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Journal articles on the topic 'Blocage de contenu'

Author: Grafiati

Published: 15 June 2024

Last updated: 31 July 2025

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1

Baillargeon, Dany, Alexandre Coutant, Marie-Eve Carignan, Elyse Dionne, and Mikaëlle Tourigny. "Confrontations et convergences éthiques entre marketing et information autour de la publicité native." Revue Communication & professionnalisation, no. 5 (December 5, 2017): 28–53. http://dx.doi.org/10.14428/rcompro.vi5.863.

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La perméabilité de la division information/publicité dans les salles de rédaction fait récursivement l’objet de débats au sein de l’industrie journalistique. Mus par des logiques différentes, univers marketing et journalistique sont supposés se prémunir de toute influence mutuelle. L’arrivée des plateformes socio numériques, l’éclatement du modèle économique des médias d’information et l’irritation face à l’intrusion publicitaire et les stratégies de blocage encouragent de nouveaux chevauchements, dont la publicité native (PN). Les différentes justifications ou critiques de cette technique con

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Déchoz, Jacques. "CHSCT. Fonctionnement – 1° Contenu des séances – Délibérations – Preuve – Procès-verbal établi par le Secrétaire – Attestations contraires et constats d’huissier – Preuve contraire rapportée (non) – 2° Expertise – Demande de réunion extraordinaire par deux membres du CHSCT – Blocage patronal – Trouble manifestement illicite – Suspension d’un projet d’aménagement modifiant les conditions de travail." Le Droit Ouvrier N° 830, no. 9 (2017): 555–59. http://dx.doi.org/10.3917/drou.830.0555.

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3

Lu, Chen, Jinhua Xu, Long Wang, et al. "Analysis of the Influencing Factors of Crystalline Blockages in Mountain Tunnel Drainage Systems Based on Decision Analysis Methods." Applied Sciences 13, no. 6 (2023): 3721. http://dx.doi.org/10.3390/app13063721.

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Crystalline blockages in mountain tunnel drainage systems are becoming a common environmental problem. Considering the lack of research on the influence degree of the factors affecting crystalline blockages in mountain tunnel drainage systems, this paper classified and evaluated the importance of relevant factors through decision analysis methods. Our purpose is to provide a comprehensive understanding of the primary factors causing crystalline blockages in tunnels. The influence factors are selected and categorized through a literature review, and then the influence factors are screened twice

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4

Kashcheev, I. D., A. B. Finkel’shteyn, A. E. Glyzina, A. A. Shefer, A. V. Shak, and V. D. Silivanov. "Possibility of using unshaped thermal insulation of aluminum alloy castings." NOVYE OGNEUPORY (NEW REFRACTORIES), no. 9 (November 25, 2022): 52–56. http://dx.doi.org/10.17073/1683-4518-2022-9-52-56.

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The possibility of using diatomite from the Ilyinsky deposit as an unshaped thermal insulation for open risers of castings from aluminum alloys of different alloying systems: technical aluminum A5, AK7, AMg10, VAL10 has been studied. It was found that when the continuity of the oxide film on the surface of a diatomite particle is broken, an exchange reaction occurs with the formation of a silicon transition layer. Since silicon is wetted by aluminum, the diatomite particle sinks in the melt, forming a blockage. As a criterion for the continuity of the oxide film, it is proposed to use the Pill

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5

Yang, Wei, Zhongyan Wang, Baosheng An, et al. "Early warning system for ice collapses and river blockages in the Sedongpu Valley, southeastern Tibetan Plateau." Natural Hazards and Earth System Sciences 23, no. 9 (2023): 3015–29. http://dx.doi.org/10.5194/nhess-23-3015-2023.

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Abstract. The Tibetan Plateau and its surroundings have recently experienced several catastrophic glacier-related disasters. It is of great scientific and practical significance to establish ground-based early warning systems (EWSs) to understand the processes and mechanisms of glacial disasters and warn against potential threats to downstream settlements and infrastructure. However, there are few sophisticated EWSs on the Tibetan Plateau. With the support of the Second Tibetan Plateau Scientific Expedition and Research Program (STPSER), an EWS was developed and implemented in the Sedongpu Val

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6

Fayolle, Jacky, and Françoise Milewski. "L'offre devance la demande." Revue de l'OFCE 55, no. 4 (1995): 5–94. http://dx.doi.org/10.3917/reof.p1995.55n1.0005.

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Résumé Après l'accélération prononcée de l'activité et du commerce mondiaux en 1994, le ralentissement intervenu depuis le début 1995 est largement généralisé au sein des pays de l'OCDE. Le manque de dynamisme de la consommation et le déficit de confiance des ménages en est un facteur général, même si cette caractéristique commune participe de phases différentes du cycle conjoncturel, selon les pays. Les pays anglo-saxons, spécialement les États-Unis, sont en voie de connaître une fin de cycle sans drame, prolongée par le recours au crédit à la consommation. Au Japon, la faiblesse de la consom

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Dong, Wenting, Dong Zhang, Keliang Wang, and Yue Qiu. "Investigation on degradation mechanism of polymer blockages in unconsolidated sandstone reservoirs." e-Polymers 20, no. 1 (2020): 55–60. http://dx.doi.org/10.1515/epoly-2020-0006.

