نتایج جستجو برای: corrugated drainage pipe

تعداد نتایج: 60323  

2016
Jian Xu Xia Liu Ze-yu Wu Xiao-dong Chen Peng Lun Yan Zhao Bing Chen Chang-qing Ding Peng Sun

Background: We introduce a new catheter-based minimally invasive approach via frontal tuber for removing hypertensive intraventricular hemorrhage(IVH), and further compare its treatment efficacy with conventional external ventricular drainage (EVD). Methods: This study is prospective and randomized. Sixty cases of secondary intraventricular cast hemorrhage patients were randomly divided into tw...

2016
Ben Geng Cai Yun Bo Li Hui Feng Ma Wei Xiang Jiang Qiang Cheng Tie Jun Cui

One-dimensional (1D) subwavelength corrugated metal structures has been described to support spoof surface plasmon polaritons (SPPs). Here we demonstrate that a periodically modulated 1D subwavelength corrugated metal structure can convert spoof SPPs to propagating waves. The structure is fed at the center through a slit with a connected waveguide on the input side. The subwavelength corrugated...

Journal: :Journal of Polymers and The Environment 2022

High-density polyethylene (HDPE) pipe is one of the materials interest for use in road drainage systems. The combination ultraviolet (UV) light, temperature, and moisture can produce weak spots lead to degradation during storage, installation, repair process. objective this study was evaluate changes chemical, morphological structure, thermomechanical properties recycled virgin pipes under UV e...

Journal: :Physical review letters 2014
Santtu T T Ollila Colin Denniston Mikko Karttunen Tapio Ala-Nissila

We examine pressure-driven nonequilibrium transport of linear, circular, and star polymers through a nanochannel containing a rectangular pit with full hydrodynamic interactions and thermal fluctuations. We demonstrate that with sufficiently small pressure differences, there is contour length-dependent entropic trapping of the polymer in the pit when the pit and the polymer sizes are compatible...

Journal: :E3S web of conferences 2021

Polymer corrugated pipelines are a very promising type of construction that has many advantages over concrete and reinforced structures widely used today for collecting diverting surface runoff from residential areas enterprise sites. To collect divert sites, the hydraulic characteristics drainage system made polymer culverts ACO Qmax studied by computational experimental methods. The experimen...

Journal: :Bioresources 2022

The performance of chitosan biopolymer-bentonite microparticle system in recycled pulp colloidal suspension old corrugated containers with different electrical conductivities was considered. Various instrumental analyses (atomic force microscopy, field emission scanning electron dynamic light scattering, and Fourier-transform infrared spectroscopy) were applied to characterize the chemicals. re...

Journal: :Mosti ta tunelì: teorìâ, doslìdžennâ, praktika 2021

Purpose. The purpose of the work is to establish real technical condition transport structures made corrugated metal on basis analysis scientific and sources.And analyze experience operation in soil environment form generalize problems ensuring reliability durability conditions railways highways Ukraine. Methodology. To achieve this goal, a review sources regulations different countries facilit...

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