Measurement of Saturated Water Absorption of the Contamination Layer Deposited on Insulator Surface

2019 ◽  
Vol 19 (22) ◽  
pp. 10804-10811
Author(s):  
Bin Cao ◽  
Liming Wang ◽  
Fanghui Yin
Keyword(s):  
Water Absorption ◽  
Insulator Surface ◽  
Saturated Water

Research on the Criterion and Classification of Swelling Rock

2011 ◽  
Vol 261-263 ◽  
pp. 1836-1840
Author(s):  
Xun Guo Zhu
Keyword(s):  
Water Absorption ◽  
Soft Rock ◽  
Saturated Water ◽  
Swelling Rock

Criterion and classification are two important content of swelling soft rock research. On the basis of the study of predecessors’ achievements, the percentage of hydrophilic minerals is considered as a key index of the new standard, and the saturated water absorption, limit swelling increment, limit swelling force are considered as main indexes. Finally, the new standard is used to analyze and study on the projects in references.

scholarly journals Pattern Dynamics of Vegetation Growth With Saturated Water Absorption

2021 ◽  
Vol 9 ◽  
Author(s):  
Li Li ◽  
Jia-Hui Cao ◽  
Xin-Yue Bao
Keyword(s):  
Water Absorption ◽  
Vegetation Dynamics ◽  
Vegetation Pattern ◽  
Typical Feature ◽  
Water Model ◽  
Absorption Effect ◽  
Vegetation Growth ◽  
Pattern Dynamics ◽  
Saturated Water ◽  
Water Absorption Effect

Regular pattern is a typical feature of vegetation distribution and thus it is important to study the law of vegetation evolution in the fields of desertification and environment conservation. The saturated water absorption effect between the soil water and vegetation plays an crucial role in the vegetation patterns in semi-arid regions, yet its influence on vegetation dynamics is largely ignored. In this paper, we pose a vegetation-water model with saturated water absorption effect of vegetation. Our results show that the parameter 1/P, which is conversion coefficient of water absorption, has a great impact on pattern formation of vegetation: with the increase of P, the density of vegetation decrease, and meanwhile it can induce the transition of different patterns structures. In addition, we find that the increase of appropriate precipitation can postpone the time on the phase transition of the vegetation pattern. The obtained results systematically reveal the effect of saturated water absorption on vegetation systems which well enrich the findings in vegetation dynamics and thus may provide some new insights for vegetation protection.

scholarly journals Study on Water Absorption–Dehydration Characteristics for SAP Composite Soil for Rainwater Harvesting

Water ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2380
Author(s):  
Youwei Qin ◽  
Tao Yang ◽  
Siyuan Wang ◽  
Fangling Hou ◽  
Pengfei Shi ◽  
...  
Keyword(s):  
Water Absorption ◽  
Water Content ◽  
Rainwater Harvesting ◽  
Soil Column ◽  
Comparative Investigation ◽  
Absorption Capacity ◽  
Superabsorbent Polymer ◽  
Saturated Water ◽  
Saturated Water Content ◽  
Cinnamon Soil

As a water absorption material, superabsorbent polymer (SAP) has gained its popularity in agriculture and environmental remediations. This study conducted a comparative investigation on saturated water content of cinnamon soil mixed with SAP. Two SAPs, SAP1 and SAP2, with different behaviors were tested, where SAP1 is an organic superabsorbent polymer, and SAP2 is polyacrylic acid sodium salt polymer. The saturated water content of SAP composite cinnamon soil was investigated with the weighing method. The repeated water absorption capacity and dehydration behavior of SAP composite soil under different designed rainfall intensity were investigated with a soil column tester. The results showed that (1) cinnamon soil mixed with SAP increased the saturated soil water content, and SAP1 was more effective than SAP2; (2) SAP held strong water absorption ability and recycling efficiency with eight repeated absorption–dehydration tests; (3) the average dehydration time for SAP composite soil were 626 h and 1214 h under 5-year and 10-year design rainfall intensities.

scholarly journals OH-Free Phenyl Modified Siloxane Low-Melting Glasses with Ultra Low Saturated Water-Absorption

2006 ◽  
Vol 114 (1331) ◽  
pp. 660-664
Author(s):  
Minoru KUNIYOSHI ◽  
Masahide TAKAHASHI ◽  
Yomei TOKUDA ◽  
Toshinobu YOKO
Keyword(s):  
Water Absorption ◽  
Saturated Water

scholarly journals Optimization of Design Mix Proportion for Saturated Water Absorption of High Performance Concrete

