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Journal articles on the topic 'Thallus thickness'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Lichtenberg, Mads, Rasmus Dyrmose Nørregaard, and Michael Kühl. "Diffusion or advection? Mass transfer and complex boundary layer landscapes of the brown alga Fucus vesiculosus." Journal of The Royal Society Interface 14, no. 128 (2017): 20161015. http://dx.doi.org/10.1098/rsif.2016.1015.

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The role of hyaline hairs on the thallus of brown algae in the genus Fucus is long debated and several functions have been proposed. We used a novel motorized set-up for two-dimensional and three-dimensional mapping with O 2 microsensors to investigate the spatial heterogeneity of the diffusive boundary layer (DBL) and O 2 flux around single and multiple tufts of hyaline hairs on the thallus of Fucus vesiculosus. Flow was a major determinant of DBL thickness, where higher flow decreased DBL thickness and increased O 2 flux between the algal thallus and the surrounding seawater. However, the to

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2

Jóźwiak, Małgorzata Anna. "ECTOHYDRICITY OF LICHENS AND ROLE OF CORTEX LAYER IN ACCUMULATION OF HEAVY METALS." Ecological Chemistry and Engineering S 20, no. 4 (2013): 659–76. http://dx.doi.org/10.2478/eces-2013-0045.

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Abstract Heavy metal and dust pollution absorption through lichen thallus occurs on the surface, that is by means of ectohydric sorption . Protective mechanisms, among which there is heterometric (layered) structure of lichens, play a significant role in limiting this process. The aim of this research was to determine the way the pollution penetrates inside lichen thallus and to determine the role of dermal layer in stopping heavy metals on the thallus surface . Lichen thalli exposed to transport pollution near Krakow-Katowice motorway for half a year were analyzed. With the use of Electron Sc

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3

Samiyarsih, Siti, Moch Iqbal Sufyan Ats’tsaury, Achmad Ilalqisny Insan, and Nur Fitrianto. "Variasi Karakter Anatomis Talus Padina australis Hauck 1887 (Dictyotales, Phaeophycota) di Pantai Karang Tengah Kabupaten Cilacap." Journal of Marine Research 9, no. 4 (2020): 399–406. http://dx.doi.org/10.14710/jmr.v9i4.28208.

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ABSTRAK: Karakter anatomi dapat digunakan untuk menentukan produktivitas kandungan alginat rumput laut P. australis Hauck. Penelitian ini bertujuan mengetahui variasi karakter anatomis talus Padina australis Hauck. Pengambilan sampel dengan purposive random sampling di pantai Karang Tengah, Kabupaten Cilacap. Persiapan mikroskopis dengan metode parafin dengan safranin 1% dalam alkohol 70%. Parameter yang diamati meliputi ketebalan epidermis, ukuran sel medula, ketebalan talus, dan ukuran tetra sporangia. Pengamatan struktur anatomi secara deskriptif dengan membandingkan karakter anatomi P. aus

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Barbosa, Suzana Bissacot, Silvia Rodrigues Machado, and Marcelo Pinto Marcelli. "Thallus anatomy of Canoparmelia texana (Parmeliaceae, lichenized Ascomycota)." Biota Neotropica 10, no. 3 (2010): 149–54. http://dx.doi.org/10.1590/s1676-06032010000300016.

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Conventional techniques for structural studies under light microscope and scanning electron microscope were employed to describe the histology of thallus in Canoparmelia texana, a lichen with wide distribution in open environments and fairly common in the cerrados and urban areas of Brazil. This study describes a new type of cortical organization for the family Parmeliaceae, in C. texana the upper cortex is lacunar, showing a large quantity of small intercellular spaces or lacunae. The anatomical features including medulla thickness, hyphal orientation pattern, rhizines thickness and crystals

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Alvarez, María Victoria, and Alicia Boraso. "Development morphology of Undaria pinnatifida sporophytes (Phaeophyceae, Alariaceae) in Caleta Cordova (Chubut, Argentina)." Marine and Fishery Sciences (MAFIS) 33, no. 1 (2020): 77–94. http://dx.doi.org/10.47193/mafis.3312020061805.

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Undaria pinnatifida is an invasive brown algae that has been found on the Argentine coast since 1992. This work aims to follow the ontogeny of sporophytes, from egg fecundation to thallus senility, and thereby contribute to information on the development of the species in San Jorge Gulf. Sporophytes obtained in the laboratory were used to study the first stages of development, while samples collected from field population were used to describe advanced stages. Morphological observations were carried out on fronds, stipes, midrib, sporophylls and holdfasts of thalli at different developmental s

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6

Sonina, Anzhella Valerjevna, Vera Ivanovna Androsova, Anna Andreevna Tsunskaya, and Liliya Evgenjevna Suroeva. "Comparative study of structural and ecophysiological features of lichens of different ecological groups in rocky forest communities of northernmost boreal zone (Karelia, Russia)." Czech Polar Reports 8, no. 2 (2018): 186–97. http://dx.doi.org/10.5817/cpr2018-2-15.

