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https://www.readbyqxmd.com/read/29231722/selenium-iv-sorption-onto-%C3%AE-al2o3-a-consistent-description-of-the-surface-speciation-by-spectroscopy-and-thermodynamic-modeling
#1
Natalia Mayordomo, Harald Foerstendorf, Johannes Lutzenkirchen, Karsten Heim, Stephan Weiss, Ursula Alonso, Tiziana Missana, Katja Schmeide, Norbert Jordan
The sorption processes of Se(IV) onto γ-Al2O3 were studied by in situ Infrared spectroscopy, batch sorption studies, zeta potential measurements and Surface Complexation Modeling (SCM) in the pH range from 5 to 10. In situ Attenuated Total Reflection Fourier-transform Infrared (ATR FT-IR) spectroscopy revealed the predominant formation of a single inner-sphere surface species at the alumina surface, supporting previously reported EXAFS results, irrespective of the presence or absence of atmospherically derived carbonate...
December 12, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29202311/quantitative-sensory-response-of-the-scm-muscle-on-sustained-low-level-activation-simulating-co-contractions-during-bruxing
#2
Lydia Eberhard, Sophia Terebesi, Nikolaos Nikitas Giannakopoulos, Daniel Hellmann, Hans-Jürgen Schindler, Marc Schmitter, Doreen Pfau
OBJECTIVE: Bruxism is discussed as an etiological factor in the pathogenesis of orofacial and cervical pain. As the sternocleidomastoid muscle (SCM) is co-activated during clenching, our aim was to investigate, whether the muscle loading leads to peripheral or central sensitizations. DESIGN: In twenty-one healthy female volunteers, somatosensory profiles of the SCM were recorded according to the test battery of the German Research Network on Neuropathic Pain (DFNS) prior to and after an isometric muscle exercise...
November 10, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/29183524/the-place-of-elastography-in-evaluating-the-efficacy-of-radiofrequency-ablation-of-thyroid-nodules
#3
Ufuk O Idiz, Erhan Aysan, Leyla Elmas, Seyma Yildiz, Huseyin Akbulut
The usage of radiofrequency ablation (RFA) therapy and elastography to treat thyroid nodules has been increasing recently. Elastography specifically measures the stiffness of tissue using ultrasonography (US). The aim of the present study was to evaluate the relationship between the elastography values of thyroid nodules and the efficacy of RFA therapy. Ultrasonography was performed on 49 patients who had a thyroid nodule with a diameter of 1 cm or greater before RFA therapy. The RFA was performed under local anesthesia, and elastography was used to measure the stiffness of the normal thyroid tissue, sternocleidomastoid muscle (SCM) and thyroid nodules three months after RFA...
November 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/29169335/patient-and-treatment-related-risk-factors-associated-with-neck-muscle-spasm-in-nasopharyngeal-carcinoma-patients-after-intensity-modulated-radiotherapy
#4
Lu-Lu Zhang, Guan-Qun Zhou, Zhen-Yu Qi, Xiao-Jun He, Jia-Xiang Li, Ling-Long Tang, Yan-Ping Mao, Ai-Hua Lin, Jun Ma, Ying Sun
BACKGROUND: To evaluate the incidence of neck muscle spasm in nasopharyngeal carcinoma (NPC) patients that received intensity-modulated radiotherapy (IMRT), and to analyse the patient- and treatment-related risk factors associated with neck muscle spasm. METHODS: A sample of 152 IMRT-treated, biopsy-proven, nondisseminated NPC patients were retrospectively analysed. All had documented IMRT treatment plans and had returned for follow-up review at 4 years post-radiotherapy...
November 23, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29167340/hadv-protein-v-core-protein-is-targeted-by-the-host-sumoylation-machinery-to-limit-essential-viral-functions
#5
Nora Freudenberger, Tina Meyer, Peter Groitl, Thomas Dobner, Sabrina Schreiner
Human Adenoviruses (HAdV) are non-enveloped containing a linear, double-stranded DNA genome surrounded by an icosahedral capsid. To allow proper viral replication, the genome is imported through the nuclear-pore-complex associated with viral core proteins. Until now, the role of these incoming virion proteins during the early phase of infection was poorly understood.The core protein V is speculated to bridge core and the surrounding capsid. It binds the genome in a sequence-independent manner and localizes in the nucleus of infected cells, accumulating at nucleoli...
