Log in

Relevant bibliographies by topics / Soil volumetric water concentration / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Soil volumetric water concentration.

Dissertations / Theses on the topic 'Soil volumetric water concentration'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 42 dissertations / theses for your research on the topic 'Soil volumetric water concentration.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Bagour, Mohammed H., and Donald F. Post. "Predicting the Volumetric Water Content of Irrigated Arizona Soils at Different Soil Water Potentials." Arizona-Nevada Academy of Science, 2001. http://hdl.handle.net/10150/296584.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Preko, Kwasi. "Determination of Volumetric Soil Water Content Using Ground Penetrating Radar Bestimmung des volumetrischen Bodenwassergehaltes mit dem Bodenradar /." [S.l. : s.n.], 2007. http://digbib.ubka.uni-karlsruhe.de/volltexte/1000007396.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Khalil, Aveen. "Assessing the responses of wheat roots and shoots to variations in soil water, temperature and CO2 concentration." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/41101/.

Full text

Abstract:

Wheat (Triticum aestivum L.) is one of the most important cereal crops in the world. In order to meet the food requirements of the current trend in population growth, enhancement in wheat production and yield are urgently needed. Water and temperature stress are major constraints to wheat production and subsequently food security in the context of climate change. Plant growth is affected by both above- and belowground environmental conditions and increasing atmospheric CO2 concentrations have been reported to enhance growth and yield of most agricultural crops. The responses of wheat roots and

APA, Harvard, Vancouver, ISO, and other styles

4

Sarker, Shishir Kumar. "Spatial and Temporal Distribution of Total Phosphorus Concentration in Soil and Surface Water in the Everglades Protection Area." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3742.

Full text

Abstract:

Draining of the Everglades allowed for the expansion of urban and agricultural development, reducing half of the size of the historic Everglades. The detrimental cascading effect on the Everglades ecosystem function is related to the total phosphorus (TP) concentrations of water inflow, the inflow rate and the distance from the discharge point. As Everglades restoration has approached 15 years since the inception of the Comprehensive Everglades Restoration Plan (CERP), there is a need to assess its progress across the ecosystem. Available data from 2004 to 2014 were collected for soils and fro

APA, Harvard, Vancouver, ISO, and other styles

5

Roberson, Travis Leon. "Improving Soil Moisture Assessment of Turfgrass Systems Utilizing Field Radiometry." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/87391.

Full text

Abstract:

The need for water conservation continues to increase as global freshwater resources dwindle. In response, many golf course superintendents are implementing new methods and tools to become more frugal with their water applications. For example, scheduling irrigation using time-domain reflectometer (TDR) soil moisture sensors can decrease water usage. Still, TDR measurements are time-consuming and only cover small scales, leading to many locations being unsampled. Remotely sensed data such as the normalized difference vegetation index (NDVI) offer the potential of estimating moisture stress acr

APA, Harvard, Vancouver, ISO, and other styles

6

Soto, Beltran Johana Marcela. "Assessing Efficacy of NanoCeram Filters For Virus Concentration From Water: Risk Assessment for Listeria and Salmonella in Food." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/202530.

Full text

Abstract:

Water quality, and therefore human health, may be significantly affected by the presence of pathogenic enteric microorganisms derived for improper disposal of wastewater to aquatic environments. Detection of waterborne viruses is complex due to the difficulties in concentrating the sample and then in detecting the virus by cell culture or molecular techniques. Methods used to concentrate enteric viruses from water have remained largely unchanged for nearly 30 years. The U.S. Environmental Protection Agency requires the use of 1MDS electropositive filters for concentrating enteric viruses from

APA, Harvard, Vancouver, ISO, and other styles

7

Radolinski, Jesse Benjamin. "Illuminating controls on solute and water transport in the critical zone." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/95235.

Full text

Abstract:

Earth's near-surface environment sustains nearly all terrestrial life, yet this critical zone is threatened by the environmental migration of new and potentially harmful compounds produced to support a growing human population. Traditional transport equations often fail to capture the environmental behavior of these emerging contaminants due to issues such as flow heterogeneity. Thus, there is a need to better evaluate controls on pollutant partitioning in Earth's critical zone. Our first study investigated the transport and distribution of the neonicotinoid insecticide thiamethoxam (TMX) by g

APA, Harvard, Vancouver, ISO, and other styles

8

Al-Hazzouri, Abbas. "Effect of sodium catchments on soluble soil salts, leaf ion concentration, and the yield of fruit in a water harvesting system." Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/184973.