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The anatomical (thickness of layers of fungal and algal symbionts) and ecophysiological parameters (the content of photosynthetic pigments) of two lichen species (Hypogymnia physodes and Umbilicaria hyperborea) from rocky forest communities of northernmost boreal zone (North-West of Russia) were studied. H. physodes is a lichen with foliose thallus morphology and circumpolar distribution which colonizes almost every substrate. U. hyperborea is strictly epilithic lichen with umbilicate type of thallus morphology and arcto-alpine distribution. Despite the fact that the photobiont in two species

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7

Markager, Stiig, and Kaj Sand-Jensen. "Implications of thallus thickness for growth-irradiance relationships of marine macroalgae." European Journal of Phycology 31, no. 1 (1996): 79–87. http://dx.doi.org/10.1080/09670269600651231.

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8

Valladares, F., C. Ascaso, and L. G. Sancho. "Intrathalline variability of some structural and physical parameters in the lichen genus Lasallia." Canadian Journal of Botany 72, no. 4 (1994): 415–28. http://dx.doi.org/10.1139/b94-056.

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The intrathalline variability of several physical and anatomical parameters of two lichens, Lasallia hispanica and Lasallia pustulata within the family Umbilicariaceae, was studied. In each thallus three zones or concentric rings were considered: the central zone, which includes the umbilicus, the intermediate zone, and the marginal zone. The study focussed on the thickness of the thallus and its layers, the increase of surface area and volume with hydration, the sample densities in dry and wet states, several stereological parameters (especially the volume and surface density of both symbiont

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9

Moch. Amin Alamsjah, Agustono, Handini Fidya Riswanti,. "Pengaruh Medium Yang Tercemar Organoklorin (Endosulfan) Terhadap Kandungan Agar Dan Morfologi Thallus Gracilaria verrucosa [Effect Of Organochlorines (Endosulfan) Contaminated Medium On Content Of Gelatin And Thallus Morphology Gracilaria verrucosa]." Jurnal Ilmiah Perikanan dan Kelautan 5, no. 1 (2019): 55. http://dx.doi.org/10.20473/jipk.v5i1.11425.

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Abstract Gracilaria verrucosa seaweed is one of the high economic value because its potential as raw with the good content of more agarose than agaropektin so that it can produce gelatin to form strong and solid gelatin. The content range is from 12-48% depending on the class species Rhodophyceaea. Organochlorine residues (Endosulfan) come down to sea by the use of Organochlorine continuously, finally settles on the ground and carried by the flow of rain. Organochlorine residues (Endosulfan) excess in aquatic may influence biota so that can degrade and change the content that Thallus morpholog

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APTROOT, André, Harrie J. M. SIPMAN, Joel Alejandro MERCADO DIAZ, et al. "Eight new species of Pyrenulaceae from the Neotropics, with a key to 3-septate Pyrgillus species." Lichenologist 50, no. 1 (2018): 77–87. http://dx.doi.org/10.1017/s0024282917000573.

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AbstractEight new species of Pyrenulaceae are described as new to science from Brazil, Guyana and Puerto Rico. Pyrenula sanguineomeandrata Aptroot & Mercado Diaz (with a thallus with red, KOH+ purple pigmentation of lines or a reticulum, simple ascomata with vertical ostioles, a deep red inspersed, KOH+ orange hamathecium, and dark brown 3-septate ascospores 25–29×10–12 μm) and P. sanguineostiolata Aptroot & Mercado Diaz (with a thallus with deeply immersed simple ascomata with vertical ostioles, which are superficial and bright red, and 3-septate ascospores 25–28×9–12 μm) are describe

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11

Sonina, Anzhella V., Anastasya D. Rumjantseva, Anna A. Tsunskaya, and Vera I. Androsova. "Adaptations of epilithic lichens to the microclimate conditions of the White Sea coast." Czech Polar Reports 7, no. 2 (2017): 133–43. http://dx.doi.org/10.5817/cpr2017-2-13.

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Anatomical and functional features of the following three epilithic lichens Umbilicaria torrefacta, Physcia caesia, Physcia dubia were studied. These species have different morphological characteristics of thalli and occupy similar environmental conditions on supralittoral of the White Sea coast. The studied lichens are widespread in the territory of Karelia. U. torrefacta is an obligate epilithic species, Physcia caesia and Physcia dubia colonize both bark of trees and stones. Within the study area, these species were found only on coastal boulders. Photobiont of all studied lichens is unicel

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12

Murúa, Pedro, Frithjof C. Küpper, Liliana A. Muñoz, Miriam Bernard, and Akira F. Peters. "Microspongium alariae in Alaria esculenta: a widely-distributed non-parasitic brown algal endophyte that shows cell modifications within its host." Botanica Marina 61, no. 4 (2018): 343–54. http://dx.doi.org/10.1515/bot-2017-0095.

