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Artykuły w czasopismach na temat „Tans Model”

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Data publikacji: 6 września 2023

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1

Timaxian, Colin, Christoph F. A. Vogel, Charlotte Orcel, et al. "Pivotal Role for Cxcr2 in Regulating Tumor-Associated Neutrophil in Breast Cancer." Cancers 13, no. 11 (2021): 2584. http://dx.doi.org/10.3390/cancers13112584.

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Chemokines present in the tumor microenvironment are essential for the control of tumor progression. We show here that several ligands of the chemokine receptor Cxcr2 were up-regulated in the PyMT (polyoma middle T oncogene) model of breast cancer. Interestingly, the knock-down of Cxcr2 in PyMT animals led to an increased growth of the primary tumor and lung metastasis. The analysis of tumor content of PyMT-Cxcr2−/− animals highlighted an increased infiltration of tumor associated neutrophils (TANs), mirrored by a decreased recruitment of tumor associated macrophages (TAMs) compared to PyMT an

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Benson, Douglas D., Xianzhong Meng, David A. Fullerton, et al. "Activation state of stromal inflammatory cells in murine metastatic pancreatic adenocarcinoma." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 302, no. 9 (2012): R1067—R1075. http://dx.doi.org/10.1152/ajpregu.00320.2011.

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The histologic presence of macrophages (tumor-associated macrophages, TAMs) and neutrophils (tumor-associated neutrophils, TANs) has been linked to poor clinical outcomes for solid tumors. The exact mechanism for this association with worsened prognosis is unclear. It has been theorized that TAMs are immunomodulated to an alternatively activated state and promote tumor progression. Similarly, TANs have been shown to promote angiogenesis and tumor detachment. TAMs and TANs were characterized for activation state and production of prometastatic mediators in an immunocompetent murine model of pan

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Zhou, Zhengjun, Pengcheng Wang, Rongqi Sun, et al. "Tumor-associated neutrophils and macrophages interaction contributes to intrahepatic cholangiocarcinoma progression by activating STAT3." Journal for ImmunoTherapy of Cancer 9, no. 3 (2021): e001946. http://dx.doi.org/10.1136/jitc-2020-001946.

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BackgroundTumor-associated neutrophils (TANs) and macrophages (TAMs) can each influence cancer growth and metastasis, but their combined effects in intrahepatic cholangiocarcinoma (ICC) remain unclear.MethodsWe explored the distributions of TANs and TAMs in patient-derived ICC samples by multiplex immunofluorescent staining and tested their separate and combined effects on ICC in vitro and in vivo. We then investigated the mechanistic basis of the effects using PCR array, western blot analysis and ELISA experiments. Finally, we validated our results in a tissue microarray composed of primary t

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Han, Booyeon Julia, Luis I. Ruffolo, Katherine M. Jackson, et al. "Investigating the tumor-immune microenvironment in an autochthonous murine model of cholangiocarcinoma." Journal of Clinical Oncology 37, no. 8_suppl (2019): 53. http://dx.doi.org/10.1200/jco.2019.37.8_suppl.53.

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53 Background: Cholangiocarcinoma (CCA) is the most common liver malignancy within the biliary tree with increasing incidence and poor survival. Although surgical resection can be curative, prognosis remains abysmal with high rates of unresectability and recurrence, and new systemic therapies are needed. CCA tumors are characterized by an abundant inflammatory immune cell infiltrate, yet little is known about the immune dynamics underlying the disease. Here, we present a preclinical murine model of CCA for identifying potential targets susceptible to immune-based therapies. Methods: Mice with

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Ashby, F. Gregory, and Matthew J. Crossley. "A Computational Model of How Cholinergic Interneurons Protect Striatal-dependent Learning." Journal of Cognitive Neuroscience 23, no. 6 (2011): 1549–66. http://dx.doi.org/10.1162/jocn.2010.21523.

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An essential component of skill acquisition is learning the environmental conditions in which that skill is relevant. This article proposes and tests a neurobiologically detailed theory of how such learning is mediated. The theory assumes that a key component of this learning is provided by the cholinergic interneurons in the striatum known as tonically active neurons (TANs). The TANs are assumed to exert a tonic inhibitory influence over cortical inputs to the striatum that prevents the execution of any striatal-dependent actions. The TANs learn to pause in rewarding environments, and this pa

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McAteer, Emily, and Simone Pulver. "The Corporate Boomerang: Shareholder Transnational Advocacy Networks Targeting Oil Companies in the Ecuadorian Amazon." Global Environmental Politics 9, no. 1 (2009): 1–30. http://dx.doi.org/10.1162/glep.2009.9.1.1.

