The working zone in the interpolar area of the Faraday balance: an approach to testing the magnetic force factor stability criterion

Due to rapid development of the scientific and applied research in magnetic control and magnetophoresis of ferro- and ferromagnetic disperse fraction of various technological, natural and industry-specific media, the Faraday method is again in high demand as it is mainly aimed at defining magnetic susceptibility of solid and heterogeneous samples of small volumes. Based on the appearing (and then measured) ponderomotive force impacting the sample, the method allows accurate determining of single particles magnetic susceptibility by using the data of the sample represented by a conglomerate of the particles of such a fraction. In addition, it is mentioned that to date there is still a great gap in the methodology of the Faraday method as there are no exact recommendations on choosing both the form of the polar pieces of the Faraday balance and the positioning of the sample (the location of the working zone) in the interpolar area. Owing to these drawbacks, the well-known and long-time used Faraday method cannot be considered substantiated to a satisfactory degree. Thus, in our point of view, the treatment of the results obtained earlier with the help of the method should be cautious. In our work, we experimentally defined and substantiated an approach to identifying a working (local) zone, viz. the zone with stable values of the magnetic force factor – the product of the field intensity and induction by its gradient. The approach features the relative phenomenological analysis and is exemplified by polar pieces of non-traditional spherical form. It has been demonstrated that in order to state the fact of mere existence of this zone (and its location) in the interpolar area, the coordinate (usually nonlinear one) characteristic of intensity or induction, which is obligatorily obtained in an experiment, should have an inflexion, which guarantees a functionally extreme view of the following coordinate characteristics both of the gradient and that of the force factor. We also established the coordinates and the length of the working zone in a specific interpolar area

PCSK9 Inhibitors in Clinical Practice: Experience of a Specialized Lipid Center

Aim. To characterize patients receiving PCSK9 inhibitors, and assess the efficiency of their treatment in a specialized lipid center.Material and methods. A retrospective analysis of the medical records of patients who visited the Lipid clinic of the National Medical Research Center for Therapy and Preventive Medicine (Moscow, Russia), receiving PCSK9 inhibitor and having lipid profile in dynamics, was carried out (n=77). Cardiovascular risk (CVR) and low-density lipoprotein cholesterol (LDL-C) target levels were evaluated in accordance with the Russian guidelines for the diagnostics and correction of dyslipidemias 2020.Results. Of 77 patients taking PCSK9 inhibitors (44.2% males, the median of age 56 [47; 66] years), the majority (64.0%) had a probable or definite familial hypercholesterolemia (FH). The proportion of other lipid metabolism disorders, pure hypercholesterolemia and combined hyperlipidemia was 21% and 15%. More than half of the patients (68.8%) had a very high CVR, mainly due to the presence of coronary heart disease (84.9%). The proportion of patients receiving PCSK9 inhibitors as monotherapy was 7.8%, in combination with high-intensity statin therapy – 33.8%, as part of triple lipid-lowering therapy (high-intensity statin, ezetimibe, PCSK9 inhibitors) – 50.6%. Addition of PCSK9 inhibitors to combined lipid-lowering therapy enabled to reduce the LDL-C level to 1.02 [0.62; 1.39] mmol/l with its total decrease from the baseline by 87.3%. While taking PCSK9 inhibitors, LDL-C <1.8 mmol/l and <1.4 mmol/l achieved at 78.3% and 57.7% FH patients with high and very high CVR, respectively. Among patients with other hyperlipidemias, 74.1% of patients with very high CVR was achieved the target LDL-C level <1.4 mmol/l.Conclusion: In a specialized lipid center, PCSK9 inhibitors are prescribed to patients with high or very high CVR, most of whom are FH patients. The effectiveness of the use of PCSK9 inhibitors in real-world practice is comparable to the results of clinical trials

Моделирование процесса нанесения покрытия на микросферы

The aim of this paper was to investigate the process of coating microspheres with Kollicoat MAE 100P film. In this study the influence of the main technological parameters of the coating process on the properties of coated microspheres was investigated. A mathematical model was developed using statistical methods of processing experimental data. This model allows calculating quantitatively the properties of coated microspheres on the basis of coating process parameters.Работа посвящена исследованию процесса нанесения пленочного покрытия Kollicoat MAE 100P на микросферы. В ходе данной работы исследовано влияние основных технологических параметров проведения процесса на характеристики покрытых микросфер. С помощью статистических методов обработки экспериментальных данных была получена математическая модель, позволяющая количественно определить свойства микросфер, исходя из технологических параметров процесса нанесения покрытия

Coulomb excitation of exotic nuclei at the R3B-LAND setup

Exotic Ni isotopes have been measured at the R3B-LAND setup at GSI in Darmstadt, using Coulomb excitation in inverse kinematics at beam energies around 500 MeV/u. As the experimental setup allows kinematically complete measurements, the excitation energy was reconstructed using the invariant mass method. The GDR and additional low-lying strength have been observed in 68Ni, the latter exhausting 4.1(1.9)% of the E1 energy-weighted sum rule. Also, the branching ratio for the non-statistical decay of the excited 68Ni nuclei was measured and amounts to 24(4)%.Comment: 11 pages, 7 figures. Invited Talk given at the 11th International Conference on Nucleus-Nucleus Collisions (NN2012), San Antonio, Texas, USA, May 27-June 1, 2012. To appear in the NN2012 Proceedings in Journal of Physics: Conference Series (JPCS

