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GENERAL INDEX LASER FLORENCE 2007 -- OPENING SPEECH -- Isaac Kaplan . 7 -- LASER SURGERY AND SAFETY - - Present Position and Future Trends on Laser Surgery in the Global -- Progress of Science & Technology Beránek 33 -- BASIC SCIENCES -- Laser Shield Designing against Reflected and Scattered Laser -- Radiation Owczarek.43 -- NEWS ON LASER SKIN MEDICINE AND SURGERY -- Endovascular Laser Intervention for Peripheral Santos. 94 -- Laser in Treatment of Finger Sprains -- J. Konečný, J. Martínková, M.Kábela, A.
Librix.eu
1st ed. 147 s. : il., tab. ; 30 cm
- MeSH
- laserová terapie s nízkou intenzitou světla MeSH
- laserová terapie metody přístrojové vybavení využití MeSH
- lasery MeSH
- mikrochirurgie metody MeSH
- Publikační typ
- kongresy MeSH
- sborníky MeSH
- Konspekt
- Ortopedie. Chirurgie. Oftalmologie
- NLK Obory
- chirurgie
Typically, polymeric composites containing nanoparticles are realized by incorporating pre-made nanoparticles into a polymer matrix by using blending solvent or by the reduction of metal salt dispersed in the polymeric matrix. Generally, the production of pre-made Au NPs occurs in liquids with two-step processes: producing the gold nanoparticles first and then adding them to the liquid polymer. A reproducible method to synthetize Au nanoparticles (NPs) into polydimethylsiloxane (PDMS) without any external reducing or stabilizing agent is a challenge. In this paper, a single-step method is proposed to synthetize nanoparticles (NPs) and at the same time to realize reproducible porous and bulk composites using laser ablation in liquid. With this single-step process, the gold nanoparticles are therefore produced directly in the liquid polymer. The optical properties of the suspensions of AuNPs in distilled water and in the curing agent have been analyzed by the UV-VIS spectroscopy, employed in the transmission mode, and compared with those of the pure curing agent. The electrical dc conductivity of the porous PDMS/Au NPs nanocomposites has been evaluated by the I-V characteristics. Scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) analysis have monitored the composition and morphology of the so-obtained composites and the size of the fabricated Au nanoparticles. Atomic force microscopy (AFM) has been used to determine the roughness of the bulk PDMS and its Au NP composites.
f Lasers, CO / CO, Lasers -- CO laser: advances in theory and experiment -- A. Thornton (USA) .88 -- SESSION 15 -- High Power Laser Applications / -- Trends in high power laser applications Kapus (Austria) .97 -- Integration of coil in high power laser systems -- A. S. Stepanov (Russia) 169 -- Laser beam profile formation in HF laser with plate-like electrodes -- A. Stournaras (Greece) 195 -- Study of laser-induced cavitation bubble in liquid nitrogen -- K.
1st ed. 209 s. ; 30 cm
- Konspekt
- Optika
- NLK Obory
- fyzika, biofyzika
- technika
Autoři předkládají výsledky endobronchiálni kryoterapie s využitím systémů na kapalný dusík, které vyvinuli, a výsledky dalších jimi využívaných minimálně invazivních postupů (laserová koagulace, resekce, hypertermie, elektrodiatermie, afterloading). Ošetření se prováděla častěji v celkové anestezii s použitím tryskové ventilace. Celkem bylo všemi zmínaěnými postupy či jejich kombinacemi léčeno 130 nemocných převážně s maligními nádorovými obstrukcemi velkých dýchacích cest. Zatím co u maligních nádorových stenóz byla účinnost lokální terapie cca 70 %, u benigních byla tato léčba úspěšná vždycky. K lokální komplikaci invazivní terapie nedošlo, u 19 nemocných byly komplikace méně závažné. Autoři udávají přednostní indikace a kontraindikace použití jednotlivých invazivních léčebných metod. Tyto metody považují za vzájemně komplementární a kombinovatelné. U nemocných s epidermoidním karcinomem velkých bronchů dokládají další použití při kombinaci laserové koagulace s kryoterapií v porovnání se samotným laserem či kryoterapií.
Authors present the results of endobronchial cryotherapy using a system of liquid nitrogen developed by them, together with other procedures of minimal invasive methods (laser coagulation, resection, hyperthermia, electrodiathermia, aftreloloading). The procedures were provided mostly in general anaesthesia using jet ventilation. Together with all of mentioned methods or with their combinations 130 patients with malignant tumorous obstructions at the great air passages were treated. In malignant tumorous stenoses, in 70 % of cases a successful effect of local therapy was achieved. In benign stenoses the therapy was in each case successful. There were no serious complications of the invasive therapy. In 19 cases only irrelevant side-effects occured. Authors recommend priority indications and contraindications of the use of invasive therapeutic methods. They consider these me thods as mutually complementary and combinable. In patients with epidermoid carcinoma of the great bronchi they refer about the combination of laser coagulation with cryotherapy in comparison to treatment with only laser therapy or cryotherapy alone.