Full text

Abstract:

This study consisted of field experiments to determine the effect of sodium catchment on the distribution of soluble salts and exchangeable ions in soil, leaf ion concentration, and yield of peaches. The experiments were conducted at the Oracle Agricultural Center, formerly known as Page Ranch, University of Arizona, for a period of two years. The soil in this area is White House sandy clay loam. Sodium chloride salt was applied at a rate of 11.2 ton/ha to the Sodium Treated Catchment Area (STCA). Also, sulfur was applied at a rate of.5 kg m⁻² to Cropped Water Ways (CWW). Four peach cultivars

APA, Harvard, Vancouver, ISO, and other styles

9

Jeyisanker, Kalyani. "Analysis of Water Seepage Through Earthen Structures Using the Particulate Approach." [Tampa, Fla] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002783.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Hunsaker, Heather Mae. "Predicting Maize Yield, Nutrient Concentration and Uptake in P and K Fertilized Soils: Pressurized Hot Water and Other Alternatives to Mehlich I Extraction in Guatemala Soils." BYU ScholarsArchive, 2006. https://scholarsarchive.byu.edu/etd/941.

Full text

Abstract:

The inaccessibility and cost of soil testing reduce effectiveness of fertilizer use on small-scale subsistence farms, and inadequate funding promotes adoption of soil tests in developing countries with minimal validation. For example, Mehlich-I extraction of phosphorus (P) currently used extensively in Guatemala may not be suitable for its broad range of soils. At least four alternatives are available but are relatively untested [Bray 1, Mehlich III, Olsen and pressurized hot water (PHW)]. Pressurized hot water is relatively simple and inexpensive, but is not yet tested against other extractio

APA, Harvard, Vancouver, ISO, and other styles

11

Jiang, Shuang. "Bacterial leaching from dairy shed effluent applied to a fine sandy loam under flood and spray irrigations." Lincoln University, 2008. http://hdl.handle.net/10182/668.

Full text

Abstract:

Land application of wastes has become increasingly popular, to promote nutrient recycling and environmental protection, with soil functioning as a partial barrier between wastes and groundwater. Dairy shed effluent (DSE), may contain a wide variety of pathogenic micro-organisms, including bacteria (e.g. Salmonella paratyphyi, Escherichia coli. and Campylobacter), protozoa and viruses. Groundwater pathogen contamination resulting from land-applied DSE is drawing more attention with the intensified development of the dairy farm industry in New Zealand. The purpose of this research was to investi

APA, Harvard, Vancouver, ISO, and other styles

12

Soncela, Rosimaldo. "Técnica da TDR na estimativa da umidade e condutividade elétrica de solo irrigado com água residuária da suinocultura." Universidade Estadual do Oeste do Parana, 2010. http://tede.unioeste.br:8080/tede/handle/tede/311.

Full text

Abstract:

Made available in DSpace on 2017-05-12T14:47:58Z (GMT). No. of bitstreams: 1 Rosimaldo Soncela.pdf: 1165359 bytes, checksum: 65125007d81deb1038c3d55926b33252 (MD5) Previous issue date: 2010-06-30<br>The swine waste water (SWW) application in soil has become an alternative fertilizer for soil and used as a water reuse. However, special attention must be given to the amount of salt content in such water since succeeding applications can stimulate the saltishness process on soil, which can ask for an indispensable monitoring of salt content in soil. The time-domain reflectometry (TDR) allows fo

APA, Harvard, Vancouver, ISO, and other styles

13

Gogo-Abite, Ikiensinma. "Effluent Water Quality Improvement Using Silt Fences and Stormwater Harvesting." Doctoral diss., University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5226.

Full text

Abstract:

Construction sites are among the most common areas to experience soil erosion and sediment transport due to the mandatory foundation tasks such as excavation and land grubbing. Thus, temporary sediment barriers are installed along the perimeter to prevent sediment transport from the site. Erosion and sediment transport control measures may include, but not limited to, physical and chemical processes such as the use of a silt fence and polyacrylamide product. Runoff from construction sites and other impervious surfaces are routinely discharged into ponds for treatment before being released into

APA, Harvard, Vancouver, ISO, and other styles

14

Gherardi, Mark James. "Availability and management of manganese and water in bauxite residue revegetation." University of Western Australia. Soil Science and Plant Nutrition Discipline Group, 2004. http://theses.library.uwa.edu.au/adt-WU2005.0038.

