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Bone graft incorporation failure with inappropriate limb load transfer can lead to aseptic acetabular loosening of metal-on-metal prosthesis: A case report

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World Journal of Orthopedics 2024年第7期15卷 668-674页

作者： RafałStanisław Domagalski bogdan Dugiełło Sonia Rokicka Szymon Czech RafałSkowroński Dominika Rokicka Marta Patrycja Wróbel Krzysztof Strojek Tomasz Stołtny District Hospital of Orthopaedics and Trauma Surgery in PiekaryŚląskie PiekaryŚląskie 41-940Poland District Railway Hospital Medical University of SilesiaKatowice 40-760Poland Faculty of Medicine Medical University of GdańskGdańsk 80-210Poland “ALFA”Orthopaedics and Traumatology Center Białystok 15-763Poland Department of Internal Medicine Diabetology and Cardiometabolic DisordersFaculty of Medical Sciences ZabrzeMedical University of SilesiaZabrze 41-800Poland

BACKGROUND Aseptic acetabular loosening can result from various factors that can be categorized into groups:patient-related,surgeon-related and *** present a case of a 63-year-old patient who at first underwent a total hip arthro-plasty(THA)using a metal-on-metal bearing due to hip ***-up visits revealed no complications after the *** years after the THA,acetabular component loosening occurred due to subsequent trauma of the opposite hip,necessitating a revision THA using a ceramic-on-ceramic *** SUMMARY We aim to illustrate a rare case where the primary reason for undergoing THA revision was not only incomplete bone graft incorporation but also improper limb load *** the revision arthroplasty,a 9-year follow-up visit revealed improvements in all evaluation measures on questionnaire compared to the state before surgery:Harris Hip Score(before surgery:15;after surgery:95),Western Ontario and McMaster Universities Arthritis Index(before surgery:96;after surgery:0),and Visual Analogue Scale(before surgery:10;after surgery:1).CONCLUSION Opposite-hip trauma caused a weight transfer to the limb after a THA *** process led to a stress shielding effect,resulting in acetabular component loosening.

关键词： Acetabular loosening Limb load Stress shielding effect Revision hip arthroplasty Case report

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Miniature Detonating Cord (MDC) for Breaking Organic Glass Plates

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含能材料 2008年第5期16卷 618-620页

作者： bogdan ZYGMUNT Military University of Technology Mechatronics Faculty2 Kaliski Str.00-908 WarsawPoland

In order to develop a method to break the aircrafts canopy,a miniature detonating cords (MDC) of 1 mm in diameter were manufactured and its detonation properties were *** in a heavy lead confinement were also manufactured and were examined for breaking of organic glass *** showthat MDC in lead confinement with 1g plastic explosive per metre,cuts organic glass plate 10 mm thick.

关键词：有机玻璃爆炸性能物理性能功能材料塑胶炸弹

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Levels of v5 and v6 CD44 splice variants in serum of patients with colorectal cancer are not correlated with pT stage,histopathological grade of malignancy and clinical features

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World Journal of Gastroenterology 2004年第4期10卷 583-585页

作者： bogdan Zalewski 2nd Department of General and Gastroenterological Surgery Medical University of BialystokPoland

AIM:This study was designed to compare the levels of v5 and v6 splice variants of CD44 evaluated using EITSA test in the serum of patients with colorectal cancer in different stages of progression of the disease estimated in pT stage according to WHO score,histopathological grade of malignancy and some clinicopathological features. METHODS:The serum obtained from 114 persons with colorectal adenocarcinomas was examined using ELISA method,pT stage and grade of malignancy of the tumour were examined in formalin fixed and paraffin embedded materials obtained during operation. RESULTS:Only the level of CD44 v5 in the serum of patients before operation with G2 pT4 tumour was lower than that in other probes and the difference was statistically significant. We did not find any other correlations between the level of v5 and v6 CD44 variants and other evaluated parameters. CONCLUSION:The level of CD44 v5 and v6 estimated by ELISA test in the serum can not be used as a prognostic factor in colorectal cancer.

