Nanocomposites: A New Tendency of Structure in Nanotechnology and Material Science

2021 ◽  
Vol 7 (1) ◽  
pp. 937-941
Author(s):  
Altaf Rajani ◽  
Priyanka Chauhan ◽  
Pranav Y. Dave
Keyword(s):  
Material Science ◽  
Electronic Devices ◽  
Optoelectronic Devices ◽  
Review Article ◽  
Literature Survey ◽  
Nano Composites ◽  
Preparation Methods ◽  
Plasmonic Structures ◽  
New Challenges ◽  
The Individual

Nanoscience has become a diverse and unique field of scientific and technical activity. Over the last few years, the research interest in nanomaterials/nanoparticles and their various applications in various electronic devices, effective optoelectronic devices, bio-sensors, photodetectors, solar cells, nanodevices and plasmonic structures have been increasing tremendously. The reasons are-the unique properties of nanostructures and the outstanding performance of nanoscale devices. At the nanoscale, a material’s property can change dramatically, with unique design possibilities and properties; they attract the attention of researchers worldwide. Nano-composites are those materials with a Nano-scale structure which improves the microscopic property of the products. Composite materials have combinations of two or several nanocomponents, which acquire new and unique characteristic properties that the individual constituents, by themselves, cannot obtain. There are number of various methods to synthesis various Nano-composites. Based on the literature survey, this review article explains a brief introduction of nanocomposites and their types, preparation methods and different diverse properties. It also describes the benefits and limitations of it and new challenges/future scope of the nanocomposites for the better future applications in different sectors.

Review on Synthesis of Bio-active Coumarin-fused Heterocyclic Molecules

2020 ◽  
Vol 24 (22) ◽  
pp. 2566-2587
Author(s):  
Geetika Patel ◽  
Subhash Banerjee
Keyword(s):  
Organic Chemistry ◽  
Heterocyclic Compounds ◽  
Multistep Method ◽  
Review Article ◽  
Literature Survey ◽  
Research Articles ◽  
One Pot ◽  
Physiochemical Properties ◽  
Heterocyclic Molecules ◽  
The Individual

The literature survey reveals that the individual coumarin and heterocyclic molecules have biological and pharmaceutical activities. Moreover, integrated coumarinfused heterocyclic compounds have shown interesting biological and physiochemical properties and thus, designing and development of coumarin-fused heterocyclic molecules are of great interest in the field of synthetic organic chemistry. Several coumarin-fused heterocyclic molecules have been synthesized by using different strategies such as multistep method, one-pot multi-component protocol, coupling and condensation method. The wide applications of integrated coumarin-fused heterocyclic molecules stimulated interest among researchers to develop different methodologies for the synthesis of novel fused molecules. As a consequence, several research articles, papers and review articles have been published in the literature. In this review article, we have presented various methods for the synthesis of different class of coumarin-fused heterocyclic molecules and their applications in chemical, optical, pharmaceutical and other useful applications.

scholarly journals Series Compensation of Transmission Systems: A Literature Survey

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1717
Author(s):  
Camilo Andrés Ordóñez ◽  
Antonio Gómez-Expósito ◽  
José María Maza-Ortega
Keyword(s):  
Steady State ◽  
Power Systems ◽  
Power System ◽  
Case Studies ◽  
Electronic Devices ◽  
Literature Survey ◽  
Power Electronic ◽  
Transmission Systems ◽  
Series Compensation ◽  
Near Future

This paper reviews the basics of series compensation in transmission systems through a literature survey. The benefits that this technology brings to enhance the steady state and dynamic operation of power systems are analyzed. The review outlines the evolution of the series compensation technologies, from mechanically operated switches to line- and self-commutated power electronic devices, covering control issues, different applications, practical realizations, and case studies. Finally, the paper closes with the major challenges that this technology will face in the near future to achieve a fully decarbonized power system.

scholarly journals Application of Advanced Nanomaterials for Kidney Failure Treatment and Regeneration

