scholarly journals High-performance cellulosic filament fibers prepared via dry-jet wet spinning from ionic liquids

Cellulose ◽  
2021 ◽  
Author(s):  
Marc P. Vocht ◽  
Ronald Beyer ◽  
Patricija Thomasic ◽  
Alexandra Müller ◽  
Antje Ota ◽  
...  
Keyword(s):  
High Performance ◽  
Continuous Process ◽  
Degree Of Polymerization ◽  
Alkali Resistance ◽  
Wet Spinning ◽  
The Novel ◽  
Cellulosic Fibers ◽  
Novel Approach ◽  
First Time

AbstractWe report on a new process for the spinning of high-performance cellulosic fibers. For the first time, cellulose has been dissolved in the ionic liquid (IL) 1-ethyl-3-methylimidazolium octanoate ([C2C1im][Oc]) via a thin film evaporator in a continuous process. Compared to other ILs, [C2C1im][Oc] shows no signs of hydrolysis with water. For dope preparation the degree of polymerization of the pulp was adjusted by electron beam irradiation and determined by viscosimetry. In addition, the quality of the pulp was evaluated by means of alkali resistance. Endless filament fibers have been spun using dry-jet wet spinning and an extruder instead of a spinning pump, which significantly increases productivity. By this approach, more than 1000 m of continuous multifilament fibers have been spun. The novel approach allows for preparing cellulose fibers with high Young's modulus (33 GPa) and unprecedented high tensile strengths up to 45 cN/tex. The high performance of the obtained fibers provides a promising outlook for their application as replacement material for rayon-based tire cord fibers.

scholarly journals Changes in Plasma Phospholipid Metabolism Are Associated with Clinical Manifestations of Systemic Sclerosis

Diagnostics ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2116
Author(s):  
Marija Geroldinger-Simić ◽  
Thomas Bögl ◽  
Markus Himmelsbach ◽  
Norbert Sepp ◽  
Wolfgang Buchberger
Keyword(s):  
Systemic Sclerosis ◽  
High Performance ◽  
Clinical Manifestations ◽  
Plasma Phospholipid ◽  
Phospholipid Metabolism ◽  
Internal Organs ◽  
New Biomarkers ◽  
First Time

Systemic sclerosis (SSc) is an autoimmune disease with fibrosis of the skin and/or internal organs, causing a decrease in quality of life and survival. There is no causative therapy, and the pathophysiology of the SSc remains unclear. Studies showed that lipid metabolism was relevant for autoimmune diseases, but little is known about the role of lipids in SSc. In the present study, we sought to explore the phospholipid profile of SSc by using the lipidomics approach. We also aimed to analyze lipidomics results for different clinical manifestations of SSc. Experiments were performed using high-performance liquid chromatography coupled to mass spectrometry for the lipidomic profiling of plasma samples from patients with SSc. Our study showed, for the first time, significant changes in the level of phospholipids such as plasmalogens and sphingomyelins from the plasma of SSc patients as compared to controls. Phosphatidylcholine plasmalogens species and sphingomyelins were significantly increased in SSc patients as compared to controls. Our results also demonstrated a significant association of changes in the metabolism of phospholipids (phosphatidylcholine and phosphatidylethanolamine plasmalogens species and sphingomyelins) with different clinical manifestations of SSc. Further lipidomic studies might lead to the detection of lipids as new biomarkers or therapeutic targets of SSc.

