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Start Over Author "A. Konovalov" Publisher elsevier bv
1,110 results on '"A. Konovalov"'

3. Mesoporous molybdate-substituted hydroxyapatite nanopowders obtained via a hydrothermal route

Author

Goldberg, Margarita A., primary, Donskaya, Nadezhda O., additional, Valeev, Dmitry V., additional, Fomin, Alexander S., additional, Murzakhanov, Fadis F., additional, Leonov, Alexander V., additional, Konovalov, Anatoliy A., additional, Antonova, Olga S., additional, Shoppert, Andrei A., additional, Kudryavtsev, Egor A., additional, Gafurov, Marat R., additional, Barinov, Sergey M., additional, and Komlev, Vladimir S., additional

Published
2024
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8. Effects of Tb3+ on properties of luminescent calcium sulfate cement

Author

Khayrutdinova, Dinara R., primary, Goldberg, Margarita A., additional, Fomin, Alexander S., additional, Nosova, Elizaveta D., additional, Krokhicheva, Polina A., additional, Smirnov, Sergey V., additional, Pudovkin, Maxim S., additional, Oleynikova, Ekaterina I., additional, Egorov, Alexey A., additional, Konovalov, Anatoliy A., additional, Ogarkov, Alexander I., additional, Obolkina, Tatiana O., additional, Barinov, Sergey M., additional, and Komlev, Vladimir S., additional

Published
2024
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9. Vat photopolymerization 3D printing of yttria-stabilized ZrO2 ceramics: effects of a sintering additive (Na2O – 2SiO2), biocompatibility, and osteointegration

Author

Smirnov, S.V., primary, Protsenko, P.V., additional, Goldberg, M.A., additional, Obolkina, T.O., additional, Antonova, O.S., additional, Malyutin, K.V., additional, Kochanov, G.P., additional, Konovalov, A.A., additional, Nevolin, Yu.M., additional, Volkov, A.V., additional, Akhmedova, S.A., additional, Kirsanova, V.A., additional, Sviridova, I.K., additional, Sergeeva, N.S., additional, Barinov, S.M., additional, Ievlev, V.M., additional, and Komlev, V.S., additional

Published
2024
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19. Enhanced bone repair by silver-doped magnesium calcium phosphate bone cements

Author

Polina A. Krokhicheva, Margarita A. Goldberg, Alexander S. Fomin, Dinara R. Khayrutdinova, Olga S. Antonova, Alexander S. Baikin, Anatoliy A. Konovalov, Aleksander V. Leonov, Ivan V. Mikheev, Ekaterina M. Merzlyak, Valentina A. Kirsanova, Irina K. Sviridova, Natalia S. Sergeeva, Sergey M. Barinov, and Vladimir S. Komlev

Subjects
Process Chemistry and Technology, Materials Chemistry, Ceramics and Composites, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials
Published
2023

21. “Surgery is Art. You Should be One of the Artists” Juha Hernesniemi (1947–2023)

Author

Ramirez, Manuel Encarnacion, primary, Türe, Uğur, additional, Güngör, Abuzer, additional, Nurmukhametov, Renat, additional, Campero, Alvaro, additional, Baldoncini, Matias, additional, Kaprovoy, Stanislav, additional, Konovalov, Nikolay, additional, Mura, Jorge, additional, Lawton, Michael T., additional, Montemurro, Nicola, additional, and Morcos, Jacques J., additional

Published
2023
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25. 'Unshaved Intradermal Running Suture for Elective Cranial Neurovascular Surgeries'

Author

Anton Konovalov, Mariana Tlisova, Vadim Gadzhiagaev, Fyodor Grebenev, and Elizaveta Safronova