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AbstractPolymer flooding technology has shown satisfactorily acceptable performance in improving oil recovery from unconsolidated sandstone reservoirs. The adsorption of the polymer in the pore leads to the increase of injection pressure and the decrease of suction index, which affects the effect of polymer flooding. In this article, the water and oil content of polymer blockages, which are taken from Bohai Oilfield, are measured by weighing method. In addition, the synchronous thermal analyzer and Fourier transform infrared spectroscopy (FTIR) are used to evaluate the composition and function

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Ruan, Zhuen, Yong Wang, Aixiang Wu, Shenghua Yin, and Fei Jin. "A Theoretical Model for the Rake Blockage Mitigation in Deep Cone Thickener: A Case Study of Lead-Zinc Mine in China." Mathematical Problems in Engineering 2019 (January 22, 2019): 1–7. http://dx.doi.org/10.1155/2019/2130617.

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Deep cone thickener (DCT) is key equipment in cemented paste backfill (CPB) technology. However, rake blockage occurs frequently in DCT during the dewatering process of the unclassified tailings being thickened from dilute slurry to thickened tailings or paste. Rake blockage has disastrous effects on the CPB operation. In order to investigate the influencing factors of rake blockage in DCT, a mathematical model of rake power in DCT was developed. In addition, stacking mud bed (made of thickened tailings) from the DCT in Huize lead-zinc mine (HLZM) in different rake blockage accidents was sampl

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9

Yao, Lei, Fangfang Ma, Jie Peng, Jianbo Zhang, Yangjun Zhang, and Jianpeng Shi. "Analysis of the Failure Modes in the Polymer Electrolyte Fuel Cell Cold-Start Process—Anode Dehydration or Cathode Pore Blockage." Energies 13, no. 1 (2020): 256. http://dx.doi.org/10.3390/en13010256.

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In this study, the cold-start failure processes of a polymer electrolyte fuel cell have been investigated numerically for different initial membrane water content λ 0 and the startup current densities I 0 . The result shows that the failure of the cell cold-start process is mostly attributed to the anode dehydration when the cell operates with relatively large current density. However, the failure is dominated by the cathode pore blockage when the cell starts with relatively high initial membrane water content. Corresponding maps for the classification of startup failure modes are plotted on t

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10

Johnston, R. N., J. Feder, A. B. Hill, S. W. Sherwood, and R. T. Schimke. "Transient inhibition of DNA synthesis results in increased dihydrofolate reductase synthesis and subsequent increased DNA content per cell." Molecular and Cellular Biology 6, no. 10 (1986): 3373–81. http://dx.doi.org/10.1128/mcb.6.10.3373-3381.1986.

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We examined the role that blockage of cells in the cell cycle may play in the stimulation of gene amplification and enhancement of drug resistance. We found that several different inhibitors of DNA synthesis, which were each able to block cells at the G1-S-phase boundary, induced an enhanced cycloheximide-sensitive synthesis of an early S-phase cell cycle-regulated enzyme, dihydrofolate reductase, and of other proteins as well. This response was specific, in that blockage at the G2 phase did not result in overproduction of the enzyme. When the cells were released from drug inhibition, DNA synt

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Johnston, R. N., J. Feder, A. B. Hill, S. W. Sherwood, and R. T. Schimke. "Transient inhibition of DNA synthesis results in increased dihydrofolate reductase synthesis and subsequent increased DNA content per cell." Molecular and Cellular Biology 6, no. 10 (1986): 3373–81. http://dx.doi.org/10.1128/mcb.6.10.3373.

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We examined the role that blockage of cells in the cell cycle may play in the stimulation of gene amplification and enhancement of drug resistance. We found that several different inhibitors of DNA synthesis, which were each able to block cells at the G1-S-phase boundary, induced an enhanced cycloheximide-sensitive synthesis of an early S-phase cell cycle-regulated enzyme, dihydrofolate reductase, and of other proteins as well. This response was specific, in that blockage at the G2 phase did not result in overproduction of the enzyme. When the cells were released from drug inhibition, DNA synt

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12

Jary, Marine, Christophe Borg, Olivier Bouché, Stéfano Kim, Thierry André, and Jaafar Bennouna. "Traitements anti-angiogéniques dans le cancer colorectal métastatique : peut-on envisager un blocage continu de l’angiogenèse ?" Bulletin du Cancer 102, no. 9 (2015): 758–71. http://dx.doi.org/10.1016/j.bulcan.2015.05.002.

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13

Nanul, Angela Marici, and Mufidatul Islamiyah. "Optimization of Digital Marketing Using Search Engine Optimization (SEO) at Soevenir CV Saudagar Kaya Abadi Malang." Jurnal Pengabdian Masyarakat 5, no. 2 (2024): 751–56. https://doi.org/10.32815/jpm.v5i2.2280.

