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ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57

Linkage and association analysis of circulating vitamin D and parathyroid hormone identifies novel loci in Alaska Native Yup’ik people

Background Vitamin D deficiency is a well-documented public health issue with both genetic and environmental determinants. Populations living at far northern latitudes are vulnerable to vitamin D deficiency and its health sequelae, although consumption of traditional native dietary pattern rich in ...

Regulation of StAR by the N-terminal Domain and Coinduction of SIK1 and TIS11b/Znf36l1 in Single Cells

The cholesterol transfer function of steroidogenic acute regulatory protein (StAR) is uniquely integrated into adrenal cells, with mRNA translation and protein kinase A (PKA) phosphorylation occurring at the mitochondrial outer membrane (OMM). The StAR C-terminal cholesterol-binding domain (CBD) initiates ...

Challenges, Opportunities and Learnings of Brown Field Re-Entry; A Case Study of XYZ Field in Niger Delta

Abstract A brown field is an oil or gas asset that has matured to a production plateau or even progressed to a stage of declining production, where significant oil or gas reserves have been produced. Acquisition of brown fields all over the world was on the increase prior to the current volatility ...

Modeling succession of key resource-harvesting traits of mixotrophic plankton

Unicellular eukaryotes make up the base of the ocean food web and exist as a continuum in trophic strategy from pure heterotrophy (phagotrophic zooplankton) to pure photoautotrophy (‘phytoplankton'), with a dominance of mixotrophic organisms combining both strategies. Here we formulate a trait-based ...

Effects of salinity change on two superoxide dismutases (SODs) in juvenile marbled eel Anguilla marmorata

Salinity is one of the most important factors that affect the fish growth and survival. Superoxide dismutases (SODs), as the primary antioxidant enzymes, play a first role in the process of preventing oxidative stress caused by excessive superoxide anion (O 2−) in living organisms. In the present study, ...

Genetic and pathogenic difference between Streptococcus agalactiae serotype Ia fish and human isolates

Background Streptococcus agalactiae (GBS) is a common pathogen to infect newborn, woman, the elderly, and immuno-compromised human and fish. 37 fish isolates and 554 human isolates of the GBS in 2007–2012 were investigated in serotypes, antibiotic susceptibility, genetic difference and pathogenicity ...

A chronicle of the changes undergone by a maritime territory, the Bay of Toulon (Var Coast, France), and their consequences on PCB contamination

This study evaluated the distribution of polychlorinated biphenyls (PCBs) in 39 surface sediment samples and four cores collected in Toulon Bay, a semiclosed area submitted to various anthropogenic inputs. The concentration of PCBs in the superficial sediment samples ranged from 1.7 to 2530 ng g−1 dry ...

Mapping Uncertainty Due to Missing Data in the Global Ocean Health Index

Indicators are increasingly used to measure environmental systems; however, they are often criticized for failing to measure and describe uncertainty. Uncertainty is particularly difficult to evaluate and communicate in the case of composite indicators which aggregate many indicators of ecosystem condition. ...

Distinct Differentiation Programs Triggered by IL-6 and LPS in Teleost IgM+ B Cells in The Absence of Germinal Centers

Although originally identified as a B cell differentiation factor, it is now known that mammalian interleukin-6 (IL-6) only regulates B cells committed to plasma cells in response to T-dependent (TD) antigens within germinal centers (GCs). Even though adaptive immunity is present in teleost fish, these ...

Kin Recognition in a Clonal Fish, Poecilia formosa

Relatedness strongly influences social behaviors in a wide variety of species. For most species, the highest typical degree of relatedness is between full siblings with 50% shared genes. However, this is poorly understood in species with unusually high relatedness between individuals: clonal organisms. ...

Human-robot interaction underwater: Communication and safety requirements

Safety is of particular interest when performing research related to human-robot interaction in unpredictable and hazardous underwater environment. Special attention is devoted to safety requirements within FP7 project “CADDY - Cognitive Autonomous Diving Buddy” in order to reduce hazards during experiments, ...

Passive acoustic detection of diver based on SVM

In terms of divers equipped with open-circuit respirator, this paper studies the radiated mechanism of the divers' breathing signals. A SVM(Support Vector Machine) based approach to identify their radiated signal is proposed. In this method, the received signal is firstly processed using STFT(short-time ...

Prevalence of influenza A virus in live-captured North Atlantic gray seals: a possible wild reservoir

Influenza A virus (IAV) has been associated with multiple unusual mortality events (UMEs) in North Atlantic pinnipeds, frequently attributed to spillover of virus from wild-bird reservoirs. To determine if endemic infection persists outside of UMEs, we undertook a multiyear investigation of IAV in healthy, ...

Unravelling the relative roles of top‐down and bottom‐up forces driving population change in an oceanic predator

Abstract In the open ocean ecosystem, climate and anthropogenic changes have driven biological change at both ends of the food chain. Understanding how the population dynamics of pelagic predators are simultaneously influenced by nutrient‐driven processes acting from the “bottom‐up” and predator‐driven ...

Dry-Dock Inspection Methods for Improved Fouling Control Coating Performance

Dry docking is the scheduled time when the fouling control coating is assessed, the hull refurbished, and new coatings applied. The decisions made during this period will affect the performance of the ship for several years. Royal Caribbean Cruises Ltd. has funded research at the Florida Institute of ...

Effect of low doses of estradiol and tamoxifen on breast cancer cell karyotypes

Evidence supports a role of 17&-estradiol (E2) in carcinogenesis and the large majority of breast carcinomas are dependent on estrogen. The anti-estrogen tamoxifen (TAM) is widely used for both treatment and prevention of breast cancer; however, it is also carcinogenic in human uterus and rat liver, ...

Heavy Metal Distribution in Street Dust from Traditional Markets and the Human Health Implications

Street dust is a hazard for workers in traditional markets. Exposure time is longer than for other people, making them vulnerable to heavy metals in street dust. This study investigated heavy metal concentrations in street dust samples collected from different types of markets. It compared the results ...

Blood mercury levels and fish consumption in pregnancy: Risks and benefits for birth outcomes in a prospective observational birth cohort

Background To avoid exposure to mercury, government advice on fish consumption during pregnancy includes information on fish species to avoid and to limit, while encouraging consumption of least two portions of fish per week. Some women may, however, chose to avoid fish completely during pregnancy ...

Operational Challenges and Monitoring of a Polymer Pilot, Matzen Field, Austria

Summary Four main areas of uncertainty can be described in polymer-injection projects: Are we able to deliver the polymer solutions at the required quality to the wellhead? Are we able to inject polymers at the required quantity and quality? Are we producing sufficient incremental oil? Are we able ...

Identification and Extraction of New Feature for Zebrafish Discrimination

Physical tagging for animals has been a key requirement to discriminate their individuality. However, in small swimming animals like zebrafish, physical tagging is considered a painful, costly and a time-consuming process. In this paper, a computer-vision based method for identifying and extracting ...

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