scholarly journals Characteristics of the sediments hosting the Thracian settlement near the town of Letnitsa

2021 ◽  
Vol 82 (3) ◽  
pp. 271-273
Author(s):  
Marlena Yaneva ◽  
Yordanka Donkova ◽  
Lyuben Leshtakov
Keyword(s):  
Mineralogical Composition ◽  
Fine Silt ◽  
Fluvial Terrace ◽  
The Town

The Thracian settlement near the town of Letnitsa is situated on the left fluvial terrace of the Osam River. Hosting sediments are determined as sandy clayey silts, limy in various degrees. Deposits from the western and central parts are compared and both show similar mineralogical composition. These from the central parts contain more fine silt and clayey fraction, which supposes that these parts could have been flooded by the river.

Study of the Characterization of Smectitic Clays from a Town in the State of Paraíba

2015 ◽  
Vol 820 ◽  
pp. 51-55
Author(s):  
I.A. Silva ◽  
I.D.S. Pereira ◽  
W.S. Cavalcanti ◽  
F.K.A. Sousa ◽  
Gelmires Araújo Neves ◽  
...  
Keyword(s):  
Specific Area ◽  
Mineralogical Composition ◽  
Exchange Capacity ◽  
The State ◽  
Chemical Behavior ◽  
X Ray Diffraction ◽  
X Ray ◽  
Technological Improvements ◽  
The Town

The State of Paraíba has gained prominence in the production of raw bentonite in Brazil, where a new deposit has been found in the town of Sossego-PB, besides the deposit in the town of Boa Vista-PB. With the raise in the demand, the traditional reserves are depleting after several years of exploration, and this fact may result in a higher dependence on imported clays, thus existing a great interest in the discovery and characterization of new deposits, also guaranteeing technological improvements for the region. So, the objective of this work is to characterize the new deposits of the State of Paraíba, aiming at analyzing the characteristics the prove their classification as smectitic clays. The characterization was made through the analysis of chemical composition by X-ray fluorescence (EDX), X-ray diffraction (XRD), thermogravimetric analysis and thermal differential analyses (TG and DTA), cation-exchange capacity (CEC) and specific area (SA). The results prove that the studied samples presented, in their mineralogical composition, smectite, kaolinite and quartz, besides thermal and chemical behavior typical smectitic clays.

The Urban Geomorphology of Kuala Lumpur

2005 ◽  
Author(s):  
Ian Douglas
Keyword(s):  
Urban Areas ◽  
Peninsular Malaysia ◽  
River Channels ◽  
Kuala Lumpur ◽  
Fluvial Terrace ◽  
Town Centre ◽  
Pass Through ◽  
Complex Foundation ◽  
The City ◽  
The Town

The city of Kuala Lumpur, lying at the junction of the hills of the Main Range (Banjaran Titiwangsa) of Peninsular Malaysia and the coastal plain, has many of the environmental problems that beset the urban areas of Southeast Asia. It has to cope with heavy, intense rainfalls, frequent local nuisance flooding, unstable hillsides, complex foundation conditions, and the impacts of mining and construction activities. The citizens, engineers, and planners of Kuala Lumpur have had to find ingenious solutions in order to live in harmony with their environment. While careful investigation and skilful applications of science and technology has overcome many of the problems, others remain unresolved. The persistent problems arise because the links, and thus responsibilities, associated with changes in one place and impacts elsewhere are not acknowledged and the available understanding of hydrologic and geomorphic systems is not applied. Founded by Kapitan China Yap Ah Loy at the confluence of the Gombak and Klang Rivers in 1857 as a tin-mining settlement (Gullick 1983), Kuala Lumpur quickly outgrew its floodplain and fluvial terrace site to spread onto the adjacent hills. The British resident, Captain Bloomfield Douglas, moved his headquarters to Kuala Lumpur from Klang in 1880 and soon after built his official residence on the hill to the west of the Gombak River, where the prime minister’s residence now stands. So began a tradition of the elite living on the hills which has persisted to the present day. In December 1881 the new township and the surrounding tin mines were hit by floodwaters (Gullick 1983), so establishing the problem of living with fluvial extremes which still besets the city. Virtually every wet season in the first eighty years of Kuala Lumpur’s existence brought some flooding to the town. The river channels became choked with silt carried down from the mines upstream (Gullick 1983). Record rainfall in December 1926 led to a flood 1 m deep in the town centre. After the floods, a new, wider channel, with a double trapezoidal cross-section was built through the town centre. These works enabled a major flood in 1930 to pass through the town without causing any damage (Gullick 1983).

scholarly journals Provenance of Bengal Shelf Sediments: 1. Mineralogy and Geochemistry of Silt

