5 results match your criteria o-rings estimated

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Reliability Prediction of Acrylonitrile O-Ring for Nuclear Power Applications Based on Shore Hardness Measurements.

Polymers (Basel) 2021 Mar 19;13(6). Epub 2021 Mar 19.

Department of Manufacturing Engineering, Universidad Nacional de Educación a Distancia (UNED), 28040 Madrid, Spain.

The degradation of polymeric components is of considerable interest to the nuclear industry and its regulatory bodies. The objective of this work was the development of a methodology to determine the useful life-based on the storage temperature-of acrylonitrile O-rings used as mechanical sealing elements to prevent leakages in nuclear equipment. To this aim, a reliability-based approach that allows prediction of the use-suitability of different storage scenarios (that involve different storage times and temperatures) considering the further required in-service performance, is presented. Read More

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Cow-calf performance, forage utilization, and economics of warm-season annual baleage in beef cattle winter feeding systems.

Transl Anim Sci 2020 Jan 9;4(1):376-384. Epub 2019 Nov 9.

Department of Animal Sciences, Auburn University, Auburn, AL.

A 52-d winter feeding trial was conducted to determine animal performance, utilization, and economics of pearl millet (PM) baleage, sorghum × sudangrass (SS) baleage, and "Tifton 85" bermudagrass (B) hay for lactating beef cow-calf pairs. Cone (C) and open-shaped (O) rings were evaluated for potential to minimize forage wastage. The experiment was a completely randomized design with a 3 × 2 factorial arrangement of treatments for each forage type × hay ring (3 cow-calf pairs per treatment; 2 replications per treatment). Read More

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January 2020

Multidisciplinary Development of a Low-Cost Gastroschisis Silo for Use in Sub-Saharan Africa.

J Surg Res 2020 11 6;255:565-574. Epub 2020 Jul 6.

Department of Surgery, Duke University, Durham, North Carolina; Duke Global Health Institute, Duke University, Durham, North Carolina. Electronic address:

Background: Gastroschisis silos are often unavailable in sub-Saharan Africa (SSA), contributing to high mortality. We describe a collaboration between engineers and surgeons in the United States and Uganda to develop a silo from locally available materials.

Methods: Design criteria included the following: < $5 cost, 5 ± 0. Read More

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November 2020

Effect of Implant Location on Palateless Complete Overdenture Retention: an Study.

J Oral Maxillofac Res 2018 Jul-Sep;9(3):e3. Epub 2018 Sep 30.

Department of Prosthodontics, Faculty of Dentistry, Mansoura University, MansouraEgypt.

Objectives: The purpose of this study was to evaluate effect of implant location on initial retention values of palateless complete overdentures retained by four o-rings at different inter-implant distances.

Material And Methods: Two standard acrylic models representing completely edentulous maxillary arches were used. Four single piece ball type implants were placed in each model. Read More

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September 2018

Passive dosing yields dissolved aqueous exposures of crude oil comparable to the CROSERF (Chemical Response to Oil Spill: Ecological Effects Research Forum) water accommodated fraction method.

Environ Toxicol Chem 2018 11 5;37(11):2810-2819. Epub 2018 Oct 5.

Geochemical and Environmental Research Group, Texas A&M University, College Station, Texas, USA.

The Chemical Response to Oil Spill: Ecological Effects Research Forum's water accommodated fraction procedure was compared with 2 alternative techniques in which crude oil was passively dosed from silicone tubing or O-rings. Fresh Macondo oil (MC252) was dosed at 30 mg/L using each approach to investigate oil dissolution kinetics, which was monitored by fluorometry as estimated oil equivalents (EOEs). Subsequent experiments with each dosing method were then conducted at multiple oil loadings. Read More

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November 2018
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