Renormalization of circle diffeomorphism sequences and markov sequences

We show a one-to-one correspondence between circle diffeomorphism sequences that are C^{ 1+n}-periodic points of renormalization and smooth Markov sequences.We thank the financial support of LIAAD–INESC TEC through program PEst, USP-UP project, Faculty of Sciences, University of Porto, Calouste Gulbenkian Foundation, FEDER and COMPETE Programmes, PTDC/MAT/121107/2010 and Fundação para a Ciência e a Tecnologia (FCT). J. P.Almeida acknowledges the FCT support given through Grant SFRH/PROTEC/49754/2009

Statistical-mechanical formulation of Lyapunov exponents

We show how the Lyapunov exponents of a dynamic system can in general be expressed in terms of the free energy of a (non-Hermitian) quantum many-body problem. This puts their study as a problem of statistical mechanics, whose intuitive concepts and techniques of approximation can hence be borrowed.Comment: 10 pages, 3 figures, RevTex

Potential Bioregulators for Rape (Brassica napus L.) Plants

It is known that polyphenols are a single group of phytochemicals which present in all plants. Their biological activity is based upon functional groups capable to participate in the plant metabolism influencing cell division and biosynthesis processes. In our experiments we have evaluated the effect of spruce bark polyphenolic extract and deuterium depleted water (DDW) as rapeseed plant bioregulators. After aqueous extraction of bark and quantification and identification of polyphenolic compounds by HPLC methods, we applied the extracts in the growth medium of rapeseed plants. Assessment the influence of extracts on rapeseed plants was achieved through determination of germination energy and capacity, biomass accumulation, assimilatory pigments accumulation and photosynthesis activity. The results has shown that it possible to establish the highest stimulating effect of polyphenols on germination energy and capacity. These, were registered in the presence of spruce bark polyphenolic extract (SBPE) with an equivalent content of 130 mg GAE/L. Rape plants treated with DDW+SBPE have accumulated the highest amount of biomass compared with other experimental variants. The photosynthesis activity was considerably intensified especially in the presence of SBPE

Survival trends and complications in surgical interventions for colorectal cancer: an overview of patients hospitalized in Clinical Emergency Hospital Bucharect

The preoperative imaging diagnosis of rectal cancer lies at the heart of oncological staging and has a crucial influence on patient management and therapy planning. Rectal cancer is common, and accurate preoperative staging of tumors using high-resolution magnetic resonance imaging (MRI) is a crucial part of modern multidisciplinary team management (MDT). Indeed, rectal MRI has the ability to accurately evaluate a number of important findings that maBay impact patient management, including distance of the tumor to the mesorectal fascia, presence of lymph nodes, presence of extramural vascular invasion (EMVI), and involvement of the anterior peritoneal reflection/peritoneum and the sphincter complex. Many of these findings are difficult to assess in nonexpert hands. In this lecture, we present currently used staging modalities with focus on MRI, including optimization of imaging techniques, tumor staging, interpretation help as well as essentials for reporting

Melphalan 140mg/m2 or 200mg/m2 for autologous transplantation in myeloma: results from the Collaboration to Collect Autologous Transplant Outcomes in Lymphoma and Myeloma (CALM) study. A report by the EBMT Chronic Malignancies Working Party

Melphalan at a dose of 200mg/m2 is standard conditioning prior to autologous haematopoietic stem cell transplantation for multiple myeloma, but a dose of 140mg/m2 is often used in clinical practice in patients perceived to be at risk of excess toxicity. To determine if melphalan 200 and melphalan 140 are equally effective and tolerable in clinically relevant patient subgroups we analysed 1964 first single autologous transplantation episodes using a series of Cox proportional-hazards models. Overall survival, progression-free survival, cumulative incidence of relapse, non-relapse mortality, haematopoietic recovery and second primary malignancy rates were not significantly different between the melphalan 140 (n=245) and melphalan 200 (n=1719) groups. Multivariable subgroup analysis showed that disease status at transplantation interacted with overall survival, progression-free survival, and cumulative incidence of relapse, with a significant advantage associated with melphalan 200 in patients transplanted in less than partial response (adjusted hazard ratios for melphalan 200 versus melphalan 140: 0.5, 0.54, and 0.56). In contrast, transplantation in very good partial or complete response significantly favoured melphalan 140 for overall survival (adjusted hazard ratio: 2.02). Age, renal function, prior proteasome inhibitor treatment, gender, or Karnofsky score did not interact with overall/progression-free survival or relapse rate in the melphalan dose groups. There were no significant survival or relapse rate differences between melphalan 200 and melphalan 140 patients with high-risk or standard-risk chromosomal abnormalities. In conclusion, remission status at the time of transplantation may favour melphalan 200 or melphalan 140 for key transplant outcomes (NCT01362972)

Sustainable metal-free carbogels as oxygen reduction electrocatalysts

crosscheck: This document is CrossCheck deposited related_data: Supplementary Information copyright_licence: The Royal Society of Chemistry has an exclusive publication licence for this journal history: Received 5 March 2017; Accepted 2 May 2017; Accepted Manuscript published 2 May 2017Kathrin Preuss would like to thank the Materials Research Institute of Queen Mary, University of London for a PhD studentship. Liviu C. Tănase and Cristian M. Teodorescu acknowledge funding from the UEFISCDI Agency through the Project PN-II-RU-TE-2014-4-0456 and by the NIMP Core Project PN16-48012, both projects being granted by the Romanian Ministry of Research and Innovation