Minerals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 640 ◽  
Author(s):  
Laura Borromeo ◽  
Sergio Andò ◽  
Christian France-Lanord ◽  
Giovanni Coletti ◽  
Annette Hahn ◽  
...  
Keyword(s):  
Grain Size ◽  
Foreland Basin ◽  
Mineralogical Composition ◽  
Optical Microscope ◽  
Heavy Mineral ◽  
Test Case ◽  
Fine Silt ◽  
Geochemical Composition ◽  
Geochemical Parameters ◽  
Shelf Sediments

This article illustrates a multi-technique frontier approach for the provenance study of silt-size sediments. The mineralogical composition of low-density and heavy-mineral fractions of four samples of fine to very coarse silt deposited on the Bengal shelf was analyzed separately for six different grain-size classes by combining grain counting under an optical microscope, Raman spectroscopy, and X-ray diffraction. The geochemical composition was determined on both bulk-sediment samples and on their <5-μm classes. Such a “multiple-window” approach allowed capturing the full mineralogical information contained in each sample, as well as the size-dependent intra-sample variability of all compositional parameters. The comparison between grain-size distributions obtained by different methods highlighted a notable fallacy of laser granulometry, which markedly overestimated the size of the finest mode represented by fine silt and clay. As a test case, we chose to investigate sediments of the Bengal shelf, where detritus is fed from the Meghna estuary, formed by the joint Ganga and Brahmaputra Rivers and representing the largest single entry point of sediment in the world’s oceans. The studied samples show the typical fingerprint of orogenic detritus produced by focused erosion of collision orogens. Bengal shelf silt is characterized by a feldspatho-quartzose (F-Q) composition with a Q/F ratio decreasing from 3.0 to 1.7 with increasing grain size, plagioclase prevailing over K-feldspar, and rich transparent-heavy-mineral assemblages including mainly amphibole with epidote, and minor garnet and pyroxene. Such a detrital signature compares very closely with Brahmaputra suspended load, but mineralogical and geochemical parameters, including the anomalous decrease of the Q/F ratio with increasing grain size, consistently indicate more significant Ganga contribution for cohesive fine silt. The accurate quantitative characterization of different size fractions of Bengal shelf sediments represents an essential step to allow comparison of compositional signatures characterizing different segments of this huge source-to-sink system, from fluvial and deltaic sediments of the Himalayan foreland basin and Bengal shelf to the Bengal Fan.

Applications of SEM/EDXA in cement clinker investigation

1990 ◽  
Vol 48 (4) ◽  
pp. 870-871
Author(s):  
Arezki Tagnit-Hamou ◽  
Shondeep L. Sarkar
Keyword(s):  
Mineralogical Composition ◽  
Physicochemical Characteristics ◽  
Cement Clinker ◽  
Accurate Information ◽  
Phase Identification ◽  
History Of ◽  
Bulk Chemical ◽  
Resolution Imaging ◽  
Proven Method ◽  
Instantaneous Chemical

All the desired properties of cement primarily depend on the physicochemical characteristics of clinker from which the cement is produced. The mineralogical composition of the clinker forms the most important parameter influencing these properties.Optical microscopy provides reasonably accurate information pertaining to the thermal history of the clinker, while XRDA still remains the proven method of phase identification, and bulk chemical composition of the clinker can be readily obtained from XRFA. Nevertheless, all these microanalytical techniques are somewhat limited in their applications, and SEM/EDXA combination fills this gap uniquely by virtue of its high resolution imaging capability and possibility of instantaneous chemical analysis of individual phases.Inhomogeneities and impurities in the raw meal, influence of kiln conditions such as sintering and cooling rate being directly related to the microstructure can be effectively determined by SEM/EDXA. In addition, several physical characteristics of cement, such as rhcology, grindability and hydraulicity also depend on the clinker microstructure.

Stanislaw Sreniowski, From a Book of Madness And Atrocity

2008 ◽  
pp. 312-316
Author(s):  
Jacek Leociak
Keyword(s):  
Common Fate ◽  
Normal Life ◽  
The Holocaust ◽  
First Time ◽  
The Town

The title of this text, From the Book of Madness and Atrocity, published here for the first time, indicates its generic and stylistic specificity, its fragmentary, incomplete character. It suggests that this text is part of a greater whole, still incomplete, or one that cannot be grasped. In this sense Śreniowski refers to the topos of inexpressibility of the Holocaust experience. The text is reflective in character, full of metaphor, and its modernist style does not shun pathos. Thus we have here meditations emanating a poetic aura, not a report or an account of events. The author emphasises the desperate loneliness of the dying, their solitude, the incommensurability of the ghetto experience and that of the occupation, and the lack of a common fate of the Jews and the Poles (“A Deserted Town in a Living Capital”; “A Town within a Town”; “And the Capital? A Capital, in which the town of a death is dying . . . ? Well, the Capital is living a normal life. Under the occupation, indeed . . . .”).

