bluuebunny/crossref_metadata_2025 huggingface dataset:
Keynes, la politique commerciale et la coopération commerciale internationale
Authors: Schwob Claude
Published: March 2016

En économie internationale, Keynes est connu pour avoir développé un projet de coopération monétaire et financière internationale. Moins connue est sa contribution dans le domaine du commerce international. Une lecture hâtive des travaux de Keynes sur ce sujet laisse à penser que ses idées quant à la place qui revient à la discrétion et à la négociation dans la définition de la politique commerciale d’un pays sont versatiles. L’objet de cet article est de mettre en évidence la logique qui soustend l’évolution des idées de Keynes dans ce domaine.
Rawls et l’économie : les leçons des archives de Harvard
Authors: Hawi Rima
Published: March 2016

L’objectif de ce texte est de montrer que c’est à partir de l’économie que Rawls pose les premiers fondements de la justice comme équité, qu’il en identifie les principaux éléments. Pour cela, nous nous appuierons sur une étude de ses travaux publiés, mais également sur un travail de recherche dans ses archives à Harvard. De manière étonnante, Rawls ne mettra jamais en avant le rôle qu’a joué l’économie dans sa théorie, multipliant plutôt les références aux philosophes, dont il souligne régulièrement l’influence sur son œuvre. Il s’agit donc ici d’un travail de reconstruction.
Ethical aspects of insect production for food and feed
Authors: Gjerris M. , Gamborg C. , Röcklinsberg H.
Published: March 2016

Given a growing global human population and high pressures on resources, interest in insects as a source of protein for human food (entomophagy) and for animal feed is growing. So far, the main issues discussed have been the embedded technical challenges of scaling up the production. The use of insects as a major human food and feed source is thought to present two major challenges: (1) how to turn insects into safe, tasty socially acceptable feed and food; and (2) how to cheaply yet sustainably produce enough insects? Entomophagy, however, as any utilisation of animals and the rest of nature also entails ethical issues – both regarding the impact on human health, the environment and climate change and regarding production methods such as intensification and biotechnology. The aim of the paper is to give a systematic overview of ethical aspects embedded in the notion of utilising insects as protein providers in the Western food and feed production chains. We identify five areas where ethical questions are especially pertinent: environmental impact, human and animal health, human preferences and social acceptability, animal welfare and finally broader animal ethics issues. Especially the latter two are more scantly dealt with in the literature. This part of the review will therefore contain suggestions for ethical issues that should be examined closer.
A review of the efficacy of mycotoxin detoxifying agents used in feed in light of changing global environment and legislation
Authors: Wielogórska E. , MacDonald S. , Elliott C.T.
Published: March 2016

In the recent years, mycotoxins have undoubtedly gained a keen interest of the scientific community studying food safety. The main reason is their profound impact on both human and animal health. International surveys reveal a low percentage of feed samples being contaminated above permitted/guideline levels, developed to protect consumers of animal derived products. However, the deleterious impact of feed co-contaminated at low levels with numerous both known and regulated as well as novel mycotoxins on producing animals has been described. Associated effects on agro-economics world-wide include substantial pecuniary losses which are borne by the society as a whole. Even though good agronomic practice is thought to be the most effective way of preventing animal feed contamination, the EC have recognised the need to introduce an additional means of management of feed already contaminated with low-levels of mycotoxins to alleviate detrimental effects on agricultural production efficiency. This review discusses types of feed detoxifying agents described in scientific literature, their reported efficacy in bothin vitro andin vivo systems, and comparison with available commercial formulations in the light of increasing knowledge regarding mycotoxin prevalence in the changing global environment.
Presencia de Therioaphis bonjeaniae Hille Ris Lambers & van den Bosch, 1964 (Hemiptera, Aphidoidea, Drepanosiphidae) en Portugal continental
Authors: Sousa-Silva Carlos Roberto , Albano Ilharco Fernando
Published: March 2016

Se actualiza la distribución en la Península Ibérica del pulgón Therioaphis bonjeaniae Hille Ris Lambers & van den Bosch, 1964, citado por primera vez en Portugal Continental. Se aporta también información sobre caracteres morfométricos de las muestras estudiadas.
La piraterie atlantique au fondement de la construction des souverainetés coloniales européennes
Authors: Hennessy-Picard Michael
Published: March 2016

Figure ambiguë, archétype du guerrier privé, le pirate est généralement l’emblème de la résistance à l’autorité étatique. Or, cette image obscurcit le rôle paradoxal du pirate maritime en tant qu’agent trouble de l’État. Avant de devenir le symbole de l’insubordination anarchiste, le pirate a servi les desseins du colonialisme européen. Les actes de piraterie ont historiquement participé à la construction matérielle et à « l’organisation criminelle » des États européens. Entre 1500 et 1713, les actes de piraterie, loin d’être universellement combattus, ont systématiquement été instrumentalisés par les monarques afin d’affaiblir d’autres souverains ennemis ou concurrents sur le plan économique. Ce n’est qu’une fois l’équilibre des puissances maritimes atteint que la piraterie sera progressivement combattue par la communauté des États européens. La piraterie deviendra alors la catégorie juridique résiduelle par excellence permettant de regrouper, d’occulter et d’écarter les obstacles au commerce des Empires coloniaux européens. La piraterie fut donc instrumentalisée par les États, puis criminalisée pour légitimer les politiques répressives de ces mêmes États.
VIWA: COMPUTER INTERFACE DEVICE FOR PARALYZED PEOPLE USING BREATH PRESSURE
Authors: Bodaghi Taher , Karami Mohammad Reza , Jazayeriy Hamid
Published: March 2016

The VIWA system has been developed to provide computer access for paralyzed people. The system detects the users’ breath pressure with an electrical board and translates it to the location coordinates in computer display screen. The user navigates mouse cursor by specifying the coordination of x and y. A graphical keyboard has been designed to provide text-entry ability with text-to-speech embedded feature. The system is platform-independent and can be run in every client side devices.

