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Model acupuncture point:Bone marrow-derived stromal stem cells are moved by a weak electromagnetic field

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World Journal of Stem Cells 2016年第10期8卷 342-354页

作者： Artem n Emelyanov Marina v Borisova vera v Kiryanova Laboratory of High Laser and Magnetic Technology North-Western State Medical University Training Laboratory of Physical Chemistry Institute of ChemistrySt. Petersburg State University Department of Physical Therapy and Rehabilitation North-Western State Medical University

AIM To show the existence of a structural formative role of magnetic fields(MFs) with respect to biological objects by using our proposed model of an *** We introduced a magnetised 10-100 μT metal rod(needle) into culture dishes with a negatively charged working surface and observed during 24 h how cells were arranged by MFs and by electrical fields(EFs) when attached. Rat and human bone marrow-derived stromal stem cells(r BMSCs and h BMSCs), human nonadherent mononuclear blood cells, nCTCs and A172 cells, and Escherichia coli(E. coli) were evaluated. The dish containing BMSCs was defined as the model of an acupoint. r BMSCs proliferative activity affected by the needle was investigated. For investigating electromagnetic field structures, we used the gas discharge visualisation(GDv) *** During 24 h of incubation in 50-mm culture dishes, BMSCs or the nonadherent cells accumulated into a central heap in each dish. BMSCs formed a torus(central ring) with an inner diameter of approximately10 mm only upon the introduction of the needle in the centre of the dish. The cells did not show these effects in 35- or 90-mm culture dishes or hydrophobic dishes or rectangular cuvettes. nCTCs and A172 cells showed unstable the effects and only up to two weeks after thawing. Moreover, we observed that the appearance of these effects depended on the season. In winter, BMSCs showed no the effects. GDv experiments revealed that the resonant annular illumination gradually formed from 10 to 18-20 s in polar solutions with and without cell suspension of BMSCs, nCTCs and E. coli when using circular 50-mm dishes, stimulation at 115 v and switching of the electrode poles at 1 kH z. All these data demonstrate the resonant nature of the central ring. Significant influence of MFs on the rB MSC proliferation rate was not *** BMSCs can be moved by MFs when in the presence of a constant EF and MF, when the cells are in the responsive functional state, and whe

关键词： Stem cell movement Magnetic targeting Acupuncture Model acupoint Frizzled-related protein Biology resonance Cytoplasm movement Glycocalyx

Quantum-dot microlasers based on whispering gallery mode resonators

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Light(Science & Applications) 2021年第5期10卷 785-795页

作者： A.E.Zhukov.n.v.Kryzhanovskaya E.l.Moiseev M.v.Maximov Laboratory of quantum optoelectronics National Research University Higher School of EconomicsKantemirovskaya 3ASt.Petersburg 194100Russia nanophotonics laboratory Alferov UniversityKhlopina 8/3St.Petersburg 194021Russia

The subject of this paper is microlasers with the emission spectra determined by the whispering gallery *** to the total internal reflection of light on the sidewalls,a high Q-factor is achieved until the diameter is comparable to the *** light emission predominantly occurs in the plane of the structure,which facilitates the microlaser integration with other *** focus on microdisk lasers with various types of the In(Ga)As quantum dots(QDs).Deep localization of charge carriers in spatilly separated regions suppresses the lateral diffusion and makes it possible to overcome the undesirable effect of non-adiative recombination in deep ***,using conv.n.ional epitaxial structures and relatively simple post-growth processing methods,it is possible to realize small microlasers capable of operating without temperature stabilization at elevated *** low sensitivity of QDs to epitaxial and manufacturing defects allows fabricating microlasers using IIv heterostructures grown on silicon.

关键词： Quantum mode overcome

Results of the Main Phase of Ion Separation in the Process of Plasma-Optical Mass Separation

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Plasma Science and Technology 2015年第10期17卷 862-868页

作者： v.M.BARDAKOv S.D.Iv.n.v A.v.KAZAnTSEv.n.A.STROKIn Institute for Physics and Technology Irkutsk State Technical University

This paper presents separation results of a mixture of nitrogen, argon and krypton ions in the process of plasma-optical mass separation on the POMS-E-3 separator model. We determined the behavior of the separation with a change in the value of magnetic field induction in the azimuthator and in the degree of compensation of the spatial charge in ion flows. An analysis is performed for experimental data by correlation with the results of a theoretical study and numerical experiments. The objectives of future experiments are outlined.