关键词： Alternative Splicing Adenocarcinoma Adult Aged Aged, 80 and over Antigens, CD44 Colorectal Neoplasms Disease Progression Enzyme-Linked Immunosorbent Assay Female Humans Male Middle Aged Predictive Value of Tests Prognosis Tumor Markers, Biological

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Response of photosynthesis,growth,and acorn mass of pedunculate oak to diff erent levels of nitrogen in wet and dry growing seasons

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Journal of Forestry Research 2023年第1期34卷 167-176页

作者： Krunoslav Sever Saša bogdan ŽeljkoŠkvorc Faculty of Forestry and Wood Technology University of ZagrebSvetošimunska 2510000 ZagrebCroatia

The objective was to examine the effects of optimal leaf nitrogen levels>2.0%and suboptimal levels<2.0%,nitrogen nutrition on net photo synthetic rate,stem diameter increment,height growth increment and acorn mass of pedunculate oak during 2010 in the absence of drought stress and during 2011 under the impact of moderate drought *** to the results,moderate drought stress significantly reduced net photo synthetic rate,stem diameter increment and height growth increment,while acorn mass was not *** nitrogen nutrition significantly reduced the net photo synthetic rate and stem diameter increment only in the wet year,acorn mass in both wet and dry years,while height growth increment was not significantly reduced by suboptimal nitrogen nutrition in either *** results indicate that optimal nitrogen levels can stimulate photo synthetic rate and stem diameter increment of pedunculate oak only in the absence of moderate drought ***,the results show that moderate drought stress is a more dominant stressor for photosynthesis and growth of pedunculate oak than suboptimal nitrogen nutrition,while for acorn development,it is the more dominant stressor.

关键词： Quercus robur L. Drought stress Net photosynthic rate Stem diameter increment Height growth increment Acorn mass

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Stressed axons craving for glial sugar: links to regeneration?

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Neural Regeneration Research 2022年第2期17卷 304-306页

作者： Elisabetta Babetto bogdan Beirowski Hunter James Kelly Research Institute Jacobs School of Medicine and Biomedical SciencesUniversity at BuffaloBuffaloNYUSA Department of Biochemistry Jacobs School of Medicine and Biomedical SciencesUniversity at BuffaloBuffaloNYUSA Department of Pharmacology and Toxicology Jacobs School of Medicine and Biomedical SciencesUniversity at BuffaloBuffaloNYUSA

Extract The contrary but interrelated processes of axon degeneration and regeneration are the yin and yang of many neurodegenerative conditions. Here we discuss recent evidence for metabolic cross-talk between glia and injured axons regulating these processes. We especially focus on potential bioenergetic mechanisms as to how axon-flanking glia may promote regeneration.

关键词： degeneration conditions. processes.

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MnFe2O4 nanoparticles as new catalyst for oxidative degradation of phenol by peroxydisulfate

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Journal of Environmental Sciences 2017年第3期29卷 269-277页

作者： Marcela Stoia Cornelia Muntean bogdan Militaru Faculty of Industrial Chemistry and Environmental Engineering Politehnica University TimisoaraR0-300223 TimisoaraRomania Research Institute for Renewable Energy Politehnica University TimisoaraRO-300006TimisoaraRomania

Manganese ferrite nanopowder was prepared by thermal decomposition at 400℃ of the gel synthesized from manganese and iron nitrates and polyvinyl alcohol. X-ray diffractometry evidenced that manganese ferrite was formed as single crystalline phase at this temperature. Scanning electron microscope images evidenced the formation of very fine spherical particles （d 〈 11 nm） of manganese ferrite, with specific surface area of 147 m2/g. The powder obtained at 400℃ was used as a catalyst for the oxidative degradation of phenol in aqueous solutions, in the presence of potassium peroxydisulfate as oxidant. High phenol removal efficiencies above 90% were reached at： pH 3-3.5, phenol initial concentration around 50 mg/L, peroxydisulfate：phenol mass ratio 10：1, and catalyst dose 3 g/L. Total organic carbon measurements showed that the degradation of phenol goes, under these conditions, to mineralization in an extent of 60%.

关键词： Manganese ferriteNanoparticlesPhenolPeroxydisulfateCatalytic oxidation

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Approximation of Integrable Functions by General Linear Operators of Their Fourier Series

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Acta Mathematica Sinica,English Series 2012年第6期28卷 1119-1134页

作者： Wodzimierz LENSKI bogdan SZAL Faculty of Mathematics Computer Science and Econometrics University of Zielona Gra

The pointwise estimates of the deviation Tn,A,Bf（·） -- f（·） in terms of moduli of continuity w. f and w. f there are proved. Analogical results on norm approximation with remarks and corollaries are also given. In the results there are used the essentially weaker conditions than these in [Mittal, M. L.： J. Math. Anal. Appl., 220, 434-450）（1998） Theorem 1, p. 4377.

