Natural occurrence
-
Part 1 of ebook "Handbook of offshore oil and gas operations" provides readers with contents including: Chapter 1 - Occurrence and formation of crude oil and natural gas; Chapter 2 - Offshore geology and operations; Chapter 3 - Offshore platforms; Chapter 4 - Exploration; Chapter 5 - Drilling and well completion; Chapter 6 - Production; Chapter 7 - Transportation;...
215p tuongmothua 11-07-2024 1 0 Download
-
Investigating the occurrence of defects in structures is currently a major issue of significant interest. In this paper, we present experimental research findings on the relationship between the moments of the power spectrum and the presence of damage in bridge beam structures.
13p viwalton 02-07-2024 1 1 Download
-
The research stems from a problem of prevalence of tax evasion phenomenon from taxpayers and its negative and serious impacts resulting therefrom. The results of such negative and serious impacts are represented in a decrease tax revenue proceeds and the damages to the public treasury of the state, as well as the occurrence of evader taxpayers under the law and take the penalties and legal sanctions against them by the tax authority. For the purposes of this research, tax exemption can be perceived as those exemptions granted on the incomes of natural and moral taxpayers.
20p longtimenosee09 08-04-2024 1 0 Download
-
Ebook "Betalains: Biomolecular aspects" provides comprehensive coverage of betalains, outlining the specific makeup and uses of this plant. The chapters provide deep insight into the biosynthesis, structures, pharmacokinetics, stability, extraction, health benefits and occurrence in nature of betalains. As the first major reference work to focus specifically on betalains, this book serves as an important reference for any researcher looking for insights into the use of betalains as functional foods, food coloring agents, and nutraceuticals.
193p lamquandat 28-12-2023 6 2 Download
-
Cardiac Myxoma is a primary tumor of heart. Its origins, rarity of the occurrence of primary cardiac tumors and how it may be related to limited cardiac regenerative potential, are not yet entirely known. This study investigates the key cardiac genes/ transcription factors (TFs) and signaling pathways to understand these important questions.
46p vileonardodavinci 23-12-2023 4 2 Download
-
Worldwide, a significant proportion of head and neck cancers is attributed to the Human papillomavirus (HPV). It is imperative that we acquire a solid understanding of the natural history of this virus in head and neck squamous cell carcinoma (HNSCC) development. Our objective was to investigate the role of sexual behaviour in the occurrence of HNSCC in the French West Indies.
9p visharma 20-10-2023 6 2 Download
-
Part 1 of ebook "Veterinary epidemiology (Third edition)" provides readers with content including: the development of veterinary medicine; the scope of epidemiology; describing disease occurrence; determinants of disease; the transmission and maintenance of infection; the ecology of disease; the nature of data; data collection and management; presenting numerical data; demonstrating association; observational studies;...
303p lytamnguyet 04-08-2023 3 2 Download
-
Mangroves are a diverse and rich ecosystem, in which many animals are associated, including benthos. Species composition and occurrence of these animals are driven by the mangroves and tidal conditions. To examine how the benthic animal is distributed in mangrove habitats from northern Vietnam, two surveys in 2019 were conducted in Tien Hai Wetland Nature Reserve, which resulted in a total of 89 species, belonging to 56 genera and 35 families of zoobenthos.
18p vicaptainmarvel 21-04-2023 6 2 Download
-
Microsatellites are a ubiquitous occurrence in prokaryotic and eukaryotic genomes. Microsatellites have become one of the most popular classes of genetic markers due to their high reproducibility, multi-allelic nature, co-dominant mode of inheritance, abundance and wide genome coverage.
10p vinarcissa 21-03-2023 6 1 Download
-
The occurrence of a natural and unmodified highly sulfated chondroitin sulfate from Litopenaeus vannamei heads (sCS) is herein reported. Its partial digestion by Chondroitinases AC and ABC together with its electrophoretic migration profile revealed it as a highly sulfated chondroitin sulfate despite its average molecular weight being similar to CSA.
