continuous movement
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2021 ◽  
Vol 13 (2) ◽  
pp. 400-414
Author(s):  
Dr. Ahmed Obaid Kadhim Al-Ghazali

The transformations of the visual narrative come from preoccupation with the aesthetics of the artistic form and the creative presence of the artist, and the centrality of the system's discourse and its reference to the discourses of shattering the fixed meaning, demolishing the centrals and dissolving connotations in an infinite continuous movement in the sense of shifting to new imagined and potential structures closer to the assumption and the possibility of a reality that cannot be represented because it is a structure hidden behind Phenomena, so the dismantling and reshaping of reality takes place through the imagination, which may be parallel to reality or alternative to it, but it differs in its manifestations and may give us something else from knowledge, self-awareness, criticism of reality, and understanding of the world, so there is a new tendency is the tendency of rejection and rebellion, which confirms according to its own system its rejection of the public, Also, technology sought to create a new reality in which the subject contradicts the subject.


2021 ◽  
Author(s):  
H. J. Miller ◽  
A. D. Richard

Abstract OBJECTIVE / SCOPE An injector has been developed that is able to continuously move conventional jointed tubing in and out of wells that may be underbalanced. It is an advantage to use the jointed tubing injector rather than coiled tubing or conventional hydraulic snubbing due to cost, speed of operation, transportation, effectiveness, and safety. The paper will describe the function and application of the jointed pipe injector. METHODS, PROCEDURES, PROCESS An injector has been designed with retractable gripping segments integral to the gripper blocks that are able to function on conventional jointed tubing, over interconnecting couplings and with the advantages of continuously operating injector movement. The description is to include how the geometry of the retractable gripper block system works and how the technical and safety risks of a conventional snubbing system or coiled tubing are overcome. Configurations whereby the jointed tubing injector can be used to provide methods of completing wells that are safer and more efficient than coiled tubing or a conventional hydraulic snubbing jack will be presented. RESULTS, OBSERVATIONS, CONCLUSIONS The biggest limitation of coiled tubing is due to its size and residual bend, it is not capable of reaching the end of the well before the wellbore friction causes helical buckling. The OD of the coiled tubing is limited by the available reel sizes and the difficulty transporting the large reels due to road dimensional and weight limitations. Coiled tubing is not able to be rotated at any time in the well. The use of jointed tubing eliminates those limitations. When a well is being completed with a conventional hydraulic snubbing jack, the length of the stroke that the jack can take is limited by the allowable unsupported length of the tubing to ensure that it will not buckle. It is also forced to stop workstring movement each time the jack is reset therefore the static friction of the workstring must be overcome during each movement of the jacks. The design of the jointed tubing injector minimizes the unsupported length of the tubing and allows the continuous movement of the tubing. The operation is less labor intensive, and the controls can be moved to a position that is less exposed to danger. NOVEL / ADDITIVE INFORMATION The Jointed Tubing Injector can continuously move jointed tubulars in and out of a well. There is no other piece of equipment that will address as many of the problems that have been experienced in the completion of extended reach wells. The paper will describe the injector and control system and how it can be applied to solve the challenges.


Author(s):  
Santiago Grau ◽  
Olivia Ferrández ◽  
Elena Martín-García ◽  
Rafael Maldonado
Keyword(s):  

Author(s):  
Gernot R. Muller-Putz ◽  
Valeria Mondini ◽  
Victor Martinez-Cagigal ◽  
Reinmar J. Kobler ◽  
Joana Pereira ◽  
...  

