Academic literature on the topic 'DESERTICAS'
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Journal articles on the topic "DESERTICAS":
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Guerrero Rodriguez, Eugenio, and Pilar Rojas Villanueva. "Abejas silvestres en el sur de Coahuila y su preferencia por plantas deserticas." Revista Agraria 1, no. 2 (December 15, 1985): 173–82. http://dx.doi.org/10.59741/agraria.v1i2.353.
Abstract:
En el área de estudio se encontraron 15 especies ae abejas silvestres, mismas que se identificaron a género, siendo las más importantes, de acuerdo a su abundancia y al polen que portaban, 3 especies de Halictus, una de Colletes sp. y una de la tribu Hemisiini. A excepción de algunas de las abejas de las especies 2 y 3 de Halictus que colectaron polen ae Yucca filifera, el resto de las especies prefirieron pecorear en flores de compuestas y ae Larrea tridentata. La actividad más fuerte de estas abejas, en general, fue entre las 11 a.m. y 4 p.m. No se considera que algunas de las especies estuaiauas pudieran actuar como substituto del polinizador Tegeticula yucasella en Y. filifera.
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Kolak Bošnjak, Arijana. "Desertions in 1848/49." Povijesni prilozi 55 (December 2018): 231–50. http://dx.doi.org/10.22586/pp.v55i0.61.
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Jarno, Witold. "„Wbrew przysiędze” – dezercje w Wojsku Polskim w latach 1944–1947." Studia Historica Gedanensia 12, no. 1 (2021): 397–424. http://dx.doi.org/10.4467/23916001hg.21.042.15102.
Abstract:
[„Against the oath” – desertions in the Polish Army in 1944–1947] This article discusses the phenomenon of desertions in the Polish Army in the years 1944–1947. At that time it was a serious problem among soldiers, as the number of deserters can be estimated at around 30,000 people during this period. Of course, many factors influenced on the discipline and morale of the army, including political, economic, social or family conditions. The article describes the causes of desertion, its scale and trend of the phenomenon in the discussed period. The text also presents examples of so‑called collective desertions and actions taken by the communist authorities to limit this phenomenon in the army. With time, discipline began to improve and the number of desertions decreased. However, it was a process lasting several years.
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JACOBS, HANS-JOACHIM. "A review of Dinetus Panzer, 1806 with descriptions of five new species and keys to world species (Hymenoptera, Crabronidae)." Zootaxa 5061, no. 1 (November 3, 2021): 69–94. http://dx.doi.org/10.11646/zootaxa.5061.1.3.
Abstract:
A review of all known species of Dinetus Panzer, 1806 is given. Five species are described for the first time: D. arabicus sp. nov., D. deserticus sp. nov., D. jordanicus sp. nov., D. schmideggeri sp. nov. and D. vanharteni sp. nov. Separate keys for males and females of all known species are provided. The females of D. arabicus sp. nov. and D. schmideggeri sp. nov. and the males of D. cereolus Morice, 1897, D. deserticus sp. nov., D. hameri Notton, 2020, D. rakhimovi Mokrousov & Khedher, 2020, D. politus Turner, 1917 and D. vanharteni sp. nov. are unknown. With this, the total number of species increases to 21. Detailed distribution data of all examined species are presented, except the widely distributed D. pictus.
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Kasprzycki, Remigiusz. "Plamy na honorze." Studia Historyczne 62, no. 3 (247) (March 18, 2022): 63–75. http://dx.doi.org/10.12797/sh.62.2019.03.03.
Abstract:
HONOR DISGRACED: PRE-WORLD WAR II DESERTIONS OF POLISH ARMY OFFICERS
During the Interwar period, desertions plagued the Polish Army. Many officers were counted among the thousands of rank-and-file soldiers who deserted prior to 1939. The desertion of officers was the most shocking of all peacetime abandonments, as they were supposed to be patriotic leaders of the men under their command. Officers deserted for myriad reasons, including fear of prosecution for illicit behavior, such as theft, and the discovery of cooperation or collusion with foreign agents. Of all the officer desertions during this period, the most spectacular took place in 1930 when Major Stanisław Krauss defected to Belgium and France. In 1934, a French court sentenced him to 5 years in prison for spying on French forces for Germany. The trial hit press headlines worldwide.
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Kasprzycki, Remigiusz. "The Illusion of Freedom: Deserters from the Polish Army in Czechoslovakia and from the Czechoslovak Army in Poland before 1939 in the Light of Polish Documents." Przegląd Historyczno-Wojskowy 23, no. 2 (2022): 84–105. http://dx.doi.org/10.32089/wbh.phw.2022.2(280).0004.
Abstract:
Despite the strong interest in Polish-Czechoslovakian relations between 1918‒1939, the subject of desertions during this period from the Polish Army to Czechoslovakia, and vice-versa, has so far not been examined in detail by Polish historians. This article attempts to identify the similarities and differences that existed among deserters from the respective Armies. In addition to presenting the history of these deserters, this study also considers the causes and consequences of these military desertions.
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Heartfield, James. "postmodern desertions capitalism and anti-capitalism." Interventions 5, no. 2 (June 2003): 271–89. http://dx.doi.org/10.1080/1369801031000112996.
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Martínez-Azorín, Mario, Michael Pinter, and Wolfgang Wetschnig. "Desertia, a new genus in Massonieae (Asparagaceae, Scilloideae), including the description of Desertia luteovirens and the taxonomic revisions of Whiteheadia and Namophila." Phytotaxa 221, no. 3 (August 4, 2015): 201. http://dx.doi.org/10.11646/phytotaxa.221.3.1.
Abstract:
Desertia gen. nov., which belongs to tribe Massonieae, is described from south western Namibia and north western South Africa. Desertia is at first sight related to Whiteheadia and Massonia, but it can be clearly differentiated by the papillose bracts, subcampanulate flowers with straight, suberect or slightly spreading free portion of tepals and the rugose seeds. This genus is based on Whiteheadia etesionamibensis, for which the combination in Desertia is presented. Furthermore, a second species in the genus, D. luteovirens, is here described based on distinct morphological and molecular characters. Furthermore, taxonomic revisions are presented for Namophila and Whiteheadia, including identification keys for the three genera and data on morphology, ecology, and distribution for all accepted species.
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Cvrcek, Tomas. "U.S. Marital Disruptions and their Economic and Social Correlates, 1860-1948." Journal of Family History 36, no. 2 (March 9, 2011): 142–58. http://dx.doi.org/10.1177/0363199011398758.
Abstract:
A new estimate of U.S. marital disruptions shows an increase in desertions relative to divorces after 1900. Desertions were the more volatile component of marital disruptions because of their greater responsiveness to general economic conditions. Large marriage cohorts, formed in the years of economic expansion, disrupted in greater numbers: an increase in the marriage rate by 10 per 1,000 unmarried women raised the proportion of disrupted marriages by 7.3 percentage points. Conversely, during years of recession, many poorer couples were discouraged from marriage; smaller marriage cohorts with more resilient marriages were formed and their lifetime marriage disruption rate was lower.
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Ojala, Jari, Jaakko Pehkonen, and Jari Eloranta. "Desertions in nineteenth-century shipping: modelling quit behaviour." European Review of Economic History 17, no. 1 (February 2013): 122–40. http://dx.doi.org/10.1093/ereh/hes016.
Dissertations / Theses on the topic "DESERTICAS":
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Ballani, Giacomo. "Studio ed ottimizzazione di un veicolo trasporto merci per uso desertico." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/6812/.
Abstract:
L'obbiettivo di questa tesi era sviluppare un autocarro ad uso desertico progettato per il trasporto sia di personale che di parti di ricambio per oleodotti.
