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retention, support, stability

Xing Zhou Qu, Ming Yi Wang, Hui Shan Ong, Chen Ping Zhang
OBJECTIVES: This study aimed to evaluate the stability of prostheses supported by zygoma implants and remaining teeth for subjects who had undergone hemi-maxillectomy. METHODS: Ten patients were included in the study. Oral rehabilitation was performed using a temporary prosthesis that was supported by remaining teeth for the first three months. Then, a zygoma implant was placed to provide support for a final prosthesis in addition to the remaining teeth. Each prosthesis was tailor-made according to biomechanical three-dimensional finite element analysis results...
October 1, 2016: Clinics
Dominika Batycka-Stachnik, Agnieszka Piwoda, Tomasz Darocha, Malgorzata Spiewak, Sylweriusz Kosinski, Anna Jarosz, Hubert Hymczak, Tomasz Sanak, Robert Galazkowski, Jacek Piatek, Janusz Konstanty-Kalandyk, Rafal Drwila
: The objectives: To show and discuss the most frequent functional problems encountered in patients who underwent extracorporeal membrane oxygenation (ECMO) treatment after severe hypothermia and point out appropriate physiotherapy procedures used in order to diminish the effects of hypothermia on the human organism. It is necessary to look for effective physiotherapeutic solutions, especially that the number of scientific publications on the subject is very limited. DESIGN: Retrospective analysis Setting: Severe Accidental Hypothermia Center ( medical intensive care unit of a university hospital) Patients or participants: Nineteen patients who were qualified for ECMO in Severe Accidental Hypothermia Center Intervention: At least three times a day rehabilitation session (physiotherapeutic procedures adequate to patient problems) and interventions in case of emergency...
2016: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
Pin Hao, Jian Tian, Yuanhua Sang, Chia-Chi Tuan, Guanwei Cui, Xifeng Shi, C P Wong, Bo Tang, Hong Liu
The fabrication of supercapacitor electrodes with high energy density and excellent cycling stability is still a great challenge. A carbon aerogel, possessing a hierarchical porous structure, high specific surface area and electrical conductivity, is an ideal backbone to support transition metal oxides and bring hope to prepare electrodes with high energy density and excellent cycling stability. Therefore, NiCo2S4 nanotube array/carbon aerogel and NiCo2O4 nanoneedle array/carbon aerogel hybrid supercapacitor electrode materials were synthesized by assembling Ni-Co precursor needle arrays on the surface of the channel walls of hierarchical porous carbon aerogels derived from chitosan in this study...
September 15, 2016: Nanoscale
Sandra Ventura, Márcio Rodrigues, Sarah Pousinho, Amílcar Falcão, Gilberto Alves
A simple and rapid high-performance liquid chromatography method with diode-array detection (HPLC-DAD) using microextraction by packed sorbent (MEPS) during the sample preparation step was developed and validated to quantify lamotrigine (LTG) in rat plasma and brain samples. MEPS variables such as pH, number of draw-eject cycles, and washing and desorption conditions were optimized. The chromatographic resolution of LTG and chloramphenicol, used as internal standard (IS), was accomplished in less than 5min on a C18 column, at 35°C, using an isocratic elution with acetonitrile (13%), methanol (13%) and water-triethylamine (99...
November 1, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Christian Mertens, Christian Freudlsperger, Jens Bodem, Michael Engel, Jürgen Hoffmann, Kolja Freier
BACKGROUND: Treatment of post-resective defects of the maxilla can be challenging and usually requires dental obturation or microvascular reconstruction. As compared to soft-tissue microvascular grafts, bone reconstruction can additionally allow for facial support and retention of dental implants. The aim of this study was to evaluate scapular tip grafts with respect to their applicability for maxillary reconstruction and their potential to retain dental implants for later dental rehabilitation...
August 25, 2016: Journal of Cranio-maxillo-facial Surgery
Meng Zhou, Joshua Catanach, Joshua Gomez, Stephanie Richins, Shuguang Deng
Nanoporous carbon was synthesized from microalgae as a promising electrode material for electric double layer capacitors due to its large specific surface area and controllable pore structures. The pore textural properties of the algae-derived-carbon (ADC) samples were measured by N2 adsorption and desorption at 77 K. The performance of the activated carbon (AC) as supercapacitor electrodes was determined by the cyclic voltammetry and galvanostatic charge/discharge tests. The effect of the nanoporous carbon structure on capacitance was demonstrated by calculating the contributions of micropores and mesopores toward capacitance...
