Academic literature on the topic 'Recovery agitation'
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Journal articles on the topic "Recovery agitation"
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Carrão-Panizzi, Mercedes C., Silvana Pedroso de Goés Favoni, and Akio Kikuchi. "Extraction time for soybean isoflavone determination." Brazilian Archives of Biology and Technology 45, no. 4 (December 2002): 515–18. http://dx.doi.org/10.1590/s1516-89132002000600015.
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Studies were carried out on the optimization of the extraction procedures for isoflavones determination in soybean by HPLC. Isoflavones were extracted from 100 mg samples of full fat soybean flour "Kinako" (milled toasted grains). Recovery of average total isoflavones was higher when extraction was performed with agitation(217.2 mg/100g), than without agitation(191.0 mg/100g). Isoflavone extraction without agitation for 1,4, 20 and 24 hours, were equally efficient for total and individual compounds. These results suggested that an efficient isoflavone recovery could be achieved with extraction for one hour with agitation.
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Argumedo-Delira, Rosalba, Mario J. Gómez-Martínez, and Brenda Joan Soto. "Gold Bioleaching from Printed Circuit Boards of Mobile Phones by Aspergillus niger in a Culture without Agitation and with Glucose as a Carbon Source." Metals 9, no. 5 (May 7, 2019): 521. http://dx.doi.org/10.3390/met9050521.
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Hydrometallurgical and pyrometallurgical processes to recover gold (Au) from cell-phone printed circuit boards (PCBs) have the disadvantage of generating corrosive residues and consuming a large amount of energy. Therefore, it is necessary to look for biological processes that have low energy consumption and are friendly to the environment. Among the biological alternatives for the recovery of Au from PCB is the use of cyanogenic bacteria and filamentous fungi in cultures with agitation. Considering that it is important to explore the response of microorganisms in cultures without agitation to reduce energy expenditure in the recovery of metals from PCB, the present investigation evaluated the capacity of Aspergillus niger MXPE6 and a fungal consortium to induce Au bioleaching from PCB in a culture medium with glucose as a carbon source and without agitation (pH 4.5). The results indicate that the treatments with PCB inoculated with the fungal consortium showed a considerable decrease in pH (2.8) in comparison with the treatments inoculated with A. niger MXPE6 (4.0). The fungal consortium showed a significantly higher Au bioleaching (56%) than A. niger MXPE6 (17%). Finally, the use of fungal consortia grown without agitation could be an alternative to recover metals from PCB, saving energy and material resources.
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Kloepper, Joseph W., Walter F. Mahaffee, John A. McInroy, and Paul A. Backman. "Comparative analysis of five methods for recovering rhizobacteria from cotton roots." Canadian Journal of Microbiology 37, no. 12 (December 1, 1991): 953–57. http://dx.doi.org/10.1139/m91-164.
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A variety of methods have been used for recovering introduced bacteria from plant roots. The objective of this study was to compare systematically five methods: agitation in buffer, agitation with glass beads in buffer, mixing in a StomacherR lab-blender, sonication, and trituration with mortar and pestle. Cotton seeds were treated with two previously reported rhizobacterial strains, Pseudomonas fluorescens strain Pf-5 and Bacillus subtilis strain GB03. The efficiency of recovery by each method was determined 3 weeks later by comparing average bacterial populations from whole root systems, single 2.0-cm root segments, and two root regions (the uppermost 5 cm of taproot and the lowermost 5 cm). Treatment with the StomacherR blender yielded significantly higher (P = 0.05) mean populations of GB03 compared with all other methods and significantly higher mean populations of Pf-5 compared with agitation with glass beads. From the lowermost 5 cm of taproot, populations of Pf-5 recovered by the StomacherR treatment were significantly higher than all other methods. The inclusion of glass beads for agitation treatments resulted in neither consistently higher absolute numbers of recovered bacteria nor reductions in variability. The mean standard error of each recovery method varied among root sources, and no single method consistently had the highest or lowest mean standard error. Mean standard errors for strain GB03 were generally lower than those for Pf-5 with each root source and each method of recovery. When viewed in composite, the data suggest that the StomacherR treatment was the best for recovering the greatest absolute numbers of rhizobacteria; however, this treatment had high mean standard errors. Investigations of root colonization by introduced rhizobacteria should include several recovery methods to optimize recovered numbers or to decrease variability, depending on the experimental objectives. Key words: root colonization, rhizobacteria, Pseudomonas fluorescens, Bacillus subtilis, cotton.