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Purpose: This study aims to explore the effectiveness of digital marketing using Search Engine Optimization (SEO) on social media platforms for CV Saudagar Kaya Abadi Malang. The research focuses on the challenges of account blockages on social media and how SEO can improve content visibility and sales. Method: A descriptive qualitative approach was used, with data collected through observations and interviews. The study analyzed current SEO strategies and identified issues related to social media account blockages, proposing solutions to overcome them. Practical Applications: The findings off

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14

Lu, Zhongdeng, Zulin Chen, and Wei Xie. "A Study on the Material Composition and Traceability of the Wellhead Blockage in the Process of Oil and Gas Exploitation—A Case of the DH231 Well in the Tarim Basin, China." Applied Sciences 13, no. 3 (2023): 1504. http://dx.doi.org/10.3390/app13031504.

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The formation of wellhead blockage increases operating costs and seriously affects the safe production of oil wells. It is crucial to correctly analyze the blockage composition and determine the reasons for wellhead blockage to improve the production efficiency of oil wells. In this study, the material composition and origin of the wellhead blockage in Well DH231 are systematically investigated by means of a thin-section observation, scanning electron microscope, energy spectrum analysis, and molecular geochemical characterization of organic matter. The results show that the wellhead blockage

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15

Wu, Ai Xiang, Gao Hui Yao, and Ming Qing Huang. "Influence Factors of Permeability during Heap Leaching of Complex Copper Oxide Ore." Advanced Materials Research 347-353 (October 2011): 1037–43. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.1037.

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In order to explore the influence factors of permeability during heap leaching of Yangla copper ore in China, falling head permeability test was applied to draw a comparison between the permeability of various samples, and then permeability evolutionary law of the sample ore from leaching heap was analyzed under different ore size or compaction degree. Finally, acid leaching experiments was carried out to reveal the influential mechanism of heap blockage on its permeability. The data show that the permeability coefficient of washed ore is 12.7 times than that of raw ore; permeability coefficie

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16

Zhang, Jiabao, and Dingqi Li. "Research on Optimization of Large Flow Hydraulic Punching Process in Zhaozhuang Mine." Geofluids 2022 (December 29, 2022): 1–14. http://dx.doi.org/10.1155/2022/7535215.

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Taking hydraulic punching test of Zhaozhuang Mine as engineering background, by comparing the field application effects of different hydraulic punching processes, the relationship between coal moisture content around the borehole blockage and gas extraction effect was monitored and analyzed. The following conclusions were drawn: the occurrence of borehole blockage was the result of the comprehensive action of coal slag particle size and slag discharge capacity of punching return water. Blocking the borehole led to the accumulation of a large amount of punching high-pressure water and coal slag

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17

Li, Jinfeng, Huie Chen, Xiaoqing Yuan, and Wenchong Shan. "Analysis of the Effectiveness of the Step Vacuum Preloading Method: A Case Study on High Clay Content Dredger Fill in Tianjin, China." Journal of Marine Science and Engineering 8, no. 1 (2020): 38. http://dx.doi.org/10.3390/jmse8010038.

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As a solution to avoid the blockage of the drainage pipe by traditional vacuum preloading, step vacuum preloading (SVP) has been progressively studied. However, the effectiveness of this technique has yet to be systematically analyzed. In this study, an indoor model test was conducted in which vacuum pressure was applied in five stages (10, 20, 40, 60, and 80 kPa) to dredger soil with high clay content at a reclamation site in Binhai New Area, Tianjin, China. The extent of the consolidation effect of the soil was determined, and the effectiveness of the step vacuum preloading method to address

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18

Machado, Florencio J. D. M., Juan Marta-Enguita, Susan U. Gómez, et al. "Transcriptomic Analysis of Extracellular Vesicles in the Search for Novel Plasma and Thrombus Biomarkers of Ischemic Stroke Etiologies." International Journal of Molecular Sciences 25, no. 8 (2024): 4379. http://dx.doi.org/10.3390/ijms25084379.

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Accurate etiologic diagnosis provides an appropriate secondary prevention and better prognosis in ischemic stroke (IS) patients; still, 45% of IS are cryptogenic, urging us to enhance diagnostic precision. We have studied the transcriptomic content of plasma extracellular vesicles (EVs) (n = 21) to identify potential biomarkers of IS etiologies. The proteins encoded by the selected genes were measured in the sera of IS patients (n = 114) and in hypertensive patients with (n = 78) and without atrial fibrillation (AF) (n = 20). IGFBP-2, the most promising candidate, was studied using immunohisto

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Wang, Hui, Gang Ling, Mingyu Hu, Wene Wang, and Xiaotao Hu. "Physical Clogging Characteristics of Labyrinth Emitters under Low-Quality (Sand-Laden Water) Irrigation." Agronomy 12, no. 7 (2022): 1615. http://dx.doi.org/10.3390/agronomy12071615.