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Abstract Alaria esculenta is an important kelp species in northern Europe, Atlantic Canada and USA and the Arctic, with high economic potential. Microspongium alariae, a brown algal endophyte using A. esculenta as host, is reported for the first time from Scotland (Great Britain) and Brittany (France), suggesting a wide distribution in NW Europe. The alga was found growing epi-endophytically in A. esculenta stipes and was occasionally associated with warts. Isolated Microspongium thalli grew in host-free cultures and formed plurilocular sporangia in a broad range of temperature and irradiance

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13

TRUONG, Camille, and Philippe CLERC. "Eumitrioid Usnea species (Parmeliaceae, lichenized Ascomycota) in tropical South America and the Galapagos." Lichenologist 45, no. 3 (2013): 383–95. http://dx.doi.org/10.1017/s0024282912000904.

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AbstractEumitrioid Usnea species are characterized by a tubular central axis throughout the entire thallus. Four species were identified in South America: Usnea baileyi is a (sub-) tropical species occurring both in continental South America and the Galapagos; U. perplectata has a scattered distribution worldwide and occurs in continental South America, mainly on the eastern range; U. flaveola and the newly described species U. subflaveola are both so far endemic to the Neotropical Andes. Distinct chemotypes, as well as anatomical characters, such as the thickness ratio of the medulla or the p

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14

Gauslaa, Yngvar, and Darwyn Coxson. "Interspecific and intraspecific variations in water storage in epiphytic old forest foliose lichens." Botany 89, no. 11 (2011): 787–98. http://dx.doi.org/10.1139/b11-070.

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Cyanolichens ( Lobaria hallii , Lobaria retigera , Lobaria scrobiculata , Pseudocyphellaria anomala ) and cephalodial ( Lobaria pulmonaria ) and noncephalodial ( Platismatia glauca ) chlorolichens were sampled in dry open, mesic open, and mesic closed forests in central British Columbia. Specific thallus mass (STM), water-holding capacity (WHC), percent water content at saturation, and thickness of upper cortex, photobiont layer, and medulla plus lower cortex were measured. Whereas STM did not differ much between cyanolichens (9.8 ± 0.1 mg dry mass·cm–2) and chlorolichens (8.0 ± 0.1 mg dry mas

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15

Noer, Iin Supartinah, Betty Mayawatie, Leni Maryani, Jujun Juanda, and Anggit Manganti. "ETNOLICHENOLOGY OF OLD MENS BEARD (Usnea spp) AT PRIANGAN." KnE Life Sciences 2, no. 1 (2015): 300. http://dx.doi.org/10.18502/kls.v2i1.162.

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<p>Usnea has been used for a long time in Indonesia for traditional medicine and crude material for jamu. The study of taxonomy and local knowledge at Priangan are less information. The research was conducted between March 2011–April 2012. The aim of this research was to explore the local knowledge of species Usnea conducted by emic and ethic approaches. The specimens collection was done by survey along the pine forest at Bandung, Sumedang, Garut, Ciamis and Tasikmalaya in Priangan areas. The specimens were analysis morphological, anatomy and chemical. The etnolichenology study was done

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16

Godlewski, Mirosław. "Callose formation in injured cells of the vegetative and generative thallus of Chara vulgaris L. Absence of callose in the process of cytodifferentiation." Acta Societatis Botanicorum Poloniae 57, no. 1 (2014): 21–30. http://dx.doi.org/10.5586/asbp.1988.003.

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In an alga <em>Chara vulgaris</em> L. the processes of differentiation of vegetative system cells of the thallus, and initiation and development of generative organs are not associated with callose formation. It was demonstrated that damage to any of the somatic cells and also generative and nongenerative cells of the antheridium and oogonium are capable of callose formation independently of their developmental stage. The localisation and thickness of these layers depend on the way the cells are injured and on their size. The protective role of callose in such cells may consist, be

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17

Sant, Natàlia, and Enric Ballesteros. "Photosynthetic activity of macroalgae along a bathymetric gradient: interspecific and seasonal variability." Scientia Marina 84, no. 1 (2020): 7. http://dx.doi.org/10.3989/scimar.04995.06a.

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Marine macroalgae are unevenly distributed with depth, with substitutions of the dominant species along the bathymetric gradient. Since light shows a sharp decrease with depth and is a critical factor for algal growth, we hypothesize that species dominating at a certain depth are the best adapted to the light environment reaching that depth. To this end, we selected seven species of Mediterranean macroalgae distributed from 0 to 50 m depth and looked for their photosynthetic performances. Photosynthetic responses showed striking differences, with photosynthetic efficiencies increasing at incre

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18

Valladares, Fernando, and Leopoldo G. Sancho. "Medullary Structure of the Umbilicariaceae." Lichenologist 27, no. 3 (1995): 189–99. http://dx.doi.org/10.1016/s0024-2829(95)80017-4.

