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Adriana Lau da Silva Martins, Luís Alberto César Teixeira, Fabiana Valéria da Fonseca, Lídia Yokoyama
The present study investigated the degradation of mercaptobenzothiazole (MBT), evaluating homogeneous and heterogeneous systems. An iron mineral residue from the desliming step of iron mining was used as a source in the Fenton-like reaction (advanced oxidation process). A granulometric analysis of the residue was performed and yielded fractions with high hematite (Fe2O3) and low quartz content in sieves from 74 to below 44 mm. In this particle size range, the hematite content from 58.9% to 67.4% and the Brunauer-Emmett-Teller area from 0...
October 24, 2016: Environmental Technology
Shavini Wijesuriya, Krishna Burugapalli, Ruth Mackay, Godwin Chukwuebuka Ajaezi, Wamadeva Balachandran
Surface-enhanced Raman spectroscopy (SERS) substrates manufactured using complex nano-patterning techniques have become the norm. However, their cost of manufacture makes them unaffordable to incorporate into most biosensors. The technique shown in this paper is low-cost, reliable and highly sensitive. Chemical etching of solid Ag metal was used to produce simple, yet robust SERS substrates with broadband characteristics. Etching with ammonium hydroxide (NH₄OH) and nitric acid (HNO₃) helped obtain roughened Ag SERS substrates...
October 19, 2016: Sensors
Bing Guo, Yongqiang Zhang, Shili Li, Ting Lai, Liang Yang, Juanni Chen, Wei Ding
Many cereals accumulate hydroxamic acids involved in defense of plant against various fungi, bacteria, and insects. 2,4-dihydroxy-7-methoxy-1,4-benzoxazine-3-one, commonly known as DIMBOA, is one of the principal cyclic hydroxamic acids in aqueous extracts of maize. The aim of this study was to evaluate the antibacterial activity of the isolated DIMBOA and its derivatives 2-benzoxazolinone (BOA), 6-chloro-2-benzoxazolinone (CDHB), and 2-mercaptobenzothiazole (MBT) against Ralstonia solanacearum. MBT showed the strongest antibacterial activity, followed by CDHB and DIMBOA, with minimum inhibitory concentrations (MICs) of 50, 100 and 200 mg/L, respectively, better than the BOA with 300 mg/L...
October 19, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Elham Mirzadeh, Kamran Akhbari, Anukorn Phuruangrat, Ferdinando Costantino
In order to evaluation the effects of ultrasonic irradiations, concentration of initial reagents and reaction time on formation [Cu4(MBT)4] or [Cu6(MBT)6] copper(I) metal-organic nanomaterials, [HMBT=2-Mercaptobenzothiazole], we designed some experiments and synthesized six samples under different conditions. These nanostructures were characterized by IR spectroscopy, X-ray powder diffraction (XRD) and Scanning Electron Microscopy (SEM). It seems that the tetranuclear cluster of [Cu4(MBT)4] (2) is the kinetically stable product which is formed at the initial time of the reaction and as the time went, it converts to thermodynamically stable product of [Cu6(MBT)6] (1) with hexanuclear cluster unit...
October 17, 2016: Ultrasonics Sonochemistry
Takashi Onikubo, David Shechter
Chromatin is the complex of DNA and histone proteins that is the physiological form of the eukaryotic genome. Chromatin is generally repressive for transcription, especially so during early metazoan development when maternal factors are explicitly in control of new zygotic gene expression. In the important model organism Xenopus laevis, maturing oocytes are transcriptionally active with reduced rates of chromatin assembly, while laid eggs and fertilized embryos have robust rates of chromatin assembly and are transcriptionally repressed...
2016: International Journal of Developmental Biology
Elisabeth M P Laurenssen, Hester V Eeren, Martijn J Kikkert, Jaap Peen, Dieuwertje Westra, Jack J M Dekker, Jan J V Busschbach
BACKGROUND: Mentalization-Based Treatment (MBT) is a promising, though expensive treatment for severely ill patients with Borderline Personality Disorder (BPD). A high burden of disease in terms of quality of life (QoL) and life years lost can be a reason to prioritize mental health interventions, and specifically for BPD patients. Moreover, when the societal costs of the illness are high, spending resources on high treatment costs would be more easily legitimized. Therefore, the purpose of this study was to calculate the burden of disease of BPD patients eligible for MBT...
