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Artículos de revistas sobre el tema "TI-81 (Calculator)"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 27 de julio de 2025

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1

Hansen, Will. "Using Graphical Misrepresentation to Stimulate Student Interest." Mathematics Teacher 87, no. 3 (1994): 202–5. http://dx.doi.org/10.5951/mt.87.3.0202.

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The graphing calculator is a wonderful tool that can be used to generate visual representations to help develop a deeper understanding of mathematical relationships. In addition, the graphing calculator can be used to generate startling misrepresentations that can be thought-provoking. Whenever we can surprise our students with counterintuitive results—Why did that happen?—their increased interest level presents an exceptional learning opportunity. This article gives a few examples of how misrepresentations of periodic fun ctions on the Texas Instruments TI-81 graphing calculator can be used t

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Plummer, Robert, Maita Levine, and Raymond H. Rolwing. "Using the TI-81 to Analyze Sports Data." Mathematics Teacher 86, no. 8 (1993): 636–41. http://dx.doi.org/10.5951/mt.86.8.0636.

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Our objective is to use the TI-81 calculator to solve several familiar problems, to develop insight into sophisticated mathematical ideas without being encumbered by excess computational difficulty, and Students who know little algebra can observe trends and 636 discuss results to become familiar with the increasingly affordable and user-friendly technology of the hand-held graphing and programmable calculator. In this article, we will analyze several sports examples and obtain and interpret standard statistics for these examples.

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3

Robin, Anthony C. "Comparisons of Graphical Calculators: Texas TI-81 Compared with Casio 7000G." Mathematical Gazette 75, no. 474 (1991): 477. http://dx.doi.org/10.2307/3618656.

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4

Buckstein, Rena, Lisa Chodirker, Michelle Geddes, et al. "Intermittent Transfusion Independence Is Associated with Improved Overall Survival in Patients with Transfusion Dependent MDS." Blood 134, Supplement_1 (2019): 5416. http://dx.doi.org/10.1182/blood-2019-129464.

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Background: More than 50% of patients with myelodysplastic syndrome (MDS) become transfusion dependent (TD) during the course of their disease and 25-30% present as TD at diagnosis. While TD is more common in IPSS/IPSS-R higher risk patients and is associated with inferior overall survival, it is unclear if achievement of transfusion independence (TI) for even short periods of time is associated with improved overall survival (OS). Objectives: Evaluate the impact of intermittent transfusion dependence and independence on OS in MDS patients and compare the OS with patients persistently TD or TI

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5

Zafaran, Abdul Fattah. "MEASUREMENT OF INTERNAL CONVERSION COEFFICIENT Of 280kev γ – RAYS IN 203Hg". INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, № 7 (2016): 403–17. https://doi.org/10.5281/zenodo.56997.

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The measurement of the internal conversion coefficient of 280keV γ – ray in <sup>203</sup>HG have been investigated by means of calibrated 2ʺ x 2ʺ NaI(Tl)(scintillation detector which is sodium iodide activated with small amount of thallium) γ – rays spectrometer, using the standard γ – rays sources Co<sup>67</sup> and Ba<sup>133</sup> as shown in Table(1), and prepared a source of Hg<sup>203</sup> from Hg<sup>203</sup>Cl<sub>2</sub>. It have been used some heavy element Au<sup>198</sup> isotope Ti<sup>81</sup>[3, 6, 9, 12,13, 15]. The total internal convers

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6

Feldman, Darren Richard, Martin Henner Voss, Xiaoyu Jia, et al. "Serum tumor marker (STM) decline rates during high-dose chemotherapy (HDCT) to predict outcome for germ cell tumor (GCT) patients (pts)." Journal of Clinical Oncology 30, no. 15_suppl (2012): 4532. http://dx.doi.org/10.1200/jco.2012.30.15_suppl.4532.

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4532 Background: STM decline rates predict outcome for GCT pts during 1st-line conventional-dose chemotherapy. We investigated the importance of STM decline rates during salvage HDCT. Methods: HDCT included an initial low dose (LD) portion (1-2 cycles of paclitaxel plus ifosfamide [TI] + G-CSF) for stem cell collection followed by a high-dose (HD) portion (3 cycles of carboplatin + etoposide or TI + carboplatin). Eligible pts had elevated STM (AFP >15 and/or HCG >2.2) at the start of LD and completed ≥1 HD cycle. Slope and t1/2 were calculated for HCG and AFP for cycles 1-2 of LD and HD

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7

Akbar, Arshia, Waqas Khan, Zunairah Shah, et al. "A Systematic Review and Meta-Analysis of Luspatercept for Anemia Treatment in Low Risk Myelodysplastic Syndrome with Ring Sideroblast Subtype in Phase II and Phase III Clinical Trials." Blood 136, Supplement 1 (2020): 40–41. http://dx.doi.org/10.1182/blood-2020-137152.

