boron/переутомление

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Influence of Boron Additions and Heat Treatments on the Fatigue Resistance of CoCrMo Alloys.

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Cobalt-based alloys are widely used in the manufacture of joint prostheses. In this study, the effect of boron additions and heat treatment on the ASTM F75 was evaluated by rotating bending fatigue. The boron ranged from 0.06⁻1 wt %. The alloys were tested in as-cast and heat-treated conditions. In

Boron neutron capture therapy in the treatment of locally recurred head and neck cancer.

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OBJECTIVE Head and neck carcinomas that recur locally after conventional irradiation pose a difficult therapeutic problem. We evaluated safety and efficacy of boron neutron capture therapy (BNCT) in the treatment of such cancers. METHODS Twelve patients with inoperable, recurred, locally advanced

Boron Neutron Capture Therapy in the Treatment of Recurrent Laryngeal Cancer.

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OBJECTIVE To investigate the safety and efficacy of boron neutron capture therapy (BNCT) as a larynx-preserving treatment option for patients with recurrent laryngeal cancer. METHODS Six patients with locally recurrent squamous cell laryngeal carcinoma and 3 patients with persistent laryngeal cancer

Boron neutron capture therapy for advanced salivary gland carcinoma in head and neck.

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OBJECTIVE Boron neutron capture therapy (BNCT) is among the radiation treatments known to have a selective lethal effect on tumor cells. This study summarizes the tumor responses and the acute and late adverse effects of BNCT in the treatment of patients with both recurrent and newly diagnosed T4

Boron neutron capture therapy in the treatment of locally recurred head-and-neck cancer: final analysis of a phase I/II trial.

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OBJECTIVE To investigate the efficacy and safety of boron neutron capture therapy (BNCT) in the treatment of inoperable head-and-neck cancers that recur locally after conventional photon radiation therapy. METHODS In this prospective, single-center Phase I/II study, 30 patients with inoperable,

Boron neutron capture therapy outcomes for advanced or recurrent head and neck cancer.

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We retrospectively review outcomes of applying boron neutron capture therapy (BNCT) to unresectable advanced or recurrent head and neck cancers. Patients who were treated with BNCT for either local recurrent or newly diagnosed unresectable head or neck cancers between December 2001 and September

A versatile photochromic dithienylethene-containing β-diketonate ligand: near-infrared photochromic behavior and photoswitchable luminescence properties upon incorporation of a boron(III) center.

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A versatile dithienylethene-containing β-diketonate ligand and its boron(III) compounds have been successfully synthesized. Upon photocyclization, the ligand shows a new absorption band at 630 nm with good fatigue resistance and high thermal stability. Incorporation of the boron center has been

Fracture resistance of dental nickel-titanium rotary instruments with novel surface treatment: Thin film metallic glass coating.

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OBJECTIVE Dental nickel-titanium (NiTi) rotary instruments are widely used in endodontic therapy because they are efficient with a higher success rate. However, an unpredictable fracture of instruments may happen due to the surface characteristics of imperfection (or irregularity). This study

An outbreak of a food-related illness resembling boric acid poisoning.

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An outbreak of an illness suggestive of boric acid poisoning occurred among 51 persons who had eaten lunch at the cafeteria of the United States Agency for International Development in Islamabad, Pakistan, on February 11, 1990. Affected patients had headache and severe myalgias 2 to 4 hours after

Descriptions of crack growth behaviors in glass-ZrO2 bilayers under thermal residual stresses.

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This study was intended to separate residual stresses arising from the mismatch in coefficients of thermal expansion between glass and zirconia (ZrO2) from those stresses arising solely from the cooling process. Slow crack growth experimentes were undertaken to demonstrate how cracks grow in

Preparation, Mechanical Properties, and High-Temperature Wear Resistance of Ti-Al-B alloy.

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Ti-Al matrix alloy reinforced with a high content of boron was fabricated by using a high-temperature alloying method and powder metallurgy technique (P/M). The preparation method of Ti-Al-B alloying powder was put forward. Phases, microstructure, and mechanical properties of the alloys were

Attractive magnets for orthodontic extrusion of crown-root fractured teeth.

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A subgingival crown-root fracture presents the clinician with a difficult restorative problem, including reaching the fracture line, and is complicated by the need to maintain the periodontal tissues in good health. The treatment options up to now have usually been limited to extrusion of the

Visible light-triggered fluorescence and pH modulation using metastable-state photoacids and BODIPY.

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Small changes in the pH gradient play a critical role in numerous biological and chemical pathways. Systems capable of monitoring and regulating these changes with high sensitivity and minimum photo-fatigue are in demand. Herein, we propose a visible light-triggered molecular system that allows for

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