Field-asymmetric transverse magnetoresistance in a nonmagnetic quantum-size structure

A new phenomenon is observed experimentally in a heavily doped asymmetric quantum-size structure in a magnetic field parallel to the quantum-well layers - a transverse magnetoresistance which is asymmetric in the field (there can even be a change in sign) and is observed in the case that the structure has a built-in lateral electric field. A model of the effect is proposed. The observed asymmetry of the magnetoresistance is attributed to an additional current contribution that arises under nonequilibrium conditions and that is linear in the gradient of the electrochemical potential and proportional to the parameter characterizing the asymmetry of the spectrum with respect to the quasimomentum.Comment: 10 pages, 5 figures. For correspondence, mail to [email protected]

Self-Channelling of Electric Current in a Quantum Well

We have directly demonstrated that homogeneous photoexcitation of a quantum well in presence of uniform tilted magnetic field gives rise to a set of bypass in-plane electric currents of a different value which may flow even in the opposite directions simultaneously. The effect has been observed in an asymmetric InAs quantum well under the Landau quantization. Theoretical model of the effect are discussed as well as the related problems.Comment: 9 pages, 7 figure

STAGES OF DEVELOPMENT OF THE ACCESS OF NEW MEDICATIONS AND HEALTH TECHNOLOGIES

The reimbursement system for drugs and medical devices is a significant factor that defines their accessibility and affordability. Due to increasing prices in healthcare worldwide, the last decades are characterized by the infusion of innovative approaches to cost-containment in healthcare and by the restriction of the ineffective or insufficiently effective technologies utilization. The requirements for including new drugs and medical devices into reimbursement lists have increased. Evidence of cost-effectiveness and budget impact of new technologies is more and more often required when dossier for health technology assessment (HTA) is submitted. The history of approaches and requirements to clinical and economical analysis from the regulatory authorities’ point of view are considered in the article. Key words: reimbursement system for drugs and medical devices, restrictive lists, effectiveness of medical technologies, appraisal of new technologies, budget impact analysis, HTA dossier. (Pediatric pharmacology. — 2011; 8 (6): 6–10)

Принципы импортозамещения лекарственных препаратов

This articles is devoted to major principles of import substitution regarding drugs within the scope of restriction lists at various levels of the health care system. The article reviews the methodology of import substitution of drugs represented as a systematic and consistent process aimed at reduction or termination of import of medical and drug products by its substitution with similar domestic products at the domestic market of the country.Данная статья посвящена основным принципам импортозамещения лекарственных препаратов в рамках ограничительных перечней на различных уровнях системы здравоохранения. В статье рассматривается методология проведения импортозамещения лекарственных препаратов, представленная как системный и последовательный процесс, направленный на сокращение или прекращение импорта медицинской и лекарственной продукции путем ее замещения на внутреннем рынке страны аналогичной отечественной

Обзор международной практики использования механизма разделения затрат в национальных системах здравоохранения

The article gives a review of international experience of using of cost-sharing mechanism to prevent the risk of patient’s moral hazard. Theoretical background and types of cost-sharing, protection mechanisms for vulnerable social groups, national cost-sharing models are considered.В статье проводится обзор международного опыта использования механизма разделения затрат в целях предотвращения риска недобросовестного поведения потребителя медицинских услуг. Рассмотрены теоретические предпосылки и формы участия пациента в оплате, методы защиты уязвимых категорий населения, примеры национальных моделей разделения затрат