Full text

Abstract:

[Truncated abstract] Industrial processing to refine alumina from bauxite ore produces millions of tonnes of refining residue each year in Australia. Revegetation of bauxite residue sand (BRS) is problematic for a number of reasons. Harsh chemical conditions caused by residual NaOH from ore digestion mean plants must overcome extremely high pH (initially >12), saline and sodic conditions. At such high pH, manganese (Mn) is rapidly oxidised from Mn2+ to Mn4+. Plants can take up only Mn2+. Thus, Mn deficiency is common in plants used for direct BRS revegetation, and broadcast Mn fertilisers ha

APA, Harvard, Vancouver, ISO, and other styles

15

Uhrová, Jana. "Vliv změn krajiny na erozní a odtokové poměry." Doctoral thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-234561.

Full text

Abstract:

The aim of this thesis is to evaluate the influence of land use changes on erosion and runoff conditions. For the purpose of the evaluation, two catchments with different areas and pedological characteristics were selected (the catchment of the river Luha and the catchment of the Hubenov reservoir). In these catchments, a comparison of 26 selected land covers was conducted. The individual land covers were evaluated first in four seasons of the 1950s and 1990s, second according to the today's status of landscape by means of a detailed yearly evaluation conducted between 2002 and 2013, and third

APA, Harvard, Vancouver, ISO, and other styles

16

竹井, 理絵, Rie TAKEI, 真貴辻村, Maki TSUJIMURA, 丈子高木 та Takeko TAKAGI. "異なる採取法による土壌水中の溶存無機イオン濃度の違い". 名古屋大学農学部付属演習林, 1998. http://hdl.handle.net/2237/8492.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Suchá, Kateřina. "Hodnocení kvality/zdraví půdy v blízkosti obce Bohaté Málkovice." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392022.

Full text

Abstract:

Diploma thesis evaluates quality and healthiness of the soil health located close to Bohate Malkovice focusing on changes in both physical and chemical characteristics of the soil in time. The theoretical part describes physical, chemical, and biological parameters of the soil. Selected physical parameters are structure, texture, determination of measured weight, bulk density of the soil, porosity, actual volumetric water content of the soil, aeration, saturated and unsaturated hydraulic conductivity, infiltration, and colour. Chosen chemical parameters are pH, carbonates, soil electrical cond

APA, Harvard, Vancouver, ISO, and other styles

18

Lawrence, Cameron Eoin. "Measurement of 222Rn Exhalation Rates and 210Pb Deposition Rates in a Tropical Environment." Thesis, Queensland University of Technology, 2006. https://eprints.qut.edu.au/16291/1/Cameron_Lawrence_Thesis.pdf.

Full text

Abstract:

This thesis provides the measurements of 222Rn exhalation rates, 210Pb deposition rates and excess 210Pb inventories for locations in and around Ranger Uranium Mine and Jabiru located within Kakadu National Park, Australia. Radon-222 is part of the natural 238U series decay chain and the only gas to be found in the series under normal conditions. Part of the natural redistribution of 222Rn in the environment is a portion exhales from the ground and disperses into the atmosphere. Here it decays via a series of short-lived progeny, that attach themselves to aerosol particles, to the long lived i

APA, Harvard, Vancouver, ISO, and other styles

19

Lawrence, Cameron Eoin. "Measurement of 222Rn Exhalation Rates and 210Pb Deposition Rates in a Tropical Environment." Queensland University of Technology, 2006. http://eprints.qut.edu.au/16291/.

Full text

Abstract:

This thesis provides the measurements of 222Rn exhalation rates, 210Pb deposition rates and excess 210Pb inventories for locations in and around Ranger Uranium Mine and Jabiru located within Kakadu National Park, Australia. Radon-222 is part of the natural 238U series decay chain and the only gas to be found in the series under normal conditions. Part of the natural redistribution of 222Rn in the environment is a portion exhales from the ground and disperses into the atmosphere. Here it decays via a series of short-lived progeny, that attach themselves to aerosol particles, to the long lived i

APA, Harvard, Vancouver, ISO, and other styles

20

Parrish, Douglas K. "Application of solid phase microextraction with gas chromatography-mass spectrometry as a rapid, reliable, and safe method for field sampling and analysis of chemical warfare agent precursors /." Download the dissertation in PDF, 2005. http://www.lrc.usuhs.mil/dissertations/pdf/Parrish2005.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Fouché, Julien. "Effet du réchauffement climatique sur le fonctionnement biogéochimique de deux cryosols arctiques dans la région de Salluit, Nunavik, Canada." Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4306.

