نتایج جستجو برای: compaction map

تعداد نتایج: 204428  

2007
Balaji Vasan Srinivasan Min Wu Gregory K. Wallace

Transform coding forms an integral part of compression techniques. In transform coding a reversible linear transform is used to map the image into a set of coefficients which are then quantized and coded. The advantage of using a transform is that it packs the data into a lesser number of coefficients. The main purpose of using the transform is thus to achieve energy compaction. The type of tra...

طهماسبی, منا , مصدقی, محمدرضا , همت, عباس , وفاییان, محمود ,

For prevention of soil compaction, knowledge of allowable compression stress limit (compaction strength) in soil is important. Pre-compaction stress ( σpc) was introduced as soil compaction strength and often used as a criterion for evaluation of soil susceptibility to compaction. In this research, pre-compaction stress was measured for a sandy loam soil with plate sinkage (PST) and confined co...

Journal: :Soft matter 2017
Himadri S Samanta Pavel I Zhuravlev Michael Hinczewski Naoto Hori Shaon Chakrabarti D Thirumalai

Folded states of single domain globular proteins are compact with high packing density. The radius of gyration, Rg, of both the folded and unfolded states increase as Nν where N is the number of amino acids in the protein. The values of the Flory exponent ν are, respectively, ≈⅓ and ≈0.6 in the folded and unfolded states, coinciding with those for homopolymers. However, the extent of compaction...

Methods of preparing test specimens in laboratories are particularly important. It also holds true in terms of compaction procedure in predicting pavement performance. The currently available laboratory compactor cannot adequately replicate field compaction conditions, especially the Stone Mastic Asphalt (SMA) mixture. The essential element of SMA mixture comprises of stones that are placed nex...

2015
Yunshan Han Yanli Dong Yuanlong Wang Wei Duan Weihua Qin

To investigate the dynamic compaction mechanism of loess-filled embankment, a computational model of unit volume compaction effort was proposed as compared with the compaction test. The energy level of dynamic compaction used in actual projects was also considered. The differences between the compaction test and the unit volume compaction effort in the actual projects were studied. And also, th...

2018
Jaime Pulido Fentanes Iain Gould Tom Duckett Simon Pearson Grzegorz Cielniak

This paper presents an automated method for creating spatial maps of soil condition with an outdoor mobile robot. Effective soil mapping on farms can enhance yields, reduce inputs and help protect the environment. Traditionally, data are collected manually at an arbitrary set of locations, then soil maps are constructed offline using Kriging, a form of Gaussian process regression. This process ...

Journal: :Infrastructures 2023

Vibratory rollers are mainly used for the near-surface compaction of granular media a wide variety construction tasks. In addition to pronounced depth effect, vibratory have offered possibility work-integrated control (intelligent compaction) decades. State-of-the-art measurement values intelligent (ICMVs) only take into account, if at all, constant geometry contact area between drum and soil. ...

ژورنال: علوم آب و خاک 2012
مهدی خوشخو‌, , سید محمدعلی زمردیان, ,

Internal erosion is the second major reason for earth dam's failure after overtopping. One of the effective factors in internal erosion in earth dams is the clay minerals used in dams as well as the effects of compaction efforts on soil in sample preparation. In this research, internal erosion and the effect of clay minerals and compaction effort on internal erosion were investigated. For this ...

2015

Compaction is a mechanical process in which an earthen material is made more dense. The densification occurs as a direct result of the mechanical loading, and is essentially complete at the end of the loading. Volume changes are incurred as a result of a reduction in the quantity of air voids— water content remaining constant. Since it is impractical to squeeze out all the air, the as-compacted...

Journal: :journal of dentistry, tehran university of medical sciences 0
mohsen aminsobhani assistant professor, dental research center, dentistry research institute, department of endodontics, faculty of dentistry, tehran university of medical sciences, tehran, iran ; school of dentistry, aja university of medical sciences, tehran, iran. abdollah ghorbanzadeh assistant professor, dental research center, dentistry research institute, department of endodontics, faculty of dentistry, tehran university of medical sciences, tehran, iran. mohammad reza sharifian assistant professor, dental research center, dentistry research institute, department of endodontics, faculty of dentistry, tehran university of medical sciences, tehran, iran. sara namjou postgraduate student, department of endodontics, school of dentistry, tehran university of medical sciences, tehran, iran. mohamad javad kharazifard epidemiologist, dental research center, dental school, tehran university of medical sciences, tehran, iran.

the aim of this study was to introduce modified continuous wave compaction (mcwc) technique and compare its obturation quality with that of lateral compaction (lc), warm vertical compaction (wvc) and continuous wave compaction techniques (cwc). the obturation time was also compared among the four techniques.sixty-four single-rooted teeth with 0-5° root canal curve and 64 artificially created ro...

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