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https://www.readbyqxmd.com/read/28928780/assessment-of-oral-health-parameters-among-students-attending-special-schools-of-mangalore-city
#1
Tom Peter, Deepthi Anna Cherian, Tim Peter
BACKGROUND: The aim of the study was to assess the oral health status and treatment needs and correlation between dental caries susceptibility and salivary pH, buffering capacity and total antioxidant capacity among students attending special schools of Mangalore city. MATERIALS AND METHODS: In this study 361 subjects in the age range of 12-18 years were divided into normal (n = 84), physically challenged (n = 68), and mentally challenged (n = 209) groups. Their oral health status and treatment needs were recorded using the modified WHO oral health assessment proforma...
July 2017: Dental Research Journal
https://www.readbyqxmd.com/read/28928523/influence-of-ph-and-salt-concentration-on-functional-properties-of-walnut-protein-from-different-extraction-methods
#2
Haifang Hu, Tao Fan, Xiaoyan Zhao, Xiaowei Zhang, Yali Sun, Hongkai Liu
The effect of pH and NaCl on solubility and functional properties of walnut proteins obtained through AOT reverse micelles, enzyme-assisted reverse micelles and aqueous phase extraction methods was investigated and compared. Extraction yield, foaming properties, water holding capacities of protein obtained through enzyme-assisted reverse micelles at pH 2-12 and NaCl concentration 0.1-1 M were significantly higher than those of the AOT reverse micelles and aqueous phase extracted two. The solubility of proteins by AOT reverse micelles and enzyme-assisted reverse micelles at certain pH and NaCl concentration had no significant difference, but was higher that of the aqueous buffer...
August 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28926220/facile-construction-of-novel-3-dimensional-graphene-amorphous-porous-carbon-hybrids-with-enhanced-lithium-storage-properties
#3
Daming Zhu, Huaqiu Liu, Lixuan Tai, Xiaonan Zhang, Sheng Jiang, Shumin Yang, Lin Yi, Wen Wen, Xiaolong Li
Nowadays, porous materials become essential to many technological applications. In this account, 3-dimensional skeleton composite materials consisted of a core-shell amorphous porous carbon/multi-layer graphene are synthesized by chemical vapor deposition on Ni foam using a facile one-step growth method. The data suggest that these composites have not only outstanding electrical and mechanical properties of the multi-layer graphene but also the mesoporous characteristics of the amorphous carbon. Moreover, the composited carbon materials perfectly inherit the macroporous structure of Ni foam, and the amorphous carbon core in the skeleton serves as a cushion to buffer the volume variation after the removal of Ni...
September 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28926049/one-pot-synthesis-of-multicomponent-mo-co-metal-sulfide-carbon-nanoboxes-as-anode-materials-for-improving-na-ion-storage
#4
Juan Xiang, Taeseup Song
Multicomponent MoS2/Co9S8/C hollow nanocubes were developed by the one-pot solvothermal method and a subsequent calcination process. Benefitting from the merits of hollow structures, the highly-conductive carbon matrix and the buffering effect provided by uniformly-mixed MoS2 and Co9S8, the MoS2/Co9S8/C anode shows high capacity and rate capability as the anode of sodium-ion batteries.
September 19, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28922616/novel-testing-for-corrosion-of-glass-ceramics-for-dental-applications
#5
J F Esquivel-Upshaw, F Ren, S M Hsu, F Y Dieng, D Neal, A E Clark
The effects of pH cycling immersion on the corrosion of glass-based ceramic materials were investigated by examining the silicon release level in the immersion solution and the surface morphology of the ceramic after immersion. The hypothesis that pH cycling causes more surface degradation than constant immersion was tested. An inductively coupled plasma atomic emission spectrometer was used for Si ion concentration determination and scanning electron microscopy for surface morphology analyses. Two pH cycling sequences (pH 2, 7, 10 and pH 10, 2, 7) were employed in this study...