Full text

Abstract:

L'augmentation de la décomposition de la matière organique des cryosols arctiques sous l'effet du réchauffement et de la dégradation du pergélisol contribuerait à une rétroaction positive sur les changements climatiques. Nous étudions le fonctionnement biogéochimique de deux Cryosols: un cryosol histique (H) et un cryosol turbique (T), en conditions naturelles et réchauffés. Les profils ont été instrumentés à Salluit (Nunavik, Canada) et les mesures ont été faites pendant les étés 2010 et 2011. Le réchauffement augmente la respiration de l'écosystème (ER) de manière plus intense pour H que pou

APA, Harvard, Vancouver, ISO, and other styles

22

Mazot, Agnès. "Activité hydrothermale des volcans Kelud et Papandayan (Indonésie) et évaluation des flux de gaz carbonique." Doctoral thesis, Universite Libre de Bruxelles, 2005. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210971.

Full text

Abstract:

Surface manifestations of hydrothermal fluids such as fumaroles and hot springs provide valuable information about the level of activity of a volcano during quiescent period. Geochemical study of gas and spring waters is useful to elaborate geochemical model for magmatic-hydrothermal system. Furthermore, temporal geochemical monitoring of these fluids with time provides a better understanding in processes occurring inside the volcano and can be useful to detect any changes in the activity of the magmatic-hydrothermal system. This thesis investigates two hydrothermal systems at Kelud and Papand

APA, Harvard, Vancouver, ISO, and other styles

23

Chiang, Chia-Chen, and 蔣佳真. "Optimal Layout for Volumetric Water Content Measurements of Unsaturated Soil Slope." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/14801496342724855100.

Full text

Abstract:

碩士<br>國立雲林科技大學<br>營建工程系<br>104<br>Recently, climate change in Taiwan has caused extreme weather conditions and resulted in many rainfall-induced slope failures. To predict the transient volumetric water content (VWC) in an unsaturated slope during rainfall, an optimization analysis method based on two dimensional finite element method and Levenberg-Marquart method was proposed. The proposed methodology was verified and proven to be applicable to simulate the transient VWC distributions. A series of inverse analyses on the measured transient volumetric water content of model slopes was performe

APA, Harvard, Vancouver, ISO, and other styles

24

Chen, Chia-Yang, and 陳佳暘. "The Back Analysis on the Volumetric Water Content of Unsaturated Soil Model Slopes." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/16853531751160211743.

Full text

Abstract:

碩士<br>國立雲林科技大學<br>營建工程系碩士班<br>99<br>Recently, climate change in Taiwan has caused more extreme weather conditions and resulted in many rainfall-induced slope failures. To predict the transient volumetric water content (VWC) in an unsaturated slope during rainfall, an optimization analysis method based on two dimensional finite element method and Levenberg-Marquart method was proposed. The proposed methodology was verified and proven to be applicable to simulate the transient VWC distributions. A series of inverse analyses on the measured transient volumetric water content of two model slopes w

APA, Harvard, Vancouver, ISO, and other styles

25

Jang, Hui-Ming, and 張慧萌. "Effect of Nitrogen Concentration in Swine Waste Water on Water- Soil-Crop Relationship." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/83899754108644675447.

Full text

Abstract:

碩士<br>國立臺灣大學<br>農業工程學系<br>82<br>In Taiwan, irrigation water was contaminated by the large amount of swine wastewater.Therefore, excess nitrogen from swine waste water not only degenerated irrigation water and soil properties but also reduced rice growth and yield. This study used the farm field of Wan-Dan that was irrigated by Tai-Tao and Yung-An channel in Ping-Ton as an experimental area. We analyzed the variability of nitrogen from soil samples with the different depth

APA, Harvard, Vancouver, ISO, and other styles

26

YANG, SHIH-TING, and 楊士霆. "Stability Analysis of Rainfall Infiltrated Unsaturated Soil Slope and its Critical Volumetric Water Content." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/4cm5cr.

