scholarly journals Evaluación de la energía mareomotriz en el norte del Golfo de California con fines de generación de energía eléctrica

2019 ◽  
pp. 33-39
Author(s):  
José Ramón Quiñonez-Osuna ◽  
Silvio Guido Marinone-Moschetto ◽  
María Dolores Flores-Aguilar ◽  
Domingo Carmona-Duarte
Keyword(s):  
Gulf Of California ◽  
Northern Region ◽  
Tidal Currents ◽  
The North ◽  
Generation Plant ◽  
Continuous Generation ◽  
Tidal Changes ◽  
History Of ◽  
Data History

The tidal currents constitute a clean and inexhaustible source of energy. The determination of its magnitude in the north of the Gulf of California with a view to its use, represented the central objective of this work. The methodology included an exhaustive search of measurements of tidal currents, the generation of a text file of ordered time-speed data (history of speeds as a tabulation) from the found graphs of speeds, and finally its processing, which consisted of the histories of the current power density and power generated by a standard turbine, as well as the corresponding graphs of frequency and equivalence with respect to a continuous generation plant. The results show that the energy available in the tidal currents of the northern region of the Gulf of California is lower than that of other areas of the world with radical tidal changes; however, it is considered that the installation of several farms instead of one, located in the places where the currents reach higher speeds, together with the use of other renewable sources available in the region, constitute altogether an important option that must be considered.

“Opting Out”: An Experiment with Jurisdiction in Northern Nigeria

1964 ◽  
Vol 8 (1) ◽  
pp. 20-28
Author(s):  
S. S. Richardson
Keyword(s):  
African State ◽  
Northern Region ◽  
Regional Government ◽  
Northern Nigeria ◽  
Legal Systems ◽  
Opting Out ◽  
Strong Case ◽  
The North ◽  
History Of ◽  
The Government

With the commencement of the Native Courts (Amendment) Law, 1961, the Government of the Northern Region of Nigeria abolished “opting out”, an experiment with jurisdiction which must surely be unique within the history of modern legal systems and therefore worthy of recording before the facts are obscured and lest any other African state, faced with similar difficulties, is tempted to adopt this expedient as a temporary palliative to meet a similar situation. It is all the more desirable to publish the facts since the strong case for abolition presented by the Northern Regional Government is in danger of being lost by default. On 14th October, 1961, the Daily Service in Nigeria published a bitter attack on the Native Courts (Amendment) Law, 1961, under the title “The light goes out in the North”.

scholarly journals Pictures in the Soviet Northern discourse of the 30s (based on the materials of the newspaper «Khanty-Mansi Shop (Shoy) / Ostyako-Vogulskaya Pravda»)

2021 ◽  
Vol 11 (3) ◽  
pp. 584-597
Author(s):  
А. G. Kiselev ◽  
◽  
S. V Onina ◽  
Keyword(s):  
Visual Arts ◽  
The North ◽  
Academic History ◽  
Visual Approach ◽  
History Of ◽  
The Subject ◽  
History Of Journalism ◽  
Visual Range

Introduction: a notable phenomenon of modern historiography is the visual turn, which presupposes the study of history as the history of images. The subject of the research is the images published in the newspaper «Khanty-Mansi Shop (Shoy). Ostyako-Vogulskaya Pravda» in 1931–1939. Objective: presentation of the ethno-cultural segment of the visual range of the newspaper and on this basis the determination of its communicative capabilities in relations with the viewer-reader from among the indigenous peoples of the North. Research materials: newspaper images, works of theorists and practitioners of the photo department, party documents of the pre-war period. Results and novelty of the research: the classification of ethno-images is given; the connection between the dynamics of their publication and the socio-political trends in the country’s development has been clarified. As a common feature of ethno-images, their conventionality and simplicity are shown, which correlates with the peculiarities of the «northern style» in the visual arts of the Ob Ugrians. The weakness of the visual range is shown, which hindered the transformation of the newspaper into a mass, nationally oriented publication. The scientific novelty is determined both by the visual approach itself, and by the introduction into scientific circulation of a complex of images of the Ostyako-Vogul newspaper; observations and conclusions can be used in the preparation of the corresponding section of the academic history of Yugra, as well as special courses on the history of journalism.