Interactive acculturation of Turkish-Belgian parents and children in Flanders: A case study of Beringen

2019 ◽  
Vol 16 (3) ◽  
pp. 417-428
Author(s):  
Özgün Ünver ◽  
Ides Nicaise
Keyword(s):  
Early Childhood ◽  
Maternal Employment ◽  
Domain Specificity ◽  
Specific Context ◽  
Childhood Education ◽  
Parents And Children ◽  
Education And Care ◽  
The Relationship ◽  
The Town

This article tackles the relationship between Turkish-Belgian families with the Flemish society, within the specific context of their experiences with early childhood education and care (ECEC) system in Flanders. Our findings are based on a focus group with mothers in the town of Beringen. The intercultural dimension of the relationships between these families and ECEC services is discussed using the Interactive Acculturation Model (IAM). The acculturation patterns are discussed under three main headlines: language acquisition, social interaction and maternal employment. Within the context of IAM, our findings point to some degree of separationism of Turkish-Belgian families, while they perceive the Flemish majority to have an assimilationist attitude. This combination suggests a conflictual type of interaction. However, both parties also display some traits of integrationism, which points to the domain-specificity of interactive acculturation.

‘THE TOWN, THE TOWN, GOOD PIT, HAS ASSES EARS!’: Unstable Audiences in Della Cruscan Poetic Conversation

Romanticism ◽  
2020 ◽  
Vol 26 (3) ◽  
pp. 235-244
Author(s):  
Katie Holdway
Keyword(s):  
Political Instability ◽  
Mass Audience ◽  
The Town

In his famously disparaging poetic retorts to the poetry of the British Della Cruscan movement, the Baviad and Mæviad, Tory satirist William Gifford made every effort to separate the readers of Della Cruscan poetry into two distinct audiences: Della Cruscan ‘writer-readers’ who read and actively responded to pieces written by other members of the coterie with poetry of their own, and the non-participating mass audience. According to Gifford, this latter audience – metonymized as ‘the Town’ in the Baviad – ignorantly follows the whims of fashion, absorbing Della Cruscan poetry, but never actually responding to it. Through an analysis of both Della Cruscan poetry and Gifford's retorts, this essay aims to re-establish the links between these two kinds of audiences. I will argue that Gifford's attempts to suppress these links stemmed from a deep-seated fear – fuelled by post-Revolutionary political instability – that the Della Cruscan coterie offered a platform whereby members of the mass reading audience could join their poetic conversations pseudonymously, and ultimately be granted a voice, regardless of their gender or political affiliations.

“An Unquestionable Source?”

2013 ◽  
Vol 68 (2) ◽  
pp. 145-179
Author(s):  
John Cyril Barton
Keyword(s):  
South America ◽  
Source Material ◽  
Travel Narrative ◽  
Old World ◽  
Spanish Inquisition ◽  
Moby Dick ◽  
Confidence Man ◽  
Benito Cereno ◽  
The Town ◽  
Parallel Action

This essay is the first to examine Melville’s “The Town-Ho’s Story” (Chapter 54 of Moby-Dick [1851]) in relation to W. B. Stevenson’s then-popular-but-now-forgotten British travel narrative, Twenty Years’ Residence in South America (1825). Drawing from suggestive circumstances and parallel action unfolding in each, I make a case for the English sailor’s encounter with the Spanish Inquisition in Lima as important source material for the Limanian setting that frames Melville’s tale. In bringing to light a new source for Moby-Dick, I argue that Melville refracts Stevenson’s actual encounter with the Inquisition in Lima to produce a symbolic, mock confrontation with Old-World authority represented in the inquisitorial Dons and the overall context of the story. Thus, the purpose of the essay is twofold: first, to recover an elusive source for understanding the allusive framework of “The Town-Ho’s Story,” a setting that has perplexed some of Melville’s best critics; and second, to illuminate Melville’s use of Lima and the Inquisition as tropes crucial for understanding a larger symbolic confrontation between the modern citizen (or subject) and despotic authority that plays out not only in Moby-Dick but also in other works such as Mardi (1849), White-Jacket (1850), “Benito Cereno” (1855), Clarel (1876), and The Confidence-Man (1857), wherein the last of which the author wrote on the frontispiece of a personal copy, “Dedicated to Victims of Auto da Fe.”

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