Durante tutte le fasi di progettazione dovevo tenere conto delle specifiche di progetto assegnate quali le dimensioni, lunghezza di 7 metri e larghezza di circa 4, la capacità di carico, 15000 kg, una velocità massima raggiungibile su pista asfaltata di 200 km/h, avere la sezione del telaio inferiore a V per ridurre il rischio di insabbiamenti e per permettere di guadare piccoli corsi d'acqua che potrebbe incontrare durante la missione ed infine avere le ruote sterzanti sia all'asse anteriore sia su quello posteriore.
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Sangiorgi, Cristian. "Studio ed ottimizzazione di una trasmissione su mezzo ibrido per uso desertico." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7509/.
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Tartari, Giacomo. "Analisi di un evento eccezionale di trasporto di polveri desertiche dal lago Aral al Nord Italia." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/22991/.
Abstract:
Lo scopo della presente tesi è quello di analizzare un evento eccezionale di trasporto di polveri desertiche che ha interessato la regione Emilia-Romagna alla fine di marzo 2020. Il fenomeno ha avuto origine nel deserto dell’Aralkum, formatosi a seguito del prosciugamento del Lago Aral, e rappresenta un avvenimento anomalo se si considera la distanza che il particolato ha percorso e la sua provenienza orientale. L’analisi ha avuto il fine di comprendere l’intensità e la natura del fenomeno, il tragitto compiuto dalle polveri e le condizioni sinottiche che lo hanno causato.
Dopo aver introdotto i concetti generali, si passa a una descrizione dell’area di studio, del contesto storico in cui è avvenuta l’osservazione dell’evento ed infine all’esposizione dei dati raccolti. Nello studio condotto ci si è avvalsi dei dati relativi alla concentrazione di particolato registrata nel periodo dalle stazioni di monitoraggio della qualità dell’aria dell’ente ARPAE, delle osservazioni satellitari compiute dallo spettroradiometro MODIS, degli output modellistici del modello NAAPS e dell’ensemble SDS-WAS e delle mappe di rianalisi NCEP/NCAR dell’agenzia NOAA. I risultati mostrano che l’evento è stato caratterizzato da una concentrazione di particolato elevata tanto da fare misurare valori mai registrati prima in una stazione di tipo rurale. L'evento è stato ricondotto all’immissione in atmosfera di polveri avvenuta nella regione desertica dell’Aralkum. L’analisi sinottica ha dimostrato la presenza di particolari condizioni atmosferiche che hanno permesso l’instaurarsi di un flusso di venti orientali e di intense correnti ascensionali, fattori che hanno giocato un ruolo fondamentale nel verificarsi dell’evento.
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Kone, Alassane. "Modelling and Decision Support for a Desertification Issue Using Cellular Automata Approach." Electronic Thesis or Diss., Guyane, 2023. http://www.theses.fr/2023YANE0001.
Abstract:
La désertification, en tant que problématique majeure affectant la vie sur Terre, a d’énormes conséquences qui dégradent la qualité de vie des hommes, leurs activités quotidiennes et leurs moyens de subsistance. Pour lutter contre son avancée, les organisations internationales ont mis en place des actions pour ralentir ou arrêter son expansion et réduire ses impacts.Cette thèse s’inscrit dans la lutte contre la désertification en modélisant le processus de dégradation des terres conduisant à la désertification. Deux modèles sont développés : le premier combine des automates cellulaires continus et l'évaluation MEDALUS, évaluant la désertification sur la base des indices des facteurs sol, végétation, climat et management. Le deuxième modèle simule la dégradation des terres en utilisant le couple automates cellulaires/Modèle MEDALUS, enrichi par des facteurs anthropiques comme les pratiques d'utilisation des terres, le facteur d'exploitabilité et l’appartenance foncière, formant le Modèle Amélioré de Désertification. Ce modèle sert de base au logiciel DESERTIfication Cellular Automata Software (DESERTICAS), permettant de simuler l'évolution spatio- temporelle de la dégradation des terres. DESERTICAS facilite l'exploration de scénarios de dégradation des terres dans le temps et l'espace.Ces modèles développés intègrent des processus dynamiques dans le modèle MEDALUS à la base statique et permettent d’étendre la notion d’état des automates cellulaires classiques à des états continus. L’identification d’un facteur prédominant permet d’agir sur tout le système conduisant à la désertification. Notre étude met en évidence le management, action humaine, comme facteur prédominant affectant indirectement les autres facteurs. Agir positivement sur le management permet d’interrompre les sources de dégradation, de ralentir ou arrêter la dégradation des terres. La théorie du contrôle est également appliquée au modèle d'automates cellulaires développés et permet d’agir sur le facteur prédominant à partir des algorithmes génétiques. En intégrant des actions de protection des terres dans les simulations liées à la désertification, le logiciel DESERTICAS devient un outil d'aide à la décisionDesertification, as a significant challenge impacting life on Earth, has extensive consequences that degrade human life quality, daily activities, and livelihoods. In response, international organizations have implemented actions to slow or stop its progress and reduce its impacts. This thesis focuses on combating desertification by modelling the process of land degradation leading to desertification. Two models are developed: the first combines continuous Cellular Automata and the MEDALUS assessment, evaluating desertification based on soil, vegetation, climate, and management. The second model simulates land degradation using cellular automata approach, enriched with anthropogenic factors like land use practices, exploitability factor and ownership, forming the Enhanced Model of Desertification. This model serves as the basis for DESERTIfication Cellular Automata Software (DESERTICAS), simulating spatio- temporal land degradation evolution. DESERTICAS facilitates scenario exploration by simulating land degradation progression over time and space. The models incorporate dynamic processes into the MEDALUS model, expanding classical Cellular Automata to continuous states. Identifying a predominant factor influencing desertification, management emerges as crucial, affecting other factors indirectly. Positive management actions can interrupt degradation sources, slowing or halting land degradation. The thesis also applies control theory to the Cellular Automata model, aiming to influence the predominant factor using Genetic Algorithms. By integrating land protection actions into desertification simulations, the DESERTICAS software becomes a decision support tool
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CESARETTI, SABRINA. "Plant co-existence mechanisms related to stress and disturbance intensities in sub-Mediterranean and sub-desertic grassland systems." Doctoral thesis, Università degli Studi di Camerino, 2012. http://hdl.handle.net/11581/401800.