A group of 10 people without disabilities tested the VIWA and quickly learned how to use it to spell out messages or interact with computer. Ten people with disabilities also tried the system. The measured mistakes and time are showing that the user is capable to control the mouse cursor with the accuracy of 99.8%. The average time of experiment shows that users can reach their speed of writing to 7.9 words/min after two attempts.
Behavioral Study of Drosophila Fruit Fly and Its Modeling for Soft Computing Application
Authors: Singh Tapan Kumar , Das Kedar Nath
Published: March 2016

Most of the problems arise in real-life situation are complex natured. The level of the complexity increases due to the presence of highly non-linear constraints and increased number of decision variables. Finding the global solution for such complex problems is a greater challenge to the researchers. Fortunately, most of the time, bio-inspired techniques at least provide some near optimal solution, where the traditional methods become even completely handicapped. In this chapter, the behavioral study of a fly namely ‘Drosophila' has been presented. It is worth noting that, Drosophila uses it optimized behavior, particularly, when searches its food in the nature. Its behavior is modeled in to optimization and software is designed called Drosophila Food Search Optimization (DFO).The performance, DFO has been used to solve a wide range of both unconstrained and constrained benchmark function along with some of the real life problems. It is observed from the numerical results and analysis that DFO outperform the state of the art evolutionary techniques with faster convergence rate.
MCOQR (Misuse Case-Oriented Quality Requirements) Metrics Framework
Authors: Banerjee Chitreshh , Banerjee Arpita , Pandey Santosh K.
Published: March 2016

In today's information age, software is attacked deliberately resulting in breach of security & people's trust. These malicious attacks provide harm to individuals, organizations, and the world at large. The attacker targets vulnerabilities to exploit the software. The chapter highlights the importance of security metrics which is comprehensive in nature and easily implementable. It also emphasis on the early implementation of security metrics i.e., from the requirements elicitation phase of requirement engineering stage so that a comprehensive and complete set of security requirements could be defined with their countermeasure to develop a secured software. For development of security metrics a framework has been proposed using use case and misuse case tree modeling. The proposed work may help the Software Security Team to identify and analyse the potential vulnerabilities and associated threats which may be exploited by the attacker to harm the system well in advance in the requirements engineering phase thereby balancing the security using misuse cases modeling.
Performance Analysis of DE over K-Means Proposed Model of Soft Computing
Authors: Patidar Kapil , Kumar Manoj , Kumar Sushil
Published: March 2016

In real world data increased periodically, huge amount of data is called Big data. It is a well-known term used to define the exponential growth of data, both in structured and unstructured format. Data analysis is a method of cleaning, altering, learning valuable statistics, decision making and advising assumption with the help of many algorithm and procedure such as classification and clustering. In this chapter we discuss about big data analysis using soft computing technique and propose how to pair two different approaches like evolutionary algorithm and machine learning approach and try to find better cause.
Wavelet Transform-Based Soft Computational Techniques and Applications in Medical Imaging
Authors: Urooj Shabana , Singh Satya P.
Published: March 2016

The aim of this chapter is to highlight the biomedical applications of wavelet transform based soft computational techniques i.e. wavenet and corresponding research efforts in imaging techniques. A brief introduction of wavelet transform, its properties that are vital for biomedical applications touched by various researchers and basics of neural networks has been discussed. The concept of wavelon and wavenet is also discussed in detail. Recent survey of wavelet based neural networks in medical imaging is another facet of this script, which includes biomedical image denoising, image enhancement and functional neuro-imaging, including positron emission tomography and functional MRI.
A Language and a Space
Authors: Alabi Halimat I.
Published: March 2016

Visualizations are quickly becoming an integral part of learning analytics for knowledge discovery, sensemaking, and insight. Empowering educators and learners, visualizations make data graphically accessible through a range of perceptual modes. As the embodiment of learners' data, visualizations give them a thing to reflect upon, potentially arriving at insights they may otherwise not have. Visualizations aid educators in behavioral monitoring, formative feedback provision, and strategic intervention. They support learners' motivation and self-regulation, focusing attention on the behaviors associated with academic success. As a mechanism for joint knowledge work, visualizations are collaboratively used to produce, translate, and facilitate communication around shared learning artifacts. This visualization survey explores disposition, predictive, semantic, discourse, collaborative and social learning analytics tools within a variety of learning spaces. In their entirety, they represent both the historical and the novel, from conceptual designs to empirically validated tools.
Personalising the Pathway
Authors: Velliaris Donna M.
Published: March 2016