September 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28921830/trends-application-and-future-prospectives-of-microbial-carbonic-anhydrase-mediated-carbonation-process-for-ccus
#6
REVIEW
Chintan Bhagat, Pravin Dudhagara, Shantilal Tank
Growing industrialisation and desire for better economy of countries accelerated the emission of greenhouse gasses, more than the buffering capacity of earth atmosphere. Among, various Green House Gasses (GHGs), CO2 occupies the first position in anthroposphere and has detrimental effects on the ecosystem. For decarbonization, several non-biological methods of carbon capture, utilisation, and storage (CCUS) are in use from last few decades, but they are suffering from narrow applicability. Recently, CO2 emission and its disposal related problem encourage for implementation of bioprocessing to achieve zero waste economy for a sustainable environment...
September 18, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28920437/real-time-metabolic-interactions-between-two-bacterial-species-using-a-carbon-based-ph-microsensor-as-a-scanning-electrochemical-microscopy-secm-probe
#7
Vrushali Subhash Joshi, Partha Sarathi Sheet, Nyssa Cullin, Jens Kreth, Dipankar Koley
We have developed a carbon-based, fast-response potentiometric pH microsensor for use as a scanning electrochemical microscopy (SECM) chemical probe to quantitatively map the microbial metabolic exchange between two bacterial species, commensal Streptococcus gordonii and pathogenic Streptococcus mutans. The 25-μm diameter H+ ion-selective microelectrode or pH microprobe showed a Nernstian slope of 59 mV/pH and high selectivity against major ions such Na+, K+, Ca2+ and Mg2+. In addition, the unique conductive membrane composition aided us in performing an amperometric approach curve to position the probe and obtain a high-resolution pH map of the microenvironment produced by the lactate-producing S...
September 18, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28914803/achieving-congestion-mitigation-using-distributed-power-control-for-spectrum-sensor-nodes-in-sensor-network-aided-cognitive-radio-ad-hoc-networks
#8
Long Zhang, Haitao Xu, Fan Zhuo, Hucai Duan
The data sequence of spectrum sensing results injected from dedicated spectrum sensor nodes (SSNs) and the data traffic from upstream secondary users (SUs) lead to unpredictable data loads in a sensor network-aided cognitive radio ad hoc network (SN-CRN). As a result, network congestion may occur at a SU acting as fusion center when the offered data load exceeds its available capacity, which degrades network performance. In this paper, we present an effective approach to mitigate congestion of bottlenecked SUs via a proposed distributed power control framework for SSNs over a rectangular grid based SN-CRN, aiming to balance resource load and avoid excessive congestion...
September 15, 2017: Sensors
https://www.readbyqxmd.com/read/28914246/comparative-evaluation-of-the-effects-of-casein-phosphopeptide-amorphous-calcium-phosphate-cpp-acp-and-xylitol-containing-chewing-gum-on-salivary-flow-rate-ph-and-buffering-capacity-in-children-an-in-vivo-study
#9
Rahul J Hegde, Janhavi B Thakkar
AIM: This study aimed to compare and evaluate the changes in the salivary flow rate, pH, and buffering capacity before and after chewing casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) and xylitol-containing chewing gums in children. MATERIALS AND METHODS: Sixty children aged between 8 and 12 years were selected for the study. They were randomly divided into Group 1 (CPP-ACP chewing gum) and Group 2 (xylitol-containing chewing gum) comprising thirty children each...
October 2017: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/28903177/changes-in-bacteria-composition-and-efficiency-of-constructed-wetlands-under-sustained-overloads-a-modeling-experiment
#10
F Boano, A Rizzo, R Samsó, J García, R Revelli, L Ridolfi
The average organic and hydraulic loads that Constructed Wetlands (CWs) receive are key parameters for their adequate long-term functioning. However, over their lifespan they will inevitably be subject to either episodic or sustained overloadings. Despite that the consequences of sustained overloading are well known (e.g., clogging), the threshold of overloads that these systems can tolerate is difficult to determine. Moreover, the mechanisms that might sustain the buffering capacity (i.e., the reduction of peaks in nutrient load) during overloads are not well understood...
