Glass-metal seal

The contact belt of the gate assembly is the main part of high pressure fittings. The serviceability of the fittings assembly as whole depends on the air-tightness and quality of the mating surfaces. The technology of diamond burnishing allows to increase the interface of the nodes by red ucing the surface roughness of the metal-to-metal seal. The real experience for improving of the fittings contact belt due to the use of diamond burnishing of the nozzles seats and the conical surface of the rods.

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Use of Ophthalmic Sonography to Evaluate for Intraocular Foreign Body in Both Outpatient and Emergency Department/Urgent Care Patients

Journal of Diagnostic Medical Sonography ◽

10.1177/87564793211033232 ◽

2021 ◽

pp. 875647932110332

Author(s):

Patrick J. Fish

Keyword(s):

Emergency Department ◽

Foreign Body ◽

Foreign Bodies ◽

Outpatient Setting ◽

Intraocular Foreign Body ◽

Urgent Care ◽

Posterior Chamber ◽

Emergency Department Setting ◽

Before And After ◽

Glass Metal

Intraocular foreign bodies (IOFB) present differently depending on the type of material (wood, glass, metal) for the IOFB, extent of the injury, and location of the injury. IOFB and the injury can cause a perforation or penetration of the globe which can require more extensive treatment including surgery. Proper evaluation of the IOFB and injury can help to determine extent of the injury, the prognosis of the vision, and health of the eye before and after treatment but may be difficult for the physician depending on the view of the posterior chamber being compromised by media or simply by patient sensitivity. The extent of the injury may also prevent proper evaluation due to swelling, lacerations on the lids, or pain. Proper ophthalmic sonography can provide a quick evaluation of the globe for any IOFB in both the outpatient setting as well as emergency department setting. Evaluation via sonography may allow the physician to accurately diagnose and properly treat the patient to help restore and prevent further loss of vision.

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Disinfection of SARS-CoV-2 Contaminated Surfaces of Personal Items with UVC-LED Disinfection Boxes

Viruses ◽

10.3390/v13040598 ◽

2021 ◽

Vol 13 (4) ◽

pp. 598

Author(s):

Maren Bormann ◽

Mira Alt ◽

Leonie Schipper ◽

Lukas van de Sand ◽

Mona Otte ◽

...

Keyword(s):

Severe Acute Respiratory Syndrome ◽

Close Contact ◽

Credit Cards ◽

Organic Matrix ◽

Viral Loads ◽

Small Aerosol ◽

Time Periods ◽

Respiratory Droplets ◽

Glass Metal

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is transmitted from person to person by close contact, small aerosol respiratory droplets, and potentially via contact with contaminated surfaces. Herein, we investigated the effectiveness of commercial UVC-LED disinfection boxes in inactivating SARS-CoV-2-contaminated surfaces of personal items. We contaminated glass, metal, and plastic samples representing the surfaces of personal items such as smartphones, coins, or credit cards with SARS-CoV-2 formulated in an organic matrix mimicking human respiratory secretions. For disinfection, the samples were placed at different distances from UVC emitting LEDs inside commercial UVC-LED disinfection boxes and irradiated for different time periods (up to 10 min). High viral loads of SARS-CoV-2 were effectively inactivated on all surfaces after 3 min of irradiation. Even 10 s of UVC-exposure strongly reduced viral loads. Thus, UVC-LED boxes proved to be an effective method for disinfecting SARS-CoV-2-contaminated surfaces that are typically found on personal items.

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Hermetic glass-to-metal seal assembly and method of manufacturing it

Sealing Technology ◽

10.1016/s1350-4789(11)70074-5 ◽

2011 ◽

Vol 2011 (3) ◽

pp. 14

Keyword(s):

Metal Seal ◽

Seal Assembly

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Marine Debris: Sources, Impacts and Reduction Programs

Inquiry@Queen's Undergraduate Research Conference Proceedings ◽

10.24908/iqurcp.8268 ◽

2016 ◽

Author(s):

Peter Bishop

Keyword(s):

Human Health ◽

Marine Debris ◽

Fishing Gear ◽

Ecological Economic ◽

Monitoring Programs ◽

Management Plans ◽

Glass Metal

Marine debris is a major problem worldwide with ecological, economic, and human health impacts.Plastics, glass, metal, Styrofoam, rubber, and old fishing gear form the majority of the debris. Thepollution comes largely from land sources, although a portion of it is released by vessels. The litter affectswildlife, habitats, fisheries, and vessels that travel through the polluted areas. Recently, the severity ofthe problem is being recognized, and governments are acting. Monitoring programs have beenestablished to examine the extent of the problem, and management plans have been introduced to cleanup affected areas and to reduce the sources of the debris. Governments face technical, political, andfinancial barriers when tackling this issue. This report reviews the sources and impacts of the marinelitter, and examines the methods adopted by various countries and regions to tackle the problem.

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Modeling of heat transfer due to induction heating of laminated glass-metal materials

Thermophysics and Aeromechanics ◽

10.1134/s0869864321010091 ◽

2021 ◽

Vol 28 (1) ◽

pp. 87-102

Author(s):

O. N. Lyubimova ◽

M. A. Barbotko

Keyword(s):

Heat Transfer ◽

Induction Heating ◽

Laminated Glass ◽

Metal Materials ◽

Glass Metal

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A Computational Leakage Model for Solid Oxide Fuel Cell Compressive Seals

Journal of Fuel Cell Science and Technology ◽

10.1115/1.3117252 ◽

2011 ◽

Vol 8 (4) ◽

Cited By ~ 3

Author(s):

Christopher K. Green ◽

Jeffrey L. Streator ◽

Comas Haynes ◽

Edgar Lara-Curzio

Keyword(s):

Mixed Lubrication ◽

Solid Oxide ◽

Macroscopic Model ◽

Physical Parameters ◽

Oxide Fuel ◽

Predictive Tool ◽

Oak Ridge ◽

Leakage Model ◽

Metal Seal ◽

Metal Metal

One of the key obstacles precluding the maturation and commercialization of planar solid oxide fuel cells has been the absence of a robust sealant. A computational model has been developed in conjunction with leakage experiments at Oak Ridge National Laboratory. The aforementioned model consists of three components: a macroscopic model, a microscopic model, and a mixed lubrication model. The macroscopic model is a finite element representation of a preloaded metal-metal seal interface, which is used to ascertain macroscopic stresses and deformations. The microscale contact mechanics model accounts for the role of surface roughness in determining the mean interfacial gap at the sealing interface. In particular, a new multiscale fast Fourier transform-based model is used to determine the gap. An averaged Reynolds equation derived from mixed lubrication theory is then applied to approximate the leakage flow across the rough annular interface. The composite model is applied as a predictive tool for assessing how certain physical parameters (i.e., seal material composition, compressive applied stress, surface finish, and elastic thermophysical properties) affect seal leakage rates. The leakage results predicted by the aforementioned computational leakage model are then compared with experimental results.

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