PubMed Journals Articles About "ExxonMobil Drilling Offshore Guyana Unaffected Venezuela Navy Incident" RSS

19:54 EDT 25th March 2019 | BioPortfolio

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Showing "ExxonMobil Drilling Offshore Guyana Unaffected Venezuela Navy Incident" PubMed Articles 1–25 of 620

Validation of algorithms used in commercial off-the-shelf dive computers.

Whilst the US Navy has been very systematic about validating Navy dive computer algorithms, there has been little documented or published evidence of rigorous testing of the algorithms in commercial off-the-shelf dive computers. This paper reports the evaluation of four algorithms used in these - Bühlmann ZHL-16C; VPM-B; Suunto-RGBM; EMC-20H - by comparison with US Navy experimental dives with known decompression sickness outcomes.

Biodegradability enhancement of hydrolyzed polyacrylamide wastewater by a combined Fenton-SBR treatment process.

An efficient way to solve the environmental pollution deriving from hydrolyzed polyacrylamide (HPAM)-containing drilling wastewater is urgent. This work adopted a novel method coupling Fenton oxidation with sequencing batch reactor (SBR) to treat gas-field drilling wastewater successively. This Fenton-SBR process reduced COD, HPAM, NH-N and total phosphorus (TP) concentrations of drilling wastewater by 98.35%, 87.58%, 94.50% and 93.52%, respectively. While simulated HPAM wastewater with similar HPAM concent...

Accuracy of Implant Placement with a Navigation System, a Laboratory Guide, and Freehand Drilling.

Computer-aided surgery under navigation system guidance is widely applied in dental implant procedures. However, the accuracy of drilling with such navigation systems has not been comparatively evaluated alongside those of laboratory guide-based and freehand drilling. Therefore, this study aimed to compare the accuracies of these three drilling systems.

Arterial Hypertension register in private clinics in Venezuela: RHAVEN Study.

In Venezuela, no large studies have been conducted to determine the level of control of hypertension (HT).

Resurgence of Vaccine-Preventable Diseases in Venezuela as a Regional Public Health Threat in the Americas.

Venezuela's tumbling economy and authoritarian rule have precipitated an unprecedented humanitarian crisis. Hyperinflation rates now exceed 45,000%, and Venezuela's health system is in free fall. The country is experiencing a massive exodus of biomedical scientists and qualified healthcare professionals. Reemergence of arthropod-borne and vaccine-preventable diseases has sparked serious epidemics that also affect neighboring countries. In this article, we discuss the ongoing epidemics of measles and diphthe...

Effects of Political Instability in Venezuela on Malaria Resurgence at Ecuador-Peru Border, 2018.

Mass migration from Venezuela has increased malaria resurgence risk across South America. During 2018, migrants from Venezuela constituted 96% of imported malaria cases along the Ecuador-Peru border. Plasmodium vivax predominated (96%). Autochthonous malaria cases emerged in areas previously malaria-free. Heightened malaria control and a response to this humanitarian crisis are imperative.

Drilling in the dorid species Vayssierea cf. elegans (Gastropoda: Nudibranchia): Functional and comparative morphological aspects.

The drilling mode of feeding is known from two clades of Gastropoda: Caenogastropoda and Heterobranchia. However, the level of convergence and parallelism or homology among these two lineages is unclear. The morphology of the buccal complex is well studied for drilling caenogastropods, but poorly known for drilling nudibranchs. It is also unclear whether the drilling feeding mechanism is similar between inside gastropods. Accordingly, a comparison between the feeding mechanisms of drilling nudibranchs and c...

Occupational traumatic injuries among offshore seafood processors in Alaska, 2010-2015.

The U.S. Coast Guard and Federal Occupational Safety and Health Administration have identified the Alaskan offshore seafood processing industry as high-risk. This study used Coast Guard injury reports to describe patterns of traumatic injury among offshore seafood processors, as well as identify modifiable hazards.

The environmental friendliness of fuzzy-ball drilling fluids during their entire life-cycles for fragile ecosystems in coalbed methane well plants.

To protect the vulnerable ecosystems in coalbed methane(CBM) well plants from the pollution of drilling fluids, the environmental friendliness of fuzzy-ball drilling fluids was evaluated. Further, the combination of solidification and in-situ landfill were proposed to optimize their waste disposal. Firstly, the samples for tests were collected from the well plants. Then, their environment-related properties were evaluated with the indicator vector from wastewater perspective to monitor their environmental f...

Longitudinal Analysis of CAD/CAM Restoration Incorporation Rates into Navy Dentistry.

Computer-aided design/computer-aided manufacturing (CAD/CAM) has gained increasing popularity since the first commercially viable dental system was introduced in the mid-1980s. Digitally milled dental restorations can be fabricated chairside in the course of one dental appointment, reducing time, cost, and manpower when compared with traditional laboratory-fabricated analog restorations. Clinical performance, physical properties, and esthetics of digital restorations have been shown to be comparable to trad...

Rheumatoid Arthritis in French Guyana: Epidemiology and Characteristics.

Surgical drilling of curved holes in bone - a patent review.