September 9, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28893031/estimation-of-salivary-parameters-among-autoimmune-thyroiditis-patients
#11
Yasmeen Amthul Syed, Bh Satheesh Reddy, T K Ramamurthy, Kavitha Rajendra, Narendra Kumar Nerella, Meenakshi Krishnan, M V Ramesh, Rezwana Begum Mohammed
INTRODUCTION: Saliva is a complex secretion that protects and lubricates the oral cavity. Various systemic diseases and their treatment alter the salivary gland function; one such disease is Autoimmune Thyroid Disease (AITD). AITD has been postulated to exert its hormonal influence on the salivary glands, leading to reduced salivary output. There's a paucity of literature, verifying the stated conjunction in human subjects. AIM: The aim was to investigate the salivary profile in AITD patients and its comparison with controls...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28888547/green-nanotechnology-for-synthesis-and-characterization-of-poly-3-hydroxybutyrate-co-3-hydroxyhexanoate-nanoparticles-for-sustained-bortezomib-release-using-supercritical-co2-assisted-particle-formation-combined-with-electrodeposition
#12
Ruken Esra Demirdöğen, Fatih Mehmet Emen, Kasim Ocakoglu, Paramasivam Murugan, Kumar Sudesh, Göktürk Avşar
Carbon dioxide assisted particle formation combined with electrospraying using supercritical CO2 (scCO2) as an aid (Carbon Dioxide Assisted Nebulization-Electrodeposition, CAN-ED) was used to produce Bortezomib loaded poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) P(3HB-co-3HHx) nanoparticles for sustained release. The morphology and structure of the prepared nanoparticles were investigated by SEM, TEM and FT-IR spectroscopy. Average diameter of particles obtained was 155nm and the average core sizes of P(3HB-co-3HHx) nanoparticles were between 6-13nm...
September 6, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28888008/injectable-methotrexate-loaded-polycaprolactone-microspheres-physicochemical-characterization-biocompatibility-and-hemocompatibility-evaluation
#13
Mukesh Dhanka, Chaitra Shetty, Rohit Srivastava
In this study, bare polycaprolactone microspheres (PCL MPs) and methotrexate (MTX) loaded PCL microspheres (MTX-PCL MPs) have been developed by oil-in-water emulsion solvent evaporation method using hydroxypropyl methylcellulose (HPMC) as an emulsifier. Encapsulation efficiency and loading capacity of methotrexate were found to be 51.28%±0.52 and 2.8%±0.06 respectively. Environmental scanning electron microscopy showed the PCL MPs and MTX-PCL MPs to have a spherical shape and smooth surface morphology. The mean size of microspheres (23μm) was found within injectability criteria...
December 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28887988/enhanced-bovine-serum-albumin-absorption-on-the-n-hydroxysuccinimide-activated-graphene-oxide-and-its-corresponding-cell-affinity
#14
Kun Xiong, Qingbo Fan, Tingting Wu, Haishan Shi, Lin Chen, Minhao Yan
By successively reacting with N-(3-Dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS), the carboxyl on the graphene oxide (GO) surface was successfully activated into NHS active ester. In this study, bovine serum albumin (BSA) was selected as a model protein, used for studying the protein absorption capacity of the NHS activated GO (GO-EDC-NHS). Approximately 12.75mg of BSA could be covalent bonded onto the GO-EDC-NHS surface (BSA-CB-GO), whereas only 6.83mg of BSA physical absorbed onto the GO surface (BSA-NB-GO)...
December 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28887234/vaginal-semisolid-products-technological-performance-considering-physiologic-parameters
#15
Rita Monteiro Machado, Ana Palmeira-de-Oliveira, José Martinez-de-Oliveira, Rita Palmeira-de-Oliveira
Vaginal semisolid products are frequently used to treat vaginal infections and atrophy-related symptoms of menopause. Formulations composition and the methods for their characterization, especially those developed concerning the target epithelia, are key tools to predict in vivo results at early stages of product development. However, recent studies on this subject have been almost exclusively focused on anti-HIV preparations. The aim of this work consists on improving traditional characterization methods by using physiological parameters in order to construct predictive tools to characterize a new ideal vaginal semisolid formulation whatever target it may have...