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2939
Author(s):  
Aziz Eftekhari ◽  
Solmaz Maleki Dizaj ◽  
Elham Ahmadian ◽  
Agata Przekora ◽  
Seyed Mahdi Hosseiniyan Khatibi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Material Science ◽  
Human Life ◽  
Renal Tissue ◽  
Blood Purification ◽  
Review Article ◽  
Renal Diseases ◽  
Drug Solubility ◽  
Failure Treatment

The implementation of nanomedicine not only provides enhanced drug solubility and reduced off-target adverse effects, but also offers novel theranostic approaches in clinical practice. The increasing number of studies on the application of nanomaterials in kidney therapies has provided hope in a more efficient strategy for the treatment of renal diseases. The combination of biotechnology, material science and nanotechnology has rapidly gained momentum in the realm of therapeutic medicine. The establishment of the bedrock of this emerging field has been initiated and an exponential progress is observed which might significantly improve the quality of human life. In this context, several approaches based on nanomaterials have been applied in the treatment and regeneration of renal tissue. The presented review article in detail describes novel strategies for renal failure treatment with the use of various nanomaterials (including carbon nanotubes, nanofibrous membranes), mesenchymal stem cells-derived nanovesicles, and nanomaterial-based adsorbents and membranes that are used in wearable blood purification systems and synthetic kidneys.

scholarly journals A Proposed Harmonic Monitoring System for Large Power Users Considering Harmonic Limits

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4507
Author(s):  
Rosalia Sinvula ◽  
Khaled Mohamed Abo-Al-Ez ◽  
Mohamed Tariq Kahn
Keyword(s):  
Monitoring System ◽  
Renewable Energy Sources ◽  
Electronic Devices ◽  
Harmonic Distortion ◽  
Large Power ◽  
High Penetration ◽  
Point Of Common Coupling ◽  
Common Coupling ◽  
Power Utilities ◽  
The Individual

Most power utilities within Southern Africa are faced with the challenges of harmonic distortion due to the high penetration of renewable energy sources (RES) and the use of electronic devices. There is an excessive total harmonic distortion (THD) measured at the point of common coupling (PCC). In this paper, a proposed harmonic monitoring system for large power users (LPUs) is developed. This proposed system considers harmonic limits of the individual and THD of the customers allowed injecting into the network, which should be part of the contractual electricity supply agreement (ESA). Hence, it will enable the monitoring of harmonic distortion to be smooth by determining whether the customer has passed or failed compliance for individual harmonic order and the THD of the voltage. The measurements of harmonic distortion are done using the Unipower power quality (PQ) analyzers that are connected at different points within the industrial network. Measurements of harmonic distortion of an industrial site are compared to the simulation results performed by DIgSILENT software to validate the proposed harmonic monitoring system. Based on the validation results, it is recommended that the ESA between the power utilities and the customers should consist of the harmonic limits.

Colorants in plastic applications

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Gerhard Pfaff
Keyword(s):  
Current Knowledge ◽  
Review Article ◽  
Important Application ◽  
Processing Method ◽  
Application Systems ◽  
Plastic Type ◽  
Printing Inks ◽  
Cosmetic Formulations ◽  
Plastics Processing ◽  
The Individual

AbstractThis review article is a summary of the current knowledge in the field of plastic coloring. Plastics belong as well as paints, coatings, printing inks, and cosmetic formulations to the most important application systems for colorants, both for pigments and dyes. Colorants have to meet increasing demands in plastic applications due to the growing number of polymers with specific properties. Crucial factors besides the plastic type are the processing method and the required fastness level. Among the most important polymers for coloring with pigments and dyes are polyolefins, polyvinyl chloride, polyurethane, polyamide, polycarbonate, polyester, and elastomers. Different processing methods are used for coloring of the individual plastics. The coloring processes need to be coordinated in accordance with the steps of the plastics processing leading to the final product.