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Hornn, Vothy, Mayumi Ito, Hiromasa Shimada, Carlito Baltazar Tabelin, Sanghee Jeon, Ilhwan Park, and Naoki Hiroyoshi. "Agglomeration-Flotation of Finely Ground Chalcopyrite and Quartz: Effects of Agitation Strength during Agglomeration Using Emulsified Oil on Chalcopyrite." Minerals 10, no. 4 (April 23, 2020): 380. http://dx.doi.org/10.3390/min10040380.
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In flotation, the size of mineral particles is one of the most important parameters: when the size becomes fine, collision efficiency of the particles and air bubbles becomes low, causing low flotation recovery. To improve the collision efficiency and flotation kinetics, agglomeration using the emulsified oil of finely ground chalcopyrite (D50 = 3.5 μm) was carried out before flotation. In this study, the effects of agitation strength during agglomeration, kerosene dosage and potassium amyl xanthate (KAX) dosage on the flotation were investigated. Agglomeration using emulsified oil improved Cu recovery because the median diameter of agglomerate increased. With increasing agitation strength, KAX and kerosene dosages, Cu recovery was further increased. Agglomeration-flotation of a mixture containing chalcopyrite and quartz with 1:1 ratio (w/w, weight by weight) showed that Si recovery in froth was low and did not change with varying conditions (agitation strength, KAX and kerosene dosages); however, Cu recovery was significantly improved with increasing agitation strength, KAX and kerosene dosages, and thus the separation efficiency was improved.
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Sabzghabaee, Ali Mohammad, Ahmad Yaraghi, Elham Khalilidehkordi, Seyyed Mohammad Mahdy Mirhosseini, Elham Beheshtian, and Nastaran Eizadi-Mood. "The Outcome of Agitation in Poisoned Patients in an Iranian Tertiary Care University Hospital." Neurology Research International 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/275064.
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Introduction. This study was conducted to evaluate and document the frequency and causes of agitation, the symptoms accompanying this condition in intoxications, relationship between agitation score on admission and different variables, and the outcome of therapy in a tertiary care referral poisoning center in Iran.Methods. In this prospective observational study which was done in 2012, 3010 patients were screened for agitation at the time of admission using the Richmond Agitation Sedation Scale. Demographic data including age, gender, and the drug ingested were also recorded. The patients’ outcome was categorized as recovery without complications, recovery with complications (hyperthermia, renal failure, and other causes), and death.Results. Agitation was observed in 56 patients (males,n=41), mostly aged 19–40 years (n=38) and more frequently in illegal substance (stimulants, opioids and also alcohol) abusers. Agitation score was not significantly related to the age, gender, and previous history of psychiatric disorders. Forty nine patients had recovery without any complication. The need for mechanical ventilation was the most frequent complication. None of the patients died.Conclusion. Drug abuse seems to be a must-to-consider etiology for patients presenting with acute agitation and its morbidity and mortality could be low in agitated poisoning cases if prompt supportive care is performed.
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Golik, Vladimir, Vladimir Morkun, Natalia Morkun, and Vitaliy Tron. "Investigation of Mechanochemical Leaching of Non-Ferrous Metals." Acta Mechanica et Automatica 13, no. 2 (June 1, 2019): 113–23. http://dx.doi.org/10.2478/ama-2019-0016.
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Abstract The research deals with metal extraction from off-grade ores and concentration tailings. There are provided results of simulating parameters of reagent leaching of metals in the disintegrator according to the metal recovery ratio. The research substantiates the method of waste-free processing of chemically recovered ores. Recovery of metals into solution is the same both under multiple leaching of tailings or ore in the disintegrator and agitation leaching of tailings or ore previously activated in the disintegrator with leaching solutions. The time of agitation leaching is more by two orders of magnitude than that of the disintegrator processing. Recovery of metals into solution is most affected by the content of sodium chloride in the solution. Then, in decreasing order, go the content of sulfuric acid in the solution, the disintegrator rotor rpm and L:S ratio.
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Doherty, Margaret H. "Benzodiazepine Sedation in Critically Ill Patients." AACN Advanced Critical Care 2, no. 4 (November 1, 1991): 748–61. http://dx.doi.org/10.4037/15597768-1991-4015.
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Agitation is a common phenomenon in critically ill patients. This multidimensional challenge can prolong illness, interfere with treatment, and harm the patient. The nurse must assess the cause of the agitation and provide effective, timely intervention. Agitation is defined as motor restlessness secondary to possible physiologic, psychologic, environmental, and pharmacologic causes. The nurse has many effective assessment tools to systematically determine the cause of the agitation, including an agitation algorithm and sedation scale. With astute assessment and intervention, agitation can be prevented and treated to enhance recovery from critical illness. Benzodiazepines are an effective treatment intervention for agitation. With thorough knowledge of the actions and potential effects of these drugs, the nurse can provide the best pharmacologic intervention to treat agitation in the critically ill patient
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Wang, Kai, Yi Qi Cui, Xiong Tong, Peng Dong, and Qi Meng. "Study on the Optimal Condition of a Copper-Bearing Gold Ore Cyanide Leaching Using Orthogonal Design." Advanced Materials Research 734-737 (August 2013): 1006–9. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.1006.