Phylogeography and species delimitation in the New Zealand endemic, genetically hypervariable harvestman species, Aoraki denticulata (Arachnida, Opiliones, Cyphophthalmi)

2014 ◽  
Vol 28 (4) ◽  
pp. 401 ◽  
Author(s):  
Rosa Fernández ◽  
Gonzalo Giribet
Keyword(s):  
New Zealand ◽  
Species Delimitation ◽  
Northern Region ◽  
Genetic Connectivity ◽  
The North ◽  
Geographic Structure ◽  
Large Numbers ◽  
North Eastern ◽  
History Of ◽  
Complex Scenario

Aoraki denticulata, a widespread mite harvestman endemic to the NW South Island of New Zealand, was postulated to constitute an old lineage with deep genetic history. Expanding on previous studies, we explored its genetic diversity and population structure, phylogeography and diversification patterns. We also examined the systematic implications of such a complex scenario through species delimitation analyses under coalescent-based and barcoding gap discovery methodologies. Our results depict the deep evolutionary history of the A. denticulata lineage, which shows high geographic structure and low genetic connectivity among modern populations. Aoraki denticulata is further subdivided into three lineages: a lineage presently inhabiting the northern region of the Southern Alps (and including the subspecies A. d. major), a second lineage in the north-eastern part of the sampled land, and a third one occupying the south-eastern localities. When using species delimitation methods based on coalescence approaches, large numbers of cryptic species were estimated. Based on morphological and biological evidence, we thus argue that these methods may overestimate species in cases in which genetic divergence is unusually large and discuss the systematic implications of our findings.

scholarly journals Visualization of music, musicians, and musical instruments in the works of Adyghe artists

2021 ◽  
pp. 1-21
Author(s):  
Alla Nikolaevna Sokolova
Keyword(s):  
Future Generation ◽  
Musical Instruments ◽  
Special Technique ◽  
Regional Culture ◽  
North Caucasus ◽  
The Past ◽  
The North ◽  
History Of

This article reviews painting and graphics of Adyghe artists, which plotlines and images resemble musical instruments, musicians, and in a certain way, music itself. The author assumes that the entire heritage in this area can be divided into three groups. The first group contains the artworks that are perceived as historical documents testifying to the presence or absence of certain types of musical instruments, ways of playing those, dances, dance positions, moves, etc.; this also includes paintings with ethnographically precise reproduction of the past or present reality, which depicts music and motions. The second group contains the portraits of prominent musicians who significantly contributed to the history of regional culture. The third group is comprised of the musical instruments and dance, which visualize something secret behind the traditional things. Each group has a special technique and means of visualization of music and musical instruments. The novelty of this research lies in examination of the canvases of Adyghe painters preserved in the funds of the North Caucasus branch of the State Museum of Oriental Art (Maykop), and are virtually unknown to the general audience; in articulation of the topic aimed at examination of means of visualization of music, musical instruments and musicians in painting and graphics; in the proposed non-homogeneous classification of painting heritage related to music, musical instruments and musicians, which can be implicated to any other regional culture; in determination of the role of this type of cultural heritage for future generation. It is stated that painting and graphics exhibited in museums are not perceives so much the past as the present, which is included in the cultural and emotional-psychological life of modernity.

The South Mayo Trough: a possible Ordovician Gulf of California-type marginal basin in the west of Ireland

1977 ◽  
Vol 14 (11) ◽  
pp. 2453-2461 ◽  
Author(s):  
Paul D. Ryan ◽  
Jean B. Archer
Keyword(s):  
Gulf Of California ◽  
Sedimentary Basin ◽  
The South ◽  
Source Areas ◽  
Marginal Basin ◽  
The North ◽  
History Of ◽  
Controlled Deposition ◽  
Uplift And Erosion ◽  
North And South

The South Mayo Trough, an early Ordovician sedimentary basin, was developed at the southern margin of the Laurentian plate. It controlled deposition of 12.8 km of sediment. Basic vulcanism accompanied the opening of the trough. This was followed by the deposition of turbidites and finally of fluvio-deltaic sediments. Initial island arc vulcanism was replaced by a bimodal basalt–rhyolite suite during sedimentation. The trough was bounded to the north and south by metamorphic source areas, of which the southerly, the Connemara Cordillera, was the more important. The Connemara Cordillera, comprised of Dalradian continental margin sediments, was deformed and metamorphosed before the trough's formation. Uplift and erosion of Connemara, opening of the trough, and change in vulcanism all occurred during late Tremadoc – early Arenig times. These events are related to the collision of the Iapetus ridge with a trench to the south of Connemara, which initiated a Gulf of California-type marginal basin, the South Mayo Trough. Comparisons between the morphology and sedimentary history of the trough with that of the Gulf of California and the geology of their adjacent source areas support this hypothesis.