An Efficient and Effective Approach to Developing Engineering E-Training Courses

2011 ◽  
pp. 26-39
Author(s):  
Judy C.R. Tseng ◽  
Wen-Ling Tsai ◽  
Gwo-Jen Hwang ◽  
Po-Han Wu
Keyword(s):  
New Technologies ◽  
Experimental Results ◽  
Traditional Learning ◽  
The Novel ◽  
Learning Materials ◽  
Challenging Issue ◽  
Novel Approach ◽  
Training Courses ◽  
Oriented Approach

In developing traditional learning materials, quality is the key issue to be considered. However, for high technical e-training courses, not only the quality of the learning materials but also the efficiency of developing the courses needs to be taken into consideration. It is a challenging issue for experienced engineers to develop up-to-date e-training courses for inexperienced engineers before further new technologies are proposed. To cope with these problems, a concept relationship-oriented approach is proposed in this paper. A system for developing e-training courses has been implemented based on the novel approach. Experimental results showed that the novel approach can significantly shorten the time needed for developing e-training courses, such that engineers can receive up-to-date technologies in time.

scholarly journals Porous Alginate Scaffolds Assembled Using Vaterite CaCO3 Crystals

Micromachines ◽  
2019 ◽  
Vol 10 (6) ◽  
pp. 357 ◽  
Author(s):  
Alena Sergeeva ◽  
Anna S. Vikulina ◽  
Dmitry Volodkin
Keyword(s):  
Tissue Engineering ◽  
Internal Structure ◽  
High Performance ◽  
Drug Testing ◽  
Chemical Properties ◽  
Bioactive Molecules ◽  
The Novel ◽  
Novel Approach ◽  
Alginate Hydrogels ◽  
High Level

Formulation of multifunctional biopolymer-based scaffolds is one of the major focuses in modern tissue engineering and regenerative medicine. Besides proper mechanical/chemical properties, an ideal scaffold should: (i) possess a well-tuned porous internal structure for cell seeding/growth and (ii) host bioactive molecules to be protected against biodegradation and presented to cells when required. Alginate hydrogels were extensively developed to serve as scaffolds, and recent advances in the hydrogel formulation demonstrate their applicability as “ideal” soft scaffolds. This review focuses on advanced porous alginate scaffolds (PAS) fabricated using hard templating on vaterite CaCO3 crystals. These novel tailor-made soft structures can be prepared at physiologically relevant conditions offering a high level of control over their internal structure and high performance for loading/release of bioactive macromolecules. The novel approach to assemble PAS is compared with traditional methods used for fabrication of porous alginate hydrogels. Finally, future perspectives and applications of PAS for advanced cell culture, tissue engineering, and drug testing are discussed.

A unified approach to Stefan’s problem for spheres and cylinders

1980 ◽  
Vol 373 (1752) ◽  
pp. 131-147 ◽  
Keyword(s):  
Latent Heat ◽  
Asymptotic Theory ◽  
Cylindrical Body ◽  
The Novel ◽  
Sensible Heat ◽  
Unified Approach ◽  
Fusion Temperature ◽  
Molten Material ◽  
Novel Approach ◽  
First Time

The problem of the inward solidification of a spherical or cylindrical body of molten material, initially at its uniform fusion temperature, when the outside is suddenly cooled, is considered. A complete asymptotic theory is developed for the case when the parameter A, which measures the ratio of latent heat to sensible heat of the substance, is large. Uniformly valid approximations to the solution are found everywhere, for all time t*, up to the instant t* = t* e ,at which the material is completely frozen. Though many of the results have been obtained previously, the treatment of the final freezing of the central core as t* -> t* e is new. For the cylinder, the novel approach enables asymptotic solutions to be obtained, when t* t* e , for the first time.

scholarly journals PRF Selection in Formation-Flying SAR: Experimental Verification on Sentinel-1 Monostatic Repeat-Pass Data

2019 ◽  
Vol 12 (1) ◽  
pp. 29 ◽  
Author(s):  
Maria Daniela Graziano ◽  
Alfredo Renga ◽  
Marco Grasso ◽  
Antonio Moccia
Keyword(s):  
Uniform Distribution ◽  
High Performance ◽  
Formation Flying ◽  
Pulse Repetition Frequency ◽  
Signal Ratio ◽  
Digital Beamforming ◽  
Novel Approach ◽  
Low Weight ◽  
Sar Processing