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AbstractThe medullary structure of 24 Umbilicariaceae species was studied by light microscopy. The objective was to investigate the variability of the medulla of these lichens and to assess the possible implications for thallus ecophysiology and the taxonomic relevance of the anatomy of this layer. Several methods of embedding, sectioning and staining together with the comparison of radial with transverse sections showed important differences in the degree of cohesion of hyphae and their spatial orientation within the medulla. Other important characteristics were the existence of more than one

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Afrianti, Aisyah, Farah Nabilah, Reysa Sasmaya Wahyadyatmika, et al. "Identification The Content of Lead (Pb), Mercury (Hg), Chlorophyll-a, and Cell Morphology of Seaweed Kappaphycus alvarezii in Bluto and Saronggi Water, Sumenep, Madura, East Java." Journal of Marine and Coastal Science 8, no. 1 (2020): 38. http://dx.doi.org/10.20473/jmcs.v8i1.21145.

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Kappaphycus alvarezii is one of Indonesia's export commodities because it has high economic value as food and industry. One area in East Java which is the center of seaweed cultivation is Sumenep regency such as Saronggi and Bluto. Currently Sumenep Regency is an area for oil and gas exploration and exploitation. Types of pollutants resulting from these activities cause pollution in aquatic environments such as lead (Pb), mercury (Hg) and cadmium (Cd). The heavy metals found in the waters can be absorbed and accumulated in the seaweed thallus. The purpose of this research is to know the heavy

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Hyvärinen, M. "Adaptivity of the thallus structure of Hypogymnia physodes to microclimatic conditions." Lichenologist 24, no. 3 (1992): 267–79. http://dx.doi.org/10.1017/s0024282992000379.

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AbstractThe thallus structure of a common epiphytic lichen Hypogymnia physodes growingon the bark of Pinus sylvestris under a variety of microclimatic conditions was studied by means of fluorescence and scanning electron microscopy. The disparity between the thallus layer thicknesses of specimens growing in different habitats proved to be small though obvious, and differences also appeared in the amount of gelatinous substances in the hyphal cell walls ofthe cortex and algal layer. Furthermore, the occurrence of a pored epicortex of H. physodes at dry sites is reported. The size distribution o

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Yanbei, Yang, Tian Chunhui, and Liu Shuang. "Research on Properties of X-Ray Detection Film Based on Thallium Doped Cesium Iodide." E3S Web of Conferences 252 (2021): 02072. http://dx.doi.org/10.1051/e3sconf/202125202072.

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As X-ray detection imaging has a wide range of applications in medicine, industry, public safety, etc., it is of great significance to study its imaging mechanism and improve its imaging performance. Based on the process of X-ray luminescence in the scintillator material, this paper established a simulation model using a microcrystalline column structure to investigate the relationship between the thickness of the detection film and the light conversion efficiency. With the help of the simulation tool MATLAB, the Monte Carlo method was used to simulate the light conversion process of X-ray in

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22

Saglam, Ugur, Sahin Yakut, Binnur Karabak, and Deniz Bozoglu. "Thickness dependence of AC conductivity in TlSe thin films." Canadian Journal of Physics 97, no. 11 (2019): 1182–84. http://dx.doi.org/10.1139/cjp-2018-0758.

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Thalium selenide (TlSe), which has a lattice with tetragonal symmetry, is a member of the A3B6 semiconductor group. The structure of TlSe is defined as chains where atoms inside are bonded with an ionic-covalent bond. TlSe thin films were deposited by thermal evaporation under a high vacuum on glass substrates. The structure of TlSe thin films is amorphous with a tetragonal structure. The AC conductivity measurements were operated via the measurements of capacitance and dielectric dissipation (tanδ) at room temperature. AC conductivity values change between 10−11 and 10−6 S/cm at the low-frequ

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23

Zivadinov, R., N. Bergsland, R. Cappellani, et al. "Retinal nerve fiber layer thickness and thalamus pathology in multiple sclerosis patients." European Journal of Neurology 21, no. 8 (2014): 1137—e61. http://dx.doi.org/10.1111/ene.12449.

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Le Helloco, A., D. Pavin, J. L. Albérini, P. Bourguet, C. Almange, and J. C. Daubert. "Septal thickness and thallium 201 myocardial perfusion in paced patients with hypertrophic cardiomyopathy." EP Europace 2, Supplement_1 (2001): A11. http://dx.doi.org/10.1016/eupace/2.supplement_1.a11-c.

