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https://www.readbyqxmd.com/read/29327756/isomeric-and-hybrid-ferrocenyl-cyrhetrenyl-aldimines-a-new-family-of-multifunctional-compounds
#1
Juan Oyarzo, Alejandra Acuña, Hugo Klahn, Rodrigo Arancibia, Carlos P Silva, Ramón Bosque, Concepción López, Mercè Font-Bardía, Carme Calvis, Ramón Messeguer
The synthesis and characterization of two novel and isomeric hybrid ferrocenyl/cyrhetrenyl aldimines [(η5-C5H5)Fe{(η5-C5H4)-CH[double bond, length as m-dash]N-(η5-C5H4)}Re(CO)3] (1) and [(η5-C5H5)Fe{(η5-C5H4)-N[double bond, length as m-dash]CH-(η5-C5H4)}Re(CO)3] (2) are reported. Their X-ray crystal structures reveal that both adopt the E form. However, molecules of 1 and 2 differ in the relative arrangement of the "Fe(η5-C5H5)" and "Re(CO)3" units (anti in 1 and syn in 2). This affects the type of intermolecular interactions, the assembly of the molecules and therefore their crystal architecture...
January 12, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29327191/iron-impregnated-zeolite-catalyst-for-efficient-removal-of-micropollutants-at-very-low-concentration-from-meurthe-river
#2
Hawraa Ayoub, Thibault Roques-Carmes, Olivier Potier, Bachar Koubaissy, Steve Pontvianne, Audrey Lenouvel, Cédric Guignard, Emmanuel Mousset, Hélène Poirot, Joumana Toufaily, Tayssir Hamieh
In this paper, for the first time, faujasite Y zeolite impregnated with iron (III) was employed as a catalyst to remove a real cocktail of micropollutants inside real water samples from the Meurthe river by the means of the heterogeneous photo-Fenton process. The catalyst was prepared by the wet impregnation method using iron (III) nitrate nonahydrate as iron precursor. First, an optimization of the process parameters was conducted using phenol as model macro-pollutant. The hydrogen peroxide concentration, the light wavelength (UV and visible) and intensity, the iron loading immobilized, as well as the pH of the solution were investigated...
January 11, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29320422/feasibility-of-detecting-natural-frequencies-of-hydraulic-turbines-while-in-operation-using-strain-gauges
#3
David Valentín, Alexandre Presas, Matias Bossio, Mònica Egusquiza, Eduard Egusquiza, Carme Valero
Nowadays, hydropower plays an essential role in the energy market. Due to their fast response and regulation capacity, hydraulic turbines operate at off-design conditions with a high number of starts and stops. In this situation, dynamic loads and stresses over the structure are high, registering some failures over time, especially in the runner. Therefore, it is important to know the dynamic response of the runner while in operation, i.e., the natural frequencies, damping and mode shapes, in order to avoid resonance and fatigue problems...
January 10, 2018: Sensors
https://www.readbyqxmd.com/read/29313698/cystic-pancreatic-neuroendocrine-tumor-pancreatic-endocrine-or-neuroendocrine-tumor-endoscopic-ultrasonography
#4
Modesto J Varas, Carme Loras, Agustí Balboa
Cystic pancreatic neuroendocrine tumors (cPNETs) represent less than 8% of all pancreatic cysts and approximately 13% of pancreatic endocrine tumors (PNETs). According to a recent review, the percentage of non-functional (NF) PNETs is 85% and 44.6% are incidentalomas. In our series of 75 PNET cases, ten cPNET cases (13%) were identified which are discussed and summarized below.
January 9, 2018: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/29308000/rate-of-adverse-events-of-gastroduodenal-snare-polypectomy-for-non-flat-polyp-is-low-a-prospective-and-multicenter-study
#5
Henry Córdova, Lidia Argüello, Carme Loras, Antonio Naranjo Rodríguez, Faust Riu Pons, Joan B Gornals, David Nicolás-Pérez, Xavier Andújar Murcia, Luis Hernández, Santos Santolaria, Carles Leal, Carles Pons, Enrique Pérez-Cuadrado-Robles, Orlando García-Bosch, Michel Papo Berger, José Luis Ulla Rocha, Cristina Sánchez-Montes, Gloria Fernández-Esparrach
AIM: To evaluate the rate of adverse events (AEs) during consecutive gastric and duodenal polypectomies in several Spanish centers. METHODS: Polypectomies of protruded gastric or duodenal polyps ≥ 5 mm using hot snare were prospectively included. Prophylactic measures of hemorrhage were allowed in predefined cases. AEs were defined and graded according to the lexicon recommended by the American Society for Gastrointestinal Endoscopy. Patients were followed for 48 h, one week and 1 mo after the procedure...