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Drip irrigation technology has obvious advantages in solving the shortage of agricultural water. The demand for using low-quality water sources for irrigation is becoming urgent. Research on the physical blockage formation has become the main part of solving the emitter blockage in China. The purpose of this study is to investigate the blockage characteristics of the emitters in the drip irrigation system with a low-quality water source and to provide some basis for the anti-clogging measures. Therefore, we configured different concentrations (1.8 g/L, 2.8 g/L, 3.8 g/L) and different particle

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Sladek, C. D., K. Y. Fisher, H. E. Sidorowicz, and J. R. Mathiasen. "Osmotic stimulation of vasopressin mRNA content in the supraoptic nucleus requires synaptic activation." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 268, no. 4 (1995): R1034—R1039. http://dx.doi.org/10.1152/ajpregu.1995.268.4.r1034.

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The role of synaptic input to the vasopressin neurons in hypertonicity-induced increase in vasopressin mRNA content was evaluated. Synaptic connection with the anterior hypothalamus is required for hypertonicity to increase vasopressin release. However, the potential for other mechanisms to induce the increase in vasopressin mRNA content is suggested by the fact that hypertonicity induces depolarization of supraoptic neurons independently of synaptic input. Explants of the hypothalamoneurohypophysial system were used to study the effect of depolarization and hypertonicity in the presence and a

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Sia, T. C., S. J. Brookes, P. G. Dinning, D. A. Wattchow, and N. J. Spencer. "Peristalsis and propulsion of colonic content can occur after blockade of major neuroneuronal and neuromuscular transmitters in isolated guinea pig colon." American Journal of Physiology-Gastrointestinal and Liver Physiology 305, no. 12 (2013): G933—G939. http://dx.doi.org/10.1152/ajpgi.00257.2013.

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We recently identified hexamethonium-resistant peristalsis in the guinea pig colon. We showed that, following acute blockade of nicotinic receptors, peristalsis recovers, leading to normal propagation velocities of fecal pellets along the colon. This raises the fundamental question: what mechanisms underlie hexamethonium-resistant peristalsis? We investigated whether blockade of the major receptors that underlie excitatory neuromuscular transmission is required for hexamethonium-resistant peristalsis. Video imaging of colonic wall movements was used to make spatiotemporal maps and determine th

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Inoue, Masaru, Michael McHugh та Hanna M. Pappius. "The Effect of α-Adrenergic Receptor Blockers Prazosin and Yohimbine on Cerebral Metabolism and Biogenic Amine Content of Traumatized Brain". Journal of Cerebral Blood Flow & Metabolism 11, № 2 (1991): 242–52. http://dx.doi.org/10.1038/jcbfm.1991.56.

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Widespread decrease in local cerebral glucose utilization (LCGU) previously shown to occur 3 days after a focal freezing lesion was interpreted as reflecting a depression of functional activity in the affected areas. In parallel experiments, cortical norepinephrine (NE) content of traumatized brain was found to be decreased. The effects of prazosin (PZ), an α1-adrenergic receptor blocker, and yohimbine (YOH), an α2-blocker, on glucose use and biogenic amine content of lesioned rat brain were studied to determine if the changes in the noradrenergic system associated with injury are of functiona

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Correll, Christoph U. "Switching and Combining Antipsychotics." CNS Spectrums 15, S6 (2010): 8–11. http://dx.doi.org/10.1017/s1092852900027693.

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Pharmacologic knowledge can inform clinical decision-making, particularly the dosing and switching decisions made with antipsychotics. Of relevance are the pharmacokinetic (what does the body do to the drug) and the pharmacodynamic (what does the drug do to the body) properties of antipsychotics.The goal of antipsychotic dosing is to achieve sufficient dopa-mine blockade in areas where dopamine excess can lead to psychosis, mania, or aggression. Using positron emission topography, one investigation showed that response rates were considerably higher in patients who achieved >65% striatal do

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Robinson, Matthew M., Christopher Bell, Frederick F. Peelor та Benjamin F. Miller. "β-Adrenergic receptor blockade blunts postexercise skeletal muscle mitochondrial protein synthesis rates in humans". American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 301, № 2 (2011): R327—R334. http://dx.doi.org/10.1152/ajpregu.00160.2011.

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β-Adrenergic receptor (AR) signaling is a regulator of skeletal muscle protein synthesis and mitochondrial biogenesis in mice. We hypothesized that β-AR blockade blunts postexercise skeletal muscle mitochondrial protein synthesis rates in adult humans. Six healthy men (mean ± SD: 26 ± 6 yr old, 39.9 ± 4.9 ml·kg−1·min−1 peak O2 uptake, 26.7 ± 2.0 kg/m2 body mass index) performed 1 h of stationary cycle ergometer exercise (60% peak O2 uptake) during 1) β-AR blockade (intravenous propranolol) and 2) administration of saline (control). Skeletal muscle mitochondrial, myofibrillar, and sarcoplasmic

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Khairunnisak, Khairunnisak, Rasyadhifa As Sahira, Aini Syafitri, et al. "Literature Review: Microplastic Content in the Digestive Tracts of Fish in Indonesian Waters." International Journal of Health Sciences 2, no. 2 (2024): 752–66. http://dx.doi.org/10.59585/ijhs.v2i2.397.

