors provides an important direction for the development of green and sustainable energy. Therefore, it is of great significance to summarize the relevant work of paper‐based supercapacitors for their rapid development and application. In this review, the recent research progress of paper‐based supercapacitors based on cellulose was summarized in terms of various cellulose‐based composites, preparation skills, and electrochemical performance. Finally, some opinions on the problems in the development of this field and the future development trend were proposed. It is hoped that this review can provide valuable references and ideas for the rapid development of paper‐based energy storage devices. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
35. A comparative study of the conference papers of mainland China's double first‐class universities.
- Author
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Zhang, Guijie and Wei, Fangfang
- Subjects
- *
CONFERENCE papers , *COMPARATIVE studies , *CITATION indexes , *DATABASES , *PSYCHIATRY education - Abstract
This paper analyses the conference papers published by double first‐class universities from mainland China between 2006 and 2019. The main findings are as follows: first, the number of conference papers from different double first‐class universities varied greatly, with the annual numbers of papers in the China Proceedings of Conferences Full‐text Database (CPCD) and in the Conference Proceedings Citation Index (CPCI) fluctuating during this period. Second, most of the top 10 disciplines of the papers in the CPCD and CPCI were in the natural sciences, with only two in the social sciences. The CPCD papers and CPCI papers had some overlap in their disciplinary distributions. Third, the CPCD and CPCI papers differed little in total number, with the number of CPCI papers being slightly higher than the number of CPCD papers. With the introduction of new regulations from the Ministry of Science and Technology (MST), there will likely be an increase in the number of Chinese‐language conference papers in the future. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
36. Chemical and Imaging Analysis of Questioned Document Paper by FTIR, ICP and Video Spectral Comparator (VSC) for Forensic Discrimination.
- Author
-
Kizil, Soner
- Subjects
- *
ANALYTICAL chemistry , *IMAGE analysis , *COMPARATOR circuits , *LIGHT sources , *CRIMINAL procedure - Abstract
Forensic document examination has been considered one of the most important fields in the forensic science. For this, a quick, effective, and cheap techniques for evaluation of forensic evidence is highly required. This study explores the comparison of A4 document paper by chemical and physical analysis. 16 of white A4 paper from different brands were analyzed by FTIR for investigation of structural characteristics. Video Spectral Comparator 8000 has been used to compare the A4 papers under different light source. The inorganic filler composition in the paper is also explored by ICP‐OES. The calcium carbonate content in document papers play a discriminant role which found to be between 16.02 % and 35.54 %. Also, water contact angle has been utilized in order to examine the surface of paper which is generally related to the inorganic filler and other additives. The WCA results ranged between 83° and 111° that enable quick and easy way to compare A4 document papers. The experimental results have demonstrated that besides FTIR methods, other methods such as ICP‐OES for elemental composition, WCA for wetting test, VSC for visualization under different light of source could have been applied for comparison of document papers in case of criminal cases. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
37. A Flexible Reduced Graphene Oxide‐based Paper for Supercapattery Design: Effect of Polyindole Thin Films and Zinc Oxide Nanoparticles.
- Author
-
Mollamehmetoğlu, Esra Atalay and Alanyalıoğlu, Murat
- Subjects
- *
ZINC oxide thin films , *ZINC oxide , *NANOPARTICLES , *GRAPHENE , *ENERGY density , *FLEXIBLE electronics - Abstract
Flexible graphene‐based paper electrodes (FGPEs) are a new class of study and the research on this electrode material has been carried out for approximately ten years. FGPEs have many advantages compared to classical solid electrodes such as being flexible, foldable, adaptable to flexible electronics, being cut, easily shaped, and effective and adjustable modification. In this work, the applicability of FGPEs modified with polyindole (PIN) thin films and zinc oxide nanoparticles (ZnO‐NPs) to energy‐storage systems as a supercapattery design is presented, and especially the limitations of ZnO‐NPs for energy‐storage applications are revealed to inform researchers working for a similar purpose. Capacitance calculations have been performed using both cyclic voltammetry (CV) and galvanostatic charge‐discharge (GCD) experiments. It was observed that the rGO/PIN paper demonstrated almost 30 times more energy‐storage capacity than that of the rGO/PIN/ZnO paper due to the electrochemical instability of ZnO‐NPs on the flexible electrode platform at the applied potential region in 1.0 M HClO4 solution. The rGO/PIN paper with a highly flexible property exhibited an energy density of 74.5 W h cm−2 and a power density of 2258 W cm−2 at a current density of 2.2 mA cm−2, revealing hopeful results for future modular and flexible approaches. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
38. Modified paper‐based substrates fabricated via electrostatic attraction of gold nanospheres for non‐destructive detection of pesticides based on surface‐enhanced Raman spectroscopy.
