scholarly journals Palynofacies variations in a carbonate ramp system environment (Upper Muschelkalk, NE France)

2003 ◽  
Vol 174 (6) ◽  
pp. 595-601 ◽  
Author(s):  
Bernard Courtinat ◽  
Fabrice Malartre
Keyword(s):  
High Energy ◽  
Nutrient Supply ◽  
Carbonate Ramp ◽  
Particle Sizes ◽  
Southwestern Part ◽  
Palynological Assemblages ◽  
Upper Muschelkalk ◽  
Shallow Subtidal ◽  
The Rich

Abstract This study analyses variations in the size of black woody phytoclast and palynofacies types of shallow subtidal environments evolving to deeper subtidal environments, of latest Illyrdian-latest Fassanian age (Upper Muschelkalk). Some of the results display some discrepancies between elevated particle sizes that were supposedly deposited in a relative proximal source and the rich veryhachid palynofacies that are thought to represent distal marine environments. A case study of the succession in the Héming quarry, located in the Alsace-Lorraine trough (southwestern part of the intracratonic Germanic basin) reveals that : (1) the palynological assemblages are dominated by acritarchs belonging to micrhystridids, disaccate pollen and woody phytoclasts; (2) the abundance of phytoclasts, sporomorphs and marine groups is not correlated with lithologies; (3) the length of the processes of micrhystridids is not a useful parameter in defining palynofacies types. In carbonate ramp environments, many factors could have confused the palynological signals such as high-energy events and the water level on which the nutrient supply depended pro parte. All these factors seem to have been governed by climatic or tectono-eustatic events.

Rheed Studies of a-Axis Oriented DyBa2Cu3O7 Films Grown by All-MBE

1997 ◽  
Vol 502 ◽  
Author(s):  
Ivan Bozovic ◽  
J. N. Eckstein ◽  
Natasha Bozovic ◽  
J. O'Donnell
Keyword(s):  
Phase Transitions ◽  
Secondary Phase ◽  
Atomic Layer ◽  
High Energy ◽  
Layer By Layer ◽  
Growth Modes ◽  
Flow Surface ◽  
Surface Phase Transitions

ABSTRACTReal-time, in-situ surface monitoring by reflection high-energy electron diffraction (RHEED) has been the key enabling component of atomic-layer-by-layer molecular beam epitaxy (ALL-MBE) of complex oxides. RHEED patterns contain information on crystallographic arrangements and long range order on the surface; this can be made quantitative with help of numerical simulations. The dynamics of RHEED patterns and intensities reveal a variety of phenomena such as nucleation and dissolution of secondary-phase precipitates, switching between growth modes (layer-by-layer, step-flow), surface phase transitions (surface reconstruction, roughening, and even phase transitions induced by the electron beam itself), etc. Some of these phenomena are illustrated here, using as a case study our recent growth of atomically smooth a-axis oriented DyBa2Cu3O7 films.

Dehydration and Upgrading of Lignite with Microwave

2013 ◽  
Vol 423-426 ◽  
pp. 667-673 ◽  
Author(s):  
Fan Wen Xin ◽  
Zhi Qiang Xu ◽  
Ya Nan Tu ◽  
Wei Yang ◽  
Xiang Yu Han ◽  
...  
Keyword(s):  
High Capacity ◽  
High Energy ◽  
Particle Sizes ◽  
Moisture Migration ◽  
Drying Characteristics ◽  
Microwave System ◽  
Electron Microscope Analysis ◽  
Eastern Inner Mongolia ◽  
High Energy Consumption ◽  
Unique Mechanism

For solving the problems of high energy consumption and high capacity of water-absorption, microwave dehydration technology of lignite was studied in this paper. A self-developed microwave system was used for the experiment on dehydration of lignite from eastern Inner Mongolia. It was proved that the condition of moisture migration was improved and microwave dehydration had a unique mechanism. By analyzing the effects of microwave powers, coal particle sizes, and lignite qualities on drying characteristics, it was found that the moisture decreased when the microwave power increased. it was found that the higher the power was, the faster the moisture decreased; the smaller the particle size was, the faster the moisture decreased; the less the lignite was, the faster the moisture decreased. Through the scanning electron microscope analysis, it was concluded that microwave had no significant effect on the smooth particles, and the fibrous particles and clusters particles tended to be smooth under the effect of microwave. Therefore, the interface of lignite was relatively stable, and not easy to reabsorb water after microwave.

