Search Results - "Stewart, Michael K"

Truncation of stream residence time: how the use of stable isotopes has skewed our concept of streamwater age and origin by Stewart, Michael K, Morgenstern, Uwe, McDonnell, Jeffrey J

“…Although early studies of streamwater residence time included the use of stable isotopes (deuterium, oxygen-18) and tritium, work in the last decades has…”
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Loss of Panx1 Impairs Mammary Gland Development at Lactation: Implications for Breast Tumorigenesis by Stewart, Michael K G, Plante, Isabelle, Penuela, Silvia, Laird, Dale W

“…Pannexin1 (Panx1) subunits oligomerize to form large-pore channels between the intracellular and extracellular milieu that have been shown to regulate…”
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Effect of bedrock permeability on stream base flow mean transit time scaling relationships: 2. Process study of storage and release by Hale, V. Cody, McDonnell, Jeffrey J., Stewart, Michael K., Solomon, D. Kip, Doolitte, Jim, Ice, George G., Pack, Robert T.

“…In Part 1 of this two‐part series, Hale and McDonnell (2016) showed that bedrock permeability controlled base flow mean transit times (MTTs) and MTT scaling…”
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The severity of mammary gland developmental defects is linked to the overall functional status of Cx43 as revealed by genetically modified mice by Stewart, Michael K G, Gong, Xiang-Qun, Barr, Kevin J, Bai, Donglin, Fishman, Glenn I, Laird, Dale W

“…Genetically modified mice mimicking ODDD (oculodentodigital dysplasia), a disease characterized by reduced Cx43 (connexin 43)-mediated gap junctional…”
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Hydrometric and natural tracer (oxygen-18, silica, tritium and sulphur hexafluoride) evidence for a dominant groundwater contribution to Pukemanga Stream, New Zealand by Stewart, Michael K, Mehlhorn, Jens, Elliott, Sandy

“…Pukemanga is a small (3 ha) steep headwater catchment at the Whatawhata Research Station near Hamilton, New Zealand. The water balance (1996-2002) shows…”
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Mammary gland specific knockdown of the physiological surge in Cx26 during lactation retains normal mammary gland development and function by Stewart, Michael K G, Plante, Isabelle, Bechberger, John F, Naus, Christian C, Laird, Dale W

“…Connexin26 (Cx26) is the major Cx protein expressed in the human mammary gland and is up-regulated during pregnancy while remaining elevated throughout…”
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Mean residence times and sources of Christchurch springs by Stewart, Michael K., Morgenstern, Uwe, Tsujimura, Maki, Gusyev, Maksym A., Sakakibara, Koichi, Imaizumi, Yuki, Rutter, Helen, van der Raaij, Rob, Etheridge, Zeb, Scott, Lisa, Cox, Simon C.

“…Springs in the Christchurch region were sampled and geochemically analysed with the aim of understanding their sources and subsurface flowpaths. As well as the…”
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A 40-year record of carbon-14 and tritium in the Christchurch groundwater system, New Zealand: Dating of young samples with carbon-14 by Stewart, Michael K.

“…► Carbon-14 and tritium have been used to determine ages in a long-term study of the Christchurch groundwater system. ► This system is in a silicate terrain…”
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Short high-accuracy tritium data time series for assessing groundwater mean transit times in the vadose and saturated zones of the Luxembourg Sandstone aquifer by Gourdol, Laurent, Stewart, Michael K, Morgenstern, Uwe, Pfister, Laurent

“…Among the manifold of environmental tracers at hand, tritium is the only one that can give information on groundwater age within the timescale of 100 years for…”
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Aggregation effects on tritium-based mean transit times and young water fractions in spatially heterogeneous catchments and groundwater systems by Stewart, Michael K, Morgenstern, Uwe, Gusyev, Maksym A, Małoszewski, Piotr

“…Kirchner (2016a) demonstrated that aggregation errors due to spatial heterogeneity, represented by two homogeneous subcatchments, could cause severe…”
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A Neuropathological Study of Diffuse Vascular Injury in Fatal Motor Vehicle Collisions by Stewart, Michael K G, Shkrum, Michael J, McClafferty, Kevin J, Mao, Haojie, Zhang, Qi

“…Abstract In Canada, 42 929 people were involved in fatal motor vehicle collisions (MVCs) between 1999 and 2018. Traumatic brain injuries (TBIs), including…”
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Importance of tritium‐based transit times in hydrological systems by Stewart, Michael K., Morgenstern, Uwe

“…Disappearance of bomb tritium from the atmospheres of both hemispheres in recent years means that tritium is becoming more effective for determining transit…”
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Insights into the role of connexins in mammary gland morphogenesis and function by Stewart, Michael K G, Simek, Jamie, Laird, Dale W

“…Gap junctions formed of connexin subunits link adjacent cells by direct intercellular communication that is essential for normal tissue homeostasis in the…”
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A GLUE-based uncertainty assessment framework for tritium-inferred transit time estimations under baseflow conditions by Gallart, Francesc, Roig-Planasdemunt, Maria, Stewart, Michael K., Llorens, Pilar, Morgenstern, Uwe, Stichler, Willibald, Pfister, Laurent, Latron, Jérôme

“…The last decade has seen major technical and scientific improvements in the study of water transfer time through catchments. Nevertheless, it has been argued…”
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Evaluation of mammary gland development and function in mouse models by Plante, Isabelle, Stewart, Michael K G, Laird, Dale W

“…The human mammary gland is composed of 15-20 lobes that secrete milk into a branching duct system opening at the nipple. Those lobes are themselves composed of…”
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Application of tritium in precipitation and baseflow in Japan: a case study of groundwater transit times and storage in Hokkaido watersheds by Gusyev, Maksym A, Morgenstern, Uwe, Stewart, Michael K, Yamazaki, Yusuke, Kashiwaya, Kazuhisa, Nishihara, Terumasa, Kuribayashi, Daisuke, Sawano, Hisaya, Iwami, Yoichi

“…In this study, we demonstrate the application of tritium in precipitation and baseflow to estimate groundwater transit times and storage volumes in Hokkaido,…”
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Cx26 knockout predisposes the mammary gland to primary mammary tumors in a DMBA-induced mouse model of breast cancer by Stewart, Michael K G, Bechberger, John F, Welch, Ian, Naus, Christian C, Laird, Dale W

“…Down-regulation of the gap junction protein connexin26 (Cx26) is an early event following breast cancer onset and has led to Cx26 being classically described…”
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Nitrate sources and residence times of groundwater in the Waimea Plains, Nelson by Stewart, Michael K., Stevens, Glenn, Thomas, Joseph T., van der Raaij, Rob, Trompetter, Vanessa

“…Nitrate concentrations exceeding Ministry of Health potable limits (11.3mg/L nitrate-N) have been a problem for Waimea Plains groundwater for a number of…”
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Identifying leakage to groundwater from Lake Rerewhakaaitu using isotopic and water quality data by Reeves, Robert R., Morgenstern, Uwe, Daughney, Christopher J., Stewart, Michael K., Gordon, Dougall

“…Stable isotopes (¹⁸O, ²H), water dating, and major anion and cation water chemistry of springs, groundwater bores, a stream and a lake have been used to…”
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Estimating rainfall recharge and soil water residence times in Pukekohe, New Zealand, by combining geophysical, chemical, and isotopic methods by Rosen, M.R, Bright, J, Carran, P, Stewart, M.K, Reeves, R

“…The combined use of geophysical (time domain reflectometry [TDR]), isotopic (delta(18)O and delta(2)H) and chemical (NO(3)-N, Cl) techniques indicates that…”
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