scholarly journals Porous Fiber Processing and Manufacturing for Energy Storage Applications

2020 ◽  
Vol 4 (4) ◽  
pp. 59 ◽  
Author(s):  
Yong X. Gan ◽  
Jeremy B. Gan
Keyword(s):  
Energy Storage ◽  
Melt Spinning ◽  
Specific Area ◽  
Rechargeable Batteries ◽  
Porous Fiber ◽  
Advantages And Disadvantages ◽  
Manufacturing Technologies ◽  
Fiber Processing ◽  
Made In

The objective of this article is to provide an overview on the current development of micro- and nanoporous fiber processing and manufacturing technologies. Various methods for making micro- and nanoporous fibers including co-electrospinning, melt spinning, dry jet-wet quenching spinning, vapor deposition, template assisted deposition, electrochemical oxidization, and hydrothermal oxidization are presented. Comparison is made in terms of advantages and disadvantages of different routes for porous fiber processing. Characterization of the pore size, porosity, and specific area is introduced as well. Applications of porous fibers in various fields are discussed. The emphasis is put on their uses for energy storage components and devices including rechargeable batteries and supercapacitors.

scholarly journals Scaffold-Based Tissue Engineering Strategies for Osteochondral Repair

2022 ◽  
Vol 9 ◽  
Author(s):  
Jiang-Nan Fu ◽  
Xing Wang ◽  
Meng Yang ◽  
You-Rong Chen ◽  
Ji-Ying Zhang ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Metal Composite ◽  
Tissue Engineering Scaffolds ◽  
Advantages And Disadvantages ◽  
Osteochondral Repair ◽  
Cell Growth And Differentiation ◽  
Manufacturing Technologies ◽  
Made In

Over centuries, several advances have been made in osteochondral (OC) tissue engineering to regenerate more biomimetic tissue. As an essential component of tissue engineering, scaffolds provide structural and functional support for cell growth and differentiation. Numerous scaffold types, such as porous, hydrogel, fibrous, microsphere, metal, composite and decellularized matrix, have been reported and evaluated for OC tissue regeneration in vitro and in vivo, with respective advantages and disadvantages. Unfortunately, due to the inherent complexity of organizational structure and the objective limitations of manufacturing technologies and biomaterials, we have not yet achieved stable and satisfactory effects of OC defects repair. In this review, we summarize the complicated gradients of natural OC tissue and then discuss various osteochondral tissue engineering strategies, focusing on scaffold design with abundant cell resources, material types, fabrication techniques and functional properties.

scholarly journals Recent Advancements of N-Doped Graphene for Rechargeable Batteries: A Review

Crystals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1080
Author(s):  
Rabia Ikram ◽  
Badrul Mohamed Jan ◽  
Syed Atif Pervez ◽  
Vassilis M. Papadakis ◽  
Waqas Ahmad ◽  
...  
Keyword(s):  
Energy Storage ◽  
Large Scale ◽  
Storage Systems ◽  
Rechargeable Batteries ◽  
Energy Storage Systems ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Advantages And Disadvantages ◽  
Graphene Synthesis ◽  
Doped Graphene

Graphene, a 2D carbon structure, due to its unique materials characteristics for energy storage applications has grasped the considerable attention of scientists. The highlighted properties of this material with a mechanically robust and highly conductive nature have opened new opportunities for different energy storage systems such as Li-S (lithium-sulfur), Li-ion batteries, and metal-air batteries. It is necessary to understand the intrinsic properties of graphene materials to widen its large-scale applications in energy storage systems. In this review, different routes of graphene synthesis were investigated using chemical, thermal, plasma, and other methods along with their advantages and disadvantages. Apart from this, the applications of N-doped graphene in energy storage devices were discussed.