Logging Optimization and Data Analysis Enabling Bypass Pay Identification and Hydrocarbon Quantification with Advanced Pulsed Neutron Behind Casing

2021 ◽  
Author(s):  
Sviatoslav Iuras ◽  
Samira Ahmad ◽  
Chiara Cavalleri ◽  
Yernur Akashev
Keyword(s):  
Cross Section ◽  
Pore Space ◽  
High Energy ◽  
Elastic Cross Section ◽  
Gas Production ◽  
Donets Basin ◽  
Lithology Identification ◽  
Open Hole ◽  
Pulsed Neutron

Abstract Ukraine ranks the third largest gas reserves in Europe. Gas production is carried out mainly from the Dnieper-Donets Basin (DDB). A gradual decline in reserves is forcing Ukraine to actively search for possible sources to increase reserves by finding bypassed gas intervals in existing wells or exploration of new prospects. This paper describes 3 case studies, where advanced pulsed neutron logging technology has shown exceptional value in gas-bearing layer identification in different scenarios. The logging technology was applied for formation evaluation. The technology is based on the neutron interaction with the minerals and the fluids contained in the pore space. The logging tool combines measurements from multiple detectors and spacing for self-compensated neutron cross-capture section (sigma) and hydrogen index (HI), and the Fast Neutron Cross Section (FNXS) high-energy neutron elastic cross section rock property. Comprehensive capture and inelastic elemental spectroscopy are simultaneously recorded and processed to describe the elemental composition and the matrix properties, reducing the uncertainties related to drilling cuttings analysis, and overall, the petrophysical evaluation combined with other log outputs. The proposed methodology was tested in several wells, both in open hole and behind casing. In the study we present its application in three wells from different fields of the DDB. The log data acquisition and analysis were performed across several sandstone beds and carbonates formation with low porosities (<10%), in various combinations of casing and holes sizes. The results showed the robustness and effectiveness of using the advanced pulsed neutron logging (PNL) technologies in multiple cases: Case Study A: Enabling a standalone cased hole evaluation and highlighting new potential reservoir zones otherwise overlooked due to absence of open hole logs. Case Study B: Finding by-passed hydrocarbon intervals that were missed from log analysis based on conventional open hole logs for current field operator. Case Study C: Identifying gas saturated reservoirs and providing solid lithology identification that previously was questioned from drilling cuttings in an unconventional reservoir.

A case study on parallel HDF5 dataset concatenation for high energy physics data analysis

2021 ◽  
pp. 102877
Author(s):  
Sunwoo Lee ◽  
Kai-yuan Hou ◽  
Kewei Wang ◽  
Saba Sehrish ◽  
Marc Paterno ◽  
...  
Keyword(s):  
Data Analysis ◽  
High Energy Physics ◽  
High Energy ◽  
Energy Physics

Power and Globalization in Africa: Perceptions of Barriers to Fair Economic Development in Kenya

2021 ◽  
Vol 20 (1-2) ◽  
pp. 77-97
Author(s):  
John Bosco Ngendakurio
Keyword(s):  
Economic Development ◽  
World Order ◽  
Global Market ◽  
Language And Culture ◽  
Poor Countries ◽  
Face To Face ◽  
The World ◽  
The Rich ◽  
First World

Abstract This article seeks to reveal the primary barriers to fair economic development based on Kenyans’ perceptions of power and globalization. This search was initially sparked by the seeming disinterest of First World scholars to understand the reasons why poor countries benefit so little from the global market as reflected in a subsequent lack of a wide-ranging existing literature about the subject. The literature suggests that global capitalism is dominated by a powerful small elite, the so-called Transnational Capitalist Class (TCC), but how does this relate to Kenya and Africa in general? We know that the TCC has strong connections to financial capital and wealthy transnational corporations. It also pushes neo-liberalism, which becomes the taken-for-granted everyday language and culture that justifies state policies that result in a further class polarization between the rich and poor. Using Kenya as a case study, this article draws on original qualitative research involving face-to-face interviews with Kenyan residents in different sectors who spoke freely about what they perceive to be Kenya’s place in the world order. My interview results show that, on top of the general lack of economic power in the world order, the main barriers to Africa’s performance are neo-colonial and imperialist practices, poor technology, poor infrastructure, general governance issues, and purchasing power.

CHARMONIUM AND EXOTIC HADRONS AT PANDA

2005 ◽  
Vol 20 (02n03) ◽  
pp. 570-577 ◽  
Author(s):  
KLAUS PETERS
Keyword(s):  
Energy Storage ◽  
International Research ◽  
High Energy ◽  
Internal Target ◽  
Research Facility ◽  
High Quality ◽  
The Rich ◽  
Exotic Hadrons ◽  
New Facility ◽  
High Energy Storage

Recently GSI presented the plans for a major new international research facility, called FAIR. A key feature of this new facility will be the delivery of intense, high-quality secondary beams which embody the production of antiprotons. For the antiproton beams a High Energy Storage Ring (HESR) is comprised. The design luminosity is 2·1032 cm -2 s -1. Experiments will take place at an internal target. The rich spectroscopy program on exotic hadrons with antiproton beams is presented.