The Eynesbury Institute of Business and Technology (EIBT) is one of a growing number of private providers partnering with universities to establish pre-university pathway programs worldwide. As a second chance for prospective students who do not meet initial Australian Higher Education (HE) entrance requirements, pathway providers attract students early in their tertiary lifecycle to secure their destination. EIBT has an abundance of empirically-rich and ‘big' data that may be used to find pedagogically useful indicators, predictors and recommendations for teaching and learning advancement by careful evaluation of the findings. The work of ‘researchers' often resides in isolation from that of ‘educators', whereby the ‘gap' may reflect a poor-cycle of communication and interaction between empirical studies and praxis. This chapter is limited to a select and somewhat brief discussion of specific uses of Learning Analytics (LA) in the context of EIBT and related sense-making and predicting of student performance.
An Introduction to Micromechanics
Authors: Yu Wenbin
Published: March 2016

This article provides a brief introduction to micromechanics using linear elastic materials as an example. The fundamental micromechanics concepts including homogenization and dehomogenization, representative volume element (RVE), unit cell, average stress and strain theories, effective stiffness and compliance, Hill-Mandel macrohomogeneity condition. This chapter also describes the detailed derivations of the rules of mixtures, and three full field micromechanics theories including finite element analysis of a representative volume element (RVE analysis), mathematical homogenization theory (MHT), and mechanics of structure genome (MSG). Theoretical connections among the three full field micromechanics theories are clearly shown. Particularly, it is shown that RVE analysis, MHT and MSG are governed by the same set of equations for 3D RVEs with periodic boundary conditions. RVE analysis and MSG can also handle aperiodic or partially periodic materials for which MHT is not applicable. MSG has the unique capability to obtain the complete set of 3D properties and local fields for heterogeneous materials featuring 1D or 2D heterogeneities.
Increase in Corrosion Resistance of Commercial Pure Titanium by Anode Plasma Electrolytic Nitriding
Authors: Belkin Pavel N. , Kusmanov Sergei A. , Belkin V.S. , Parfenyuk V.I.
Published: March 2016

Features of the anode electrolytic plasma processing of commercial pure titanium and its alloys in aqueous solutions of ammonium chloride and ammonia additives are studied. It is identified that structure of modified layer contains an external TiO2 or TiO layer with micropores of up to 100 nm and a diffusion sub-layer after nitriding in the solution with the ammonia addition. Some increase in the surface microhardness is found. The plasma electrolytic treatment of titanium makes it possible to enhance its corrosion resistance by short-term (5 min) saturation with nitrogen at 750 °C in an electrolyte containing 5% ammonia and 10% ammonium chloride. The oxide coating formed during the anodic treatment has a positive effect on the corrosion resistance of titanium and results in reduce of the corrosion rate by two orders under continuous tests. Saturation of titanium samples with nitrogen leads to an increase in their strength properties after corrosion tests with a slight decrease in ductility. An additional advantage of this coating is to reduce of leaching of alloying elements from samples in corrosive environments.
The Influence of Alloying Elements with Shape Memory Effect on Corrosion-Mechanical Properties of Welded Joints
Authors: Blednova Zhesfina Michailovna , Myshevsky Igor Sergeevich , Blednov Yuriy Gavrilovich , Zverkov Kirill Andreevich
Published: March 2016

The article contains analysis results of destruction of chemical generator corps representing thin-walled pressure vessels working under cyclic loading and in corrosive environments. It is shown that the corps made of steel 321 was destroyed mainly along the weld and heat affected zone. To improve the durability of corps we used materials with shape memory effect (SME) based on NiTi as alloying compound of welds. This allowed us to combine the functional properties of alloys with shape memory effect with increased mechanical, technological and operational properties. Accomplished electrochemical studies of corrosion behavior of steel 321 samples alloyed with NiTi in 3.5% NaCl solution, showed that the corrosion rate of welded joint and the base material are comparable. Fatigue tests in the environment KOH + H2 showed a significant reduction of ductility, which indicates the presence of hydrogen embrittlement. With increasing degree of hydrogenation the fatigue life of alloyed compounds drastically reduces.
The Influence of Cutting Metal Elements on the Structure and Corrosion Resistance of the Zn Coating
Authors: Węgrzynkiewicz Sylwia , Waś-Solipiwo Joanna , Hajduga Maciej , Hajduga Marta Anna , Hajduga Maciej Błażej
Published: March 2016

The aim of the research was the indication of the causes of a difference in thickness of the zinc coating on the surface shaped by plasma cutting. The research was focused on fittings for overhead power lines - a double eyes links made of steel S355J2. The prepared materials were cut by plasma. Then, links were subjected to mechanical treatment (shot-blasting) and chemical treatment (pickling, rinsing and fluxing). The hot-dip galvanizing process was performed in industrial conditions by applying the constant temperature equal to 457°C, and a dipping time equal to 150 s. The research was conducted on the link’s flat surface (after rolling) and the side surface (after cutting). The (Zn) - coating morphologies and sub-layer thicknesses were evaluated on the basis of metallographic analysis and corrosion tests (acc. to EN ISO 9227). The correlation between the results of corrosion test and coatings morphology was determined.The observed changes are closely related to the outer layer steel structure (HAZ) which subsequently influences the mechanism and zinc coating growth kinetics
Ni-W Alloys for Hydrogen Evolution
Authors: Zemanová Matilda , Druga Jakub , Szúnyogh Ján , Dobročka Edmund
Published: March 2016