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Transnational advocacy networks (TANs) targeting corporations differ from those targeting states in the strategies they employ, determinants of network effectiveness, and assessments of goal achievement. This article develops a corporate boomerang model to analyze the dynamics of corporate-focused TANs. The model is used to assess two case studies of corporate-focused TANs—targeting the US-based oil corporations Chevron and Burlington Resources—active in Ecuador's Amazon region. In both TANs, corporate shareholder activists played a central role in the networks. The comparison demonstrates tha

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7

Beniwal, Angad, Saket Jain, Sumedh Shah, et al. "TAMI-38. TUMOR-ASSOCIATED NEUTROPHILS IN GLIOBLASTOMA PROMOTE THE PERIVASCULAR GLIOMA STEM-LIKE CELL NICHE VIA OSTEOPONTIN SECRETION." Neuro-Oncology 23, Supplement_6 (2021): vi206. http://dx.doi.org/10.1093/neuonc/noab196.822.

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Abstract Among clinical analyses, elevated neutrophil-lymphocyte ratio has been correlated with poor outcomes of glioblastoma patients independent of other prognostic factors. Additionally, our flow cytometric studies of primary patient samples found neutrophil percentage to be significantly higher in higher-grade glioma versus lower-grade glioma. Tumor-associated neutrophils (TANs) comprise less than 2% of the glioblastoma microenvironment. While TANs were initially considered passive bystanders due to their short-lived nature, investigation of TANs in other cancers revealed distinct pro-tumo

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Vannitamby, Amanda, Mohamed I. Saad, Christian Aloe, et al. "Aspirin-Triggered Resolvin D1 Reduces Proliferation and the Neutrophil to Lymphocyte Ratio in a Mutant KRAS-Driven Lung Adenocarcinoma Model." Cancers 13, no. 13 (2021): 3224. http://dx.doi.org/10.3390/cancers13133224.

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Tumour-associated neutrophils (TANs) can support tumour growth by suppressing cytotoxic lymphocytes. AT-RvD1 is an eicosanoid that can antagonise neutrophil trafficking instigated by ALX/FPR2 ligands such as serum amyloid A (SAA). We aimed to establish whether SAA and ALOX5 expression associates with TANs and investigate the immunomodulatory actions of AT-RvD1 in vivo. MPO-positive neutrophils were quantified in tumour blocks from lung adenocarcinoma (n = 48) and control tissue (n = 20) by IHC. Tumour expression of SAA and ALOX5 were analysed by RTqPCR and an oncogenic KrasG12D lung adenocarci

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9

Tan, Can Ozan, and Daniel Bullock. "A Dopamine–Acetylcholine Cascade: Simulating Learned and Lesion-Induced Behavior of Striatal Cholinergic Interneurons." Journal of Neurophysiology 100, no. 4 (2008): 2409–21. http://dx.doi.org/10.1152/jn.90486.2008.

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The giant cholinergic interneurons of the striatum are tonically active neurons (TANs) that respond with pauses to appetitive and aversive cues and to novel events. Whereas tonic activity emerges from intrinsic properties of these neurons, glutamatergic inputs from intralaminar thalamic nuclei and dopaminergic inputs from midbrain are required for genesis of pause responses. No prior computational models encompass both intrinsic and synaptically gated dynamics. We present a mathematical model that robustly accounts for behavior-related electrophysiological properties of TANs in terms of their

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Lad, Meeki, Angad Beniwal, Saket Jain, Sabraj Gill, and Manish Aghi. "TMIC-59. GLIOBLASTOMA INDUCES THE DIFFERENTIATION AND RECRUITMENT OF NON-CANONICAL ANTI-TUMORAL NEUTROPHILS FROM SKULL BONE MARROW." Neuro-Oncology 24, Supplement_7 (2022): vii284—vii285. http://dx.doi.org/10.1093/neuonc/noac209.1103.

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Abstract The effects of tumor-associated neutrophils (TANs) on glioblastoma biology remain poorly understood. Flow cytometric analysis of 5 newly diagnosed glioblastoma fresh tissue specimens surprisingly revealed a high fraction (21.0-34.1%) of TANs expressed MHCII, a marker of antigen-presenting cells not classically associated with neutrophils and not expressed in matched peripheral blood (PBNs). Transcriptomic profiling confirmed that patient TANs upregulated expression of MHCII subunits (HLA-DR), chaperones (HLA-DM), and costimulatory ligands (CD86/83). Ex vivo cocultures further demonstr

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Zheng, Wei, Jingjing Wu, Yao Peng, Jing Sun, Pu Cheng, and Qi Huang. "Tumor-Associated Neutrophils in Colorectal Cancer Development, Progression and Immunotherapy." Cancers 14, no. 19 (2022): 4755. http://dx.doi.org/10.3390/cancers14194755.

