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	Author	Leibundgut, C.; Maloszewski, P.; Külls, C.
	Title	Tracers in Hydrology			Type	Book Whole
	Year	2009	Publication		Abbreviated Journal
	Volume		Issue	1. Ed.	Pages
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher	John Wiley & Sons, Ltd	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @ Leibundgut2009tracers			Serial	37
Permanent link to this record



	Author	Külls, C.
	Title	Groundwater of the North-Western Kalahari, Namibia: estimation of recharge and quantification of the flow system			Type	Book Whole
	Year	2001	Publication	Hydrogeologie und Umwelt	Abbreviated Journal
	Volume		Issue		Pages
	Keywords
	Abstract
	Address
	Corporate Author				Thesis	Doctoral thesis
	Publisher	Hydrogeologie und Umwelt	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @ Kuells2003groundwater			Serial	38
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	Author	Aldawsari, S.; Kampmann, R.; Harnisch, J.; Rohde, C.
	Title	Setting Time, Microstructure, and Durability Properties of Low Calcium Fly Ash/Slag Geopolymer: A Review			Type	Journal Article
	Year	2022	Publication	Materials	Abbreviated Journal
	Volume	15	Issue	3	Pages
	Keywords
	Abstract	Ordinary Portland cement (OPC) is known for its significant contribution to carbon dioxide emissions. Geopolymer has a lower footprint in terms of CO2 emissions and has been considered as an alternative for OPC. A well-developed understanding of the use of fly-ash-based and slag-based geopolymers as separate systems has been reached in the literature, specifically regarding their mechanical properties. However, the microstructural and durability of the combined system after slag addition introduces more interactive gels and complex microstructural formations. The microstructural changes of complex blended systems contribute to significant advances in the durability of fly ash/slag geopolymers. In the present review, the setting time, microstructural properties (gel phase development, permeability properties, shrinkage behavior), and durability (chloride resistance, sulfate attack, and carbonatation), as discussed literature, are studied and summarized to simplify and draw conclusions.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1996-1944	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @ ma15030876			Serial	84
Permanent link to this record



	Author	Eliades, M.; Bruggeman, A.; Djuma, H.; Christofi, C.; Kuells, C.
	Title	Quantifying Evapotranspiration and Drainage Losses in a Semi-Arid Nectarine (Prunus persica var. nucipersica) Field with a Dynamic Crop Coefficient (Kc) Derived from Leaf Area Index Measurements			Type	Journal Article
	Year	2022	Publication	Water	Abbreviated Journal
	Volume	14	Issue	5	Pages
	Keywords
	Abstract	Quantifying evapotranspiration and drainage losses is essential for improving irrigation efficiency. The FAO-56 is the most popular method for computing crop evapotranspiration. There is, however, a need for locally derived crop coefficients (Kc) with a high temporal resolution to reduce errors in the water balance. The aim of this paper is to introduce a dynamic Kc approach, based on Leaf Area Index (LAI) observations, for improving water balance computations. Soil moisture and meteorological data were collected in a terraced nectarine (Prunus persica var. nucipersica) orchard in Cyprus, from 22 March 2019 to 18 November 2021. The Kc was derived as a function of the canopy cover fraction (c), from biweekly in situ LAI measurements. The use of a dynamic Kc resulted in Kc estimates with a bias of 17 mm and a mean absolute error of 0.8 mm. Evapotranspiration (ET) ranged from 41% of the rainfall (P) and irrigation (I) in the wet year (2019) to 57% of P + I in the dry year (2021). Drainage losses from irrigation (DR_I) were 44% of the total irrigation. The irrigation efficiency in the nectarine field could be improved by reducing irrigation amounts and increasing the irrigation frequency. Future studies should focus on improving the dynamic Kc approach by linking LAI field observations with remote sensing observations and by adding ground cover observations.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	2073-4441	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @ Marinos2022			Serial	82
Permanent link to this record



	Author	Eliades, M.; Bruggeman, A.; Djuma, H.; Christofi, C.; Kuells, C.
	Title	Quantifying Evapotranspiration and Drainage Losses in a Semi-Arid Nectarine (Prunus persica var. nucipersica) Field with a Dynamic Crop Coefficient (Kc) Derived from Leaf Area Index Measurements			Type	Journal Article
	Year	2022	Publication	Water	Abbreviated Journal
	Volume	14	Issue	5	Pages
	Keywords
	Abstract	Quantifying evapotranspiration and drainage losses is essential for improving irrigation efficiency. The FAO-56 is the most popular method for computing crop evapotranspiration. There is, however, a need for locally derived crop coefficients (Kc) with a high temporal resolution to reduce errors in the water balance. The aim of this paper is to introduce a dynamic Kc approach, based on Leaf Area Index (LAI) observations, for improving water balance computations. Soil moisture and meteorological data were collected in a terraced nectarine (Prunus persica var. nucipersica) orchard in Cyprus, from 22 March 2019 to 18 November 2021. The Kc was derived as a function of the canopy cover fraction (c), from biweekly in situ LAI measurements. The use of a dynamic Kc resulted in Kc estimates with a bias of 17 mm and a mean absolute error of 0.8 mm. Evapotranspiration (ET) ranged from 41% of the rainfall (P) and irrigation (I) in the wet year (2019) to 57% of P + I in the dry year (2021). Drainage losses from irrigation (DR_I) were 44% of the total irrigation. The irrigation efficiency in the nectarine field could be improved by reducing irrigation amounts and increasing the irrigation frequency. Future studies should focus on improving the dynamic Kc approach by linking LAI field observations with remote sensing observations and by adding ground cover observations.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	2073-4441	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @ w14050734			Serial	81
Permanent link to this record