Attending to the Teacher in the Teaching: Prioritizing Faculty Well-Being

2021 ◽  
pp. 1-10
Author(s):  
Brianne H. Roos ◽  
Carey C. Borkoski
Keyword(s):  
Higher Education ◽  
Professional Learning ◽  
Well Being ◽  
Review Article ◽  
Faculty Members ◽  
High Expectations ◽  
The People ◽  
History Of ◽  
The Individual ◽  
The University

Purpose The purpose of this review article is to examine the well-being of faculty in higher education. Success in academia depends on productivity in research, teaching, and service to the university, and the workload model that excludes attention to the welfare of faculty members themselves contributes to stress and burnout. Importantly, student success and well-being is influenced largely by their faculty members, whose ability to inspire and lead depends on their own well-being. This review article underscores the importance of attending to the well-being of the people behind the productivity in higher education. Method This study is a narrative review of the literature about faculty well-being in higher education. The history of well-being in the workplace and academia, concepts of stress and well-being in higher education faculty, and evidence-based strategies to promote and cultivate faculty well-being were explored in the literature using electronic sources. Conclusions Faculty feel overburdened and pressured to work constantly to meet the demands of academia, and they strive for work–life balance. Faculty report stress and burnout related to excessively high expectations, financial pressures to obtain research funding, limited time to manage their workload, and a belief that individual progress is never sufficient. Faculty well-being is important for the individual and in support of scholarship and student outcomes. This article concludes with strategies to improve faculty well-being that incorporate an intentional focus on faculty members themselves, prioritize a community of well-being, and implement continuous high-quality professional learning.

scholarly journals Understanding the role of convenience in consumer food choices: a review article

SURG Journal ◽  
1969 ◽  
Vol 2 (2) ◽  
pp. 40-48 ◽  
Author(s):  
Mary-Ellen Wales
Keyword(s):  
Consumer Demand ◽  
Food Choices ◽  
Home Delivery ◽  
Review Article ◽  
Individual Characteristics ◽  
Western World ◽  
Internet Shopping ◽  
Meal Preparation ◽  
The Individual

It is evident that convenience plays a prominent role in the food choices of today’s consumers. A trend having begun throughout the Western world, consumer demand for convenience foods is now on the rise around the globe. The growing presence of drive-thru windows, microwave dinners, take-out meals, home delivery for groceries and internet shopping, all demonstrate the importance of convenience in determining food choices. Costa et al. have argued that convenience itself determines where, when, why, what, how, and even with whom we eat. Several studies have examined the role that convenience plays in determining food choices, in particular, studies looking at the role of convenience in relation to full meal preparation and/ or consumption.The two areas of investigation will be 1) the dimensions of convenience as a part of the meal preparation and consumption processe, and 2) the individual characteristics of consumers and how they value these dimensions.

scholarly journals Binicilik Antrenörü Gözünde Hippoterapi

2020 ◽  
Vol 8 (10) ◽  
pp. 2131-2138
Author(s):  
Ali Ekber Ün
Keyword(s):  
Review Article ◽  
Public Institutions ◽  
Team Work ◽  
Individuals With Disabilities ◽  
Future Studies ◽  
Current Review ◽  
History Of ◽  
Expert Team ◽  
The Individual ◽  
Shed Light

The purpose of this review article is to collaborate on future studies about hippotherapy to horse and riding trainers, health professionals, veterinarians, individuals in need and individuals with disabilities and their relatives and to shed light on academic studies. It has been stated in studies that hippotherapy is beneficial for patients in the world. Therefore, as a result of new private hippotherapy centers in public institutions and in Turkey, studies on hippotherapy have been started. The studies carried out in hippotherapy are increasing and widespread and continuing to contribute to the treatment of the individuals in need and individuals with disabilities with hippotherapy sessions with expert teams. However, in the studies, the sessions of the hippotherapy team with two common creatures have great duties on the equestrian coaches in order to meet the needs of the horse and the individual in need or individual with disability. For this reason, since hippotherapy is a multidisciplinary team work consisting of specialist professionals, it has been researched to contribute to the horse and rider coaches on the field and to the expert team attending the sessions, to the new experts and the families of the individuals in need and disabled individuals. In the current review, the information about the history of hippotherapy and development, information about hippotherapy institutions in Turkey, individuals in need and individuals with disabilities, benefits of hippotherapy, characteristics of the hippotherapy horse, training of the hippotherapy horse are emphasized, and especially emphasis is placed on the use of work in the field of horse and equestrian coaching.