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The copper-bearing ore assays 1.7g/t Au, 50.43% Fe and 0.41% Cu. Recovered gold by cyanide leaching, in this study, the orthogonal test design was used to examine effects of NaCN dosage, leaching time, agitation intensity, particle size on gold leaching rate and determine the optimal operation combination for the purpose of increasing gold recovery. Gold extractions of 92.34% were achieved using a particle size of 90%-200 mesh, NaCN dosage of 1.8kg/t, leaching time of 36h and agitation rate of 400r/min.
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Charles S, Antony John, Raghuraman M S, Raji Sharma, and David George Veliath. "COMPARISON OF ORAL CLONIDINE WITH ORAL MIDAZOLAM IN MANAGING AGITATION FOLLOWING SEVOFLURANE ANESTHESIA – A PROSPECTIVE, RANDOMIZED, DOUBLE BLINDED STUDY." Asian Journal of Pharmaceutical and Clinical Research 9, no. 6 (November 1, 2016): 297. http://dx.doi.org/10.22159/ajpcr.2016.v9i6.14423.
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ABSTRACT:Objective: Emergence agitation is a major problem during recovery from anesthetic agents like sevoflurane, particularly in children. This study had compared the effects of oral clonidine with oral midazolam in reducing the incidence of emergence agitation following sevoflurane anesthesia.Methods: 50 children of ASA status I and II aged between 3-8 years were randomly allotted to one of the two groups, each group comprising 25 children. Group I children were given oral Midazolam 0.5 mg/kg and Group II children were given oral Clonidine 4 mcg/kg 30 min before the induction of anesthesia. Emergence reaction was analyzed using modified objective pain scale in all children following sevoflurane administration.Results: The total agitation score was significantly less in clonidine group in comparison to midazolam group during the first hour of post operative period (P<0.05).No remarkable change in the hemodynamics or oxygen saturation was observed in both groups.Conclusion: Premedication of oral clonidine 4 microgram per kg is superior to oral midazolam 0.5 mg per kg in reducing the incidence of emergence agitation following sevoflurane anesthesia.Keywords: sevoflurane, recovery, emergence agitation, clonidine, midazolam.
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Rochelle, Paul A., Ricardo De Leon, Anne Johnson, Mic H. Stewart, and Roy L. Wolfe. "Evaluation of Immunomagnetic Separation for Recovery of Infectious Cryptosporidium parvum Oocysts from Environmental Samples." Applied and Environmental Microbiology 65, no. 2 (February 1, 1999): 841–45. http://dx.doi.org/10.1128/aem.65.2.841-845.1999.
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ABSTRACT Two commercial immunomagnetic separation (IMS) kits forCryptosporidium were compared for recovery of oocysts from environmental samples. Oocyst recovery efficiencies with the Dynal and Crypto-Scan kits ranged from 62 to 100% and 34 to 74%, respectively, for seeded environmental water concentrates (turbidity of 210 to 11,480 nephelometric turbidity units). Recovery efficiencies were dependent on the mechanism of agitation during the magnetic capture procedure. An assay combining in vitro cell culture and reverse transcriptase PCR demonstrated that oocysts recovered by IMS retained their infectivity.
Books on the topic "Recovery agitation"
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Grewal, J. S. Master Tara Singh Loses Ground. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199467099.003.0025.
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After the failure of the Punjabi Suba agitation in 1960–1, Master Tara Singh began to lose ground in Akali politics. Sant Fateh Singh attributed this failure to him, and declared that his own conception of the Akali demand was fundamentally different from that of Master Tara Singh. Throughout 1963 the Sant conducted a systematic campaign against Master Tara Singh, underlining his weakness as a leader and highlighting his own commitment to the cause of the Sikh Panth. He claimed to represent the majority of the Akalis. The success of his nominee in the election for Presidentship of the SGPC in June 1964 confirmed his claim. It appeared before the end of the year that Master Tara Singh would never recover the lost ground. Early in 1965 he left the field free for Sant Fateh Singh and went to some unknown place.
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Whelehan, Niall. Changing Land. NYU Press, 2021. http://dx.doi.org/10.18574/nyu/9781479809554.001.0001.