September 5, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28884134/intracellular-ph-regulates-trail-induced-apoptosis-and-necroptosis-in-endothelial-cells
#16
Zhu-Xu Zhang, Ingrid Gan, Alexander Pavlosky, Xuyan Huang, Benjamin Fuhrmann, Anthony M Jevnikar
During ischemia or inflammation of organs, intracellular pH can decrease if acid production exceeds buffering capacity. Thus, the microenvironment can expose parenchymal cells to a reduced extracellular pH which can alter pH-dependent intracellular functions. We have previously shown that while silencing caspase-8 in an in vivo ischemia reperfusion injury (IRI) model results in improved organ function and survival, removal of caspase-8 function in a donor organ can paradoxically result in enhanced receptor-interacting protein kinase 1/3- (RIPK1/3-) regulated necroptosis and accelerated graft loss following transplantation...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28881495/anatase-tio2-as-low-cost-and-sustainable-buffering-filler-for-nanosize-silicon-anodes-in-lithium-ion-batteries
#17
Fabio Maroni, Gilberto Carbonari, Fausto Croce, Roberto Tossici, Francesco Nobili
The design of effective supporting matrices to efficiently cycle Si nanoparticles is often difficult to be achieved and requires complex preparation strategies. In this work, we present a simple synthesis of low-cost and environmentally benign Anatase-TiO2 nanoparticles as buffering filler for Si nanoparticles (Si@TiO2). Average anatase crystallite size is estimated in 5 nm. A complete structural, morphological and electrochemical characterization is performed. Electrochemical test results show very good specific capacity values around up to 1000 mAhg-1 and cycling at several specific currents, ranging from 500 mAg-1 to 2000 mAg-1, demonstrating a very good tolerance to high cycling rates...
September 7, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28879064/measuring-coral-calcification-under-ocean-acidification-methodological-considerations-for-the-45-ca-uptake-and-total-alkalinity-anomaly-technique
#18
Stephanie Cohen, Thomas Krueger, Maoz Fine
As the oceans become less alkaline due to rising CO2 levels, deleterious consequences are expected for calcifying corals. Predicting how coral calcification will be affected by on-going ocean acidification (OA) requires an accurate assessment of CaCO3 deposition and an understanding of the relative importance that decreasing calcification and/or increasing dissolution play for the overall calcification budget of individual corals. Here, we assessed the compatibility of the (45)Ca-uptake and total alkalinity (TA) anomaly techniques as measures of gross and net calcification (GC, NC), respectively, to determine coral calcification at pHT 8...
2017: PeerJ
https://www.readbyqxmd.com/read/28875692/facile-synthesis-of-si-sic-composite-as-an-anode-material-for-lithium-ion-batteries
#19
Duc Tung Ngo, Hang T T Le, Xuan-Manh Pham, Choong-Nyeon Park, Chan-Jin Park
We propose a simple method for direct synthesis of a Si@SiC composite derived from a SiO2@C precursor via a Mg thermal reduction method as an anode material for Li-ion batteries. Owing to the extremely high exothermic reaction between SiO2 and Mg, along with the presence of carbon, SiC can be spontaneously produced with the formation of Si. The synthesized Si@SiC was composed of well-mixed SiC and Si nanocrystallites. The SiC content of the Si@SiC was adjusted by tuning the carbon content of the precursor. Among the resultant Si@SiC materials, the Si@SiC-0...
September 6, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28873711/effect-of-dairy-matrices-on-the-survival-of-streptococcus-thermophilus-brevibacterium-aurantiacum-and-hafnia-alvei-during-digestion
#20
Leticia Hernández-Galán, Thomas Cattenoz, Steven Le Feunteun, Alexis Canette, Romain Briandet, Sylvia Le-Guin, Eric Guedon, Jessie Castellote, Jerome Delettre, Eric Dugat Bony, Pascal Bonnarme, Henry Eric Spinnler, Sandra T Martín Del Campo, Daniel Picque
This study evaluated the ability of dairy matrices, different in composition (with and without fat) and structure (liquid and gel), to enhance microorganisms survival through digestion. The viability of three dairy microorganisms Streptococcus thermophilus, Brevibacterium aurantiacum and Hafnia alvei was measured during in vitro and in vivo digestion. S. thermophilus was highly sensitive to gastric stress, and was not found in the duodenal compartment. B. auranticum was moderately sensitive to gastric stress but resistant to duodenal stress...
October 2017: Food Research International
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