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Journal articles on the topic 'SWy-2'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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1

Ammar, Marwa, and Walid Oueslati. "Crystalline Swelling Process of Mg-Exchanged Montmorillonite: Effect of External Environmental Solicitation." Advances in Civil Engineering 2018 (October 16, 2018): 1–18. http://dx.doi.org/10.1155/2018/8130932.

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This work reports characterization of the possible effects that might distress the hydration properties of Mg-exchanged low-charge montmorillonite (SWy-2) when it undergoes external environmental solicitation. This perturbation was created by an alteration of relative humidity rates (i.e., RH%) over two hydration-dehydration cycles with different sequence orientations. Structural characterization is mainly based on the X-ray diffraction (XRD) profile-modeling approach achieved by comparing the “in situ” obtained experimental 00l reflections with other ones calculated from theoretical models. T

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2

Schomberg, Anna C., Klaus Wemmer, Laurence N. Warr, and Georg H. Grathoff. "K–Ar age determinations on the fine fractions of clay mineral ‘Crystallinity Index Standards’ from the Palaeozoic mudrocks of southwest England." Clay Minerals 54, no. 1 (2019): 15–26. http://dx.doi.org/10.1180/clm.2019.3.

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AbstractClay mineral ‘Crystallinity Index Standards’ (CIS) composed of Palaeozoic mudrocks from southwest England were investigated systematically in five sub-fractions per sample for the first time. X-ray diffraction was used to determine mineral assemblages, calibrated 001 illite full-width-at-half-maximum (FWHM) values and illite polytype compositions, in addition to K–Ar isotopic analyses of all fine fractions. The FWHM results of the <2 µm fraction are consistent with previous studies and reflect the range of diagenetic to epizonal grades covered by the sample set SW1 to SW7 (~0.61–0.2

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Thiebault, T., M. Boussafir, L. Le Forestier, C. Le Milbeau, L. Monnin, and R. Guégan. "Competitive adsorption of a pool of pharmaceuticals onto a raw clay mineral." RSC Advances 6, no. 69 (2016): 65257–65. http://dx.doi.org/10.1039/c6ra10655b.

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The removal of a Pharmaceutically Active Compound (PhAC) pool using a well referenced clay mineral from Wyoming (SWy-2) as a geosorbent was studied for a better understanding of the environmental fate.

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Breen, C., та A. J. Moronta. "Influence of exchange cation and layer charge on the isomerization of α-pinene over SWy-2, SAz-1 and Sap-Ca". Clay Minerals 36, № 4 (2001): 467–72. http://dx.doi.org/10.1180/0009855013640001.

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AbstractSWy-2 (Wyoming), Sap-Ca saponite (California) and SAz-1 (Cheto, Arizona) were exchanged with different cations (Al, Ni, Mg, Ca and Na). The catalytic activity of these ionexchanged clays was measured directly using the isomerization of α-pinene at 80°C for 2 h to yield camphene, limonene and other minor products. The order of activity for the different cationexchanged forms was Al > Ni > Mg > Ca > Na, which correlated well with the known polarizing power of these cations and the resulting interlayer acidity. Catalysts derived from Sap-Ca were the most active followed by SWy

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Arroyo, L. Jacqueline, Hui Li, Brian J. Teppen, Cliff T. Johnston, and Stephen A. Boyd. "Hydrolysis of Carbaryl by Carbonate Impurities in Reference Clay SWy-2." Journal of Agricultural and Food Chemistry 52, no. 26 (2004): 8066–73. http://dx.doi.org/10.1021/jf048971b.

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Lombardo, Patrícia Coelho, Alessandra Lima Poli, and Carla Cristina Schmitt. "Influência de estabilizantes na degradação foto-oxidativa de filmes de compósitos de SWy-1/poli(óxido de etileno)." Polímeros 25, no. 1 (2015): 101–8. http://dx.doi.org/10.1590/0104-1428.1604.

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Compósitos de poli(óxido de etileno) (PEO) com argila montmorilonita SWy-1 e estabilizantes (2-hidroxibenzofenona e tinuvin 770) foram preparados pelo método de intercalação em solução. Os filmes obtidos foram expostos a irradiação UV, e os produtos da fotodegradação foram monitorados por FTIR (Fourier Transform Infrared Spectroscopy, ou Espectroscopia no infravermelho por transformada de Fourier) e SEC (Size Exclusion Chromatography, ou cromatografia de exclusão por tamanho). O PEO puro apresentou maior coeficiente de degradação, kd, comparado com as demais amostras. O sistema que apresentou

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7

Myllykylä, E., M. Tanhua-Tyrkkö, A. Bouchet, and M. Tiljander. "Dissolution experiments of Na- and Ca-montmorillonite in groundwater simulants under anaerobic conditions." Clay Minerals 48, no. 2 (2013): 295–308. http://dx.doi.org/10.1180/claymin.2013.048.2.11.