Abstract:
Plant species co-existence may depend upon a complex chain of events involving competitive ability, complementarity and facilitation between plants and numerous interactions with herbivores, pathogens, soil features, fauna and micro-organisms. The co-existence of species in herbaceous vegetation is possible by the presence of factors that limit the expression of the dominance of plants. This limitation may operate through stress or disturbance or by a combination of the two, and its effect is usually to debilitate the potential dominants and to allow plants of smaller stature to regenerate and to co-exist with them. Species co-existence can reflect niche partitioning at several spatial and temporal scales. The functional strategies avoiding the temporal and/or spatial overlapping of the neighbouring individuals are key factors in the niche partitioning inside the plant community, so that species do not exclude each other by competition. Stress and disturbance are the two external factors affecting the vegetation. Their effects on the system change according their intensity. Stress includes factors which restrict the photosynthetic activity. In fact, plant biomass production in vegetation is subjected to a variety of environmental constraints, the most frequent of which are related to shortages and excesses in the supply of solar energy, water, and mineral nutrients. Disturbance includes mechanisms which limit the plant biomass by causing its partial or total destruction (grazing, mowing, forest cutting, soil erosion, and fire). Vegetation composition and species distribution may be influenced by negative processes (competition) and positive interactions (facilitation). Competition shows a maximal intensity in habitats with high productivity and low disturbance, while this phenomenon disappears under conditions of low productivity or intense disturbance. In order to obtain a more complete assessment of the role of these factors upon species density it is necessary to consider the rather different circumstances which arise when the intensities of stress and/or disturbance become severe. In harsh habitats plants are subjected to extreme stress or disturbance conditions, thus seedling establishment is promoted under the canopies of established vegetation. In this positive interaction, known as facilitation, some plants benefit from closely associated neighbours. The intensities of stress and/or disturbance experienced by herbaceous vegetation are sufficient, not only to eliminate potential dominants but also to produce local environments which are inhospitable to all, except a few specialised plants. Facilitation occurs widely but is more frequently documented in unproductive habitats and dominates under harsh conditions. Stress and disturbance involve functional responses by plants; thus, the analysis of plant functional traits (biological characteristics of plants responding to the dominant processes in an ecosystem) is a useful tool for the understanding of plant community assemblage. Grazing is a major disturbance which often causes extensive changes in plant richness and composition. However, pasture plants do not undergo herbivory passively, but react to defend themselves against grazers by means avoidance and tolerance strategies that enable them to survive and grow in grazed systems. Grazing avoidance involves mechanisms that reduce the probability and severity of grazing (mechanical and chemical defence or escape strategy), while grazing tolerance consists of mechanisms that promote growth following defoliation. The research aim was to assess how different types and intensity of disturbance affect species and functional composition of sub-Mediterranean and sub-desertic grassland systems, also in relation with environmental stress. Consequently, the specific research goals were to: i) identify changes in species and functional trait composition and in diversity of plant communities, under different disturbance types (grazing vs. mowing; mown vs. unmown meadows; grazed vs. ungrazed pastures; sheep grazing vs. horse grazing); ii) identify coenological and functional responses of grassland to intensity of stress and intensity and timing of disturbance, by analysing the plant functional traits, that are expression of competitive ability, facilitation, co-existence, avoidance and tolerance strategies; iii) identify plant-plant spatial interactions, i.e. whether species have species-specific spatial associations, especially in harsh environments, and understand how disturbance intensity affect species co-occurrence. Two study areas were considered: sub-Mediterranean grasslands of Umbria-Marches Apennine (central Italy) and the sub-desertic rangelands of southern Peruvian Andes (Peru). In the studied sub-Mediterranean grasslands the competition for light and soil resources may be extremely intense among species. In fact, competition plays a key role, especially in dense and more productive grasslands, where the co-existence of plants is mainly linked to the competitive exclusion. For this reason, in these plant communities the species co-existence is driven by a specific pattern of functional plant traits that ensures foliage expansion affording a competitive advantage. Furthermore, clonal growth forms and vegetative propagation modes that imply horizontal space occupation, can be interpreted as a strategy aimed at maximizing the species competitive ability when there is higher exploitation of soil resources, allowing individuals to explore the neighbouring areas and find unexploited soil niches. This helps to avoid competition for soil resources with the dominant species. Accordingly, the plant functional composition also affects the competitive ability in relation to the stress and the disturbance intensity. In terms of biodiversity conservation, the research outputs represent an advance in the understanding of the ecological processes involved at plant community level, as well as at landscape scale. Some plant traits may reflect selection by herbivores, while others are likely to be by-products of selection for other ecological functions. Moreover, several plant traits may have a dual role. The study findings allow to highlight a general scheme, in which the stress intensity filters the pool of traits at landscape scale, while the disturbance intensity leads to the distribution, occurrence and abundance of single traits at plant community level. Stress intensity (drought stress) selects the trait composition of the plant community at a landscape scale. Thus, traits and associated plant species are distributed at landscape scale depending on stress intensity. In xeric grassland, stress tolerance and avoidance strategies by hairs and leaf texture, determining low evapotranspiration and low palatability, are widespread. Therophyte and chamaephyte life forms are fostered. In semimesic condition either avoidance mechanisms (rosette form, chemical substances, spines and prostrate form) or tolerance strategies (re-growth capacity) occur, as well as late flowering and tall species (upright forbs, tall tussock grasses). More productive environments develop numerous functional types and a higher floristic richness. Disturbance intensity (number of herbivores), type (mowing or grazing, and the different livestock type) and timing act as driving forces in promoting or suppressing the plant functional traits expression. The pool of traits is filtered in different ways by the system. High intensity of disturbance favours avoidance strategies (i.e. prostrate form, rosette forbs, hairs) and vegetative reproduction (clonal ability). The intermediate disturbance condition leads to the largest pool of traits that allows maximum floristic richness. The co-existence of species is promoted by the co-existence of avoidance and tolerance strategies, due to the possibility to use the maximum number of spatial (micro-scale) and temporal niches (change in sward structure during the growing season). In low intensity of disturbance and abandonment conditions, tolerance strategies and dominant species are promoted; on the contrary, the low statured (rosette and prostrate form), accidental and subordinate species are disadvantaged. Large herbivores like horses cause the increase of short grasses, sedges, rosette forbs and annuals (growth forms with poor root systems). These plants do not ensure the maintenance of soil on steep slopes. Upright forbs, dominant unpalatable tall grasses (Brachypodium rupestre) and chamaephyte species are promoted by selective defoliation of small herbivores like sheep. Facilitative interactions between palatable and unpalatable species were observed. Grazing in springtime negatively affects the early spring flowering species of mid/tall dimensions and relevant species such as orchids. This is an issue for biodiversity conservation. The research findings highlight the strong importance of plant–plant spatial interactions in the Peruvian dry Puna. In this harsh environment many species need some kind of facilitative interaction with nurses (mainly with tall grasses, shrubs or cushion plants). Tall grasses (mainly Festuca orthophylla) are the most important nurse species because they have the highest number of spatially associated plants. Thus, the management of this species should be viewed as a key factor for dry Puna biodiversity conservation. In fact, as camelids prefer the fresh, regrown leaves of F. orthophylla that resprout after burning throughout the Peruvian dry Puna, there is the widespread practice of burning these plant communities to renew forage for livestock. Subsequent to burning, shelter and regenerative niches are probably few and small for some years. Because of this, species with strong spatial relationship with F. orthophylla could be threatened with local extinction, especially in conditions of overgrazing. The effects of combined overgrazing and fire lead to the decrease of tall species F. orthophylla and to an increase of the dwarf and spiny shrub Tetraglochin cristatum. The reduction of nurse cover value leads to the decrease of facilitative interactions and consequently to a reduction of species richness. Thus, inappropriate land use practices (e.g. excessive grazing and uncontrolled fire) are the fundamental causes of land degradation. The abundance of tall grasses and shrubs counters soil erosion by wind, and reduction of their cover value could lead to increased soil loss. This could contribute to desertification more than climatic change, or contribute to a cumulative process that amplifies the impact of climatic change. Key words: Avoidance and tolerance strategies, Competition, Facilitation, Plant functional traits, Plant-plant spatial interactions.
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Bertoldi, Luca. "Telerilevamento di rocce granitoidi in ambiente desertico (Anti - Atlante Orientale - Marocco) ed alpino (Himalaya - Nepal Occidentale): elaborazione immagini ASTER e spettroscopia." Doctoral thesis, Università degli studi di Padova, 2011. http://hdl.handle.net/11577/3427505.
