Results 31 to 40 of about 960,076 (299)
Railway Subgrade Deformation Control of Shield Tunnel Underpassing with Pipe Roof Support Method
Chengshi guidao jiaotong yanjiu[Objective] Under the disturbance of adjacent construction, the shield tunneling underpassing construction will have a certain impact on the subgrade settlement.
JIANG Jianjun +4 more
doaj +1 more source
Zhongguo dianli, 2022 In view of the low efficiency of the existing inspection strategy, this paper proposes an optimization strategy of multi-group inspection paths of distribution equipment, which includes equipment information, in order to improve the scientific in the ...
Chaoqiang CHEN +4 more
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On the Choice of Concrete Strength Inspection Methods of Ready-built Structures [PDF]
Инженерно-строительный журнал, 2011 The classification of concrete strength estimation methods used in the inspection of buildings and structures is given. Instrumentation working hours, the cost of equipment and work performance for different methods are considered.
A.V. Ulybin
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Queues with inspection cost: To see or not to see?
Queueing SystemsConsider an M/M/1-type queue where joining attains a known reward, but a known waiting cost is paid per time unit spent queueing. In the 1960s, Naor showed that any arrival optimally joins the queue if its length is less than a known threshold. Yet acquiring knowledge of the queue length often brings an additional cost, e.g., website loading time or ...
Jake Clarkson +2 more
openaire +2 more sources
You-qi chuyun, 2020 The phenomenon of oil stealing from long-distance oil and gas pipelines in China is increasing. Once the pipelinefails, it will bring huge safety risks to the operation of the enterprise and the personal property of the people.
Pengchao CHEN +6 more
doaj +1 more source
Autonomous Robotic System using Non-Destructive Evaluation methods for Bridge Deck Inspection
, 2017 Bridge condition assessment is important to maintain the quality of highway roads for public transport. Bridge deterioration with time is inevitable due to aging material, environmental wear and in some cases, inadequate maintenance.
Berendsen, Tony +4 more
core +1 more source
Extended Periodic Inspection Policies for a Single Unit System Subject to Shocks
IEEE Access, 2020 In this paper, two types of failures are taken into account to extend the classical periodic inspection policy for a single unit system when it has failed, in which type I failure can be rectified by a minimal repair and type II failure should be removed
Jing Wang, Wenjie Dong, Zhigeng Fang
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Optimization Method of Pipeline Inspection Period Considering Corrosion Defects
Shiyou jixie, 2020 Internal inspection is an important means to identify risks and ensure the safe operation of oil and gas pipelines. A cost-based optimization method with a failure probability threshold as a decisive variable is proposed to balance risk and cost, and ...
Zhang Jie +6 more
doaj
A Planning Model for Inspection and Replacement of Pipes in a Refinery Plant
Chemical Engineering Transactions, 2017 Corrosion is a major safety issue that can lead to unexpected failures in refinery plants. Ensuring the safety of refinery processes from corrosion requires regular maintenance procedures such as the inspection and replacement of pipes, which are ...
K. Tak, J. Kim
doaj +1 more source
FEBS Open Bio, EarlyView.Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn +4 more
wiley +1 more source