Ni-W alloys were prepared by electrodeposition at diverse processing conditions. The Ni-W alloys were studied by SEM, EDX and XRD analysis to determine composition and morphology of the surface in dependence on electrodeposition conditions. Focus was put on surface with electroactive sites for hydrogen evolution. Stability of the alloys in chloride medium was determined applying chronopotentiometry and potentiodynamic polarization. Electrochemical behavior of the alloys was tested in alkaline solution by cyclic voltammetry. It was found that processing conditions directly influence quality of the Ni-W alloys concerning phase, morphology and composition. Prevailing amorphous phase of Ni-W alloys supports corrosion rate growth.
The Influence of LPPS Process Parameters on Porosity and Microstructure of MCrAlY Coatings
Authors: Kubaszek Tadeusz , Pytel Maciej , Góral Marek
Published: March 2016

In present article the influence of Low Pressure Plasma Spraying (LPPS) process parameters on microstructure of MCrAlY coatings was studied. Nowadays the Atmospheric Plasma Spray (APS) is the most widely used process to obtain MCrAlY-type coatings. The LPPS process may be consider as an alternative technology for deposition of this type coatings which have less porosity and smaller amount of oxides compared to APS coatings. This features are important to obtain coatings with better hot corrosion and oxidation resistance. In order to determine and optimize the process parameters the microscopic investigations were carried out. Assessment of microstructure, thickness of coating and porosity level was conducted as well. Correlation between LPPS parameters and obtained microstructure have been found. It has significant meaning for deposition of MCrAlY coatings which could be applied as a bond coat in thermal barrier coating (TBC).
Voltammetric and Chronopotentiometric Study of Nonstationary Processes at the Oxygen-Evolving Anodes in KF–NaF–AlF3–Al2O3 Melt
Authors: Suzdaltsev Andrey , Khramov Andrey , Kovrov Vadim Anatolyevich , Limanovskaya Oksana , Nekrasov Valentin , Zaikov Yuriy
Published: March 2016

Abstract. Some features of behavior and kinetic of the anodic processes for the platinum and Cu–Fe–Ni alloy in the KF–NaF–AlF3–Al2O3 melts at 1025–1055 K have been studied by cyclic voltammetry and chronopotentiometry.The obtained results allowed us to conclude that mechanisms of the anodic processes at the platinum and Cu–Fe–Ni alloy are similar. Both mechanisms include the oxidation stage of electrode material. A rate of this stage is determined to depend significantly on the melt temperature.
The Influence of Sodium Molybdate on the Rate of Corrosion of Aluminum in Phosphoric(V) Acid
Authors: Kwolek Przemyslaw , Dychtoń Kamil , Szydełko Justyna , Gradzik Andrzej , Drajewicz Marcin , Sieniawski Jan
Published: March 2016

Corrosion rates of aluminum in phosphoric (V) acid solutions were determined gravimetrically in a presence of sodium molybdate which acts as an inhibitor. Inhibition efficiencies were calculated. The most effective corrosion inhibition was observed for 0.5 M H3PO4 and 100 mM of Na2MoO4. Since insoluble corrosion products precipitated onto specimens and influenced the determined corrosion rates, an analysis of a morphology of the specimens was performed by using a scanning electron microscope. The corrosion products are composed of Mo, P, Al and O. An Mo/P atomic ratio varied between 0.8 and 1.6 depending on the concentrations of phosphoric (V) acid and sodium molybdate. For three concentrations of H3PO4, the concentration ranges of sodium molybdate, where the gravimetric method may be applied were determined.
Characteristics of the Al-Brasses Affected Corrosion Properties
Authors: Liptáková Tatiana , Lovíšek Martin , Hadzima Branislav
Published: March 2016

The Al-brasses are considered corrosion resistant construction materials often used to pipe systems in energy industry, where they are exposed to flowing liquids environments. In that system the brasses are loaded chemically and mechanically. The aim of our research work is to compare corrosion properties of four Al-brasses produced by different manufactures because in operation conditions they have dissimilar reliability and durability. The examined Al-brasses have similar chemical composition but differ in microstructure, surface state what affects their corrosion and mechanical properties. The effect of the mentioned parameters on corrosion and mechanical susceptibility to degradation are investigated by chosen experimental methods.
Innovative Solutions from the Field of the Material Science and Medicinein the Interior of Modern Ambulances
Authors: Hajduga Marta Anna , Węgrzynkiewicz Sylwia , Waś-Solipiwo Joanna , Hajduga Maciej , Hajduga Maciej Błażej
Published: March 2016