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Plastic waste is the biggest problem that is happening in Indonesia. Plastic waste has resistance and the nature of Persiden. Increased production and low recovery rates cause accumulation of plastic flakes in waters called microplastic. Microplastic has the potential to be swallowed by aquatic biota that can cause internal bleeding and blockage of the digestive tract. Hue microplastic will affect humans who consume them. One of the aquatic biota that is often contaminated by microplastic is fish. Research related to microplastic contamination in the digestive tract of fish has often been carr

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Subramanian, Srividya, and Regis R. Vollmer. "Depletion of brown fat norepinephrine content by acute cold exposure and adrenoceptor blockade." Pharmacology Biochemistry and Behavior 68, no. 3 (2001): 597–602. http://dx.doi.org/10.1016/s0091-3057(01)00457-9.

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Longhurst, J. C., T. I. Musch, and G. A. Ordway. "O2 consumption during exercise in dogs--roles of splenic contraction and alpha-adrenergic vasoconstriction." American Journal of Physiology-Heart and Circulatory Physiology 251, no. 3 (1986): H502—H509. http://dx.doi.org/10.1152/ajpheart.1986.251.3.h502.

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To examine the influence of alpha-adrenergic vasoconstriction on the aerobic capacity of dogs, we calculated O2 consumption (VO2) by the Fick method during submaximal and maximal exertion before and during alpha-adrenergic blockade with phentolamine. Regional blood flow was measured with radioactive microspheres. alpha-Adrenergic receptor blockade reduced VO2 by 12.9% during submaximal and 17.9% during maximal exercise. Arterial and venous lactic acid approximately doubled during both levels of stress in the presence of alpha-adrenergic receptor blockade. Calculated VO2 decreased because arter

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Polkowski, George R. "Degradation of Reservoir Quality by Clay Content, Unayzah Formation, Central Saudi Arabia." GeoArabia 2, no. 1 (1997): 49–64. http://dx.doi.org/10.2113/geoarabia020149.

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ABSTRACT Reservoirs in Central Saudi Arabia are important new sources of light sulfur-free crude oil. Development work on these wells has shown the adverse effect of authigenic clay minerals on their productivity or injectivity. The clay minerals may be affected during drilling of the well, during completion, during production, and/or injection. Kaolinite, chlorite, illite, and ordered and random mixed layer illite/smectite are commonly occurring authigenic clay minerals within the Permian Unayzah reservoir rock. As little as 2 weight percent clay causes permeability to be drastically reduced.

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Pearson, Mike, Glen Van Der Kraak, and E. Don Stevens. "In vivo pharmacology of spleen contraction in rainbow trout." Canadian Journal of Zoology 70, no. 3 (1992): 625–27. http://dx.doi.org/10.1139/z92-091.

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Rainbow trout, Oncorhynchus mykiss, were injected with an adrenergic agonist, an adrenergic antagonist, or a cholinergic antagonist, via a dorsal aorta cannula. Spleen size and haemoglobin content were measured at rest and, for antagonists, following an air exposure stress. Injection of phentolamine (an α-antagonist) blocked the spleen contraction induced by air exposure, suggesting that control is mediated by α-adrenergic receptors. Air exposure effects were unaffected by β-adrenergic blockade or muscarinic cholinergic blockade.

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Wang, Xueyong, Qingbo Wang, Kathrin L. Engisch, and Mark M. Rich. "Activity-Dependent Regulation of the Binomial Parameters p and n at the Mouse Neuromuscular Junction In Vivo." Journal of Neurophysiology 104, no. 5 (2010): 2352–58. http://dx.doi.org/10.1152/jn.00460.2010.

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Block of neurotransmission at the mammalian neuromuscular junction triggers an increase in the number of vesicles released (quantal content). The increase occurs whether nerve and muscle activity are both blocked by placement of a tetrodotoxin (TTX) containing cuff on the nerve or whether muscle activity is selectively blocked by injection of α-bungarotoxin (BTX). We used ANOVA to examine whether the mechanism underlying the increase in quantal content differed between the two types of activity blockade. We found that TTX-induced blockade increased the probability of release ( p), whereas BTX-

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Verma, S., S. Bhanot, and J. H. McNeill. "Effect of chronic endothelin blockade in hyperinsulinemic hypertensive rats." American Journal of Physiology-Heart and Circulatory Physiology 269, no. 6 (1995): H2017—H2021. http://dx.doi.org/10.1152/ajpheart.1995.269.6.h2017.