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The Irish Land War (1879–82) represented a turning point in modern Irish history, a social revolution that was part of a broader ideological moment when established ideas of property and land ownership were fundamentally challenged. A striking aspect of the Land War was its internationalism, spurred by links between different emigrant locations and an awareness of how the Land League’s demands to lower rents, end evictions, and abolish “landlordism” in Ireland connected with wider radical and reform causes. Changing Land provides a detailed investigation of Irish emigrants’ multifaceted activism in Argentina, Scotland, England, the United States, and Ireland itself. It brings unfamiliar figures to the surface and recovers the voices of women and men who have long been on the margins of—or entirely missing from—existing accounts. Retracing these transnational lives reveals new layers of radical circuitry between Ireland and disparate international locations and demonstrates how the Irish land agitation intersected with a range of oppositional movements in the nineteenth century.
Book chapters on the topic "Recovery agitation"
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"Assessment of Agitation During the Acute Phase of Recovery." In Recovery After Traumatic Brain Injury, 143–52. Psychology Press, 2014. http://dx.doi.org/10.4324/9781315806198-17.
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Masip, Nuria. "Postoperative care." In Paediatric Anaesthesia, 141–50. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780198755791.003.0008.
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After surgery, and before being transferred to the ward, patients will be recovered in a specially designated area: the recovery area or post-anaesthetic care unit (PACU). In recovery, there are some postoperative problems that we need to be familiar with managing: postoperative nausea and vomiting (PONV), emergence delirium (it is important to recognize it, and be able to differentiate it from agitation) and pain. Those patients who need postoperative critical care will be admitted to a high-dependency unit (HDU) or paediatric intensive care unit (PICU), depending on their required level of care. Each time the patient is transferred to a different area, a thorough handover between the giving and receiving team is paramount. This chapter provides the reader with the means to manage common recovery problems, and an understanding of patient postoperative dependency levels.
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"Emergence Agitation After Sevoflurane vs. Propofol in Pediatrics." In 50 Studies Every Anesthesiologist Should Know, edited by Anita Gupta, Elena N. Gutman, Michael E. Hochman, Anita Gupta, Elena N. Gutman, and Michael E. Hochman, 268–72. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190237691.003.0050.
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This case focuses on what sort of anesthesia to use in young children undergoing small procedures by asking the question: Does maintenance of anesthesia with propofol after sevoflurane induction reduce the incidence of emergence agitation compared with continuing sevoflurane for maintenance? In a randomized, single-blinded, two-period, crossover study, 16 pediatric patients underwent repeat eye examinations under general anesthesia. Study participants were pediatric patients 1 to 5 years of age diagnosed with retinoblastoma requiring routine eye examination under general anesthesia on a regular basis. In these preschool children undergoing noninvasive, repeat eye examinations under general anesthesia, emergence agitation occurred more frequently after maintenance with sevoflurane compared with propofol. Sevoflurane maintenance resulted in statistically faster recovery times but lower parent satisfaction scores.
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Reznik, Michael E., and Amy K. Wagner. "Rehabilitation in Neurocritical Care." In Neurocritical Care, edited by Samuel A. Tisherman and Sara Hefton, 286–96. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199375349.003.0027.
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Rehabilitation is a process that should begin in the neurointensive care unit. Once a rough prognosis has been made within the context of goals of care discussions, and a decision has been made to proceed with measures geared toward recovery, the focus of clinical care should begin to shift toward the transition to rehabilitation in order to maximize functional gains. In the acute care setting, this necessitates the collaboration of a multidisciplinary team, including physical medicine and rehabilitation, physical and occupational therapy, speech and language pathology, neuropsychology, social work, and nursing. Among the most challenging issues facing intensivists and the rehabilitation team in the critical care setting is the management of the various rehabilitation-related medical complications associated with acquired brain injury, including decreased level of arousal, agitation, sleep disturbances, depression, dysautonomia, bowel and bladder dysfunction, and spasticity. This chapter highlights current management strategies for dealing with these issues.
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Shah, Shailee S., and Marie F. Grill. "Rapidly Progressive Memory Loss, Mood Change, Mutism, and Abnormal Movements." In Mayo Clinic Cases in Neuroimmunology, edited by Andrew McKeon, B. Mark Keegan, and W. Oliver Tobin, 83–85. Oxford University Press, 2021. http://dx.doi.org/10.1093/med/9780197583425.003.0025.