Exploitation of ambulances in contaminated conditions causes that they are exposed to damaging the surfaces. Steel components are protected from corrosion by metallic and paint coatings, e.g. selected parts of medical equipment are protected by Ni, Cr, Cu coatings and additionally by hot-dip galvanizing or zinc galvanic. The appearance of corrosion cells has a significant impact on the products sustainability.In the study the results of the research, regarding the application of innovative solutions from the field of the material science and medicine in the interior of modern ambulances are described. The aim of investigations was the proper selection of anticorrosion coatings appropriate to ambulance considering the sterility keeping and the best anticorrosion properties.
Explosions Caused by Corrosive Gases/Vapors
Authors: Skřínský Jan , Vereš Ján , Trávníčková Jana , Dalecká Andrea
Published: March 2016

Gas/vapor cloud explosions and fires are responsible for most of the largest property loss events worldwide in the hydrocarbon industry. Motivation for this article is to summarize explosion pressure caused by corrosive gases/vapors in terms of mathematical modeling. Presented explosions based on real scenarios of accidents associated with transport and storage facilities with corrosive flammable chemicals. While explosions of pure flammable chemicals are well described in the literature, the information about explosions of corrosive and toxic flammable substances is rather scarce. This work aims at studying the explosion behavior of pure hydrogen-air, pure ammonia-air, ammonia-hydrogen-air, ammonia-methanol-air, ammonia-ethanol-air mixtures at different initial temperatures and pressures. The results of mathematical modeling of the calculated maximum explosion pressure are described.
Influence of Reinforcement Corrosion on Reliability and Remaining Lifetime of RC Bridges
Authors: Koteš Peter , Vican Josef , Ivašková Martina
Published: March 2016

The evaluation of existing bridge structures is the most important process in the global Bridge Management System (BMS) because of providing the basic information about existing bridges required from the viewpoint of decision making process related to the optimal bridge maintenance and rehabilitation strategy. The theoretical approach using conditional probability and the positive effect of the inspection was developed. The new information concerning the actual structure condition is used in this mathematical model. This information is not available in the process of the new structure design [1]. The work is focused on structures subjected to bending [2]. The reinforced concrete beam elements with or without degradation were investigated. The corrosion of reinforcement bars was used as material degradation. The biggest effect of the inspection was obtained for members, which do not degrade. Hereby, the negative effect of degradation on reliability index is also demonstrated.
Use of a Comprehensive Program to Reduce the Incidence of Hospital-Acquired Pressure Ulcers in an Intensive Care Unit
Authors: Swafford Katie , Culpepper Rachel , Dunn Christina
Published: March 2016

Background

Hospital-acquired pressure ulcers (HAPUs) are a costly and largely preventable complication occurring in a variety of acute care settings. Because they are considered preventable, stage III and IV HAPUs are not reimbursed by Medicare.

Objectives

To assess the effectiveness of a formal, year-long HAPU prevention program in an adult intensive care unit, with a goal of achieving at least a 50% reduction in 2013, compared with 2011.

Methods

Planning for the prevention program began in 2012, and the program was rolled out in the first quarter of 2013. Program components included use of Braden scores, a revised skin care protocol, fluidized repositioners, and silicone gel adhesive dressings. Efforts were made to educate and motivate staff and encourage them to be more proactive in detecting patients at risk of HAPUs.

Results

Incidence of HAPUs in the unit was reduced by 69% (n = 17; 3% of patients in 2013 vs n = 45, 10% of patients in 2011), despite a 22% increase in patient load. The potential cost saving as a result of this decrease was approximately $1 million.

Conclusions

A comprehensive, proactive, collaborative ulcer prevention program based on staff education and a focus on adherence to protocols for patient care can be an effective way to reduce the incidence of HAPUs in intensive care units.
Bereavement Services Offered in Adult Intensive Care Units in the United States
Authors: McAdam Jennifer L. , Erikson Alyssa
Published: March 2016

Background

Losing a loved one in the intensive care unit (ICU) is stressful for family members. Providing bereavement support to them is recommended. However, little is known about the prevalence of bereavement services implemented in adult ICUs.

Objective

To describe current bereavement follow-up services in adult ICUs.

Method

A cross-sectional prospective study design was used. ICU nurse leaders completed a 26-item online survey posted in the American Association of Critical-Care Nurses e-newsletter. The survey contained questions about current practices in bereavement care. Data were collected for 1 month and were analyzed by using descriptive statistics and binary logistic regression.

Results

A total of 237 ICU nurse leaders responded to the survey. Hospital and ICU types were diverse, with most being community (n = 81, 34.2%) and medical (n = 61, 25.7%). Most respondents reported that their ICUs (n = 148, 62.4%) did not offer bereavement follow-up services, and many barriers were noted. When bereavement follow-up care was offered, it was mainly informal (eg, condolence cards, brochures). Multiple logistic regression indicated that ICUs in hospitals with palliative care were almost 8 times (odds ratio, 7.66) more likely to provide bereavement support than were ICUs in hospitals without palliative care.