November 22, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29165431/spinal-accessory-nerve-preservation-in-modified-neck-dissections-surgical-and-functional-outcomes
#6
V Popovski, A Benedetti, D Popovic-Monevska, A Grcev, A Stamatoski, J Zhivadinovik
The spinal accessory nerve (SAN) or XI cranial nerve is frequently encountered during neck surgery, and as such is at risk of iatrogenic injury, resulting in "shoulder syndrome". Modified neck dissection (MND) with preservation of the SAN is based on desire to minimise the functional deformity associated with section of the eleventh nerve. The aim of this study was to analyse the intra-operative variations of the spinal accessory nerve pathway and to evaluate shoulder dysfunction postoperatively. The cross-sectional demonstration analysis was created through the medical records retrospectively of 165 consecutive patients who underwent neck dissections at our institution in the past 5 years with attention to ultrasound and MRI preoperative findings, type of neck dissection, type of identification and dissection of SAN, postoperative morbidity and survival rate...
October 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/29151141/mechanical-perturbations-can-elicit-triggered-reactions-in-the-absence-of-a-startle-response
#7
Christopher J Forgaard, Ian M Franks, Kimberly Bennett, Dana Maslovat, Romeo Chua
Perturbations delivered to the upper limbs elicit reflexive responses in stretched muscle at short- (M1: 25-50 ms) and long- (M2: 50-100 ms) latencies. When presented in a simple reaction time (RT) task, the perturbation can also elicit a preprogrammed voluntary response at a latency (< 100 ms) that overlaps the M2 response. This early appearance of the voluntary response following a proprioceptive stimulus causing muscle stretch is called a triggered reaction. Recent work has demonstrated that a perturbation also elicits activity in sternocleidomastoid (SCM) over a time-course consistent with the startle response and it was, therefore, proposed that the StartReact effect underlies triggered reactions (Ravichandran et al...
November 18, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29121352/arsenic-induces-members-of-the-mmu-mir-466-669-cluster-which-reduces-neurod1-expression
#8
Jui-Tung Liu, Lisa J Bain
Chronic arsenic exposure can result in adverse development effects including decreased intellectual function, reduced birth weight, and altered locomotor activity. Previous in vitro studies have shown that arsenic inhibits stem cell differentiation. MicroRNAs (miRNAs) are small non-coding RNAs that regulate multiple cellular processes including embryonic development and cell differentiation. The purpose of this study was to examine whether altered miRNA expression was a mechanism by which arsenic inhibited cellular differentiation...
November 7, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29116167/no-evidence-of-widespread-decline-of-snow-cover-on-the-tibetan-plateau-over-2000-2015
#9
Xiaoyue Wang, Chaoyang Wu, Huanjiong Wang, Alemu Gonsamo, Zhengjia Liu
Understanding the changes in snow cover is essential for biological and hydrological processes in the Tibetan Plateau (TP) and its surrounding areas. However, the changes in snow cover phenology over the TP have not been well documented. Using Moderate Resolution Imaging Spectroradiometer (MODIS) daily snow products and the Interactive Multi-sensor Snow and Ice Mapping System (IMS) data, we reported daily cloud-free snow cover product over the Tibetan Plateau (TP) for 2000-2015. Snow cover start (SCS), melt (SCM) and duration (SCD) dates were calculated for each hydrological year, and their spatial and temporal variations were analyzed with elevation variations...
November 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29114586/calcification-process-dynamics-in-coral-primary-polyps-as-observed-using-a-calcein-incubation-method
#10
Yoshikazu Ohno, Akira Iguchi, Chuya Shinzato, Mikako Gushi, Mayuri Inoue, Atsushi Suzuki, Kazuhiko Sakai, Takashi Nakamura
Calcification processes are largely unknown in scleractinian corals. In this study, live confocal imaging was used to elucidate the spatiotemporal dynamics of the calcification process in aposymbiotic primary polyps of the coral species Acropora digitifera. The fluorophore calcein was used as a calcium deposition marker and a visible indicator of extracellular fluid distribution at the tissue-skeleton interface (subcalicoblastic medium, SCM) in primary polyp tissues. Under continuous incubation in calcein-containing seawater, initial crystallization and skeletal growth were visualized among the calicoblastic cells in live primary polyp tissues...