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AbstractThe effects of simulant groundwater composition, pH and temperature on the dissolution and alteration of Na- and Ca-montmorillonite have been studied. Prior to the experiments, Wyoming type Na-montmorillonite, Swy-2, was purified to decrease the amount of accessory minerals. For Ca-montmorillonite experiments, the interlayer cation Na+ of purified Swy-2 was exchanged with Ca2+. The batch experiments were conducted with the purified montmorillonites in simulated fresh and saline waters at 25°C and 60°C under anaerobic conditions in an Ar atmosphere. The concentrations of Si, Al, Fe and

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8

O’Loughlin, Edward J., Maxim I. Boyanov, Kenneth M. Kemner, and Korbinian O. Thalhammer. "Reduction of Hg(II) by Fe(II)-Bearing Smectite Clay Minerals." Minerals 10, no. 12 (2020): 1079. http://dx.doi.org/10.3390/min10121079.

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Aluminosilicate clay minerals are often a major component of soils and sediments and many of these clays contain structural Fe (e.g., smectites and illites). Structural Fe(III) in smectite clays is redox active and can be reduced to Fe(II) by biotic and abiotic processes. Fe(II)-bearing minerals such as magnetite and green rust can reduce Hg(II) to Hg(0); however, the ability of other environmentally relevant Fe(II) phases, such as structural Fe(II) in smectite clays, to reduce Hg(II) is largely undetermined. We conducted experiments examining the potential for reduction of Hg(II) by smectite

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9

Xiao, Hui-Hui, Yi Dai, Hoi-Ying Wan, Man-Sau Wong, and Xin-Sheng Yao. "Bone-protective effects of bioactive fractions and ingredients in Sambucus williamsii HANCE." British Journal of Nutrition 106, no. 12 (2011): 1802–9. http://dx.doi.org/10.1017/s0007114511002546.

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Our previous study demonstrated that 60 % ethanol crude extract of Sambucus williamsii HANCE (SWH) improved bone mass, bone strength and bone micro-structure in both ovariectomised (OVX) rats and mice. The present study aims to identify the bioactive fractions and ingredients in SWH that account for its osteoprotective effects. Bilateral sham-operated mice acted as controls. OVX C57BL/6J mice, aged 12 weeks, were orally administrated daily with vehicle or 17β-oestradiol (3·2 mg/kg), SWH (60 % ethanol crude extract; 1·0 g/kg), SWA (water eluate; 0·570 g/kg), SWB (30 % ethanol eluate; 0·128 g/kg

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10

Wang, Zhenzhen, Tao Wang, Hongbo Fu, et al. "Enhanced heterogeneous uptake of sulfur dioxide on mineral particles through modification of iron speciation during simulated cloud processing." Atmospheric Chemistry and Physics 19, no. 19 (2019): 12569–85. http://dx.doi.org/10.5194/acp-19-12569-2019.

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Abstract. Iron-containing mineral aerosols play a key role in the oxidation of sulfur species in the atmosphere. Simulated cloud processing (CP) of typical mineral particles, such as illite (IMt-2), nontronite (NAu-2), smectite (SWy-2) and Arizona Test Dust (ATD) is shown here to modify sulfur dioxide (SO2) uptake onto mineral surfaces. Heterogeneous oxidation of SO2 on particle surfaces was firstly investigated using an in situ DRIFTS apparatus (diffuse reflectance infrared Fourier transform spectroscopy). Our results showed that the Brunauer–Emmett–Teller (BET) surface area normalized uptake

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11

Szabó, Zsuzsanna, Csaba Hegyfalvi, Ágnes Freiler-Nagy, et al. "Geochemical reactions of Na-montmorillonite in dissolved scCO2 in relevance of modeling caprock behavior in CO2 geological storage." Periodica Polytechnica Chemical Engineering 63, no. 2 (2019): 318–27. http://dx.doi.org/10.3311/ppch.12850.

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One of the challenges of the present century is to limit the greenhouse gas emissions for the mitigation of climate change which is possible for example by a transitional technology, CO2 geological storage. Clay minerals are considered to be responsible for the low permeability and sealing capacity of caprocks sealing off stored CO2. However, their reactions are not well understood for complex simulations. This work aims to create a kinetic geochemical model of Na-montmorillonite standard SWy-2 supported by solution and mineral composition results from batch experiments. Such experimentally va

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Kang, Il Mo, Myung Hun Kim, Youn Joong Kim, Hi-Soo Moon, and Yungoo Song. "Evaluation of expandability for randomly interstratified illite/smectite using interstratificational peak broadening." Powder Diffraction 20, no. 3 (2005): 230–32. http://dx.doi.org/10.1154/1.1894086.