Full text

Abstract:

碩士<br>國立臺北科技大學<br>土木工程系土木與防災碩士班<br>107<br>Taiwan has many hillsides and many slopes with steep slopes. When these unsaturated slopes are affected by rainfall, the infiltration of water leads to loss of matric suction, which causes the shear strength to decrease and, in turn, leads to the subsequent slope instability. In this study, numerical analysis is used to investigate the infiltration and the instability mechanism of unsaturated slopes affected by rainfall, Through the coupling of solid mechanics equation and the seepage governing equation together with the soil characteristics of the uns

APA, Harvard, Vancouver, ISO, and other styles

27

Tang, Yucao. "Calibration of water content reflectometer in Rocky Mountain arsenal soil." Thesis, 2009. http://hdl.handle.net/2152/ETD-UT-2009-08-311.

Full text

Abstract:

This paper describes how water content reflectometers (WCRs) were analyzed to develop a calibration equation. Time domain reflectometry (TDR) technique is the most prevalent method in in-situ moisture monitoring; and WCR is a type of low frequency TDR sensors, which is sensitive to soil type. Developing soil-specific calibration and investigating different environmental effects on WCR calibration is important. This study focused on investigation of the soil dry density and temperature effects on WCR calibration in RMA soil. Two series of tests to develop soil-specific calibration with dry dens

APA, Harvard, Vancouver, ISO, and other styles

28

Chen, Jung-Hua, and 陳容花. "Influence of Rainfall Infiltration on Unsaturated Soil Slope and Critical Volumetric Water Content under Different Rainfall Scenarios." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/38957571487701006706.

Full text

Abstract:

碩士<br>國立臺灣科技大學<br>營建工程系<br>103<br>ABSTRACT The majority of Taiwan’s hillsides belong to unsaturated soil slope. Seepage in these unsaturated slopes situated above groundwater level would easily lead to changes of hydrological characteristics (such as matric suction, etc.) when encountered rainfall, and then trigger subsequent slope stability problems. This study adopted a field case and used numerical analysis program SEEP/W and SLOPE/W module to conduct seepage simulation and stability analysis on unsaturated soil slopes under different rainfall scenarios. In addition to simulation and explor

APA, Harvard, Vancouver, ISO, and other styles

29

Wu, Yi-Da, and 吳一大. "Study for Salt Concentration of Irrigation Water Effects on Soil Salinity and Rice Groth." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/64249182397946481008.

Full text

Abstract:

碩士<br>國立臺灣大學<br>農業工程學系<br>81<br>Experiments using irrigation water with different levels of induced salinity and sodium adsorption ratio (SAR) to irrigate potted rice at room temperature, were carried out. We attempted to provide the effect salinity on soil sand rice. For sandy loam, in drainage and non-drainage, five levels of electrical conductivities (EC) of irrigation water,namely, 250, 750, 1500, 2250, and 3000micromhos/cm with combination of four levels of sodium adsorp

APA, Harvard, Vancouver, ISO, and other styles

30

Hsu, Kan-Sheng, and 許堪昇. "Soil Temperature and Volumetric Water Content Prediction in Greenhouse by Using Hydrus-1D, ICON and Random Forest Method." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/p6tjuv.

Full text

Abstract:

碩士<br>國立臺灣大學<br>生物環境系統工程學研究所<br>107<br>Due to the impact of climate change and the rising frequency of extreme weather have caused the problem of food security and water resources. Precision agriculture in greenhouses is gradually becoming a trend because it is less affected by external environmental factors and easier to manage. In order to effectively improve the utilization of water resources and reduce wasting water, this study planted cherry tomatoes in the greenhouse and installed monitoring instruments to collect data. The soil temperature and volumetric water content during tomato grow

APA, Harvard, Vancouver, ISO, and other styles

31

Adhikari, Bishwodeep. "The Contributions of Soil Moisture and Groundwater to Non-Rainfall Water Formation in the Namib Desert." Thesis, 2019. http://hdl.handle.net/1805/20533.

Full text

Abstract:

Indiana University-Purdue University Indianapolis (IUPUI)<br>Non-rainfall waters such as fog and dew are considered as important source of water in drylands, and the knowledge of possible sources of its formation is very important to make future predictions. Prior studies have suggested the presence of radiation fog in drylands; however, its formation mechanism still remains unclear. There have been earlier studies on the effects of fog on soil moisture dynamics and groundwater recharge. On the contrary, no research has yet been conducted to understand the contribution of soil moisture and gro

APA, Harvard, Vancouver, ISO, and other styles

32

Hsu, Shu-Chi, and 許書齊. "Laboratory and Field Measurements of Soil Water content and Contaminant Concentration Using Time Domain Reflectometry." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/57781012859979005763.