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A 24-year-old woman sought care for 2 weeks of disorientation and short-term memory difficulties, as well as diffuse tremor of all extremities. She returned with further decline in memory and new severe headaches. She had intermittent agitation and emotional outbursts of crying or laughing, insomnia, spells consisting of disorganized speech and episodes of intermittent right gaze deviation with facial twitching and lip smacking. She was nearly mute. Her appetite had decreased and she had not had a bowel movement in several days. She was noted to have significant tachycardia and was intermittently febrile. Within several days she became unresponsive to all external stimuli, with nonpurposeful eye movements and frequent dyskinesias observed, and ultimately required ventilator support. Testing of the cerebrospinal fluid showed 236 white blood cells/µL, mildly increased protein concentration of 50 mg/dL, and normal glucose values. Electroencephalography initially demonstrated generalized slowing and generalized periodic epileptiform discharges and was also notable for an extreme delta brush pattern. Bilateral ovarian masses were identified on pelvic ultrasonography, and subsequent computed tomography of the abdomen and pelvis showed bilateral teratomas. An autoimmune encephalitis autoantibody panel was positive for antibodies targeting the N-methyl-d-aspartate receptor in the serum and cerebrospinal fluid, by both cell-based and immunofluorescence assays. The patient was diagnosed with anti- N-methyl-d-aspartate receptor encephalitis. The patient initially received intravenous methylprednisolone, followed by intravenous immunoglobulin. Benzodiazepines and propranolol were used to manage agitation and dysautonomia. Antiepileptic drugs were initiated for seizures. She required mechanical ventilation and parenteral nutrition given her persistent profound encephalopathic state. She underwent left ovarian cystectomy and right salpingo-oophorectomy. This patient’s history highlights the progressive clinical features characteristic of anti- N-methyl-d-aspartate receptor encephalitis and the long but often complete or near-complete recovery.
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Mariotto, Sara, Silvia Bozzetti, Maria Elena De Rui, Fulvia Mazzaferri, Andrew McKeon, and Sergio Ferrari. "Altered Mental Status During the COVID-19 Pandemic." In Mayo Clinic Cases in Neuroimmunology, edited by Andrew McKeon, B. Mark Keegan, and W. Oliver Tobin, 254–56. Oxford University Press, 2021. http://dx.doi.org/10.1093/med/9780197583425.003.0083.
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In March 2020, a 68-year-old man with a history of pulmonary thromboembolism sought care at the emergency department for fever, cough, headache, and confusion. Because of severe respiratory failure, orotracheal intubation was required, and the patient was admitted to the intensive care unit, where bilateral deep vein thrombosis and hematemesis occurred. After 2 weeks, owing to respiratory improvement, the patient was weaned from ventilator support and sedation. However, persistent fluctuations in confusion, anxiety, agitation, and cognitive-motor slowing were noted. One week later, he was referred to the infectious diseases unit, where altered mental status persisted in the absence of fever, seizures, or episodes of impaired consciousness. Chest radiography showed small, bilateral, ground-glass opacities. Brain magnetic resonance imaging showed bilateral involvement of mesial temporal lobes and hippocampus on fluid-attenuated inversion recovery sequences, in the absence of contrast enhancement or restricted diffusion. Nasopharyngeal samples were positive for SARS-CoV-2 on reverse transcriptase–polymerase chain reaction testing. Cerebrospinal fluid examination showed a slight increase in protein concentration, 1 white blood cell/µL, and no evidence of central nervous system infection. In particular, SARS-CoV-2 RNA was not detected. The patient was diagnosed with postinfectious inflammatory (limbic) encephalitis in the course of SARS-CoV-2 infection. The patient was treated with lopinavir/ritonavir and hydroxychloroquine. His recent thromboembolism prevented the administration of intravenous immunoglobulins, and high-dose corticosteroids were not administered because of the recent episode of hematemesis. Improvement in cognitive symptoms was noted 6 weeks after onset. At the time of this writing, May 2020, a few cases of encephalitis after COVID-19 had already been described. These have generally been characterized by fever, cognitive dysfunction, epileptic seizures, coma, and cerebrospinal fluid inflammatory findings. It appears that a common magnetic resonance imaging appearance in these patients is that of diffuse inflammatory encephalitis.
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Shorter, Edward. "Drugs." In How Everyone Became Depressed. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199948086.003.0013.