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This study attempted to quantify the interstratificational broadening of the randomly interstratified illite/smectite (random I∕S) basal reflection and to evaluate the percentage of the interstratified illite layers (%I) from the result. The interstratificational broadening was quantified using the distributional discrepancy (D) defined as D=[∑t∣ft(obs)−ft(ref)∣]∕2, where ft(obs) is the frequency of a crystallite containing thickness, t (the number of layers), measured from a basal reflection broadened by interstratifications, and ft(ref) is the frequency for a basal reflection with no interst

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13

Du, Mingyong, Pengfei Liu, Jing-En Wong, Peta L. Clode, Jishan Liu, and Yee-Kwong Leong. "Colloidal forces, microstructure and thixotropy of sodium montmorillonite (SWy-2) gels: Roles of electrostatic and van der Waals forces." Applied Clay Science 195 (September 2020): 105710. http://dx.doi.org/10.1016/j.clay.2020.105710.

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14

Huang, Wensheng. "Voltammetric Determination of Bismuth in Water and Nickel Metal Samples with a Sodium Montmorillonite (SWy-2) Modified Carbon Paste Electrode." Microchimica Acta 144, no. 1-3 (2004): 125–29. http://dx.doi.org/10.1007/s00604-003-0104-3.

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15

Pinti, V., C. Marcolli, B. Zobrist, C. R. Hoyle, and T. Peter. "Ice nucleation efficiency of clay minerals in the immersion mode." Atmospheric Chemistry and Physics 12, no. 13 (2012): 5859–78. http://dx.doi.org/10.5194/acp-12-5859-2012.

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Abstract. Emulsion and bulk freezing experiments were performed to investigate immersion ice nucleation on clay minerals in pure water, using various kaolinites, montmorillonites, illites as well as natural dust from the Hoggar Mountains in the Saharan region. Differential scanning calorimeter measurements were performed on three different kaolinites (KGa-1b, KGa-2 and K-SA), two illites (Illite NX and Illite SE) and four natural and acid-treated montmorillonites (SWy-2, STx-1b, KSF and K-10). The emulsion experiments provide information on the average freezing behaviour characterized by the a

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16

Xiang, Yan, and Gilles Villemure. "Electron transport in clay-modified electrodes: study of electron transfer between electrochemically oxidized tris (2,2′-bipyridyl) iron cations and clay structural iron(II) sites." Canadian Journal of Chemistry 70, no. 6 (1992): 1833–37. http://dx.doi.org/10.1139/v92-227.

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The cyclic voltammograms of tris (2,2′-bipyridyl) iron(II) ([Fe(bpy)3]2+) adsorbed in clay-modified electrodes made from a range of different smectites were recorded. In all cases, at low scan speed (1 mV/s), the initial anodic peak current was much larger than the initial cathodic peak current. Partial reduction of the clay structural iron further increased the initial anodic to cathodic current ratio, suggesting that the discrepancy between the charge transferred in the anodic and cathodic scans was due to a slow electron transfer between the clay structural Fe(II) and the oxidized bipyridyl

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17

Ye, Peng, and Ann T. Lemley. "Adsorption Effect on the Degradation of Carbaryl, Mecoprop, and Paraquat by Anodic Fenton Treatment in an SWy-2 Montmorillonite Clay Slurry." Journal of Agricultural and Food Chemistry 56, no. 21 (2008): 10200–10207. http://dx.doi.org/10.1021/jf801922r.

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18

He, Maosheng, and Jorge Luis Chau. "Mesospheric semidiurnal tides and near-12 h waves through jointly analyzing observations of five specular meteor radars from three longitudinal sectors at boreal midlatitudes." Atmospheric Chemistry and Physics 19, no. 9 (2019): 5993–6006. http://dx.doi.org/10.5194/acp-19-5993-2019.

