A new ab initio potential energy surface for the collisional excitation of N2H(+) by H2

10 pags.; 14 figs.© 2015 AIP Publishing LLC. We compute a new potential energy surface (PES) for the study of the inelastic collisions between N2H+ and H2 molecules. A preliminary study of the reactivity of N2H+ with H2 shows that neglecting reactive channels in collisional excitation studies is certainly valid at low temperatures. The four dimensional (4D) N2H+–H2 PES is obtained from electronic structure calculations using the coupled cluster with single, double, and perturbative triple excitation level of theory. The atoms are described by the augmented correlation consistent triple zeta basis set. Both molecules were treated as rigid rotors. The potential energy surface exhibits a well depth of ≃2530 cm−1. Considering this very deep well, it appears that converged scattering calculations that take into account the rotational structure of both N2H+ and H2 should be very difficult to carry out. To overcome this difficulty, the “adiabatic-hindered-rotor” treatment, which allows para-H2(j = 0) to be treated as if it were spherical, was used in order to reduce the scattering calculations to a 2D problem. The validity of this approach is checked and we find that cross sections and rate coefficients computed from the adiabatic reduced surface are in very good agreement with the full 4D calculationsThis research was supported by the CNRS national program “Physique et Chimie du Milieu Interstellaire.” F.L. and Y.K. also thank the Agence Nationale de la Recherche (ANR-HYDRIDES), contract No. ANR-12-BS05-0011-01. We acknowledge Laurent Pagani for stimulating this work.Peer Reviewe

Molecular excitation in the Interstellar Medium: recent advances in collisional, radiative and chemical processes

We review the different excitation processes in the interstellar mediumComment: Accepted in Chem. Re

РОЛЬ ГЕРПЕСВИРУСНЫХ ИНФЕКЦИЙ ПРИ ДЛИТЕЛЬНЫХ СУБФЕБРИЛИТЕТАХ У ДЕТЕЙ

127 children with long subfebrile have been eхamined. The causative role of active herpes virus infection in the etiology of long subfebrile states in children has been proved in 36,7% of cases. The frequency of detection of acute (6,3%), reactivaited (30,4%) and latend (63,3%) forms of herpes virus infections in children with long subfebrile conditions has been demonstrated. Prevalence of mixed forms (78%) over mono-infection (22%) in the etiological structure of the active herpes virus has been revealed.Обследовано 127 детей с длительным субфебрилитетом. В 36,7% случаев была доказана роль активной герпесвирусной (ГИ) в этиологии длительных субфебрилитетов у детей. Показана частота выявления острых ГИ (6,3%), реактивированных (30,4%) и латентных (63,3%) форм ГИ у детей с длительным субфебрилитетом. В этиологической структуре активной ГИ выявлено преобладание смешанных форм (78%) над моно инфекцией (22%)

СЛУЧАЙ УСПЕШНОГО ХИРУРГИЧЕСКОГО ЛЕЧЕНИЯ ТРОМБОЭМБОЛИИ ЛЕГОЧНОЙ АРТЕРИИ У БОЛЬНОЙ НА СРОКЕ БЕРЕМЕННОСТИ 11 НЕДЕЛЬ

Pulmonary embolism in pregnant women is fairly common complication, and it remains to be the one of major causes of maternal mortality in the number of countries. The need to compare risks of the mother and child makes the search for optimal treatment tactics very complicated in this specific case. The experience of the last decades provides evidences for choosing aggressive treatment tactics, accurate diagnostics and early surgical intervention. The authors of this article describe the clinical case of successful treatment of the young woman whose pregnancy course was complicated by pulmonary embolism at the 11th week of gestation. The article describes the results of laboratory and instrumental diagnostics and anasthesiological support technique within available scope of pharmacological and technical means. Also the article reviews the literature data on this problem. The conclusion contains recommendations for intra-operative management of such patients. Тромбоэмболия легочной артерии (ТЭЛА) у беременных женщин является весьма частым осложнением, она остается одной из ведущих причин материнской смертности в ряде стран. Необходимость соотнесения рисков для организма матери и ребенка делает поиск оптимальной тактики лечения в данном случае очень сложной задачей. Опыт последних десятилетий свидетельствует в пользу избрания агрессивной тактики лечения, точной диагностики и раннего оперативного вмешательства. В данной статье авторы представляют случай успешного лечения молодой женщины, течение беременности которой осложнилось ТЭЛА на сроке гестации 11 недель. Описываются результаты проведенной лабораторной и инструментальной диагностики, а также методика анестезиологического пособия в рамках доступного объема фармакологических и технических средств. Приводится анализ данных литературы по этой актуальной проблеме. В заключении даны рекомендации по интраоперационному ведению подобных больных.