关键词： plasma-optical mass separation plasma accelerator trajectories spatial charge

The Direct Measurements of the Plasma Electric Potential by Heavy Ion Beam Probe on T-10 Tokamak

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中国核科技报告 1999年第S4期 370-370页

作者： A.v.melnikov,L.G.Eliseev Russian Research Centre “Kurchatov Institute” Moscow Russia Russian Research Centre “Kurchatov Institute” Moscow Russia

The Heavy Ion Beam Probe （HIBP） diagnostics on T-10 tokamak （R=150 cm, a=33 cm） was modified to measure the local values of the plasma potential in ECRH plasma (B0=2.2～2.5 T, Ip1=75～280 kA). The T1+ion beam with... 详细信息

关键词： The Direct Measurements of the Plasma Electric Potential by Heavy Ion Beam Probe on T-10 Tokamak

A new Method of Synthesis of Azo Schiff Base Ligands with Azo and Azomethine Donors： Synthesis of n-4-Methoxybenzylidene-2-（3-hydroxyphenylazo）-5-hydroxyaniline and Its nickel（Ⅱ） Complex

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Chinese Journal of Chemistry 2007年第6期25卷 869-871页

作者： OFORKA, n. C. MKPEnIE, v. n. Department of Pure and Industrial Chemistry University of Port Harcourt P. M. B. 5323 Port Harcourt Nigeria

A new method for the synthesis of azo Schiff an base ligand in which the azo and azomethine groups are coordination sites was developed through a Schiff base precursor. The precursor, n-4-methoxybenzylidene-3-hydroxyphenylamine （SB） derived from 3-aminophenol was regioselectively coupled with a diazonium ion para to the hydroxyl group of the amine component of the Schiff base. The para selectivity was controlled by the directing effect of the hydroxyl group. The ligand and its nickel（Ⅱ） complex were characterized by elemental analyses, IR and Uv-vis spectroscopy. The analytical and spectral data supported the mononuclear formulation of the complex with metal to ligand ratio （M ： L = 1 ： 2） and suggested a square planar geometry for the complex.

关键词： synthesis azo compound Schiff base ligand azo and azomethine donor

Melt-spun thin ribbons of shape memory TiniCu alloy for micromechanical applications

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International Journal of Smart and nano Materials 2011年第2期2卷 68-77页

作者： A.v.Shelyakov.n.n.Sitnikov v.v.Koledov D.S.Kuchin A.I.Irzhak n.Yu.Tabachkova Department of Solid State Physics and nanosystems National Research Nuclear University“MEPhI”Kashirskoe shosse 31115409 MoscowRussian Federation Department of Physics of Magnetic Phenomena Kotelnikov Institute of Radio-Engineering and Electronics of Russian Academy of SciencesMohovaya st.11/7125009 MoscowRussian Federation Department of Material Science of Semiconductors and Dielectrics National University of Science and Technology“MISiS”Leninsky prospect 4119049 MoscowRussian Federation

The development of micromechanical devices(MEMS and nEMS)on the basis of nanostructured shape memory alloys is reported.A Ti_(50)ni_(25)Cu_(25)(at.%)alloy fabricated by the melt spinning technique in the form of a ribbon with a thickness around 40µm and a width about 1.5 mm was chosen as a starting *** parameters were optimized to produce the alloy in an amorphous *** thickness of the ribbon was reduced to 5–14µm by means of electrochemical polishing.A nanostructural state of the thin ribbons was obtained via the dynamic crystallization of the amorphous alloy by application of a single electric pulse with duration in the range of 300–900µs.A microtweezers prototype with a composite cantilever of 0.8µm thick and 8µm long was developed and produced on the basis of the obtained nanostructured thin ribbons by means of the focused ion beam *** deformation of the micromanipulator was achieved by heating using semiconductor laser radiation in a vacuum chamber of scanning ion-probe microscope.

