Modelling of Complex DEH Systems

2017 ◽  
Author(s):  
Øyvind Pharo Hanisch
Keyword(s):  
Electric Heating ◽  
The Other ◽  
Flow Assurance ◽  
Complex Field ◽  
Close Interaction ◽  
Close Proximity ◽  
Current Systems

Direct Electric Heating (DEH) is an increasingly attractive method for flow assurance that has been in use for more than 15 years. All current systems in operation consist of a single flowline or have subsea architecture such that interaction between systems as well as components in the proximity is limited. DEH is selected as flow assurance for two ongoing field developments where the layout is such that there will be interaction with other subsea architecture. One system has numerous flowline systems in close interaction and the other has unfavorable crossing. This paper presents some of the design aspects which do arise for fields where the flowlines are in close proximity to each other. The paper also discusses how to handle interference with existing infrastructure when installing DEH in a complex field layout. The aspects studied are effect on power rating, ac corrosion and thermal rating of cables and flowlines.

scholarly journals The Properties of Cu Ions in Zeolites CuY Studied by IR Spectroscopy

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4686
Author(s):  
Jerzy Podobiński ◽  
Mariusz Gackowski ◽  
Grzegorz Mordarski ◽  
Katarzyna Samson ◽  
Michał Śliwa ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Positive Charge ◽  
Co Adsorption ◽  
The Other ◽  
Probe Molecules ◽  
Adsorption And Desorption ◽  
Other Hand ◽  
Close Proximity ◽  
No And Co Adsorption ◽  
Cu Ions

The properties of both Cu2+ and Cu+ ions in zeolite CuY were followed with NO and CO as probe molecules. Cu2+ was found to be located in SII, SII*, and SIII sites, whereas Cu+ was found in SII and SII* sites. The fine analysis of the spectra of Cu2+-NO and Cu+-CO adducts suggests that both in SII and in SII* sites two kinds of Cu cations exist. They differ in the positive charge, which may be related to the varying numbers of AlO4− in close proximity. The experiments of NO and CO adsorption and desorption evidenced that both Cu2+ and Cu+ sites of highest positive charge bind probe molecules most strongly but activate them to a lesser extent than the Cu sites of lowest positive charge. The experiments of reduction with hydrogen evidenced that the Cu ions of higher positive charge are first reduced by hydrogen. On the other hand, Cu sites of the lowest positive charge are first oxidized by oxygen. The experiments with CuNaY zeolites of various Cu contents suggest that the first introduced Cu (at low Cu contents) created Cu+, which was the most neutralized by framework oxygens. Such Cu cations are the most stabilized by framework oxygens.

scholarly journals The Effect of Route Choice in Children’s Exposure to Ultrafine Particles Whilst Walking to School

2021 ◽  
Vol 18 (15) ◽  
pp. 7808
Author(s):  
Mehrdad Rafiepourgatabi ◽  
Alistair Woodward ◽  
Jennifer A. Salmond ◽  
Kim Natasha Dirks
Keyword(s):  
Ultrafine Particles ◽  
Route Choice ◽  
The Other ◽  
Close Proximity ◽  
Public Health Officials ◽  
Risk Of Exposure ◽  
The Mean ◽  
Walking To School ◽  
Elevated Exposure ◽  
Children’S Exposure

Children walking to school are at a high risk of exposure to air pollution compared with other modes because of the time they spend in close proximity to traffic during their commute. The aim of this study is to investigate the effect of a walker’s route choice on their exposure to ultrafine particles (UFP) on the walk to school. During morning commutes over a period of three weeks, exposure to UFP was measured along three routes: two routes were alongside both sides of a busy arterial road with significantly higher levels of traffic on one side compared to the other, and the third route passed through quiet streets (the background route). The results indicate that the mean exposure for the pedestrian walking along the background route was half the exposure experienced on the other two routes. Walkers on the trafficked side were exposed to elevated concentrations (>100,000 pt/cc) 2.5 times longer than the low-trafficked side. However, the duration of the elevated exposure for the background route was close to zero. Public health officials and urban planners may use the results of this study to promote healthier walking routes to schools, especially those planned as part of organized commutes.

