bluuebunny/crossref_metadata_2025 huggingface dataset:
Gravity measurements in the Slave and Bear structural provinces, Northwest Territories
Authors: Hornal R W , Boyd J B
Published: March 2017

Sorne 4,700 gravity observations were used to compile seven Bouguer anomaly maps at a scale of 1:500,000 covering an area of the Canadian Shield bounded by latitudes 620 and 700 N and longitudes 1040 and 1200 W. An eighth map within these boundaries has
previously been published (Hornal, 1968). The area includes the Bear and Slave Structural Provinces and portions of the Churchill Structural Province and the Interior Plains. Gravity highs occur over the basic volcanics of the Yellowknife Group. A 30 mgal gravity high over the East Arm of Great
Slave Lake is associated with basic intrusions beneath or within the sediments of the Great Slave Supergroup. A steep gravity gradient, extending from Artillery Lake to the Western River at the boundary between the Slave and Churchill Structural Provinces, is attributed to a density contrast between
basement gneisses in the Churchill Structural Province and a large granite batholith in the Slave Province. A continuation of the Coppermine River High over large areas of western Victoria Island may indicate the northward extension of the basaltic flows of the Coppermine River Group beneath the
Paleozoic sediments. Local gravity lows in excess of 20 mgal are underlain by the Dubawnt sandstone and the sandstones of thé Parry Bay Formation.
Gravity measurements in northern Ontario
Authors: Gibb R A , McConnell R K
Published: March 2017

A total of 3,241 gravity stations, observed by the Dominion Observatory in the period 1949-1965, was used to compile ten Bouguer anomaly maps (1: 500, 000 scale) of northern Ontario. The major negative anomalies in the area are the Patricia Low which outlines an
area of multiple intrusions of granite and the Niskibi River Low whose source is also considered to be intrusive granite. Major positive anomalies are underlain by the Cape Henrietta-Maria basement arch in the Hudson Bay Lowlands and the Kapuskasing Belt - an ancient zone of probable crustal
rifting.
Polar Magnetic Substorms 03 - 06 Ut December 5,1968
Authors: Jansen van Beek G , Loomer E I
Published: March 2017

Magnetic effects associated with a westward travelling surge are illustrated by analysis of simple bays which occurred during three moderately weak substorms, 03 - 06 U.T. on December 5, 1968. South of the electrojet centre, at =
57°, magne tic effects are shown to be attributable solely to the auroral electrojet and i ts return curren ts. The azimuth of the Thule current vector, previously shown to reflecc the westward extension of the electrojet in the auroral oval, is used to identify individual substorms, to
estimate the rate of westward rotation of the oval, and to distinguish between trigger and main bays. Ail storms show a rapid decay and eastward swing in the final phase. The westward rotation of the oval, deduced from the azimuth of the Thule vector and the velocity of the D demarcation line, is
found to be highly irregular.
Effect of the solar cycle on magnetic activity at high latitudes
Authors: Loomer E I , Jansen van Beek G
Published: March 2017

Magnetic activity was investigated for the period 1957 to 1966, using mean hourly ranges measured in the principal horizontal component at four Canadian magnetic observatories, and the 3-hourly range Ap. The maximum of magnetic activity was found to follow the
solar activity maximum by about 2 years, occurring earliest in and north of the auroral zone. The maximum in each year occurred always in the auroral zone (Churchill). Enhancement of activity was greatest south of the zone (Meanook). A well defined summer maximum of activity was found in the polar
cap (Resolute Bay) for ail years. The annual variation for most years at auroral and sub-auroral stations showed 2 main maxima, with the dominant maximum occurring in summer or autumn. The daytime maximum of the diurnal variation tended to occur about an hour earlier during quiet years. At Churchill
and at Baker Lake, on the northern edge of the auroral zone, daytime and midnight peaks of activity were found to behave differently in the period from sunspot maximum to minimum, with midnight activity generally maximum about 2 years before sunspot minimum. Results seem to confirm Lassen's (1963)
mode! of an auroral zone made up of three separate zones.
On the deposition of sediments in craters
Authors: Beals C S , Hitchen A
Published: March 2017

Scale mode! experiments in sedimentation have been carried out using a small artificial crater with depth-to-diameter ratio corresponding to an impact crater a mile in diameter. The experiments were performed under deep water conditions using both mechanical and
chemical means of deposition. The results indlcated that the crater was obliterated after the deposition of a depth of sediments approximately three times the floor-to-rim depth of the crater. Since an impact crater of one mile diameter is about 800 feet deep, the experiments indicated that a crater
of this size would be obliterated by sediments of very moderate depth (2400 feet). Profile studies of the mode! crater made during the process of sedimentary deposition, have revealed interesting analogies wtth the Holleford crater (known to be an ancient meteorite crater filled with Paleozoic
sediments) and with the Mecatina crater, the origin and subsequent history of which are still uncertain.
A ferrite core fluxgate magnetometer
Authors: Primdahl F
Published: March 2017

A fluxgate magnetometer was designed and constructed to investigate the possibility of achieving the long-term stability required of the primary recording instruments at a standard magnetic observatory. An orthogonally-gated sensor is used, with a tubular ferrite
core. The
instrument was set up to measure total intensity, and compared with a proton precession magnetometer. The first test showed a drift of 2.5 gammas in 15 days. A second stability test gave an initial drift of 9 gammas over the first 20 days followed by random fluctuations of ±3.5 gammas over the
next 60 days.
Magnetic substorms, December 5, 1968
Authors: Loomer E I , Jansen van Beek G
Published: March 2017