October 12, 2016: Health and Quality of Life Outcomes
Oriana Ciani, Nicola Antonio Pascarelli, Chiara Giannitti, Mauro Galeazzi, Michela Meregaglia, Giovanni Fattore, Antonella Fioravanti
OBJECTIVE: To perform a cost-effectiveness analysis of mud-bath therapy (MBT) in addition to usual treatment compared to usual treatment alone in patients with bilateral knee osteoarthritis (OA). METHODS: An economic evaluation alongside a randomized controlled trial was conducted. Patients were randomly assigned to receive either a 2 weeks cycle of MBT in addition to their usual treatment or to continue routine care alone. The European Quality-of-Life Questionnaire-5 Dimensions (EQ-5D) questionnaire was administered at baseline, 2 weeks, 3, 6, 9, and 12 months...
October 9, 2016: Arthritis Care & Research
Daisuke Koyama, Andrew J Orr-Ewing
The photochemical dynamics of the thione 2-mercaptobenzothiazole (MBT) initiated by absorption of 330 nm ultraviolet light are investigated by ultrafast transient absorption spectroscopy. The lowest energy triplet state (T1) has mixed (3)ππ*/(3)nπ* character and is populated with a quantum yield of 0.58 ± 0.01 from the photo-excited (1)ππ* S2 state in methanol solution via rapid internal conversion to the (1)nπ* S1 state (with time constant τ1 < 150 fs). The spectroscopic evidence points to a mechanism involving intersystem crossing from S1 to the (3)nπ*/(3)ππ* T2 state (τ2 = 400 ± 100 fs) and internal conversion to T1 (with time constant for growth τ3 = 6...
September 21, 2016: Physical Chemistry Chemical Physics: PCCP
Umamaheswari B, Rama Rajaram
Microaerobic degradation of 2-Mercaptobenzothiazole (2-MBT) was investigated using an isolated bacterial strain CSMB1. It was identified as Alcaligenes sp. MH146 by genomic analysis. The isolate degraded 50mg/L concentration of 2-MBT which was measured in terms of Total organic carbon (TOC) (700mg/L). A maximum degradation of 86% with a residual TOC concentration of 101mg/L was obtained after 72h, with the biomass growth of 290mg/L. The presence of specific activity of catechol 2, 3 oxygenase was observed in all the tested derivatives of benzothiazoles and the benzene ring opening was observed through meta cleavage...
October 3, 2016: Journal of Hazardous Materials
Asing, Md Eaqub Ali, Sharifah Bee Abd Hamid, M A Motalib Hossain, Shuhaimi Mustafa, Md Abdul Kader, I S M Zaidul
The Malayan box turtle (Cuora amboinensis) (MBT) is a vulnerable and protected turtle species, but it is a lucrative item in the illegal wildlife trade because of its great appeal as an exotic food item and in traditional medicine. Although several polymerase chain reaction (PCR) assays to identify MBT by various routes have been documented, their applicability for forensic authentication remains inconclusive due to the long length of the amplicon targets, which are easily broken down by natural decomposition, environmental stresses or physiochemical treatments during food processing...
2016: PloS One
Zhaohui Zhang, Rienk H Smittenberg, Raymond S Bradley
We investigated the relationship between distributions of GDGTs, GDGT-based proxies and environmental factors in a stratified lake in northwestern Norway. More than 90% of isoGDGTs were produced at the bottom of the oxycline, indicating a predominance of ammonia-oxidizing Group I.1a of Thaumarchaeota, supported by high crenarchaeol/caldarchaeol ratios. Dissolved oxygen content, rather than temperature, exercised a primary control on TEX86 values. In spite of low BIT value in surface sediment, the reconstructed lake surface temperature was "cold" biased...
October 3, 2016: Scientific Reports
Herman Buschke, Wenzhu B Mowrey, Wendy S Ramratan, Molly E Zimmerman, David A Loewenstein, Mindy J Katz, Richard B Lipton
OBJECTIVE: We aimed to assess reliability and cross-sectional discriminative validity of the Memory Binding Test (MBT) to distinguish persons with amnestic cognitive impairment (aMCI) and dementia from cognitively normal elderly controls. METHOD: The MBT was administered to 20 participants with dementia, 31 with aMCI and 246 controls, who received the first administration of the MBT from May 2003 to December 2007, as a substudy of the community-based Einstein Aging Study (age range: 70+)...
September 27, 2016: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
Asing, Md Eaqub Ali, Sharifah Bee Abd Hamid, Md Motalib Hossain, Mohammad Nasir Uddin Ahamad, S M Azad Hossain, Nina Naquiah, I S M Zaidul
The Malayan box turtle (Cuora amboinensis) (MBT) is a vulnerable and protected species widely used in exotic foods and traditional medicines. Currently available polymerase chain reaction (PCR) assays to identify MBT lack automation and involve long targets which break down in processed or denatured tissue. This SYBR Green duplex real-time PCR assay has addressed this research gap for the first time through the combination of 120- and 141-bp targets from MBT and eukaryotes for the quantitative detection of MBT DNA in food chain and herbal medicinal preparations...