Conclusions

The study findings provide insight into what type of bereavement evaluation methods are being used, what barriers are present that hinder use of bereavement follow-up services, and potential interventions to overcome those barriers in adult ICUs in the United States.
Biostratigraphic determinations of fossils from the subsurface of the Yukon Territory and the districts of Franklin, Keewatin and Mackenzie
Authors: Norford B S , Brideaux W W , Chamney T P , Copeland M J , Frebold H , Hopkins W S , Jeletzky J A , Johnson B , McGregor D C , Norris A W , Pedder A E H , Tozer E T , Uyeno T T
Published: March 2016

Identifications and age determinations are presented for fossils from twenty-six wells in the Yukon Territory and the Districts of Franklin, Keewatin and Mackenzie. Ages range from Ordovician to Tertiary and are based on identifications of spores, pollen,
dinoflagellates, acritarchs, conodonts, foraminifers, corals, gastropods, cephalopods, pelecypods and brachiopods.
A new rhynchonelloid brachiopod from the Upper Jurassic rocks of British Columbia
Authors: Owen E F
Published: March 2016

The rhynchonelloid brachiopod described in this paper as Ptilorhynchia jeletzkyi sp. nov. was previously cited as "Rhynchonella" ex aff. schucherti Stanton and comes from shales of the Relay Mountain Group in the Taseko Lakes area of southwestern British
Columbia. The stratigraphy of the area was described by Jeletzky and Tipper, and the strata containing the specimens described here belong to the Buchia fischeriana and B. piochii Zones of the uppermost (?) Portlandian and Upper Tithonian Stages.
The Epworth group Rocknest Lake area, District of Mackenzie
Authors: Fraser J A
Published: March 2016

The Epworth Group outcrops in the southern half of the Epworth basin, an area of about 3, 500 square miles and comprises mainly unmetamorphosed sediments and minor interlayered volcanic rocks which have been subdivided into five conformable formations. In order
of decreasing age these are: the Odjick Formation, from 2, 100 to 7, 500 feet thick, composed of argillite and quartzite with minor conglomerate , carbonate, and andesite or metabasalt; the Rocknest Formation, from 2 , 300 to about 5 , 500 feet thick, consisting chiefly of stromatolitic dolomite
with some interlayered argillite and minor limestone and chert; the Recluse Formation, from 2, OOO to more than 6 , 500 feet thick, composed principally of argillite , greywacke , siltstone , and subordinate limestone ; the Cowles Lake Formation, about 2 , 600 feet thick, a succession of
interlaminated and interlayered limestone and argillite with minor greywacke ; and the Takiyuak Formation, 1 , 200 feet thick, comprising reddish lithic and feldspathic arenite. The total thickness of the Epworth Group increases from about 10, OOO feet near the eastern margin of the Epworth basin to
about 20, OOO feet in the central part of the basin. Derivation of elastics of the Odjick and Rocknest formations from the east, and elastics of the younger formations from the west, is consistent with their deposition in the evolving Coronation Geosyncline. The lowermost Epworth sediments lie with
pronounced angular unconformity on Archean basement rocks. A long the western margin of the basin where Epworth strata have been intruded and migmatized by late Aphebian granite, metamorphism has reached upper amphibolite facies grade under intermediate to low pressure conditions. In general
metamorphism and intensity of deformation increase progressively westward. Folding around north e rly trending axes of shallow plunge and displacement along north- trending dip - slip, possibly thrust, faults, is associated with granite emplacement. Numerous north-easterly trending, dextral,
predominantly strike - slip faults, and sparse, north westerly trending, sinisterly, strike - slip faults post - date the granite, folds and dip - slip faults. The Epworth Group has been intruded by diabase dykes and sills of Helikian and probably Hadrynian age. Dykes of the Mackenzie swarm post -
date the strike - slip faults.
Fluvial sedimentary structures formed experimentally in a pipe, and their implications for interpretation of subglacial sedimentary environments
Authors: McDonald B C , Vincent J -S
Published: March 2016

A series of experiments were performed with a glacio -fluvial sand in transparent acrylic cylindrical pipes of 24. 8 and 29. 9 cm in diameter, respectively, to gain some insight into sedimentary processes in fluvial systems where water flows beneath ice. One of
the objective s was to investigate criteria that might be diagnostic in the field to identify sediments deposited in glacier tunnels flowing full. With increasing sediment concentration at a given discharge, the sequence of bed forms was : ripple , dune , dune-plane , plane , dune - plane, and total
suspension. Dune foresets commonly became finer - grained down the foreslope and displayed a slope discontinuity due to s lumping in the upper part of the foreset. Stoss laminations were te1nporarily preserved due to an upward convexity of the stoss surface. Within the range of experimental
variables, dune celerity is directly proportional to the cube of mean flow velocity; the ratio of mean flow velocity to dune celebrity is inversely proportional to the square of the Reynolds Number, and symmetry index of the dunes is directly proportional to the square of the Reynolds Number. Dune
height is 1 /3 to 1 times the hydraulic mean depth. The system tends to maximize the hydraulic mean depth by adjustment of both b e d height and bed form. These relationships are tentatively extended to processes of esker sedimentation with the use of a natural example. Esker sediments deposited in
tunnel s are characterized by parallel lamination and large - scale cross stratification, compatible with deposition near maximum hydraulic mean depth. Dune heights indicate actual water depths of 1 to 4 metres, and lead to the suggestion that accumulation of esker sediment was accommodated by a
melting upward of the ice roof. Unidirectional flow with high bed -shear was maintained by the ice roof having limited the flow cross-section, and a fluvial sequence was s epos ited that did not require essentially subaerial conditions.
Use of an 'automatic sulphur titrator' in rock and mineral analysis: determination of sulphur, total carbon, carbonate and ferrous iron
Authors: Bouvier J L , Sen Gupta J G , Abbey S
Published: March 2016

