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Journal articles on the topic 'M2CAO'

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1

Little, Philip V., Sandra E. Kraft, Arvin Chireh, Peter Damberg, and Staffan Holmin. "Oxygen metabolism MRI – A comparison with perfusion imaging in a rat model of MCA branch occlusion and reperfusion." Journal of Cerebral Blood Flow & Metabolism 40, no. 11 (2019): 2315–27. http://dx.doi.org/10.1177/0271678x19892271.

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The penumbra is sustained by an increased extraction of oxygen (OEF) from blood to brain tissue. Metabolic imaging may improve penumbra specificity when examining stroke patients with wake-up stroke and a long time between admission and symptom onset. We used MRI to examine OEF, and compared the volume of regions with elevated OEF to the volume of regions with perfusion deficit in a M2 occlusion model (M2CAO) with preserved collateral blood flow. OEF was calculated from BOLD MRI examining tissue R2′, with ASL perfusion imaging employed to determine cerebral blood flows (CBF) and volumes. Diffu
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2

Little, Philip, Ola Kvist, Rikard Grankvist, et al. "Preserved Collateral Blood Flow in the Endovascular M2CAO Model Allows for Clinically Relevant Profiling of Injury Progression in Acute Ischemic Stroke." PLOS ONE 12, no. 1 (2017): e0169541. http://dx.doi.org/10.1371/journal.pone.0169541.

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3

Lussier, Aaron J., Joel D. Grice, Henrik Friis, and Glenn G. Poirier. "Insights into the crystal chemistry of the serandite–schizolite–pectolite series." Canadian Mineralogist 59, no. 3 (2021): 551–72. http://dx.doi.org/10.3749/canmin.1900097.

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ABSTRACT The compositional series {Na} [[M1+M2](Ca2XMn2–2X)Si3O8(OH)] includes the minerals serandite (X = 0), schizolite (X = 0.5), and pectolite (X = 1). Six crystals are structurally and chemically characterized in detail (four from Ilímaussaq, Greenland; two from Mont Saint-Hilaire, Québec, Canada): one serandite, one pectolite, and four schizolite crystals. Those originating from Greenland show up to 0.05 apfu LREE3+ (La + Ce + Pr + Nd + Eu + Gd). For each, all H atoms were located, and final R1 factors were below 4.4% (<R1> = 2.35%). The results are compared with previously
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4

Kayumova, T. R., A. V. Myshlyavtsev, and P. V. Stishenko. "PHASE DIAGRAMS OF THE TERMINATING OXYGEN LAYER ON MXenes M2CO sheets (M = Ti, V, Nb)." Dynamics of Systems, Mechanisms and Machines 9, no. 2 (2021): 027–31. http://dx.doi.org/10.25206/2310-9793-9-2-27-31.

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В данной работе мы исследовали фазовое поведение слоя терминирующего кислорода на листах MXenes M2CO (M = Ti, V, Nb) используя методы теории функционала плотности и статистической физики. Мы построили приближение потенциала латеральных взаимодействий между атомами адсорбированного кислорода. Приближение имеет вид парного потенциала. Сделали количественную оценку погрешностей парного потенциала. Далее мы построили изотермы адсорбции алгоритмами статистической физики, реализованными в программном коде SuSMoST. Результаты статистического моделирования показали нетривиальное фазовое поведение адсо
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5

Li, Yue, Xiuhu Zhang, and S. M. Ali S. Hejazi. "Study on the potential change of corroded reinforced concrete in ECE with MPC-CFRP as anode." MATEC Web of Conferences 319 (2020): 06005. http://dx.doi.org/10.1051/matecconf/202031906005.

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Aiming at the rust removal requirements of reinforced concrete, the MPC-CFRP composite material was used as the external anode, and the Electrochemical chloride extraction (ECE) method was used to test the polarization curve of the steel bar under different ECE current densities, and the potential changes of the steel bar at different times were analyzed. The results show that the ECE system with MPC-CFRP as the external anode has a good effect of reducing the corrosion rate and the risk of corrosion of steel bars. The current density of 3A/m2is higher than that of 1A/m2in dechlorination effic
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6

Kayumova, T. R., A. V. Myshlyavtsev, and P. V. Stishenko. "Phase diagrams of the terminating oxygen layer on MXenes M2CO sheets (M = Ti, V, Nb)." Journal of Physics: Conference Series 2182, no. 1 (2022): 012075. http://dx.doi.org/10.1088/1742-6596/2182/1/012075.