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Evidence suggests that hyperinsulinemia may be causally related to the development of high blood pressure (BP) in fructose-hypertensive (FH) rats. Because plasma insulin has been shown to modulate endothelin (ET) release in vivo, we hypothesized that hyperinsulinemia may provide a continual stimulus for ET release, which could increase BP by altering plasma or blood vessel ET levels. To test this hypothesis, we studied the effect of chronic ET-receptor blockade (by using bosentan, a noncompetitive ET antagonist) on plasma insulin levels, plasma ET levels, blood vessel ET content, and BP in FH

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Ho, Adrienne K., Anthony M. H. Ho, and Glenio B. Mizubuti. "Blockage of the tracheal bronchus: effects on blood oxygen content, partial pressure of oxygen, and intrapulmonary shunt." Advances in Physiology Education 42, no. 2 (2018): 383–86. http://dx.doi.org/10.1152/advan.00017.2018.

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Fathy, Mahmoud, Abeer El Shahawy, Th Abdel Moghny, and Ayman Nafady. "Enhanced desalination process using a Cu–ZnO-polyvinyl chloride-nylon nanofiltration membrane as a calcite antiscalant in reverse osmosis." Materials Express 10, no. 5 (2020): 671–79. http://dx.doi.org/10.1166/mex.2020.1677.

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Treatment and cleaning of reverse osmosis (RO) membranes saturated with CaCO3/brine is a main issue in RO desalination processes. Herein, a Cu–ZnO-polyvinyl chloride (PVC)-nylon nanofiltration membrane was synthesized and utilized to minimize and/or eliminate CaCO3/brine during RO, along with probing the effects of Cu–ZnO antiscalant on calcite precipitation in normal aqueous and supersaturated CaCO3/brine solutions. Moreover, decreases in Ca2+ content over time were evaluated by electrical conductivity and pH measurements. Results revealed that Cu–ZnO nanocomposite substantially increases ind

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Zhao, Zhen, Guangxiong Qin, Yinfei Luo, et al. "Experimental Study on Reservoir Physical Properties and Formation Blockage Risk in Geothermal Water Reinjection in Xining Basin: Taking Well DR2018 as an Example." Energies 14, no. 9 (2021): 2671. http://dx.doi.org/10.3390/en14092671.

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The Xining Basin in Qinghai Province, China, is rich in mid–low temperature geothermal resources, but the reinjection of geothermal water has not yet started. In this paper, the physical properties of rocks sampled from the newly drilled geothermal well DR2018 were analyzed, and a series of core flooding experiments was conducted to assess the formation blockage risk during water reinjection. The experimental results show that the geothermal reservoir has a low porosity of 1.64–18.68% and a low permeability of 0.04–7.23 md. The rocks are weakly consolidated, and the movable clay and sand parti

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Meng, Xingbang, Minhui Qi, Zhan Meng, Tong Li, and Zhongxiao Niu. "Visual Experimental Study on Gradation Optimization of Two-Stage Gravel Packing Operation in Unconventional Reservoirs." Energies 12, no. 8 (2019): 1519. http://dx.doi.org/10.3390/en12081519.

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During the development of unconventional reservoirs with high sand production rate and fine silt content such as heavy oil and hydrate reservoirs, silt sand blockage problem is a serious issue. A two-stage gravel-packing sand control technique is applied to solve the silt sand blockage now. However, traditional experiments on this technique could not obtain the dynamic distribution law of intrusive sand in the gravel pack. In this study, a new visualization experiment based on hydrodynamic similarity criterion for studying particle blockage in gravel packs was conducted. Real-time monitoring o

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Brunetto de Farias, Caroline, Denis Broock Rosemberg, Tiago Elias Heinen, et al. "BDNF/TrkB Content and Interaction with Gastrin-Releasing Peptide Receptor Blockade in Colorectal Cancer." Oncology 79, no. 5-6 (2010): 430–39. http://dx.doi.org/10.1159/000326564.

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Castillo, Jenny, Joanne Curley, Joyce Hotz, et al. "Glucocorticoids Prolong Rat Sciatic Nerve Blockade In Vivo from Bupivacaine Microspheres." Anesthesiology 85, no. 5 (1996): 1157–66. http://dx.doi.org/10.1097/00000542-199611000-00025.

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Background Previous work showed that incorporation of dexamethasone (0.05 weight/weight percentage) into bupivacaine microspheres prolonged blockade by eight to 13 times compared with that produced by bupivacaine microspheres alone. The determinants of dexamethasone's block-prolonging effect were examined and reported here. Methods Polylactic-co-glycolic acid polymer microspheres (65/35) with 75 weight/weight percentage bupivacaine were prepared. Microspheres were injected adjacent to the rat sciatic nerve, and sensory and motor blockade were assessed. A procedure was developed to test drugs f

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Pu, Shijie, Huimin Kou, Qiju Li, Yangrong Song, Fan Tang, and Zhiwei Jia. "Research and Application of Chemical Sand Control without Blockage in WellBore." Journal of Physics: Conference Series 2834, no. 1 (2024): 012201. http://dx.doi.org/10.1088/1742-6596/2834/1/012201.