Magnetograms from 26 auroral and polar cap observatories and total intensity data from Ice Island T3 were used in the analysis of an intense polar magnetic substorm which developed at 08 U.T. on December 5, 1968. The magnetic effects were interpreted as resulting
from a double substorm. The changing orientation of the equivalent current vector at Thule, close to the geomagnetic pole, was found to represent very closely the time development of the storm. Equivalent currents, calculated from both the horizontal and vertical components of the magnetic
perturbation vector, supported the Akasofu model of the auroral oval for the expansion and early recovery phases of the storm. Prior to the westward surge and following the end of the substorm there was some evidence for an SD-type (two-celled) current system, but the available data were
insufficient to verify this. A velocity of 1.1 km/sec for the westward surge and an expansion of the auroral oval by about 15° in the midnight sector were inferred from the magnetic effects. The direction of current flow in the oval was parallel to the auroral zone a few hours after local
midnight. The poleward contraction of the oval was very rapid in the recovery phase of the storm, with the storm centre returning to a position considerably east of the local midnight meridian. A class of intense substorms for the years 1962 - 1969 was identified from the occurrence on the Mould Bay
magnetograms of indented positive H bays around local midnight. These substorms occurred mainly in the winter and equinox, and were most numerous in the years immediately preceding sunspot minimum. No clear relationship was found between the occurrence and intensity of these substorms and the Dst
index.
A solid-state electrical recording magnetometer
Authors: Trigg D F , Serson P H , Camfield P A
Published: March 2017

A solid-state, three-axis recording magnetometer using fluxgate-type magnetic detectors is described. Design theory, circuit details, performance data and operating instructions are provided. Instrument specifications include an output sensitivity of 1 volt per
100 gammas, a -3 db gain roll-off at 3.5 Hz and Jess than 4 watts power consumption. A comparison of instrument performance when using
tuned magnetic detectors with performance when using untuned detectors indicates the superiority of the latter mode of operation.
Ophiolites of southern Quebec
Authors: Terrigeol A , Ewane Ebouele, S , Darveau M , Hébert C , Rivest L -P , Fortin D
Published: March 2017

The F.3stcrn Townships ultramafics of southern Quebec are of peat economic importance, for they host numerous chromite occurrences and all of the asbestos deposits exploited in the Asbestos and the Thetford-Black Lake areas.. Preliminary results from a systematic
field study recently conducted by the writer in the Thetford-Black Lake area suggest close spatia~ temporal, and genetic associations of the ultramafics (mainly peridotite, pyroxenite, and dunite) with one another and with other coarse-grained igneous rocks of gabbroic, dioritic, syenitic, and
granitic compositions, as well as with mafic to intermediate massive, pillowed, and fragmental volcanics. Hence, all these igneous rocks are interpreted as being part of so-called alpine-type ultramafic complexes, herein referred to as ophiolitic complexes or simply as ophiolites. The ophiolites of
southern Quebec are interpreted as being Lower Ordovician in age, for they occupy a consta.11 t stratigraphic position between the Caldwell group of Lower Ordovician or older age, on which they rest unconformably, and the St. Daniel wild flysch-type sediments of pre-Nonnanskill age. Field evidence
suggests that these ophiolitic complexes were extruded on a eugeosyndinal ocean floor, through a major zone of distensional fractures running along the northwestern margin of the complexes, as testified locally by a wide zone of amphibolitizcd Caldwell metagreywackes. Natural features strongly
suggest that liquid immiscibility is the sole process responsible for the magmatic differentiation that took place under a self formed roof of mafic volcanics in the submarine ophiolites of southern Quebec. Podifonn chromites are hence interpreted as primary features resulting from the coalescent
growth of cluomite-rich immiscible liquid droplets in an ultramafic melt.
Characteristics of magnetic disturbance at the Canadian Arctic observatories
Authors: Liu Z , Peng C , MacLean D A , De Grandpré, L , Candau J -N , Kneeshaw D
Published: March 2017

A selection bas been made of three classes of days at Resolute Bay* (geomagnetic latitude = 83°N ) and Baker Lake (geomagnetic latitude = 73.7°N) corresponding to "local disturbed", "local quiet", and "local very quiet" conditions at a time of
sunspot minimum. The disturbance daily variation bas been harmonically analysed, and the statistical properties of the cyclic disturbance waves examined.
Well inside the polar cap, it has been demonstrated that the form of the disturbance field remains substantially constant independent of the intensity of disturbance and the season, and can be well represented by 24-hour waves only. The 12-hour waves are only very partially persistent and higher
harmonie waves are random. The results from Resolute Bay are in excellent agreement with a simple atmospheric dynamo mode!, but modifications of the theory lead to contradictions, and the plausibility of the model is thus in doubt.
In the transitional region to the north of the auroral zone, diurnal disturbance is much more complex and variable, changing form as the disturbance increases. The persistent properties of the waves are discussed in connection with a number of theories of auroral zone magnetic disturbance, and it is
shown that none of these theories satisfactorily explain the observations.
Gravity measurements in southern Ontario
Authors: Moreau L , Thiffault E , Cyr D , Boulanger Y , Beauregard R
Published: March 2017

The results of over 1,000 gravity observations made in southern Ontario up to 1952 have been adjusted to a common datum and are presented in the form of tables of principal facts and two Bouguer anomaly maps. A general analysis of the anomaly pattern is given
which leads to the conclusion that the overlying Palaeozoic rocks have little effect on the regional gravity pattern and it is believed that the major anomaly trends are caused by belts of different densities in the Precambrian basement.
Gravity determinations in 1937 and 1938
Authors: Miller A H
Published: March 2017

Gravity anomalies corresponding to several methods of reduction are given for twenty-five stations recently established in Eastern Canada and Newfoundland. Of the larger anomalies the greater proportion for these stations is in Precambrian areas, where the more
pronounced are in every case negative. A map showing results for some 150 gravity stations, so far established in Canada, accompanies the report.
Canadian west coast earthquakes, 1952
Authors: Togun H , Homod R Z , Yaseen Z M , Abed A M , Dhabab J
M , Ibrahem R K , Dhahbi S , Rashidi M M , Ahmadi G , Yaïci W , Mahdi J
M
Published: March 2017

