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M O M Harioly Nirina, A S Rasolonjatovo, B G Tsifanesy, Z H Rakotoarivelo, T M Raheritiana, A O Rakoto Alson, A Rasamindrakotroka
Monoclonal gammopathies are common abnormalities and their incidence increases with age. They are detected in roughly 3 % of people older over 50 years and up to 7 % of those over 70 years. Multiple myeloma (MM) is characterized by the proliferation of plasma cells within the bone marrow and excess secretion of monoclonal immunoglobulins. In Madagascar, late performance of biological examinations such as serum protein electrophoresis overestimates MM rates. We studied 54 patient records between March 2009 and January 2015 in the biology laboratory of the Joseph Ravoahangy Andrianavalona university hospital in Antananarivo (Madagascar)...
February 1, 2018: Médecine et Santé Tropicales
J A Garden, S D Pike
The hydrolysis reaction between Brønsted basic organometallic or metal-amide reagents with Brønsted acidic OH groups from water or metal-hydroxides may act as a controlled stoichiometric strategy for the formation of M-O-M bonds, if careful consideration of reaction conditions is employed. This article explores the utilisation of highly reactive organometallic and metal-amide complexes from across the periodic table as reagents for the synthesis of metal-oxo clusters, oxo-bridged heterobimetallics and metal oxide nanoparticles...
March 12, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
Wan-Lu Li, Jun-Bo Lu, Lili Zhao, Robert Ponec, David L Cooper, Jun Li, Gernot Frenking
Quantum chemical calculations using ab initio methods at the CCSD(T) level and density functional theory have been carried out for the title molecules. The electronic structures of the molecules were analyzed with a variety of charge and energy decomposition methods. The equilibrium geometries of the M2 O2 rhombic clusters exhibit very short distances between the transannular metal atoms M = Be, Mg, Ca. The calculated distances are close to standard values between double and triple bonds, but there are no chemical M-M bonds...
March 15, 2018: Journal of Physical Chemistry. A
Michelle de Oliveira Maia Parente, Ivanete Susin, Cristine Paduan Nolli, Evandro Maia Ferreira, Renato Shinkai Gentil, Daniel Montanher Polizel, Alexandre Vaz Pires, Susana Paula Alves, Rui José Branquinho Bessa
The objectives in this experiment were to compare the effects of castor oil, canola oil, or sunflower oil on lactation performance, milk composition, and milk fatty acid (FA) profile in Santa Inês ewes and on growth of lambs. Forty-four ewes (66.9 ± 4.7 kg of initial BW, mean ± SD) were penned individually with their lambs and used in a randomized complete block design with 11 blocks and four diets. The experimental diets were as follows: 1) basal diet without added oil (control), 2) 30 g FA/kg DM of canola oil (CAN), 3) 30 g FA/kg DM of sunflower oil (SUN), and 4) 30 g FA/kg DM of castor oil (CAS)...
February 15, 2018: Journal of Animal Science
Koya Prabhakara Rao, Yerraguntla Katyayani Devi, Jettiboina Suryachandram, Rayavarapu Prasada Rao, J N Behera
We achieved a dense I1 O3 hybrid superhydrophobic porous coordination polymer (PCP), [Pb(H-BTMB)(DMF)] (1), by solvothermal methods. The single-crystal XRD structure of 1 indicated that it has a three-dimensional M-L-M framework with one-dimensional M-O-M connectivity leading to an I1 O3 network. The new PCP obtained exhibited open metal sites (OMSs) by losing a coordinated DMF molecule. The degassed phase displayed selective adsorption of CO2 gas over N2 , C2 H6 , and C2 H4 gases. Additionally, it has a superhydrophobic surface with a contact angle of 156...
September 18, 2017: Inorganic Chemistry
M O M Harioly Nirina, T M Raheritiana, M O J Harioly Nirina, A S Rasolonjatovo, A O Rakoto Alson, A Rasamindrakotroka
No abstract text is available yet for this article.
August 24, 2017: Médecine et Maladies Infectieuses
Erandi Bernabé-Pablo, Vojtech Jancik, Diego Martínez-Otero, Joaquín Barroso-Flores, Mónica Moya-Cabrera
The reaction of metalloxanes [{Me LM(OH)}2 (μ-O)] [M = Al (1), Ga (2);Me L = CH{CMe(NAr)}2 - , Ar = 2,4,6-Me3 C6 H2 , Me = methyl] with an excess of BH3 ·D (D = tetrahydrofuran (THF), SMe2 ) affords annular metallaborate systems achieved through M-O-M cleavage. Compound 1 led exclusively to the formation of eight-membered ring systems [{Me LAl(μ-O){B(On Bu)}(μ-O)}2 ] (3) and [{Me LAl(μ-O)(BH)(μ-O)}2 ] (6), while for 2 the unprecedented six-membered ring systems [{(Me LGa)2 (μ-O)}(μ-O)2 {B(On Bu)}] (4) and [(Me LGa)(μ-O)2 {(BOn Bu)2 (μ-O)}] (5) were observed...