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History has always known antidepressant remedies. In an era of faith, the faithful held to the Word as an augury of recovery: “cast down, but not destroyed.” But in a secular era and certainly by the middle of the twentieth century, pharmacological remedies were required. Indeed they were urgently indicated, for the diagnosis of depression itself was starting to spread. Because of Kraepelin and Freud, by 1940 depression had become a common term for serious psychiatric disease. An editorial in the Lancet called depression “perhaps the most unpleasant illness that can fall to the lot of man.” Depression was thus, while not terribly common, a considerable public health issue. What is puzzling in this story is that around 1940 depression began an inexorable, irreversible climb from awful but unusual to epidemic status. With the 1960s, depression started to become epidemic. One reason for the upswing in depression in mid-twentieth century was the cheering of the pharmaceutical industry. The drugs of the first generation of psychoactive medications were indicated for nervous disease, but there after the firms switched to depression because here were clearly the markets of the future. The early drugs represented an effective treatment for nervous disease. Their effect was sedation, and sedative drugs in medical practice go back to opium and to members of the belladonna family that have been known since Ancient times. Sedation means the process of calming, or allaying excitement. It does not necessarily involve the obtunding of consciousness, although large doses of sedatives may do that. Sedation means easing the pain of being, soothing the griefs and worries of existence, and calming the depressive and anxious agitation of the nervous syndrome. Although we all have worries and anxieties, we do not all have a pathological syndrome called nervousness. Historically, it was those with nerves who benefited from the early psychopharmacological treatments, beginning with the bromides at mid-nineteenth century. The first sedative made by chemical synthesis, chloral hydrate, was used clinically in 1869. A succession of sedatives from the organic chemical industry followed.
Conference papers on the topic "Recovery agitation"
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Voghell, Mark Louis, Assaad Kamel Mohanna, Christopher Hanley, Cristinel Al-Khiriseh, Ahmed Al-Mousa, and Ali Al-Amri. "Downhole Vibration Analysis: Fishing Agitation Tool Efficiency in Stuck Pipe Recovery." In SPE/IADC Middle East Drilling Technology Conference & Exhibition. Society of Petroleum Engineers, 2013. http://dx.doi.org/10.2118/166745-ms.
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Voghell, Mark, Assaad Mohanna, Christopher Hanley, Cristinel Al-Khiriseh, Ahmed Mousa, and Ali Al-Amri. "Downhole Vibration Analysis: Fishing Agitation Tool Efficiency in Stuck Pipe Recovery." In SPE/IADC Drilling Conference. Society of Petroleum Engineers, 2013. http://dx.doi.org/10.2118/163516-ms.
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Virgínio, Maria Eduarda Cunha, Lara Hessmann Gonzalez, Rafael Rodrigues Pinheiro dos Santos, Ana Carla Mondek Rampazzo, Gabrielli Algazal Marin, Mariana Ramos do Nascimento, Igor Ruan de Araújo Caetano, Maria Letícia Nogueira, José Ângelo Favoreto Guarnieri, and Carlos Alexandre Martins Zicarelli. "The use of Amantadine in Cognitive and Behavioral Recovery After Severe Cranioencephalic Trauma: A Systematic Review." In XIII Congresso Paulista de Neurologia. Zeppelini Editorial e Comunicação, 2021. http://dx.doi.org/10.5327/1516-3180.572.
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Background: Traumatic brain injury (TBI) is the main cause of death among individuals between 1 and 44 years of age, and severe TBI is associated with a mortality rate between 30% and 70%. In this context, randomized clinical trials have studied medications to reduce morbidity in severe TBI, one of which is Amantadine. This drug acts on the increase of extracellular dopamine and as an NMDA antagonist. Objectives: Developing a systematic review of systematic reviews to evaluate the efficacy of Amantadine in reducing morbidity in patients with severe TBI. Methodology: The search was conducted in the PubMed, Embase, Cochrane Library, and Portal Regional BVS databases. Results: Eleven systematic reviews were included. The literature review of 7 articles demonstrated the efficacy of treatment with Amantadine in the following clinical aspects after TBI: aggression, irritability, agitation, mood, and attention deficit. On the other hand, one article did not consider the use of Amantadine significantly beneficial, due to increased agitation in critically ill patients, suggesting that there is worsening of the condition in individuals with cognitive, executive, memory, and attention symptoms. Therefore, three studies reported that there was not enough evidence for the use of this drug in patients with severe TBI. Conclusions: The results are heterogeneous. However, this study found good efficacy of Amantadine for cases of agitation/aggression in severe TBI and in cases of diffuse axonal lesion that compromises the glutamate pathways.
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Mohammed, Nuhu, Abubakar Abbas J., and Godpower Enyi C. "Experimental Study on Gas Reservoir Pore Pressure Changes During Natural Gas Recovery and CO2 Storage in Porous Medium." In SPE Nigeria Annual International Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/211971-ms.