Local earthquakes recorded on the seismographs at Victoria, Alberni and Horseshoe Bay, British Columbia are tabulated, continuing a listing begun in 1951. Those twelve earthquakes which were felt are discussed separately. Epicentres are plotted on two maps, the
first showing 1952 epicentres on a map of southern British Columbia, the second showing epicentres for both 1951 and 1952 shocks on a map of southern Vancouver Island. While it is yet too early to draw definite conclusions there appears to be a tendency for the epicentres to lie along definite
lines, some of which coincide with known faults.
The establishment of primary gravimeter bases in Canada
Authors: Harrison S P , Villegas-Diaz R , Cruz-Silva E , Gallagher D , Kesner D , Lincoln P , Shen Y , Sweeney L , Colombaroli D , Ali A , Barhoumi C , Bergeron Y , Blyakharchuk T , Bobek P , Bradshaw R , Clear J L , Czerwi?ski S , Daniau A -L , Dodson J , Edwards K J , Edwards M
E , Feurdean A , Foster D , Gajewski K , Ga?ka M , Garneau M , Giesecke T , Gil Romera, G , Girardin M P , Hoefer D , Huang K , Inoue J , Jamrichová E , Jasiunas N , Jiang W , Jiménez-Moreno G , Karpi?ska-Ko?aczek M , Ko?aczek P , Kuosmanen N , Lamentowicz M , Lavoie M , Li F , Li J , Lisitsyna O , López-Sáez J A , Luelmo-Lautenschlaeger R , Magnan G , Magyari E K , Maksims A , Marcisz K , Marinova E , Marlon J , Mensing S , Miroslaw-Grabowska J , Oswald W , Pérez-Díaz S , Pérez-Obiol R , Piilo S , Poska A , Qin X , Remy C C , Richard P J
H , Salonen S , Sasaki N , Schneider H , Shotyk W , Stancikaite M , teinberga D , Stivrins N , Takahara H , Tan Z , Trasune
Published: March 2017

In 1952 the Dominion Observatory initiated a program to establish throughout Canada a network of well connected primary gravimeter base stations for the control and adjustment of existing and future gravimeter surveys. A total of two hundred and seyenty bases
occupied during the summer forms two separate networks, one in northern Canada and the other in southern Ontario and Quebec.
In the course of the survey gravimeter measurements were made at all available pendulum stations and the results show that the standard deviation of most pendulum determinations is about 1.2 mgals., and that the worst errors are in the measurements made before 1936 and in those throughout the
unsettled regions of northern Canada. The comparisons provided the calibration factor for the North American gravimeter to an accuracy of one part in a thousand.
The principal facts for all the gravimeter bases and the descriptions of the sites for twenty-four principal bases in Ontario and Quebec are given. The adopted values of gravity for the bases have random errors estimated to be 0.08 mgals. and 0.15 mgals. for the southern and northern networks
respectively. They may also contain systematic errors (0.5 mgals. maximum) due to the unreliability of the calibration of the gravimeter.
An improved bronze pendulum apparatus for relative gravity determinations
Authors: Hage S , Galy V V , Cartigny M J B , Heerema C , Heijnen M S , Acikalin S , Clare M A , Giesbrecht I , Gröcke D
R , Hendry A , Hilton R
G , Hubbard S M , Hunt J
E , Lintern D G , McGhee C , Parsons D R , Pope E L , Stacey C D , Sumner E J , Tank S , Talling P J
Published: March 2017

A bi-pendulum apparatus which uses bronze half-second pendulums has recently been developed by the Dominion Observatory for relative gravity measurements. Variable factors such as temperature, pressure, arc, time, etc., are precisely controlled so that ail
observations are made under identical conditions and no corrections need be applied to the observed periods. Results show that repeated swings with one pair of pendulums give observed periods (the mean of two pendulums) which are consistent to about ± 8 x 10-s seconds. For repeat occupations of
the same site the mean period for 3 or more swings with one pair of pendulums is consistent to about 5 x lQ---il seconds ( ±0.2 milligal). Observations with several pairs of pendulums give gravity differences that are accurate to the order of
±0.2 milligal. Gravity values obtained with this apparatus in 1957 are in close agreement with other pendulum and gravimeter values. The difference in gravity between the national reference piers in Ottawa, Canada, and Washington, D.C. has been evaluated at 501.50 milligals with a standard
deviation of 0.08 milligal. Relative to the adopted value of 980.62200 cm./sec2 for the Ottawa reference pier, the following gravity values have been obtained for important sites in the United States and Canada:
Washington (Commerce pier): g=980.12050 cm./sec.2
Vancouver (U.B.C. Physics Bldg.): g =980.93676 cm./sec2
Winnipeg (Dominion Public Bldg.): g=980.99483 cm./sec2
A probable meteorite crater of Precambrian age at Holleford, Ontario
Authors: Sanjari M , Mahmoudiniya M , Pirgazi H , Tamimi S , Ghoncheh M H , Shahriairi A , Hadadzadeh A , Amirkhiz B
S , Purdy M , de Araujo, E
G , Kestens L , Mohammadi M
Published: March 2017