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Background: Low-risk Myelodysplastic Syndromes (MDS) patients commonly present with anemia and may become blood transfusions dependent upon progression. Luspatercept, a targeted drug for an activin receptor ligand has emerged as new anemia treatment in MDS for patients with ring sideroblasts and the patients with SF3B1 mutation. This systemic review highlights the efficacy of luspatercept in MDS patients whom erythropoietin stimulating agents (ESA) are not effective. Methods: We conducted a comprehensive literature search using PubMed, Clinical trial.gov, Embase, Cochrane, and Web of science.

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8

Halkoaho, Tapio, Marjaana Ahven, O. Tapani Rämö, Janne Hokka, and Hannu Huhma. "Petrography, geochemistry, and geochronology of the Sc-enriched Kiviniemi ferrodiorite intrusion, eastern Finland." Mineralium Deposita 55, no. 8 (2020): 1561–80. http://dx.doi.org/10.1007/s00126-020-00952-2.

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Abstract The Kiviniemi mafic intrusion, near the eastern margin of the Paleoproterozoic Central Finland Granitoid Complex, is both spatially and temporally associated with post-kinematic Fe-Ti-P-enriched Svecofennian orogenic mafic magmatism. The main rock types in this small (~ 15 ha) intrusion are garnet-bearing fayalite ferrodiorite, leucoferrodiorite, ferromonzodiorite, and pyroxene diorite. The garnet-bearing fayalite ferrodiorite and leucoferrodiorite contain 50–281 ppm Sc, 275–5600 ppm Zr, and 58–189 ppm Y (n = 42), delineating a mineralized deposit some 2.5 ha in extent. Overall, these

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9

El, Sayed A.A, A.A Aglan, H.M.H Tammam, and H.A Alterkawi. "Role of Cardiac Sonography and Capnometry in Predicting Cardiopulmonary Resuscitation Outcomes." Biolife 4, no. 3 (2022): 446–54. https://doi.org/10.5281/zenodo.7319151.

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<strong>ABSTRACT</strong> While capnography is used routinely as a non-invasive monitoring tool, cardiac sonography is also increasingly used in intensive care settings. Both of them have been proposed to assist in decision-making in management of cardiopulmonary arrest (CPA). In this study, we tested the performance feasibility and the role of cardiac sonography & capnometry as predictors of successful resuscitation of CPA patients. Focused cardiac sonography was performed for 100 ICU patients with CPA during the 10 seconds of pulse evaluation period. Simultaneously measurements of PetCO2

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10

Jaureguibeitia, Xabier, Unai Irusta, Elisabete Aramendi, Pamela Owens, Henry E. Wang, and Ahamed H. Idris. "Abstract 264: Automatic Detection of Ventilations Using the Thoracic Impedance Signal During Lucas Chest Compressions." Circulation 140, Suppl_2 (2019). http://dx.doi.org/10.1161/circ.140.suppl_2.264.

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Introduction: Resuscitation from out-of-cardiac arrest (OHCA) requires control of both chest compressions and lung ventilation. There are few effective methods for detecting ventilations during cardiopulmonary resuscitation. Thoracic impedance (TI) is sensitive to changes in lung air volumes and may allow detection of ventilations but has not been tested with concurrent mechanical chest compressions. Hypothesis: It is possible to automatically detect and characterize ventilations from TI changes during mechanical chest compressions. Methods: A cohort of 420 OHCA cases (27 survivors to hospital

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11

Kumar, Shankar, Thomas Parry, Sue Mallett, et al. "Diagnostic performance of magnetic resonance enterography disease activity indices compared with a histological reference standard for adult terminal ileal Crohn’s disease: experience from the METRIC trial." Journal of Crohn's and Colitis, April 27, 2022. http://dx.doi.org/10.1093/ecco-jcc/jjac062.

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Abstract Background and Aims The simplified magnetic resonance enterography (MRE) index (sMARIA), London and “extended” London scoring systems are widely used in Crohn’s disease (CD) to assess disease activity, although validation studies have usually been single centre, retrospective and/or used few readers. Here, we evaluated these MRE indices within a prospective multicentre, multireader diagnostic accuracy trial. Methods A subset of participants (newly diagnosed or suspected of relapse) recruited to the METRIC trial with available terminal ileal (TI) biopsies was included. Using pre-specif

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12

Koneru, Manisha, Clint A. Badger, Fabio Settecase, et al. "Tenzing 7 Delivery Catheter Performance Across Tortuosity Indices." Stroke: Vascular and Interventional Neurology, May 15, 2024. http://dx.doi.org/10.1161/svin.124.001351.