Abstract:
The aim of this research is to characterize the spectral signatures of granitoid rocks in visible and infrared wavelengths regions and find effective methodologies to discern and map granitoid plutons using ASTER (Advanced Spaceborne Thermal Emission and Reflectance Radiometer) multispectral satellite images in different environmental contexts. Despite satellite remote sensing analysis has been extensively used for geological mapping, it is not considered readily applicable to the mapping of igneous terrains, where lithological contacts are less predictable. For this reason several plutons in two different geological contexts have been taken into account: i) Anti-Atlas - Morocco Edyacarian and Cryogenian plutons (Eastern Sagrho) and ii) Himalaya - Tertiary plutons (Dolpo).
Particular attention has been given to the pre-processing of the ASTER L1A and L1B images. Level-1B data have been generated performing the radiometric calibration and geometric resampling of Level-1A products. In this way radiance at sensor (W/m2/sr/μm) is obtained from the DN (Digital Number). Subsequently, ASTER images have been corrected for the crosstalk effect, resampled at the same spatial resolution (15m/pixel), georeferenced and orthorectified. Finally, radiance at sensor values have been converted to ground reflectance applying atmospheric correction and, where necessary, the topographic effects on spectra has been reduced performing a topographic normalization.
In order to compare ASTER spectra with the minerals and rocks ones, ASTER Spectral Library version 2.0 (Baldridge et al., 2009) have been considered. This library includes contributions from the Jet Propulsion Laboratory (JPL), Johns Hopkins University (JHU) and the United States Geological Survey (USGS) (Christensen et al., 2000, Clark et al., 1993, 2007). In addition, forty-five samples of granitoid rocks collected in the field, were analyzed in the VIS/SWIR spectral range at the DEI (Department of Information Engineering - Università di Padova) using the VARIAN-CARY5000R spectrophotometer in a wavelength range spanning from 0.35µm to 2.5µm at a 1nm sampling step. High-resolution spectral signatures were resampled simulating the ASTER bands filter. This transformation drastically decrease the discerning capability of spectral signatures since the 2150 laboratory "bands" are reduced to the 9 bands obtained by the ASTER filters in the VIS/SWIR range.
The remote sensing elaboration in Morocco was challenging in discriminating Ediacarian granitoid bodies, that are characterized by very similar compositions and a widespread desert varnish coating. Using false color composites, band ratios, spectral angle mapper (SAM) and supervised maximum-likelihood (MLL) classifications on ASTER bands, we were able to discriminate and map four calc-alkaline plutons. The analytical comparison of ASTER TIR (Thermal Infrared Region) and VNIR/SWIR (Visible Near Infra Red Region, Short Wave Infrared Region) data has demonstrated that the latter are very effective in the distinction of granitoids, although with very similar silica content. This because secondary effects like hydrothermal and surface alterations which may depend respectively on the magmatic evolution and on the texture and modal composition of the plutonic body, can be quite easily recognized.
The remote sensing elaborations in Himalayan case study, point out that detailed lithological discrimination of heavily vegetated and topographically rough areas, requires advanced digital image processing techniques. A good approach consists on masking no -"bedrock" pixels through a classification based filter which excludes water, snow, vegetation and clouds. Subsequently we were able to cluster "rocky" pixel reflectance values into a few end-members, each with a specific mean spectral signature. Indeed, these "rocky" pixels have shown signatures constituted by a non-linear mixing of rocks and lichens. In particular, granitoid rocks of the Higher Himalayan Granitoid form an acid substrate influencing the distribution of acidophilic lichens species which can be diagnostic of such rocks. Consequently, the effect of these lichens on rock spectra along with muscovite absorption bands can be used as a proxy for the presence of leucogranitic rocks in mid latitude alpine environment. The image analysis were carried out on SWIR wavelengths using false color composites of band ratios and PCAs (Principal Component Analysis) studied under the light of this new finding. In this way the image analysis provided the detection and the geological map of a new 110 km2 granitoid body (Buraburi Granite-BG) in the Dolpo region.
Results point out that the pre-processing and processing steps necessary to geological remote sensing application must be chosen in function of the specific scene characteristics (season and the environments). Moreover, has been highlighted the important role of the indirect proxies, such as desert varnish and acidophilic lichens, in the granitoid rocks spectral discrimination, based on satellite signature.La presente ricerca ha lo scopo di sperimentare tecniche di telerilevamento multispettrale atte alla discriminazione e mappatura di plutoni granitici e caratterizzare la risposta spettrale di rocce granitoidi nelle lunghezze d'onda del visibile, vicino e medio infrarosso e infrarosso termico. Nonostante il telerilevamento satellitare sia stato ampiamente applicato alla geologia, le potenzialità del sensore ASTER (Advanced Spaceborne Thermal Emission and Reflectance Radiometer) non sono state mai applicate alla cartografia di corpi granitici. In questo lavoro si sono così presi in considerazione numerosi plutoni in due diversi contesti geologici ed ambientali: i) plutoni di età Ediacariana e Cryogeniana presenti nell'Anti-Atlas Orientale (Sagrho orientale - Marocco) e ii) plutoni Terziari dell'Himalaya meridionale (Dolpo - Nepal occidentale). Nelle analisi delle immagini ASTER si è prestata una particolare attenzione alle fasi di pre-processing, dove si sono applicate le calibrazioni e correzioni radiometriche e geometriche necessarie ad ottenere un dato valido, sia dal punto di vista spettrale che spaziale.. I dati di ASTER di livello 1a, attraverso la calibrazione radiometrica, sono stati così trasformati da DN (Digital Number) in radianza al sensore (W/m2/sr/μm), ottenendo un dato di livello 1b. Questo è quindi stato corrette per l'effetto di crosstalk, ricampionato alla stessa risoluzione spaziale (15m/pixel), georeferenziato e ortoretificato. Infine, attraverso l'applicazione della correzione atmosferica, i valori di radianza al sensore sono stati convertiti in valori di riflettanza al suolo. Nell'immagine dell'area Himalayana, caratterizzata da un'alta energia di rilievo, si è inoltre applicata la correzione topografica. Le firme spettrali ricavate dall'immagine satellitare sono state confrontate con quelle ad alta risoluzione di minerali, misurate in laboratorio e presenti nella libreria spettrale ASTER Spectral Library v.2.0 (Baldridge et al., 2009). A queste firme si sono aggiunte quelle di minerali e rocce di oltre 45 campioni di granitoidi raccolti nelle aree di studio ed analizzati con lo spettrofotometro VARIAN-CARY5000R nell'intervallo di lunghezze d'onda tra 0.35µm e 2.5µm (visibile -medio infrarosso) con una risoluzione di 1nm. Le firme spettrali ad alta risoluzione (circa 2150 bande) sono state così ricampionate secondo la risoluzione delle 9 bande ASTER. Le analisi di telerilevamento dell'area marocchina hanno consentito la distinzione di quattro plutoni calc-alcalini di età Ediacariana, caratterizzati da una composizione molto simile e da una diffusa copertura di vernice del deserto sulla superficie degli affioramenti. La discriminazione di queste rocce granitoidi è stata effettuata grazie allo studio delle immagini in scala di grigi e combinazioni RGB a falsi colori di bande ASTER, rapporti tra bande ASTER e classificazioni di tipo supervised, quali maximum-likelihood (MLL) e spectral angle mapper (SAM). I dati dei sistemi ASTER VNIR/SWIR (Visible Near Infra Red Region, Short Wave Infrared Region) si sono comunque mostrati più efficaci di quelli del sistema TIR (Thermal Infrared Region), nella discriminazione delle rocce considerate. Questo è principalmente dovuto alla presenza di alterazioni idrotermali e superficiali, caratterizzate da assorbimenti diagnostici nella regione VNIR-SWIR, che di fatto dipendono dall'evoluzione magmatica, dalla tessitura e dalla composizione del litotipo indagato. Le analisi di telerilevamento dell'area Himalayana, caratterizzata dalla presenza di vegetazione, nuvole, neve e ghiaccio ha richiesto l'utilizzo di tecniche più complesse di quelle utilizzate nell'area Marocchina, caratterizzata da una buona esposizione degli affioramenti. Il mascheramento dei pixel non rocciosi si è così mostrato un buon approccio in aree con clima alpino. Le firme spettrali da satellite degli affioramenti leucogranitici analizzati, si mostrano influenzate dalla presenza di un'associazione di roccia e licheni. Poichè le rocce granitiche sviluppano substrati acidi, la presenza di specie licheniche acidofiliche è diagnostica della composizione della roccia sottostante. La presenza congiunta di assorbimenti caratteristici dei licheni acidofilici e della muscovite negli spettri da satellite possono quindi essere interpretati come proxy della presenza di rocce leucogranitiche. Si sono quindi analizzate le immagini in scala di grigi e composizioni a fasi colori di rapporti tra bande, assorbimenti relativi di banda e componenti principali, mirate ad enfatizzare gli assorbimenti di licheni e muscovite. In questo modo, le elaborazioni di telerilevamento, unite alle analisi spettrali hanno portato alla scoperta di un corpo granitico di 110 km2 (Buraburi Granite-BG) nella regione del Dolpo (Nepal occidentale). I risultati portano a concludere che le fasi di pre-processing e processing mirate alle applicazioni geologiche del telerilevamento, devono essere scelte e pesate in base agli specifici contesti ambientali e stagionali. Infine si è dimostrata l'importanza dei proxies quali licheni acidofilici e vernice del deserto, nel riconoscimento indiretto, da satellite, di rocce granitiche.