July 17, 2017: Inorganic Chemistry
C Y Chung, E S Wong, C C H Liu, M O M Wong, K K W Li
AimsTo identify the clinical features and prognostic factors of endogenous endophthalmitis caused by Klebsiella pneumoniae.MethodsThis is a retrospective case series of all patients with Klebsiella endophthalmitis managed from January 2006 to December 2015 by Kowloon East Ophthalmic Service. Statistical analysis involved hypothesis testing on the SPSS 18.0 software (SPSS). A significance level of P<0.05 was taken.ResultsIn the 10-year period, K. pneumoniae accounted for 19 out of 39 cases of endogenous endophthalmitis (48...
November 2017: Eye
Jamal Dabachi, Monique Body, Cyrille Galven, Florent Boucher, Christophe Legein
Through an analysis combining powder XRD, TGA, and19 F and1 H solid-state NMR, it is confirmed for NbO2 F and shown for TaO2 F that both contain hydroxyl defects and metal vacancies when prepared by aqueous solution synthesis. The formulations M1-x □x O2-5x (OH,F)1+5x of both the samples are determined. The effects of the usually applied thermal treatments are examined. Obtaining pure NbO2 F and TaO2 F from these samples, that is, fully removing metal vacancies and hydroxide, while avoiding the formation of M2 O5 , is not that easy...
May 1, 2017: Inorganic Chemistry
Bing Li, Junye Quan, Adeline Loh, Jianwei Chai, Ye Chen, Chaoliang Tan, Xiaoming Ge, T S Andy Hor, Zhaolin Liu, Hua Zhang, Yun Zong
Advanced batteries with long cycle life and capable of harnessing more energies from multiple electrochemical reactions are both fundamentally interesting and practically attractive. Herein, we report a robust hybrid zinc-battery that makes use of transition-metal-based redox reaction (M-O-OH → M-O, M = Ni and Co) and oxygen reduction reaction (ORR) to deliver more electrochemical energies of comparably higher voltage with much longer cycle life. The hybrid battery was constructed using an integrated electrode of NiCo2O4 nanowire arrays grown on carbon-coated nickel foam, coupled with a zinc plate anode in alkaline electrolyte...
January 11, 2017: Nano Letters
Matilde Fondo, Jesús Doejo, Ana M García-Deibe, Jesús Sanmartín-Matalobos, Ramón Vicente, Mohamed S El-Fallah, Martín Amoza, Eliseo Ruiz
An imidazolidine-phenolate ligand HL yields quadruple-bridged (μ-NCNimidazolidine )2 (μ-Ophenolate )2 ferromagnetic dinuclear nickel and cobalt complexes. Both kinds of bridges contribute to the ferromagnetic coupling, but the ferromagnetism of these samples is mainly ascribed to the double μ-Ophenolate links, on the basis of density functional theory calculations. These studies demonstrate not only that the short M-O-M angles of the M2 O2 cores favors the parallel alignment of the electrons but also that these angles are the optimal ones for maximizing the ferromagnetic contribution in these complexes...
November 21, 2016: Inorganic Chemistry
Hongping Xiang, Yingying Tang, Suyun Zhang, Zhangzhen He
The electronic structure and magnetic properties of the quasi-1D transition-metal borates PbMBO4 (M  =  Ti, V, Cr, Mn, Fe, Co) have been investigated by density functional theory, including electronic correlation. The results evidence PbCrBO4 and PbFeBO4 as antiferromagnetic (AFM) semiconductors (intra-chain AFM and inter-chain FM) and PbMnBO4 as a ferromagnetic (FM) semiconductor (both intra- and inter-chain FM) in accordance with experimental observations. For non-synthesized PbTiBO4, PbVBO4, and PbCoBO4, the ground-state magnetic structures are paramagnetic, FM, and paramagnetic, respectively...
July 13, 2016: Journal of Physics. Condensed Matter: An Institute of Physics Journal
Jae Sang Heo, Jeong-Wan Jo, Jingu Kang, Chan-Yong Jeong, Hu Young Jeong, Sung Kyu Kim, Kwanpyo Kim, Hyuck-In Kwon, Jaekyun Kim, Yong-Hoon Kim, Myung-Gil Kim, Sung Kyu Park
The low-temperature electrical passivation of an amorphous oxide semiconductor (AOS) thin-film transistor (TFT) is achieved by a deep ultraviolet (DUV) light irradiation-water treatment-DUV irradiation (DWD) method. The water treatment of the first DUV-annealed amorphous indium-gallium-zinc-oxide (a-IGZO) thin film is likely to induce the preferred adsorption of water molecules at the oxygen vacancies and leads to subsequent hydroxide formation in the bulk a-IGZO films. Although the water treatment initially degraded the electrical performance of the a-IGZO TFTs, the second DUV irradiation on the water-treated devices may enable a more complete metal-oxygen-metal lattice formation while maintaining low oxygen vacancies in the oxide films...