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Abstract The main sand control methods for oil production wells in a certain Oilfield include mechanical filling sand control, artificial well bore reconstruction with coated sand, and phenolic resin sand control. Mechanical filling for sand control requires the well bore to be intact, with residual pipe columns in the well that cannot meet the testing fluid profile, and subsequent processing often requires major repairs; The construction pressure of artificial well bore is high, and the production of chemical resin sand control is significantly reduced. In order to ensure the consolidation st

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Abdelazim, Abotaleb, Mahmoud Abu El Ela, Ahmed El-Banbi, and Helmy Sayyouh. "Successful approach to mitigate the asphaltenes precipitation problems in ESP oil wells." Journal of Petroleum Exploration and Production Technology 12, no. 3 (2021): 725–41. http://dx.doi.org/10.1007/s13202-021-01335-7.

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AbstractThis study introduces a comprehensive and cost-effective approach to diagnose and treat the asphaltenes precipitation problems in different downhole conditions. The proposed approach has been successfully applied in two oil wells (Well-I, and Well-II) located in the Western Desert of Egypt. The two wells produce oil of moderate to high oil gravity with low asphaltenes content using Electrical Submersible Pumps (ESP). In such operating conditions, solid deposits caused blockage at the pump intake and within the pumping stages in the two wells. This blockage led to a sharp decrease in oi

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Li, Yu, Meilong Fu, Baofeng Hou, Zhiyuan Zhang, and Ruiyi Sun. "Experimental Study on Blockage Mechanism and Blockage Locations for Polymer-Flooded Reservoirs in the Henan Oilfield." Geofluids 2021 (April 16, 2021): 1–11. http://dx.doi.org/10.1155/2021/6669921.

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To address the issues of reservoir blockage and sharp decline in fluid output of production wells in the polymer injection zone of the Henan oilfield, physical modeling has been used to study the blockage mechanism and blockage locations of the polymer-flooded reservoir based on oil reservoir characteristics and blockage knowledge. The results show that all the constant pressures in the low, moderate, and high permeability cores subjected to polymer injection and subsequent waterflooding were higher than the constant pressure during primary waterflooding; hence, polymer retention and blockage

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Chang, Peng, Rui Xue Shi, Li Wang, Wei Han, Cong Dan Ye, and Yun Ma. "Study on Source Analysis of the Cation in Produced Water from Sulige Gas Field and Anti-Scaling Measures." Key Engineering Materials 814 (July 2019): 505–10. http://dx.doi.org/10.4028/www.scientific.net/kem.814.505.

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A large amount of foreign matter appears in the Sulige gas well, causing blockage and corrosion of the pipeline, increasing the pressure difference in the wellbore and seriously affecting the normal production of the gas well. The gas wells with serious conditions mentioned above were selected to analyze the quality of single well produced water and the composition of blockage and core. Combined with the XRD analysis results of the cuttings, the long-term leaching experiments on the cuttings in different simulated solutions were carried out to study the sources of scaled ions in the gas wells.

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Manzoor, Ayesha, Muhammad Bashir, Muhammad Naveed, Muhammad Akhtar, and Shaista Saeed. "Postharvest Chemical Treatment of Physiologically Induced Stem End Blockage Improves Vase Life and Water Relation of Cut Flowers." Horticulturae 10, no. 3 (2024): 271. http://dx.doi.org/10.3390/horticulturae10030271.

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Wound-induced xylem occlusion significantly affects the vase life of cut flowers, as oxidative stress and the polymerization of phenolic compounds lead to the deposition of phenolic compounds/secondary metabolites in the stem ends of cut flowers to heal open tissues of freshly cut stems and prevent microbial invasion. However, this deposition causes blockage of vessels, reduced water uptake, and shortened vase life. The physiological plugging of vessels is linked with various oxidative enzymes’ (PAL, PPOs, LACs, and COs) actions taken to increase the synthesis of different compounds, e.g., lig

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Wang, Hongwei, Yan Zhang, Yinglong Song, et al. "ClO2 Prolongs the Vase Life of Paeonia lactiflora ‘Hushui Dangxia’ Cut Flowers by Inhibiting Bacterial Growth at the Stem Base." Horticulturae 10, no. 7 (2024): 732. http://dx.doi.org/10.3390/horticulturae10070732.

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Rapid wilting after harvest greatly decreases the ornamental and economic value of fresh-cut flowers. To determine how chlorine dioxide (ClO2) affects postharvest flower quality, Paeonia lactiflora ‘Hushui Dangxia’ cut flowers in bottles were treated with different concentrations of ClO2 (0, 25, 50, 75, and 100 mg L−1). Among the treatments, ClO2 75 (i.e., 75 mg L−1) decreased the bacterial growth and lignin content at the P. lactiflora flower stem base, while also decreasing the degree of flower stem vessel blockage. Additionally, the ClO2 75 treatment increased the relative fresh weight, wat

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Laurentiu, Prodea, Chis Timur, Bogdan Florin, and Andreea Lupu Diana. "Numerical Simulation in Gas Hydrate Formation." International Journal of Current Science Research and Review 08, no. 05 (2025): 2498–505. https://doi.org/10.5281/zenodo.15524687.

