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https://www.readbyqxmd.com/read/28810229/photodegradation-of-sulfathiazole-under-simulated-sunlight-kinetics-photo-induced-structural-rearrangement-and-antimicrobial-activities-of-photoproducts
#1
Xi-Zhi Niu, Julie Glady-Croué, Jean-Philippe Croué
Photolysis is a core natural process impacting the fate of some sulfonamide antibiotics in sunlit waters. In this study, sunlight-induced phototransformation of sulfathiazole was investigated. A photolytic quantum yield of 0.079 was obtained in buffered water (pH = 8.0). Different natural organic matter isolates inhibited the photolysis of sulfathiazole by light screening effect. A kinetic model was developed to predict the photodegradation rate of sulfathiazole using the light screening correction factor of the water matrix in the wavelength range of 300-350 nm...
August 9, 2017: Water Research
https://www.readbyqxmd.com/read/28805255/mandibular-complete-denture-versus-single-implant-overdenture-a-systematic-review-of-patient-reported-outcomes
#2
REVIEW
Túlio Eduardo Nogueira, Danilo Rocha Dias, Cláudio Rodrigues Leles
The single-implant mandibular overdenture (SIMO) has been proposed as an alternative for edentulous patients who are poorly adapted to their dentures due to low retention and stability of the conventional mandibular complete denture (CD). However, there is a lack of evidence regarding the effectiveness of SIMO, which can be measured by examining patient perception of treatment effects. The aim of this systematic review was to assess the comparative results of CD and SIMO treatments by using patient-reported outcome measures...
August 14, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28773819/nature-of-the-electrochemical-properties-of-sulphur-substituted-limn%C3%A2-o%C3%A2-spinel-cathode-material-studied-by-electrochemical-impedance-spectroscopy
#3
Monika Bakierska, Michał Świętosławski, Roman Dziembaj, Marcin Molenda
In this work, nanostructured LiMn₂O₄ (LMO) and LiMn₂O3.99S0.01 (LMOS1) spinel cathode materials were comprehensively investigated in terms of electrochemical properties. For this purpose, electrochemical impedance spectroscopy (EIS) measurements as a function of state of charge (SOC) were conducted on a representative charge and discharge cycle. The changes in the electrochemical performance of the stoichiometric and sulphur-substituted lithium manganese oxide spinels were examined, and suggested explanations for the observed dependencies were given...
August 16, 2016: Materials
https://www.readbyqxmd.com/read/28762520/nanomaterials-as-stationary-phases-and-supports-in-liquid-chromatography
#4
REVIEW
Sandya R Beeram, Elliott Rodriguez, Suresh Doddavenkatanna, Zhao Li, Allegra Pekarek, Darin Peev, Kathryn Goerl, Gianfranco Trovato, Tino Hofmann, David S Hage
The development of various nanomaterials over the last few decades has led to many applications for these materials in liquid chromatography (LC). This review will look at the types of nanomaterials that have been incorporated into LC systems and the applications that have been explored for such systems. A number of carbon-based nanomaterials and inorganic nanomaterials have been considered for use in LC, ranging from carbon nanotubes, fullerenes and nanodiamonds to metal nanoparticles and nanostructures based on silica, alumina, zirconia and titanium dioxide...
August 1, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28744319/-177-lu-pentixather-comprehensive-preclinical-characterization-of-a-first-cxcr4-directed-endoradiotherapeutic-agent
#5
Margret Schottelius, Theresa Osl, Andreas Poschenrieder, Frauke Hoffmann, Seval Beykan, Heribert Hänscheid, Andreas Schirbel, Andreas K Buck, Saskia Kropf, Markus Schwaiger, Ulrich Keller, Michael Lassmann, Hans-Jürgen Wester
Purpose: Based on the clinical relevance of the chemokine receptor 4 (CXCR4) as a molecular target in cancer and on the success of [(68)Ga]pentixafor as an imaging probe for high-contrast visualization of CXCR4-expression, the spectrum of clinical CXCR4-targeting was expanded towards peptide receptor radionuclide therapy (PRRT) by the development of [(177)Lu]pentixather. Experimental design: CXCR4 affinity, binding specificity, hCXCR4 selectivity and internalization efficiency of [(177)Lu]pentixather were evaluated using different human and murine cancer cell lines...