关键词： melt-spun ribbon shape memory alloy composite micromanipulator microtweezers

Malpractice or masterful practice?navigating vicarious liability in healthcare

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World Journal of Clinical Cases 2025年第2期13卷 10-13页

作者： Satvik n Pai naveen Jeyaraman Madhan Jeyaraman Swaminathan Ramasubramanian Department of Orthopaedics PES University Institute of Medical Sciences and ResearchBengaluru 560100KarnatakaIndia Department of Orthopaedics ACS Medical College and HospitalDr MGR Educational and Research InstituteChennai 600077Tamil NaduIndia Department of Orthopaedics Government Medical CollegeOmandurar Government EstateChennai 600002Tamil NaduIndia

In the intricate landscape of healthcare,vicarious liability looms large,shaping the responsibilities and actions of healthcare practitioners and administrators *** by a poignant scenario of a medication error,this article navigates the complexities of vicarious liability in *** explains the legal basis and ramifications of this theory,emphasizing its importance in fostering responsibility,protecting patient welfare,and easing access to *** paper explores the practical effects of vicarious responsibility on day-to-day operations,leadership practices,and decision-making processes via the eyes of senior consultants,junior doctors,and hospital *** comprehensive insights and real-world examples,it underscores the imperative of fostering a culture of accountability,communication,and quality care to navigate the intricate web of liabilities inherent in modern healthcare.

关键词： vicarious liability Healthcare Responsibility Litigation Patient welfare

Current considerations for the management of liver echinococcosis

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World Journal of Gastroenterology 2025年第10期31卷 159-163页

作者： Efstathios T Pavlidis Ioannis n Galanis Theodoros E Pavlidis The 2nd Department of Propaedeutic Surgery Hippokration General HospitalSchool of MedicineAristotle University of ThessalonikiThessaloniki 54642Greece

Echinococcosis or hydatid disease is induced mainly by Echinococcus granulosus and occasionally by Echinococcus multilocularis(alveolaris)and affects the liver *** alveolar echinococcosis is similar to carcinoma in appearance,and without treatment,it can lead to *** is based on current imaging *** management is the cornerstone of *** removal of the cyst(total pericystectomy or hepatectomy)ensures a permanent cure and should be the first-choice treatment for cystic *** evacuation,partial cystectomy,and drainage or omentoplasty,may be alternative choices in difficult ***,mebendazole and praziquantel are options for treating small cysts and prev.n.ing recurrence after *** the efforts,alveolar echinococcus is not usually amenable to surgical management,except in the early stage,which is less common,and management by albendazole is ***,there are few recent reports of major operations(ex-vivo hepatectomy,autotransplantation and vascular reconstruction)in adv.n.ed stages.

关键词： Hepatic echinococcosis Hydatid disease Echinococcus granulosus Echinococcus alveolaris Hepatectomy for parasite diseases Pericystectomy

Current opinions on the use of prophylactic antibiotics in patients undergoing laparoscopic cholecystectomy

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World Journal of Gastrointestinal Surgery 2025年第3期17卷 427-430页

作者： Efstathios T Pavlidis Ioannis n Galanis Theodoros E Pavlidis The Second Department of Propaedeutic Surgery Hippokration General HospitalSchool of MedicineAristotle University of ThessalonikiThessaloniki 54642Greece

Inappropriate use of antibiotics leads to microbial ***-dose antibio-tic prophylaxis prior to laparoscopic cholecystectomy is well known for reducing the risk of postoperative infection in high-risk patients despite some conflicting ***-risk patients are those who are older than 70 years,have diabetes mellitus,whose operation time exceeded 120 minutes,have acute cholecystitis,experienced iatrogenic intraoperative gallbladder perforation resulting in bile or gallstone spillage,suffered from obstructive jaundice,or were deemed *** gallbladder perforation,one dose of antibiotic prophylaxis is ***,guidelines are needed and must be strictly ***-lactic treatment is not needed for patients at low risk of developing sepsis fo-llowing elective laparoscopic cholecystectomy,although the opposite is ***,superficial surgical infections are related to low *** without risk factors have a very low risk of ***,the routine use of anti-biotic prophylaxis in elective laparoscopic cholecystectomy is not recommended.

关键词： Prophylactic antibiotics Gallstone disease Laparoscopic cholecystectomy Acute cholecystitis Skin incision infection Septic complications