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Richard, Ashlie. "A Case Study of Civil War Environmental and Medical History Through the Disease Seasoning of the 58th North Carolina Infantry Regiment in East Tennessee." Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/etd/3784.
Abstract:
This thesis is a case study aimed at a key argument in the emerging field of Civil War medical and environmental history. While historians have long acknowledged disease as a major killer during the Civil War, only recently have environmental and medical historians turned their collective attentions to unpacking the complex interconnections of disease, environmental conditions, and culture. By examining the 58th North Carolina Infantry Regiment from the mountains of western North Carolina, this thesis asserts that the combined role of the disease environment and conditions in military camps created the massive outbreaks of disease that characterized the seasoning process of the regiment. Furthermore, the soldiers were practical in their response to conditions, weighing family, nation, and other factors in the face of death. When the threat of disease combined with personal and other factors, many soldiers deserted or took other actions of self-preservation over loyalty to the Confederacy.
8
Richard, Ashlie. "A Case Study of Civil War Environmental and Medical History Through the Disease Seasoning of the 58th North Carolina Infantry Regiment in East Tennessee." Digital Commons @ East Tennessee State University, 2008. https://dc.etsu.edu/etd/3784.
Abstract:
This thesis is a case study aimed at a key argument in the emerging field of Civil War medical and environmental history. While historians have long acknowledged disease as a major killer during the Civil War, only recently have environmental and medical historians turned their collective attentions to unpacking the complex interconnections of disease, environmental conditions, and culture. By examining the 58th North Carolina Infantry Regiment from the mountains of western North Carolina, this thesis asserts that the combined role of the disease environment and conditions in military camps created the massive outbreaks of disease that characterized the seasoning process of the regiment. Furthermore, the soldiers were practical in their response to conditions, weighing family, nation, and other factors in the face of death. When the threat of disease combined with personal and other factors, many soldiers deserted or took other actions of self-preservation over loyalty to the Confederacy.
9
Guebsi, Ridha. "Impact de la vapeur d’eau et des aérosols désertiques sur le bilan radiatif et leurs contributions à l’intensification de la dépression thermique en Afrique de l’Ouest." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLV019/document.
Abstract:
Ce travail vise à améliorer notre compréhension de l'impact radiatif des aérosols et de la vapeur d'eau sur la dynamique de la dépression thermique saharienne (Saharan heat low, SHL) en utilisant une combinaison d'observations spatiales (MODIS, OMI et CALIOP) ainsi que le modèle de transfert radiatif STREAMER. La variabilité saisonnière moyenne de l’épaisseur optique des aérosols (AOD) et du contenu intégré en vapeur d'eau (IWVC) sur le Sahara, moyenné sur les 11 dernières années, est bien corrélée avec l'évolution saisonnière du SHL. Après l'apparition de la SHL, l'IWVC augmente progressivement au dessus du Sahara tandis que l'AOD présente un maximum localisé en août, associé à la présence de systèmes convectifs profonds formant au-dessus des monts Hoggar.Pour estimer l'impact radiatif saisonnier de la vapeur d'eau et des aérosols désertiques, le modèle de transfert STREAMER a été utilisé pour calculer le budget radiatif mensuel net de mai à septembre. Des profils verticaux mensuels moyens de température et d'humidité obtenus à partir des analyses du Centre européen pour les prévisions météorologiques à moyen terme (ECMWF) et des profils de coefficients d'extinction dérivés de CALIOP sont utilisés comme paramètres d'entrée pour le calcul du modèle. Nos travaux montrent que le forçage des aérosols dans le Sud-Ouest du massif de Hoggar domine le budget net radiatif de surface, tandis que la vapeur d'eau est le joueur le plus fort en termes de forçage en ondes longues LW. Le forçage en ondes courtes SW et longues LW associé aux aérosols et à la vapeur d'eau, respectivement, contribue au réchauffement de la basse troposphère sur le Sahara pendant l'été (lorsque le SHL est au-dessus du Sahara). A son tour, ce chauffage intensifie la circulation cyclonique du SHL conduisant ainsi à renforcer l’advection de la vapeur d'eau vers le Sahara.Par conséquent, l'analyse des tendances décennales de la vapeur d'eau dans les tropiques et sous-tropiques est importante pour accroître la connaissance de la dynamique de la SHL, une caractéristique essentielle de la mousson ouest-africaine.Par ailleurs et pour la première fois, nous montrons l'impact de la variabilité saisonnière de la mousson africaine associée à la modulation de la latitude du front intertropicale (FIT), du jet de basse couche (LLJ), du vent meridional et zonal, de l’intensité et la position de la dépression thermique saharienne et du jet d’est Africain (EAJ) sur le soulèvement de la poussière sur les deux périodes juin 2006 et juin 2011, correspondant respectivement aux campagnes AMMA et FENNEC.This work aims at enhancing our understanding of the radiative impact of aerosols and water vapor on the dynamics of the Saharan Heat Low (SHL) using a combination of space-borne observations (MODIS, OMI, CALIOP) and a radiative transfer model (STREAMER). The mean seasonal variability of aerosol optical depth (AOD) and integrated water vapor content (IWVC) over the Sahara, averaged over the last 11 years, is found to be well correlated with the seasonal evolution of the SHL. After the onset of the SHL, the IWVC is observed to increase steadily over the Sahara while the AOD exhibits a localized maximum during August associated with the presence of deep convective systems forming over the Hoggar Mountains.To estimate the seasonal radiative impact of water vapor and desert aerosols, STREAMER was used to calculate the net monthly radiative budget from May to September. Average monthly temperature and humidity profiles obtained from the European center for medium range weather forecast (ECMWF) analyses and extinction coefficient profiles derived from CALIOP are used as input parameters for the model calculation.Our work shows that the aerosols forcing in the shortwave (SW) dominates the net surface radiative budget, while water vapor is the strongest player in terms of longwave (LW) forcing. The SW and LW forcing associated with aerosols and water vapor, respectively, contribute to heating the lower troposphere over the Sahara during the summer (when the SHL is over the Sahara). In turn, this heating intensifies the cyclonic circulation of the SHL thereby leading to enhanced advection of water vapor towards the Sahara.Hence, analyzing the decadal trends of water vapor in the Tropics and sub-Tropics is important to increase knowledge of the dynamics of the SHL, a pivotal feature of the West African Monsoon system.For the first time we show the impact of the variability of the African monsoon associated with the modulation of the latitude of intertropical discontinuity (ITD), the Saharan Heat Low (SHL), the low level jet (LLJ) and African Easterly Jet (AEJ) on the uprising of dust during the periods of June 2006 and June 2011, corresponding to the AMMA and FENNEC field campaigns, respectively.