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Abstract In this work we have studied the behavior of oxygen adsorbed on the MXenes M2CO (M=Ti, V, Nb) surface by the density functional theory and Monte Carlo methods. An approximation for the lateral interactions potential has been constructed that has the form of a pair potential. We have carried out the quantitative assessment of the errors of the pair potential. Using SuSMoST program we have constructed isotherms of adsorption. The results showed a non-trivial phase behavior of the adlayer: we observed three phases characterized by the 1/3, 1/2 and 2/3 coverage. It has been predicted that
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7

Rasha R. Mohammed and B. H. Majeed. "RESPONSE OF STRAWBERRY GROWTH, YIELD AND MARKETABLE FRUIT QUALITY TO SPRAYING WITH MORINGA LEAF EXTRACT, CALCIUM AND POTASSIUM SILICATE." IRAQI JOURNAL OF AGRICULTURAL SCIENCES 55, no. 1 (2024): 440–52. http://dx.doi.org/10.36103/yf9f0c65.

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Tow field and storage experiments were carried out to evaluate the effect of foliar application of moringa leaf extract, calcium, and potassium silicate on the growth, yield, and quality characteristics of strawberry fruits. The field experiment included 27 treatments: Foliar application of moringa leaf extract at the concentrations of 0, 5, and 10% which were symbolized as M0, M1, and M2 respectively, calcium at the concentrations of 0, 1, and 2 g. L-1, which were symbolized as Ca0, Ca1, and Ca2 respectively, and potassium silicate at the concentrations of 0, 1.25, and 2.50 ml. L-1 which were
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8

Rasha Raad Mohammed and Bayan Hamza Majeed. "EFFECT OF MORINGA LEAVES EXTRACT, CALCIUM, AND POTASSIUM SILICATE ON THE GROWTH, YIELD, AND QUALITY OF STRAWBERRY FRUITS." IRAQI JOURNAL OF AGRICULTURAL SCIENCES 54, no. 6 (2023): 1703–15. http://dx.doi.org/10.36103/ijas.v54i6.1869.

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A field and storage experiments were carried out in order to evaluate the effect of the foliar application of Moringa leaves extract, calcium, and potassium silicate on the growth, yield, and quality characteristics of strawberry fruits. The field experiment with three replicates was included 27 treatments consisted of the foliar application of Moringa leaf extract at the concentrations of 0, 5, and 10% which were symbolized as M0, M1, and M2 respectively, calcium at the concentrations of 0, 1, and 2 g. L-1, which were symbolized as Ca0, Ca1, and Ca2 respectively, and potassium silicate at the
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9

Jacob, C. J., C. Krarup, G. A. Díaz, and B. A. Latorre. "A Severe Outbreak of Charcoal Rot in Cantaloupe Melon Caused by Macrophomina phaseolina in Chile." Plant Disease 97, no. 1 (2013): 141. http://dx.doi.org/10.1094/pdis-06-12-0588-pdn.

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A severe outbreak of charcoal rot was observed in cantaloupe melon (Cucumis melo L.) in the summer of 2011 to 2012 in Curacaví Valley, Chile. Prior to harvest, of 72 plants per cultivar, charcoal rot prevalence varied from 32% to 82% in cvs. Colima, Charantias, Navigator, Origami, Otero, and Samoa. Symptoms were wilting and leaf browning associated with water-soaked lesions at the base of the crown with amber to dark brown exudates. Lesions dried out progressively, turned tan, and cracked. Affected plants declined and died before harvest. Reddish fruit decay was observed. Symptomatic stem and
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10

Pieczka, Adam, Bożena Gołębiowska, Piotr Jeleń, Maciej Sitarz, and Adam Szuszkiewicz. "Raman spectroscopic studies of O–H stretching vibration in Mn-rich apatites: A structural approach." American Mineralogist 105, no. 9 (2020): 1385–91. http://dx.doi.org/10.2138/am-2020-7324.

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Abstract The O–H stretching vibration mode in crystals of (Mn,Cl)-rich and F-poor minerals of the apatite-supergroup has been studied by micro-Raman spectroscopy. The main purpose was to check if such an analysis can provide a quick and simple method to assess the distribution of Ca and Mn together with traces of Fe + Mg (= Mn*) on nonequivalent cationic sites in the apatite structure, especially in small and strongly heterogeneous crystals directly in thin sections. The O–H stretching vibration mode can then be treated as a useful structural probe giving information on the M2 occupants bonded
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11

Chng, Wee J., Kihyun Kim, Jeffrey Huang, et al. "Pomalidomide Plus Dexamethasone (Pd) in the Treatment of Asian Patients with Relapsed/Refractory Myeloma (RRMM) Who Are Previously Treated with Bortezomib and Refractory to Lenalidomide - Interim Analysis of a Trial By the Asian Myeloma Network (AMN)." Blood 128, no. 22 (2016): 2130. http://dx.doi.org/10.1182/blood.v128.22.2130.2130.