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The colorectal-cancer (CRC) incidence rate and mortality have remained high for several years. In recent years, immune-checkpoint-inhibitor (ICI) therapy has rapidly developed. However, it is only effective in a few CRC patients with microsatellite-instability-high (MSI-H) or mismatch-repair-deficient (dMMR) CRC. How to improve the efficiency of ICI therapy in CRC patients with microsatellite stability (MSS) remains a huge obstacle. Tumor-associated neutrophils (TANs), which are similar to macrophages, also have N1 and N2 phenotypes. They can be recruited and polarized through different cytoki

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12

Yee, Patricia, Yiju Wei, Zhijun Liu, et al. "TMIC-15. HYPERACTIVATING THE HIPPO PATHWAY EFFECTOR TAZ DIFFERENTIALLY DISTORTS THE TUMOR MICROENVIRONMENT, PROMOTES TUMOR-ASSOCIATED NEUTROPHIL INFILTRATION, AND PHENOCOPIES MESENCHYMAL-GLIOBLASTOMA." Neuro-Oncology 21, Supplement_6 (2019): vi250. http://dx.doi.org/10.1093/neuonc/noz175.1049.

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Abstract Glioblastoma (GBM), the deadliest and most common adult brain malignancy, is molecularly and clinically heterogeneous. The most common subtype (both primary and recurrent), mesenchymal (MES)-GBM, has the worst prognosis and highest treatment resistance. MES-GBM exhibits hyperactive transcriptional coactivator with PDZ-binding motif (TAZ), a Hippo tumor suppressive pathway effector whose expression in GBMs predicts short survival. Yet, how Hippo-TAZ dysregulation might drive GBM MES transition remains elusive, precluding subtype-specific treatments. Tumor evolution requires signaling d

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Schauten, M. B. J., and B. Tans. "The implied cost of capital of government’s claim and the present value of tax shields: A numerical example." Applied Finance Letters 3, no. 1 (2014): 40. http://dx.doi.org/10.24135/afl.v3i1.20.

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This paper provides a numerical example of how to calculate the cost of capital of government’s claim (rg) and the present value of tax shields. Schauten and Tans (2006) show for the models used in Myers (1974), Miles and Ezzell (1980) and Harris and Pringle (1985), that the present value of tax shields is equal to the difference between the present value of the expected taxes paid by the unlevered firm and the levered firm, with each of the models’ implied rg as discount rate. We discuss a numerical example using the valuation framework by Schauten and Tans (2006) and give a logic explanation

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Wang, Chuncheng. "AI-Based Heterogenous Large-Scale English Translation Strategy." Mobile Information Systems 2022 (February 9, 2022): 1–10. http://dx.doi.org/10.1155/2022/8344814.

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English has become one of the most widely used languages in the world. If there is no good translation mechanism for such a widely used language, it will bring trouble to both study and life. At present, the world’s major platforms are committed to the study of English translation strategies. There are translation platforms from different regions and different translation mechanisms. These translation data from different translation platforms have the characteristics of large-scale, multisource, heterogeneity, high dimensions, and poor quality. However, such inconsistent translation data will

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George, Jason T., David A. Kessler, and Herbert Levine. "Effects of thymic selection on T cell recognition of foreign and tumor antigenic peptides." Proceedings of the National Academy of Sciences 114, no. 38 (2017): E7875—E7881. http://dx.doi.org/10.1073/pnas.1708573114.

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The advent of cancer immunotherapy has generated renewed hope for the treatment of many malignancies by introducing a number of novel strategies that exploit various properties of the immune system. These therapies are based on the idea that cytotoxic T lymphocytes (CTLs) directly recognize and respond to tumor-associated neoantigens (TANs) in much the same way as they would to foreign peptides presented on cell surfaces. To date, however, nearly all attempts to optimize immunotherapeutic strategies have been empirical. Here, we develop a model of T cell selection based on the assumption of ra

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Luo, Wei, Huiting Lin, Zhihao Wu, et al. "Preparation and Physicochemical Properties of Tannin-Immobilized Membrane Adsorbent." Applied Sciences 11, no. 20 (2021): 9684. http://dx.doi.org/10.3390/app11209684.

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Plant tannins have the ability to form stable complexes with metal ions, while microporous membranes have low pressure drop and high flux characteristics. Combining these two materials, a new type of tannin-immobilized membrane (M-TAN) adsorption material has been developed. The PA-BWT, PVDF-BWT, CELL -BWT, and PA-AA-BWT were prepared using different types of microporous membranes as substrates, which maintained the porous structure of the membranes and had the characteristics of high flux and fast filtration rate. The surface contact angle and pure water flux analysis showed that the introduc

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Jin, Lin, Jing Yang, Zhujun Yi, Hong S. Kim, Feng Tian, and Jiaqi Shi. "Abstract PO-125: The role of KDM6A in pancreatic cancer immune microenvironment." Cancer Research 81, no. 22_Supplement (2021): PO—125—PO—125. http://dx.doi.org/10.1158/1538-7445.panca21-po-125.