2021 ◽  
Author(s):  
Kelsey E Schultz ◽  
Dominique C Denning ◽  
Vanessa Hufnagel ◽  
Nicole C Swann

Flexible, adaptive behavior is critically dependent on inhibitory control. For example, if you suddenly notice you are about to step on a tack and would prefer not to, the ability to halt your ongoing movement is critical. To address limitations in existing approaches for studying your ability to rapidly terminate your movement ('stopping'), we developed a novel stop task. This task requires termination of ongoing motor programs, provides a direct measure of SSRT, and allows for comparison of the same behavior (stopping) in conditions that elicit either prepared or reactive inhibitory control. Here, we present and evaluate our novel Continuous Movement Stop Task (CMST). We examined several versions of the task in a total of 49 participants. Our data reveal that the CMST is effectively able to dissociate stopping behavior between the planned and unplanned conditions. Additionally, within the subset of participants for which we measured speed, we found that participants initiated stopping (with respect to the stop signal) significantly earlier on planned stop compared to unplanned stop trials. Finally, participants took longer to arrive at full motor arrest (i.e. SSRT) following stop initiation on planned than on unplanned stop trials. This novel task design will enable a more precise quantification of stopping behavior and, in conjunction with neuroscientific methods, could provide more rigorous characterization of brain networks underlying stopping.


2021 ◽  
Author(s):  
Santiago Grau ◽  
Olivia Ferrández ◽  
Elena Martín-García ◽  
Rafael Maldonado

AbstractThere is an urgent need to ameliorate the transport of the reconstituted vaccines to the vaccination sites to improve the COVID-19 vaccination campaigns. The maintenance of the integrity of the mRNA of the different COVID-19 reconstituted vaccines after continuous movement at room temperature during at least three hours ensures the safety of a ground transportation.


2021 ◽  
Vol 274 ◽  
pp. 01027
Author(s):  
Laura Mucciolo

The significant put in crisis related to city, coupled to the renewed attention in confront of extra-urban context (inner territories), has rekindled the spotlights on countryside, as to semi-inhabited land, even to re-encode. This research is proposed to foreshadow a possible interpretative key on next future’s inhabit (under specific conditions), in the light of some visible changes which have already flourished in the Now, by using project as checking exercise of theorical research. Verona is scientific test bench, in which dualism city-countryside vanishes to the advancing of the wide and dense definition of «post-urban landscape». A vegetal-built basement, that radiates its tentacles in open/not-bound field, renewed cathedral protectress of life and evolution, structured (with project’s rules) with Super-Cartesian layers giving rise to a Hyper-rational mesh, jeopardized from obsessive and frequent interference. Chameleon monoliths, fixed objects in Continuous Movement as paradoxical reply to mutual adaptation’s dwelling, in which «not the strongest will survive, but the most suitable». This ability to adaptations is the key point on tomorrow’s questions, according to inhabiting as a form of «stamina», without that the rigid streamlining reduced dwelling to legislative and tabular count; but, going back to crucial questions involving, will always involve, the first and the last man. Psychedelic spatiality in which techè, shape and response line up in restless and controversial out-of-scales, as skeletal membranes. Super-Architectures, as total tool for life’s governance, unusual and redundant, last devices that translate culture and society’s knowledge.


Langmuir ◽  
2020 ◽  
Vol 36 (49) ◽  
pp. 15169-15180
Author(s):  
Yunrui Han ◽  
Shipeng Wang ◽  
Lin Han ◽  
Limin He ◽  
Xiaoming Luo

Author(s):  
Mustafa O. Attir ◽  
Mohamed Jouili ◽  
Ricardo René Larémont

Migration across the Sahara from the Sahel to North Africa is a longstanding practice. Its origins can be traced to 1500 BCE when three routes were established to traffic goods and people: the Ghadames road (from Gao in present Mali to Ghat, Ghadames, and Tripoli); the Garamantean road (from Kano and Lake Chad to Bilma, Murzuk, and then Tripoli); and the Oualata road (from what is now Mali to Sijilmasa in Morocco). Traffic increased significantly from the eighth to the seventeenth century CE when the principal commodities in trade were salt, gold, and slaves. These trading routes have continued to be used in the twentieth and twenty-first centuries, with people and commodities in continuous movement from the south to the north and vice versa. These contemporary patterns of mobility are examined in this chapter. Migrants are arriving in Libya and Tunisia, for the most part, from the neighboring countries of Egypt, Sudan, Chad, Niger, Burkina Faso, Mali, Côte d’Ivoire, and Cameroon. Migrants from these countries frequently settle in Libya or Tunisia, or are engaged in circular migration between Libya and Tunisia and their home countries.


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