- Author
-
Zhang, Yuxin, Qiu, Huixin, Huang, Yiqun, Miao, Junjian, and Lai, Keqiang
- Subjects
SERS spectroscopy ,PESTICIDES ,ORGANOPHOSPHORUS pesticides ,FILTER paper ,CHEMICAL industry ,GOLD - Abstract
BACKGROUND: Flexible surface‐enhanced Raman spectroscopy (SERS) substrates such as paper‐based substrates show great potential for rapid detection of residual chemicals on food surfaces. However, controlling the density and distribution of metallic nanoparticles adsorbed on the paper is still challenging. RESULTS: The amount of gold (Au) nanospheres (51 ± 4 nm) attached on the filter paper modified with 3‐aminopropyltriethoxysilane (APTES) was tunable, increasing as the level of APTES (2.5–15.0 g kg−1) applied for paper modification increased. Moreover, the Au nanospheres were relative evenly distributed on the filter paper modified with 2.5–10.0 g kg−1of APTES, which resulted in excellent intra‐ and inter‐reproducibility of SERS signals for pesticides including thiram, diquat dibromide, and paraquat dichloride (relative standard deviation = 2.2–10.1%). The modified paper‐based substrate could be used to detect as low as 0.05–0.2 mg L−1 of pesticides in standard solutions, and as low as 5–20 ng cm−2 of residual pesticides on apple skins with minimum sample pretreatment. CONCLUSION: This paper‐based substrate with tunable feature for the density and distribution of nanoparticles is applicable for rapid SERS detection of residual pesticides in fruits and vegetables. © 2023 Society of Chemical Industry. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
39. 3.3: Fabricating Self‐Powered E‐paper on Paper Substrates and Driven by Triboelectric Nanogenerator Module.
- Author
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Liu, Guangyou, Gu, Yifan, Zhong, Min, He, Zhi, Wang, Li, Qin, Zong, Hou, Tingting, Pu, Xiong, and Yang, Bo-ru
- Subjects
INDIUM tin oxide ,ELECTRONIC paper ,GLASS-reinforced plastics ,INTERNET of things - Abstract
The electronic paper (E‐paper) has the advantages of low power consumption, flexibility, small form factor, and eye‐friendliness. However, most E‐paper substrates are made by indium tin oxide (ITO) glasses or plastic substrates, which are hard to degrade in the natural environment. Our previous work introduced a self‐powered E‐paper (SPEP) integrated with triboelectric nanogenerator (TENG). Here, a paper‐based SPEP was further demonstrated, driven by a TENG module without any other power module. By combining the self‐powered driving mode and paper substrates, this work showed novel possibilities for E‐paper devices, which provided great potential in future Internet of things (IoT) displays. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
40. Conductive Korean Traditional Paper (Hanji) Coupled with Ag Nanowire for Functional Electronic Paper Windows in Hanok.