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Abstract Pancreatic ductal adenocarcinoma (PDAC) is the third leading cause of cancer death in the United States, with a 10% 5-year survival rate. Immunosuppressive myeloid cells, including tumor-associated neutrophils (TANs), contribute to tumor development and treatment resistance. Lysine (K)-specific demethylase 6A (KDM6A) is one of the most frequently mutated epigenetic genes and a tumor suppressor in PDAC. However, the molecular mechanisms by which KDM6A contributes to PDAC development and whether KDM6A impacts the tumor immune microenvironment are unknown. This study established a geneti

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FUJITA, S., Y. TAKATO, and A. SUZUKI. "THEORY OF THE ELECTRICAL TRANSPORT IN METALLIC SINGLE-WALL NANOTUBES." Modern Physics Letters B 25, no. 04 (2011): 223–42. http://dx.doi.org/10.1142/s0217984911025675.

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A metallic (semiconducting) single-wall nanotube contains an irrational (integral) number of carbon hexagons in the pitch. The room-temperature conductivity is higher by two to three orders of magnitude in metallic nanotubes than in semiconducting nanotubes. Tans et al. [Nature386 (1997) 474] measured the electrical currents in metallic single-wall carbon nanotubes under bias and gate voltages, and observed non-Ohmic behaviors. The original authors interpreted their data in terms of a ballistic transport due to the Coulomb blockage on the electron-carrier model. The mystery of why a ballistic

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Kriegler, S. M. "Opleiding van opvoedkundige sielkundiges vir die bevordering van geestesgesondheid in Suid-Afrika." South African Journal of Psychology 18, no. 3 (1988): 84–90. http://dx.doi.org/10.1177/008124638801800303.

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Sielkundiges speel 'n uiters beperkte rol in prioriteitsbesluitnemingsprosesse en die bevordering van geestesgesondheid in die gemeenskap. In 'n land wat gekenmerk word deur sosio-ekonomiese en tegnologiese ontwikkelingsuiterstes en afstuur op dramatiese politieke veranderings en 'n moontlike geestesgesondheidskrisis, moet die sielkunde in die algemeen en die opvoedkundige sielkunde in die besonder deurslaggewende besluite neem rakende professionele rolverruiming, meer toepaslike intervensiemodelle en statutêre aanpassings. Opvoedkundige intervensiemodelle en vaardighede moet die ontoepaslike

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Lebedev, M. A., and R. J. Nelson. "Rhythmically Firing Neostriatal Neurons in Monkey: Activity Patterns During Reaction-Time Hand Movements." Journal of Neurophysiology 82, no. 4 (1999): 1832–42. http://dx.doi.org/10.1152/jn.1999.82.4.1832.

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While previous studies have identified rhythmically firing neurons (RFNs) in monkey neostriatum and these rhythmic firing patterns have been shown to evolve in neostriatal tonically active neurons (TANs) after dopamine input depletion, the activity patterns of RFNs during motor behavior are still far from completely understood. We examined the single-unit activity patterns of neostriatal neurons, recorded in awake behaving monkeys during a wrist movement task, for evidence of rhythmic activity. Monkeys made ballistic wrist flexion and extension movements in response to vibrotactile cues. Anima

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Kaul, Mitresh, and K. Nallasivam. "Response of Elevated Water Tanks Subjected to Lateral Loads." Civil and Environmental Engineering Reports 32, no. 2 (2022): 118–31. http://dx.doi.org/10.2478/ceer-2022-0022.

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Abstract During previous earthquakes around the world, it was discovered that elevated water tanks were severely damaged or collapsed. As a result, structural engineers are concerned about the analysis of these structures to gain a better understanding of the effects of seismic loads on elevated water tanks. In the current study, E-Tabs software, which is based on finite elements, is used to model various shapes of elevated water tanks along with various staging patterns. The higher stiffness of the supports in cross staging tanks makes them better than normal staging tanks, according to the r

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Saria, Abdellali, Mohamed Djermane, and Nasser Dine Hadj-Djelloul. "Three-Dimensional Nonlinear Dynamic Analysis of Base Isolated Cylindrical Steel Tank." Civil Engineering Journal 8, no. 6 (2022): 1268–87. http://dx.doi.org/10.28991/cej-2022-08-06-013.

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Failure of a tank during an earthquake can result in significant financial, human, and environmental losses. Thus, their lack of resiliency against strong earthquakes may result in refinery disruption. This has the potential to have a considerable impact on any economic system. As a result, more research into the seismic performance of tank structures is required to attain the highest possible level of resistance against strong earthquakes. In this paper, we aim to look into the installation of seismic isolation systems in cylindrical steel storage tanks. A nonlinear 3D finite element model is

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Yazdani, Hamza O., Tony Haykal, Ruiqi Yang, Celine Tohme, David A. Geller, and Samer Tohme. "Abstract 5136: Surgical stress promotes long-lasting protumorigenic changes in bone marrow derived progenitor cells." Cancer Research 83, no. 7_Supplement (2023): 5136. http://dx.doi.org/10.1158/1538-7445.am2023-5136.