Multilingualism, urban change and gentrification in the landscape of a Brussels neighbourhood

Multilingua ◽  
2018 ◽  
Vol 37 (1) ◽  
pp. 25-52 ◽  
Author(s):  
Mieke Vandenbroucke
Keyword(s):  
Inner City ◽  
Urban Landscape ◽  
Urban Change ◽  
Linguistic Change ◽  
Socio Economic Development ◽  
History Of ◽  
The Rich ◽  
Rich History ◽  
Over Time

AbstractThis paper focuses on how different historical stages of socio-economic development in Brussels are played out on the ground over time in one particular inner-city neighbourhood, the Quartier Dansaert. In particular, I document the history of this neighbourhood and how urban change and gentrification have impacted the outlook of multilingualism and the development of multilingual discourses and language hierarchies in its material and semiotic landscape over time. By using the rich history of multilingualism in the Quartier Dansaert as a case-study, I argue in favour of more historically-sensitive and longitudinal approaches to social and, in particular, linguistic change as played out in urban landscape.

Parameters affecting nitrifying biofilm reactors

1994 ◽  
Vol 29 (10-11) ◽  
pp. 1-11 ◽  
Author(s):  
M. Boller ◽  
W. Gujer ◽  
M. Tschui
Keyword(s):  
High Energy ◽  
Experimental Investigations ◽  
Operational Parameters ◽  
Oxygen Utilization ◽  
Trickling Filters ◽  
Biofilm Reactors ◽  
Biomass Activity ◽  
Rotating Biological Contactors ◽  
High Energy Consumption

The variables affecting nitrification in biofilms are identified on a theoretical basis. The influence of various design and operational parameters which affect the resulting substance fluxes into and out of the biofilm and the biomass activity regarding nitrification are illustrated with the help of experimental investigations with plastic media trickling filters, rotating biological contactors and different aerated biofilters. The results of experiments with these systems in tertiary nitrification applications reveal process limitations and technical measures to enhance nitrification performance in each system. In a case study, a comparison between the different biofilm processes and activated sludge alternatives showed that biofilm systems may lead to remarkably smaller reactor volumes, but high energy consumption due to unfavorable oxygen utilization.

scholarly journals Migration and Rural Differentiation: Evidence from a Vietnamese Village

2019 ◽  
Vol 15 (6) ◽  
pp. 106
Author(s):  
Thi Minh Khue Nguyen ◽  
Thi Dien Nguyen ◽  
Thi Minh Hop Ho ◽  
Philippe Burny ◽  
Thomas Dogot ◽  
...  
Keyword(s):  
Rural Areas ◽  
Urban Areas ◽  
Social Differentiation ◽  
Cash Income ◽  
Positive Contribution ◽  
Diversification Strategy ◽  
Circular Pattern ◽  
The Rich ◽  
Industrial Zones

This paper explores the links between migration and social differentiation in rural Vietnam after the reform period (2005–2015) through a case study of Maithon village, Chilang District, Bacninh Province. Since 2005, many villagers have left Maithon to work in cities, industrial zones or to find employment abroad. The migration process has transformed labour and income structures and supply in many households. However, 90 percent of Maithon households claimed on the positive contribution of remittance, while at the same time, they did not suffer from labour shortage due to the circular pattern of the migration. Therefore, rural out-migration is one of the diversification strategy which enables the villager to gain access to cash income in urban areas while still keep position in rural areas. It has resulted in the increase in the size of the middle class, rather than the generation of the gap between the rich and the poor. Through this process, migration becomes a developmental strategy, as a means for upward mobility rather than mechanism of social differentiation.

scholarly journals Evaluation of harvesting technology of vineyard pruning based on a Mátra wine region case study

2014 ◽  
pp. 91-100
Author(s):  
Cecília Gonda
Keyword(s):  
Best Practice ◽  
Nutrient Supply ◽  
Collection System ◽  
Theoretical Possibility ◽  
Additional Energy ◽  
Local Conditions ◽  
Family Household ◽  
Wine Region ◽  
The Cost

Wineyard pruning utilization for energy purpose is not only a theoretical possibility, the machine background has also been developed. Economic- and environmental experimentations has made by specialists and they seek to developed the best practice in logistics suitable for local conditions and they propagate the results for the potential users. Nevertheless, the utilization does not seem to be typical in Hungary and some other wine-grower countries. For example, in Hungary the additional energy from vineyard pruning eventuates – tillage, nutrient supply; – phy+tosanitary, environmental pollution; – energy management and economic questions. In Hungary the most important problem is practice of the vineyard pruning utilization were mentioned by the users is the establishment of collection system and the high logistic costs as Marczinkó (2007) experiences confirm this. As I experienced in practice, the winegrowers are uninterested in utilization. Most of them burn it at the end of the vineyard in many cases without considering of the relevant statutory prohibition. As my own several years expriment shows at Mátra wine region it is not the technical background which causes the failure. We can use effectively balers or chippers for collection. The cost of chipping is 14 535–27 000 Ft per hectars with the introduced technologies on Mátra wine region. The cost of 1 GJ of heat production is 606–1125 Ft. We can substitute the fuel with vineyard pruning and it means approximately 115 000 Ft saving for a family household per year.

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