Formation-flying synthetic aperture radar (FF-SAR) enables new working modes and can achieve very high performance through a series of very compact, low-weight, satellite platforms thanks to passive operations of conveniently distributed formation-flying receivers. System timing is a crucial aspect of FF-SAR. The manuscript presents a novel approach to pulse repetition frequency (PRF) selection in order to obtain a uniform distribution of samples at given platform positions. A digital beamforming algorithm is applied on a stack of monostatic repeat-pass images collected by the Sentinel-1 system to test the validity of the PRF selection method. Processed images were thus properly selected to achieve the best merit index measuring the quality of samples distribution. The results show that: (a) the image resulting from beamforming features better azimuth ambiguity-to-signal ratio and (b) the proposed approach for PRF selection allows one to individuate a subset of the available images leading to uniform distribution of samples which can be used to support FF-SAR processing.

scholarly journals Development of HPLC Fingerprint for Quality Assessment of Bulbus Lilii

2013 ◽  
Vol 8 (10) ◽  
pp. 1934578X1300801
Author(s):  
Kunming Qin ◽  
Hao Cai ◽  
Lijuan Zheng ◽  
Miao Zhang ◽  
Xinghai Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
Quality Evaluation ◽  
Quality Analysis ◽  
Analysis Method ◽  
Hplc Fingerprint ◽  
Array Detection ◽  
Different Origins ◽  
First Time ◽  
And Storage

In this study, a simple, sensitive and reliable fingerprint analysis method by high-performance liquid chromatography coupled with diode array detection (HPLC-DAD) was developed for quality analysis of Bulbus Lilii, which is a famous traditional Chinese medicine and widely used as a restorative food. Then the developed method was subsequently applied to analyse 16 samples collected or purchased from different origins. Twelve common fingerprint peaks, including four definitely identified peaks, were found in total, and were involved for further characterisation and quality evaluation of Bulbus Lilii. The chemical quality of commercial samples collected from different origins varied obviously, indicating that more attention should be paid to the standardisation of the process of harvesting, manufacturing and storage of Bulbus Lilii. This is the first time that a new method has been established to control the quality of Bulbus Lilii through HPLC-DAD.

Bioactive Compounds from the Flower Part of Polygonum maritimum L. Collected from Algerian Coast

2020 ◽  
Vol 16 (4) ◽  
pp. 543-545 ◽  
Author(s):  
Imad Abdelhamid El Haci ◽  
Wissame Mazari ◽  
Fawzia Atik-Bekkara ◽  
Fatma Mouttas-Bendimerad ◽  
Fayçal Hassani
Keyword(s):  
Phenolic Compounds ◽  
Bioactive Compounds ◽  
High Performance ◽  
Reversed Phase ◽  
Uv Spectra ◽  
Local Database ◽  
Rp Hplc ◽  
Algerian Coast ◽  
First Time

Background: Polygonum maritimum is one of the spontaneous halophyte plants of the Algerian coast. Many studies were carried out to evaluate the contents and the quality of phenolic compounds of this plant around the Mediterranean region. Objective: This paper intends to identify, for the first time, the phenolic compounds from the flower part of P. maritimum. Methods: RP-HPLC-PDA (Reversed Phase-High Performance Liquid Chromatography-Photo Diode Array) material was used for this purpose. Many standards were used and their retention times were stored in a local database. Identification was made on the basis of retention times of retained compounds and those found in the literature, and UV spectra of each peak. Results: This study intends to identify five phenolic acids (gallic, ferulic, sinapic, caffeic and syringic acids), one flavonol (rutin) and one flavanone (naringenin). Conclusion: P. maritimum is an important source of natural bioactive compounds that can be exploited for the benefit of many fields.