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Abstract Introduction: Surgery is a crucial intervention for cancer patients. However, the perioperative period is characterized by an increased risk for accelerated growth of metastatic disease. Our recent work shows that the protumorigenic systemic inflammatory changes and the formation of neutrophil extracellular traps (NETs) persist months after surgery in both mice and humans, and parallel micrometastatic tumor growth and recurrence. Here we hypothesized that surgery may induce long-term sustained epigenetic and transcriptomic changes in bone marrow derived granulocytes-monocytes progenit

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Qi, Li Mei, and Ming Deng Shi. "Study on Tank Capacity Table Measuring Model after the Storage Tank Displacement." Applied Mechanics and Materials 333-335 (July 2013): 14–21. http://dx.doi.org/10.4028/www.scientific.net/amm.333-335.14.

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All of the gas station has established underground storage tanks in accordance with the unified state standards. Due to the reasons such as deformation of foundation many tanks occurs the longitudinal tilt and lateral deflection changed after a period of time in use that lead to tank capacity charts to change. This paper solves the storage tank displacements recognition and capacity charts calibration by mathematical modeling method and MATLAB software. We study the calibration tank capacity charts when actual storage tank happen vertical or horizontal displacements on the basis of research on

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Saravanathamizhan, R., R. Paranthaman, N. Balasubramanian, and C. Ahmed Basha. "Tanks in Series Model for Continuous Stirred Tank Electrochemical Reactor." Industrial & Engineering Chemistry Research 47, no. 9 (2008): 2976–84. http://dx.doi.org/10.1021/ie071426q.

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Li, Xian-Sheng, Yuan-Yuan Ren, and Xue-Lian Zheng. "Model-Free Adaptive Control for Tank Truck Rollover Stabilization." Mathematical Problems in Engineering 2021 (August 20, 2021): 1–16. http://dx.doi.org/10.1155/2021/8417071.

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Influenced by lateral liquid sloshing in partially filled tanks, tank vehicles are apt to encounter with rollover accidents. Due to its strong nonlinearity and loading state uncertainty, it has great challenges in tank vehicle active control. Based on the model-free adaptive control (MFAC) theory, the roll stability control problem of tank trucks with different tank shapes and liquid fill percentages is explored. First, tank trucks equipped with cylinder or elliptical cylinder tanks are modelled, and vehicle dynamics is analyzed. This dynamic model is used to provide I/O data in the controlled

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Smith, Anne E., David Cohan, and Frank Selker. "A MODEL FOR MANAGING UNDERGROUND STORAGE TANKS." International Oil Spill Conference Proceedings 1987, no. 1 (1987): 599–604. http://dx.doi.org/10.7901/2169-3358-1987-1-599.

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ABSTRACT The potential costs of underground tank leaks provide companies with a solid incentive to take action to reduce leak risks. However, a cost-effective risk management strategy is difficult to identify when faced with the uncertainties in the occurrence, nature, and timing of costly incidents. A decision support model based on the techniques of decision analysis has been developed to help managers choose the best course of action. The model works by balancing the known costs of preventive and mitigating actions with the uncertain costs of tank leaks. The model uses tank- and site-specif

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Serdukov, V. I., N. A. Serdyukova, and S. I. Shishkina. "Mathematical Single-Player Computer Game Model to Reproduce Duel Fight of Tanks." Mathematics and Mathematical Modeling, no. 3 (September 20, 2020): 29–42. http://dx.doi.org/10.24108/mathm.0320.0000225.

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In improving computer games, which reproduce a battle of tanks, two tasks can be distinguished: increasing a collection of game tools to represent virtual prototypes of real tank models and ensuring a realistic game. To solve these problems, a tool is necessary that allows us to compare gaming capabilities of virtual tank brands with combat capabilities of their real prototypes. A mathematical model of a computer game that reproduces a duel battle of tanks can be used as the tool. The specified model satisfies the following requirements: the sequence of operations reproduced in the model is in

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Paulick, Nick, and Tom Rogers. "Section XII Transport Tank Code Preview—Cargo Tanks." Journal of Pressure Vessel Technology 128, no. 4 (2006): 665–66. http://dx.doi.org/10.1115/1.2349581.

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ASME Section XII Transport Tank Code will have an impact on the regulations related to the construction and continued service of highway cargo tanks used in the transportation of dangerous goods. Modal Appendix 1 of this code specifically addresses these transport tanks, and is intended to replace a large portion of the DOT regulations currently governing how they are built and serviced. This paper presents a preview of Modal Appendix 1, one of the mandatory appendices related to cargo tanks, and how these changes will affect manufacturers and repair shops.

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Liu, Jing, Zi Li Li, and Zhi Shuan Cao. "Computational Simulation of Corrosion Perforation in the Oil-Tank Bottom with Cellular Automata." Advanced Materials Research 399-401 (November 2011): 1755–62. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.1755.