The Rubber Pendulum, the Joule Effect, and the Dynamic Stress-Strain Curve

1935 ◽  
Vol 8 (2) ◽  
pp. 151-173 ◽  
Author(s):  
W. B. Wiegand ◽  
J. W. Snyder
Keyword(s):  
Strain Curve ◽  
Electric Heating ◽  
Radiant Heat ◽  
Rubber Band ◽  
The Other ◽  
General Description ◽  
Joule Effect ◽  
Heat Engines ◽  
Metal Shield ◽  
Original Length

Abstract General Description.—The rubber pendulum is one of two devices (Wiegand, Trans. Inst. Rubber Ind., 1, 141 (1925)) which, by employing the Joule effect, constitute rubber heat engines in that they continuously convert heat into mechanical work. In Fig. 1 is shown the original pendulum. It consists of an ordinary pendulum of slow period fitted with a rubber band, one end of which is attached to the bob; the other to the upright support. This rubber band is stretched to four or five times its original length. Behind the upright is a metal shield so arranged that when the bob has reached the extremity of its swing the rubber band is clear of the shield, during the rest of the oscillation being in its shadow. Behind the pendulum and shield is an electric heating element with a copper reflector. The pendulum is started by displacement from the center towards one or other extremity. As this is done the rubber band is increased in length. At the extremity of the oscillation the stretch band is exposed to the radiant heat from the element, the Joule effect is brought into play and the band tends to shrink, thus pulling back the bob. Directly the band moves back within the shadow of the shield it cools, relaxes, and so allows the bob to swing out to the other side. Thereupon the band is once more heated up, contracts and so repeats the oscillation, which continues as long as the heat energy is supplied. When the electric current is turned off the pendulum dies down.

scholarly journals Non-philosophical Christ-poetics beyond the mystical turn in conversation with continental philosophy of religion

2016 ◽  
Vol 72 (3) ◽  
Author(s):  
Johann-Albrecht Meylahn
Keyword(s):  
Philosophy Of Religion ◽  
Continental Philosophy ◽  
The Other ◽  
Negative Theology ◽  
The Uncanny ◽  
Close Proximity ◽  
Mystical Theology ◽  
Critical Conversation ◽  
Language Text ◽  
The Way

The religious turn in continental philosophy has opened the door for postmetaphysical mystical theology. Postmetaphysical mystical theology seeks to understand the non-relation relation of language (text) to the Other. Yet, this non-relation relation to the Other, who is every other, can also be interpreted differently to the mystical understanding. For example, Žižek argues that the Other, which is often experienced as the uncanny, the unpredictable and the contingent (lived spirituality), is not necessarily the result of some mystical unknowable Otherness but is a consequence of the way the subject’s own activity is inscribed into reality. These experiences of lived spirituality or experiences of Otherness can, rather than being interpreted as an in-breaking of the mystical Other, be interpreted otherwise, as a grammatological consequence of the inability and impossibility of language (Lacan). Therefore, in this article, Žižek’s thoughts function as a bridge to bring this mystical turn back into critical conversation with continental philosophy and particularly with the thoughts of Derrida, Laruelle and Stiegler. The contemporary mystical turn in theology rediscovers something of this non-religious religion. Derrida’s thoughts are in close proximity to negative theology and yet there is an important difference. This difference will be explored and further developed towards Laruelle’s non-philosophy, which does not translate into a non-religion religion or postmetaphysical metaphysics but remains a non-philosophy or maybe a science of Christ. This article will conclude with a tentative exploration of a postmetaphysical Christ-poetics beyond the mystical turn.

scholarly journals Power Relation In Memoirs Of Geisha And The Dancer

2014 ◽  
Vol 7 (2) ◽  
pp. 151
Author(s):  
Mundi Rahayu ◽  
Lia Emelda ◽  
Siti Aisyah
Keyword(s):  
Symbolic Capital ◽  
Power Relation ◽  
Economic Capital ◽  
The Other ◽  
Female Character ◽  
Other Hand ◽  
Close Interaction ◽  
And Performance