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Abstract. In the last decades, mesospheric tides have been intensively investigated with observations from both ground-based radars and satellites. Single-site radar observations provide continuous measurements at fixed locations without horizontal information, whereas single-spacecraft missions typically provide global coverage with limited temporal coverage at a given location. In this work, by combining 8 years (2009–2016) of mesospheric winds collected by five specular meteor radars from three different longitudinal sectors at boreal midlatitudes (49±8.5∘ N), we develop an approach to inve

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19

Pratama, M. Mirza Abdillah, Septiana Dyah Sugmana Putri, and Edi Santoso. "Analisis Kinerja Bangunan Gedung Tinggi Dengan Penambahan Dinding Geser (Studi Kasus: Bangunan 8 Lantai)." Siklus : Jurnal Teknik Sipil 7, no. 2 (2021): 119–30. http://dx.doi.org/10.31849/siklus.v7i2.6922.

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Shear walls in high-rise buildings serve to increase the resistance of high-rise buildings to lateral loads. This study aims to compare the structural performance of an existing 8 (eight) storey building designed as a special moment resisting frame structure against a building designed as a dual system, which consists of: structural vibration time, base shear force, displacement, and drift. Three configurations for shear walls are designed, as follows: (1) L-shaped located at the corner of one side of the building, totaling 2 (two) units (SW1); (2) L-shaped located at the four corners of the b

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Gautier, M., F. Muller, J. M. Beny, L. Le Forestier, P. Alberic, and P. Baillif. "Interactions of ammonium smectite with low-molecular-weight carboxylic acids." Clay Minerals 44, no. 2 (2009): 207–19. http://dx.doi.org/10.1180/claymin.2009.044.2.207.

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AbstractThe percolation of water through waste landfill sites produces leachates with large amounts of pollutants. Clay barriers are often used to limit soil and underground water pollution. A better understanding of the interaction between ammonium smectite and carboxylic acids would contribute significantly to our understanding of such systems. The SWy-2 (Wyoming smectite) was exchanged with NH4+ and then batched with carboxylic acids (acetic, formic, chloroacetic and oxalic) in concentrations between 0.01 M and 1 M. The solid phases obtained were analysed chemically and characterized by inf

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21

Ammar, Marwa, Walid Oueslati, Hafsia Ben Rhaiem, and Abdesslem Ben Haj Amara. "XRD profile modeling approach tools to investigate the effect of charge location on hydration behavior in the case of metal exchanged smectite." Powder Diffraction 28, S2 (2013): S284—S300. http://dx.doi.org/10.1017/s0885715613000973.

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This work aims to investigate the hydration behavior and structural properties of two dioctahedral smectites with contrasting location charge (beidellite SbId-1 and montmorillonite SWy-2) according to the nature of the bivalent compensator heavy metal cations (i.e. Hg (II), Ni (II), Ba (II) and Mg (II)). This study is achieved using XRD profile modeling approach based on the simulation of the 00l reflection which allowed us to determine structural characteristics along the c* axis related to the nature, abundance, size, position and organization of exchangeable cation and water molecule in the

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Kozlowski, Tomasz, Anna Rusin та Edyta Nartowska. "The specific heat of dry homoionic forms of bentonites SWy-2 and Stx-1b: An effect of the fraction of particles less than 2μm". Applied Clay Science 101 (листопад 2014): 82–89. http://dx.doi.org/10.1016/j.clay.2014.07.021.

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Oueslati, Walid, Nejmeddine Chorfi, and Mohamed Abdelwahed. "Effect of mechanical constraint on the hydration properties of Na-montmorillonite: study under extreme relative humidity conditions." Powder Diffraction 32, S1 (2017): S160—S167. http://dx.doi.org/10.1017/s088571561700046x.

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The evaluation of the performance of a geological barrier, consisting essentially of a clay matrix, in the context of industrial and household waste confinement must go with the study of its hydration behavior respectively under extreme atmospheric conditions and variable mechanical soil constraints. Na-montmorillonite (Swy-2) is used, as starting materials, in order to establish the link between applied externals strain (variable relative humidity rate %RH and axial mechanical constraint) and the hydration material response. All constraints are realized at the laboratory scale. This work is a

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Pinti, V., C. Marcolli, B. Zobrist, C. R. Hoyle, and T. Peter. "Ice nucleation efficiency of clay minerals in the immersion mode." Atmospheric Chemistry and Physics Discussions 12, no. 1 (2012): 3213–61. http://dx.doi.org/10.5194/acpd-12-3213-2012.

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Abstract. Emulsion and bulk freezing experiments were performed to investigate immersion ice nucleation on clay minerals in pure water, using various kaolinites, montmorillonites, illites as well as natural dust from the Hoggar Mountains in the Saharan region. DSC (differential scanning calorimeter) measurements were performed on the kaolinites KGa-1b and KGa-2 from the Clay Mineral Society and kaolinite from Sigma-Aldrich; the montmorillonites SWy-2 and STx-1b from the Clay Mineral Society and the acid treated montmorillonites KSF and K-10 from Sigma Aldrich; the illites NX and SE from Argino

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Ammar, Marwa, Walid Oueslati, Nejmeddine Chorfi, and Abdesslem Ben Haj Amara. "The water retention mechanism of a Cs+ and Na+ exchanged montmorillonite: effect of relative humidity and ionic radius on the interlayer." Powder Diffraction 30, S1 (2015): S70—S75. http://dx.doi.org/10.1017/s0885715614001420.