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Corrosion perforation in the oil-tank bottom is one of the most damaging mechanisms in oil-tanks. This paper presents a two-dimentional cellular automata model which simulates the corrosion perforation in the oil-tank bottom. According to the mechanism of metal corrosion in the oil-tank bottom, the CA model which simulates the electrochemical reactions and diffusion steps of pitting corrosion is proposed. With a series of simulation, the results show that CA is a powerful approach to model corrosion perforation in the oil-tank bottom, which could be of practical importance in predicting the se

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Youssef, Khaled S., Dean T. Mook, Ali H. Nayfeh, and Saad A. Ragab. "Roll Stabilization by Passive Anti-Roll Tanks Using an Improved Model of the Tank-Liquid Motion." Journal of Vibration and Control 9, no. 7 (2003): 839–62. http://dx.doi.org/10.1177/1077546303009007006.

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Roll motion is an undesirable feature of the behavior of a ship in rough seas, and so it is natural to consider ways of reducing it. The most common devices for increasing roll damping are bilge keels. However, the effectiveness of keels is limited, and anti-roll tanks and fins are used when more control is required. Moreover, unlike keels, anti-roll tanks can be used when the ship is not underway. Our objective is to develop design procedures for passive tanks for roll reduction in rough seas. To this end, we develop an improved model of the passive tank-liquid motion in this paper. This tank

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Giustolisi, Orazio, Luigi Berardi, and Daniele Laucelli. "Generalizing WDN simulation models to variable tank levels." Journal of Hydroinformatics 14, no. 3 (2011): 562–73. http://dx.doi.org/10.2166/hydro.2011.224.

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In water distribution network (WDN) steady-state modelling, tanks and reservoirs are modelled as nodes with known heads. As a result, the tank levels are upgraded after every steady-state simulation (snapshot) using external mass balance equations in extended period simulation (EPS). This approach can give rise to numerical instabilities, especially when tanks are in close proximity. In order to obtain a stable EPS model, an unsteady formulation of the WDN model has recently introduced. This work presents an extension of the steady-state WDN model, both for demand-driven and pressure-driven an

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Chen, Zengshun, Zhengang Xu, Lingxiao Teng, Jun Fu, Tao Xu, and Zhihang Zhao. "Experimental and Numerical Investigation for Seismic Performance of a Large-Scale LNG Storage Tank Structure Model." Applied Sciences 12, no. 17 (2022): 8390. http://dx.doi.org/10.3390/app12178390.

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As special equipment for storing energy, the safety performance of liquified natural gas (LNG) storage tanks under earthquake action is extremely important. To study the dynamic characteristics of the large-scale LNG storage tank structure and the dynamic response under earthquake action, the shaking table test and numerical simulation analysis of the LNG storage tank structure model are carried out. The results of the shaking table test demonstrate that the natural vibration frequency of the tank model is significantly reduced after the isolation measures are taken. The acceleration response

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Kalantari, Afshin, Mohammad Reza Nikoomanesh, and Mohammad Ali Goudarzi. "Applicability of Mass-Spring Models for Seismically Isolated Liquid Storage Tanks." Journal of Earthquake and Tsunami 13, no. 01 (2019): 1950002. http://dx.doi.org/10.1142/s1793431119500027.

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Employing base isolation technique for reduction of seismic response of liquid storage tanks has been proved to be quite effective. The main purpose of this paper is to quantitatively clarify, the contribution of convective and impulsive parts of the contained liquid in seismic behavior of an isolated liquid tank. Moreover, the accuracy of the simplified model which is generally used for the prediction of seismic behavior of conventional tanks is examined for isolated liquid tanks. For these purposes, the seismic response of the isolated cylindrical liquid storage tanks is considered using bot

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Shrimali, M. K., and R. S. Jangid. "Dynamic Analysis of Liquid Storage Tanks with Sliding Systems." Advances in Structural Engineering 6, no. 2 (2003): 145–58. http://dx.doi.org/10.1260/136943303769013237.

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Dynamic response of liquid storage tanks isolated by the sliding systems is investigated under real earthquake ground motion. The frictional force of sliding systems is modelled by conventional and hysteretic models. The continuous liquid mass is lumped as convective mass, impulsive mass and rigid mass. The corresponding stiffness associated with these lumped masses is worked out depending upon the properties of the tank wall and liquid mass. The governing equations of motion of the tank with sliding system are derived and solved by Newmark's step-by-step method with iterations. The frictional

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Stamou, A. I., M. Latsa, and D. Assimacopoulos. "Design of two-storey final settling tanks using mathematical models." Journal of Hydroinformatics 2, no. 4 (2000): 235–45. http://dx.doi.org/10.2166/hydro.2000.0021.

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A mathematical model is applied to the design of two-storey final settling tanks. Computations show that the flow and suspended solids (SS) concentration fields for the upper and bottom tanks are similar. The flow field has the ‘two-layer’ structure, observed in real and laboratory settling tanks, consisting of a bottom current and a free surface return current with approximately equal heights. The SS concentration field is governed by the flow field (and vice versa). The SS concentration profiles are uniform in the major part of the tanks. The hydraulic and SS removal efficiencies improve wit

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Sheng, Dong-Yuan, and Zongshu Zou. "Application of Tanks-in-Series Model to Characterize Non-Ideal Flow Regimes in Continuous Casting Tundish." Metals 11, no. 2 (2021): 208. http://dx.doi.org/10.3390/met11020208.

