Optical Reflection Studies of Damage in Ion Implanted Silicon

Optical (3–6.5 eV) reflection spectra are presented for crystalline Si implanted at room temperature with 40 keV Sb ions to doses of less than 2×10^15/cm^2. These spectra, and their deviation from the reflection spectrum of crystalline Si, are discussed in terms of a model based on the average dielectric properties of the implanted region. For samples having a high ion dose (>10^15/cm^2) the observed spectra resemble the spectra of sputtered Si films. Anneal characteristics of the reflection spectra are found to be dose dependent. These observations are compared to, and found to substantiate, the results of other experimental techniques for studying lattice damage in Si

Динамика энергоструктурной активности при ингаляционной анестезии

Цель. Улучшение результатов лечения больных путем придания периоперационному обеспечению ингаляционной анестезии севофлураном энергопротективной направленности. Материалы и методы. У пациентов с острой патологией органов брюшной полости проведен аудит энергоструктурной активности во время ингаляционной анестезии севофлураном. В группе сравнения использовали общепринятый протокол, в основной – с применением органопротективных технологий. Определяли клинические индексы опасности (КИО), безопасности (КИБ), кардиальный резерв (КР), микроциркуляторно–митохондриальную недостаточность (ММН), концентрацию в крови нейроглиального белка (S100) и нейронспецифической энолазы (NSE). Результаты. Ингаляционная анестезия севофлураном нарушает энергоструктурные взаимодействия (ЭСВ) в массе клеток тела (МКТ). Энергопротективные технологии снижают степень повреждения, о чем свидетельствовала концентрация в крови S100 и NSE. Выводы. Применение энергопротективных технологий в соответствии с категориями энергоструктурной активности в МКТ позволяет улучшить результаты лечения пациентов с острой патологией брюшной полости и персонифицировать анестезиологическое обеспечение. Выявлена и доказана тесная корреляционная связь между ранними проявлениями структурных микроповреждений клеток головного мозга с энергоструктурными изменениями в МКТ пациентов

Management of a Female Patient with Irritable Bowel Syndrome and Somatoform Disorder

Aim: to demonstrate the management of a patient with somatization disorder and irritable bowel syndrome.Key points. A 41-yo female patient was admitted with complains of spastic lower abdomen pain, hard stool once every 1–2 days under laxative treatment (macrogol), bloating, anxiety, waiting for confirmation of a life threatening illness, internal stress, difficulty in falling asleep, shallow sleep. Has a long history of disease, characterized by the appearance of a variety of somatic symptoms (headache, tachycardia, joint pain, stool disorders, abdominal pain, etc.) during periods of emotional tension, lack of data suggesting organic disease. No abnormal changes were detected in examination at the clinic (complete blood count, serum chemistry tests, urinalysis or fecal tests, hydrogen and methane breath tests with lactulose, abdominal ultrasound, esophagogastroduodenoscopy, colonoscopy). With the prior agreement of patient, she was consulted by a psychiatrist and diagnosed with somatization disorder and mild anxiety disorder. On discharge from hospital recommended cognitive-behavioral therapy, continue taking macrogol, as well as treatment with Kolofort. After 3 months of complex treatment, there was a significant decrease in the severity of both the symptoms of irritable bowel syndrome and anxiety disorder.Conclusion. For patients whose complaints meet the diagnostic criteria for IBS, a two-stage differential diagnosis may be justified: at the first stage, differentiation of IBS and organic diseases of the gastrointestinal tract is carried out; at the second stage - IBS and somatization disorder. Kolofort can be the drug of choice both in patients with IBS and the pharmacological part of therapy in patients with somatization disorder

Two dimensional fermions in three dimensional YM

Dirac fermions in the fundamental representation of SU(N) live on the surface of a cylinder embedded in $R^3$ and interact with a three dimensional SU(N) Yang Mills vector potential preserving a global chiral symmetry at finite $N$. As the circumference of the cylinder is varied from small to large, the chiral symmetry gets spontaneously broken in the infinite $N$ limit at a typical bulk scale. Replacing three dimensional YM by four dimensional YM introduces non-trivial renormalization effects.Comment: 21 pages, 7 figures, 5 table

Integral geometry of complex space forms

We show how Alesker's theory of valuations on manifolds gives rise to an algebraic picture of the integral geometry of any Riemannian isotropic space. We then apply this method to give a thorough account of the integral geometry of the complex space forms, i.e. complex projective space, complex hyperbolic space and complex euclidean space. In particular, we compute the family of kinematic formulas for invariant valuations and invariant curvature measures in these spaces. In addition to new and more efficient framings of the tube formulas of Gray and the kinematic formulas of Shifrin, this approach yields a new formula expressing the volumes of the tubes about a totally real submanifold in terms of its intrinsic Riemannian structure. We also show by direct calculation that the Lipschitz-Killing valuations stabilize the subspace of invariant angular curvature measures, suggesting the possibility that a similar phenomenon holds for all Riemannian manifolds. We conclude with a number of open questions and conjectures.Comment: 68 pages; minor change