A circular feature 1.46 miles in diameter and 100 feet deep located at longitude 76° 38' W and latitude 44° 27' N in southeastem Ontario has been investigated as a possible meteorite crater. Stereoscopic studies of aerial photographe in conjunction with
geological and geophysical investigations indicated the presence of a circular depression in Precambrian rock filled in and covered over by Palaeozoic sediments. Three diamond drill holes at distances of 1,400 feet, 2,500 feet and 3,750 feet from the centre were eunk to see whether the depth below
the sediments and the euh-surface structure were consistent with a meteoritic origin. The results showed a depth and profile close to those predicted for a meteorite crater of the observed diameter. Below the sediments a thickness of several hundred feet of
shattered and pulverized rock was found for which no adequate explanation has yet been found except that of meteorite impact and explosion.
Regional gravity survey of the Sverdrup Islands and vicinity
Authors: Baril X , Durand A -A , Srei N , Lamothe S , Provost C , Martineau C , Dunfield K , Constant P
Published: March 2017

The results of gravity surveys carried out in 1959 and 1960 are presented in the form of an anomaly map from which five profiles are drawn to analyze the major features of the Bouguer anomaly field . The observations are correlated with magnetic and geological
information and the interpretation of the gravity data is based on measured densities and densities computed from seismic velocities. On the basis of a density contr::\St of 0 .14 gm/ cc and an anomaly change of 63 mgals over a distance of 120 miles, the calculations indicate depths to basement
varying from 6, 800 feet near Isachsen to possibly 42, 000 feet near the axis of the Sverdrup Basin. A broad positive Bouguer anomaly over Peary Channel is partly attributed to a corresponding broad lens of basic rocks extending from an outcrop on the Fay Islands. A sharp negative anomaly over Peary
Channel north of the Dumbbell gypsum dome suggests a similar but larger submerged dome.
Gravity measurements in British Columbia
Authors: Stacey R A , Boyd J B , Stephens L E , Burke W E F
Published: March 2017

Gravity maps 152, 153, 154 and 155 correspond to the 1:1,000,000 scale N.T.S. mapsheets 82, 92, 93 and 103 and cover southwestern Alberta, southern British Columbia, the continental shelf off British Columbia and part of the adjacent Pacifie Ocean. The Bouguer
anomalies have been contoured at 10 mgal intervals and are based on gravity measurements every 12 to 15 kilometres on land and over the continental shelf, and ship-board gravity meter measurements over the Pacifie Ocean. The terrain corrections have been computed using either a rectangular or a
circular graticule, or a combination of both, depending on the scale of the available topographie
maps. The major change in the Bouguer anomaly field is from positive values over the Pacifie Ocean to negative values over the mountains of British Columbia - the actual change in the Bouguer anomalies being approximately -100 mgal per kilometre increase in the elevation. Over 90 per cent of this
observed relationship between the Bouguer values and the elevation of a region can be accounted for by assuming some form of isostatic compensation for the topography. In areas of subdued relief, such as the plains of Alberta, the interior plateau and the continental shelf of British Columbia, the
changes in the Bouguer anomalies can be related to density variations in the surface rocks.
To be sought first: The grandest of themes
Authors: Scholtz Jacob J.
Published: March 2017

No abstract available.
SPECIAL PURPOSE ALLOYS ("SUPERALLOYS")
Authors:   Metals Technical Committee
Published: March 2017

The data given in Tables 1–4 are typical values only and are not intended for design parameters. Mechanical properties of the special purpose alloys depend greatly upon processing variables and heat treatment. It is recommended that design data be obtained by actual testing or by consultation with the producers of the alloys.
Apoyo social percibido y su influencia en el desistimiento delictivo: Evaluación del rol institucional
Authors: Álvarez Vivar Luis , Bustamante Cárcamo Yonatan , Herrera Gálvez Elizabeth , Pérez-Luco Arenas Ricardo
Published: March 2017

La creciente preocupación por abordar la problemática de la delincuencia ha hecho emerger diversos enfoques que se han sumado a la discusión, siendo el desistimiento uno de los más relevantes en la actualidad. El presente estudiotuvo por objetivo evaluar la relación existente entre el tipo de apoyo social percibido, respecto de fuentes de apoyo institucionales y su influencia en el proceso de desistimiento de sujetos con patrones delictuales persistentes, que cumplen condena en un Complejo Penitenciario del sur de Chile. Con base en un diseño de tipo cualitativo descriptivo con casos múltiples, se utilizaron entrevistas individuales focalizadas para recoger la percepción de losentrevistados. Los resultados indican que los entrevistados manifiestan una valoración positiva de las instituciones, identificándolas como un espacio de beneficio en potencia, al que se accedería por la intermediación de un facilitador. No obstante, las instituciones no tendrían mayor influjo sobre el desistimiento, en tanto los sujetos se auto-responsabilizan de su opción delictual, restando impacto a las instituciones en sus trayectorias delictuales. Se discuten las posibles implicancias de los hallazgos sobre los procesos de intervención en esta población.
¿En qué medida predicen la mentalización del cuidador principal evaluada a los 12 meses y el nivel socioeconómico el lenguaje del niño(a) a los 30 meses?
Authors: Vargas Nelson , Morales María Paz , Witto Andrea , Zamorano Joaquín , Olhaberry Marcia , Farkas Chamarrita
Published: March 2017

Las competencias lingüísticas se desarrollan principalmente en los primeros años de vida del niño e influyen en la forma en que este se desenvuelve con su familia, pares, otros adultos y en contextos escolares, afectando significativamente la adquisición de aprendizajes formales e informales. La presente investigación estudia la influencia dela mentalización de los cuidadores principales y el nivel socioeconómico, sobre el nivel de desarrollo del lenguaje alcanzado por el niño a los 30 meses de edad. La muestra se compuso de 85 niños y sus cuidadores, de diferentes niveles socioeconómicos y residentes en la ciudad de Santiago de Chile. Se aplicó la Escala de Lenguaje del BayleyIII y un instrumento para medir la mentalización. Los resultados indican un efecto significativo de la mentalización de los adultos evaluada a los 12 meses y del nivel socioeconómico, sobre el lenguaje de los niños a los 30 meses de edad. El lenguaje receptivo a los 12 meses también es un factor predictor del mismo a los 30 meses, no así el lenguaje expresivo. Se discuten los resultados y sus implicancias.
Hacia la formulación de una teoría general de las teorías subjetivas
Authors: Catalán Ahumada Jorge René
Published: March 2017