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Gunas, I. V., L. V. Babych, O. I. Kovalchuk, E. V. Cherkasov, and F. V. Shayuk. "REGRESSION MODELS OF THALAMUS DIMENSIONS IN BOYS AND GIRLS OF DIFFERENT CRANIOTYPES." Ukrainian Scientific Medical Youth Journal, no. 1(99) (March 31, 2017): 5–9. http://dx.doi.org/10.32345/usmyj.1(99)().2017.5-9.

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In 82 practically healthy urban youths and 86 girls of the Podillia region of Ukraine, when distributed into different craniotypes, reliable regression models of computational-tomographic dimensions of thalamus were constructed depending on anthropometric and somatotypological parameters with a determination coefficient greater than 0.6. In mesocephalic boys, of 4 possible models, 3 were constructed with a determination coefficient from 0.731 to 0.938; and in brachycephals boys only 1 model (the determination coefficient is 0.620). In girls-dolichocephals and brachycephals all 4 models have be

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26

Gottwald, Helmut, and Konrad G. Weil. "Properties of Cold Condensed Metal Chlorideand of Cocondensed Metal/Metal Chloride Films II. Raman Spectra." Zeitschrift für Naturforschung A 43, no. 5 (1988): 481–84. http://dx.doi.org/10.1515/zna-1988-0513.

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We report on Raman spectroscopic investigations with cold condensed films of silver chloride, thallium chloride, and sodium chloride in the absence and in the presence of cocondensed metal. With films of 1000 nm -2000 nm thickness, Raman signals only can be seen if small silver particles are present. These are either cocondensed particles or they are formed by photolysis of silver chloride. At low temperatures, noncrystalline films can absorb light from the exciting laser, while at room temperature also crystalline silver chloride can be photolyzed by the argon ion laser.The signals are interp

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27

Burn, S., P. Gibbs, S. Steel, S. Howey, A. Nicholson, and J. L. Caplin. "Quantitative thallium uptake at rest and left ventricular wall thicknes by MRI." Nuclear Medicine Communications 16, no. 11 (1995): 969. http://dx.doi.org/10.1097/00006231-199511000-00016.

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LEHELLOCO, A., D. PAVIN, J. ALBERINI, P. BOURGUET, C. ALMANGE, and J. DAUBERT. "13.9 Septal thickness and thallium 201 myocardial perfusion in paced patients with hypertrophic cardiomyopathy." Journal of Nuclear Cardiology 8, no. 1 (2001): S80. http://dx.doi.org/10.1016/s1071-3581(01)80724-8.

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Donjuan-Medrano, Ana-Laura, and Antonio Montes-Rojas. "Effect of the thickness of thallium deposits on the values of EQCM sensitivity constant." New Journal of Chemistry 32, no. 11 (2008): 1935. http://dx.doi.org/10.1039/b808802k.

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Sergott, Robert C., Annaswamy Raji, James Kost, et al. "Retinal Optical Coherence Tomography Metrics Are Unchanged in Verubecestat Alzheimer’s Disease Clinical Trial but Correlate with Baseline Regional Brain Atrophy." Journal of Alzheimer's Disease 79, no. 1 (2021): 275–87. http://dx.doi.org/10.3233/jad-200735.

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Background: We performed exploratory analyses of retinal thickness data from a clinical trial of the AβPP cleaving enzyme (BACE) inhibitor verubecestat in patients with Alzheimer’s disease (AD). Objective: To evaluate: 1) possible retinal thickness changes following BACE inhibition; and 2) possible association between retinal thickness and brain atrophy. Methods: Retinal thickness was measured using spectral-domain optical coherence tomography in a 78-week randomized placebo-controlled trial of verubecestat in 1,785 patients with mild-to-moderate AD. Changes from baseline in retinal pigment ep

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Guerfi, Tarek, S. Beauquis, P. Galez, and M. F. Mosbah. "Thallium Based Superconducting Thin Films Synthesized by RF-Sputtering and Ex Situ Thallination." Materials Science Forum 609 (January 2009): 173–78. http://dx.doi.org/10.4028/www.scientific.net/msf.609.173.

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Thallium based superconducting thin films of TlBa2CaCu2O7 (Tl-1212), Tl2Ba2CaCu2O8 (Tl-2212) and Tl2Ba2Ca2Cu3O10 (Tl-2223) of about 100-125 nm in thickness have been prepared on (001) LaAlO3 single crystal substrate using rf-sputtering deposition of Ba2Ca2Cu3O7 precursor films and ex-situ thallination in sealed quartz tube under different atmospheres (oxygen, argon and nitrogen). We have studied phases formation as function of partial pressure of Tl2O which may be adjusted by varying thallium source content TlxBa2Ca2Cu3Oz (x = 1.5, 1.6, 1.7, 1.8, 1.9, 2.0) and atmosphere pressure at ambient te

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Frye, Brett, Suzanne Craft, Thomas Register, et al. "Mediterranean versus Western diet effects on cerebral cortical thickness and volume in cynomolgus monkeys." Innovation in Aging 4, Supplement_1 (2020): 489–90. http://dx.doi.org/10.1093/geroni/igaa057.1583.