December 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29306147/the-effect-of-simulated-leg-length-discrepancy-on-lower-limb-biomechanics-during-gait
#6
Sam Khamis, Eli Carmeli
Understanding the effects of leg length discrepancy (LLD) on the biomechanics of gait and determining as to what extent of LLD alters gait is essential. A total of 91 biomechanical data were assessed from 14 lower limbs of healthy individuals walking under random conditions: shod only and with a 5, 10, 15, 20, 30 and 40 mm sole lift. Lower limb kinematics and dynamic leg length (DLL) were measured by a motion capture system. Hotelling's T-Square test was used to evaluate the differences in DLLs throughout the gait cycle in conjunction with differences between the sides based on the maximal stance phase and minimal swing phase DLLs...
December 28, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29283264/redesigning-the-coumarin-scaffold-into-small-bright-fluorophores-with-far-red-to-nir-emission-and-large-stokes-shifts-useful-for-cell-imaging
#7
Albert Gandioso, Roger Bresolí-Obach, Alba Nin-Hill, Manel Bosch, Marta Palau, Alex Galindo, Sara Contreras, Anna Rovira, Carme Rovira, Santi Nonell, Vicente Marchán
Among the palette of fluorescent organic molecules described up to now, coumarins are ideal candidates for developing cellular and molecular imaging tools due to their high cell permeability and minimal perturbation to the living system. However, blue to cyan fluorescence emission usually difficult in vivo applications due to the inherent toxicity and poor tissue penetration of short visible light wavelengths. Here we introduce a new family of coumarin-based fluorophores, nicknamed COUPY, with promising photophysical properties, including emission in the far-red/NIR region, large Stokes' shifts, high photostability, and excellent brightness...
December 28, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29283092/trends-in-the-training-of-female-urology-residents-in-canada
#8
Katherine Anderson, Karthik Tennankore, Ashley Cox
INTRODUCTION: There is limited research on why females do or do not choose a career in urology. Considering the increasing proportion of female medical students, we assessed for trends in female applicants to urology programs in Canada and their post-residency career choices. METHODS: Data from the Canadian Residency Matching Service (CaRMS) was used (1998-2015). Trends in the proportions of females applying and matching to surgical subspecialties, and applying and matching to urology were computed...
December 22, 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/29276051/discovery-research-and-development-of-new-antibiotics-the-who-priority-list-of-antibiotic-resistant-bacteria-and-tuberculosis
#9
Evelina Tacconelli, Elena Carrara, Alessia Savoldi, Stephan Harbarth, Marc Mendelson, Dominique L Monnet, Céline Pulcini, Gunnar Kahlmeter, Jan Kluytmans, Yehuda Carmeli, Marc Ouellette, Kevin Outterson, Jean Patel, Marco Cavaleri, Edward M Cox, Chris R Houchens, M Lindsay Grayson, Paul Hansen, Nalini Singh, Ursula Theuretzbacher, Nicola Magrini
BACKGROUND: The spread of antibiotic-resistant bacteria poses a substantial threat to morbidity and mortality worldwide. Due to its large public health and societal implications, multidrug-resistant tuberculosis has been long regarded by WHO as a global priority for investment in new drugs. In 2016, WHO was requested by member states to create a priority list of other antibiotic-resistant bacteria to support research and development of effective drugs. METHODS: We used a multicriteria decision analysis method to prioritise antibiotic-resistant bacteria; this method involved the identification of relevant criteria to assess priority against which each antibiotic-resistant bacterium was rated...