El presente artículo tiene como objetivo avanzar en la formalización de una teoría general de las teorías subjetivas. Consiste en una propuesta que contiene los supuestos ontológicos, epistemológicos y metodológicos indispensables para sustentar la teoría, a partir de los cuales replantea los conceptos claves en uso y formula proposiciones básicas para enunciarla. Además de proporcionar soporte teórico en aspectos centrales para el estudio de las teorías subjetivas, el trabajo realizado tiene como propósitos ser de utilidad para la aplicación de la teoría en diversas áreas de la investigación psicológica, como también en la intervención para producir cambios en las teorías subjetivas y en cómo éstas orientan el comportamiento.
Actividades extraescolares durante la adolescencia: características que facilitan las experiencias óptimas
Authors: Calero Alejandra Daniela
Published: March 2017

Las actividades extraescolares se han asociado al desarrollo positivo durante la adolescencia. Las experiencias óptimas (EO) se caracterizan por la implicación por motivación intrínseca en actividades en las que se experimenta un gran disfrute; estas experiencias también se han asociado al desarrollo personal y al compromiso con las actividades. Objetivo: estudiar las características de la participación en actividades extraescolares que se asocian con la ocurrencia de EO en población adolescente de la Ciudad Autónoma de Buenos Aires, Argentina. Método: Se administró el Inventario Breve de Experiencias Óptimas a 300 adolescentes que participaban de actividades extraescolares. Resultados: Se observó que el tiempo dedicado a la actividad y la antigüedad de la práctica afectaba el nivel de EO, a diferencia del hecho de tener un profesor, de realizar la actividad con amigos o del tipo de actividad que no pareció afectar el nivel de EO. Conclusión: A la luz de los resultados resultan más importantes factores relacionados con la dedicación personal a la actividad, por encima de los factores vinculados a aspectos sociales o la naturaleza de las actividades.
Emociones y migración: Las vivencias emocionales de las hijas y los hijos que se quedan en origen
Authors: Piras Gioia
Published: March 2017

La migración internacional se caracteriza actualmente por la posibilidad de transnacionalizar las relaciones entre familias y hogares dispersos geográficamente, permitiendo así una circulación de cuidados, afectos y emociones a nivel global que, a pesar de la distancia física, conectan origen y destino. El propósito del artículo es dar a conocer algunos resultados de investigación cuyo trabajo de campo de corte cualitativo, se ha desarrollado en Perú con adolescentes cuyas madres y/o padres emigraron al extranjero, habiéndose producido el retorno en algunos casos. El objetivo es conocer su universo emocional en relación a la partida y ausencia del progenitor, a las relaciones y vivencias afectivas en la distancia y al "reemplazo" emocional y de cuidado por parte de otra/s persona/s. Entre los resultados destaca la experimentación de sentimientos ambivalentes, el sobre esfuerzo personal para reconfigurar con el tiempo su cotidianidad y emociones, la importancia de las redes de cuidados y el mantenimiento de una comunicación constante con el progenitor emigrado. Se concluye que las relaciones entre infancia/maternidad/paternidad transnacional, se construyen dialécticamente entre la subjetividad de las agencias y los marcos socioculturales que las ajustan.
La discapacidad: percepciones de cuidadores de niños, niñas y jóvenes en situación de discapacidad.
Authors: Giaconi Moris Carolina , Pedrero Sanhueza Zoia , San Martín Peñailillo Pamela
Published: March 2017

La discapacidad es una construcción sociocultural e histórica, que impacta a las personas en situación de discapacidad y a sus cuidadores. El objetivo de la investigación fue describir y analizar las percepciones sobre discapacidad de cuidadores/as de niños/as y jóvenes en situación de discapacidad. Para ello, se realizó una investigación cualitativa con grupos focales y un análisis de contenido. Del análisis emergieron tres categorías principales: significados en torno al concepto de discapacidad, dificultades relacionadas a la discapacidad, y planteamientos para solucionar las dificultades. La discapacidad fue asociada al modelo social y biopsicosocial, percibiéndose principalmente como una situación de diferencia. Las dificultades asociadas a la discapacidad en los ámbitos de la familia, sociedad, accesibilidad, transporte, sistema educativo y salud, son coincidentes con las reportadas por la literatura internacional. Los participantes manifiestan una serie de planteamientos para mejorar las dificultades, entre ellas la visibilización de la discapacidad, un rol activo de parte de las propias personas en situación de discapacidad y sus cuidadores, y una necesaria responsabilización por parte del Estado.
Migración y escuela: Análisis documental en torno a la incorporación de inmigrantes al sistema educativo chileno
Authors: Jimenez Vargas Felipe , Aguilera Valdivia Maria , Valdés Morales René , Hernández Yáñez María
Published: March 2017