- Author
-
Kim, Yong Jun, Choi, Seo‐Yun, Shin, Hak, and Kim, Han‐Ki
- Subjects
- *
ELECTRONIC paper , *TOUCH screens , *STAPHYLOCOCCUS aureus , *ELECTROMAGNETIC interference , *KLEBSIELLA pneumoniae , *LAMINATED composite beams , *ELECTROMAGNETIC shielding , *NANOWIRES , *WOODEN beams - Abstract
Korean traditional paper known as Hanji is coupled with Ag nanowires (NWs) to be used as multi‐functional paper windows in wooden flame doors of a traditional Korean house (Hanok). The Ag NW is uniformly embedded in a handmade Hanji, consisting of multiple laminated sheets formed through ssangbal filtering up and spray method. The combination demonstrates a low sheet resistance of 28 Ohm square−1 because of a percolating network structure of Ag NWs, which is apt for interconnectors and electrodes. Owing to the flexibility of the Hanji and Ag NWs, outstanding mechanical flexibility, apt for curved or flexible electronic paper windows, is observed. To further examine the potential of the multi‐functional electronic paper window, anti‐bacterial and electromagnetic interference shield properties of the Hanji are also investigated. It is noted that the functional Hanji sterilizes 99.9% of staphylococcus aureus and Klebsiella pneumonia and shows 15 dB (12–18 GHz) shielding efficiency due to the existence of the metallic Ag NWs network. In addition, successful operation of Hanji‐based interconnectors, thin film heaters, and touch panels demonstrates that the Hanji‐based electronic paper window can be used as a device‐integrated paper window in traditional Hanok or oriental traditional houses. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
41. All‐Paper‐Based, Flexible, and Bio‐Degradable Pressure Sensor with High Moisture Tolerance and Breathability Through Conformally Surface Coating.
- Author
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Li, Ao, Xu, Jun, Zhou, Shengtao, Zhang, Zhaohui, Cao, Daxian, Wang, Bin, Gao, Wenhua, Zhang, Wei, and Zhang, Fengshan
- Subjects
- *
PRESSURE sensors , *CHEMICAL vapor deposition , *SUSTAINABILITY , *WEARABLE technology , *PATIENT monitoring - Abstract
Highlighted with bio‐degradability, paper‐based flexible pressure sensors receive significant attention in the field of wearable devices for a sustainable future. However, it remains a challenge to possess considerable sensing performance in high humidity and underwater environments, because its structure rapidly breaks down after the hydrophilic cellulose absorbs water. In this study, a facile chemical vapor deposition method is employed to conformally coat a thin hydrophobic layer onto the cellulose fibers, resulting in an encapsulating paper with high moisture tolerance. The well‐maintained porous structure reserves the superior breathability of the paper. A micro‐convex‐structured sensor layer impregnated with MXene serves as the sensing layer. As a result, an all‐paper‐based pressure sensor with high moisture tolerance and breathability is fabricated. This sensor features a broad sensing range (0–60 kPa), acceptable sensitivities (39.58 kPa−1 (0–1.01 kPa), 11.95 kPa−1 (1.01–60 kPa)), a low detection limit of ≈2.8 Pa, response and recovery time (93 and 69 ms), reliable hydrophobic breathability, and excellent repeatability (10 000 cycles). Moreover, this sensor can be safely worn on human skin and can monitor physiological signals in real‐time in different environments (including air, humid environments, and even underwater), providing a reliable, economical, and environmentally friendly solution for wearable technology. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
42. Perspectives on Photocatalytic Paper‐Based Batteries Fueled by Alcohol.
- Author
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Zanata, Cinthia R., Zapata, Maximiliano J. M., Wender, Heberton, and Martins, Cauê A.
- Subjects
- *
ALCOHOL oxidation , *ALCOHOL as fuel , *ENERGY consumption , *ETHYLENE glycol , *FUEL cells - Abstract
Amid growing energy demands, innovative solutions are essential to power a variety of devices. Paper‐based microfluidic fuel cells (PμFCs), powered by eco‐friendly alcohols derived from biomass, present a promising option. While lightweight and disposable, they mainly rely on costly noble‐metal catalysts for high efficiency. In this context, the concept of photo paper batteries (pPBs), utilizing affordable sunlight‐activated semiconductors to drive alcohol oxidation on paper, opens the possibility to disposable and affordable energy solutions. Our review highlights recent progress in PμFCs fueled by alcohols like methanol, ethanol, ethylene glycol, and glycerol. We explore semiconductor advancements driving anodic reactions and envision the potential of pPBs. To achieve practical pPBs, refining semiconductors, electrode design, and microfluidic engineering are pivotal. This short review highlights the transformative potential of pPBs and beckons researchers to partake in shaping this new field. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