scholarly journals Host Suitability of Weeds to the Root Lesions Nematoid in Soybean Areas in the North of Goias, Brazil

2019 ◽  
Vol 11 (4) ◽  
pp. 485
Author(s):  
Rafael M. da Silva ◽  
Anderli D. F. Rios ◽  
Denise R. Conceição ◽  
Wilian H. D. Buso ◽  
Alan S. Machado ◽  
...  
Keyword(s):  
Northern Region ◽  
Host Suitability ◽  
Weed Species ◽  
Population Densities ◽  
Commelina Benghalensis ◽  
The North ◽  
As Species ◽  
Hyptis Suaveolens ◽  
History Of ◽  
Natural Infestation

Several studies have done more on weed and nematode hosts. It is important to know a host of weeds and P. brachyurus in areas cultivated with soy. This nematode can stay in weed roots even in the absence of plants grown in the off-season, making it difficult to control them. The objective was to evaluate the host suitability of emerged weed species in cultivated areas with a soybean crop to the P. brachyurus nematode under natural infestation conditions. The surveys were conducted in commercial properties located in the municipalities of Campinorte and Rialma, both in the northern region of the state of Goias, Brazil under the no-tillage and conventional system, respectively, with a history of high nematode population densities. We evaluated 19 weed species with the highest expressivity in the properties. The population densities of the nematode ranged RFom 23 to 17,113 and 55 to 4,221 specimens per 10 grams of roots respectively. All as weed species evaluated as hosts of P. brachyurus. As species, Hyptis suaveolens, Sida cardifolia, Senna occidentalis, Coneyza canadensis and Commelina benghalensis had low population densities.

scholarly journals Routine K/Ar age determination on post-Silurian dolerite dykes, North Greenland fold belt

1983 ◽  
Vol 115 ◽  
pp. 9-14
Author(s):  
P.R Dawes ◽  
D.C Rex ◽  
N.J Soper
Keyword(s):  
Age Determination ◽  
Field Studies ◽  
Fold Belt ◽  
The North ◽  
Isotopic Analyses ◽  
History Of ◽  
Magmatic History ◽  
The University ◽  
North Greenland

This note documents results of routine K/Ar isotopic age determination of dolerite dykes from the North Greenland fold belt. All the material was collected in 1969 by two of us (P.R.D. and N.J.S.) during the Joint Services Expedition to Peary Land; the isotopic analyses have been undertaken by D.C.R. in the geologicallaboratories of the University of Leeds. In view of the renewed interest in the tectonic and magmatic history of the Peary Land region stemming from the systematic field studies carried out by GGU in 1978-1980 (see GGU Rapport 88, 99 and 106), the results of this early dating programme are listed here as a contribution to this discussion. Recently, some reference has been made in the literature to these hitherto unpublished results (Dawes & Soper, 1979; Higgins et al., 1981; Håkansson & Pedersen, 1982).

scholarly journals Crustal Structure Across the Northern Region of the Islas Marías Archipelago

2021 ◽  
Vol 9 ◽  
Author(s):  
Luis Alfredo Madrigal ◽  
Diana Núñez ◽  
Felipe de Jesús Escalona-Alcázar ◽  
Francisco Javier Núñez-Cornú
Keyword(s):  
Crustal Structure ◽  
North American ◽  
Gulf Of California ◽  
Deep Structure ◽  
Sedimentary Basins ◽  
Northern Region ◽  
North American Plate ◽  
Study Region ◽  
The North ◽  
Rivera Plate

The tectonic interaction between the Rivera and North American plates north of the Bahía de Banderas is poorly understood. The nature of the crust and where the subduction ends in the western part of the Islas Marias Archipelago are still controversial. Based on new geophysical data provided by the TsuJal project, we present the shallow and deep crustal structure of the Rivera–North American plate contact zone along two seismic transects, TS09b and RTSIM01b, and the bathymetry obtained across the northern region of María Madre Island. Detailed bathymetric analysis allowed mapping of a series of lineaments along the study region, with two main preferred tendencies (020–050° and 290–320°) associated with the evolution of the Pacific-Rivera rise and the transform faults of the Gulf of California, respectively. The shallow structure is characterized by five sedimentary basins without deformation, whose horizons are subparallel, suggesting that the sediment deposition occurred after the extension process ended. The deep structure corresponds to a transition between oceanic crust (Rivera Plate), with an average thickness of ∼10 km to the Islas Marías Escarpment, and a thinned continental crust, whose thickness increases toward the continent until it reaches 28 km, with a dip angle of 7–10°. The absence of an accretionary prism suggests that the subduction process of the Rivera Plate beneath the North American Plate to the north of Islas Marías has ceased. In this study, we determined that the morphological expression of the northern limit of the Rivera Plate corresponds to the Islas Marías Escarpment.

