Systematization, Classification, Structure, and Elements

Author(s):  
Hrvoj Vančik
2021 ◽  

Ferrites are highly interesting high-tech materials. The book covers their classification, structure, synthesis, properties and applications. Emphasis is placed an biomedical applications, degradation of organic pollutants, high frequency applications, photocatalytic applications for wastewater remediation, solar cell applications, removal of organic dyes and drugs from aquatic systems, and the synthesis of hexagonal ferrites.


2021 ◽  
Author(s):  
Hanan Al-Khalaifah ◽  
Mohammad Al-Otaibi ◽  
Abdulaziz Al-Ateeqi

With the onset of the coronavirus pandemic in December 2019 in China, and the alarming rate at which it has spread across the world has unleashed not only fear, but has taken a toll on social, economic, health, and governing capabilities of the various countries infected with the virus. The pandemic is affecting all aspects of life, including industries such as the animal production industry all over the world. This includes plant, livestock and poultry production. Food security is accordingly impacted, as these industries are vital elements that are contributing to securing food to populations worldwide. In this review, light is shed on the origin of coronaviruses with special emphasis on COVID-19. It also includes introduction of symptoms, epidemiology and pathogenesis, etiology, and prevention. As the disease progresses, scientists are working around the clock in the hope of an effective vaccine, and they managed to introduce some to the worldwide populations. The world faces challenges on a day-to-day basis until most people are vaccinated.


2021 ◽  
Vol 34 (2) ◽  
pp. 11-26
Author(s):  
António Baptista ◽  
Carlos Guardado da Silva

This article presents the results of a documentary research regarding the current state of Organization and Representation of Musical Information (ORMI) in Portugal. Many authors describe the national scene of ORMI as very shortcoming, due to the usual difficulties: time vs. detail in the description and lack of knowledge of musical language by the technicians Information professionals. A survey of the monographs and articles as of 2011 that make a critical revision to the works of ORMI of several institutions was made, aiming to: 1) perceive their current state and 2) understand its strengths and weaknesses. We identified in these studies the analytic categories to create afterwards a classification structure by disciplinary areas, which shows semantic, structural and quality heterogeneity. The majority of Finding Aids are being produced by musicology projects with structures that respond to their information representation needs.


2021 ◽  
Vol 15 (1) ◽  
pp. 71-81
Author(s):  
Ashish Bhatt ◽  
Darshankumar Prajapati ◽  
Akshaya Gupte

Nitriles are organic compounds consisting of −C≡N group. They are frequently known to occur in nature and as intermediate by-products and waste products of various chemical, pharmaceutical, and agricultural industries. They are also found in fruit pits, cabbage, cauliflower, and sprouts, which are released upon hydrolysis. Nitrile converting enzymes like nitrilases have been extracted from microorganisms and plants. Nitrilase-mediated biocatalysis reactions have continuously aroused widespread interest to scientists and entrepreneurs in organic synthesis. Nitrile converting biocatalysts (Nitrilases) are now of substantial industrial interest from the perspective of treating toxic nitrile and cyanide-containing compounds. Nitrile degrading enzymes generally consist of nitrilases and amidases. The aim of the current review is to summarize the recent advancements on regioselective nitrilases concerning their fundamental researches and their application in the synthesis of series of high-value fine chemicals and pharmaceuticals. The present review also focuses on the utility of nitrile converting enzyme, sources, properties, classification, structure, and applications as well.


Sign in / Sign up

Export Citation Format

Share Document