2018 ◽  
Vol 7 (1) ◽  
pp. 24-27
Author(s):  
M. Akila . ◽  
S. Chithra .
Keyword(s):  
Water Absorption ◽  
High Performance ◽  
High Performance Concrete ◽  
Signal To Noise Ratio ◽  
Copper Slag ◽  
Fine Aggregate ◽  
Nano Silica ◽  
Saturated Water ◽  
Mix Proportion ◽  
Water Curing

This study involves the optimization of design mix proportion for saturated water absorption of high performance concrete (HPC) by Taguchi Method. In the present investigation, saturated water absorption test on 25 HPC mixes specimens made with colloidal nano silica and copper slag as replacement of cement and fine aggregate respectively has been conducted at the age of 28 days and 90 days of water curing. The concrete mixes has been replaced by 1%, 1.5%, 2%, 2.5%, 3% of nano silica and copper slag of 10%, 20%, 30%, 40%, 50%. From Signal-to-Noise ratio, the optimal parametric combination for saturated water absorption has been obtained. The Analysis of Variance has been done on experimental data values. The percentage contribution of the factors towards saturated water absorption is identified. The nano silica contributes towards less water absorption in 28 days curing, while the Copper slag found to the major contributing factor for the cause after the 90 days tenure of water curing.

Swelling Potential Indexes of Swelling Rock in Zhangjiakou District

2010 ◽  
Vol 163-167 ◽  
pp. 2791-2797
Author(s):  
Dong Wang ◽  
Guo Xiang Yang ◽  
Fa Quan Wu ◽  
Jin Yu Dong
Keyword(s):  
Water Absorption ◽  
Linear Correlation ◽  
Specific Area ◽  
Liquid Limit ◽  
Comprehensive Analysis ◽  
Swelling Potential ◽  
Water Absorption Coefficient ◽  
Saturated Water ◽  
Mineral Components ◽  
Swelling Rock

The indexes to determine the swelling potential of swelling rocks are still not unified. A series of testing results of swelling rocks of Zhangjiakou showed that: the dry saturated water absorption and the specific area of swelling rock are all correlated linearly with the content of smectite and the correlation coefficient can be reached to 87% and 96% respectively; however, content of the montmorillonite and free expansive ratio is in nonlinear correlation, which indicated that the free expansive ratio, the dry saturated water absorption and specific area can all reflect the characters of mineral components in swelling rocks. However, the liquid limit and the plasticity index were all in linear correlation with the montmorillonite content, but value of them were lower than practical ones, so they can not be suitable indexes to determine the expansibility of swelling rocks. The larger the free swelling ratio was, the larger the expensive ratio under no load was, but they have no good correlations which indicated that the properties of swelling rocks was complex, as a result it is defective tightness to determine the swelling potential only by mineral components. The swelling force and the expansive ratio under no load were also in linear correlation, which meant they can all characterize the swelling characters of swelling rocks. The lager the dry saturated water absorption was, the poorer the durability was, but the dry saturated water absorption can not reflect the disintegrative totally. Through comprehensive analysis, we took the dry saturated water absorption, coefficient of disintegrative and swelling force as the indexes to determine the swelling potential of swelling rocks.

Replication of Wet Objects and Cells

1974 ◽  
Vol 32 ◽  
pp. 102-103
Author(s):  
S. Basu ◽  
D. F. Parsons
Keyword(s):  
Water Vapor Pressure ◽  
High Vacuum ◽  
Polystyrene Latex ◽  
Vacuum System ◽  
Saturated Water Vapor ◽  
Replication Method ◽  
New Methods ◽  
Saturated Water ◽  
Water Vapors ◽  
Intermediate Chamber

We are approaching the invasiveness of cancer cells from the studies of their wet surface morphology which should distinguish them from their normal counterparts. In this report attempts have been made to provide physical basis and background work to a wet replication method with a differentially pumped hydration chamber (Fig. 1) (1,2), to apply this knowledge for obtaining replica of some specimens of known features (e.g. polystyrene latex) and finally to realize more specific problems and to improvize new methods and instrumentation for their rectification. In principle, the evaporant molecules penetrate through a pair of apertures (250, 350μ), through water vapors and is, then, deposited on the specimen. An intermediate chamber between the apertures is pumped independently of the high vacuum system. The size of the apertures is sufficiently small so that full saturated water vapor pressure is maintained near the specimen.