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PASTORE, GUIDO. "Sand provenance and dispersal in the Sahara and Kalahari deserts: fluvial aeolian interactions and climatic implications." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2023. https://hdl.handle.net/10281/404096.
Abstract:
Questa tesi presenta lo studio della composizione delle sabbie dei più grandi deserti africani e dei fiumi limitrofi al fine di illustrare gli effetti dell'interazione tra processi fluviali ed eolici sul trasporto di sedimenti in ambiente arido. Le sabbie del Sahara, del Kalahari e dello Zambesi sono state analizzate mediante petrografia, mineralogia della frazione pesante e geocronologia U-Pb di zirconi detritici. Per il caso di studio dello Zambesi sono stati analizzati anche la geochimica elementare, gli isotopi del Nd e i minerali delle argille. I campi di dune del Sahara sono, con poche eccezioni, composti da pura sabbia quarzosa con suite di minerali pesanti molto impoverite, dominate da minerali ultrastabili. La composizione varia solamente lungo la Valle del Nilo, in prossimità della catena dell'Anti-Atlante e alla provincia vulcanica libica. La sabbia delle dune del Kalahari è costituita principalmente da quarzo associato a minerali pesanti ultrastabili. La composizione varia solo ai margini occidentali e orientali del deserto, riflettendo in parte l’apporto fluviale di primo ciclo dai basamenti cristallini nella Namibia centrale, nello Zimbabwe occidentale e nelle dune vicino alle cascate Vittoria dove i sedimenti sono erosi dalle lave del Karoo. La morfologia segmentata del fiume Zambesi si riflette nella sua mineralogia e geochimica. La sabbia quarzosa erosa dalle dune del deserto del Kalahari viene progressivamente arricchita in frammenti litici basaltici e clinopirosseno. Successivamente nuovo apporto di sedimenti avviene a valle del lago Kariba, documentando una graduale diminuzione del quarzo e dei minerali ultrastabili. La composizione diventa quarzo-feldspatica nel tratto finale. L'abbondanza di feldspato nella sabbia del basso Zambesi non ha equivalenti tra i grandi fiumi sulla Terra e supera di gran lunga quella nei sedimenti del delta e della piattaforma, rivelando che il segnale di provenienza dell’alto Zambezi ha cessato di essere propagato a valle dopo la chiusura delle grandi dighe. La smectite, dominante nei fanghi generati dai basalti del Karoo o nel clima equatoriale delle pianure mozambicane, prevale su illite e kaolinite. La geochimica indica: l'aggiunta di quarzo per riciclo; l'erosione dei basalti del Karoo; l’erosione dei basamenti precambriani. Lo studio di Sahara e Kalahari consente di mettere a confronto deserti dominati dai processi eolici e deserti caratterizzati da una consistente interazione fluvio-eolica. Nel Sahara, la maggior parte della sabbia sembra essere riciclata da arenarie quarzose e il principale meccanismo erosivo e di trasporto è il vento. Nel Kalahari, i sedimenti sono trasportati dai fiumi che, erodendo gli orogeni ai fianchi del deserto, accumulano e omogeneizzano il detrito al centro del bacino grazie all’azione eolica. Lo studio permette di riconsiderare criticamente diversi dogmi della sedimentologia, come il presunto aumento della “maturità” mineralogica durante il trasporto fluviale: i sedimenti dell’alto Zambezi, erosi dalle dune del Kalahari e ricchi di quarzo, vengono progressivamente diluiti da sedimenti lito-feldspatici lungo il corso del fiume. Gli indici geochimici e la composizione dei fanghi sembrano indicare maggiore alterazione chimica nell'arido bacino dell’alto Zambesi rispetto al più umido Zambesi centrale e inferiore, testimoniando che il segnale di “paleo-alterazione del Kalahari” registrato nei sedimenti delle dune viene trasportato a valle fino alla foce.This thesis presents a study of the composition of sand from desert dunes and adjacent rivers across the African continent to illustrate the effects of the interplay between fluvial and aeolian processes on sediment transport in desertic environments. The Sahara, Kalahari and Zambezi samples were analyzed by bulk-petrography, heavy-mineral, and detrital-zircon U–Pb geochronology. For the Zambezi case study, elemental geochemistry, Nd isotopes and clay minerals were also analyzed. Saharan dune fields are generally composed of pure quartzose sand with very poor heavy-mineral suites dominated by ultrastable minerals. Relatively varied compositions characterize sand along the Nile Valley, the southern front of the Anti-Atlas belt and near a basaltic field in Libya. Kalahari dune sand mostly consists of monocrystalline quartz associated with durable heavy. Composition varies only at the western and eastern edges of the desert, reflecting partly first-cycle fluvial supply eroded from crystalline basements of Cambrian to Archean age in central Namibia and western Zimbabwe. Basaltic detritus from Jurassic Karoo lavas is dominant in dunes near Victoria Falls. The segmented morphology of Zambezi River is reflected by its mineralogy and geochemistry. Pure quartzose sand recycled from Kalahari Desert dunes in the uppermost tract is next progressively enriched in basaltic rock fragments and clinopyroxene. Sediment load is renewed first downstream of Lake Kariba, documenting a stepwise decrease in quartz and durable heavy minerals. Composition becomes quartzo-feldspathic in the lower tract. Feldspar abundance in Lower Zambezi sand has no equivalent among big rivers on Earth and far exceeds that in sediments of the northern delta, shelf, and slope, revealing that provenance signals from the upper reaches have ceased to be transmitted across the routing system after closure of the big dams. Irumide ages predominate over Pan-African, Eburnean, and Neoarchean ages. Smectite, dominant in mud generated from Karoo basalts or in the equatorial climate of the Mozambican lowlands, prevails over illite and kaolinite. Elemental geochemistry reflects quartz addition by recycling, supply from Karoo basalts, and first-cycle provenance from Precambrian basements. Sahara and Kalahari case studies allow to study in situ sand generation by wind erosion versus external fluvial supply in arid environment. In the Sahara, most sand appears to be recycled from rocks with high sand-generation potential, and the main transport mechanism is the wind saltation and dune movement. In Kalahari, sediments are fed by rivers by first cycle erosion of exposed orogens at the flanks of the desert and therein homogenised. The contrasting effect of strong recycling by wind and fresh supply from rivers are the key factor for most deserts studied in literature and their identification in terms of mineralogy and provenance is proved to be precious for present and past climatic debate. In addition, evaluating the results from the Kalahari and Zambezi studies allows to critically reconsider several dogmas, such as the supposed increase of mineralogical “maturity” during long-distance fluvial transport. This is strongly affected by provenance factors: quartz-rich recycled Kalahari dune sand is progressively diluted along the Zambezi River by sediment supplied by different crustal domains. Inheritance of the “Kalahari paleo-weathering signal” by Zambezi River is highlighted also by geochemical indexes and mud composition which appear to be oddly more affected by weathering in the arid Uppermost Zambezi catchment than in the wetter Middle and Lower Zambezi.