Full text

Abstract:

碩士<br>國立臺灣海洋大學<br>應用地球科學研究所<br>102<br>As industry develop rapidly, the issues of environmental pollution increase drastically as well. When contaminants infiltrate into soil and groundwater, the distributions of contaminant are affected by geometries of the soil, aquifer properties, mechanisms of solute transport, and boundary conditions. However, these factors include many uncertainties and result in the challenges during the contaminant remediation. In order to enhance the ability for contaminated site remediation, acquiring accurate understandings of the unsaturated zone of a groundwater fl

APA, Harvard, Vancouver, ISO, and other styles

33

Jalayer, Alireza. "Oxygen mass transfer in solid-laden liquids." Thesis, 2015. http://hdl.handle.net/1959.13/1310002.

Full text

Abstract:

Masters Research - Master of Philosophy (MPhil)<br>In this study a falling film apparatus was used to aerate a continuous water stream containing solids. Specifically, the aim of the research was to investigate the performance of the apparatus, in terms of the oxygen mass transfer rate, overall volumetric mass transfer coefficient, interfacial area and alpha factor, as a function of water volumetric flow rate, initial dissolved oxygen concentration, solids concentration, and apparatus geometry. The falling film apparatus was comprised of a vertical array of horizontal wooden cylinders (0.035 m

APA, Harvard, Vancouver, ISO, and other styles

34

Preko, Kwasi [Verfasser]. "Determination of volumetric soil water content using ground penetrating radar = Bestimmung des volumetrischen Bodenwassergehaltes mit dem Bodenradar / vorgelegt von Kwasi Preko." 2008. http://d-nb.info/987794604/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Sun, Wei-Teng, and 孫偉騰. "A Study on the Relationships among Ion Concentration、Electrical Conductivity of Seepage Water and Soil Mass Movement Occurrence." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/77902817200704779556.

Full text

Abstract:

碩士<br>國立臺灣大學<br>生物環境系統工程學研究所<br>93<br>Abstract The main purpose of this study is to investigate the relationships among ion concentration、electrical conductivity (EC) of seepage water and soil mass movement occurrence. The sites of this study were selected at Feng-Chiu and Shen-Mu in Nantou and Sindian in Taipei. Soil samples for the tests were collected from the watersheds of the debris flow potential streams of the sites. After the soil samples were sieved and prepared in the flumes in a manner of simulating the soil physical conditions in the field and Equal-Weight Replacement Method, the

APA, Harvard, Vancouver, ISO, and other styles

36

Kader, Mohammed Abdul. "Predicting phytotoxicity of metal(loid)s and their mixtures in soil using pore-water based transfer functions." Thesis, 2017. http://hdl.handle.net/1959.13/1342491.

Full text

Abstract:

Research Doctorate - Doctor of Philosophy (PhD)<br>The terrestrial environment is exposed to mixtures of contaminants simultaneously through various sources and exposure routes. Soil contamination by a single xenobiotic is an exception rather than the rule. However, environmental toxicity studies and environmental regulations primarily deal with individual toxicants without an informed method for dealing with multiple toxicants. Scientifically, the importance of contaminant mixtures in environmental media is recognised, but to date the field of environmental chemistry and toxicology has been u

APA, Harvard, Vancouver, ISO, and other styles

37

Abdelkhalik, Abdelsattar Gamal Abdelsattar. "Effect of continued and regulated deficit irrigation on the productivity of four vegetable crops in open-field conditions in the Mediterranean area." Doctoral thesis, 2020. http://hdl.handle.net/10251/129868.

Full text

Abstract:

[ES] La escasez de agua se está convirtiendo en un problema en zonas áridas y semiáridas del mundo, donde se localiza parte de la producción de los principales cultivos hortícolas, como en el área mediterránea. La sequía es uno de los principales factores limitantes en la agricultura y está afectando gravemente a la producción de cultivos hortícolas. La mejora de la productividad del agua en la agricultura puede lograrse mediante la utilización de determinadas estrategias. El riego deficitario consiste en el aporte de agua por debajo de las necesidades de riego (NR) de los cultivos, de manera

APA, Harvard, Vancouver, ISO, and other styles

38

SIAO, KUN-JHANG, and 蕭昆璋. "Study on the Influence of Water and Fertilizer Concentration on the Production Capacity of Fruit Courgette in Soil-free Cultivation in Production Facilities." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/pzkj85.

