Experiment Study on One Dimensional Vertical Soil Pole Seeper Infiltration of Unsaturated Clayey Sand

2011 ◽  
Vol 250-253 ◽  
pp. 3785-3789
Author(s):  
Qiang Qiang Miao ◽  
Zheng Han Chen ◽  
Qing Qing Zhu ◽  
Zhi Hua Yao ◽  
Jun Hao Zhang
Keyword(s):  
High Water ◽  
Measuring System ◽  
High Water Content ◽  
Dry Density ◽  
Experiment Study ◽  
Time Pass ◽  
Clayey Sand ◽  
One Dimensional ◽  
Water Head ◽  
The Relationship

Measuring system of soil moisture and water bedload LGD-Ⅲ was used in those tests . Infiltration law of one dimensional vertical soil poles were carried out profound studies,under different density and a constant water head . At the same time,the course of wetness front along with time pass away, infiltration law along with time pass away and different high water content along with time pass away were made a comprehensive studies , under different dry density. According to a great deal of test data, the relationship between wetness front and time was given to a function under different dry density.

scholarly journals ANGKA KAPANG DAN KHAMIR PADA LADA PUTIH ASAL BANGKA

2019 ◽  
Vol 5 (2) ◽  
pp. 101
Author(s):  
Oktavio Rosani ◽  
Devy Susanty ◽  
Ary Triyanto
Keyword(s):  
Moisture Content ◽  
Water Content ◽  
High Water ◽  
Quality Standard ◽  
High Water Content ◽  
White Pepper ◽  
Public Consumption ◽  
Mold And Yeast ◽  
The Relationship

Numbers of Mold and Yeast on White Pepper from BangkaWhite pepper is one of Indonesia's spices that are needed for both public consumption and exports. Post-harvest processing of white pepper by farmers is often done with unclean. Each source of white pepper has different water content and will affect the quality of white pepper. In this study, seven samples (S1, S2, S3, S4, S5, S6, S7) were from Bangka. All samples tested had higher water content than SNI quality standard (13%), but still below the quality standard 2 (18%). Sample S2 has the highest water content compared to other samples. Sample S1 and S2 have high Numbers of Mold and Yeast (AKK) and do not suitable with quality standart of BPOM. Of all samples, S2  had the highest AKK (5,51 x 104 colony / g) and sample S5 had the smallest AKK (8,8 x 102 colony / g). This shows the relationship between water content in white pepper with AKK. White pepper that has a high water content has a high AKK, whereas white pepper that has low moisture content has low AKK.Keywords: white pepper, Numbers of Mold and Yeast, moisture contentABSTRAKLada putih adalah salah satu rempah Indonesia  yang  banyak dibutuhkan baik untuk konsumsi masyarakat ataupun ekspor. Proses pengolahan pasca panen lada putih oleh petani sering dilakukan dengan tidak bersih. Setiap sumber lada putih memiliki kadar air yang berbeda dan akan mempengaruhi kualitas lada putih. Pada penelitian ini,tujuh sampel (S1, S2, S3, S4, S5, S6, S7)  berasal dari Bangka. Semua sampel yang di uji memiliki kadar air yang lebih tinggi dari standar mutu 1 SNI (13%), namun masih berada di bawah standar mutu 2 (18 %). Sampel S2 memiliki kadar air yang paling tinggi dibandingkan dengan sampel lainnya. Sampel S1 dan S2 memiliki  (Angka Kapang Khamir) AKK yang tinggi dan tidak memenuhi syarat mutu. BPOM. Dari semua sampel, sampel S2 memiliki AKK paling tinggi (5,51 x 104 koloni/g) dan sampel S5 memiliki AKK paling kecil (8,8 x 102 koloni/g). Hal ini menunjukan hubungan antara kadar air pada lada putih dengan AKK. Lada putih yang memiliki kadar air tinggi memiliki AKK yang juga tinggi, sedangkan lada putih yang memiliki kadar air rendah memiki AKK yang  rendah.Kata Kunci: Lada putih, Angka kapang khamir, Kadar Air

Experimental Study on the Improvement of High Water Content Dredged Material by Cement and by Quicklime

2014 ◽  
Vol 878 ◽  
pp. 714-719 ◽  
Author(s):  
Ying Hao Huang ◽  
Chan Dong ◽  
Xiao Lei Zhan ◽  
Yun Fei Guan
Keyword(s):  
Water Content ◽  
High Water ◽  
High Water Content ◽  
Dry Density ◽  
Dredged Material ◽  
Test Results ◽  
Environmental Friendly ◽  
Dredged Materials ◽  
Beneficial Uses ◽  
Modified Soil

Dredging is necessary to keep rivers, harbors and lakes function normally. These dredged materials (DM) have poor geotechnical properties and are normally treated as wastes. Thus, utilization of DM for beneficial uses such as fill is being considered as an environmental-friendly and economical option. In this study a dredged material taken from Tai-hu Lake was modified by adding quicklime and by Portland cement. Water content, dry density, plasticity, and California bearing ratio (CBR) of the two types of modified soil were determined and compared. Test results show that both quicklime and cement can evidently decrease the water content and increase dry density, but the former can get better effect relatively. On the other hand, both quicklime and cement can significantly decrease the plasticity characteristics, and change the raw DM classified as CH to MH after modified, moreover, the cement has better effect on the improvement of plasticity. For the same additive content and curing days, the cement modified soil has larger CBR strength than that of the quicklime modified soil. Conclusions of the paper maybe beneficial and useful for the solidification material choose, and for practical dredged material solidification projects.