Books on the topic "DESERTICAS":
1
Li, Jinming. Yan Zhao jing lei: Zheng qu Gao Shuxun qi yi ji shi. 8th ed. Beijing: Jie fang jun chu ban she, 2002.
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Zhang, Mingjin. Guo min dang jiang ling 10 ci da qi yi. 8th ed. Jinan Shi: Huang he chu ban she, 2008.
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Deng, Gaoru. Tian bian Chuan Kang: Zheng qu Liu Wenhui, Deng Xihou, Pan Wenhua qi yi ji shi. 8th ed. Beijing: Jie fang jun chu ban she, 2002.
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Li, Jinming. Hong se gao can: Zheng qu Gao Shuxun qi yi ji shi. 8th ed. Beijing: Jie fang jun chu ban she, 2009.
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Deng, Gaoru. Mi mi shi ming: Zheng qu Liu Wenhui, Deng Xihou, Pan Wenhua qi yi ji shi. 8th ed. Beijing: Jie fang jun chu ban she, 2009.
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Liu, Shiding. Xun chang wang shi: Hui yi zu fu Liu Wenhui. 8th ed. Beijing Shi: Xin xing chu ban she, 2009.
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Miralles, Esther. Emboscats: La guerra dels que no hi van anar. Badalona: Ara Llibres, 2013.
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Li, Youjun. Nan wang Xiang Yun: Zheng qu Cheng Qian, Chen Mingren qi yi ji shi. 8th ed. Beijing: Jie fang jun chu ban she, 2002.
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Liu, Dongyuan. Te shu ren wu: Zheng qu Zeng Zesheng, Pan Shuoduan qi yi ji shi. 8th ed. Beijing: Jie fang jun chu ban she, 2009.
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Li, Youjun. Ce fan ying xiong: Zheng qu Cheng Qian, Chen Mingren qi yi ji shi. 8th ed. Beijing: Jie fang jun chu ban she, 2009.
Book chapters on the topic "DESERTICAS":
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Koné, Alassane, Allyx Fontaine, Maud Loireau, Salifou Nouhou Jangorzo, and Samira El Yacoubi. "DESERTICAS, a Software to Simulate Desertification Based on MEDALUS and Cellular Automata." In Lecture Notes in Computer Science, 198–208. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69480-7_20.
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Hernández-Herrera, José Antonio, Luis Manuel Valenzuela-Nuñez, Juan Antonio Encina-Domínguez, Aldo Rafael Martínez-Sifuentes, Eduardo Alberto Lara-Reimers, and Cayetano Navarrete-Molina. "Mexican Desertic Medicinal Plants." In Aromatic and Medicinal Plants of Drylands and Deserts, 7–88. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003251255-2.
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López-Romero, Julio Cesar, Heriberto Torres-Moreno, Arely del Rocio Ireta-Paredes, Ana Veronica Charles-Rodríguez, and María Liliana Flores-López. "Chemical and Bioactive Compounds from Mexican Desertic Medicinal Plants." In Aromatic and Medicinal Plants of Drylands and Deserts, 189–218. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003251255-9.
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Roisman, Joseph. "Desertions and the rise and fall of rulers in Hellenistic Macedonia." In Alexander the Great and Propaganda, 150–61. Abingdon, Oxon ; New York, NY : Routledge, 2021.: Routledge, 2021. http://dx.doi.org/10.4324/9781315114408-9.
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Prządka-Giersz, Patrycja, Miłosz Giersz, and Julia M. Chyla. "Flexible Borders, Permeable Territories and the Role of Water Management in Territorial Dynamics in Pre-Hispanic and Early Hispanic Peru." In Living with Nature, Cherishing Language, 23–53. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-38739-5_2.
Abstract:
AbstractThe Peruvian Andes are well known for its ethnic and highly compressed ecological diversity. Ancient and modern Andean societies faced and continue to face various crises of climatic, social, political, or economic nature. Those crises forced the population to establish different types of inter-group relationships and identities, resulting in vast range of competitive/cooperative behaviors across the varied social and physical landscapes, including warfare, trade, alliance-building, co-residence, and any combinations of these and other practices. Judging by the results of systematic surveys and archaeological excavations run by the authors for the last 20 years, access to water resources has always been a major concern, especially in the vast desert areas on the coast of today's Peru. Using spatial, diachronic, and multidisciplinary approaches and employing fieldwork data from the archaeological sites of the province of Huarmey authors try to better understand the nature and outcome of distinct groups interacting across the varied social and physical landscapes of the desertic coast and highlands and how their different entanglements shaped the geo-political landscape of this area throughout the pre-Hispanic and early Hispanic periods.
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"desertic, adj." In Oxford English Dictionary. 3rd ed. Oxford University Press, 2023. http://dx.doi.org/10.1093/oed/7830512543.
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"Doubts, desertions and decline, 1880–94." In Gladstone and the Liberal Party, 66–80. Routledge, 2006. http://dx.doi.org/10.4324/9780203129258-5.
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Zanovello, Paola. "Acqua, irrigazione e agricoltura in territori pre-desertici:." In Tales of Three Worlds - Archaeology and Beyond: Asia, Italy, Africa, 342–52. Archaeopress Publishing Ltd, 2020. http://dx.doi.org/10.2307/j.ctv10crdr5.33.
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Daniel, Larry J. "The Manpower Problem." In Conquered, 115–32. University of North Carolina Press, 2019. http://dx.doi.org/10.5149/northcarolina/9781469649504.003.0009.
Abstract:
By the beginning of 1863, the army of Tennessee was rapidly losing men. Few were respectful of the mandatory conscription act, and the men that did report for duty were often of poor quality. Officers took a number of actions to increase the army’s ranks and to improve the behavior and discipline of soldiers. Desertions and disobedience were increasingly met with harsh punishments and executions. Bragg created a provost to crack down on anything that jeopardized the army’s functionality. The provost arrested deserters, guarded prisoners of war, closed down brothels, and generally policed the army. Realizing the Confederate Conscript Bureaux was ineffective, Bragg placed Gideon Pillow in charge of conscription, bypassing the Richmond bureaux. Pillow rounded up thousands of new conscripts, but many of them were unwilling. Many men continued to desert the army to return home or turned themselves into the enemy. Other additions to the army were returning absentees and exchanged prisoners; however, reenlistment and conscription campaigns ultimately did not make up the substantial losses caused by desertions.
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Kasprzycki, Remigiusz. "Polacy wobec służby wojskowej w armiach zaborczych i polskich zbrojnych formacjach niepodległościowych w latach 1910–1918. Unikanie poboru i dezercje." In Polityka - wojskowość - bezpieczeństwo. Księga jubileuszowa z okazji 40-lecia działalności naukowej Profesora Romana Kochnow, 295–316. Wydawnictwo Naukowe Uniwersytetu Pedagogicznego w Krakowie, 2023. http://dx.doi.org/10.24917/9788380849396.18.
Abstract:
Before the outbreak of the Great War thousands of Poles living in Austria-Hungary, Russia and Germany were hiding from conscription to the army. However, this did not affect the efficient mobilization to the Austro-Hungarian, Russian and especially German armies in the summer of 1914. The desertions of the First World War were a bigger problem. In the years 1914–1918, Polish soldiers deserted both from the occupation forces and from Polish independence formations. The article introduces this issue.
Conference papers on the topic "DESERTICAS":
1
Cabor, F., O. Hagolle, H. Cosnefroy, and X. Briottet. "Inter-calibration using desertic sites as a reference target." In IGARSS '98. Sensing and Managing the Environment. 1998 IEEE International Geoscience and Remote Sensing. Symposium Proceedings. (Cat. No.98CH36174). IEEE, 1998. http://dx.doi.org/10.1109/igarss.1998.702327.