43. Efficient Protection of Paper‐Based Cultural Relics via In Situ Synthesis of Carbon Dots/Layered Double Hydroxide.
- Author
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Zhao, Jinchan, Zhang, Mingliang, Wang, Sinong, Cui, Zhongjie, Dai, Zhenyu, He, Haiyang, Qin, Shuaitao, Mei, Shiliang, Zhang, Wanlu, and Guo, Ruiqian
- Subjects
- *
LAYERED double hydroxides , *BLUE light , *ACIDIFICATION , *HYDROLYSIS , *RELICS - Abstract
Paper‐based cultural relics are of great value and have been facing irreversible damage caused by multiple factors, among which acid hydrolysis and ultraviolet photodegradation are the main processes leading to paper deterioration. Paper protection highly relies on a limited range of materials with single functions, and the design of new materials that ensure long‐term safety and efficiency by simultaneously addressing the issues of acidification and UV degradation in paper is highly desired. In this study, the introduction of carbon dots (CDs)‐enhanced layered double hydroxides (LDH) 0D/2D nanohybrids (CDs/Mg‐Al LDH) is proposed as novel dual‐functional materials for paper protection against UV degradation and acidification. Through a CDs‐assisted in situ growth strategy, CDs/Mg‐Al LDH with ultrathin thickness (≈9.1 nm) and CDs‐intercalated structure are achieved. The CDs/Mg‐Al LDH nanohybrids demonstrate high dispersibility, strong UV absorption, and remarkable photostability, resulting in protected‐paper with decelerated acidification, oxidation, and yellowing degradation processes under both accelerated UV‐aging and dry‐heat conditions. Additionally, the protected‐paper can emit uniform blue light under 365 nm UV excitation allows for easy identification of the distributed CDs/Mg‐Al LDH within the paper, marking a unique and practical feature. This research paces a new direction for the protection of paper‐based relics with emerging carbon dots‐based 0D/2D nanomaterials. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
44. Advanced imaging for earlier diagnosis and morbidity prevention in multiple myeloma: A British Society of Haematology and UK Myeloma Society Good Practice Paper.
- Author
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Kaiser M, Goh V, Stern S, Spencer N, Rabin N, Ramasamy K, Lawless S, Soutar R, Ashcroft J, Pratt G, Messiou C, and Bygrave C
- Subjects
- Humans, United Kingdom epidemiology, Early Detection of Cancer methods, Diagnostic Imaging methods, Diagnostic Imaging standards, Early Diagnosis, Morbidity, Hematology standards, Multiple Myeloma diagnosis, Multiple Myeloma diagnostic imaging
- Abstract
This Good Practice Paper provides recommendations for the use of advanced imaging for earlier diagnosis and morbidity prevention in multiple myeloma. It describes how advanced imaging contributes to optimal healthcare resource utilisation by in newly diagnosed and relapsed myeloma, and provides a perspective on future directions of myeloma imaging, including machine learning assisted reporting., (© 2024 British Society for Haematology and John Wiley & Sons Ltd.)
- Published
- 2024
- Full Text
- View/download PDF
45. EADV Task Force Pruritus White Paper on chronic pruritus and chronic prurigo: Current challenges and future solutions.