Selection of Groundwater Control Scheme for Deep Excavation in Alluvial Soil along the Yellow River

2012 ◽  
Vol 212-213 ◽  
pp. 323-326 ◽  
Author(s):  
Hua Yuan ◽  
Zhi Liang Zhao ◽  
Yun Hua Li
Keyword(s):  
Yellow River ◽  
Alluvial Soil ◽  
High Water ◽  
High Water Content ◽  
The Yellow River ◽  
Deep Excavation ◽  
Foundation Pit ◽  
Water Head ◽  
Control Scheme ◽  
Geological Conditions

Kaifeng locates on a flat and open alluvial plain of the middle and lower reaches of the Yellow River. Owing to its complex history and long-term deposition, a silty stratum with multi-miscellaneous fill and alluvial soil interphase is gradually formed. Combing with the soil actual characteristics of Kaifeng area, which is mainly composed of “high water content”, “high water head”, “strong permeability”, “low strength”, “adequate water supply”, a optimal groundwater control scheme for deep excavation under above complicated geological conditions is proposed. Moreover, the most appropriate waterproof curtain form is recommended for the foundation pit engineering whose excavation depth is less than 10m. The findings of this investigation may offer some suggestions for the choice of groundwater control scheme for construction purpose in similar strata.

Heartwood detection for Scotch pine by fluorescence image analysis

Holzforschung ◽  
2012 ◽  
Vol 66 (7) ◽  
pp. 877-881 ◽  
Author(s):  
Jukka Antikainen ◽  
Tapani Hirvonen ◽  
Jussi Kinnunen ◽  
Markku Hauta-Kasari
Keyword(s):  
Low Cost ◽  
High Water ◽  
Monomethyl Ether ◽  
Measuring System ◽  
High Water Content ◽  
Imaging Method ◽  
Scotch Pine ◽  
X Ray ◽  
On Line ◽  
Infrared Cameras

Abstract Heartwood detection for Scotch pine (Pinus sylvestris) is possible via several different methods, such as X-ray and infrared cameras. X-ray systems are often very expensive and need huge modifications of sawmill equipment for implementation. Infrared cameras are more affordable but can only be applied for fresh samples with high water content. This article describes a novel imaging method for heartwood detection for Scotch pine, which is based on the fluorescence information emitted of pinosylvin type stilbene and its monomethyl ether. Fluorescence imaging is a low-cost method for measuring heartwood content in real time on an industrial line. The method is applicable for fresh and dried samples. This paper will show the results of fluorescence matrices of Scotch pine. Measurements were made with a bispectrometer system to obtain suitable wavelengths for the excitation and detection of fluorescence. A reliable measuring system is described, which is suited for on-line measurements on an industrial line. An algorithm will also be presented, which is useful for quantification of heartwood and sapwood.

Clay Compaction Test for the Core Wall of DJIPLOHO Dam

2013 ◽  
Vol 438-439 ◽  
pp. 1363-1366
Author(s):  
Jun Liu
Keyword(s):  
High Water ◽  
High Water Content ◽  
Hydroelectric Power Station ◽  
Dry Density ◽  
Left Bank ◽  
Hydroelectric Power ◽  
Power Station ◽  
The Earth ◽  
Oceanic Climate ◽  
Clay Core

The earth-rock dam on left bank of the head of DJIPLOHO Hydroelectric Power Station adopts the clay core dam. Due to the tropical oceanic climate which is hot and rainy, the soil of clay core wall has high water content. Through the compaction experiment on site, it chooses suitable dry density, formulates reasonable rolling parameters and finally achieves good construction quality, which ensures the construction progress and meets the requirement of engineering. This accumulates valuable experience for the design and construction of same types engineering.