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Dioctahedral smectites are clay minerals that widely used as a crucial component for the edifice of natural barriers in industrial wastes and wastewater treatment. The hydration behaviours of these mineral types are very sensitive by environmental surroundings changes. The present work focuses the evolution of the interlayer water amount as a function of the relative humidity rates (RH), varied along a humidifying-drying cycle, in the case of two dioctahedral smectites with different charge location (i.e. Wyoming montmorillonite SWy-2 and Beidellite SbId-1). The CEC (i.e. cation exchange capac

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Chen, P., M. Naji, N. Sattari, L. N. Whitehurst, and S. C. Mednick. "0063 Age Related Changes in Central Autonomic Couplings During Sleep." Sleep 43, Supplement_1 (2020): A26. http://dx.doi.org/10.1093/sleep/zsaa056.061.

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Abstract Introduction Studies show coupling between central nervous system (CNS) and autonomic nervous system (ANS) activity during sleep. We reported on a novel central/autonomic coupling event (ACE) during non-rapid eye movement (NREM) sleep, in which bursts in heart rate (HRBs) coincide with increased slow-wave activity (SWA) 5 seconds prior to the HRB, followed by a surge in vagal high-frequency activity in the RR signal (HFRR) 5 seconds after the HRB. ACEs predicted sleep-related explicit memory improvement. Aging is characterized with impaired sleep and autonomic loss. We, therefore, inv

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Edwards, Christopher, Erika Cavanagh, Sailesh Kumar, Vicki Clifton, and Davide Fontanarosa. "Intra-System Reliability Assessment of 2-Dimensional Shear Wave Elastography." Applied Sciences 11, no. 7 (2021): 2992. http://dx.doi.org/10.3390/app11072992.

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The availability of 2-Dimensional Shear Wave Elastography (2D-SWE) technology on modern medical ultrasound systems is becoming increasingly common. The technology is now being used to investigate a range of soft tissues and related pathological conditions. This work investigated the reliability of a single commercial 2D-SWE system using a tissue-mimicking elastography phantom to understand the major causes of intra-system variability. Sources of shear wave velocity (SWV) measurement variability relates to imaging depth, target stiffness, sampling technique and the operator. Higher SWV measurem

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Maillette, Sébastien, Caroline Peyrot, Tapas Purkait, Muhammad Iqbal, Jonathan G. C. Veinot, and Kevin J. Wilkinson. "Heteroagglomeration of nanosilver with colloidal SiO2 and clay." Environmental Chemistry 14, no. 1 (2017): 1. http://dx.doi.org/10.1071/en16070.

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Environmental contextThe fate of nanomaterials in the environment is related to their colloidal stability. Although numerous studies have examined their homoagglomeration, their low concentration and the presence of high concentrations of natural particles implies that heteroagglomeration rather than homoagglomeration is likely to occur under natural conditions. In this paper, two state-of-the art analytical techniques were used to identify the conditions under which nanosilver was most likely to form heteroagglomerates in natural waters. AbstractThe environmental risk of nanomaterials will de

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29

Orfánus, Tomáš, Dagmar Stojkovová, Kálmán Rajkai, Henryk Czachor, and Renáta Sándor. "Spatial patterns of wetting characteristics in grassland sandy soil." Journal of Hydrology and Hydromechanics 64, no. 2 (2016): 167–75. http://dx.doi.org/10.1515/johh-2016-0010.

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Abstract In grasslands where organic and inorganic resources are alternating at scales of individual plants, the transient character is given to certain wetting properties of soil, which then become highly variable both in space and in time. The objective of presented study was to study wetting pattern within two soil horizons at 5-cm and 10-cm depths respectively and to examine how the wetting patterns relate to hydraulic conductivity determined by Minidisc infiltrometer at suction −2 cm, K(−2 cm). This characteristics is implicitly independent on antecedent soil water content (SWC) since it

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Mudryk, L. R., C. Derksen, P. J. Kushner, and R. Brown. "Characterization of Northern Hemisphere Snow Water Equivalent Datasets, 1981–2010." Journal of Climate 28, no. 20 (2015): 8037–51. http://dx.doi.org/10.1175/jcli-d-15-0229.1.