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Abstract : The formation of gas hydrates is an undesirable process in the natural gas transportation industry, ensuring the blockage of pipelines and especially the reduction of transport flows and the increase of working pressure. That is why it is necessary to simulate the water adsorption processes using chemicals as well as the mathematical simulation of the processes. The article presents data on the simulation stages and especially the behavior of natural gas with water content in main pipelines.

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Mateo Pérez, Vanesa, José Manuel Mesa Fernández, Francisco Ortega Fernández, and Joaquín Villanueva Balsera. "Gross Solids Content Prediction in Urban WWTPs Using SVM." Water 13, no. 4 (2021): 442. http://dx.doi.org/10.3390/w13040442.

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The preliminary treatment of wastewater at wastewater treatment plants (WWTPs) is of great importance for the performance and durability of these plants. One fraction that is removed at this initial stage is commonly called gross solids and can cause various operational, downstream performance, or maintenance problems. To avoid this, data from more than two operation years of the Villapérez Wastewater Treatment Plant, located in the northeast of the city of Oviedo (Asturias, Spain), were collected and used to develop a model that predicts the gross solids content that reaches the plant. The su

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Francini, Flavio, María C. Castro, Juan J. Gagliardino, and María L. Massa. "Regulation of liver glucokinase activity in rats with fructose-induced insulin resistance and impaired glucose and lipid metabolism." Canadian Journal of Physiology and Pharmacology 87, no. 9 (2009): 702–10. http://dx.doi.org/10.1139/y09-064.

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We evaluated the relative role of different regulatory mechanisms, particularly 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase (PFK2/FBPase-2), in liver glucokinase (GK) activity in intact animals with fructose-induced insulin resistance and impaired glucose and lipid metabolism. We measured blood glucose, triglyceride and insulin concentration, glucose tolerance, liver triglyceride content, GK activity, and GK and PFK2 protein and gene expression in fructose-rich diet (FRD) and control rats. After 3 weeks, FRD rats had significantly higher blood glucose, insulin and triglyceride levels,

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Wang, Sunan, Litao Chen, Lei Guo, et al. "Investigation on the Hydrate Blockage Avoidance Performance of Two Anti-Agglomerants and Their Mixture with PVP." Molecules 30, no. 2 (2025): 308. https://doi.org/10.3390/molecules30020308.

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The hydrate blockage avoidance performance of two anti-agglomerants (coconut amidopropyl dimethylamine, propylene bis (octadecylamidopropyl dimethylammonium chloride)) and their mixtures with polyvinylpyrrolidone (PVP) was tested in a high-pressure rocking cell apparatus. The effect of gas–liquid ratio, water content and PVP concentration were analyzed. A method for evaluating the kinetic inhibiting and anti-agglomerating performance of hydrate inhibitors was established. It was found that coconut amidopropyl dimethylamine had good anti-agglomerating performance at a low gas–liquid ratio (0.5)

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van Baak, M. A., A. de Haan, W. H. Saris, E. van Kordelaar, H. Kuipers, and G. J. van der Vusse. "Beta-adrenoceptor blockade and skeletal muscle energy metabolism during endurance exercise." Journal of Applied Physiology 78, no. 1 (1995): 307–13. http://dx.doi.org/10.1152/jappl.1995.78.1.307.

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Twelve healthy male volunteers cycled to exhaustion at a workload corresponding to 70% of maximal aerobic power after administration of 80 mg of the beta 1+2-adrenoceptor antagonist propranolol and after administration of placebo by mouth. Exercise times until exhaustion were 39 +/- 7 and 86 +/- 7 min in the propranolol and placebo groups, respectively. Muscle inosine 5′-monophosphate content was significantly increased above resting levels at exhaustion after placebo. At exhaustion after propranolol, inosine 5′-monophosphate was not increased significantly and was lower than at exhaustion aft

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Gharaibeh, Raad Z., Wildson Vieira da Silva, Rachel Newsome, et al. "6 – Intestinal Microbial Functional Content Better Defines Therapeutic Responses to Immune Checkpoint PD-1 Blockade." Gastroenterology 156, no. 6 (2019): S—2. http://dx.doi.org/10.1016/s0016-5085(19)36778-2.

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Beggar, Awatif. "Quelques facteurs à prendre en considération pour réussir son cours en ligne." Médiations et médiatisations, no. 2 (November 15, 2019): 107–16. http://dx.doi.org/10.52358/mm.vi2.88.

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Les innovations numériques sont de plus en plus nombreuses dans le domaine de l’enseignement. Ces nouvelles pratiques nécessitent la prise en considération de certains paramètres pour un meilleur apprentissage. En effet, l’effet de la fascination technologique ou "la pseudo-autonomie" des apprenants peuvent inhiber l’apprentissage et constituer des points de blocage dans le processus de l’enseignement en ligne. Quant à la littératie numérique, la scénarisation des contenus, la proposition d’activités et de projets pour motiver les étudiants, ils peuvent fonder une nouvelle relation au savoir à

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