关键词： Rate of approximation summability of Fourier series

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Geomechanical effects of CO_2 storage in depleted gas reservoirs in the Netherlands:Inferences from feasibility studies and comparison with aquifer storage

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Journal of Rock Mechanics and Geotechnical Engineering 2016年第6期8卷 846-859页

作者： bogdan Orlic TNO Energy Division

In this paper,the geomechanical impact of large-scale carbon dioxide(CO) storage in depleted Dutch gas fields is compared with the impact of COstorage in saline *** geomechanical behaviour of four potential COstorage sites is examined using flow and geomechanical *** gas reservoirs in the Netherlands are found in fault blocks,one to a few kilometres wide,laterally bounded by sealing *** depletion or re-pressurization in the lateral direction is seldom an issue because of a lack of active *** pressure changes are therefore limited to a gas-bearing fault block,while the induced stress changes affect the gas reservoir and extend 1-3 km away into the surrounding *** in favour of COstorage in depleted gas fields are:proven seal quality,availability of field data,no record of seal integrity failure by fault reactivation from the seismically active producing Dutch gas fields,and the potential benefits of restoring the virgin formation pressure and stress state to geomechanical *** the other hand,COinjection in saline aquifers causes pressure build-up that exceeds the virgin hydrostatic *** perturbations resulting from pressure build-up affect large areas,extending tens of kilometres away from the injection *** stresses in top seals ***,small and do not exceed a few tenths of megapascal for a pressure build-up of a few megapascals in the storage *** effects on top seals are weak,but could be enhanced close to the injection zone by the thermal effects of *** related to characterisation of large areas affected by pressure build-up are significant,and seal quality and continuity are more difficult to be demonstrated for aquifers than for depleted gas reservoirs that have held hydrocarbons for millions of years.

关键词： Carbon dioxide(CO_2) injection CO_2 storage Geomechanics of CO_2 storage Geomechanical modelling

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Bingham Flows in Periodic Domains of Infinite Length

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Chinese Annals of Mathematics,Series B 2018年第2期39卷 183-200页

作者： Patrizia DONATO Sorin MARDARE bogdan VERNESCU Dedicated to Philippe G. Ciarlet on the occasion of his 80th birthda

The Bingham fluid model has been successfully used in modeling a large class of non-Newtonian fluids. In this paper, the authors extend to the case of Bingham fluids the results previously obtained by Chipot and Mardare, who studied the asymptotics of the Stokes flow in a cylindrical domain that becomes unbounded in one direction, and prove the convergence of the solution to the Bingham problem in a finite periodic domain, to the solution of the Bingham problem in the infinite periodic domain, as the length of the finite domain goes to infinity. As a consequence of this convergence, the existence of a solution to a Bingham problem in the infinite periodic domain is obtained, and the uniqueness of the velocity field for this problem is also shown. Finally, they show that the error in approximating the velocity field in the infinite domain with the velocity in a periodic domain of length 2l has a polynomial decay in , unlike in the Stokes case （see [Chipot, M. and Mardare, S., Asymptotic behaviour of the Stokes problem in cylinders becoming unbounded in one direction, Journal de Mathgmatiques Pures et Appliqudes, 90（2）, 2008, 133-159]） where it has an exponential decay. This is in itself an important result for the numerical simulations of non-Newtonian flows in long tubes.

关键词： Bingham fluids Variational inequalities

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Sol-gel synthesis, surface and magnetic properties of nanocrystalline SmAlO_3

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Journal of Rare Earths 2010年第4期28卷 602-605页

作者： Dimitar Petrov bogdan Angelov Vasil Lovchinov Department of Inorganic and Physical Chemistry University of Food Technologies 26 Maritsa Blvd. 4002 Plovdiv Bulgaria Institute of Solid State Physics Bul garian Academy of Sciences 72Tzarigradsko Chaussee Blvd. 1784 Sofia Bulgaria

Nanocrystals of single-phase samarium monoaluminate (SmAlO3) were synthesized and studied for the first time. Malic acid was employed as a new complexing agent in the sol-gel process. The material was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDS), specific surface area and density. The lowest size of the nanoparticles was about 50–60 nm and some of them formed agglomerates. The binding energies of core-level electrons of Sm (3d, 4d, 4f, ...

关键词： SmAlO3 nanocrystals surface properties magnetic susceptibility rare earths

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