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Borana, S. L., S. K. Yadav, and S. K. Parihar. "Hyperspectral Data Analysis for Desertic Vegetation of Jodhpur Area." In 2020 3rd International Conference on Emerging Technologies in Computer Engineering: Machine Learning and Internet of Things (ICETCE). IEEE, 2020. http://dx.doi.org/10.1109/icetce48199.2020.9091749.
3
Coman, Mirela. "PSEUDO DESERTIC MINING AREAS FROM BAIA MARE MINING BASIN, ROMANIA." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017h/43/s19.058.
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Benslimane, Nawal, and Ratiba Wided Biara. "Stratagems of popular homes in the desertic climate…now, in the process of perdition." In TECHNOLOGIES AND MATERIALS FOR RENEWABLE ENERGY, ENVIRONMENT AND SUSTAINABILITY: TMREES16-Cnam. Author(s), 2017. http://dx.doi.org/10.1063/1.4976256.
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Lavigne, Daniel A. "Assessment of new camouflage prototypes deployed in semi-desertic environments using hyperspectral polarimetric imaging sensors." In Electro-optical and Infrared Systems: Technology and Applications XVII, edited by Duncan L. Hickman and Helge Bürsing. SPIE, 2020. http://dx.doi.org/10.1117/12.2573245.
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Arias Gallego, Carolina, Shashank Sakleshpur Nagaraja, and Mani Sarathy. "Pyrolysis of Macroalga Macrocystis Pyrifera for Production of Green Carbon-Negative Hydrogen." In ADIPEC. SPE, 2022. http://dx.doi.org/10.2118/210809-ms.
Abstract:
Abstract Stringent emission norms worldwide have provided an impetus to explore alternative sustainable fuels that are carbon neutral. Hydrogen is touted as one of the potential fuels that aid decarbonization. Biomass, especially the ones that do not compete with the food needs are considered promising feedstock for hydrogen production by thermal conversion. In the current study, the performance of the macroalga Macrocystis pyrifera in the thermal conversion through pyrolysis as a potential biomass for hydrogen production was examined. The macroalga Macrocystis pyrifera is a giant brown seaweed commonly found in the Pacific Rim. It is characterized by its fast-growing ability and photosynthetic metabolism that generates carbon sources from atmospheric CO2. This alga is a potential biomass to be applied in bioenergy with carbon capture and storage (BECCS), which enables carbon-negative biofuels to avoid greenhouse emissions from biomass processing and use. Pyrolysis is a conventional method for the thermal conversion of biomass with low moisture into potential fuels. This process consists of decomposing the biomass into charcoal, light hydrocarbons, and non-condensable gases by the action of high temperatures (350-600°C) and the atmospheric pressure. The pyrolysis of the macroalga is applied to a process simulation in Aspen plus V12 with an optimization achieved by multiple sensitivity analyses. Additionally, to upgrade the hydrogen production from a carbon-neutral biofuel to BECCS, a carbon capture unit by physical absorption with dimethyl ethers of polyethylene glycol (DEPG) is included using a hierarchy user model of the software. The results showed a high sensitivity of the temperature. Additionally, a second reactor and a water gas shift unit were necessary to maximize the hydrogen production. The temperature profile showed a maximum production of hydrogen at 500°C with the following reduction of its yield at higher temperature values due to the enhanced carbon monoxide production. Additionally, a second reactor operating under the same conditions as a gasifier and a water gas shift unit based on the Le Chatelier principle successfully increased the hydrogen production by 50%. Finally, a hydrogen yield of 2.06% was reached. The study related to the thermal conversion of this alga is an opening to the study of the thermal conversion of biomass commonly found in desertic or semi-desertic climates such as halophytes or salicornia.
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Conde Mendoza, Luis Angel, Alejandro Carhuavilca, Renzo Perich, Jesús Montes-Romero, José Angulo, Andres Guerra, Emilio Muñoz, and Juan de la Casa. "Performance Evaluation and Characterization of Different Photovoltaic Technologies Under the Coastal, Desertic Climate Conditions of Lima, Peru." In ISES Solar World Congress 2019/IEA SHC International Conference on Solar Heating and Cooling for Buildings and Industry 2019. Freiburg, Germany: International Solar Energy Society, 2019. http://dx.doi.org/10.18086/swc.2019.16.01.
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Maadjoudj, D., A. Mekhaldi, and M. Teguar. "Recurrent plot and quantification of leakage current for monitoring the insulator surface state under non-uniform desertic pollution." In 2017 5th International Conference on Electrical Engineering - Boumerdes (ICEE-B). IEEE, 2017. http://dx.doi.org/10.1109/icee-b.2017.8192152.
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Pesaresi, Martino, and Andrea Gerhardinger. "Morphological image filtering for improvement of textural built-up index performances in case of presence of scattered vegetation in semi-desertic areas." In 2009 Joint Urban Remote Sensing Event. IEEE, 2009. http://dx.doi.org/10.1109/urs.2009.5137483.
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Baska, Philippe, Alexandre François-Heude, Cécile Millet, and Florian Thebault. "Ageing Resistance of Bi-Layer Coating Systems for Dry Lubrication of Premium OCTG Connections." In Abu Dhabi International Petroleum Exhibition & Conference. SPE, 2021. http://dx.doi.org/10.2118/208183-ms.
Abstract:
Abstract The latest dope-free configuration combines an electrodeposited zinc-nickel (ZnNi) plating, which provides anti-galling and most of anticorrosion properties, and an organic topcoat which provides lubrication through its low friction coefficient. This dry lubrication constitutes an alternative to storage and running dope meanwhile it improves running performances, reduces operational costs on the yard and rig and avoids dope discharge to the environment. Since the technology is "rig-ready", it must withstand the different risks of degradation occurring along its whole lifecycle. The present study aims at assessing the robustness towards ageing along storage on yards, transportation to the rig and or service life in well conditions. The performances of the different layers were checked stepwise, first assessing the ZnNi plating alone, and then considering the additional protection brought by thermoset topcoat. Regarding atmospheric corrosion, the characterization path involved both accelerated laboratory tests (such as the VDA 233-102 cyclic corrosion test) and outdoor exposures, under plastic protectors and after their removal, in different climates: temperate, desertic and tropical. The specimens were inspected regarding at: (i) efficiency of cathodic protection provided by the metallic coating; (ii) paint blistering, (iii) propagation of corrosion from a scribe down to substrate. Regarding rig operations, some examples of rig-return were reported and the compatibility with completion fluids, encountered in case of misrun and subsequent pull-out of the column, was checked though immersion in alkaline brines. In respect to the service in simulated well conditions, the resistance to Stress Corrosion Cracking (SCC) in brines were carried out to complete the former autoclave tests to assess resistance of carbon and stainless steel to well conditions. Both the ZnNi plating and the bi-layer system revealed lifetimes in storage conditions ranging from 3 to more than 5 years before any sign of significant degradation such as red rust, paint blistering or disbonding. According to cyclic corrosion tests results, higher lifetimes could be even expected thanks to the additional anticorrosion protection of the topcoat. Regarding exposure to completion fluids, the bilayer coating was shown to withstand 3000h exposure with no more than scarce rust indications. These results testify of the technology robustness from storage on yards to rig operations. In the multiple service conditions in wells, it was shown that the corrosion and cracking resistance of the substrate was not deteriorated by the plating presence, but instead improved in the multiple assessed well service conditions. The present communication updates the results of atmospheric corrosion compared to the former one [1] and it details new results after rig-return and regarding the risks of cracking.