2017: Theranostics
https://www.readbyqxmd.com/read/28728975/continuous-nitrogen-removal-by-a-single-stage-reactor-packed-with-ring-laced-string-medium
#6
Masahiro Tatara, Shu Ishikawa, Yoshiyuki Ueno
The efficiency of nitrogen removal by a partial-nitritation/anammox (PNA) reaction was investigated using a packed-bed reactor in which ring-laced strings were used as the supporting medium. A stable population of PNA microorganisms was established from typical activated sludge, after less than two months of acclimation in the packed-bed reactor, by applying a high nitrogen-loading rate (NLR: 0.53 kg/m(3)/d) and short hydraulic retention time (HRT: 1.8 h). The stability of reactor performance was confirmed in industrial wastewater (IW), demonstrating a nitrogen removal efficiency (NRE) of greater than 77% during 260 days of continuous operation, between 0...
July 17, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/28728415/-177-lu-labeled-cyclic-minigastrin-analogues-with-therapeutic-activity-in-cck2r-expressing-tumors-preclinical-evaluation-of-a-kit-formulation
#7
Christine Rangger, Maximilian Klingler, Lajos Balogh, Zita Pöstényi, Andras Polyak, Dariusz Pawlak, Renata Mikołajczak, Elisabeth von Guggenberg
Minigastrin (MG) analogues specifically target cholecystokinin-2 receptors (CCK2R) expressed in different tumors and enable targeted radiotherapy of advanced and disseminated disease when radiolabeled with a beta emitter such as (177)Lu. Especially truncated MG analogues missing the penta-Glu sequence are associated with low kidney retention and seem therefore most promising for therapeutic use. Based on [d-Glu(1),desGlu(2-6)]MG (MG11) we have designed the two cyclic MG analogues cyclo(1,9)[γ-d-Glu(1),desGlu(2-6),d-Lys(9)]MG (cyclo-MG1) and cyclo(1,9)[γ-d-Glu(1),desGlu(2-6),d-Lys(9),Nle(11)]MG (cyclo-MG2)...
August 7, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28700791/efficacy-of-tramadol-extended-release-for-opioid-withdrawal-a-randomized-clinical-trial
#8
Kelly E Dunn, D Andrew Tompkins, George E Bigelow, Eric C Strain
Importance: Opioid use disorder (OUD) is a significant public health problem. Supervised withdrawal (ie, detoxification) from opioids using clonidine or buprenorphine hydrochloride is a widely used treatment. Objective: To evaluate whether tramadol hydrochloride extended-release (ER), an approved analgesic with opioid and nonopioid mechanisms of action and low abuse potential, is effective for use in supervised withdrawal settings. Design, Setting, and Participants: A randomized clinical trial was conducted in a residential research setting with 103 participants with OUD...
July 12, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28693573/a-qualitative-assessment-of-an-abstinence-oriented-therapeutic-community-for-prisoners-with-substance-use-disorders-in-kyrgyzstan
#9
Lyuba Azbel, Julia Rozanova, Ingo Michels, Frederick L Altice, Heino Stöver
BACKGROUND: Kyrgyzstan, where HIV is concentrated in prisons and driven by injection drug use, provides a prison-based methadone maintenance therapy program as well as abstinence-oriented therapeutic community based on the 12-step model called the "Clean Zone." We aimed to qualitatively assess how prisoners navigate between these treatment options to understand the persistence of the Clean Zone despite a lack of evidence to support its effectiveness in treating opioid use disorders. METHODS: We conducted an analysis of policy documents and over 60 h of participant observation in February 2016, which included focus groups with a convenience sample of 20 therapeutic community staff members, 110 prisoners across three male and one female prisons, and qualitative interviews with two former Clean Zone participants...
July 10, 2017: Harm Reduction Journal
https://www.readbyqxmd.com/read/28661126/transition-metal-ions-enable-the-transition-from-electrospun-prolamin-protein-fibers-to-nitrogen-doped-freestanding-carbon-films-for-flexible-supercapacitors
#10
Yixiang Wang, Jingqi Yang, Rongbing Du, Lingyun Chen
Flexible carbon ultrafine fibers are highly desirable in energy storage and conversion devices. Our previous finding showed that electrospun hordein/zein fibers stabilized by Ca(2+) were successfully transferred into nitrogen-doped carbon ultrafine fibers for supercapacitors. However, their relatively brittle nature needed to be improved. Inspired by this stabilizing effect of Ca(2+), in this work, four transition metal divalent cations were used to assist the formation of flexible hordein/zein-derived carbon ultrafine fibers...