This article aims at comparing the ideas of power relation between themain female character and ―Mother‖ in Arthur Golden‘s Memoirs ofGeisha and Ahmad Tohari‘s The Dancer. These two novels share thesame main female character of traditional entertainers, as a Japanese geisha and a Javanese traditional dancer, respectively. As an entertainer in the traditional sphere, they are bounded with the other women and build close interaction as well as power relation with them who are called ―Mother‖ in the Geisha and ―ronggeng shaman‖ in The Dancer. Thepower relation between them are unique and dynamics. This is analyzed through Foucault‘s theory of power. The result of the analysis shows that the power relation is not stable, and the power practiced by each of them is influenced by the symbolic capital and economic capital they have. The negotiation and contestation come up between the actors in dailypractices as geisha and the mother, as the ―ronggeng‖ and the shaman. As the entertainers, the geisha and ―ronggeng‖ build and shape their body and performance to attract men. This geisha and ronggeng culture reproduce many other cultural product such as ―mizuage‖ in geisha, and ―bukak klambu‖ in ―ronggeng‖ both of which refer to the same thing, selling the woman‘s virginity to the highest bidder. In geisha it is used to benefit the Mother of Okiya and no rebellion of the geisha. On the other hand, Srintil does rebellious action in this ―bukak klambu‖ occasion. There seems to be different message from these two novels, The Dancer is much more questioning the norms covering the ―ronggeng‖ tradition while the Memoirs of Geisha tends to be accepting the geisha tradition as what it is.Keywords: Power Relation; Geisha ; Ronggeng ; Norms

Skewhermitian and mixed pencils

2014 ◽  
Author(s):  
Leiba Rodman
Keyword(s):  
Hermitian Matrix ◽  
The Other ◽  
Canonical Forms ◽  
Complex Field ◽  
Complex Matrix ◽  
Analogous Property ◽  
Matrix Pencils

This chapter turns to matrix pencils of the form A + tB, where one of the matrices A or B is skewhermitian and the other may be hermitian or skewhermitian. Canonical forms of such matrix pencils are given under strict equivalence and under simultaneous congruence, with full detailed proofs, again based on the Kronecker forms. Comparisons with real and complex matrix pencils are presented. In contrast to hermitian matrix pencils, two complex skewhermitian matrix pencils that are simultaneously congruent under quaternions need not be simultaneously congruent under the complex field, although an analogous property is valid for pencils of real skewsymmetric matrices. Similar results hold for real or complex matrix pencils A + tB, where A is real symmetric or complex hermitian and B is real skewsymmetric or complex skewhermitian.

scholarly journals Observations of Bobcats, Lynx rufus, Hunting Black-Tailed Prairie Dogs, Cynomys ludovicianus, in Western South Dakota

2010 ◽  
Vol 124 (3) ◽  
pp. 209 ◽  
Author(s):  
Daniel S. Licht
Keyword(s):  
South Dakota ◽  
Scientific Literature ◽  
Lynx Rufus ◽  
The Other ◽  
Cynomys Ludovicianus ◽  
Prairie Dogs ◽  
Prairie Dog ◽  
Winter Diet ◽  
Hunting Strategies ◽  
Close Proximity

There is a paucity of scientific literature describing Bobcat (Lynx rufus) hunting strategies. I document 13 observations of Bobcats hunting Black-tailed Prairie Dogs (Cynomys ludovicianus) in western South Dakota. In all cases the Bobcats stationed themselves next to a prairie dog mound in an attempt to ambush prairie dogs emerging from their burrows. In eight cases the Bobcats successfully captured a prairie dog emerging from the burrow, in one case the Bobcat turned and captured a prairie dog that had walked up behind it, and in the other cases the Bobcats lunged at the burrow openings, but did not capture a prairie dog. There were two variations of the tactic: in some cases Bobcats entered a colony prior to prairie dog emergence and stationed themselves next to a mound, whereas in other cases Bobcats stationed themselves next to a burrow that a prairie dog had just escaped to. One Bobcat appeared to have waited next to the same mound for at least 7.5 hr. Prairie dogs may comprise a large portion of a Bobcat's winter diet in landscapes where prairie dog colonies exist in close proximity to badlands or woody cover.

scholarly journals A comparison between the two lobes of comet 67P/Churyumov–Gerasimenko based on D/H ratios in H2O measured with the Rosetta/ROSINA DFMS