Low-Yielding Wells Automatic Metering System

2014 ◽  
Vol 953-954 ◽  
pp. 1467-1470
Author(s):  
Guang Fu Li
Keyword(s):  
Production Capacity ◽  
Automatic Measurement ◽  
High Water ◽  
Gas Production ◽  
Oil Wells ◽  
Oil Field ◽  
Measuring System ◽  
High Water Content ◽  
Measuring Device ◽  
Improve Measurement

When oil field entered into the high water content period, liquid production capacity of oil wells had large fluctuation and poor regularity, which leaded to the error of human reading and bottom water density in the measurement process, the difficulty of measuring oil wells is gradually increasing. Therefore, the measurement of low producing well has aroused extensive attention. How to research and establish a suitable measuring device for low producing well, improve measurement accuracy and management level of intermittent oil wells has become a serious problem in oil production. Using automatic oil measuring system can improve the accuracy of measurement, which achieved the automatic measurement for the fluid and gas production and moisture content of oil wells.

scholarly journals Analysis of a method for measuring deposit impedance parameters using charge amplifier and lock-in voltmeter

2021 ◽  
Author(s):  
Dariusz Robert Wiśniewski
Keyword(s):  
Accurate Method ◽  
High Water ◽  
Measuring System ◽  
High Water Content ◽  
Charge Amplifier ◽  
Impedance Characteristics ◽  
Phase Sensitive ◽  
Impedance Parameters ◽  
A Charge ◽  
Lock In

Parameters such as capacitance and conductivity are measured to describe the properties of a medium, including its moisture content. These methods do not deliver highly accurate results in materials that are characterized by low homogeneity, varied porosity, high conductivity and high water content. This study proposes a more accurate method for estimating the parameters of any medium. In the experimental setup, a charge amplifier and a phase-sensitive voltmeter were applied to determine resistance and capacitance parameters of a medium based on the signals received by the measuring system. The proposed method can be applied to non-homogeneous media containing both dielectric and conductive materials. The described measuring system is composed of two flat electrodes whose size can be adapted to the dimensions of the analyzed medium. A method for processing the sensing signal to determine the impedance characteristics of a medium with the use of a phase-sensitive voltmeter was described. The measuring system was modeled in Matlab/Simulink, and the results were discussed.   

scholarly journals Influence of Curing Stress on One-Dimensional Yielding of Cement-Admixed Bangkok Clay at High Water Content

2011 ◽  
Vol 51 (2) ◽  
pp. 351-357 ◽  
Author(s):  
Pornkasem Jongpradist ◽  
Sompote Youwai ◽  
Pichet Manorat ◽  
Warat Kongkitkul ◽  
Somchai Chucheepsakul
Keyword(s):  
Water Content ◽  
High Water ◽  
High Water Content ◽  
One Dimensional ◽  
Curing Stress

Features of spring feeding of sterlet of the middle course of the Northern Dvina river

2020 ◽  
pp. 8-17
Author(s):  
A. Bykov ◽  
D. Palatov ◽  
I. Studenov ◽  
D. Chupov
Keyword(s):  
Benthic Communities ◽  
High Water ◽  
Food Composition ◽  
Fish Growth ◽  
High Water Content ◽  
Feeding Intensity ◽  
Biting Midges ◽  
Size Groups ◽  
Main Components ◽  
A Minor

The article provides information about the features of spring feeding of sterlet in the spawning grounds of the middle course of the Northern Dvina river in may 2019. The main and secondary groups of forage objects in the diet of this species of sturgeon are characterized. The article considers the variability of the sterlet food composition with an increase in the size of fish from 30 to 60 cm. In the process of fish growth in the diet of the Severodvinsk sterlet, the main components in terms of occurrence and mass in all size groups are the larvae of Brooks and chironomids. A minor occurrence was the larvae of midges, biting midges, stoneflies, mayflies and small clams. To random and seasonal food are the larvae of water bugs, butterflies, flies, beetles and eggs of other fish. The feeding intensity of the smaller sterlet (30–40 cm) was significantly higher than that of the fish in the size groups 40–50 and 50–60 cm. Fundamental changes in the diet of the Severodvinsk sterlet for the main food objects for more than sixty years of observations have not been established. During periods of high water content of the Northern Dvina due to seasonal changes in the structure of benthic communities, the value of Brooks in the diet of sterlet increases and the proportion of chironomids decreases.

Hydrogels as Antibacterial Biomaterials

2018 ◽  
Vol 24 (8) ◽  
pp. 843-854 ◽  
Author(s):  
Weiguo Xu ◽  
Shujun Dong ◽  
Yuping Han ◽  
Shuqiang Li ◽  
Yang Liu
Keyword(s):  
Mechanical Properties ◽  
Drug Delivery ◽  
Tissue Engineering ◽  
Water Content ◽  
Oxygen Permeability ◽  
Structural Diversity ◽  
High Water ◽  
Clinical Applications ◽  
High Water Content ◽  
Biomedical Field

Hydrogels, as a class of materials for tissue engineering and drug delivery, have high water content and solid-like mechanical properties. Currently, hydrogels with an antibacterial function are a research hotspot in biomedical field. Many advanced antibacterial hydrogels have been developed, each possessing unique qualities, namely high water swellability, high oxygen permeability, improved biocompatibility, ease of loading and releasing drugs and structural diversity. In this article, an overview is provided on the preparation and applications of various antibacterial hydrogels. Furthermore, the prospects in biomedical researches and clinical applications are predicted.

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