Una de las principales debilidades de los programas de acogida a estudiantes inmigrantes en escuelas chilenas, radica en la ausencia de lineamientos educativos que oriente el trabajo de gestionar y organizar su incorporación. En este estudio se presentan los resultados de un análisis documental en torno a la escolarización de estudiantes inmigrantes. Mediante un análisis de contenido semántico a 82 fuentes documentales, se construyeron categorías explicativas permitiendo identificar ciertos patrones, tensiones e hilos conductores. Los resultados analizan los principales ámbitos de acción (ingreso y matriculación), la naturaleza de los documentos (informativa e instructiva) así como los enfoques predominantes en torno a la diversidad cultural (enfoque de derechos y multiculturalidad), evidenciando de esta manera el estado actual así como los desafíos existentes para el desarrollo de estrategias de acogida que promuevan una mayor equidad y justicia educativa. Las discusiones giran en torno a la necesidad de expandir el trabajo hacia otros ámbitos, de promover nuevos enfoques hacia la diversidad cultural, a través de documentos que puedan asesorar y orientar el trabajo realizado por las propias comunidades educativas.
Enhancement of Solubility of Artemisinin and Curcumin by Co-Solvency Approach for Application in Parenteral Drug Delivery System
Authors: Thakkar Vaishali Tejas , Dhankecha Rachana , Gohel Mukesh , Shah Purvi , Pandya Tosha , Gandhi Tejal
Published: March 2017

The aim of present study was to enhance solubility of poorly soluble antimalarial drugs, Artemisinin and Curcumin by adopting  Co-solvency approach and to develop parenteral aqueous injectable solution. Solubility enhancement of both drugs was achieved using co-solvency approach. The parenteral injection was prepared by using a ternary co-solvent system which comprised of benzyl alcohol, PEG 400 and tween 80 (as surfactant). Solubility of Artemisinin and Curcumin was found to be higher in benzyl alcohol and PEG 400. Co-solvent system comprising of  benzyl alcohol, PEG 400 and tween 80 in volume fraction of 0.3, 0.9 and 0.2 respectively showed the minimum required solubility of Artemisinin (90 mg per ml) and Curcumin (180 mg per ml). The parenteral injectable formulation was characterized for pH, clarity, viscosity, osmolarity and sterility and the stated parameters were found in acceptable range.  In-vitro erythrocyte toxicity study showed that intravenous administration of optimized formulation will be safe. In-vitro antimalarial assay indicated that efficacy of artemisinin and curcumin parenteral formulation was greater than quinine and combination of Artemether and Lumefantrine. Stability study of the optimized batch showed no change in physical and chemical characteristics. Based on study, one can conclude that Artemisinin and Curcumin can be successfully formulated as parenteral injectable formulation by co-solvency approach for the effective treatment of malarial infection
Finding Place in Higher Education: An Epistemological Analysis
Authors: Crooks Shelagh M
Published: March 2017

Though the topic of student transition into the culture and practices of higher education has been the subject of considerable investigation by scholars, the transition literature has been largely silent on the epistemological challenges that new students face in the context of the university classroom. The purpose of this paper is to look at student transition from this unique perspective. The paper reviews recent empirical research in the area of “personal epistemology,” which establishes the facts regarding what students actually believe about knowledge and knowing as they enter university. The paper also provides an analysis of the epistemological beliefs of university teachers, and the influence that these beliefs have on the teachers’ educational practice. A key issue discussed here is the conflict between students’ conception of knowledge (as certain and possessed by authorities) and their teachers’ conception of knowledge (as something constructed through a process of evidential inquiry). Finally, the impact of this epistemological conflict on students’ ability to make sense out of, and find their place in, the new and different learning environment of the university is considered.
Bien que le sujet de la transition des étudiants dans la culture et la pratique de l’enseignement supérieur ait fait l’objet de nombreuses analyses de la part de chercheurs universitaires, la documentation sur la transition est en grande partie muette sur les défis épistémologiques auxquels les nouveaux étudiants font face dans le contexte de la salle de classe universitaire. L’objectif de cet article est d’examiner la transition des étudiants à partir de cette perspective unique. Dans cet article, nous examinons la recherche empirique récente effectuée dans le domaine de « l’épistémologie personnelle », qui établit les faits en ce qui concerne ce que les étudiants pensent réellement concernant la connaissance et l’utilisation de la connaissance alors qu’ils font leur entrée à l’université. L’article présente également une analyse des croyances épistémologiques des professeurs d’université ainsi que l’influence que ces croyances ont sur la pratique éducationnelle de ces professeurs. Une question clé discutée dans cet article est le conflit entre la conception qu’ont les étudiants de la connaissance (quelque chose de certain que les autorités possèdent) et la conception de la connaissance qu’ont leurs professeurs (quelque chose qui se construit grâce à un processus d’enquête probante). Pour finir, l’article examine également l’impact de ce conflit épistémologique sur l’aptitude des étudiants à donner du sens et à trouver leur place dans leur nouvel environnement d’apprentissage si différent qu’est l’université.
Perceived Benefits of an Undergraduate Degree
Authors: Norton Cole , Martini Tanya
Published: March 2017

Canadian university students tend to endorse employment-related reasons for attending university ahead of other reasons such as personal satisfaction or intellectual growth. In the present study, first- and fourth-year students from a mid-sized Canadian university reported on the benefits they expected to receive from their degree and rated their relative importance. These open-ended responses suggested that both groups of students placed a greater emphasis on benefits related to career preparation and economic advancement than those associated with learning and self-improvement. However, when asked to evaluate the importance of a comprehensive list of degree-related benefits both groups of students endorsed the value of many of them, including those related to learning and self-improvement. Our results suggest the importance of methodology in gathering data about this issue, and we consider them in light of current concerns with helping students to understand the full value of their degree.
Les étudiants des universités canadiennes ont tendance à accepter les raisons qui se rapportent à l’emploi pour justifier les études universitaires avant d’autres raisons telles que la satisfaction personnelle ou la croissance intellectuelle. Dans la présente étude, des étudiants de première année et de quatrième année d’une université canadienne de taille moyenne ont indiqué les avantages qu’ils s’attendaient à obtenir avec leur diplôme et les ont classés par ordre d’importance. Ces réponses ouvertes suggèrent que les deux groupes d’étudiants ont attribué une plus grande importance aux avantages liés à la préparation de leur carrière et à l’avancement économique qu’à ceux liés à l’apprentissage et à l’amélioration personnelle. Toutefois, quand on leur a demandé d’évaluer l’importance d’une liste complète d’avantages liés à l’obtention d’un diplôme, les deux groupes d’étudiants ont reconnu la valeur de plusieurs d’entre eux, y compris ceux qui se rapportent à l’apprentissage et à l’amélioration personnelle. Nos résultats suggèrent que la méthodologie employée pour recueillir les données sur cette question est importante et nous les prenons en considération à la lumière des préoccupations actuelles pour aider les étudiants à comprendre la valeur globale de leur diplôme.
ASPECTOS SOCIOECONÔMICOS DOS PROPRIETÁRIOS RURAIS DO MUNICÍPIO DE SÃO JOÃO DO CARIRI - PB
Authors: Araujo Kallianna Dantas , Dantas Renilson Targino , Andrade Albericio Pereira de , Parente Henrique Nunes , Vicente de Barros Maria José
Published: March 2017