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This study describes a new tanks-in-series model for analyzing non-ideal flow regimes in a single-strand tundish. The tundish was divided into two interconnected tanks, namely an inlet tank and an outlet tank. A water model experiment was carried out to separately measure the residence-time distribution (RTD) of the two tanks. Drift beads were adopted in the water model experiment to simulate the non-metallic inclusions in molten steel. Dead volume fraction was evaluated by analyzing measured RTD curves. The ratio between mixed flow volume and plug flow volume was proposed as a new criterion t

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Saha, Sandip Kumar, Vasant A. Matsagar, and Arvind K. Jain. "Earthquake Response of Base-Isolated Liquid Storage Tanks for Different Isolator Models." Journal of Earthquake and Tsunami 08, no. 05 (2014): 1450013. http://dx.doi.org/10.1142/s1793431114500134.

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The effect of different isolator parameters on earthquake response of base-isolated liquid storage tanks is investigated herein. Mechanical analog, with three lumped masses, is used to model ground supported base-isolated liquid storage tank, and analyzed for recorded earthquake ground accelerations. The nonlinear force–deformation behavior of the isolator is mathematically modeled in two different ways, represented by (a) equivalent linear elastic-viscous and (b) bi-linear hysteretic behaviors. The equations of motion for the base-isolated tank are derived and solved in the incremental form u

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Love, J. S., and M. J. Tait. "Linearized sloshing model for 2D tuned liquid dampers with modified bottom geometries." Canadian Journal of Civil Engineering 41, no. 2 (2014): 106–17. http://dx.doi.org/10.1139/cjce-2013-0106.

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This study presents a new model for predicting the response of a two-dimensional tuned liquid damper (TLD) tank with a variable fluid depth. A simple finite element method is presented, which is used to calculate the sloshing mode shapes. From the mode shapes, the equivalent mechanical properties of the sloshing fluid are estimated. Three tanks (flat-bottom, triangular-bottom, and circular-bottom), which have closed-form expressions for their equivalent mechanical properties are used to evaluate the model. The proposed model is in agreement with the closed-form expressions. Subsequently, a par

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Shi, Cai Xia, and Wei Min Yang. "Analysis of Modal and Seismic Property of Oil Storage Tanks." Applied Mechanics and Materials 527 (February 2014): 95–99. http://dx.doi.org/10.4028/www.scientific.net/amm.527.95.

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In the engineering background of 1000 cubic meters of anchored tank, the large-scale finite element software ANSYS was used to analysis of modal and transient of oil storage tanks. Completed oil tank model and carried on the modal analysis and then vibration characteristics were gained. On this basis, considering the earthquake excitation, analyzes dynamic response of the anchored tank under seismic load. Then gained the oil tank overall structure of displacement, equivalent stress, axial and circumferential stress. From images can be analyzed that the main vibration mode is multiple circumfer

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Jendželovský, Norbert, and Lenka Uhlířová. "Rectangular tank under the seismic load." MATEC Web of Conferences 313 (2020): 00022. http://dx.doi.org/10.1051/matecconf/202031300022.

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Tanks have been currently used for the storage of various substances, in particular as drinking water storage tanks and for storage of various technical fluids. Rectangular tanks have advantages over cylindrical tanks, such as: lower sensitivity to unilateral loads and better use of space when used in a system of tanks. The rectangular tank analyzed in this article is filled with water. During the dynamic analysis of the tank, it was loaded by an accelerogram of a natural earthquake. In the calculation, the method of direct integration over time was used, considering damping. From the accelero

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Hernandez-Lopez, R. D., V. G. Tzatchkov, A. Martin-Dominguez, and V. H. Alcocer-Yamanaka. "Study of hydraulics and mixing in roof tanks used in intermittent water supply." Journal of Water, Sanitation and Hygiene for Development 6, no. 4 (2016): 547–54. http://dx.doi.org/10.2166/washdev.2016.147.

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Roof tanks are common in low and middle income countries, due to the intermittent water supply. Their hydraulic and water mixing behaviour has not been studied. This paper presents the results of a study on mixing and water demand in roof tanks, based on physical and numerical models. Tracer tests were carried out on a real scale transparent wall laboratory model of a roof tank, and a three-parameter residence time distribution model was applied, showing that the model that best describes mixing in roof water tanks is the one with a completely stirred flow reactor with a small portion of bypas

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Sivý, Martin, and Miloš Musil. "Seismic Resistance of Storage Tanks Containing Liquid in Accordance with Principles of Eurocode 8 Standard." Strojnícky casopis – Journal of Mechanical Engineering 66, no. 2 (2016): 79–88. http://dx.doi.org/10.1515/scjme-2016-0021.