International multicenter survey on screening and confirmatory testing in primary aldosteronism

Objective: Primary aldosteronism (PA) is one of the most frequent causes of secondary hypertension. Although clinical practice guidelines recommend a diagnostic process, details of the steps remain incompletely standardized. Design: In the present SCOT-PA survey, we have investigated the diversity of approaches utilized for each diagnostic step in different expert centers through a survey using Google questionnaires. A total of 33 centers from 3 continents participated. Results: We demonstrated a prominent diversity in the conditions of blood sampling, assay methods for aldosterone and renin, and the methods and diagnostic cutoff for screening and confirmatory tests. The most standard measures were modification of antihypertensive medication and sitting posture for blood sampling, measurement of plasma aldosterone concentration (PAC) and active renin concentration by chemiluminescence enzyme immunoassay, a combination of aldosterone-to-renin ratio with PAC as an index for screening, and saline infusion test in a seated position for confirmatory testing. The cutoff values for screening and confirmatory testing showed significant variation among centers. Conclusions: Diversity of the diagnostic steps may lead to an inconsistent diagnosis of PA among centers and limit comparison of evidence for PA between different centers. We expect the impact of this diversity to be most prominent in patients with mild PA. The survey raises 2 issues: the need for standardization of the diagnostic process and revisiting the concept of mild PA. Further standardization of the diagnostic process/criteria will improve the quality of evidence and management of patients with PA.Metabolic health: pathophysiological trajectories and therap

ЛАБОРАТОРНАЯ ДИАГНОСТИКА ОППОРТУНИСТИЧЕСКИХ ИНФЕКЦИЙ ПРИ ДЛИТЕЛЬНЫХ СУБФЕБРИЛИТЕТАХ И ОБСТРУКТИВНЫХ БРОНХИТАХ У ДЕТЕЙ ПРИ МИКСТ ИНФЕКЦИЯХ

The article discusses the role of agents of opportunistic infections (OI) in the etiology of children’s infectious diseases illustrated by the long-subfebrilites and obstructivebronchitis. When children without expressed immunity disorders are infected with mixed infections OI have more pronounced manifestations, which requires appropriate treatment. At the same time, the similarity of the clinical manifestations does not mean that an etiological diagnosis can be determined without laboratory diagnostic methods. The importance of routine pediatrics monitoring of children with latent forms of OI is emphasized.Показана роль возбудителей оппортунистических инфекций (ОИ) в этиологии инфекционных заболеваний детей на примере длительных субфебрилитетов и обструктивных бронхитов. У детей без выраженных нарушений иммунитета при смешанном инфицировании ОИ протекают более манифестно, что требует назначения соответствующего лечения. В то же время схожесть клинических проявлений не позволяет установить этиологический диагноз заболевания без использования лабораторных методов диагностики. Показана необходимость систематического наблюдения педиатрами за детьми с латентными формами ОИ

Changes to the Fossil Record of Insects through Fifteen Years of Discovery

The first and last occurrences of hexapod families in the fossil record are compiled from publications up to end-2009. The major features of these data are compared with those of previous datasets (1993 and 1994). About a third of families (>400) are new to the fossil record since 1994, over half of the earlier, existing families have experienced changes in their known stratigraphic range and only about ten percent have unchanged ranges. Despite these significant additions to knowledge, the broad pattern of described richness through time remains similar, with described richness increasing steadily through geological history and a shift in dominant taxa, from Palaeoptera and Polyneoptera to Paraneoptera and Holometabola, after the Palaeozoic. However, after detrending, described richness is not well correlated with the earlier datasets, indicating significant changes in shorter-term patterns. There is reduced Palaeozoic richness, peaking at a different time, and a less pronounced Permian decline. A pronounced Triassic peak and decline is shown, and the plateau from the mid Early Cretaceous to the end of the period remains, albeit at substantially higher richness compared to earlier datasets. Origination and extinction rates are broadly similar to before, with a broad decline in both through time but episodic peaks, including end-Permian turnover. Origination more consistently exceeds extinction compared to previous datasets and exceptions are mainly in the Palaeozoic. These changes suggest that some inferences about causal mechanisms in insect macroevolution are likely to differ as well

New insights on the HCl abundance in the interstellar medium

International audienc

THE ROLE OF HERPES INFECTIONS IN PROLONGED SUBFEBRILE FEVER IN CHILDREN

127 children with long subfebrile have been eхamined. The causative role of active herpes virus infection in the etiology of long subfebrile states in children has been proved in 36,7% of cases. The frequency of detection of acute (6,3%), reactivaited (30,4%) and latend (63,3%) forms of herpes virus infections in children with long subfebrile conditions has been demonstrated. Prevalence of mixed forms (78%) over mono-infection (22%) in the etiological structure of the active herpes virus has been revealed