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Abstract Five, daily, gridded, Northern Hemisphere snow water equivalent (SWE) datasets are analyzed over the 1981–2010 period in order to quantify the spatial and temporal consistency of satellite retrievals, land surface assimilation systems, physical snow models, and reanalyses. While the climatologies of total Northern Hemisphere snow water mass (SWM) vary among the datasets by as much as 50%, their interannual variability and daily anomalies are comparable, showing moderate to good temporal correlations (between 0.60 and 0.85) on both interannual and intraseasonal time scales. Wintertime

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Souza, William Luiz de, Iorrano Andrade Cidrini, Arnaldo Prata Neiva Júnior, et al. "Effect of rehydration with whey and inoculation with Lactobacillus plantarum and Propionibacterium acidipropionici on the chemical composition, microbiological dynamics, and fermentative losses of corn grain silage." Semina: Ciências Agrárias 41, no. 6supl2 (2020): 3351–64. http://dx.doi.org/10.5433/1679-0359.2020v41n6supl2p3351.

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The objective of this study was to compare rehydrated corn grain silages using water or whey and inoculated (Lactobacillus plantarum and Propionibacterium acidipropionici) or not. We also verified whether rehydration with whey associated with the bacterial inoculant improves material conservation. The treatments were as follows: silages rehydrated with water without inoculant (SWa); silages rehydrated with water and inoculated (SWaI); silages rehydrated with whey without inoculant (SWe); silages rehydrated with whey and inoculated (SWeI). A completely randomized design was used, with three rep

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Nwosu, L. C., C. O. Adedire, and E. O. Ogunwolu. "Feeding site preference of Sitophilus zeamais (Coleoptera: Curculionidae) on maize grain." International Journal of Tropical Insect Science 35, no. 02 (2015): 62–68. http://dx.doi.org/10.1017/s1742758415000065.

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The possibility thatSitophilus zeamaisMotschulsky prefers a particular grain side and a grain side area for feeding, and the implications and value in maize programmes' breeding for resistance were investigated in the laboratory at ambient temperature (32.7 °C) and relative humidity (70.4%) using standard techniques. A total of 20 elite maize varieties were used: TZBRCOMP.2C1F1, TZBRELD3C5, PVASYN-3F2, PVASYN-6F2, DTSYN-11-W, BR9943DMRSR, IWDC3SNY-W, WHITEDTSTRSYN, 2008DTMA-YSTR and 2000SYNEE-WSTR, obtained from the Maize Breeding Unit of International Institute for Tropical Agriculture (IITA)

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Harcourt, Ramsey R., and Eric A. D’Asaro. "Measurement of Vertical Kinetic Energy and Vertical Velocity Skewness in Oceanic Boundary Layers by Imperfectly Lagrangian Floats." Journal of Atmospheric and Oceanic Technology 27, no. 11 (2010): 1918–35. http://dx.doi.org/10.1175/2010jtecho731.1.

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Abstract The effects of upward buoyancy on the accuracy with which Lagrangian floats can measure the Eulerian mean variance 〈ww〉E and skewness SwE of vertical fluid velocity w in the wind-driven upper-ocean boundary layer is investigated using both simulated floats in large-eddy simulation (LES) models and two float datasets. Nearly neutrally buoyant floats are repeatedly advected by the turbulent velocities across the boundary layer. Their vertical position Z is determined from pressure measurements; their W variance 〈WW〉F and skewness SWE are determined from the time series of float W = dZ/d

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Ricciardiello, Andrea, Sharon Naismith, Angela D’Rozario, Fiona Kumfor, and Rick Wassing. "033 The effect of sleep disturbance on cognition in late-life depression." Sleep 44, Supplement_2 (2021): A15. http://dx.doi.org/10.1093/sleep/zsab072.032.

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Abstract Introduction Late-life depression is the most common psychiatric disorder in older adults and is associated with cognitive deficits, however, the role of sleep disturbance in cognitive deficits is poorly defined. In the current study we aimed to examine sleep macro and micro-architecture differences between those with late-life depression and controls. Secondly, we sought to determine how sleep changes relate to clinical memory and executive function measures in those with late-life depression and controls. Methods Using prior clinical data, this retrospective study assessed adults &a

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International Labour Law Reports, Editors. "Swe. 2 SWEDEN." International Labour Law Reports Online 23, no. 1 (2002): 149–55. http://dx.doi.org/10.1163/221160203x00166.

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International Labour Law Reports, Editors. "SWEDEN Swe 2." International Labour Law Reports Online 6, no. 1 (1985): 168–72. http://dx.doi.org/10.1163/221160286x00200.