- Author
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Ständer S, Pereira MP, Zeidler C, Legat FJ, Misery L, Lönndahl L, Bewley AP, Brenaut E, Bobko S, Elberling J, Evers AWM, Garcovich S, Gieler U, Gonçalo M, Kupfer J, Lambert J, Lvov A, Metz M, Michenko A, Papadavid E, Reich A, Savk E, Schneider G, Schut C, Serra-Baldrich E, Ständer HF, Szepietowski JC, Wallengren J, Weisshaar E, and Augustin M
- Subjects
- Humans, Advisory Committees, Chronic Disease therapy, Prurigo etiology, Prurigo therapy, Pruritus therapy, Pruritus etiology
- Abstract
Chronic pruritus (CP) is frequent in general medicine and the most common complaint in general dermatology. The prevalence of CP is expected to rise in the future due to the ageing population. The clinical presentation, underlying aetiology and treatment strategy of CP are heterogeneous. Also, individual treatment aims and physical, psychic and economic burdens of patients might vary. Chronic prurigo (CPG) is the most severe disease in the chronic pruritus spectrum, being associated with long-standing scratch-induced skin lesions and a therapy refractory itch-scratch-cycle. It is thus important to raise disease awareness for CP and CPG in the general public and among decision-makers in the health system. Further, there is a need to support a rational clinical framework to optimize both diagnostics and therapeutics. Currently, there is still a shortcoming regarding approved therapies and understanding CP/CPG as severe medical conditions. Therefore, the EADV Task Force Pruritus decided to publish this white paper based on several consensus meetings. The group consented on the following goals: (a) ensure that CP is recognized as a serious condition, (b) increase public awareness and understanding of CP and CPG as chronic and burdensome diseases that can greatly affect a person's quality of life, (c) clarify that in most cases CP and CPG are non-communicable and not caused by a psychiatric disease, (d) improve the support and treatment given to patients with CP to help them manage their disease and (e) publicize existing therapies including current guidelines. We aim to point to necessary improvements in access and quality of care directed to decision-makers in health policy, among payers and administrations as well as in practical care., (© 2024 The Authors. Journal of the European Academy of Dermatology and Venereology published by John Wiley & Sons Ltd on behalf of European Academy of Dermatology and Venereology.)
- Published
- 2024
- Full Text
- View/download PDF
46. Diagnosis and initial treatment of transplant-eligible high-risk myeloma patients: A British Society for Haematology/UK Myeloma Society Good Practice Paper.
- Author
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Kaiser M, Pratt G, Bygrave C, Bowles K, Stern S, and Jenner M
- Subjects
- Humans, Disease Management, Hematopoietic Stem Cell Transplantation standards, United Kingdom, Multiple Myeloma therapy, Multiple Myeloma diagnosis
- Abstract
This Good Practice Paper provides recommendations for the diagnosis and initial management of transplant-eligible high-risk myeloma patients. It describes recent updates to the genetic diagnostics of high-risk myeloma and provides recommendations for treatment on the basis of recent prospective clinical trial evidence., (© 2024 British Society for Haematology and John Wiley & Sons Ltd.)
- Published
- 2024
- Full Text
- View/download PDF
47. Rapid on‐site detection of persistent organic pollutants using multiwalled carbon nanotube–modified paper spray ionization and a miniature mass spectrometer.
- Author
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Guo, Xiangyu, Li, Junfang, Bai, Hua, and Ma, Qiang
- Subjects
- *
PERSISTENT pollutants , *CARBON paper , *POLYCYCLIC aromatic hydrocarbons , *CARBON nanotubes , *MASS spectrometers , *ION traps , *ENVIRONMENTAL protection - Abstract
Rationale: Rapid on‐site detection of persistent organic pollutants (POP) is highly desirable for environmental protection. Methods: Herein, a rapid on‐site analytical workflow was developed for the investigation of polycyclic aromatic hydrocarbons and perfluorinated compounds using multiwalled carbon nanotube–modified paper spray ionization (PSI) coupled with a miniature ion trap mass spectrometer. Critical parameters regarding PSI and miniature mass spectrometry analysis were optimized. Results: The analytical performance of the developed method was evaluated under optimized conditions, obtaining a short analysis duration of less than 1 min, sufficient linearity with correlation coefficients greater than 0.99, acceptable recovery rates of 93.1%–105.8% with relative standard deviations of between 3.5% and 10.3%, and reasonable sensitivity with limits of detection and quantitation of 2–200 and 5–500 μg/L, respectively. Conclusions: Considering these aspects, it was concluded that the present approach demonstrated a promising solution for rapid on‐site detection of emerging POPs. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
48. Chemically Oxidized Carbon Paper as a Free‐Standing Electrode for Supercapacitor: An Insight into Surface and Diffusion Contribution.