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Abstract Large capacity tanks storing various liquids are important components in distribution and transmission systems. During operation tanks can be subjected to different types of loading. Therefore, maximum attention must be paid to the tank design to capture all possible causes and forms of failures. The article deals with the procedure for seismic resistance of liquid storage tanks which are in accordance with the principles of Eurocode 8 standard. The seismic analysis is performed on flexible (steel) circular vertical ground-supported model of tank containing liquid (water). The main ai

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Campisano, Alberto, and Carlo Modica. "Appropriate resolution timescale to evaluate water saving and retention potential of rainwater harvesting for toilet flushing in single houses." Journal of Hydroinformatics 17, no. 3 (2015): 331–46. http://dx.doi.org/10.2166/hydro.2015.022.

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The main objective of the paper is to identify the appropriate temporal scale for modeling the behavior of rainwater harvesting tanks in relation to the purpose they are built for, i.e., water saving, stormwater retention potential, etc. A tank water balance model coupled with a specific procedure to determine long-term series of rainfall (tank inflow) and toilet flushes (tank outflow) at different daily and sub-daily resolution timescales was developed. The model was applied to a household case study for which detailed water demand data are available from measurements. Simulations show that t

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Chen, Geng, Jia Qu, and Chun Yu Tian. "Numerical Analysis of Ring Beam Effect on the Modal of LNG Storage Tank." Applied Mechanics and Materials 638-640 (September 2014): 172–77. http://dx.doi.org/10.4028/www.scientific.net/amm.638-640.172.

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LNG storage tank is an important department in the gas receiving station. LNG in the tank is flammable and explosive medium, once the tank damaged, disasters may be happened. So researching the dynamic response analysis is very necessary. In this paper, modal analysis of LNG outside tank were performed by ANSYS Workbench, the first six orders of mode shapes and their frequencies of LNG outside tank were concluded. Contrast vibration mode and natural frequency of the LNG storage tanks with ring beam and no ring beam, the influence of ring beam of LNG tank mode has been discussed. Conduct a seri

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Abdulwahid, Maan M., and Noraldeen B. Mohammed Wasel. "Design and Implementation of Water Level Tank Model by using SCADA System." Informatica : Journal of Applied Machines Electrical Electronics Computer Science and Communication Systems 01, no. 01 (2020): 63–69. http://dx.doi.org/10.47812/ijamecs2010109.

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Recently, SCADA system has been widely deployed in several stations and performing different purposes by connecting it with different hardware components and terminals. As a result, in this paper, it has been designed and proposed a model for water tank level-based detection for the scenarios of station that contains several tanks. The proposed model has shown a significant in performance and enhance the response of the tank management with both cases of tank filling and discharging.

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Chaudhari, Mr Rohit Kiran. "Non-Linear Time History Analysis of an Elevated Water Tank." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (2021): 4327–34. http://dx.doi.org/10.22214/ijraset.2021.35939.

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It was discovered that reinforced concrete elevated water tanks with frame staging outperformed reinforced concrete elevated water tanks with shaft staging in terms of seismic resistance. These can be due to the frame staging's seismic energy absorption capability. As a result, the primary goal of this research is to better understand the seismic behavior and performance characteristics of elevated water tanks with frame staging. Furthermore, when compared to other shapes, circular tanks have the smallest surface area for a given tank size. As a result, the amount of material needed for a circ

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Kim, Youngjin, and Mooyoung Han. "Rainwater storage tank as a remedy for a local urban flood control." Water Supply 8, no. 1 (2008): 31–36. http://dx.doi.org/10.2166/ws.2008.029.

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Surcharge runoff over the capacity of drainage pipes is one of main flood breaking factors in urban area. Change into larger pipes is costly and time consuming solution. Rainwater tanks can be a sustainable solution for the control of heavy runoff. The Rainfall-Storage-Drain(RSD) model is developed for the design of rainwater tanks of flood control. Design rainfall of Huff's distribution and runoff analysis on building rooftop makes inflow curves into the tanks. Through a water balance equation, tank volume versus peak flow curves can determine the minimum tank volume needed for controlled pea

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Lara, Pedro, and Masato Kobiyama. "Proposta de Modelo Conceitual: PM Tank Model." Revista Brasileira de Recursos Hídricos 17, no. 3 (2012): 149–61. http://dx.doi.org/10.21168/rbrh.v17n3.p149-161.

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Miller, T., and A. M. Birk. "A Re-Examination of Propane Tank Tub Rockets Including Field Trial Results." Journal of Pressure Vessel Technology 119, no. 3 (1997): 356–64. http://dx.doi.org/10.1115/1.2842316.

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When a tank containing a pressure-liquefied gas fails, one mode of failure involves the tank being propelled large distances by the released two-phase material. This mode of failure is called a tub rocket and it can pose a severe hazard to the public because of its unpredictability. Field tests were recently conducted to study the effect of explosive devices on propane tanks. The tests included tanks of various sizes up to 2000 L (500 gal).In most cases, the tests resulted in punctured tanks with transient two-phase jet releases. In some cases, the jet releases were sufficient to propel the ta

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