Environmental and Economic Features of Application of Various Methods of Disinfection of the Treated Sewage of a Holiday House

2018 ◽  
Vol 22 (9) ◽  
pp. 58-61
Author(s):  
G.I. Zubareva
Keyword(s):  
Uv Irradiation ◽  
Domestic Sewage ◽  
Treated Wastewater ◽  
Advantages And Disadvantages ◽  
Disinfection Methods ◽  
Factors Influencing ◽  
Treated Sewage ◽  
Soil Recovery ◽  
Made In

The types of wastewater of a holiday house are considered. The necessity of disinfection of the treated domestic sewage at house before their soil recovery is substantiated. The methods of disinfection of treated holiday house drainage are described: chlorination, ozonizing, ultraviolet (UV) irradiation, and their essence is revealed. Their advantages and disadvantages are listed. A comparative ecological characterization of the indicated methods of disinfection of sewage is given. Factors influencing the efficiency of disinfection of wastewater by these methods and on the economic indicators of processes are indicated. As a result of the environmental and economic evaluation of disinfection methods, a conclusion has been made in favor of the prospect of applying the UV irradiation method for disinfection of the treated wastewater from a holiday house.

High Pressure Solvothermal Microencapsulation of D-Mannitol in Inorganic Shells for Thermal Energy Storage

2018 ◽  
Vol 69 (6) ◽  
pp. 1473-1477
Author(s):  
Roxana M. Piticescu ◽  
Laura M. Popescu ◽  
Anca E. Slobozeanu ◽  
Albert I. Tudor ◽  
Radu R. Piticescu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Melting Temperature ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Waste Heat ◽  
Low Cost ◽  
Specific Area ◽  
Energy Storage Properties

D-Mannitol has been demonstrated by different authors as a new phase change material (PCM) for thermal energy storage with high latent heat, low cost, environmentally friendly chemical nature and suitable melting temperature for applications in solar collectors, space heating or industrial waste heat. The main drawback is their low thermal conductivity, affecting heat transfer properties. In this work, the microencapsulation of D-Mannitol in ZnO shells is evaluated as a procedure to increase the specific area of heat exchange. The inorganic shell based on ZnO has been selected for the microencapsulation using an in-situ solvothermal followed by spray drying. Characterization of the microcapsules obtained has been mainly carried out by XRD, DSC, IR spectroscopy and SEM. Results have shown that experimental parameters such as the pressure and reaction time for the solvothermal microencapsulation process determine the crystalline phases of the shell and their thermal energy storage properties (melting temperature and enthalpy).

ICO as a Business Financing Tool: Myths and Reality

2018 ◽  
Vol 11 (2) ◽  
pp. 41-51 ◽  
Author(s):  
I. Ya. Lukasevich
Keyword(s):  
Corporate Finance ◽  
Digital Economy ◽  
Real Sector ◽  
The Real ◽  
Objective Information ◽  
Advantages And Disadvantages ◽  
Russian Economy ◽  
The Subject ◽  
Business Financing ◽  
Made In

The subject of the research is new tools for business financing using the initial coin offering (ICO) in the context of the development of cryptocurrencies and the blockchain technologies as their basis. The purpose of the work was to analyze the advantages and disadvantages of the ICO in comparison with traditional financial tools as well as prospects, limitations and problems of using digital financial tools. Conclusions are made in relation to possibilities, limitations and application areas of digital business financing tools, particularly in the real sector, taking into account the specifics of the Russian economy and legislation. It is shown that the main problems of using the digital financial tools are related to the economic sphere and caused by the lack of adequate approaches to evaluation of assets as well as the shortage of objective information. The problems and new tasks of corporate finance in the digital economy are defined.

Thermal characterization of ABS-Graphene blended three dimensional printed functional prototypes for electro chemical energy storage

2018 ◽  
Vol 1 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Kamaljit Singh Boparai ◽  
Rupinder Singh
Keyword(s):  
Energy Storage ◽  
Structural Changes ◽  
Fused Deposition Modeling ◽  
Morphological Changes ◽  
Three Dimensional ◽  
Thermal Characterization ◽  
Chemical Energy ◽  
Flow Index ◽  
Fused Deposition

This study highlights the thermal characterization of ABS-Graphene blended three dimensional (3D) printed functional prototypes by fused deposition modeling (FDM) process. These functional prototypes have some applications as electro-chemical energy storage devices (EESD). Initially, the suitability of ABS-Graphene composite material for FDM applications has been examined by melt flow index (MFI) test. After establishing MFI, the feedstock filament for FDM has been prepared by an extrusion process. The fabricated filament has been used for printing 3D functional prototypes for printing of in-house EESD. The differential scanning calorimeter (DSC) analysis was conducted to understand the effect on glass transition temperature with the inclusion of Graphene (Gr) particles. It has been observed that the reinforced Gr particles act as a thermal reservoir (sink) and enhances its thermal/electrical conductivity. Also, FT-IR spectra realized the structural changes with the inclusion of Gr in ABS matrix. The results are supported by scanning electron microscopy (SEM) based micrographs for understanding the morphological changes.