July 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28628356/clips-versus-resilient-liners-used-with-bilateral-posterior-prefabricated-bars-for-retaining-four-implant-supported-mandibular-overdentures
#11
Mona Gibreel, Mohammed Fouad, Fatma El-Waseef, Nesma El-Amier, Hamdy Marzook
The objective of this research was to clinically compare peri-implant tissue health of bar-clips versus silicone-resilient liners used with bilateral posterior bars for retaining four implant supported mandibular overdentures. Thirty completely edentulous male patients (mean age 65) were randomly assigned into two equal groups. Each patient received four implants in canine and first molar regions of the mandible using flapless surgical technique. Mandibular overdentures were immediately connected to the implants with bilateral prefabricated instant adjusting bars...
June 19, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28619721/hagfish-slime-exudate-stabilization-and-its-effect-on-slime-formation-and-functionality
#12
L J Böni, R Zurflüh, M Widmer, P Fischer, E J Windhab, P A Rühs, S Kuster
Hagfish produce vast amounts of slime when under attack. The slime is the most dilute hydrogel known to date, and is a highly interesting material for biomaterial research. It forms from a glandular secrete, called exudate, which deploys upon contact with seawater. To study slime formation ex vivo and to characterize its material properties, stabilization of the sensitive slime exudate is crucial. In this study, we compared the two main stabilization methods, dispersion in high osmolarity citrate/PIPES (CP) buffer and immersion in oil, and tested the influence of time, temperature and pH on the stability of the exudate and functionality of the slime...
July 15, 2017: Biology Open
https://www.readbyqxmd.com/read/28589922/graphene-oxide-hydrogel-as-a-restricted-area-nanoreactor-for-synthesis-of-3d-graphene-supported-ultrafine-tio2-nanorod-nanocomposites-for-high-rate-lithium-ion-battery-anodes
#13
Jianli Cheng, Guifang Gu, Wei Ni, Qun Guan, Yinchuan Li, Bin Wang
Three-dimensional graphene-supported TiO2 nanorod nanocomposites (3D GS-TNR) are prepared using graphene oxide hydrogel as a restricted-area nanoreactor in the hydrothermal process, in which well-distributed TiO2 nanorods with a width of approximately 5 nm and length of 30 nm are conformally embedded in the 3D interconnected graphene network. The 3D graphene oxide not only works as a restricted-area nanoreactor to constrain the size, distribution and morphology of the TiO2; it also work as a highly interconnected conducting network to facilitate electrochemical reactions and maintain good structural integration when the nanocomposites are used as anode materials in lithium-ion batteries...
June 7, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28571293/management-of-severely-atrophic-mandibular-ridge-using-hollow-denture-with-an-analytical-discussion-a-clinical-case-report
#14
Rupal Jaydip Shah, Sanjay Balaji Lagdive, Satyaprakash Ranjit Shah, Vishal Bipinbihari Verma, Shraddha Lalit Saini
A severely resorbed edentulous mandibular ridge, although fairly common in occurrence, its rehabilitation poses a challenging clinical situation for the prosthodontist. This has implored prosthodontists to seek for ingenious modifications in the conventional prosthetic forms so as to gratify patient's expectations who have difficulty in wearing the mandibular complete dentures. Opting for the most suitable treatment modality mandates equilibrating the retention, stability and support triad to the fullest. Extreme resorption of the denture bearing tissue bed may lead to problems with achieving adequate levels of prosthetic satisfaction for the patient...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28535354/high-capacity-and-ultrafast-na-ion-storage-of-a-self-supported-3d-porous-antimony-persulfide-graphene-foam-architecture
#15
Yanying Lu, Ning Zhang, Shuang Jiang, Yudong Zhang, Meng Zhou, Zhanliang Tao, Lynden A Archer, Jun Chen
The key challenge for high-performance sodium-ion batteries is the exploitation of appropriate electrode materials with a long cycling stability and high rate capability. Here, we report Sb2S5 nanoparticles (∼5 nm) uniformly encapsulated in three-dimensional (3D) porous graphene foam, which were fabricated by a facile hydrothermal coassembly strategy, as a high-performance anode material for sodium-ion batteries. The as-prepared composite can be directly used as electrodes without adding a binder or current collector, exhibiting outstanding electrochemical performance with a high reversible capacity (845 mA h g(-1) at 0...