December 21, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/29260259/academic-musculoskeletal-radiology-influences-for-gender-disparity
#10
Sadia R Qamar, Kiran Khurshid, Sabeena Jalal, Laura Bancroft, Peter L Munk, Savvas Nicolaou, Faisal Khosa
INTRODUCTION: Research productivity is one of the few quintessential gauges that North American academic radiology departments implement to determine career progression. The rationale of this study is to quantify the relationship of gender, research productivity, and academic advancements in the musculoskeletal (MSK) radiology to account for emerging trends in workforce diversity. METHODS: Radiology residency programs enlisted in the Fellowship and Residency Electronic Interactive Database (FREIDA), Canadian Resident Matching Service (CaRMS) and International Skeletal Society (ISS) were searched for academic faculty to generate the database for gender and academic profiles of MSK radiologists...
December 20, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/29241475/israeli-national-policy-for-carbapenem-resistant-enterobacteriaceae-screening-carrier-isolation-and-discontinuation-of-isolation
#11
Ester Solter, Amos Adler, Bina Rubinovitch, Elizabeth Temkin, David Schwartz, Debby Ben-David, Samira Masarwa, Yehuda Carmeli, Mitchell J Schwaber
Since 2006, Israel has been confronting an outbreak of carbapenem-resistant Enterobacteriaceae (CRE), and in 2007 Israel implemented a national strategy to contain spread. The intervention was initially directed toward acute-care hospitals and later expanded to include an established reservoir of carriage in long-term-care hospitals. It included regular reporting of CRE cases to a central registry and daily oversight of management of the outbreak at the institutional level. Microbiological methodologies were standardized in clinical laboratories nationwide...
December 15, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/29239794/use-of-hydrotherapy-during-labour-assessment-of-pain-use-of-analgesia-and-neonatal-safety
#12
Laura Mallen-Perez, M Teresa Roé-Justiniano, Núria Colomé Ochoa, Alicia Ferre Colomat, Montse Palacio, Carme Terré-Rull
AIM: To evaluate the effectiveness of the use of hydrotherapy in pain perception and requesting analgesia in women who use hydrotherapy during childbirth and to identify possible adverse effects in infants born in water. METHOD: A multicentre prospective cohort study was performed between September 2014 and April 2016. A total of 200 pregnant women were selected and assigned to the hydrotherapy group (HG) or the control group (CG) according to desire and availability of use, data collection started at 5cm dilatation...
November 24, 2017: Enfermería Clínica
https://www.readbyqxmd.com/read/29220325/direction-modulation-of-muscle-synergies-in-a-hand-reaching-task
#13
Sharon Israely, Gerry Leisman, Chay Machluf, Tal Shnitzer, Eli Carmeli
Functional tasks of the upper extremity can be executed by a variety of muscular patterns, independent of the direction, speed and load of the task. This large number of degrees of freedom imposes a significant control burden on the CNS. Previous studies suggested that the human cortex synchronizes a discrete number of neural functional units within the brainstem and spinal cord, i.e. muscle synergies, by linearly combining them to execute a great repertoire of movements. Further exploring this control mechanism, we aim to study whether a single set of muscle synergies might be generalized to express movements in different directions...
December 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/29204853/health-indicators-and-social-gradient-in-adolescent-immigrants-health-risk-and-healthcare-experiences
#14
Cheryl Zlotnick, Daphna Birenbaum-Carmeli, Hadass Goldblatt, Yael Dishon, Omer Taychaw, Efrat Shadmi
Few studies have assessed healthcare experiences in apparently healthy adolescents, or whether healthcare attitudes are linked to the two leading adolescent health indicators, smoking and obesity. Even fewer have examined these relationships in adolescent immigrant groups or made comparisons to adolescent non-immigrants. Using a cross-sectional study, healthcare experiences were compared among three groups of adolescents (n = 589) including Russian immigrants (n = 154), Ethiopian immigrants (n = 54), and non-immigrants (n = 381)...
December 5, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/29202018/precise-probing-of-residue-roles-by-post-translational-%C3%AE-%C3%AE-c-n-aza-michael-mutagenesis-in-enzyme-active-sites
#15
Jitka Dadová, Kuan-Jung Wu, Patrick G Isenegger, James C Errey, Gonçalo J L Bernardes, Justin M Chalker, Lluís Raich, Carme Rovira, Benjamin G Davis
Biomimicry valuably allows the understanding of the essential chemical components required to recapitulate biological function, yet direct strategies for evaluating the roles of amino acids in proteins can be limited by access to suitable, subtly-altered unnatural variants. Here we describe a strategy for dissecting the role of histidine residues in enzyme active sites using unprecedented, chemical, post-translational side-chain-β,γ C-N bond formation. Installation of dehydroalanine (as a "tag") allowed the testing of nitrogen conjugate nucleophiles in "aza-Michael"-1,4-additions (to "modify")...