Decisive Moment: A Metric to Determine Success in Elite Karate Bouts

2018 ◽  
Vol 13 (8) ◽  
pp. 1000-1004 ◽  
Author(s):  
Montassar Tabben ◽  
Bianca Miarka ◽  
Karim Chamari ◽  
Ralph Beneke
Keyword(s):  
Motion Analysis ◽  
Upper Limb ◽  
High Performance ◽  
Performance Characteristics ◽  
The Other ◽  
Time Motion ◽  
Novel Approach ◽  
Before And After ◽  
The Moment ◽  
First Time

Purpose: To evaluate the concept of decisive moment (DM) as a novel analysis approach providing insights into factors leading to successful high-performance kumite karate outcomes using time–motion variables. DM represents the moment from which 1 of the 2 opponents uninterruptedly dominates the other until the end of the fight. Methods: A total of 120 elite seniors (60 men and 60 women) World Karate Federation combats were analyzed during 2 World Championships (2012 and 2014). Specific characteristics of karate combat (strategy, technique, tactic, target, and effectiveness) were evaluated and classified in 3 sections: at, before, and after DM. Results: DM occurred at about 49% (32.8%) of bout duration. Up to DM no clearly identifiable differences in performance characteristics were found between winners and losers. At and after DM, an offensive strategy with focus on upper-limb techniques, attack and counterattack, targeting the head showed highest potential to achieve and maintain dominance and to win. After DM, losers showed increasingly reactive techniques, mainly timed attacks and combinatory techniques. Conclusion: The DM concept presents a novel approach to time–motion analysis, which for the first time allowed identification of clear discriminating factors of success and defeat in kumite karate at the highest performance level.

A virtual e-bespoke men's shirt based on new body measurements and method of pattern drafting

2020 ◽  
Vol 90 (19-20) ◽  
pp. 2223-2244
Author(s):  
Jiaqi Yan ◽  
Victor E Kuzmichev
Keyword(s):  
New Technologies ◽  
Apparel Industry ◽  
Morphological Features ◽  
Evaluation Procedure ◽  
Body Measurements ◽  
The Novel ◽  
Novel Approach ◽  
The One ◽  
High Level

Customization is prevailing in the apparel industry with increasing requirements from consumers and the popularization of new technologies. This study aimed to establish the novel approach of applying existing and new body measurements to customize the pattern block of a men's shirt, to enrich the anthropometric database, and to develop the fit evaluation procedure. New body measurements were extracted from 156 scanned male mesh bodies in accordance with the morphological features and developing method of pattern block sketching. Owing to these new body measurements, the customized shirt with assured high-level fit can be obtained by generating original patterns as bespoke, on the one hand, and by transforming ready-to-wear patterns, on the other hand. The first way is e-bespoke tailoring that utilizes the developed schedule of body morphological features, improved shirt pattern of desired style (body fit, slim fit, regular fit, and comfort fit), and virtual try-on software CLO 3D. The proposed method of virtual e-bespoke design allows readily completing a well-fitted and balanced men's shirt, which will contribute to the efficiency of customization and quality of end-products for the apparel industry.

scholarly journals A novel approach in the free-electron laser diagnosis based on a pixelated phosphor detector

2016 ◽  
Vol 23 (1) ◽  
pp. 29-34 ◽  
Author(s):  
Alessia Matruglio ◽  
Simone Dal Zilio ◽  
Rudi Sergo ◽  
Riccardo Mincigrucci ◽  
Cristian Svetina ◽  
...  
Keyword(s):  
High Resolution ◽  
Silicon Substrate ◽  
Free Electron ◽  
Free Electron Laser ◽  
High Performance ◽  
Spot Size ◽  
The Novel ◽  
Etching Technique ◽  
Novel Approach ◽  
Focused Beam

A new high-performance method for the free-electron laser (FEL) focused beam diagnosis has been successfully tested at the FERMI FEL in Trieste, Italy. The novel pixelated phosphor detector (PPD) consists of micrometric pixels produced by classical UV lithography and dry etching technique, fabricated on a silicon substrate, arranged in a hexagonal geometry and filled with suitable phosphors. It has been demonstrated that the overall resolution of the system has increased by reducing the diffusion of the light in the phosphors. Various types of PPD have been produced and tested, demonstrating a high resolution in the beam profile and the ability to measure the actual spot size shot-to-shot with an unprecedented resolution. For these reasons, the proposed detector could become a reference technique in the FEL diagnosis field.

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