The Effectiveness of Add-on Treatment with Nutraceutical

Aim: evaluation of the effectiveness of the nutraceutical “Standard Zdorovia: Gastro” (“SZ Gastro”) in the treatment of patients with irritable bowel syndrome (IBS).Materials and methods. 52 patients (62 % women) diagnosed with IBS and IBS in combination with functional dyspepsia (FD) were included in the study and divided into two groups. Both groups received basic therapy according to the guidelines. The experimental group received as add-on the nutraceutical “SZ Gastro” (containing a standardized amount of menthol, gingerol and D-limonene); patients in the control group — placebo. The duration of the study was 30 days. The severity of somatic symptoms was assessed with the 7×7 questionnaire. Emotional state was assessed with the Four Dimensional Distress, Depression, Anxiety, and Somatization Questionnaire (4DSQ).Results. Patients of the experimental and control groups did not differ from each other either in terms of demographics, basic treatment, or in the severity of symptoms at the beginning of the study.The effectiveness of the treatment in the patients, who received add-on “SZ Gastro” was significantly higher than in the patients of the control group: in the control group the percentage of improvement of somatic symptoms was 22.35 %, in the experimental group it amounted to 49.18 % (χ2 = 15.9; p = 0.0001). The percentage of patients with significant decrease of emotional disturbances was also higher in the experimental group: distress (χ2 = 18.7; p = 0.0000), anxiety (χ2 = 6.9; p = 0.0097) and somatization (χ2 = 14.99; p = 0.0001). No significant side effects were registered in any of the groups.Conclusions. Add-on of nutraceutical “SZ Gastro” to basic treatment is safe and significantly increases effectiveness of the therapy in the patients with IBS and IBS in combination with PD

Filamins Regulate Cell Spreading and Initiation of Cell Migration

Mammalian filamins (FLNs) are a family of three large actin-binding proteins. FLNa, the founding member of the family, was implicated in migration by cell biological analyses and the identification of FLNA mutations in the neuronal migration disorder periventricular heterotopia. However, recent knockout studies have questioned the relevance of FLNa to cell migration. Here we have used shRNA-mediated knockdown of FLNa, FLNb or FLNa and FLNb, or, alternatively, acute proteasomal degradation of all three FLNs, to generate FLN-deficient cells and assess their ability to migrate. We report that loss of FLNa or FLNb has little effect on migration but that knockdown of FLNa and FLNb, or proteolysis of all three FLNs, impairs migration. The observed defect is primarily a deficiency in initiation of motility rather than a problem with maintenance of locomotion speed. FLN-deficient cells are also impaired in spreading. Re-expression of full length FLNa, but not re-expression of a mutated FLNa lacking immunoglobulin domains 19 to 21, reverts both the spreading and the inhibition of initiation of migration

Критерии лабораторной диагностики нозокомиального менингита у пациентов отделения реанимации и интенсивной терапии. Опыт пятилетнего проспективного наблюдения

Introduction. Nosocomial meningitis (NM) is one of the leading complications in neurosurgery due to high mortality and disability rates.Objective. The study was aimed to determine the reference values of laboratory parameters to diagnose NM in neurosurgical patients in the intensive care unit (ICU).Results. The incidence of NM in neurosurgical patients in ICU was 8.4 (95% CI 6.8–10. 0) per 100 patients. The dominant microbial agents of NM were coagulase-negative staphylococci, A. baumannii, and K. pneumoniae. We revealed the increase in leukocytosis, C-reactive protein, and blood procalcitonin in patients with infectious complications of other systems, regardless of NM presence. Episodes of hyponatremia and an increase in body temperature ≥ 38.0 occurred signifcantly more often in patients with NM. Changes in cerebrospinal fluid (CSF) cytosis, glucose, lactate, and the CSF/blood glucose ratio can serve as reliable criteria in the NM diagnosis.Conclusions. The diagnosis of NM is most likely when the increase in CSF cytosis > 65 cells/μL, CSF lactate > 4.2 mmol/L is observed, the decrease in the CSF glucose < 2.6 mmol, and CSF/blood glucose ratio < 0.45 is found.Нозокомиальный менингит (НМ) является одной из ведущих проблем в нейрохирургии в связи с высоким уровнем летальности и инвалидизации.Цель: определить референсные значения лабораторных показателей в диагностике НМ у нейрохирургических пациентов в отделении реанимации и интенсивной терапии (ОРИТ).Результаты. Частота развития НМ у нейрохирургических пациентов в ОРИТ составила 8,4 (95%-ный ДИ 6,8‒10,0) на 100 больных. Доминирующими возбудителями НМ являлись: коагулазонегативные стафилококки, A. baumannii и K. Pneumoniae. Оценка лейкоцитоза, С-реактивного белка и прокальцитонина в крови выявила повышение их уровня у пациентов с инфекционными осложнениями других систем независимо от наличия НМ. Эпизоды гипонатриемии и повышения температуры тела ≥ 38,0°С встречались статистически значимо чаще у пациентов с НМ. Изменения цитоза ликвора, концентраций глюкозы в ликворе, лактата в ликворе, а также соотношения концентраций глюкозы в ликворе к глюкозе в крови (коэффициента CSF/SGlu) могут служить достоверными критериями в диагностике НМ.Выводы. Диагноз НМ наиболее вероятен: при повышении цитоза ликвора > 65 клеток в 1 мкл, лактата в ликворе > 4,2 ммоль/л; снижении концентрации глюкозы в ликворе < 2,6 ммоль/л, коэффициента CSF/SGlu < 0,45