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International Labour Law Reports, Editors. "SWEDEN SWE 2." International Labour Law Reports Online 7, no. 1 (1986): 600–606. http://dx.doi.org/10.1163/221160287x00614.

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International Labour Law Reports, Editors. "SWE. 2 SWEDEN." International Labour Law Reports Online 8, no. 1 (1987): 88–94. http://dx.doi.org/10.1163/221160288x00136.

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International Labour Law Reports, Editors. "SWE. 2 SWEDEN." International Labour Law Reports Online 10, no. 1 (1989): 432–40. http://dx.doi.org/10.1163/221160290x00575.

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International Labour Law Reports, Editors. "SWE.2 SWEDEN." International Labour Law Reports Online 12, no. 1 (1991): 184–87. http://dx.doi.org/10.1163/221160292x00294.

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International Labour Law Reports, Editors. "Swe.2 SWEDEN." International Labour Law Reports Online 17, no. 1 (1996): 465–73. http://dx.doi.org/10.1163/221160297x00488.

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Yin, Liping, Fangli Qiao, and Quanan Zheng. "Coastal-Trapped Waves in the East China Sea Observed by a Mooring Array in Winter 2006." Journal of Physical Oceanography 44, no. 2 (2014): 576–90. http://dx.doi.org/10.1175/jpo-d-13-07.1.

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Abstract Using five mooring array observations in the coastal water of the East China Sea (ECS) in winter 2006, the authors identify three kinds of low-frequency waves using the ensemble empirical mode decomposition (EEMD) method. The analysis indicates that the periods of the waves varied from 2 to 10 days, which are consistent with coastal-trapped wave (CTW) modes: the Kelvin wave (KW) mode, the first shelf wave (SW1) mode, and the second shelf wave (SW2) mode. An analytical model is established and the dispersion relation of the waves from the analytical method agrees well with the observat

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Buck, Casey, Makoto Kawai, Ruth O’ Hara, Christina Chick, Lauren Anker, and Logan Schneider. "607 Longer slow wave sleep and exacerbated core symptom severity in autism spectrum disorder." Sleep 44, Supplement_2 (2021): A239. http://dx.doi.org/10.1093/sleep/zsab072.605.

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Abstract Introduction Sleep disturbances in individuals with autism spectrum disorder (ASD) are common, yet previous studies have reported inconsistent findings on the associations between sleep architecture and core features of ASD. Our goal is to examine 1) the difference in sleep architecture, especially SWS, between children with ASD and typically developing controls (TD), 2) the association between SWS and core symptoms in ASD, and 3) the association of slow wave activity (SWA) spectral power and ASD symptoms. Methods We used ambulatory polysomnography (PSG) to record the sleep architectu

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Opuwari, M., M. Amponsah-Dacosta, S. Mohammed, and N. Egesi. "Delineation of sandstone reservoirs of Pletmos Basin offshore South Africa into Flow Units using Core Data." South African Journal of Geology 123, no. 4 (2020): 479–92. http://dx.doi.org/10.25131/sajg.123.0032.

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Abstract The present study is focused on the comparison of petrophysical rock typing and zonation methods of the Valanginian age sandstone in the Pletmos Basin offshore South Africa, to produce a zonation scheme for the low-permeability shaly sandstone reservoirs from core porosity and permeability data. The Valanginian age sediments of the Lower Cretaceous consist predominantly of a shallow marine sequence with interbeds of siltstone, claystone, generally fine-grained sandstone, and glauconitic, with varying amounts of an argillaceous matrix. A core description report was used in conjunction

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Nichols, R. A. B., L. Connelly, C. B. Sullivan, and H. V. Smith. "Identification of Cryptosporidium Species and Genotypes in Scottish Raw and Drinking Waters during a One-Year Monitoring Period." Applied and Environmental Microbiology 76, no. 17 (2010): 5977–86. http://dx.doi.org/10.1128/aem.00915-10.

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ABSTRACT We analyzed 1,042 Cryptosporidium oocyst-positive slides (456 from raw waters and 586 from drinking waters) of which 55.7% contained 1 or 2 oocysts, to determine species/genotypes present in Scottish waters. Two nested PCR-restriction fragment length polymorphism (RFLP) assays targeting different loci (1 and 2) of the hypervariable region of the 18S rRNA gene were used for species identification, and 62.4% of samples were amplified with at least one of the PCR assays. More samples (577 slides; 48.7% from raw water and 51.3% from drinking water) were amplified at locus 1 than at locus

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Buck, C., K. Parker Fong, O. Linkovski, M. Kawai, and R. O’Hara. "0083 Slow Wave Activity During Sleep is Associated with Longitudinal Change in Overnight Memory Recall." Sleep 43, Supplement_1 (2020): A34. http://dx.doi.org/10.1093/sleep/zsaa056.081.

