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Topic Review
Verrucomicrobia
Verrucomicrobia is a phylum of Gram-negative bacteria that contains only a few described species. The species identified have been isolated from fresh water, marine and soil environments and human faeces. A number of as-yet uncultivated species have been identified in association with eukaryotic hosts including extrusive explosive ectosymbionts of protists and endosymbionts of nematodes residing in their gametes. Verrucomicrobia are abundant within the environment, though relatively inactive. This phylum is considered to have two sister phyla: Chlamydiae and Lentisphaerae within the PVC group. The Verrucomicrobia phylum can be distinguished from neighbouring phyla within the PVC group by the presence of several conserved signature indels (CSIs). These CSIs represent unique, synapomorphic characteristics that suggest common ancestry within Verrucomicrobia and an independent lineage amidst other bacteria. CSIs have also been found that are shared by Verrucomicrobia and Chlamydiae exclusively of all other bacteria. These CSIs provide evidence that Chlamydiae is the closest relative to Verrucomicrobia, and that they are more closely related to one another than to the Planctomycetales. Verrucomicrobia might belong in the clade Planctobacteria in the larger clade Gracilicutes. In 2008, the whole genome of Methylacidiphilum infernorum (2.3 Mbp) was published. On the single circular chromosome, 2473 predicted proteins were found, 731 of which had no detectable homologs. These analyses also revealed many possible homologies with Proteobacteria.
  • 1.0K
  • 21 Oct 2022
Biography
Veronica Vaida
Veronica Vaida (born 3 August 1950) is a Romanian-American Chemist and Professor at the University of Colorado Boulder. She is an expert in environmental chemistry and aerosols. Vaida was born in Bucharest.[1][2] Her parents were from Transylvania and met after World War II.[1] Her mother survived a Auschwitz concentration camp and her father was a political prisoner.[1] She attended a Hungar
  • 536
  • 30 Dec 2022
Topic Review
Veronese Bellringing Art
Veronese bellringing art is a style of ringing church bells that developed around Verona, Italy from the eighteenth century. The bells are rung full circle (mouth uppermost to mouth uppermost), being held up by a rope and wheel until a note is required.
  • 354
  • 07 Nov 2022
Topic Review
Verneuil Process
The Verneuil process, also called flame fusion, was the first commercially successful method of manufacturing synthetic gemstones, developed in the late 1800s by the French chemist Auguste Verneuil. It is primarily used to produce the ruby, sapphire and padparadscha varieties of corundum, as well as the diamond simulants rutile and strontium titanate. The principle of the process involves melting a finely powdered substance using an oxyhydrogen flame, and crystallising the melted droplets into a boule. The process is considered to be the founding step of modern industrial crystal growth technology, and remains in wide use to this day.
  • 1.7K
  • 18 Oct 2022
Topic Review
Vermicomposting on Greenhouse Gas Emission
The implementation of cutting-edge agricultural practices provides tools and techniques to drive climate-smart agriculture, reduce carbon emissions, and lower the carbon footprint. The alteration of climate conditions due to human activities poses a serious threat to the global agricultural systems. Greenhouse gas emissions (GHG) from organic waste management need urgent attention to optimize conventional composting strategies for organic wastes.
  • 1.2K
  • 21 Sep 2022
Topic Review
Vermicomposting of Silver Wattle
Vermicomposting is the process of organic waste degradation through interactions between earthworms and microbes. A variety of organic wastes can be vermicomposted, producing a nutrient-rich final product that can be used as a soil biofertilizer. Giving the prolific invasive nature of the Australian silver wattle Acacia dealbata Link in Europe, it is important to find alternatives for its sustainable use. However, optimization of vermicomposting needs further comprehension of the fundamental microbial processes.
  • 438
  • 18 Jan 2022
Topic Review
Vermicomposting
Vermicomposting is a process that has been intensively studied for years and has become significant and frequent topic. Numerous papers are describing its mechanism and performance, but each highlights different aspects. Although numerous studies have been conducted on the topic of vermicomposting and each of them has contributed to understanding the role of vermicompost, there are still unknowns that need to be additionally explored to maximize the potential of vermicompost and to recoup the process itself according to specific needs.
  • 1.2K
  • 27 Jan 2022
Topic Review
Vermicompost Application in the Remediation of Soils
Vermicompost improves soil quality, increases nutrient availability, boosts crop productivity, and enhances pest and disease tolerance. It acts as an organic fertilizer, enriching the soil with essential nutrients, humic acids, growth-regulating hormones, and enzymes, improving plant nutrition, photosynthesis, and overall crop quality. Furthermore, vermicompost shows promise in mitigating soil degradation and sequestering organic carbon while demonstrating the potential for pest management, including effectiveness against pests like fall armyworm (Spodoptera frugiperda).
  • 375
  • 20 Nov 2023
Topic Review
Vermicompost and Its Derivatives against Phytopathogenic Fungi
Vermicompost, a natural product obtained after decomposition of organic matter by the activity of earthworms, contribute to valuable bioavailable nutrients and use full microbes to increase soil fertility. The application of vermicompost in agriculture has resulted in remarkable improvements in crop yield as well as in crop health and nutritive qualities; it increases the soil mineral content, which enhances the survival of valuable microbes.
  • 668
  • 19 Apr 2022
Topic Review
Veritatis Splendor
Encyclical Veritatis splendor (Latin: The Splendor of the Truth) is an encyclical by Pope John Paul II. It expresses the position of the Catholic Church regarding fundamentals of the Church's role in moral teaching. The encyclical is one of the most comprehensive and philosophical teachings of moral theology in the Catholic tradition. It was promulgated on 6 August 1993. Cardinal Georges Cottier, Theologian emeritus of the Pontifical Household and Cardinal-Deacon of Santi Domenico e Sisto the University Church of the Pontifical University of Saint Thomas Aquinas was influential in drafting the encyclical, as was Servais-Théodore Pinckaers, a professor of moral theology at the University of Fribourg, while others stress its lasting validity and importance.
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  • 02 Dec 2022
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