Full text

Abstract:

碩士<br>中州科技大學<br>機械與自動化工程系<br>107<br>Soilless cultivation has become a global trend for cultivation. In addition to ensuring that crop productions are not affected by climatic interferences, soilless cultivation can also improve yield. In this study, groundwater irrigation was used as the control group and compound fertilizers of 15:10:15:2 (N: P: K: Mg) were diluted by 4000 times (treat 1), 2000 times (treat 2), 1000 times (treat 3), and 500 times (treat 4). The experiment results showed that treat 3 resulted in more stable growth and relatively higher yield. Therefore, fertilizer that was dil

APA, Harvard, Vancouver, ISO, and other styles

39

Kurniawan, Syahrul. "Conversion of lowland forests to rubber and oil palm plantations changes nutrient leaching and nutrient retention efficiency in highly weathered soils of Sumatra, Indonesia." Doctoral thesis, 2016. http://hdl.handle.net/11858/00-1735-0000-0028-8706-8.

Full text

Abstract:

In den letzten zwei Jahrzehnten wurden in Sumatra (Indonesien) große Regenwaldflächen für den Anbau von Kautschuk- und Palmölplantagen zerstört. Dies zeigt sich in der Abnahme Waldfläche in dieser Region um 36% zwischen 1990-2010. Eine solch schnelle Landnutzungsänderung hat Auswirkungen auf die Umwelt: Es ist davon auszugehen, dass die Zerstörung von Regenwald und die Etablierung von Kautschuk- und Palmölplantagen aufgrund von Einflüssen auf die Bodenoberfläche, Veränderungen von Streufall, Nährstoffverfügbarkeit und Management in den Plantagen zu erhöhter Nährstoffauswaschung und einer vermi

APA, Harvard, Vancouver, ISO, and other styles

40

Chin, Pei-Ling, and 金蓓伶. "The effects of phosphorous application and soil water management on total arsenic concentration and arsenic species distribution in brown rice grown in two arsenic-contaminated soils." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/41305880413602696684.

Full text

Abstract:

碩士<br>國立臺灣大學<br>農業化學研究所<br>103<br>Previous studies have reported that human beings would expose to arsenic (As) by consumption of rice (Oryza sativa L.). Rice roots absorb phosphate and arsenate (As(V)) through the same transport pathway. Therefore, P application is assumed to decrease As concentration of rice via competitive absorption by rice roots. However, paddy rice is grown under the reducing condition which As(V) is not the predominant As species. To create more aerobic condition during the rice growing period, we involved a water management which keeps soil saturated in comparison with

APA, Harvard, Vancouver, ISO, and other styles

41

HUMPÁL, David. "Vliv opatření GAEC II na snížení odnosu sedimentů ve zvolených povodích." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-154375.

Full text

Abstract:

This diploma thesis deals with the issue of sediments (undissolved substances) and with the possibilities of reducing sediment denudation in an agricultural landscape, especially my means of GAEC 2. The principal object of the thesis is to assess the effect of GAEC 2 on sediment denudation and to propose complementary erosion control measures in a landscape of interest. The research basin of the Jenínský Brook with permanent graminaceous vegetation on its soil blocks (without GAEC 2 application) and the basin of the Budský Brook in the soil blocks of which the GEAC 2 standard is applied were c

APA, Harvard, Vancouver, ISO, and other styles

42

Скоробагатько, Богдана Сергіївна, та Bohdana Serhiivna Skorobahatko. "Сучасний стан ґрунтів природного заповідника «Михайлівська цілина»". Master's thesis, 2021. http://repository.sspu.edu.ua/handle/123456789/11833.

Full text

Abstract:

Для дослідження сучасного стану ґрунтів природного заповідника «Михайлівська цілина» було вибрано 12 точок відбору зразків. Виявлено, що найкращі фізико-хімічні властивості (структура, водостійкість ґрунтових агрегатів, питома та об’ємна вага, вміст гумусу) мають ґрунти, зразки яких були відібрані з точок, які розміщуються на території, що входили до складу заповідника до 2009 року.<br>12 sampling points were selected to study the current state of soils of the «Mykhailivska Tsilyna» Nature Reserve. It was found that the best physical and chemical properties (structure, water resistance of so

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!