An induction furnace and an automatic titrator have been applied to the iodimetric determination of sulphur in rocks. Total carbon has been determined in a slightly modified version of the same apparatus, involving a nonaqueous absorbing solution and titration
system. The modified system has also been used to determine carbonate by titrating the carbon dioxide evolved by acid treatment. Finally, the same titrator has been utilized in the determination of ferrous iron by titrating the sulphur dioxide evolved when a rock sample is digested in a hot mixture
of concentrated sulphuric and phosphoric acids.
A rapid determination of total organic and inorganic carbon in shales and carbonates
Authors: Foscolos A E , Barefoot R R
Published: March 2016

Procedure and apparatus for determining inorganic and organic carbon in shales and carbonates are described. Results obtained by the proposed method are comparable to those obtained by (i) the United States Geological Survey, (ii) other analysts , and (iii) X-ray
diffraction; they are accurate and reproducible. The method is very rapid.
Échantillonnage des travaux d'exploration minière de 200 cantons de l'Abitibi-nord
Authors: Gaucher E H , Nadeau A
Published: March 2016

The nature and intensity of mining exploration carried out in two hundred townships in Abitibi has been examined by a study of compiled works cove ring two per cent of this area. The compiled works were those reported from files of the Department of Natural
Resources. Chibougamau-Chapais, Mattagami and Joutel-Poirier are the main mining centres. Almost all the records investigated are dated after 1950, and are related to prospecting for massive base metal sulphide deposits. The discovery of Mattagami and Joutel mining centres resulted from that work.
The mines of Chibougamau had been dis covered previously by prospectors and there are no compiled records related to this period. The records show the usual sequence of works: airborne aeromagnetic surveys, ground electromagnetic and magnetic surveys and drilling. One conductor in six is magnetic.
The airborne survey work appears very poorly reported but the ground surveys (6% of the area) and the drilling in particular appear more complete. Among other techniques, there are some gravity checks indicated by the conductors, some resistivity (pre EM) and also polarization surveys carried
out at Chibougamau; there have been very few applications of geochemistry, probably because of clay cover. The surficial cover and especially the clay constitute an obstacle to prospecting; only an average of 1 % of bedrock is exposed. The compilation has shown 73 test holes excluding detailed
drilling around an occurrence ; this would indicate a figure of about 5, OOO holes for an area with 3 mining camps . The drilling for conductors which was the general purpose for the holes, went through layered rocks at least 90% of the time. The amount of sulphides found was generally very
low.
Three new lower paleozoic formations of the Boothia Peninsula region, Canadian Arctic Archipelago
Authors: Christie R L
Published: March 2016

Three newly named lower Paleozoic formations occur on Boothia Peninsula and this sequence of strata overlies non conformably rocks of the Canadian Shield. The new formations include, for this region, the oldest bedded rocks of the Interior Platform. The lower
Paleozoic strata are preserved on the flanks of Boothia Uplift and as outliers within the Precambrian terrane. The outliers are made up largely of the lower two formations, whereas the upper formation underlies large areas east and west of the Boothia Precambrian belt. The basal unit, the Boothia
Felix Formation, comprises sandstone and sandy dolomite, is about 3SO feet (110 m) thick, and contains Middle Cambrian fossils. It is overlain by the Netsilik Formation, which consists of silty and sandy .dolomite, dolomite, and intra formational conglomerate and breccia. This unit is about SOO feet
( l SO m) thick and has yielded Early Ordovician fossils. The youngest unit, the Franklin Strait Formation, which comprises dolomite and sandy dolomite, is more than 2,000 feet (600 m) thick, and probably ranges in age from Middle Ordovician to Middle Silurian .
Subsurface Lower Paleozoic stratigraphy in northern and central Alberta
Authors: Pugh D C
Published: March 2016

Depositional environments in the subsurface of the north-central and northwestern Alberta Plains, resulting from a subsiding Cordilleran geosyncline to the west and the initial subsidence of the Williston Basin to the east, were modified by early movements of the
Peace River Arch. Consequently, Cambrian formations in the subsurface consist mainly of a shoreward elastic facies of the limestone and dolomite units that outcrop in the Rocky Mountains and Foothills Belt of Alberta. Precambrian regolith is preserved in scattered thin patches beneath the Middle
Cambrian sediments, the oldest being the Basal sandstone unit which was deposited on an uneven surface with topographic relief increasing to the northwest. Deposition of the overlying Middle Cambrian succession of Mount Whyte, Cathedral, Stephen, Eldon and Pika Formations was partly discontinuous
over the relatively young Peace River Arch. The succession changes eastward into the Earlie Formation of eastern Alberta. The Upper Cambrian Sullivan Formation north of Township 63 is restricted to an embayment southeast of the Peace River Arch . Overlying beds of the Upper division of the Lynx
Group, probably more widespread at one time, were truncated with all Cambrian strata on both flanks of the Peace River Arch during the long period of erosion which followed their deposition. Precambrian and Cambrian erosion surf aces form the base of the pre Devonian unconformity of northern
Alberta. The first major Paleozoic uplift occurred during Middle Devonian time in the Peace River area. Precambrian erosional debris from the higher parts of the Peace River Arch was almost entirely transported into the surrounding seas to create a thick fringe of primary arkosic sands around the
Devonian Upper Elk Point carbonate and evaporite beds. Some remnants of the regolith, more than one hundred feet thick, remained on highland slopes prior to their submergence. Some Precambrian sununits of the Peace River Arch remained emergent until Late Devonian time.
A shallow seismic survey, elastic constants studies and surficial geology of part of Defence Research Establishment Suffield, Alberta
Authors: Hobson G D , Hunter J A M , Scott J S
Published: March 2016