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Abstract Introduction Duration of slow wave sleep (SWS) declines with age and may not be the most sensitive biomarker for memory in older adults. Analyzing the spectral power of slow wave activity (SWA) (0.5–4 Hz) may provide a more sensitive measure to capture the impact of sleep on memory. We investigated the association of SWA at baseline with the change of overnight memory recall over one year in older adults. Methods Participants were 42 community-dwelling healthy older adults (22 women and 20 men). We performed a polysomnography (PSG) and list-learning memory tests at baseline (T1) and a

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Martínez López, Verónica, Domingo González-Lamuño Leguina, Sonia Hernández Hernández, Sara Ceballos Cayón, and Daniel Ortega Quijano. "Habilidades comunicativas y lingüísticas del síndrome de Wolf-Hirschhorn: estudio de caso con fenotipo atenuado. Un estudio de caso." Revista de Investigación en Logopedia 10, no. 1 (2020): 7–16. http://dx.doi.org/10.5209/rlog.64632.

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El síndrome de Wolf-Hirschhorn (SWH) es un síndrome genético neuroevolutivo causado por una deleción del brazo corto del cromosoma 4 (4p16.3). Presentan un fenotipo variable con retraso del crecimiento pre y postnatal, epilepsia, retraso psicomotor, hipotonía, anomalías craneofaciales (facies en “casco griego” y defectos oclusivos), discapacidad intelectual y limitaciones en el uso del lenguaje tanto expresivo como comprensivo. El objetivo de este estudio es describir las habilidades comunicativas y lingüísticas de una niña con fenotipo atenuado de SWH a nivel de desarrollo fonológico, morfoló

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Yencilek, Esin, Aysegul Sarsılmaz, Ozgur Kilickesmez, et al. "The Daily Resistive Index measurement useful tool in the estimation of the optimal time interval between two Shock Wave Lithotripsy sessions." Medical Ultrasonography 17, no. 2 (2015): 175. http://dx.doi.org/10.11152/mu.2013.2066.172.dyr.

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Aims: To monitor the impact of Shock Wave Lithotripsy (SWL) on the renal resisive index (RI) and to investigate the potential of the RI measurement for the estimation of the optimal duration between 2 SWL sessions. Material and methods: Thirty patients with single pelvis renalis stone were included. Participitants were grouped according to their age as group 1 (<40 years, mean age 36.2±3.9 years) and group 2 (≥40 years, mean age 55.4±6.5 years). RI measurement was performed in of all patients prior to SWL. After SWL, RI was monitored daily until RI returned to their pre-SWL values. Results:

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Götschi, Tobias, Nicole Schulz, Jess G. Snedeker, Jonas Hanimann, Martino V. Franchi, and Jörg Spörri. "Three-Dimensional Mapping of Shear Wave Velocity in Human Tendon: A Proof of Concept Study." Sensors 21, no. 5 (2021): 1655. http://dx.doi.org/10.3390/s21051655.

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Ultrasound-based shear wave elastography (SWE) provides the means to quantify tissue mechanical properties in vivo and has proven valuable in detecting degenerative processes in tendons. Its current mode of use is for two-dimensional rendering measurements, which are highly position-dependent. We therefore propose an approach to create a volumetric reconstruction of the mechano-acoustic properties of a structure of interest based on optically tracking the ultrasound probe during free-hand measurement sweeps. In the current work, we aimed (1) to assess the technical feasibility of the three-dim

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Jerez-Timaure, Nancy, Melissa Sánchez-Hidalgo, Rubén Pulido, and Jonathan Mendoza. "Effect of Dietary Brown Seaweed (Macrocystis pyrifera) Additive on Meat Quality and Nutrient Composition of Fattening Pigs." Foods 10, no. 8 (2021): 1720. http://dx.doi.org/10.3390/foods10081720.

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The objective of this study was to evaluate the effects of dietary brown seaweed (Macrocystis pyrifera) additive (SWA) on meat quality and nutrient composition of commercial fattening pigs. The treatments were: Regular diet with 0% inclusion of SWA (CON); Regular diet with 2% SWA (2%-SWA); Regular diet with 4% SWA (4%-SWA). After slaughtering, five carcasses from each group were selected, and longissimus lumborum (LL) samples were taken for meat quality and chemical composition analysis. Meat quality traits (except redness intensity) were not affected (p > 0.05) by treatments. Samples from

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