June 14, 2017: Nano Letters
https://www.readbyqxmd.com/read/28533736/telescopic-overdenture-a-case-report
#16
C S Shruthi, R Poojya, Swati Ram, Anupama
PATIENT: This report describes the case of a 68 year old female patient who presented with the chief complaint of difficulty in chewing and poor aesthetics due to missing teeth. The patient was interested in saving the remaining natural teeth and desired minimal tissue coverage from the prosthesis. After consideration of all the factors involved, it was deemed advisable to resort to a palate free maxillary telescopic complete denture and a mandibular removable partial denture. DISCUSSION: Considering the age of the patient and the cost involved, implant supported prosthesis was ruled out as a treatment option for the patient...
March 2017: International Journal of Biomedical Science: IJBS
https://www.readbyqxmd.com/read/28494331/graduate-nurses-evaluation-of-mentorship-development-of-a-new-tool
#17
Lay Hwa Tiew, Catherine S L Koh, Debra K Creedy, W S W Tam
AIM: Develop and test an instrument to measure graduate-nurses' perceptions of a structured mentorship program. BACKGROUND: New graduate nurses may experience difficulties in the transition from student to practitioner. Mentoring is commonly used to support graduates. However, there is a lack of published tools measuring graduate nurses' perceptions of mentorship. As mentoring is resource intensive, development and testing of a validated tool are important to assist in determining program effectiveness...
July 2017: Nurse Education Today
https://www.readbyqxmd.com/read/28487369/n-glycosylation-affects-the-stability-and-barrier-function-of-the-muc16-mucin
#18
Takazumi Taniguchi, Ashley M Woodward, Paula Magnelli, Nicole M McColgan, Sylvain Lehoux, Sarah Melissa P Jacobo, Jérôme Mauris, Pablo Argüeso
Transmembrane mucins are highly O-glycosylated glycoproteins that coat the apical glycocalyx on mucosal surfaces and represent the first line of cellular defense against infection and injury. Relatively low levels of N-glycans are found on transmembrane mucins, and their structure and function remain poorly characterized. We previously reported that carbohydrate-dependent interactions of transmembrane mucins with galectin-3 contribute to maintenance of the epithelial barrier at the ocular surface. Now, using MALDI-TOF mass spectrometry, we report that transmembrane mucin N-glycans in differentiated human corneal epithelial cells contain primarily complex-type structures with N-acetyllactosamine, a preferred galectin ligand...
June 30, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28469829/combination-prosthetic-design-providing-a-superior-retention-for-mid-facial-defect-rehabilitation-a-case-report
#19
Supassra Nilanonth, Prana Shakya, Natdhanai Chotprasert, Theerathavaj Srithavaj
Large maxillofacial defects from malignant tumor treatment are rarely rehabilitated by surgical reconstruction alone. Ameloblastic carcinoma, a rare aggressive odontogenic malignant tumor, requires wide surgical excision to gain a tumor-free margin. In the post-surgical defect, prosthetic rehabilitation is the treatment of choice to restore function and esthetics. Moreover, an intra-oral prosthesis such as an obturator restores speech, mastication and deglutition. Retention of the obturator is a major problem while rehabilitating large defects...
April 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28447378/soil-aggregation-and-associated-microbial-communities-modify-the-impact-of-agricultural-management-on-carbon-content
#20
Pankaj Trivedi, Manuel Delgado-Baquerizo, Thomas C Jeffries, Chanda Trivedi, Ian C Anderson, Kaitao Lai, Matthew McNee, Kenneth Flower, Bhupinder Pal Singh, David Minkey, Brajesh K Singh
Soil carbon (C) stabilisation is known to depend in part on its distribution in structural aggregates, and upon soil microbial activity within the aggregates. However, the mechanisms and relative contributions of different microbial groups to C turnover in different aggregates under various management practices remain unclear. The aim of this study was to determine the role of soil aggregation and their associated microbial communities in driving the responses of soil organic matter (SOM) to multiple management practices...
August 2017: Environmental Microbiology
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