Laser ablation in liquid (LAL), one of the attractive methods for fabrication of nanoparticles, was used for the modification of carbon cloth (CC) by deposition of palladium nanoparticles (Pd NPs); a simple stirring method was deployed to deposit Pd NPs on the CC surface. Characterization techniques viz X-ray diffraction (XRD), Fourier transform infrared (FT-IR), scanning electron microscope (SEM), energy-dispersive X-ray spectrometry (EDS) and inductively coupled plasma atomic emission spectroscopy (ICP-AES) were applied to study the surface of the ensuing samples which confirmed that LAL technique managed to fabricate and deposit the Pd NPs on the surface of CC. In addition, the catalytic prowess of the carbon cloth-Pd NPs (CC/Pd NPs) was investigated in the NaBH4- or HCOOH-assisted reduction of assorted environmental pollutants in aqueous medium namely hexavalent chromium [Cr(VI)], 4-nitrophenol (4-NP), congo red (CR) and methylene blue (MB). The CC/Pd NPs system has advantages such as high stability/sustainability, high catalytic performance and easy reusability.
- MeSH
- chemické látky znečišťující vodu analýza chemie MeSH
- chrom MeSH
- katalýza MeSH
- Kongo červeň MeSH
- kovové nanočástice chemie MeSH
- lasery MeSH
- methylenová modř chemie MeSH
- nitrofenoly MeSH
- palladium chemie MeSH
- spektrometrie rentgenová emisní MeSH
- spektroskopie infračervená s Fourierovou transformací MeSH
- textilie MeSH
- uhlík MeSH
- Publikační typ
- časopisecké články MeSH
Hemangiomy jsou běžné benigní dětské nádory. Práce představuje souborný referát přibližující problematiku této afekce a zahrnuje retrospektivní studii, jejímž cílem je zhodnocení úspěšnosti a bezpečnosti jednotlivých modalit léčby infantilních hemangiomů periorbitální a orbitální lokalizace u dětských pacientů sledovaných v období 2009–2014 na Dětské oční klinice.
The paper presents summary report which approaching the issue of this affection and includes a retrospective study aims to evaluate the effectiveness and safety of treatment modalitiesinfantilehemangiomasperiorbitalandorbitallocalizationin paediatric patients observed in the period 2009–2014 on the Children's Eye Clinic.
- MeSH
- beta blokátory * terapeutické užití MeSH
- diferenciální diagnóza MeSH
- glukokortikoidy * škodlivé účinky terapeutické užití MeSH
- hemangiom klasifikace patofyziologie terapie MeSH
- injekce MeSH
- interferon alfa terapeutické užití MeSH
- kapilární hemangiom * diagnóza etiologie patofyziologie terapie MeSH
- kojenec MeSH
- kombinovaná farmakoterapie MeSH
- kombinovaná terapie MeSH
- laserová terapie MeSH
- lidé MeSH
- nádory obličeje * terapie MeSH
- nádory očního víčka terapie MeSH
- nádory orbity MeSH
- prednison aplikace a dávkování škodlivé účinky MeSH
- propranolol aplikace a dávkování MeSH
- retrospektivní studie MeSH
- spontánní regrese nádoru MeSH
- vinkristin škodlivé účinky terapeutické užití MeSH
- výsledek terapie MeSH
- způsoby aplikace léků MeSH
- Check Tag
- kojenec MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- přehledy MeSH
An optimised method for Br quantification as a metric of brominated flame retardant (BFR) concentrations present in Waste Electrical and Electronic Equipment (WEEE) polymers is proposed as an alternative to the sophisticated, yet time consuming GC-MS methods currently preferred. A hand-held X-ray fluorescence (XRF) spectrometer was validated with Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS). Customized standard materials of specific BFRs in a styrenic polymer were used to perform an external calibration for hand-held XRF ranging from 0.08 to 12 wt% of Br, and cross-checking with LA-ICP-MS having similar LODs (0.0004 wt% for LA-ICP-MS and 0.0011 wt% for XRF). The "thickness calibration" developed here for hand-held XRF and the resulting correction, was applied to 28 real samples and showed excellent (R(2) = 0.9926) accordance with measurements obtained via LA-ICP-MS. This confirms the validity of hand-held XRF as an accurate technique for the determination of Br in WEEE plastics. This is the first use of solid standards to develop a thickness-corrected quantitative XRF measurement of Br in polymers using LA-ICP-MS for method evaluation. Thermal desorption gas chromatography mass spectrometry (TD-GC-MS) was used to confirm the presence of specific BFRs in WEEE polymer samples. We propose that expressing limit values for BFRs in waste materials in terms of Br rather than BFR concentration (based on a conservative assumption about the BFR present), presents a practical solution to the need for an accurate, yet rapid and inexpensive technique capable of monitoring compliance with limit values in situ.