March 2017: Biochemistry and Biophysics Reports
https://www.readbyqxmd.com/read/29111038/hybrid-composite-membranes-of-chitosan-sulfonated-polyaniline-silica-as-polymer-electrolyte-membrane-for-fuel-cells
#11
Vijayalekshmi Vijayakumar, Dipak Khastgir
A series of novel ionic cross-linked chitosan (CS) based hybrid nanocomposites were prepared by using polyaniline/nano silica (PAni/SiO2) as inorganic filler and sulfuric acid as an ionic cross-linking agent. The CS-PAni/SiO2 nanocomposites show enhanced mechanical properties and improved oxidative stabilities. These nanocomposites can be effectively used as environmental friendly proton exchange membranes. Incorporation of PAni/SiO2 into CS matrix enhances water uptake and facilitates the phase separation which enables the formation of hydrophilic domains and improves the proton transport...
January 1, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29107912/metagenomic-characterization-of-biofilter-microbial-communities-in-a-full-scale-drinking-water-treatment-plant
#12
Seungdae Oh, Frederik Hammes, Wen-Tso Liu
Microorganisms inhabiting filtration media of a drinking water treatment plant can be beneficial, because they metabolize biodegradable organic matter from source waters and those formed during disinfection processes, leading to the production of biologically stable drinking water. However, which microbial consortia colonize filters and what metabolic capacity they possess remain to be investigated. To gain insights into these issues, we performed metagenome sequencing and analysis of microbial communities in three different filters of a full-scale drinking water treatment plant (DWTP)...
October 28, 2017: Water Research
https://www.readbyqxmd.com/read/29105019/texture-specific-bag-of-visual-words-model-and-spatial-cone-matching-based-method-for-the-retrieval-of-focal-liver-lesions-using-multiphase-contrast-enhanced-ct-images
#13
Yingying Xu, Lanfen Lin, Hongjie Hu, Dan Wang, Wenchao Zhu, Jian Wang, Xian-Hua Han, Yen-Wei Chen
PURPOSE: The bag of visual words (BoVW) model is a powerful tool for feature representation that can integrate various handcrafted features like intensity, texture, and spatial information. In this paper, we propose a novel BoVW-based method that incorporates texture and spatial information for the content-based image retrieval to assist radiologists in clinical diagnosis. METHODS: This paper presents a texture-specific BoVW method to represent focal liver lesions (FLLs)...
November 5, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/29095193/the-effectiveness-of-sternocleidomastoid-flap-versus-superficial-musculoaponeurotic-system-flap-for-the-prevention-of-frey-syndrome-and-facial-depressed-deformity-in-parotid-surgery-for-pleomorphic-adenoma
#14
Marco Manola, Luca Moscillo, Vittorio Simeon, Elena De Luca, Americo Mastella
The purpose of this study was to compare 2 types of reconstruction techniques: sternocleidomastoid (SCM) flap and superficial musculoaponeurotic system (SMAS) flap after partial parotidectomy (PP) for preventing Frey syndrome (FS) and concave facial depressed deformity. A total of 99 patients underwent PP for pleomorphic adenoma of the parotid gland. The patients were divided in 2 groups according to the dimension of the tumor: tumors less than 3 cm (group A, 47 patients) and tumors greater than or equal to 3 cm (group B, 52 patients)...
October 31, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29092252/low-complexity-split-digital-backpropagation-for-digital-subcarrier-multiplexing-optical-transmissions
#15
Zhuopeng Xiao, Qunbi Zhuge, Songnian Fu, Fangyuan Zhang, Meng Qiu, Ming Tang, Deming Liu, David V Plant
A split digital backpropagation (DBP) scheme for digital subcarrier-multiplexing (SCM) transmissions, denoted as SSDBP, is proposed and studied in both experiments and simulations. The implementation of the SSDBP is split at the transmitter and the receiver, leveraging existing chromatic dispersion (CD) compensation blocks to reduce complexity. We experimentally demonstrate that the SSDBP, with a complexity reduction up to 50% compared to the original receiver based SCM-DBP, can achieve a nonlinear compensation Q(2) gain of 0...