Com o objetivo de levantar informações junto aos proprietários rurais do município de São João do Cariri - PB sobre os aspectos sociais como situação escolar, fonte de renda familiar, recursos econômicos e abastecimento de água, bem como aspectos econômicos como produção agropecuária aplicou-se questionários aos proprietários rurais localizados em São João do Cariri - PB. Foram aplicados 357 questionários aos proprietários de 60 propriedades rurais de São João do Cariri, seguindo a nomenclatura da Secretaria de Saúde do município, através do Programa de Agentes Comunitários de Saúde. Foram plotados as coordenadas geográficas (latitude e longitude) de cada propriedade rural onde foi aplicado o questionário para a confecção do mapa cartográfico. A atividade socioeconômica da maioria da população da zona rural é a agrícola com produção de culturas tradicionais como milho e feijão para consumo familiar. A produção pecuária é reduzida, com predomínio de rebanhos bovino, ovino e caprino sem padrão de raça definida. O cultivo de plantas forrageiras da caatinga como lavoura xerófila regular, em áreas de déficit hídrico, pode ser a opção mais vantajosa para a agricultura do semiárido.
ANÁLISE DA FRAGILIDADE AMBIENTAL NO MUNICÍPIO DE TAMBOARA – PR: APLICAÇÃO E ESTUDO COMPARATIVO DE DUAS METODOLOGIAS?
Authors: Santos Rafael Marques dos , Nóbrega Maria Teresa de , Paiva Raniere Garcia , Silveira Hélio
Published: March 2017

Os mapas de fragilidade e/ou vulnerabilidade ambiental são ferramentas que fornecem importantes subsídios para a gestão territorial e a elaboração do Zoneamento Ecológico - Econômico (ZEE), visando mostrar, em termos de intensidade e de distribuição espacial, a susceptibilidade do meio físico, considerando-se os fatores geológicos, geomorfológicos e pedológicos, e as suas respostas às pressões antrópicas. O objetivo principal do trabalho é determinar e mapear a fragilidade ambiental na área do município de Tamboara – PR com a aplicação de duas metodologias, realizando um estudo comparativo entre elas. As duas metodologias adotadas têm por fundamento o conceito da Ecodinâmica que, a partir de uma abordagem sistêmica, propõe uma classificação fundamentada no estado de equilíbrio dinâmico do meio (estabilidade-instabilidade morfodinâmica). Os procedimentos operacionais envolvidos para a obtenção dos mapas de fragilidade incluem análises do relevo, solos, geologia, clima e uso do solo. A análise integrada possibilita a obtenção de produtos síntese que expressam diferentes graus de fragilidade do ambiente em função das suas características genéticas e das condições geradas pelas formas de uso e ocupação.
DISTRIBUIÇÃO ESPACIAL DE ELEMENTOS RADIOATIVOS E METAIS PESADOS NO LIXÃO DESATIVADO DA CIDADE DE LAGES-SC?
Authors: BECEGATO Valter Antonio , WALTER Juliano de Andrade , Rafaeli NETO Silvio Luiz , Pereira CABRAL João Batista , MARCON Amanda Koche , MIRANDA Letícia , SPIAZZI Fábio
Published: March 2017

O lixão desativado do município de Lages está localizado entre as coordenadas 27º46´15,38’’S e 50º15´10,92’’O em uma área de 48.000 m2 com extensa rede de drenagem, cujo entorno encontram-se áreas de proteção permanente e reflorestamentos com pinus. Coletou-se amostras de solos compostas entre as profundidades de 0-20 e 20-40 cm georreferenciadas para determinação dos seguintes metais pesados: Cádmio, Cromo, Níquel, Chumbo e Mercúrio, cujas amplitudes apontaram valores em (mg Kg-1) respectivamente:0,2-0,2; 0,8-2,1; 03,12; 0,4-22 e 0,02-0,06. Efetuou-se a aquisição de dados gamaespectrométricos com o aparelho GS-512 em uma malha georreferenciada em 74 pontos para os seguintes elementos radioativos que apresentaram amplitudes de valores: 40K ( 0,4 a 2,4%); 232Th (2,2 a 12,9ppm) e 238U (0,8 a 2,5ppm).
TOMOGRAFIA ELÉTRICA-2D APLICADA NO LIXÃO DO MUNICÍPIO DE SAUDADE DO IGUAÇU-PR
Authors: Becegato Valter Antonio , Stefanato Rodoilton , Fonseca Ferreira Francisco José , Pereira Cabral João Batista , Becegato Vitor Rodolfo
Published: March 2017