Conventional surgical drills are rigid straight instruments used to make holes in bones. They lack the ability to follow a curved pathway, making them impractical for several surgical procedures. For this reason, there is a continuous need for improved devices for surgical drilling of curved holes. Areas Covered: This review provides a comprehensive overview and classification of the patent literature of surgical drills able to produce a curved hole. The goal is to identify the fundamental mechanical design...

Cancer incidence and all-cause mortality among civilian men and women employed by the Royal Norwegian Navy between 1950 and 2005.

We aimed to investigate cancer incidence and all-cause mortality in a cohort of 8358 civilians (5134 men and 3224 women) employed by the Royal Norwegian Navy at any time between 1950 and 2005.

Full and half-wavelength ultrasonic percussive drills.

Ultrasonic-percussive drills are a leading technology for small rock drilling applications where power and weight-on-bit are at a premium. The concept uses ultrasonic vibrations to excite an oscillatory motion in a free-mass, which then delivers impulsive blows to a drilling-bit. This is a relatively complex dynamic problem involving the transducer, the free-mass, the drilling-bit and, to a certain extent, the rock surface itself. This paper examines the performance of a full-wavelength transducer compared ...

A Novel, Perfused-Cadaver Simulation Model for Tourniquet Training in Military Medics.

Exsanguinating limb injury is a significant cause of preventable death on the battlefield and can be controlled with tourniquets. US Navy corpsmen rotating at the Navy Trauma Training Center receive instruction on tourniquets. We evaluated the effectiveness of traditional tourniquet instruction compared with a novel, perfused-cadaver, simulation model for tourniquet training.

Assessing the cumulative exposure of wildlife to offshore wind energy development.

Governments and developers are pursuing offshore wind energy to address climate change, but multiple wind farms may cumulatively affect wildlife populations. Assessments of cumulative effects must first calculate the cumulative exposure of a wildlife population to a hazard and then estimate how the exposure will affect the population. Our research responds to the first need by developing a model designed to assess how different wind farm siting scenarios cumulatively expose wildlife. The model assesses cumu...

Surviving Sepsis Campaign guidelines for a diver with DCI: case report.

Severe decompression illness (DCI) is an uncommon medical issue affecting divers and results mainly from rapid surfacing using inadequate decompression protocols. Massive gas embolism with central nervous system involvement often leads to a poor prognosis, with permanent residual neurologic defects. Moreover, DCI complicated with multiple organ dysfunction syndrome (MODS) is tremendously rare and difficult to cure, although hyperbaric oxygen (HBO2) therapy following the U.S. Navy Treatment Tables is a conse...

Heavy metal pollution of oil-based drill cuttings at a shale gas drilling field in Chongqing, China: A human health risk assessment for the workers.

With the flourish of shale gas industry in China, the characteristic hazardous waste, oil-based drill cuttings (OBDC), was also produced in large quantities. Unlike traditional petroleum industry, shale gas exploitation covers a wider area and there are more well sites, the adverse effects of OBDC piled up around well sites are even greater. This study investigated the pollution status and leaching toxicity of eight heavy metals (Cd, Cr, Cu, Hg, Mn, Ni, Pb and Zn) in OBDC of shale gas exploitation, and eval...

Neurovascular anatomy around the knee: Relevance of the dangers of self-drilling external fixator pin tips.

With external fixation of the femur and tibia, iatrogenic injury to neurovasculature from self-drilling tips of fixation pins is an important consideration in pin placement. Precise knowledge of the neurovascular anatomy in the distal femur and proximal tibia is important to limit potential pin misplacement.

Radiocesium in North Pacific coastal and offshore areas of Japan within several months after the Fukushima accident.

We measured activity concentrations of radiocesium (Cs and Cs) in seawater samples collected in North Pacific coastal and offshore areas of Japan within several months after the Fukushima Dai-ichi Nuclear Power Plant (FNPP1) accident in March 2011, including archived seawater samples whose radiocesium concentrations were previously reported to be below detection limits. By merging 329 new data with published results, we succeeded in reconstructing the temporal changes in activity concentrations and inventor...

Round Window Niche Drilling with Intratympanic Steroid Is a Salvage Therapy of Sudden Hearing Loss.

To explore the effectiveness and safety of round window niche drilling combined with intratympanic methylprednisolone injection for the salvage treatment of sudden sensorineural hearing loss (SSNHL) and its associated tinnitus after failed primary treatment.

Brief report: Pre- and post-deployment prevalence of colonization among U.S. Navy submariners.

FINDRISC Modified for Latin America As A Screening Tool For Persons With Impaired Glucose Metabolism In Ciudad Bolivar, Venezuela.

The Finnish Diabetes Risk Score (FINDRISC) includes anthropometric, metabolic, and lifestyle factors that predict type 2 diabetes mellitus (T2DM). The objective of this study was to evaluate the FINDRISC modified for Latin America (LA-FINDRISC) as a screening tool for persons with impaired glucose metabolism in Ciudad Bolívar - Venezuela.


Venezuela's Infant Death Rate Rises Amid Worsening Humanitarian Crisis.

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