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Abstract Much research has been conducted to determine the impact of gas injection settings on residual natural gas recovery and CO2 sequestration. However, little research has been conducted on how reservoir pore pressure varies during natural gas displacement by CO2 flooding. Using a core flooding experiment, this article examined the effects of gas injections on reservoir pore pressure and compression ratio. A core flooding experiment was done at 30-40 °C and 1500 psig to investigate the effect of gas injections on reservoir pore pressure and compression ratio. The CO2 injection rate and N2 booster volume were adjusted to 0.2-1.2 ml/min and 8-36 cm3, respectively. Because of the turbulence effect, high mean interstitial velocity raises the molecular kinetic energy of the gas species, which subsequently influences the molecular agitation of the gas species and so alleviates reservoir pressure and gas compression. The typical CO2 injection experiments revealed substantial compression and pore pressure rises as the injection rate increased. The trial with N2 as a booster resulted in a steady increase, which explains their low dispersion coefficient value. As a result, there is less gas mixing and compression compared with typical CO2 flooding.
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Bite, Dina, and Zenija Kruzmetra. "Review on the Consumers’ Response to the Covid-19 Crisis in Latvia." In 22nd International Scientific Conference. “Economic Science for Rural Development 2021”. Latvia University of Life Sciences and Technologies. Faculty of Economics and Social Development, 2021. http://dx.doi.org/10.22616/esrd.2021.55.054.
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The regulations for restricting the Covid-19 virus set by the Latvian government, which entered into force on March 13, 2020, caused significant changes in the operation of outlets and consumer behavior. At the onset of the emergency, Latvia, like many parts of the world, experienced uncoordinated collective behavior that could potentially lead to significant changes in food supply chains. Therefore, one of the research directions of The National Research Program project “Towards the Post-pandemic Recovery: Economic, Political and Legal Framework for the Preservation of Latvia's Growth Potential and Increasing Competitiveness” (recovery-LV) (2020) was to find out how the Covid-19 crisis Restrictions have changed buyers' habits towards buying and consuming food. The article summarizes and analyses the research results of the content analysis, semi-structured interviews and survey conducted within the project. An analysis of the results shows that, as a result of the crisis, consumers are less likely to visit outlets, cook more often at home and choose more locally sourced food. It was concluded that the consumer agitation regarding the purchase of food products in 2020 was short-lived, which later returned to the usual limits of the habits of various socio-demographic groups of the population.
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Arai, M., Y. Koizumi, and H. Ohtake. "Study on Heat Transfer and Flow Analysis of 5×5 and 5×1 Mini-Tube Bank of Micro Heat Exchanger." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-41608.
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Heat transfer and flow behavior in the mini rod bank were examined. The tube bank was simulated with 5 wires of 1 mm diameter. The wires were arranged on the center line of the flow channel of 30 mm wide, 15 mm high and 300 mm long. The pitch between wires were varied from 1.5 mm to 9 mm. Experiments were performed in the range of the rod Re = 1 ∼ 400, i.e. the flow velocity in the channel was in the range of 0.0036 m/s ∼ 0.34 m/s. The measured heat transfer coefficients of the first row were a little bit higher than, rather close to, the predicted values by the correlations. The heat transfer coefficients after the second row were lower than those of the first row. The difference between those increased as the Reynolds number was increased. Around Reynolds number = 100, the difference turned to decrease. After the occurrence of the heat transfer coefficient recovery in the rows after the second row, the deeper the row was, the larger the heat transfer coefficient was. The flow visualization results and the analytical results by the STAR-CD code indicated that when the Reynolds number was low, the wake region of the preceding rod was stagnant. This flow stagnation caused the heat transfer coefficient deterioration around the stagnation point of the rear rod. As the Reynolds number was increased, the flow state in the wake region changed from the stagnant condition to the more disturbed condition by periodical shedding of the Karman vortex from the preceding rod. This agitation of the wake region by the vortices caused the recovery of the deteriorated heat transfer coefficients. The deeper the row was, the more disturbed the wake flow state was. The measured average heat transfer coefficients of the tube bank agreed well with the analytical results by the STAR-CD code. The measured and the analyzed results were close to the predicted values by correlations.
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Causse, Jeremy, Cyril Roussignol, Jean-Franc¸ois Vale´ry, and Jean-Charles Hamel. "New Degreasing Formulations for the Decontamination of Solid Substrates, Consistent With Concentration and Vitrification Process of the Final Wastes." In ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2011. http://dx.doi.org/10.1115/icem2011-59166.