November 22, 2017: ACS Central Science
https://www.readbyqxmd.com/read/29194403/inhibitors-of-serine-proteases-from-a-microcystis-sp-bloom-material-collected-from-timurim-reservoir-israel
#16
Rawan Hasan-Amer, Shmuel Carmeli
Two new natural products, micropeptin TR1058 (1) and aeruginosin TR642 (2), were isolated from the hydrophilic extract of bloom material of Microcystis sp. collected from the Timurim water reservoir in Israel. The structures of compounds 1 and 2 were determined using 1D and 2D NMR spectroscopy and HR ESI MS and MS/MS techniques. Micropeptin TR1058 (1) was extremely unstable under the isolation conditions, and several degradation products were identified. NMR analysis of aeruginosin TR642 (2) revealed a mixture of eight isomers, and elucidation of its structure was challenging...
December 1, 2017: Marine Drugs
https://www.readbyqxmd.com/read/29186658/stereoselectivity-of-proline-cyclobutane-amino-acid-containing-peptide-organocatalysts-for-asymmetric-aldol-additions-a-rationale
#17
Ona Illa, Oriol Porcar-Tost, Carme Robledillo, Carlos Elvira, Pau Nolis, Oliver Reiser, Vicenç Branchadell, Rosa M Ortuño
Several α,β,α- or α,γ,α-tripeptides, consisting of a central cyclobutane β- or γ-amino acid being flanked by two (D)- or (L)-proline residues, have been synthesized and tested as organocatalysts in asymmetric aldol additions. High yields and enantioselectivities have been achieved with α,γ,α-tripeptides, being superior to the peptides containing a cyclobutane β-amino acid residue. This can probably be due to their high rigidity, which hinders the peptide catalysts to adopt the proper active conformation...
November 29, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29185694/the-molecular-mechanism-of-substrate-recognition-and-catalysis-of-the-membrane-acyltransferase-pata-from-mycobacteria
#18
Montse Tersa, Lluís Raich, David Albesa-Jové, Beatriz Trastoy, Jacques Prandi, Martine Gilleron, Carme Rovira, Marcelo E Guerin
Glycolipids play a central role in a variety of important biological processes in all living organisms. PatA is a membrane acyltransferase involved in the biosynthesis of phosphatidyl-myo-inositol mannosides (PIMs), key structural elements, and virulence factors of Mycobacterium tuberculosis. PatA catalyzes the transfer of a palmitoyl moiety from palmitoyl-CoA to the 6-position of the mannose ring linked to the 2-position of inositol in PIM1/PIM2. We report here the crystal structure of PatA in the presence of 6-O-palmitoyl-α-d-mannopyranoside, unraveling the acceptor binding mechanism...
December 11, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/29180275/-exhaustivity-and-critical-tone-of-the-news-in-print-media-reporting-medical-innovations
#19
Maite Solans-Domènech, Marta Millaret, Núria Radó-Trilla, Johanna Caro-Mendivelso, Carme Carrion, Gaietà Permanyer-Miralda, Joan M V Pons
OBJECTIVE: To quantify how exhaustive and critical were stories reporting medical innovations published in print media and to analyze the characteristics that may be related. METHOD: Content analysis of the newspapers stories related to the discovery, introduction or improvement of a medical innovation through a questionnaire with ten criteria that allows calculating an overall score of exhaustiveness. The critical view was also included. RESULTS: We analyzed 204 newspapers stories that on average obtained a comprehensiveness score of 4...
November 24, 2017: Gaceta Sanitaria
https://www.readbyqxmd.com/read/29164905/correction-to-guzmen-carmeli-and-sharabi-textual-healing-tailor-made-kabbalistic-therapeutics-in-jerusalem
#20
(no author information available yet)
No abstract text is available yet for this article.
November 22, 2017: Anthropology & Medicine
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