October 17, 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
Pablo Granda Araujo, Anna Gras, Marta Ginovart
Modelling cellular metabolism is a strategic factor in investigating microbial behaviour and interactions, especially for bio-technological processes. A key factor for modelling microbial activity is the calculation of nutrient amounts and products generated as a result of the microbial metabolism. Representing metabolic pathways through balanced reactions is a complex and time-consuming task for biologists, ecologists, modellers and engineers. A new computational tool to represent microbial pathways through microbial metabolic reactions (MMRs) using the approach of the Thermodynamic Electron Equivalents Model has been designed and implemented in the open-access framework NetLogo...
2016: Computational and Structural Biotechnology Journal
Maamer Slimani, Bianca Miarka, Walid Briki, Foued Cheour
BACKGROUND: Kickboxing is a high-intensity intermittent striking combat sport, which is characterized by complex skills and tactical key actions with short duration. OBJECTIVES: The present study compared and verified the relationship between mental toughness (MT), countermovement jump (CMJ) and medicine ball throw (MBT) power tests by outcomes of high-level kickboxers during National Championship. MATERIALS AND METHODS: Thirty two high-level male kickboxers (winner = 16 and loser = 16: 21...
June 2016: Asian Journal of Sports Medicine
Chandresh Shukla, Raj Kumar Maurya, Vinod Singh, Manisha Tijare
BACKGROUND: Orthodontic therapy has oral ecological changes causing increased numbers of mutans streptococci in saliva and plaque. The purpose of this study was to estimate counts and colonization pattern of Streptococcus mutans after application of fixed orthodontic appliances. MATERIALS AND METHODS: Plaque samples of randomly selected sixty patients were collected before placement of orthodontic appliances from buccal and labial aspects of the anterior teeth and four first molars and readings were recorded as T0...
July 2016: Dental Research Journal
Anthony Bateman, Jennifer O'Connell, Nicolas Lorenzini, Tessa Gardner, Peter Fonagy
BACKGROUND: Antisocial personality disorder (ASPD) is an under-researched mental disorder. Systematic reviews and policy documents identify ASPD as a priority area for further treatment research because of the scarcity of available evidence to guide clinicians and policymakers; no intervention has been established as the treatment of choice for this disorder. Mentalization-based treatment (MBT) is a psychotherapeutic treatment which specifically targets the ability to recognise and understand the mental states of oneself and others, an ability shown to be compromised in people with ASPD...
2016: BMC Psychiatry
Thiwari Ophithakorn, Aboubakr Sabah, Michele Delalonde, Chrystelle Bancon-Montigny, Thunwadee Tachapattaworakul Suksaroj, Christelle Wisniewski
Organotin compounds (OTs) have been widely used for their biocidal properties and as stabilizers in various industrial applications. Due to their high toxicity, organotins are subject to many studies regarding their behavior in wastewater treatment plant and aquatic environment. However, few studies are available regarding their behavior in lagoon sewage system, although such treatment is commonly used for sewage treatment in low-population areas. The present study aimed at studying the fate of organotins (monobutyltin (MBT), dibutyltin (DBT), and tributyltin (TBT)) in lagoon sewage system...
August 27, 2016: Environmental Science and Pollution Research International
Olivia Vergnolle, Hua Xu, JoAnn M Tufariello, Lorenza Favrot, Adel A Malek, William R Jacobs, John S Blanchard
Iron is an essential element for life, but its soluble form is scarce in the environment and is rarer in the human body. Mtb (Mycobacterium tuberculosis) produces two aryl-capped siderophores, mycobactin (MBT) and carboxymycobactin (cMBT), to chelate intracellular iron. The adenylating enzyme MbtA catalyzes the first step of mycobactin biosynthesis in two half-reactions: activation of the salicylic acid as an acyl-adenylate and ligation onto the acyl carrier protein (ACP) domain of MbtB to form covalently salicylated MbtB-ACP...
October 14, 2016: Journal of Biological Chemistry
Wenzhu B Mowrey, Richard B Lipton, Mindy J Katz, Wendy S Ramratan, David A Loewenstein, Molly E Zimmerman, Herman Buschke
BACKGROUND: The Memory Binding Test (MBT), previously known as Memory Capacity Test, has demonstrated discriminative validity for distinguishing persons with amnestic mild cognitive impairment (aMCI) and dementia from cognitively normal elderly. OBJECTIVE: We aimed to assess the predictive validity of the MBT for incident aMCI. METHODS: In a longitudinal, community-based study of adults aged 70+, we administered the MBT to 246 cognitively normal elderly adults at baseline and followed them annually...
July 14, 2016: Journal of Alzheimer's Disease: JAD
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