Membrane-bound vesicles associated with the microvilli in the midgut of the freshwater microcrustacean, Daphnia magna

1983 ◽  
Vol 41 ◽  
pp. 480-481
Author(s):  
Patricia L. Jansma
Keyword(s):  
Daphnia Magna ◽  
Intestinal Epithelial Cells ◽  
Uranyl Acetate ◽  
Intestinal Epithelial ◽  
Chlamydomonas Reinhardii ◽  
Thin Sections ◽  
Saturated Water ◽  
Cacodylate Buffer ◽  
Membrane Bound ◽  
Ethanol Series

The presence of the membrane bound vesicles or blebs on the intestinal epithelial cells has been demonstrated in a variety of vertebrates such as chicks, piglets, hamsters, and humans. The only invertebrates shown to have these microvillar blebs are two species of f1ies. While investigating the digestive processes of the freshwater microcrustacean, Daphnia magna, the presence of these microvillar blebs was noticed.Daphnia magna fed in a suspension of axenically grown green alga, Chlamydomonas reinhardii for one hour were narcotized with CO2 saturated water. The intestinal tracts were excised in 2% glutaraldehyde in 0.2 M cacodyl ate buffer and then placed in fresh 2% glutaraldehyde for one hour. After rinsing in 0.1 M cacodylate buffer, the sample was postfixed in 2% OsO4, dehydrated with a graded ethanol series, infiltrated and embedded with Epon-Araldite. Thin sections were stained with uranyl acetate and Reynolds lead citrate before viewing with the Philips EM 200.

ESEM - A multipurpose surface Electron Microscope

1986 ◽  
Vol 44 ◽  
pp. 632-633 ◽  
Author(s):  
G.D. Danilatos
Keyword(s):  
Electron Microscope ◽  
Room Temperature ◽  
Environmental Scanning ◽  
Gas Composition ◽  
Saturated Water Vapor ◽  
Surface Electron ◽  
Current State ◽  
Saturated Water ◽  
New Type ◽  
Temperature And Pressure

Over recent years a new type of electron microscope - the environmental scanning electron microscope (ESEM) - has been developed for the examination of specimen surfaces in the presence of gases. A detailed series of reports on the system has appeared elsewhere. A review summary of the current state and potential of the system is presented here.The gas composition, temperature and pressure can be varied in the specimen chamber of the ESEM. With air, the pressure can be up to one atmosphere (about 1000 mbar). Environments with fully saturated water vapor only at room temperature (20-30 mbar) can be easily maintained whilst liquid water or other solutions, together with uncoated specimens, can be imaged routinely during various applications.

In-Situ Observation of Clay Minerals Hydrated and Intercalated With Liquid Chemicals Using Film-Sealed Environmental Cell

1980 ◽  
Vol 38 ◽  
pp. 208-209 ◽  
Author(s):  
K. Fukushima ◽  
N. Kohyama ◽  
A. Fukami
Keyword(s):  
Carbon Film ◽  
Resolving Power ◽  
In Situ Observation ◽  
Interlayer Water ◽  
Saturated Water ◽  
Structure Changes ◽  
Environmental Cell ◽  
Gas Layer ◽  
20 Nm

A film-sealed high resolution environmental cell(E.C) for observing hydrated materials had been developed by us(l). Main specification of the E.C. is as follows: 1) Accelerated voltage; 100 kV. 2) Gas in the E.C.; saturated water vapour with carrier gas of 50 Torr. 3) Thickness of gas layer; 50 μm. 4) Sealing film; evaporated carbon film(20 nm thick) with plastic microgrid. 5) Resolving power; 1 nm. 6) Transmittance of electron beam; 60% at 100 kV. The E.C. had been successfully applied to the study of hydrated halloysite(2) (3). Kaolin minerals have no interlayer water and are basically non-expandable but form intercalation compounds with some specific chemicals such as hydrazine, formamide and etc. Because of these compounds being mostly changed in vacuum, we tried to reveal the structure changes between in wet air and in vacuum of kaolin minerals intercalated with hydrazine and of hydrated state of montmori1lonite using the E.C. developed by us.

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