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Abstract Background Pomalidomide is a 3rdgeneration immunomodulatory drug that has been approved for the treatment of Patients who progress after prior treatment with bortezomib and lenalidomide. Experience with pomalidomide in Asian patients is very limited till date. In addition, it is unclear if pomalidomide will work in patients who have been exposed to a newer generation of treatments for myeloma including carfilzomib, ixazomib, panobinostat and daratumumab. Method We conducted a prospective trial of pomalidomide (4mg daily for 21 days every 4 weeks) plus dexamethasone (40mg once weekly)
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12

Little, Philip V., Fabian Arnberg, Emma Jussing, et al. "The cellular basis of increased PET hypoxia tracer uptake in focal cerebral ischemia with comparison between [18F]FMISO and [64Cu]CuATSM." Journal of Cerebral Blood Flow & Metabolism, May 19, 2020, 0271678X2092385. http://dx.doi.org/10.1177/0271678x20923857.

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PET hypoxia imaging can assess tissue viability in acute ischemic stroke (AIS). [18F]FMISO is an established tracer but requires substantial accumulation time, limiting its use in hyperacute AIS. [64Cu]CuATSM requires less accumulation time and has shown promise as a hypoxia tracer. We compared these tracers in a M2-occlusion model (M2CAO) with preserved collateral blood flow. Rats underwent M2CAO and [18F]FMISO ( n = 12) or [64Cu]CuATSM ( n = 6) examinations. [64Cu]CuATSM animals were also examined with MRI. Pimonidazole was used as a surrogate for [18F]FMISO in an immunofluorescence analysis
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13

Tóth, Miklós, Philip Little, Fabian Arnberg, et al. "Acute neuroinflammation in a clinically relevant focal cortical ischemic stroke model in rat: longitudinal positron emission tomography and immunofluorescent tracking." Brain Struct Funct. , January 20, 2015. https://doi.org/10.1007/s00429-014-0970-y.

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Adequate estimation of neuroinflammatory processes following ischemic stroke is essential for better understanding of disease mechanisms, and for the development of treatment strategies. With the TSPO (18 kDa translocator protein) positron emission tomography (PET) radioligand [11C]PBR28, we monitored longitudinally the inflammatory response post-transient cerebral ischemia in rats, using a recently developed rat stroke model that produces isolated focal cortical infarcts with clinical relevance in size and pathophysiology. Six Sprague-Dawley rats were subjected to 90 min transient e
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14

Yeo, Leonard L., Fabian Arnberg, Arvin Chireh, et al. "The Role of Carbon Dioxide in the Rat Acute Stroke Penumbra." Frontiers in Digital Health 3 (February 4, 2022). http://dx.doi.org/10.3389/fdgth.2021.824334.

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PurposeThe vasodilatory response to inhaled CO2 occurs in the acute stroke ischemic penumbra and may be a potential therapeutic modality.MethodsTwenty-two Sprague-Dawley rats were subjected to 90-min occlusion of the M2 segment of the middle cerebral artery (M2CAO) by endovascular technique. The animals were administered different C02 concentrations and scanned serially with 9.4 T MRI. Infarct tissue was determined by diffusion-weighted imaging (DWI) and hypoperfused tissue was determined by arterial spin labeling (PWI).Results4 animals were administered room air (RA)+ 6% CO2 (group 1), 6 anim
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15

YAN, Feng-ting, and Jin-yuan JIA. "m2ACO: Multi-agent Path Planning Algorithm for Web3D Mountain Scenario." DEStech Transactions on Computer Science and Engineering, aita (April 19, 2017). http://dx.doi.org/10.12783/dtcse/aita2016/7568.

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16

Kostiuchik, Georgii, Lalith Sharan, Benedikt Mayer, Ivo Wolf, Bernhard Preim, and Sandy Engelhardt. "Surgical phase and instrument recognition: how to identify appropriate dataset splits." International Journal of Computer Assisted Radiology and Surgery, January 29, 2024. http://dx.doi.org/10.1007/s11548-024-03063-9.

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Abstract Purpose Machine learning approaches can only be reliably evaluated if training, validation, and test data splits are representative and not affected by the absence of classes. Surgical workflow and instrument recognition are two tasks that are complicated in this manner, because of heavy data imbalances resulting from different length of phases and their potential erratic occurrences. Furthermore, sub-properties like instrument (co-)occurrence are usually not particularly considered when defining the split. Methods We present a publicly available data visualization tool that enables i
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