Methods for determination of the coefficient of consolidation and field observations of time rate of settlement — an overview

2009 ◽  
Vol 3 (1) ◽  
pp. 89-108 ◽  
Author(s):  
S. Shukla ◽  
N. Sivakugan ◽  
B. Das
Keyword(s):  
Field Observations ◽  
Time Rate ◽  
Coefficient Of Consolidation

Application of dn/dc Data for Determination of Partial Specific Volumes of Dissolved Macromolecules

1967 ◽  
Vol 40 (4) ◽  
pp. 1281-1295
Author(s):  
Wilfried Heller
Keyword(s):  
Specific Volume ◽  
Solution Process ◽  
Time Rate ◽  
Interpolation Procedure ◽  
Specific Volumes

Abstract The principles of a method are outlined whereby one can determine the partia specific volume of a solute, V, by means of measurements of dn/dc using a suitable pair of equations and a simple graphical interpolation procedure. The method yields V data which compare well with densitometrically obtained V data if the polarizability of both solvent and solute molecules is unaffected by the solution process. It is tested successfully on solutions of polystyrene in various solvents. The method appears to be particularly attractive for measurements of the change of V with temperature and also for conveniently following the time rate of changes in V such as during the coil → helix transition.

A New Method for the Determination of Coefficient of Consolidation

1992 ◽  
Vol 15 (1) ◽  
pp. 74 ◽  
Author(s):  
PC Knodel ◽  
NS Pandian ◽  
A Sridharan ◽  
KS Kumar
Keyword(s):  
New Method ◽  
Coefficient Of Consolidation

Improved Velocity Method for the Determination of Coefficient of Consolidation

1994 ◽  
Vol 17 (1) ◽  
pp. 113 ◽  
Author(s):  
HJ Pincus ◽  
NS Pandian ◽  
A Sridharan ◽  
KS Kumar
Keyword(s):  
Coefficient Of Consolidation

scholarly journals CELL POPULATION CHANGES IN THE INTESTINAL MUCOSA OF PROTEIN-DEPLETED OR STARVED RATS

1972 ◽  
Vol 53 (1) ◽  
pp. 225-230 ◽  
Author(s):  
A. F. Hopper ◽  
P. M. Rose ◽  
R. W. Wannemacher
Keyword(s):  
Population Changes ◽  
Time Rate ◽  
Maturation Period ◽  
Cell Cycle Time ◽  
Rat Ileum ◽  
Experimental Animals ◽  
Time Required ◽  
Protein Free Diet ◽  
Migration Of Cells

The effect of protein-free and starvation diets on the migration of cells from the crypts onto and up the villi of the rat ileum was studied. Rats starved for 3, 7, or 10 days or fed a protein-free diet (PFD) for 3, 7, or 11 wk were injected with thymidine-3H and sacrificed at timed intervals. The time required for the labeled cells to first appear on the villi of experimental animals was longer than in the controls. This was the result of an elongated cycle in the protein-depleted animals and a lengthening of the maturation period in both the starved and protein-depleted animals. Determination of the distance which labeled cells had migrated up the villi in control and experimental animals, after thymidine-3H injection, indicated that cells in animals starved for 7 days migrated more rapidly than those in the fed controls, while those of 10-day starved animals moved more slowly. The cells of animals fed PFD for 3 wk migrated up the villi more rapidly, those of animals depleted for 7 wk migrated at the same time rate, and those of 11-wk PFD animals migrated more slowly than the fed controls. There is apparently no correlation between the cell cycle time in the crypt cells and the rate of migration of cells up the villus.

scholarly journals DETERMINATION OF THE WAVE ATTACK ANTICIPATED UPON A STRUCTURE FROM LABORATORY AND FIELD OBSERVATIONS

2011 ◽  
Vol 1 (7) ◽  
pp. 37
Author(s):  
W.A. Venis
Keyword(s):  
Comparative Study ◽  
Model Tests ◽  
Water Levels ◽  
Field Observations ◽  
Wave Impact ◽  
Spring System ◽  
Mass Spring ◽  
The Comparative Study ◽  
The Impact