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Abstract Diet may influence the risk for cognitive decline and neurodegenerative disorders, including Alzheimer’s disease (AD), but these relationships are difficult to study in humans. Cynomolgus macaques (Macaca fascicularis) are appropriate models for investigations of diet effects on the brain because, like humans, they are omnivorous, have complex central nervous systems, are susceptible to diet-induced diseases, and accumulate amyloid and tauopathies with age. Using structural magnetic resonance imaging, we examined diet effects on brain anatomy by measuring thickness and volume of sever

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Phillips, Richard J., Michael J. Shane, and Jay A. Switzer. "Electrochemical and photoelectrochemical deposition of thallium(III) oxide thin films." Journal of Materials Research 4, no. 4 (1989): 923–29. http://dx.doi.org/10.1557/jmr.1989.0923.

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Thallium (III) oxide is a degenerate n-type semiconductor with high optical transparency and electrical conductivity. Films of thallium(III) oxide can be electrochemically deposited onto conducting and p-type semiconducting substrates, and photoelectrochemically deposited onto n-type semiconducting substrates. Films deposited at currents below the mass transport limit onto platinum or stainless steel were columnar, and the current efficiency on stainless steel was 103 ±2%. Dendritic films were deposited at mass-transport-limited currents. Films were deposited with thicknesses ranging from 0.1

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Calabrese, Massimiliano, Francesca Rinaldi, Paola Grossi, et al. "Basal ganglia and frontal/parietal cortical atrophy is associated with fatigue in relapsing—remitting multiple sclerosis." Multiple Sclerosis Journal 16, no. 10 (2010): 1220–28. http://dx.doi.org/10.1177/1352458510376405.

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Background: Fatigue is one of the most frequent symptoms suffered by patients affected by multiple sclerosis. The patho-physiological basis of multiple sclerosis-related fatigue remains to be elucidated. Objective: Our aim was to investigate whether a particular pattern of deep and/or cortical grey matter atrophy is associated with fatigue in patients with multiple sclerosis. Methods: A total of 152 patients with relapsing—remitting multiple sclerosis were evaluated with the Expanded Disability Status Scale, the Fatigue Severity Status Scale (FSS), the Modified Fatigue Impact Scale and the Bec

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Petracca, Maria, Christian Cordano, Maria Cellerino, et al. "Retinal degeneration in primary-progressive multiple sclerosis: A role for cortical lesions?" Multiple Sclerosis Journal 23, no. 1 (2016): 43–50. http://dx.doi.org/10.1177/1352458516637679.

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Background: Retinal atrophy in multiple sclerosis (MS) is secondary to optic nerve focal inflammation and to injury of the posterior visual pathway. Objectives: To investigate the contribution of cortical lesions (CLs) to retinal pathology in primary-progressive multiple sclerosis (PPMS). Methods: We performed a cross-sectional evaluation of 25 patients and 20 controls, relating magnetic resonance imaging (MRI) metrics of visual pathway integrity with parameters derived from spectral-domain optical coherence tomography (peripapillary retinal nerve fiber layer (RNFL) thickness, ganglion cell +

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Liu, Na, Xin Tong, Wanjie Huang, Jianhua Fu, and Xindong Xue. "Synaptic Injury in the Thalamus Accompanies White Matter Injury in Hypoxia/Ischemia-Mediated Brain Injury in Neonatal Rats." BioMed Research International 2019 (October 9, 2019): 1–10. http://dx.doi.org/10.1155/2019/5249675.

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The broad spectrum of disabilities caused by white matter injury (WMI) cannot be explained simply by hypomyelination. Synaptic injury in the thalamus may be related to disabilities in WMI survivors. Neuronal injury in the thalamus has been found most commonly in autopsy cases of preterm WMI. We hypothesized that hypoxia/ischemia (HI) in neonatal rats results in synaptic abnormalities in the thalamus that contribute to disabilities in WMI survivors. We examined changes in synapses in a neonatal rat model of HI-induced WMI. Right common carotid artery ligation and hypoxia (8% oxygen for 2.5 hour

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Mercado, Rodrigo, Tomasz Mandat, G. R. Wayne Moore, David Li, Alex MacKay, and Christopher R. Honey. "Three-tesla magnetic resonance imaging of the ventrolateral thalamus: a correlative anatomical description." Journal of Neurosurgery 105, no. 2 (2006): 279–83. http://dx.doi.org/10.3171/jns.2006.105.2.279.