Subjects
Surgery, Neurology (clinical)
Abstract

In this paper, we analyze the experience and propose a method of incision and stitching of the postoperative scalp wound without shaving hair in elective neurosurgical interventions.Between January 2021 and May 2022, 44 patients with various neurovascular pathologies were included in the study. The age of the patients varied from 28 to 58 years. All patients underwent elective surgical interventions with intradermal cosmetic sutures without shaving hair. The results of published observational series of neurosurgical patients with unshaved hair were also analyzed.Treatment of the surgical field, scalp, and incision were performed without shaving hair in 44 cases. The technique of intradermal suture without shaving hair was used in 31 cases of the classical pterional approach, in 11 cases of minipteronal, in 1 case of parasagittal and in 1 case of retrosigmoid suboccipittal approaches. The mean age of the patients was 47.5 years (±8.82). The average length of stay in the clinic was 8.02 days (±2.04). The sutures were removed on the 5th-8th day. All cases were operated on for elective neurovascular interventions: aneurysms without rupture (95.4%), arteriovenous malformations (2.3%), and cavernous angiomas (2.3%). All but one patient (2.3%) had no wound complications - the suture ruptured at the stage of its removal from the skin.Our results also show that the use of a nonresorbable intradermal suture combined with hair preservation does not affect the risk of infection.

Published
2023

27. CeO2–TiO2 oxides with core-shell structure

Author

Igor V. Zagaynov and Anatoly A. Konovalov

Subjects
Process Chemistry and Technology, Materials Chemistry, Ceramics and Composites, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials
Published
2023

31. Surgical Treatment Efficacy of CSF-Venous Fistulas: Systematic Review

Author

Anton Konovalov, Vadim Gadzhiagaev, Evgeniy Vinogradov, Nikita Nikitin, Shalva Eliava, and Nikolay Konovalov

Subjects
Treatment Outcome, Intracranial Hypotension, Humans, Surgery, Fibrin Tissue Adhesive, Prospective Studies, Neurology (clinical), Subarachnoid Space, Veins
Abstract

Cerebrospinal fluid (CSF)-venous fistula presents a pathologic connection between spinal subarachnoid space and adjacent epidural vein or veins. It is one of the 3 main causes of spontaneous intracranial hypotension along with dural defects and meningeal diverticulum. We performed a systematic review of the literature and analyzed individual participants' data focusing on clinical outcomes after different treatment modalities of CSF-venous fistula.Systematic review was conducted according to PRISMA recommendations. Literature search was performed in PubMed and Web of Science databases with following key phrases: "CSF-venous fistula", "Spontaneous intracranial hypotension". Overall, 97 articles were found during the initial search; 15 were included for the final analysis, with a total number of 137 patients.Epidural blood patch (EBP) was performed as a first-line treatment in 37.1% of patients in individual data group, often not combined with fibrin glue (61.5%). Either partial (69.2%) or no resolution (30.8%) of symptoms was achieved after EBP injection. Nerve root ligation was the most common method of exclusion of CSF-venous fistula. Complete resolution of symptoms was achieved in 69.0% of patients, in 21.4% it was partial and in 9.5% no regress was found. Endovascular treatment was described only in 1 study.Surgical ligation of fistula is a treatment of choice. In approximately 70% of patients complete long-term resolution of symptoms is achieved after surgery. Endovascular treatment and fibrin glue injections are prospective and evolving options, which require further investigation.

Published
2022

32. Surgical Treatment of Large and Giant Anterior Cerebral Artery Aneurysms in the Endovascular Era: Analysis of Large Clinical Series

Author

Vadim S. Gadzhiagaev, Oleg D. Shekhtman, Anton N. Konovalov, Shalva S. Eliava, Yuri V. Pilipenko, Dmitriy N. Okishev, and Yulia V. Strunina

Subjects
Microsurgery, Treatment Outcome, Anterior Cerebral Artery, Humans, Intracranial Aneurysm, Surgery, Neurology (clinical), Cerebral Angiography, Retrospective Studies
Abstract