scholarly journals Overview and Insights into Carbapenem Allergy

Pharmacy ◽  
2019 ◽  
Vol 7 (3) ◽  
pp. 110 ◽  
Author(s):  
Yuman Lee ◽  
Nicole Bradley
Keyword(s):  
Case Reports ◽  
Review Article ◽  
Limited Data ◽  
Substantial Impact ◽  
Cross Sensitivity ◽  
Search Terms ◽  
Incidence Risk ◽  
Pubmed Search ◽  
The Individual ◽  
Insight Into

Understanding antibiotic allergies and the risk of cross-sensitivity between and within antibiotic classes can have a substantial impact on patient care. The purpose of this review article is to provide insight into carbapenem allergies, describing the overall incidence, risk factors, and in-class cross-sensitivity. A PubMed search was conducted using the following search terms: carbapenem, allergy, cross-sensitivity, incidence, imipenem/cilastatin, meropenem, ertapenem, and doripenem. Article bibliographies and relevant drug monographs were also reviewed. The overall reported incidence of carbapenem allergy is 0.3%–3.7%. Risk of cross-sensitivity between penicillins and carbapenems is less than 1% in patients with a positive penicillin skin test. Data on cross-sensitivity between cephalosporins and carbapenems are limited; however, the risk appears to also be low. No clinical studies have described cross-sensitivity between the carbapenem agents thus far. The limited data available from case reports demonstrates a lack of cross-sensitivity between the individual carbapenems, suggesting that an alternative carbapenem may cautiously be used in patients with a reported carbapenem allergy.

scholarly journals Development of a Remote-Controlled Electrical Interference Vehicle with a Magnetron

Sensors ◽  
2020 ◽  
Vol 20 (21) ◽  
pp. 6309
Author(s):  
Miroslav Popela ◽  
Jan Leuchter ◽  
Jana Olivová ◽  
Marie Richterová
Keyword(s):  
Frequency Band ◽  
Power Supply ◽  
Wireless Sensors ◽  
High Performance ◽  
Electronic Devices ◽  
Main Idea ◽  
Substantial Part ◽  
Operational Mode ◽  
Li Po ◽  
The Individual

This paper describes the design and construction of a remotely controlled mobile interference device designed primarily for interference (jamming) and immunity testing of wireless sensors operating in the 2.4 GHz band (Wi-Fi). The main idea was to build a remotely controlled test device to test the immunity of wireless sensors operating in the 2.4 GHz band directly in field conditions. The remotely controlled mobile interference device is equipped with a special interference apparatus, using a special magnetron tube as a source of interference. Magnetron was selected due to its high performance, allowing interference with wireless sensors over long distances. As magnetron is powered by high voltage (3 kVDC) and is being used in a remotely controlled device, it was important to solve the issue of its power supply using an accumulator. The remotely controlled device was further equipped with the option of detecting and analysing signals in the frequency band of 1 GHz to 18 GHz, adding an extra operational mode that can be used in civil (commercial), industrial, and military applications. Detection and analysis of extraneous signals that may affect our various electronic devices, operating in the 1 GHz to 18 GHz frequency band, is very important. By detecting and analyzing the detected signal, it is possible to recognize what kind of foreign device is transmitting on the detected frequency and how much it can affect the proper functioning of our electronic devices. All the individual parts of the remotely controlled mobile interference device are described in this article in detail, including their optimization for maximum use of the accumulator capacity by which the remotely controlled mobile interference device is powered. A substantial part of this article is devoted to optimizing the interference apparatus power supply with a resonant converter and internal intelligence, where the accumulators’ capacity is measured to gain needed predictions for maximum use of Li-Po batteries and thus extending its time of use.

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