Evaluarea eficacităţii şi toleranţei preparatului „Lovex” în tratamentul pacienţilor cu disfuncţie erectilă

Summary Lovex, sildenafil citrat 70 mg, Faramco, R. Moldova was prescribed to 30 patients with erectile dysfunction (ED) including 10 patients with Chronic Renal Failure on hemodialysis. The efficacy of the drug was appreciated according to the IIEF questionnaire. Lavex has shown a good efficacy on 80% of patients, comparable with 100mg of sildenafil but with minimal adverse events and could be recommended as an election treatment in patients ED. Introducere. Pentru tratamentul disfuncţiei erectile (DE) au fost propuse m ai m ulte substanţe farm aceutice, farm acoterapia orală reprezentând la ora actuală prima opţiune de tratament al pacienţilor cu disfuncţie erectilă. începând cu anul 1998 primul medicament prescris cu succes în tratamentul DE, indiferent de etiologie a fost sildenafilul citrat, inhibitor selectiv al enzimei fosfodiesteraza tip 5. Actualmente sildenafilul citrat este prezent pe piaţa farmaceutică sub mai multe denumiri comerciale. Scopul lucrării. Aprecierea profilului de eficienţă şi de toleranţă în tratamentul DE a preparatului „Lovex”, sildenafil citrat 70 mg, produs de compania farmaceutică „Farmaco”, Republica Moldova. Material şi metodă. Studiul a fost efectuat în cadrul Catedrei de Urologe şi Nefrologie Chirurgicală a USMF „Nicolae Testemiţanu” pe un lot de 30 pacienţi cu disfuncţie erectilă, inclusiv 20 pacienţi ambulatori şi 10 pacienţi cu Insuficienţă Renală Cronică (IRC), supuşi hemodializei în cadrul Centrului Republican de Hemodializă şi Transplant Renal. Vârsta pacienţilor a variat de la 21 la 68 ani. Pentru a aprecia prezenţa disfuncţiei erectile, a gradului de dificultate şi a eficacităţii tratamentului a fost utilizat chestionarul IIEF (Internaţional Index of Erectile Function), care permite evaluarea screening a funcţiilor sexuale, independent de particularităţile socio-culturale sau de moment ale pacientului. Durata tulburărilor de erecţie a variat de la 3 luni la 5 ani. Disfuncţia erectilă uşoară a fost diagnosticată la 8 pacienţi, moderată - la 15 şi severă - la 7. Preparatul „Lovex” a fost administrat o dată în zi, cu o oră înaintea actului sexual. Evaluarea tratamentului a fost efectuată la 1 lună de la iniţierea sa, prin completarea repetată a chestionarului IIEF, a fişierului de apreciere a toleranţei, iar pacienţii cu IRC au fost monitoriţai suplimentar prin aprecierea indicelor T/A şi a unor constante bioumorale. în perioada susnumită fiecare pacient a luat între 4 şi 8 comprimate de „Lovex”. Rezultate. Analiza chestionarelor IIEF, postterapie, a demonstrat prezenţa unor efecte terapeutice importante. Astfel la întrebările 3, 4 şi 5 care se referă la capacitatea de a ajunge şi a menţine erecţia pe durata raportului sexual, 24 (80%) pacienţi au remarcat o ameliorare evidentă a funcţiei erectile, 6 (20%) nu au observat nici o schimbare, 14(46%) au raportat 0 creştere a libidoului, 21(70%) - o creştere evidentă a satisfacţiei de viaţă, iar 19 (63%) - o reapariţie a încrederii în capacitatea de a avea şi a menţine o erecţie. Dintre pacienţii cu IRC aflaţi la dializă, îmbunătăţirea erecţiei a fost semnalată în 90% cazuri. Toleranţa preparatului a fost în general bună. Efectele adverse au fost minime şi s-au manifestat prin cefalee moderată - 3 (10%) pacienţi, dispepsie - 2 (6,6%) pacienţi, congestie nazală - 1 pacient (3,3%), creşterea valorilor T/A - 1 pacient (3,3%). Nu am semnalat suspendarea tratamentului din cauza efectelor adverse. Discuţii şi concluzii. În termeni de comparaţie potenţa şi selectivitatea unui inhibitor al fosfodiesterazei tip 5 este CI50, ceea ce reprezintă concentraţia minim necesară a inhibitorului pentru a reduce eficienţa enzimei la 50%. Pentru a atinge un nivel de inhibare a PDE-5 de 90%, este necesară o concentraţie liberă plasmatică de circa 25nM sildenafil. O doză unică de sildenafil citrat de 100 mg determină o concentraţie plasmatică de vârf de circa 38nM. Majoritatea efectelor adverse raportate în literatura de specialitate se referă la doza respectivă. Dozarea de 70 mg a preparatului „Lovex” permite atingerea unui nivel înalt de inhibiţie al PDE-5, nu însă şi a efectelor adverse, care în studiul nostru sunt comparabile cu valorile de 50 mg sildenafil citrat. Ameliorarea mai evidentă a erecţiei la pacienţii cu IRC se explică, probabil, prin atingerea unei concentraţii plasm atice mai mari a sildenafilului la atare categorie de pacienţi, afirmaţie care necesită însă studii suplimentare. În concluzie, preparatul „Lovex” sildenafil citrat 70 mg, produs de compania farmaceutică „Farmaco”, are o eficacitate remarcabilă în tratamentul pacienţilor cu disfuncţie erectilă, comparabilă cu dozele de sildenafil de 100mg, dar cu efecte adverse minime şi poate fi recomandat ca preparat de primă linie terapeutică