9p vihermione 06-01-2023 5 2 Download
-
This study investigated the prevalence of infection, and some of its morphological features, of the land snails Xerolenta obvia, Zebrina detrita, and Monacha samsunensis (Mollusca: Pulmonata) by metacercariae of Brachylaima sp. (Trematoda: Brachylaimidae) in Kastamonu, Turkey. The land snails were collected in spring and autumn. The prevalence rates of infection by metacercariae of Brachylaima sp. were 5.74%, 1.68%, and 17.35% in X. obvia, Z. detrita, and M. samsunensis, respectively. This study reports for the first time the natural occurrence of Brachylaima sp.
6p dolomite36 30-12-2021 6 0 Download
-
The invasive nature of Aedes albopictus, a competent vector of dengue, zika, yellow fever, and chikungunya viruses, has spread to many parts of the world. To date, there have been no report regarding the insecticide resistance status of Aedes albopictus populations along the Aegean coasts of Turkey. This study aims to confirm the occurrence of Aedes albopictus populations in the Aegean region of Turkey and test their susceptibility against different insecticide classes. Bioassay for susceptibility to Dikloro difenil trikloroetan (DDT) (4%), propoxur (0.1%), fenitrothion (1%), bendiocarb (0.
12p dolomite36 30-12-2021 9 0 Download
-
This novel phenomenon, initially identified from analysis of RNA-seq data, suggests intriguing new levels of gene expression regulation. However, the mechanism underlying naturally occurring transcriptional readthrough, as well as its regulatory consequences, still remain elusive. Furthermore, the readthrough response to stress has thus far not been investigated outside of mammalian species, and the occurrence of readthrough in many physiological and disease conditions remains to be explored.
7p vitzuyu2711 29-09-2021 9 1 Download
-
It has been recognized that a certain amount of habitat disturbance is a facilitating factor for the occurrence of natural hybridization, yet to date we are unaware of any studies exploring hybridization and reproductive barriers in those plants preferentially occupying disturbed habitats.
15p vijichea2711 28-05-2021 9 1 Download
-
Complaints of the arm, neck, and shoulders (CANS) have a multifactorial etiology, and, therefore, their assessment should consider both work-related ergonomic and psychosocial aspects. The Maastricht Upper Extremity Questionnaire (MUEQ) is one of a few specific tools available to evaluate the nature and occurrence of CANS in computer-office workers and the impact of psychosocial and ergonomic aspects on work conditions.
12p vianttinic2711 20-04-2021 11 2 Download
-
Spinal sagittal imbalance is a widely acknowledged problem, but there is insufficient knowledge regarding its occurrence. In some patients with lumbar disc herniation (LDH), their symptom is similar to spinal sagittal imbalance.
8p vioregon2711 22-02-2021 8 2 Download
-
Lecture Organic chemistry - Chapter 13: Alkynes: The C≡C Triple bond. This chapter presents the following content: Introduction to alkynes, natural occurrence and uses of alkynes, physical properties of alkynes, spectroscopy of alkynes, nomenclature of alkynes, acid-base properties of alkynes,...
23p larachdumlanat122 26-11-2020 29 0 Download
-
Roving surveys were taken from September 2015 to 2017 covering Theni and Dindigul districts of Tamil Nadu, India aiming to document the occurrence of major insect pests and their natural enemies in cauliflower crop at different elevations.
11p caygaocaolon8 07-11-2020 4 2 Download
-
Aflatoxins are a group of secondary metabolites produced by certain toxigenic strains of Aspergillus flavus on various food and feed commodities. These group of mycotoxins are highly oxygenated heterocyclic compounds. Aflatoxins occupy the most important position among mycotoxins in view of their potent carcinogenic nature and high frequency of occurrence under natural conditions. Rice (Oryza sativa L.) is consumed by millions of people all over the world in different forms.
13p angicungduoc8 07-11-2020 12 2 Download
-
The analysis of correlations of amino acid occurrences in globular domains has led to the development of statistical tools that can identify native contacts – portions of the chains that come to close distance in folded structural ensembles. Here we introduce a direct coupling analysis for repeat proteins – natural systems for which the identification of folding domains remains challenging.
10p vikentucky2711 24-11-2020 8 1 Download