2019 ◽  
Vol 489 (4) ◽  
pp. 4734-4740 ◽  
Author(s):  
Isaac R H G Schroeder ◽  
Kathrin Altwegg ◽  
Hans Balsiger ◽  
Jean-Jacques Berthelier ◽  
Michael R Combi ◽  
...  
Keyword(s):  
Mass Spectrometer ◽  
European Space Agency ◽  
Cometary Nucleus ◽  
The Other ◽  
Appreciable Difference ◽  
Space Agency ◽  
Close Proximity ◽  
Double Focusing ◽  
Comet 67P

ABSTRACT The nucleus of the Jupiter-family comet 67P/Churyumov–Gerasimenko was discovered to be bi-lobate in shape when the European Space Agency spacecraft Rosetta first approached it in 2014 July. The bi-lobate structure of the cometary nucleus has led to much discussion regarding the possible manner of its formation and on how the composition of each lobe might compare with that of the other. During its two-year-long mission from 2014 to 2016, Rosetta remained in close proximity to 67P/Churyumov–Gerasimenko, studying its coma and nucleus in situ. Based on lobe-specific measurements of HDO and H2O performed with the ROSINA Double Focusing Mass Spectrometer (DFMS) on board Rosetta, the deuterium-to-hydrogen (D/H) ratios in water from the two lobes can be compared. No appreciable difference was observed, suggesting that both lobes formed in the same region and are homogeneous in their D/H ratios.

The State of Scientific Inquiry in Colonial Spanish America During the Enlightenment: A Preliminary Bibliography

1975 ◽  
Vol 31 (4) ◽  
pp. 488-500
Author(s):  
Leo M. Jacques
Keyword(s):  
North America ◽  
Scientific Knowledge ◽  
Scientific Inquiry ◽  
Time Lag ◽  
Spanish America ◽  
The Other ◽  
Spanish American ◽  
Scholarly Journals ◽  
The Enlightenment ◽  
Close Proximity

The scientific contributions of native scholars in the Americas have often been overlooked or neglected. The simultaneous discoveries of European scientists reached a wider audience because of the number of education centers in close proximity. The existence of several scholarly journals also facilitated the rapid dispensation of new scientific knowledge. Although Spanish American scholars lived far from the centers of European knowledge, there was no appreciable time lag between European discoveries and their circulation in Spain's colonies. On the other hand, Spanish American discoveries were unknown in Europe or North America except to a handful of prominent scholars.

The Modern Life of the East African Native

Africa ◽  
1932 ◽  
Vol 5 (1) ◽  
pp. 50-60 ◽  
Author(s):  
H. M. T. Kayamba
Keyword(s):  
Family Life ◽  
The Other ◽  
East African ◽  
Modern Life ◽  
Full Control ◽  
The Family ◽  
Close Proximity ◽  
Heavy Work ◽  
The Village

The family life of an African is primarily based on polygamy and patriarchy. Each family has its own village and the head of the family is elder of the village. As soon as a youth gets married and has children he thinks of establishing his own village in order to obtain sufficient land for cultivation for himself and his children. This is the start of a native village. He calls the village by some name which comes to his fancy. Probably after a few months few people join him at the newly established village; thus the village grows and the founder is called the elder of the village. The next thought of the African after he has acquired a little wealth is to increase the number of his wives to the number that his wealth can provide him. Very often he keeps them in different huts and at different villages which he calls Mtaa, meaning a quarter. He spends days and nights proportionately at each hut, usually three nights at each hut if they are in close proximity or seven days if they are far. He calls it Kugawa ngono, which means the distribution of conjugal rights. Each wife has her own farm which she cultivates with her children, her husband doing the heavy work. The husband has his own farm over which he has authority. Each wife harvests and keeps her own food in her granary in the hut. She has full control over her own food. She feeds and clothes her children from the proceeds of the sale of her crop; and feeds her husband with the same food when he stays with her. The crop from the husband's farm is stored in the senior wife's hut. The senior wife is the first wife in marriage. She keeps all the money of the husband and distributes food to the other wives from the husband's store when the other wives have run short of food.

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