	Author	Eliades, M.; Bruggeman, A.; Djuma, H.; Christofi, C.; Kuells, C.
	Title	Quantifying Evapotranspiration and Drainage Losses in a Semi-Arid Nectarine (Prunus persica var. nucipersica) Field with a Dynamic Crop Coefficient (Kc) Derived from Leaf Area Index Measurements			Type	Journal Article
	Year	2022	Publication	Water	Abbreviated Journal
	Volume	14	Issue	5	Pages
	Keywords
	Abstract	Quantifying evapotranspiration and drainage losses is essential for improving irrigation efficiency. The FAO-56 is the most popular method for computing crop evapotranspiration. There is, however, a need for locally derived crop coefficients (Kc) with a high temporal resolution to reduce errors in the water balance. The aim of this paper is to introduce a dynamic Kc approach, based on Leaf Area Index (LAI) observations, for improving water balance computations. Soil moisture and meteorological data were collected in a terraced nectarine (Prunus persica var. nucipersica) orchard in Cyprus, from 22 March 2019 to 18 November 2021. The Kc was derived as a function of the canopy cover fraction (c), from biweekly in situ LAI measurements. The use of a dynamic Kc resulted in Kc estimates with a bias of 17 mm and a mean absolute error of 0.8 mm. Evapotranspiration (ET) ranged from 41% of the rainfall (P) and irrigation (I) in the wet year (2019) to 57% of P + I in the dry year (2021). Drainage losses from irrigation (DR_I) were 44% of the total irrigation. The irrigation efficiency in the nectarine field could be improved by reducing irrigation amounts and increasing the irrigation frequency. Future studies should focus on improving the dynamic Kc approach by linking LAI field observations with remote sensing observations and by adding ground cover observations.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	2073-4441	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @ w14050734			Serial	85
Permanent link to this record



	Author	Ardelt, G.; Külls, C.; Hellbrück, H.
	Title	Towards intrinsic molecular communication using isotopic isomerism			Type	Journal Article
	Year	2018	Publication	Open Journal of Internet Of Things (OJIOT)	Abbreviated Journal
	Volume	4	Issue	1	Pages	135-143
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher	RonPub	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @ Ardelt2018towards			Serial	18
Permanent link to this record



	Author	Christofi, C.; Bruggeman, A.; Külls, C.; Constantinou, C.
	Title	Hydrochemical evolution of groundwater in gabbro of the Troodos Fractured Aquifer. A comprehensive approach			Type	Journal Article
	Year	2020	Publication	Applied Geochemistry	Abbreviated Journal
	Volume	114	Issue		Pages	104524
	Keywords	geochemistry
	Abstract
	Address
	Corporate Author				Thesis
	Publisher	Pergamon	Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @ Christofi2020hydrochemical			Serial	13
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	Author	Lightfoot, D.R.
	Title	Moroccan khettara: Traditional irrigation and progressive desiccation			Type	Journal Article
	Year	1996	Publication	Geoforum	Abbreviated Journal
	Volume	27	Issue	2	Pages	261-273
	Keywords
	Abstract	A 300 km network of khettara (qanat) subsurface irrigation channels was excavated in the Tafilalt basin beginning in the late 14th century. More than 75 of these chains provided perennial water following the breakup of the ancient city of Sijilmassa. Khettara continued to function for much of the northern oasis until the early 1970s, when new technologies and government policies forced changes. Data on origins, maintenance, and current use were collected from archival sources, aerial photographs, Landsat imagery, and from interviews. Insufficient water resources and unsustainable practices have dramatically lowered the water table, drying up khettara. This has resulted in a loss of local control over water resources, abandonment of a sustainable irrigation system, and progressive desiccation.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0016-7185	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @ Lightfoot1996261			Serial	257
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	Author	Vogel, J.C.; Talma, A.S.; Heaton, T.H.E.
	Title	Gaseous nitrogen as evidence for denitrification in groundwater			Type	Journal Article
	Year	1981	Publication	Journal of Hydrology	Abbreviated Journal
	Volume	50	Issue		Pages	191-200
	Keywords
	Abstract	By investigating the nitrate, oxygen, nitrogen and argon concentrations and 15N14N ratios in artesian groundwater with radiocarbon ages ranging up to 27,000 yr. a process of very slow denitrification in a confined aquifer is demonstrated. The calculated nitrogenisotope fractionation factor associated with this reaction is comparable to that reported for bacterial cultures in vitro and in vivo.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0022-1694	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @ Vogel1981191			Serial	280
Permanent link to this record