Inflammatory Markers Associated With Diabetes Mellitus – Old and New Players

2020 ◽  
Vol 26 ◽  
Author(s):  
Emir Muzurović ◽  
Zoja Stanković ◽  
Zlata Kovačević ◽  
Benida Šahmanović Škrijelj ◽  
Dimitri P Mikhailidis
Keyword(s):  
Diabetes Mellitus ◽  
Inflammatory Markers ◽  
High Specificity ◽  
Future Directions ◽  
Effective Strategies ◽  
Advantages And Disadvantages ◽  
Type 2 Dm ◽  
Increased Risk ◽  
Made In

: Diabetes mellitus (DM) is a chronic and complex metabolic disorder, and also an important cause of cardiovascular (CV) diseases (CVDs). Subclinical inflammation, observed in patients with type 2 DM (T2DM), cannot be considered the sole or primary cause of T2DM in the absence of classical risk factors, but it represents an important mechanism that serves as a bridge between primary causes of T2DM and its manifestation. Progress has been made in the identification of effective strategies to prevent or delay the onset of T2DM. It is important to identify those at increased risk for DM by using specific biomarkers. Inflammatory markers correlate with insulin resistance (IR) and glycoregulation in patients with DM. Also, several inflammatory markers have been shown to be useful in assessing the risk of developing DM and its complications. However, the intertwining of pathophysiological processes and the not-quite-specificity of inflammatory markers for certain clinical entities limits their practical use. In this review we consider the advantages and disadvantages of various inflammatory biomarkers of DM that have been investigated to date as well as possible future directions. Key features of such biomarkers should be high specificity, non-invasiveness and cost-effectiveness.

Bioactivity of Marine Natural Product Xyloketals

2020 ◽  
Vol 17 ◽  
Author(s):  
Biswajit Panda ◽  
Amal Kumar Gooyee
Keyword(s):  
Natural Products ◽  
Marine Natural Product ◽  
Ischemic Brain Injury ◽  
Ischemic Brain ◽  
Activity Inhibition ◽  
Life Saving ◽  
Behavior Suppression ◽  
Major Emphasis ◽  
Made In

: Oceans can play a major role in supplying life-saving medicines in the world in future. Although considerable progress has been made in finding new medicines from marine sources, large efforts are still necessary to examine such molecules for clinical applications. Xyloketals are an important group of natural products with various powerful and prominent bioactivities such as inhibition of acetylcholine esterase, antioxidant activity, inhibition of L-calcium channels, radicalscavenging behavior, suppression of cell proliferation, reduction of neonatal hypoxic-ischemic brain injury, etc. This review describes the isolation and structural characterization of all xyloketal natural products giving major emphasis on their bioactivity.

Characterization of Auditory Disability and Its Relation to the Resilience

2018 ◽  
Vol 5 (2) ◽  
pp. 15
Author(s):  
Bibian Bibeca Bumbila García ◽  
Hernán Andrés Cedeño Cedeño ◽  
Tatiana Moreira Chica ◽  
Yaritza Rossana Parrales Ríos
Keyword(s):  
Social Integration ◽  
Conceptual Analysis ◽  
Disabled People ◽  
Disabled Students ◽  
Hearing Disability ◽  
Technical University ◽  
The Relationship ◽  
Made In

The objective of the work is to establish the characterization of the auditory disability and its relationship with resilience at the Technical University of Manabí. The article shows a conceptual analysis related to the inclusion and social integration of disabled students. Based on the fact that the person with disabilities grows and develops in the same way as that of people without disabilities and what usually happens is that disabled people are rejected and discriminated against based on a prefabricated and erroneous conceptualization of these people. The results associated with the application of the SV-RES test prepared by the researchers are shown (Saavedra & Villalta, 2008b). Characterization of the auditory deficit is made in the students, and the limitations that derive from it are pointed out. We analyze the particularities related to communication with students who have a hearing disability and resilience in this type of student, where some personal highlights that in this sense constitute an example of resilience. Finally, the results related to the study of the relationship between students' hearing disability and the level of resilience dimensions are shown.

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