Model tests have been carried out to obtain an insight into the magnitude of the wave-pressures in various situations. These tests showed, that sharp high pressure peaks occur in addition to the pressures caused by the reflecting of the waves, which pressures are quasi-static. As the structure can be compared with a multiple mass-spring system these pressure-peaks may cause the whole construction to vibrate. Wave-attack therefore can be expressed in terms of impact. Moreover, calculations revealed that the impact pressures were critical factors in determining the strength of the structure. So many model tests were carried out to determine the design and location of the sluices. These tests involved numerous water-levels discharges and waves. Regarding the pressure-peaks a comparative study was made in the model, which led to the structure being designed in such a way that the occurrence of critical impacts was reduced to an acceptable minimum. As it was impossible to avoid the occurrence of impact pressures entirely it remained necessary to determine a basic load for the structure that takes care of the impact pressures. As it has not yet appeared possible physically to determine a theoretical maximum for the impact pressures, it has to be borne in mind that there is a probability that each pressure measured will be exceeded. So this paper describes, how the cumulative frequency curve of the impacts for the case mentioned in 1.1 sub a, which served as a basis for determining the basic load was arrived at by a certain combination of laboratory and field observations. The data used for this purpose were a. Results of wave-impact measurements on a model of the sluices. This model, built in accordance with the results of the comparative study, was situated in the wind-flume of the "de Voorst" hydraulic laboratory. b. Wave height measurements in the Haringvliet during 1957 and 1958. c. Wind-speed measurements on board the lightship Qoeree, likewise during 1957 and 1958. d. Tidal registrations at Hellevoetsluis from 1920 to 1960. e. Wind-force data from the Hook of Holland, likewise from 1920 to 1960.

scholarly journals Bencana Kekeringan di Wilayah Taman Bumi Nasional Karangsambung-Karangbolong: Pengontrol, Dampak, dan Ketahanan

2021 ◽  
Vol 12 (1) ◽  
pp. 57
Author(s):  
Sugeng Purwo Saputro ◽  
Dwi Ratih Purwaningsih ◽  
Rahmi Mulyasari
Keyword(s):  
Local Governments ◽  
Secondary Data ◽  
Metamorphic Rocks ◽  
Field Observations ◽  
Danger Zone ◽  
Infiltration Rates ◽  
Geological Conditions ◽  
Groundwater Reserves ◽  
Groundwater Reserve

ABSTRAKKaranggayam dan Karangsambung di Kabupaten Kebumen termasuk ke dalam zona bahaya tinggi terdampak bencana kekeringan. Kedua daerah tersebut memiliki variasi batuan yang lengkap mulai dari batuan beku, batuan sedimen, hingga batuan metamorf, dan termasuk ke dalam wilayah Taman Bumi Nasional Karangsambung-Karangbolong. Prediksi dan penentuan area yang masih memiliki cadangan air tanah menjadi hal yang vital untuk segera dilakukan guna mengurangi dampak dari bencana tersebut, ditunjang dengan pengetahuan mengenai pengontrol utama dari parameter penyebab bencana kekeringan di daerah Karanggayam dan Karangsambung. Observasi lapangan dan analisis geospasial dipilih menjadi metode karena dinilai lebih efisien untuk penelitian ini, serta didukung dengan hasil analisis statistik dari data sekunder. Fisiognomi tanah, kondisi geologi, dan angka infiltrasi yang merupakan bagian dari delapan karakteristik geografi dan geomorfologi, dinilai menjadi pengontrol utama dari parameter penyebab bencana kekeringan yang terjadi di Karanggayam dan Karangsambung. Ketiga karakteristik tersebut berperan dalam mempersempit kemungkinan area cadangan air tanah menjadi hanya berada di sekitar lembah antiklin dan lereng sayap antiklin bagian selatan-tenggara (S-SE). Seluruh hasil penelitian ini dapat berfungsi untuk membantu pemerintah daerah dan pengelola taman bumi dalam membuat berbagai macam perencanaan dan kebijakan terkait Taman Bumi Nasional Karangsambung-Karangbolong.Kata kunci: bencana, cadangan air tanah, Kebumen, kekeringan, taman bumiABSTRACTKaranggayam and Karangsambung in Kebumen Regency included in the high danger zone affected by drought. Both areas have complete rock variations ranging from igneous, sedimentary, to metamorphic rocks, and are included in the Karangsambung-Karangbolong National Geopark. Prediction and determination of areas that still have groundwater reserves are vital to be carried out immediately to reduce the disaster’s impact, supported by the knowledge of the main controllers of drought-causing parameters in both areas. Field observations and geospatial analysis were chosen because they were considered more efficient and supported by the results of statistical analysis from secondary data. Soil physiognomy, geological conditions, and infiltration rates are considered the main controllers causing drought disasters in Karanggayam and Karangsambung areas. These three characteristics narrow down the possibility that the groundwater reserve area is only around the anticline valley and the south-southeast (S-SE) side of the anticline wing. All of the results of this study can help local governments and geopark management to make various plans and policies related to the Karangsambung-Karangbolong National Geopark.Keywords: disaster, groundwater reserves, Kebumen, drought, geopark

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