A hammer refraction seismic survey was conducted over the Watching Hill and Drowning Ford areas of the Defence Research Establishment Suffield (DRES) , Suffield, Alberta, to investigate in detail the overburden materials and stratification within the overburden,
and to investigate the bedrock topography and lithology. Seismic control was concentrated at or near former and anticipated blast sites . The details of the survey are presented in the form of several sections and contoured maps. A seismic survey was also conducted at a site near Brutus radio tower
(DRES) for the purpose of investigating the feasibility of establishing a seismic vault in that area as part of the permanent seismic network of Canada. A detailed survey has permitted correlations to be made between seismic velocities and geology. The surficial geology of part of the Defence
Research Establishment Suffield (DRES) was mapped on a reconnaissance scale. An attempt was also made to develop a method of measuring the dynamic elastic constants of soils in situ using a portable hammer seismograph. Some of the techniques employed are described.
Precambrian geology of the Berens River map area [west half], Manitoba [63A W 1/2]
Authors: Ermanovics I F
Published: March 2016

Quartzofeldspathic layered gneiss underlies 60 per cent of the area, the remainder being intrusive, homogeneous, massive to foliated quartz monzonite and diorite. Metamorphic affects indicate that three separate events of metamorphism have affected rocks in the
area. No mineral deposits were found or are known in the area nor are any unusual anomalies displayed on the available aeromagnetic maps.
Quaternary stratigraphy and radiocarbon chronology in southwestern Manitoba
Authors: Klassen R W
Published: March 2016

A Quaternary stratigraphic succession in southwestern Manitoba includes glacial and nonglacial sediments indicative of at least three glacial and three nonglacial intervals. The oldest non glacial deposit (Souris grave l and sand) appears to be early Pleistocene
whereas the later nonglacial and glacial deposits are largely of late Pleistocene age. Deposition of the oldest named till (Shell Till) was followed by deposition of the nonglacial 'Roaring RiverClay' that may correlate with the early Wisconsin St. Pierre and Missinaibi beds in eastern Canada or
with the Sangamon interglacial deposits of the mid - western United States. A finite radio carb on date from sediments between a later till (Minnedosa Till) and the youngest till (Lennard Till) suggests the sediments correlate in part with those of t h e Port Talbot interstade of the Lake Erie
region in Eastern Canada. Late glacial and recent sediments with in the Assiniboine River valley yielded radiocarbon ages that permit correlation of postglacial valley development with events in the Lake Agassiz Basin.
Gradients of past and present outlet glaciers
Authors: Buckley J T
Published: March 2016

Gradients have been calculated for a large number of outlet glaciers entering fiords in Alaska, Greenland, Antarctica and Arctic Canada. A linear relationship exists between the overall length and the gradient of these glaciers. This method finds application in
the reconstruction of ice surfaces of former outlet glaciers in areas previously glaciated, and an example is taken from Baffin Island.
Descriptive notes, dubawnt Gp, geological map of central thelon plain, Districts of Keewatin and Mackenzie
Authors: Donaldson J A
Published: March 2016

More than three-quarters of the area mapped is underlain by the Paleohelikian (Late Proterozoic) Dubawnt Group, an assemblage of unmetamorphosed sedimentary and volcanic rocks. Elsewhere granitoid rocks and minor amounts of greenstone, quartzite and schist, form
the bedrock. The area is extensively driftcovered. No significant mineralization was noted in the area.
Upper paleozoic and mesozoic stratigraphy in the Yelverton Pass region, Ellesmere Island, District of Franklin
Authors: Nassichuk W W , Christie R L
Published: March 2016

Upper Paleozoic and Mesozoic formations in the Tanquary Fiord - Yelverton Pass area of the Sverdrup Basin include rocks of both marginal and basinal facies with a maximum thickness of about 11, OOO feet. Formational thicknesses are variable, particularly near the
basin margin, and all formations are separated by disconformities. The entire upper Paleozoic - Mesozoic sequence is structurally conformable interna lly. A late Paleozoic - early Mesozoic structural high, the Tanquary structural high,lying between Yelverton Pass and the head of Tanquary Fiord, is
named. Upper Triassic beds rest unconformably on lower Paleozoic basement rocks over most of this feature, whereas, adjacent to the high, the basement rocks are unconformably overlain by upper Paleozoic beds.
Short version user's guide to the paleomagnetic data filing system program
Authors: Lapointe P L , Carrière D
Published: March 2016

The paleomagnetic data filing system program is described for users. It contains a short description of the program capabilities and also their mathematical basis. It is intended for persons without basic knowledge of computer or programming. For details the user
is referred to the main users guide.