A presente pesquisa é oriunda de trabalhos geofísicos realizados para a Prefeitura Municipal de Saudade do Iguaçu no estado do Paraná-Brasil, objetivando obter a possível pluma de contaminação do depósito de lixo desativado do referido município. Tais ensaios envolveram a aplicação do método geofísico da eletrorresistividade através do arranjo dipolo-dipolo. A área situa-se na bacia do Paraná, inserida na formação Serra Geral, constituídas por rochas magmáticas.
ÁGUAS SUBTERRÂNEAS, ATIVIDADES POTENCIALMENTE CONTAMINANTES E O APORTE DO GEOPROCESSAMENTO NA DEFINIÇÃO DE CONFLITOS
Authors: Marion Fabiano André
Published: March 2017

O artigo tem como objetivo identificar as atividades potencialmente contaminantes, com o apoio do geoprocessamento, e confrontá-las com a vulnerabilidade natural das águas subterrâneas no Campus da Universidade Federal de Santa Maria (UFSM) – RS. Nas avaliações ambientais por geoprocessamento, identificou-se que a maioria das atividades potencialmente contaminantes ocorrem sobre áreas de alta e média vulnerabilidade natural à contaminação, ou seja, são 85 hectares com eminente risco de contaminação. Esses resultados servirão de base a planos de conservação das águas subterrâneas, integrados às diretrizes do Plano Diretor do Campus Universitário da UFSM.
DETERMINAÇÃO ALTIMÉTRICA E MODELO DIGITAL DE TERRENO PARA A GELEIRA WANDA, ILHA REI GEORGE, POR SISTEMA DE POSICIONAMENTO GLOBAL E NIVELAMENTO TRIGONOMÉTRICO
Authors: Rosa Da Kellem da
Published: March 2017

O presente trabalho visa determinar altitudes ortométricas e a geração de Modelo Tridimensional de Superfície na área da geleira Wanda localizada na ilha Rei George, Península Antártica. Devido à dificuldade de acessibilidade logística destes ambientes, coletas temporais de dados de Modelos Numéricos do Terreno permitem obter dados volumétricos das geleiras para análises temporais, inferência do sentido de fluxo de gelo e ainda mudanças na dinâmica glacial. Dados de GPS obtidos pelo método relativo estático rápido com um receptor topográfico de simples freqüência (GTRA) foram pós-processados para a correção diferencial e as coordenadas altimétricas relativas ao elipsóide foram transformadas para o sistema topográfico local através do cálculo da ondulação geoidal com base no Modelo Geopotencial EGM96. Com os dados obtidos foi gerado o modelo tridimensional de superfície para a geleira Wanda, o qual indica um perfil com uma pendente em direção a área frontal. Esta pendente pode estar relacionada à topografia do embasamento rochoso e a perda de massa de gelo pela geleira nas ultimas décadas. Uma superfície de maior declividade, verificada com o modelo, pode proporcionar uma aceleração local da velocidade de fluxo da geleira Wanda.
TRANSPORTE URBANO EM DRESDEN (ALEMANHA) E UBERLÂNDIA (BRASIL) – UMA ANÁLISE SOB A PERSPECTIVA DA MOBILIDADE URBANA SUSTENTÁVEL
Authors: Silva Júnior Sílvio Barbosa da , Godoi Cintia Neves , Ferreira William Rodrigues
Published: March 2017

Analisar o transporte público e o espaço urbano no Brasil, especialmente em Uberlândia, e compará-lo com o caso de Dresden na Alemanha se constitui o objetivo deste artigo. Para dar conta dessas relações vamos buscar dados e paisagens de ambas as áreas urbanas, particularmente de suas áreas centrais, para compreender as características de seus sistemas públicos de transporte, analisando as realidades urbanas, para identificar qual é o papel do transporte público nos diferentes casos.
RESÍDUOS SÓLIDOS ORGÂNICOS PROVENIENTES DA EXTRAÇÃO DE OLEAGINOSAS PARA BIODIESEL E SEUS POTENCIAIS DE USO
Authors: Gentil Ravena Moraes , Valdés Serra Juan Carlos , Castro Renato Brito de
Published: March 2017

O presente artigo apresenta uma revisão sobre potencialidades da utilização de resíduos sólidos orgânicos da indústria de extração de óleo vegetais de dendê, soja, mamona e girassol; para a produção de biodiesel. O cenário atual e futuro da produção de biodiesel no Brasil indicam um crescimento significativo do setor até o ano de 2020. Com a implantação da obrigatoriedade de proporções maiores deste combustível no óleo diesel, teremos conseqüentemente, a geração de uma grande quantidade de descartes sólidos orgânicos com grande potencial e possibilidades de utilização no mercado.Esses resíduos sólidos orgânicos podem representar ganhos econômicos na região onde serão gerados. Há necessidade de mais investimento em pesquisa sobre a utilização destes produtos, porém estudos realizados já mostram seu potencial para a geração de renda e desenvolvimento não somente para a cadeia produtiva do biodiesel, mas para toda a região onde estão inseridos.
REGIÃO E REGIONALIZAÇÃO: ANÁLISE CRÍTICA DAS METODOLOGIAS APLICADAS NA FORMULAÇÃO DA POLÍTICA NACIONAL DE DESENVOLVIMENTO REGIONAL (PNRD) DO GOVERNO LULA DA SILVA NO BRASIL
Authors: Bringel Fabiano Oliveira
Published: March 2017

A região como conceito-chave na geografia vem sendo estudada ao longo de sua trajetória como ciência. Suas concepções e métodos subjacentes sempre se apresentaram diversos e controversos. Geralmente, na literatura geográfica, observamos um levantamento das concepções de região nas diversas escolas geográficas e seus diferentes métodos de regionalização balizados pelo contexto histórico que estão inseridas. Neste artigo, foram realizadas, abordagens pontuais sobre a definição de região e regionalização, a partir de uma introdução sobre região e positivismo, centrando a análise na abordagem sistêmica na Nova Geografia.