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Object Surgery for tremor targets the ventrolateral nuclei of the thalamus. An initial radiological estimation of this target can be further refined through intraoperative physiological confirmation. Direct visualization of these nuclei has not yet been described. The improved signal-to-noise ratio associated with 3-tesla (3T) magnetic resonance (MR) imaging makes increased spatial resolution possible, which may aid in the identification of subtle morphological features. This study was conducted to describe the anatomy of the nuclei and fiber projections within the ventral thalamus by using 3T

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Beneyton, R., B. Canut, P. Regreny, M. Gendry, G. Grenet, and G. Hollinger. "Thallium incorporation into GaAs(001) grown by solid source MBE: critical thickness and stability under annealing." Journal of Crystal Growth 275, no. 1-2 (2005): e1171-e1175. http://dx.doi.org/10.1016/j.jcrysgro.2004.11.206.

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Held, Friederike, Alan W. J. Morris, Daniel Pirici та ін. "Vascular basement membrane alterations and β-amyloid accumulations in an animal model of cerebral small vessel disease". Clinical Science 131, № 10 (2017): 1001–13. http://dx.doi.org/10.1042/cs20170004.

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Non-amyloid cerebral small vessel disease (CSVD) and cerebral amyloid angiopathy (CAA) may be interrelated through the damaged basement membranes (BMs) and extracellular matrix changes of small vessels, resulting in a failure of β-amyloid (Aβ) transport and degradation. We analyzed BM changes and the pattern of deposition of Aβ in the walls of blood vessels in spontaneously hypertensive stroke-prone rats (SHRSP), a non-transgenic CSVD model. In 45 SHRSP and 38 Wistar rats aged 18 to 32 weeks: (i) the percentage area immunostained for vascular collagen IV and laminin was quantified; (ii) the ca

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ABD EL-RAHEEM, M. M. "OPTICAL PROPERTIES OF AsSeTl THIN FILMS DEPOSITED BY e-BEAM EVAPORATION TECHNIQUE." Surface Review and Letters 18, no. 01n02 (2011): 71–75. http://dx.doi.org/10.1142/s0218625x11014394.

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Five compositions of the system As 25 Se 75-x Tl x (x = 12, 16, 20, 24 and 28%) have been prepared using melt quench technique. Thin films of the same thickness (200 nm) were deposited by electron beam evaporation technique. Optical and other parameters of the films have been studied. The optical band gap E op found to decrease by increasing the coordination number r and average number of bonds per atom N av and by decreasing the heat of atomization H s . Other parameters as an oscillator energy E o , dispersion energy E d and plasma frequency ω p found to be affected by changing thallium cont

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Um, Yoo Hyun, Sheng-Min Wang, Nak-Young Kim, et al. "Effects of Moderate Intensity Exercise on the Cortical Thickness and Subcortical Volumes of Preclinical Alzheimer’s Disease Patients: A Pilot Study." Psychiatry Investigation 17, no. 6 (2020): 613–19. http://dx.doi.org/10.30773/pi.2020.0214.

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Objective We aimed to explore the impact of moderate intensity exercise on the cortical thickness and subcortical volumes of preclinical Alzheimer’s disease (AD) patients.Methods Sixty-three preclinical AD patients with magnetic resonance imaging (MRI) and 18-florbetaben positron emission tomography (PET) data were enrolled in the study. Information on demographic characteristics, cognitive battery scores, self-reported exercise habits were attained. Structural magnetic resonance images were analyzed and processed using Freesurfer v6.0.Results Compared to Exercise group, Non-Exercise group dem

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Burn, S., P. Gibbs, S. Steel, S. Howey, A. Nicholson, and JL Caplin. "Comparison of Left Ventricular Wall Thickness and Thallium-201 Uptake at Rest in Patients with Coronary Artery Disease." Clinical Science 90, s34 (1996): 30P. http://dx.doi.org/10.1042/cs090030p.

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Andreassen, O. "Cortical and Sub–cortical Volumetric Abnormalities in Bipolar Disorder." European Psychiatry 41, S1 (2017): S44. http://dx.doi.org/10.1016/j.eurpsy.2017.01.195.

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Previous MRI studies of bipolar disorder (BD) are often limited by small sample sizes and heterogeneity exists with regard to neuroimaging markers. To address these limitations, the ENIGMA Bipolar Disorder Working Group collected the largest BD neuroimaging data set ever studied (n = 6,500). Here, we review findings from sub–cortical volume and cortical thickness and area analyses.ENIGMA harmonized analysis methods were applied to 28 international pooled study samples of MRI data and involved sub–cortical and cortical imaging analyses. We assessed differences between BD and healthy controls (H

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Larcher, W., and V. Vareschi. "Variation in Morphology and Functional Traits of Dictyonema Glabratum From Contrasting Habitats in the Venezuelan Andes." Lichenologist 20, no. 3 (1988): 269–77. http://dx.doi.org/10.1017/s0024282988000301.