Аnalysis of clinical and morphological manifestations of septo-optical Dysplasia

The article presents data on the analysis of clinical and functional manifestations of septo-optical dysplasia in both the perinatal and postnatal periods, as well as the determination of factors affecting the occurrence of a congenital developmental disorder of the CNS both in isolation and in combination with other congenital malformations diagnosed in the Sverdlovsk region. The study includes 29 cases of septo-optical dysplasia, both in isolated form and in combination with other defects of the central nervous system, as well as in combination with defects of other internal organs. The diagnosis is based on the presence of a burdened obstetric and gynecological history, prenatal diagnosis, neuroimaging data - brain MRI, neurosonography. The article shows the clinical course and diagnostic symptoms, prenatal diagnosis of pregnant women, MRI and NSG-picture of the brain.В статье изложены данные анализа клинико-функциональных проявлений септо-оптической дисплазии, определение сроков выявления и факторов, влияющих на возникновение данного врожденного порока развития ЦНС. Исследование включает 29 случаев септо-оптической дисплазии диагностированных у пробандов в Свердловской области. диагноз основывается на результатах, полученных в ходе пренатальной эхографии и методов нейровизуализации, применяемых после рождения ребенка – МРТ головного мозга, нейросонографии. В статье показаны особенности клинического течения и диагностические симптомы, данные пренатальной диагностики беременных женщин, МРТ и ультразвуковая картина головного мозга

Оптимизация выявления и профилактики туберкулеза у больных ВИЧ-инфекцией

Tuberculosis incidence and HIV infection incidence in the regions of the Russian Federation are declining, but the proportion of HIV positive people among the entire cohort of tuberculosis patients is clearly growing.The objective: to determine causes for increasing proportion of HIV infected people among tuberculosis patients and to provide additional recommendations for enhancement of tuberculosis detection in HIV infected patients. as well as prevention of its transmission.Subjects and Methods. The cohort of new tuberculosis patients with concurrent HIV infection (TB/HIV coinfection) in the Russian Federation region with a high prevalence of HIV infection was studied based personal medical records of patients for the first 6 months of 2022 (682 cases totally).Results. The cohort of patients with TB/HIV co-infection belonged to socially vulnerable population. Among them, the parenteral route of HIV infection transmission still prevails, while in the whole country, among new HIV patients, the sexual (heterosexual) route of transmission already prevails. The majority of patients with TB/HIV co-infection, who had been infected with HIV for more than 5 years by the time tuberculosis was detected, were not registered with the Center for AIDS Prevention and Control and accordingly received no antiretroviral therapy. In most cases, HIV-infected patients sought medical care in general medical services when they developed symptoms of tuberculosis, however they referred for help when the disease was advanced. When assessing effectiveness of tuberculosis treatment, the specific parameters of tuberculosis course in HIV-infected patients with compromised immunity have not been taken into account.Показатели территориальной заболеваемости туберкулезом и заболеваемости ВИЧ-инфекцией в Российской Федерации снижаются, но доля лиц с ВИЧ-инфекцией среди всего контингента больных туберкулезом отчетливо растет.Цель исследования: определить причины увеличения доли лиц с ВИЧ-инфекцией среди больных туберкулезом и дать дополнительные рекомендации по оптимизации выявления туберкулеза у больных ВИЧ-инфекцией, а также по профилактике ограничения его распространения.Материалы и методы. Изучен контингент впервые выявленных больных туберкулезом, сочетанным с ВИЧ-инфекцией (ТБ-ВИЧ-и), в субъекте РФ с высокой распространенностью ВИЧ-инфекции по картам персонального учета больных за первые 6 месяцев 2022 года (всего 682 наблюдения).Результаты. Контингент больных ТБ-ВИЧ-и остается социально неблагополучным. Так, среди них все еще преобладает парентеральный путь заражения ВИЧ, при этом в стране среди впервые выявленных больных ВИЧ-инфекцией преобладает уже половой (гетеросексуальный) путь. Большинство пациентов ТБ-ВИЧ-и с давностью ВИЧ-инфекции более 5 лет к моменту выявления ТБ не состояли на диспансерном учете в «Центре по профилактике и борьбе со СПИД» и, соответственно, не получали антиретровирусную терапию. При симптомах заболевания туберкулезом за медицинской помощью в большинстве случаев больные ВИЧ-инфекцией обращались в учреждения общей лечебной сети несвоевременно. При оценке эффективности противотуберкулезной помощи не учитываются особенности течения туберкулеза у пациентов с ВИЧ-инфекцией в условиях иммунодефицита

Measurement of the 92,93,94,100Mo(γ,n) reactions by Coulomb Dissociation

The Coulomb Dissociation (CD) cross sections of the stable isotopes 92,94,100Mo and of the unstable isotope 93Mo were measured at the LAND/R3B setup at GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany. Experimental data on these isotopes may help to explain the problem of the underproduction of 92,94Mo and 96,98Ru in the models of p-process nucleosynthesis. The CD cross sections obtained for the stable Mo isotopes are in good agreement with experiments performed with real photons, thus validating the method of Coulomb Dissociation. The result for the reaction 93Mo(γ,n) is especially important since the corresponding cross section has not been measured before. A preliminary integral Coulomb Dissociation cross section of the 94Mo(γ,n) reaction is presented. Further analysis will complete the experimental database for the (γ,n) production chain of the p-isotopes of molybdenum