April 27, 2016: ACS Applied Materials & Interfaces
Maoyuan Liu, Aurélie Jacob, Clemens Schmetterer, Patrick J Masset, Louis Hennet, Henry E Fischer, Jad Kozaily, Sandro Jahn, Angus Gray-Weale
Calcium aluminosilicate CaO-Al2O3-SiO2 (CAS) melts with compositions (CaO-SiO2)(x)(Al2O3)(1-x) for x  <  0.5 and (Al2O3)(x)(SiO2)(1-x) for x ≥ 0.5 are studied using neutron diffraction with aerodynamic levitation and density functional theory molecular dynamics modelling. Simulated structure factors are found to be in good agreement with experimental structure factors. Local atomic structures from simulations reveal the role of calcium cations as a network modifier, and aluminium cations as a non-tetrahedral network former...
April 6, 2016: Journal of Physics. Condensed Matter: An Institute of Physics Journal
Moamen M O M Aly, Yasser Abo-Madyan, Lennart Jahnke, Frederik Wenz, Gerhard Glatting
PURPOSE: A method is presented to radiobiologically compare sequential (SEQ) and simultaneously integrated boost (SIB) breast radiotherapy. METHODS: The method is based on identically prescribed biologically effective dose (iso-BED) which was achieved by different prescribed doses due to different fractionation schemes. It is performed by converting the calculated three-dimensional dose distribution to the corresponding BED distribution taking into consideration the different number of fractions for generic α/β ratios...
February 2, 2016: Radiation Oncology
L M A Van Loon, M O M Van De Ven, K T M Van Doesum, C M H Hosman, C L M Witteman
BACKGROUND: Children of parents with mental illness have an elevated risk of developing a range of mental health and psychosocial problems. Yet many of these children remain mentally healthy. OBJECTIVE: The present study aimed to get insight into factors that protect these children from developing internalizing and externalizing problems. METHODS: Several possible individual, parent-child, and family protective factors were examined cross-sectionally and longitudinally in a sample of 112 adolescents...
2015: Child & Youth Care Forum
N Lytvynenko, S Cherenko, Y Feschenko, M Pogrebna, Y Senko, A Barbova, M Manzi, O Denisiuk, A Ramsay, R Zachariah
SETTING: A tertiary care facility in Ukraine, a high multi- and extensively drug-resistant tuberculosis (MDR/XDR-TB) burden country. OBJECTIVES: To assess the management and treatment outcomes of MDR, pre-XDR-TB and XDR-TB. DESIGN: Cohort study using programme data, 2006-2011. RESULTS: Of 484 individuals with drug-resistant TB, 217 (45%) had MDR-, 153 (32%) pre-XDR- and 114 (24%) XDR-TB. Of all resistant types completing the intensive phase of treatment, 322 (67%) were alive and had culture converted...
October 21, 2014: Public Health Action
O Dolgusev, N Obevzenco, O Padalco, S Pankrushev, A Ramsay, R Van den Bergh, M Manzi, O Denisiuk, R Zachariah
This cohort study assessed drug susceptibility testing (DST) patterns and associated treatment outcomes from Transnistria, Moldova, from 2009 to 2012. Of 1089 newly registered tuberculosis (TB) patients with available DST results, 556 (51%) had some form of drug resistance, while 369 (34%) had multidrug-resistant TB (MDR-TB). There were four cases of extensively drug-resistant TB. MDR-TB patients had poor treatment success (45%); human immunodeficiency virus positivity and a history of incarceration were associated with an unfavourable treatment outcome...
October 21, 2014: Public Health Action
K Davtyan, R Zachariah, H Davtyan, A Ramsay, O Denisiuk, M Manzi, M Khogali, R Van den Bergh, A Hayrapetyan, M Dara
We assessed the performance of decentralised tuberculosis (TB) out-patient centres in tuberculosis (TB) case notification and treatment success in Armenia. An average threshold case notification of ⩾37/100 000 was seen in centres that had higher numbers of presumptive TB patients, where more TB was diagnosed by in-patient facilities and where TB contacts were examined. The number of doctors and/or TB specialists at centres did not influence case notification. Onsite smear microscopy was significantly associated with a treatment success rate of ⩾85% for new TB patients...
October 21, 2014: Public Health Action
Jesse T Jedial, Aminu Shittu, Faruk M Tambuwal, Mikail B Abubakar, Muhammed K Garba, Jacob P Kwaga, Folorunso O Fasina
OBJECTIVES: Escherichia coli are an important group of bacteria in the normal gastrointestinal system but can sometimes cause infections in domestic animals and man. Donkeys are routinely used as multipurpose animal but details of burdens of potentially infectious bacteria associated with it are limited. The prevalence and associations between intestinal shedding of E. coli O157 and animal characteristics and management factors were studied among 240 randomly selected working donkeys in north-western Nigeria...
2015: Veterinary Record Open
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