A mactrid bivalve from Pleistocene deposits of Lake Russell, Mono Basin, California

2009 ◽  
Vol 83 (3) ◽  
pp. 496-499 ◽  
Author(s):  
Robert Hershler ◽  
Angela S. Jayko
Keyword(s):  
United States ◽  
Gulf Of California ◽  
Gulf Coast ◽  
Eastern United States ◽  
Salinity Regime ◽  
The North ◽  
Biogeographic History ◽  
Coastal Marine ◽  
Central United States ◽  
History Of

Rangia des Moulins, 1832 is a small genus of mactrid bivalves that is currently distributed in estuarine waters of the eastern United States, Gulf of Mexico, and Gulf of California (Keen, 1971; Abbott, 1974). (One congener, R. cuneata [Sowerby, 1831], was recently introduced to the Antwerp (Belgium) harbor [Verween et al., 2006].) Although these clams are euryhaline and capable of living in freshwater as adults, they require an estuarine-like salinity regime for successful reproduction and recruitment (Cain, 1973; Hopkins et al., 1974), which has constrained their ability to penetrate the North American continental interior through coastal drainages (Cain, 1974; Swingle and Brand, 1974). the Neogene and Quaternary fossil record of the genus is also restricted to coastal or near-coastal marine-influenced depositional systems, with the exception of Holocene specimens of R. cuneata from two archeological sites in the central United States which were obviously introduced by humans (Baker, 1941; Hill, 1983), and a Pleistocene(?) occurrence of this species from along the Pecos River in New Mexico (more than 800 km from the sea) which has been attributed to transport of Gulf Coast immigrants on waterfowl (Metcalf, 1980; Taylor, 1985). Here we provide fossil evidence that the biogeographic history of this predominantly brackish-coastal genus also includes avian-assisted colonization of a far inland lake in the western United States—Pleistocene Lake Russell, Mono Basin, California (Fig. 1).

scholarly journals Church of the Nativity of Christ in the village of Purnema of Onezhsky District of Archangelsk Region as an example of stave temple architecture of the late XIX century in the European North of Russia

2020 ◽  
pp. 74-85
Author(s):  
Elizaveta Vladimirovna Khatanzeiskaya
Keyword(s):  
Cultural Landscapes ◽  
Practical Importance ◽  
The North ◽  
Current State ◽  
Temple Complex ◽  
Russian North ◽  
History Of ◽  
Xix Century ◽  
The Village

This article is dedicated to the history of temple complex of the rural settlement of Purnema of Onezhsky District of Archangelsk Region, where in the early XX century was situated the three-part ensemble comprised of two churches – tent-roofed Nikolskaya (1618), Church of the Nativity of Christ (1860-1861), and a bell tower that survived until the early 1930s. Relevance of the topic is substantiated by the fact that the monuments of stave architecture, masterpieces of temple architecture of the Russian North are vanishing, and the North loses its cultural uniqueness. The aforementioned temple complex is one of the few preserved in the Russian North. Attention is turned to the current state of the temple complex, status and significance of monuments, their boundaries, current state protection regime, and the need for taking immediate measures to preserve them as the objects of cultural heritage in the historical environment. The goal of this research consists in determination of the distinctness of temple complex in the village of Purnema within the cultural-historical landscape of the Russian North and its present significance. The scientific novelty is defined by the fact that the history of the Church of the Nativity of Christ has not previously been the subject of special research among historians and art historians. The article employs archival data and documentary photographs that are newly introduced into the scientific discourse. The acquired results allow concluding that the monument should become state registered. The practical importance of this work is that the presented materials can be used in elaboration and implementation of the state strategy aimed at preservation and development of unique Northern and Arctic cultural landscapes, historical settlements, monuments of religious and civil architecture, their scientific restoration, museification and revalorization.

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