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AbstractSpecimens of Dictyonema glabratum from various elevations in the Venezuelan Andes show clear differences in morphology. Optimal development of thalli is attained in the lower Paramo at 3500–3600 m; at the upper altitudinal limit of distribution at about 4300 m only poorly developed thalli are found; in the montane forest zone at about 1700 m the thalli attain about half the average surface area and two thirds of the thickness of those in the optimal habitat. The histological structure of the thalli also shows significant differences. The relative volumes of photobiont to mycobiont, as

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Ilmira, Gazizova, Bogdan Andrey, Khomenko Yulia, Gromova Elena, Zainullina Svetlana, and Gadzhiev Abdulla. "Neuroimaging Findings in Glaucoma (Proton Magnetic Resonance Spectroscopy Study)." NeuroQuantology 18, no. 10 (2020): 13–21. http://dx.doi.org/10.14704/nq.2020.18.10.nq20227.

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The aim of the research is to determine metabolic changes in brain tissue by magnetic resonance spectroscopy (MRS) for patients who had primary open angle glaucoma (POAG) and to reveal a correlation between morphometric and functional alterations in the optic nerve and retina with basic MRS data. Methods: The study involved 24 patients with a diagnosis of POAG aged 58 to 80 years (mean age 73.2 ± 9.5 years). All patients underwent verification of the diagnosis of POAG, quantitative static perimetry (indexes were evaluated: MD - mean deviation), optical coherence tomography of the retina (asses

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Kurzawski, Jan W., Kyriaki Mikellidou, Maria Concetta Morrone, and Franco Pestilli. "The visual white matter connecting human area prostriata and the thalamus is retinotopically organized." Brain Structure and Function 225, no. 6 (2020): 1839–53. http://dx.doi.org/10.1007/s00429-020-02096-5.

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Abstract The human visual system is capable of processing visual information from fovea to the far peripheral visual field. Recent fMRI studies have shown a full and detailed retinotopic map in area prostriata, located ventro-dorsally and anterior to the calcarine sulcus along the parieto-occipital sulcus with strong preference for peripheral and wide-field stimulation. Here, we report the anatomical pattern of white matter connections between area prostriata and the thalamus encompassing the lateral geniculate nucleus (LGN). To this end, we developed and utilized an automated pipeline compris

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Nelson, Charles, Jane McCrohon, Frederick Khafagi, Stephen Rose, Rodel Leano, and Thomas H. Marwick. "Impact of scar thickness on the assessment of viability using dobutamine echocardiography and thallium single-photon emission computed tomography." Journal of the American College of Cardiology 43, no. 7 (2004): 1248–56. http://dx.doi.org/10.1016/j.jacc.2003.09.062.

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Clausen, Malte, Alden N. Bice, A. Cahid Civelek, Grover M. Hutchins, and Henry N. Wagner. "Circumferential wall thickness measurements of the human left ventricle: Reference data for thallium-201 single-photon emission computed tomography." American Journal of Cardiology 58, no. 9 (1986): 827–31. http://dx.doi.org/10.1016/0002-9149(86)90363-2.

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Kögler, A., H. A. Schmitt, D. Emrich, H. Kreuzer, D. L. Munz, and A. J. Morguet. "Assessment of Myocardial Viability in Persistent Defects on Thallium-201 SPECT after Reinjection Using Gradient-Echo MRI." Nuklearmedizin 35, no. 05 (1996): 146–52. http://dx.doi.org/10.1055/s-0038-1629799.

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SummaryThis prospective study assessed myocardial viability in 30 patients with coronary heart disease and persistent defects despite reinjection on TI-201 single-photon computed tomography (SPECT). In each patient, three observers graded TI-201 uptake in 7 left ventricular wall segments. Gradient-echo magnetic resonance imaging in the region of the persistent defect generated 12 to 16 short axis views representing a cardiac cycle. A total of 120 segments were analyzed. Mean end-diastolic wall thickness and systolic wall thickening (± SD) was 11.5 ± 2.7 mm and 5.8 ± 3.9 mm in 48 segments with

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Duerden, Emma G., M. Mallar Chakravarty, Jason P. Lerch, and Margot J. Taylor. "Sex-Based Differences in Cortical and Subcortical Development in 436 Individuals Aged 4–54 Years." Cerebral Cortex 30, no. 5 (2019): 2854–66. http://dx.doi.org/10.1093/cercor/bhz279.

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Abstract Sex-based differences in brain development have long been established in ex vivo studies. Recent in vivo studies using magnetic resonance imaging (MRI) have offered considerable insight into sex-based variations in brain maturation. However, reports of sex-based differences in cortical volumes and thickness are inconsistent. We examined brain maturation in a cross-sectional, single-site cohort of 436 individuals (201 [46%] males) aged 4–54 years (median = 16 years). Cortical thickness, cortical surface area, subcortical surface area, volumes of the cerebral cortex, white matter (WM),

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