Analysis of results of surgical treatment of 112 patients with large and giant anterior cerebral artery (ACA) aneurysms.This is the largest clinical series of large and giant ACA aneurysms ever reported. Retrospective analysis of medical charts, radiographic studies, and intraoperative videos was performed. Univariate and multivariate analysis of relations among 3 types of outcomes (complete aneurysm occlusion, ischemic complications, and clinical outcomes) and predicting factors was performed.Most aneurysms were communicant (84.8%). Aneurysms of the A1 segment and distal segments (A2-A5) were encountered rarely. Complete aneurysm occlusion (class I) was shown in 95 cases (90.5%). In 4 patients, only exploration and wrapping were performed because of severe atherosclerosis and chronic intraluminal thrombi. Partial occlusion (class III) was shown in 2 patients, and neck residual (class II) in 4 patients. Cerebral ischemia developed in 29 patients postoperatively. Occlusion or injury of the A1 segment and anterior communicating artery perforators and recurrent branch of Heubner were the most common reason for ischemic complications. At follow-up, 97 patients (86.6%) had favorable outcomes. Ten patients (8.9%) had unfavorable outcomes because of postoperative complications.Microsurgery provides effective and relatively safe occlusion of complex ACA aneurysms. Direct clipping can be applied in most cases independent of their precise location. In certain cases, alternative methods can be safely used. According to multivariate analysis, giant aneurysm size, aneurysm-related mass effect, involvement of large arterial branches in the aneurysm wall, and intraoperative complications were significant predicting factors for ischemic complications.

Published
2022

39. Enhanced bone repair by silver-doped magnesium calcium phosphate bone cements

Author

Krokhicheva, Polina A., primary, Goldberg, Margarita A., additional, Fomin, Alexander S., additional, Khayrutdinova, Dinara R., additional, Antonova, Olga S., additional, Baikin, Alexander S., additional, Konovalov, Anatoliy A., additional, Leonov, Aleksander V., additional, Mikheev, Ivan V., additional, Merzlyak, Ekaterina M., additional, Kirsanova, Valentina A., additional, Sviridova, Irina K., additional, Sergeeva, Natalia S., additional, Barinov, Sergey M., additional, and Komlev, Vladimir S., additional

Published
2023
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43. Synthesis and phases relationships of Si6-Al O N8- in a wide range of z

Author

Nailya S. Akhmadullina, Anton S. Lysenkov, Anatoly A. Konovalov, Ekaterina A. Obraztsova, Konstantin A. Kim, and Yury F. Kargin

Subjects
Process Chemistry and Technology, Materials Chemistry, Ceramics and Composites, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials
Published
2022

44. Influence of the porphyrin structure and linker length on the interfacial behavior of phospholipid-porphyrin conjugates

Author

Louis-Gabriel Bronstein, Paul Cressey, Wasim Abuillan, Oleg Konovalov, Maciej Jankowski, Véronique Rosilio, and Ali Makky

Subjects
Biomaterials, Porphyrins, Colloid and Surface Chemistry, Surface Properties, Water, Microscopy, Atomic Force, Phospholipids, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials
Abstract

Phospholipid-porphyrin (Pl-Por) conjugates consist of porphyrin derivatives grafted to a lysophosphatidylcholine backbone. Owing to their structural similarities with phospholipids, Pl-Por conjugates can self-assemble into liposome-like assemblies. However, there is a significant lack of information concerning the impact of the porphyrin type and the length of the alkyl chain bearing the porphyrin on the interfacial behavior of the Pl-Por conjugates. We hypothesized that changing the chain length and the porphyrin type could impact their two-dimensional phase behavior and modulate the alignment between the two chains.6 Pl-Por conjugates with different alkyl chain lengths in the sn2 position of C16 lysophosphatidylcholine and coupled to either pheophorbide-a or pyropheophorbide-a were synthesized. Their interfacial behavior at the air/water interface was assessed using Langmuir balance combined to a variety of other physical techniques including Brewster angle microscopy, atomic force microscopy and X-ray reflectometry.Our results showed that all 6 Pl-Por form stable monolayers with the porphyrin moiety at the air/water interface. We also showed that changing the porphyrin moiety controlled the packing of the monolayer and thus the formation of organized domains. The chain length dictated the structure of the formed domains with no evidence of the alignment between the two chains.

Published
2022

50. In Situ Characterisation of Graphene Growth on Liquid Copper-Gallium Alloys: Paving the Path for Cost-Effective Synthesis

Author

Belova, Valentina, primary, Letellier, Florian, additional, Jankowski, Maciej, additional, de Voogd, Marc, additional, Prabhu, Mahesh, additional, Yao, Lipeng, additional, van Baarle, Gertjan, additional, Renaud, Gilles, additional, Saedi, Mehdi, additional, Groot, Irene M.N., additional, and Konovalov, Oleg V., additional

Published
2023
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