October 30, 2017: Optics Express
https://www.readbyqxmd.com/read/29058584/radiographic-characteristics-in-congenital-scoliosis-associated-with-split-cord-malformation-a-retrospective-study-of-266-surgical-cases
#16
Fan Feng, Haining Tan, Xingye Li, Chong Chen, Zheng Li, Jianguo Zhang, Jianxiong Shen
BACKGROUND: Vertebrae, ribs, and spinal cord are anatomically adjacent structures, and their close relationships are clinically important for planning better corrective surgical approach. The objective is to identify the radiographic characteristics in surgical patients with congenital scoliosis (CS) and coexisting split cord malformation (SCM). METHODS: A total of 266 patients with CS and SCM underwent surgical treatment at our hospital between May 2000 and December 2015 was retrospectively identified...
October 23, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29052613/dynorphin-counteracts-orexin-in-the-paraventricular-nucleus-of-the-thalamus-cellular-and-behavioral-evidence
#17
Alessandra Matzeu, Marsida Kallupi, Olivier George, Paul Schweitzer, Rémi Martin-Fardon
The orexin (Orx) system plays a critical role in drug addiction and reward-related behaviors. The dynorphin (Dyn) system promotes depressive-like behavior and plays a key role in the aversive effects of stress. Orx and Dyn are co-released and have opposing functions in reward and motivation in the ventral tegmental area (VTA). Previous studies suggested that OrxA transmission in the posterior paraventricular nucleus of the thalamus (pPVT) participates in cocaine-seeking behavior. This study determined whether Orx and Dyn interact in the pPVT...
October 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29051527/micro-ribonucleic-acids-and-extracellular-vesicles-repertoire-in-the-spent-culture-media-is-altered-in-women-undergoing-in-vitro-fertilization
#18
Masood Abu-Halima, Sebastian Häusler, Christina Backes, Tobias Fehlmann, Claudia Staib, Sigrun Nestel, Irina Nazarenko, Eckart Meese, Andreas Keller
MicroRNAs (miRNAs) are class of small RNA molecules with major impact on gene regulation. We analyzed the potential of miRNAs secreted from pre-implantation embryos into the embryonic culture media as biomarkers to predict successful pregnancy. Using microarray analysis, we profiled the miRNome of the 56 spent culture media (SCM) after embryos transfer and found a total of 621 miRNAs in the SCM. On average, we detected 163 miRNAs in SCM of samples with failed pregnancies, but only 149 SCM miRNAs of embryos leading to pregnancies...
October 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29041176/multi-subcarrier-flexible-bit-loading-enabled-capacity-improvement-in-meshed-optical-networks-with-cascaded-roadms
#19
Meng Xiang, Qunbi Zhuge, Meng Qiu, Fangyuan Zhang, Xingyu Zhou, Ming Tang, Songnian Fu, David V Plant
We propose to use adaptive bit loading based on time-domain hybrid QAM (TDHQ) to maximize the capacity of subcarrier-multiplexing (SCM) systems in meshed optical networks with cascaded reconfigurable optical add and drop multiplexers (ROADMs). Note that the capacity is defined as the achievable net bit rate at the soft-decision FEC threshold of BER = 2 × 10(-2) in this work. The capacity improvement is first numerically and experimentally demonstrated in a 4-subcarrier SCM system with an aggregate symbol rate of 34...
October 16, 2017: Optics Express
https://www.readbyqxmd.com/read/29037891/chemotherapy-based-stem-cell-mobilization-does-not-result-in-significant-paraprotein-reduction-in-myeloma-patients-in-the-era-of-novel-induction-regimens
#20
Anthony Oyekunle, Evgenii Shumilov, Philippe Kostrewa, Andreas Burchert, Lorenz Trümper, Patrick Wuchter, Gerald Wulf, Ulrike Bacher, Nicolaus Kröger
Novel induction agents markedly improved remission rates in multiple myeloma (MM), and the continued use of chemotherapy for CD34(+) stem cell mobilization (SCM) has been questioned. We examined the additional effect of chemotherapy in SCM regarding remission status/morbidity. We reviewed 236 consecutive MM patients (aged 36 to 75 years) with first autologous stem cell transplantation from January 2009 to March 2016 after chemotherapy-based SCM. Responses were measured by changes in intact Ig and free light chain levels before and after chemomobilization (International Myeloma Working Group [IMWG] criteria)...
October 13, 2017: Biology of Blood and Marrow Transplantation
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