September 28, 2016: ACS Applied Materials & Interfaces
Christian Mertens, Jose de San Jose Gonzalez, Christian Freudlsperger, Jens Bodem, Johannes Krisam, Jürgen Hoffmann, Michael Engel
BACKGROUND: Patients with hemimaxillectomy defects after tumor surgery can alternatively be rehabilitated with dental obturators or microvascular flaps. When general medical or oncologic conditions do not permit microvascular surgery, dental obturators are the only solution, yet retention for edentulous patients is often poor. The aim of this study was to evaluate whether CAD/CAM suprastructures supported by implants placed in both residual alveolar ridges and contralateral zygomatic bone could enhance obturator stability and improve functional outcomes...
August 24, 2016: Journal of Cranio-maxillo-facial Surgery
Ning Ding, Lan Zhou, Changwei Zhou, Dongsheng Geng, Jin Yang, Sheau Wei Chien, Zhaolin Liu, Man-Fai Ng, Aishui Yu, T S Andy Hor, Michael B Sullivan, Yun Zong
Lithium nitrate (LiNO3) is known as an important electrolyte additive in lithium-sulfur (Li-S) batteries. The prevailing understanding is that LiNO3 reacts with metallic lithium anode to form a passivation layer which suppresses redox shuttles of lithium polysulfides, enabling good rechargeability of Li-S batteries. However, this view is seeing more challenges in the recent studies, and above all, the inability of inhibiting polysulfide reduction on Li anode. A closely related issue is the progressive reduction of LiNO3 on Li anode which elevates internal resistance of the cell and compromises its cycling stability...
2016: Scientific Reports
Chibueze V Amanchukwu, Magali Gauthier, Thomas P Batcho, Chanez Symister, Yang Shao-Horn, Julio M D'Arcy, Paula T Hammond
Lithium-air (O2) batteries have shown great promise because of their high gravimetric energy density-an order of magnitude greater than Li-ion-but challenges such as electrolyte and electrode instability have led to poor capacity retention and low cycle life. Positive electrodes such as carbon and inorganic metal oxides have been heavily explored, but the degradation of carbon and the limited surface area of the metal oxides limit their practical use. In this work, we study the electron-conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) and show it can support oxygen reduction to form Li2O2 in a nonaqueous environment...
October 6, 2016: Journal of Physical Chemistry Letters
Alba Marín-Moreno, Juan-Carlos Espinosa, Natalia Fernández-Borges, Juan Píquer, Rosina Girones, Olivier Andreoletti, Juan-María Torres
The environment plays a key role in horizontal transmission of prion diseases, since prions are extremely resistant to classical inactivation procedures. In prior work, we observed the high stability of bovine spongiform encephalopathy (BSE) infectivity when these prions were incubated in aqueous media such as phosphate-buffered saline (PBS) or wastewater for nearly nine months. As a continuation of this experiment, the same samples were maintained in PBS or wastewater for five additional years and residual BSE infectivity was assessed in bovine PrP(C) transgenic mice...
September 1, 2016: Environmental Research
José Valladares-Neto, Karine Evangelista, Hianne Miranda de Torres, Matheus Melo Pithon, Maria Alves Garcia Santos Silva
Adult maxillary and mandible arch expansion without a surgical approach can be uncertain when long-term stability is considered. This case report describes the treatment of a 19-year-old woman with an Angle Class I malocclusion with constricted maxillary and mandibular arches. The patient's main complaint was mandibular anterior crowding. The treatment plan included expansion of the mandibular arch concurrent with semirapid maxillary expansion. An edgewise appliance was used to adjust the final occlusion. Smile esthetics and dental alignment were improved without straightening the profile...
September 2016: American Journal of Orthodontics and Dentofacial Orthopedics
Sandeep R Kunati, Yan Xu
MLN0128, an mTOR kinase inhibitor, is currently undergoing clinical investigation for treatment of a variety of cancers. To support this work, an LC-MS/MS method has been developed for determination of MLN0128 in human plasma. A structural analog STK040263 was used as the internal standard. Both MLN0128 and the IS were first extracted from plasma using methyl tert-butyl ether; then separated on a Waters XTerra® MS C18 column using a mobile phase consisting of methanol/acetonitrile/10.0 mM ammonium formate (34:6:60, v/v/v) at a flow rate of 0...
August 24, 2016: Biomedical Chromatography: BMC
Daniel Bratzke, Katrina R Quinn, Rolf Ulrich, Karin M Bausenhart
Rattat and Picard (2012) reported that the coding of temporal information in short-term memory is modality-specific, that is, temporal information received via the visual (auditory) modality is stored as a visual (auditory) code. This conclusion was supported by modality-specific interference effects on visual and auditory duration discrimination, which were induced by secondary tasks (visual tracking or articulatory suppression), presented during a retention interval. The present study assessed the stability of these modality-specific interference effects...