Full textAbstract:
Decontamination facilities use various techniques to decontaminate solid substrates. The aim of these facilities is either to recover the substrate for a future second life, or to sufficiently lower the radioactivity level in order to reduce the final volume of high activity waste. One of these techniques remains in aqueous bathes under ultrasonic agitation. This technique is very suitable for the decontamination of small metallic pieces. Most of those pieces are covered with various greases or organic oils very resistant to classical aqueous washes. Thus, this oily layer contains some unfixed radionuclides that must be removed to reach the aimed decontamination factor. This urged decontamination facilities operating staff to consider additive molecules necessary to render aqueous washes consistent with such a contamination. These molecules, namely surfactants, act on the liquid surface to increase affinity between aqueous and oily phases. The surfactant formulations commonly used in French decontamination facilities are standard industrial formulations (F1, F2). Those formulations are generally designed by international manufacturers to be consistent with several applications. Thus, there isn’t any specific formulation fitted to nuclear applications. Today, according to potential modification of the final wastes conditioning matrix (for instance glass matrix instead of bitumen matrix), this standard formulations use could move to the use of some dedicated formulations for nuclear use. The glass matrix and related effluents concentration process required effluents with controlled chemical composition with regard to the presence of radionuclides. However, the composition of the industrial formulations used until today are not precisely known (according to trade secret), and sometimes can contain molecules unfitted to the final waste vitrification process. For instance, some sodium silicates are used to bring basic properties to the surfactant formulations whereas this kind of compounds is quite inappropriate to the concentration process (possible formation of gel in nitric acid with high concentration of silicates). The present study deals with the potential replacement of these industrial formulations by other ones with controlled chemical composition and concentration. Each new formulation consists of an assembly of well-known surfactants. The first stage of this study involves the degreasing power evaluation for every formulation. Solid and liquid greases detachment is assessed thanks to different techniques. For instance, the study of liquid greases detachment is achieved thanks to a CCD camera. The contact angle between the solid substrate and the grease is followed up during the degreasing step. This allows us to draw degreasing kinetics so as to compare the formulation effectiveness including industrial ones. The second stage of this work presents decontamination factor achieved during real operations with the new designed formulations. These tests were performed in an industrial decontamination facility and the efficiency of the new formulations is compared to the standard industrial ones.
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Mirande, Juan Martin, Giovanni Palombizio, Lucas Arevalo, Alejandro Marro, Marcelo Rodriguez, Raul Krasuk, and Matias Vecchietti. "Novel Coiled Tubing Post-Fracturing Cleanout of Unconventional Wells Without Downhole Motor: A Case Study from Argentina." In SPE/ICoTA Well Intervention Conference and Exhibition. SPE, 2023. http://dx.doi.org/10.2118/212943-ms.
Full textAbstract:
Abstract Unconventional wells that are completed with plug-and-perf fracturing techniques require coiled tubing (CT) to mill the plugs. In Argentina, CT must mill upwards of 60 plugs to bring the well into production. The CT downhole motors are leading contributors to service quality incidents because: 1) they mill challenging materials over extended periods of time, and 2) they limit the pump rate, which reduces cleanout effectiveness and increases the risk of stuck pipe. A completion campaign selected soluble plugs instead of composite ones to improve efficiency. Initial CT runs were still completed with a milling bottomhole assembly (BHA) to address the risk of low plug solubility. However, as evidenced during the initial campaign runs, the plugs dissolved nearly completely, leaving only the steel buttons inside the well. Those buttons required a high pump rate to carry them to surface. Given the excellent plug dissolution and the fluid velocity requirement to clean out buttons, the BHA was simplified to an extended reach tool (ERT) and a customized, high-rate jetting nozzle, thus eliminating the downhole motor. The new and simplified BHA extended the pump rate limit from an average of 3.8 to 4.5 bbl/min with no adverse effect on circulating pressure. The operator observed a tenfold increase in the number of plug buttons recovered at surface, which reduced the risk of stuck CT pipe during interventions in those wells. The cleanout speed was also increased, reducing total operating time by 25%, costs, and diesel consumption. A special procedure was developed for the cases when the BHA encountered consolidated sand and plug debris during the operations, a situation that occurred an average of three times per well. To clean those accumulations, the pump rate was increased to generate high jetting energy and stronger ERT agitation, and the CT was run in hole at slow speed until tagging the solids. This procedure allowed passing all the restrictions found during the execution of the CT cleanout jobs. This approach also made it possible to clean wells with known casing deformations, a common situation in Argentina unconventional wells. Over the course of 44 wells, 13 were cleaned with the simplified BHA. This new approach addressed the two main sources of nonproductive time before initiation of the project: BHA failures decreased from 16% to 8% and no CT stuck pipe event occurred. This is the first published case study of a post-fracturing cleanout in an unconventional well without the use of a downhole motor and which, instead, combined soluble plugs and a tailored BHA. Eliminating the downhole motor in this application significantly improved operational reliability and efficiency. The use of this simplified BHA to clean the well down to total depth is only possible with a good dissolution performance of the plugs present in the well.