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BACKGROUND Early clinical experience with the Tenzing 7 delivery catheter (T7, Route 92 Medical, San Mateo, CA, USA) demonstrates high success rates for intracranial delivery of large bore aspiration catheters. Its soft, flexible, tapered tip mitigates the “ledge effect” that may cause resistance when navigating neurovascular devices through tortuous internal carotid arteries (ICAs) or other arterial branch origin variants. This study aims to characterize T7 performance across ICAs with varying tortuosities. METHODS A retrospective analysis was performed of prospectively collected data from pa

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13

Jordano, Lia, Emilie C. Robinson, Aleem Mirza, Nedaa Skeik, Larissa Stanberry, and Jesse Manunga. "Effects of Iliac Tortuosity Index on Fenestrated Endovascular Aortic Aneurysm Repair for Pararenal and Thoracoabdominal Aortic Aneurysms." Journal of Endovascular Therapy, May 8, 2023, 152660282311723. http://dx.doi.org/10.1177/15266028231172375.

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Purpose: To evaluate the effect of iliac tortuosity on procedural metrics and outcomes of patients with complex aortic aneurysms (cAAs) undergoing repair with fenestrated/branched endografts (f/b-EVAR [endovascular aortic aneurysm repair]). Material and Methods: The study is a single-center, retrospective review of a prospectively maintained database of patients undergoing aneurysm repair using f/b-EVAR between the years 2013 and 2020 at our institution. Included patients had at least 1 preoperative computed tomography angiography (CTA) available for analysis. Iliac artery tortuosity index (TI

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14

Hagen-Plantinga, Esther A., Guido Bosch, and Wouter H. Hendriks. "Practical approach to determine apparent digestibility of canine diets." Journal of Nutritional Science 3 (2014). http://dx.doi.org/10.1017/jns.2014.26.

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AbstractA practical approach to determine apparent faecal digestibility using privately owned dogs may be a useful tool in evaluating differences in nutrient digestibility between dogs with various life stages. The aim was to develop a simple method that would suit such studies using the whitening agent titanium oxide (TiO2) as an indigestible marker. Forty privately owned, healthy male and female dogs of various breeds were included. Selection was based on an owner questionnaire. Means with their standard errors age and body weight (BW) of the dogs were 6·2 (0·6) years (range 1·0–13·0 years)

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15

Kumar, Shankar, Thomas Parry, Sue Mallett, et al. "Diagnostic performance of sonographic activity scores for adult terminal ileal Crohn’s disease compared to magnetic resonance and histological reference standards: experience from the METRIC trial." European Radiology, August 1, 2023. http://dx.doi.org/10.1007/s00330-023-09958-6.

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Abstract Objectives The simple ultrasound activity score for Crohn’s disease (SUS-CD) and bowel ultrasound score (BUSS) are promising intestinal ultrasound (IUS) indices of CD, but studied mainly in small settings with few sonographers. We compared SUS-CD and BUSS against histological and magnetic resonance enterography (MRE) reference standards in a post hoc analysis of a prospective multicentre, multireader trial. Methods Participants recruited to the METRIC trial (ISRCTN03982913) were studied, including those with available terminal ileal (TI) biopsies. Sensitivity and specificity of SUS-CD

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16

Cruz, José Henrique de Araújo, Ingridy Cristiny de Souza Moreira, Maria de Fátima Vieira Alves, Heloisa Mara Batista Fernandes de Oliveira, Abrahão Alves de Oliveira Filho, and Maria Angélica Satyro Gomes Alves. "Análise da atividade farmacológica e toxicológica do monoterpeno relacionado à Odontologia: estudo in silico." ARCHIVES OF HEALTH INVESTIGATION 8, no. 11 (2020). http://dx.doi.org/10.21270/archi.v8i11.4314.

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Introdução: As plantas medicinais são capazes de fornecer fármacos de grande importância clínica, a exemplo dos monoterpenos. Estes são conhecidos por apresentarem uma variedade de efeitos em diferentes sistemas biológicos, justificando a necessidade de pesquisas para investigação do potencial terapêutico e tóxico. Com o avanço tecnológico, modelos in silico vêm sendo amplamente aplicados para a avaliação de potenciais atividades farmacológicas e de toxicidade de compostos em ambientes metabólicos de mamíferos. Objetivo: Avaliar os efeitos farmacológicos e toxicológicos do monoterpeno Neral co

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