October 2016: Acta Psychologica
Chaoqi Zhang, Qidi Chen, Hongbing Zhan
Pseudocapacitive materials are critical to the development of supercapacitors but usually suffer from poor conductivity and bad cycling property. Here, we describe the production of novel graphene oxide nanofibers (GONFs) via a partial oxidization and exfoliation method and concurrently report that highly crystallized Ni(OH)2 nanoplates uniformly grow on reduced GONFs' outer graphene nanosheets through the hydrothermal method. Because of their unique structure with high electric conductivity, the rGONF/Ni(OH)2 composite exhibits superior specific capacitance (SC), favorable rate capability and enhanced cycling stability relative to other composites or hybrids, e...
September 7, 2016: ACS Applied Materials & Interfaces
Elizabeth Halcomb, Christine Ashley
AIMS & OBJECTIVES: To identify the aspects of working in Australian primary health care that nurses rate as the most and least satisfying. BACKGROUND: The nursing workforce in Australian primary health care has grown exponentially to meet the growing demand for health care. To maintain and further grow this requires the recruitment and retention of nurses to this setting. Understanding the factors that nurses' rate as the most and least satisfying about their job will inform strategies to enhance nurse retention...
July 27, 2016: Journal of Clinical Nursing
Ting Liang, Chunlin Chen, Xing Li, Jian Zhang
Porous carbon materials have drawn tremendous attention due to its applications in energy storage, gas/water purification, catalyst support, and other important fields. However, producing high-performance carbons via a facile and efficient route is still a big challenge. Here we report the synthesis of microporous carbon materials by employing a steam-explosion method with subsequent potassium activation and carbonization of the obtained popcorn. The obtained carbon features a large specific surface area, high porosity, and doped nitrogen atoms...
August 16, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
Chih-Chao Chang, Chih-Hsien Chang, Yi-Hsuan Lo, Ming-Hsien Lin, Chih-Chieh Shen, Ren-Shyan Liu, Hsin-Ell Wang, Chuan-Lin Chen
Melanin is an attractive target for the diagnosis and treatment of malignant melanoma. Previous studies have demonstrated the specific binding ability of benzamide moiety to melanin. In this study, we developed a novel (18)F-labeled NOTA-benzamide conjugate, Al(18)F-NOTA-BZA, which can be synthesized in 30min with a radiochemical yield of 20-35% and a radiochemical purity of >95%. Al(18)F-NOTA-BZA is highly hydrophilic (logP=-1.96) and shows good in vitro stability. Intravenous administration of Al(18)F-NOTA-BZA in two melanoma-bearing mouse models revealed highly specific uptake in B16F0 melanotic melanoma (6...
August 15, 2016: Bioorganic & Medicinal Chemistry Letters
Prashanta K Mandal, Sarifuddin, Vijaya B Kolachalama
Balloon angioplasty followed by local delivery of antiproliferative drugs to target tissue is increasingly being considered for the treatment of obstructive arterial disease, and yet there is much to appreciate regarding pharmacokinetics in arteries of non-uniform disease. We developed a computational model capable of simulating drug-coated balloon delivery to arteries of heterogeneous tissue composition comprising healthy tissue, as well as regions of fibrous, fibro-fatty, calcified and necrotic core lesions...
July 21, 2016: Cardiovascular Engineering and Technology
P F Hoffman
Geochemical, paleomagnetic, and geochronological data increasingly support the Snowball Earth hypothesis for Cryogenian glaciations. Yet, the fossil record reveals no clear-cut evolutionary bottleneck. Climate models and the modern cryobiosphere offer insights on this paradox. Recent modeling implies that Snowball continents never lacked ice-free areas. Wind-blown dust from these areas plus volcanic ash were trapped by snow on ice sheets and sea ice. At a Snowball onset, sea ice was too thin to flow and ablative ice was too cold for dust retention...
July 15, 2016: Geobiology
Paul N Durfee, Yu-Shen Lin, Darren R Dunphy, Ayşe J Muñiz, Kimberly S Butler, Kevin R Humphrey, Amanda J Lokke, Jacob O Agola, Stanley S Chou, I-Ming Chen, Walker Wharton, Jason L Townson, Cheryl L Willman, C Jeffrey Brinker
Many nanocarrier cancer therapeutics currently under development, as well as those used in the clinical setting, rely upon the enhanced permeability and retention (EPR) effect to passively accumulate in the tumor microenvironment and kill cancer cells. In leukemia, where leukemogenic stem cells and their progeny circulate within the peripheral blood or bone marrow, the EPR effect may not be operative. Thus, for leukemia therapeutics, it is essential to target and bind individual circulating cells. Here, we investigate mesoporous silica nanoparticle (MSN)-supported lipid bilayers (protocells), an emerging class of nanocarriers, and establish the synthesis conditions and lipid bilayer composition needed to achieve highly monodisperse protocells that remain stable in complex media as assessed in vitro by dynamic light scattering and cryo-electron microscopy and ex ovo by direct imaging within a chick chorioallantoic membrane (CAM) model...
September 27, 2016: ACS Nano
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