Комплексный подход к выбору метода борьбы с гидратообразованием на Заполярном нефтегазоконденсатном месторождении (ЯНАО)

В бакалаврской работе изучены способы образования газовых гидратов. Проанализированы основные методы борьбы с гидратами в газопромысловых и газотранспортных системах. Приведена методика расчета количества ингибитора, необходимого для предупреждения гидратообразования для сеноманского газа.In the bachelor's work, methods for the formation of gas hydrates are studied. The main methods of combating hydrates in gas production and gas transmission systems are analyzed. A method for calculating the amount of inhibitor required to prevent hydrate formation for Cenomanian gas is presented

Исследования алгоритмов фазочастотного прослеживания сейсмических волн с равновесной и неравновесной обработкой

Создание эффективных алгоритмов фазочастотного прослеживания сейсмических волн с равновесной и неравновесной обработкой. Исследование их помехоустойчивости и разрешающей способности.Creation of efficient algorithms for phase-tracking of seismic waves with equilibrium and non-equilibrium processing. The study of their noise immunity and resolution

Misericordia regia, es decir, negociemos. Alfonso VII y los Lara en la 'Chronica Adefonsi imperatoris'

[ES] Los discursos surgidos por inspiración -cuando no directa agencia- del poder regio son hegemónicos entre las fuentes narrativas del medievo castellano-leonés. Quizás por ello, suelen abundar en estos textos visiones de las relaciones entre monarquía y nobleza concebidas como polos opuestos en una dinámica recurrente de enfrentamiento-consenso: la monarquía aglutinadora de las aspiraciones colectivas de una comunidad, frente a unos nobles egoístas por naturaleza, que depredan los recursos de aquélla en beneficio propio, y que deben ser canalizados hacia el servicio al bien común. Lejos de limitarse a la época medieval, esta forma de entender las dinámicas políticas medievales constituye una tradición vetusta, originada en el propio medievo, reiterada hasta la saciedad en la época moderna, y que goza aún hoy de buena salud y sigue produciendo retoños de manera continuada, con toda su carga legitimadora de la genealogía del poder del presente. En este trabajo se analiza un ejemplo concreto del siglo XII -el conflicto entre Alfonso VII y los Lara- para mostrar como la retórica del perdón/castigo regios puede estar ocultando la necesidad práctica de negociar las relaciones de fuerza entre Monarquía y Nobleza.Peer reviewe

О распределении свинца и хрома в угле основных рабочих пластов Алмазно-Марьевского геолого-промышленного района

Рассмотрены особенности распределения Pb та Cr в угольных пластах Алмазно- Марьевского геолого-промышленного района. Установлен характер распределения, выполнен расчет средневзвешенных концентраций в углях основных пластов и свит, выявлен состав типоморфной геохимической ассоциации Co и V с другими токсичными и потенциальными элементами в углях района. Исследования распределения свинца и хрома в углях основных рабочих пластов Алмазн

Brief inhalation of nitric oxide increases resuscitation success and improves 7-day-survival after cardiac arrest in rats: a randomized controlled animal study

Introduction: Inhaled nitric oxide (iNO) improves outcomes when given post systemic ischemia/reperfusion injury. iNO given during cardiopulmonary resuscitation (CPR) may therefore improve return of spontaneous circulation (ROSC) rates and functional outcome after cardiac arrest (CA). Methods: Thirty male Sprague-Dawley rats were subjected to 10 minutes of CA and at least 3 minutes of CPR. Animals were randomized to receive either 0 (n = 10, Control), 20 (n = 10, 20 ppm), or 40 (n = 10, 40 ppm) ppm iNO during CPR until 30 minutes after ROSC. A neurological deficit score was assessed daily for seven days following the experiment. On day 7, brains, hearts, and blood were sampled for histological and biochemical evaluation. Results: During CPR, 20 ppm iNO significantly increased diastolic arterial pressure (Control: 57 ± 5.04 mmHg; 20 ppm: 71.57 ± 57.3 mmHg, p < 0.046) and decreased time to ROSC (Control: 842 ± 21 s; 20 ppm: 792 ± 5 s, (p = 0.02)). Thirty minutes following ROSC, 20 ppm iNO resulted in an increase in mean arterial pressure (Control: 83 ± 4 mmHg; 20 ppm: 98 ± 4 mmHg, p = 0.035), a less pronounced rise in lactate and inflammatory cytokine levels, and attenuated cardiac damage. Inhalation of NO at 20 ppm improved neurological outcomes in rats 2 to 7 days after CA and CPR. This translated into increases in 7 day survival (Control: 4; 20 ppm: 10; 40 ppm 6, (p ≤ 0.05 20 ppm vs Control and 40 ppm). Conclusions: Our study revealed that breathing NO during CPR markedly improved resuscitation success, 7-day neurological outcomes and survival in a rat model of VF-induced cardiac arrest and CPR. These results support the beneficial effects of NO inhalation after cardiac arrest and CPR

Use of gaming and simulation‐design technology in the formation of the readiness would‐be teachers of geography for specialized education of senior pupils

 В статті здійснено аналіз використання імітаційноігрових і проектних технологій у процесі професійнопедагогічної підготовки майбутніх учителів географії. Виявлено можливості та з’ясовано вплив означених технологій на процес формування готовності майбутніх учителів географії до профільного навчання старшокласників

Die Wirkung moderater Hypothermie auf Kontraktilität und calciuminduzierte Inotropie von humanem atrialen Myokard

In this study we examined the influence of induced moderate hypothermia on human atrial and rabbit ventricular myocardium. We measured contraction force, time relationship and its reaction to different positive inotropic agents such as calcium, isoproterenol and the phosphodiesterase inhibitor milrinone. Temperatures ranged between 37° C and 31°C. Human atrial muscle stripes were obtained from patients in sinus rhythm undergoing elective open heart surgery after receiving informed consent.Embedded in 2ml bath solution, the tissue stripes were stimulated at 20% above threshold at a temperature of 37°C. After reaching a steady state the temperature was reduced degree by degree until the target temperature was reached. Following the different setups, the muscles were then exposed to the different inotropic agents at a chosen temperature. Dose ot effect- relations were established. Maximum force of contraction (F), time to peak tension (TPT), time to 50% of contraction (Tsys50) and time to 50% relaxation (Tdia50) were continuously measured during this time. In atrial tissue the exerted hypothermia leads to a negative inotropic effect, adversely to the observed positive inotropic effect in ventricular tissue. Both tissue types showed a prolongation in contraction times as well as in relaxation process. Raising the extracellular calcium content, known for a strong positive inotropic effect under normothermia, only exerted a minimal inotropic change under hypothermia in both tissue types. The observed negative inotropic effect of hypothermia on human atrial myocardium differs from results found in previous studies on atrial tissue from other species. Different mechanisms in calcium-handling could provide an explanation, though a multifactorial cause seems to be more realistic