- Author
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Waseem, Sadiya, Dubey, Prashant, Singh, Mandeep, Sundriyal, Shashank, and Maheshwari, Priyanka H.
- Subjects
- *
CARBON paper , *ENERGY density , *SUPERCAPACITOR electrodes , *POTASSIUM dichromate , *POWER density , *RAMAN spectroscopy - Abstract
Carbon paper has been synthesized by paper making process followed by composite formation, and further chemically oxidized by immersing into a mixture of sulphuric acid and potassium dichromate to be used as an electrode for supercapacitor applications. XRD and Raman spectra were used to analyze the structure, and the defects in the samples respectively, in due course of oxidation. FESEM images revealed the morphology of oxidized samples to be rougher, which contributes towards increased active sites for reaction. The sample (COCP‐60) optimized via electrochemical studies, was further tested in various electrolytes to study the electrode/electrolyte interaction. It delivered a highest areal capacitance of 6.02 F/cm2 (231.5 F/g) in acidic electrolyte at a current density of 5 mA/cm2 (0.19 A/g). This findings were further corroborated by surface and diffusion contribution studies wherein it was found that diffusion is more profound with acidic electrolyte. The supercapacitor device fabricated with COCP‐60 electrode delivered an energy density of 0.41 Wh/cm2 at 2.83 W/cm2 power density with coulombic efficiency of 98 %, and cyclic stability of ∼90 % for over 5000 cycles. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
49. An Antioxidant, Reusable Laser Printed and Recycled Cork Paper Packaging.
- Author
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Zhai, Wenxiang, Zhong, Yijing, Xu, Min, Wei, Xinli, Cai, Liping, Xia, Changlei, and Wei, Yunzhao
- Subjects
- *
FOOD waste recycling , *LIQUID waste , *FOOD packaging , *RECYCLED paper , *FOOD waste - Abstract
In the realm of food waste recycling, industrial suberoligneous by‐products like cork and peels, pose a challenge for value‐added conversion, primarily due to their intricate structures. This study introduces an innovative approach by utilizing recycled cork as a prime example of repurposing food waste to create a reusable and durable packaging paper. Notably, the manufacturing process of this cork‐based paper avoids the generation of waste liquids from lignin removal, effectively alleviating concerns related to liquid waste pollution. The resulting packaging paper demonstrates remarkable printability, readability, and erasability while offering reusability. Its performance can be fine‐tuned through pH value adjustments. Moreover, this packaging paper exhibits outstanding antioxidative properties and barrier properties, seamlessly integrating superb UV‐blocking proficiency and heightened visible transparency, rendering it highly appealing for sustainable food packaging applications. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
50. AI‐Driven Learning and Regeneration of Analog Circuit Designs From Academic Papers.
- Author
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Xiong, Wenxiao, Meng, Xiangyu, Tao, Yuwen, and Ling, Peng
- Abstract
ABSTRACT This paper presents an artificial intelligence (AI)‐based framework designed for learning and regenerating analog circuits from academic papers. The framework comprises four distinct modules: circuit extractor, table extractor, text extractor, and simulation executor. The circuit extractor module utilizes deep learning object detection to identify devices and their associated textual descriptions while extracting interconnections between devices. The table extractor module handles textual and image‐based tables, extracting device parameters, and simulation data. The text extractor module leverages optical character recognition (OCR) and AI models to extract supplementary information. The simulation executor employs this information to conduct simulations and optimize circuit performance. In our experiments, our method effectively extracts multimodal circuit design information, achieving an average accuracy of up to 97% in target detection within the circuit extractor module. The improved performance during the simulation process further validates the effectiveness of our framework. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
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