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#29050062   2017/10/19 Save this To Up

[Cerebral Emergency - Important Anesthesiological Aspects].

The anesthesiological management of cerebral emergency represents a great challenge for action under pressure and under time pressure and requires smooth interprofessional cooperation. The exact knowledge of the pathophysiological and pharmacological relationships is the basis for rapid identification of therapeutic influences and possible disturbing factors. In the acute situation, paCO2 and MAP are the central determinants for the anesthetist to ensure cerebral perfusion and the resulting cerebral oxygenation. Especially in patients with SHT, a difficult airway must always be expected. Knowledge of the appropriate steps and the necessary equipment must be available. In patients under anticoagulant therapy, written instructions for suspending this therapy are extremely helpful. Interventional thrombectomy is a new emergency situation for the anesthetist. The door-to-needle time has to be kept as short as possible by defined treatment paths and rapid goal-oriented work. Every emergency also creates a stressful reaction in those treating the patient - in a sense, the cerebral emergency "in us". This has a decisive influence on the perception and action of the individual and the entire team.

2241 related Products with: [Cerebral Emergency - Important Anesthesiological Aspects].

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#29050061   2017/10/19 Save this To Up

[Perioperative Anaphylaxia on Drugs].

The diagnostic evaluation of perioperative anaphylaxia is of great importance for the medical care of the affected persons in the context of renewed interventions in general anesthesia. The most frequent triggers include muscle relaxants, antibiotics, latex and analgesics of the type of the cyclooxygenase inhibitors, but other perioperatively administered drugs such as opioids, anesthetics, benzodiazepines, dyes, disinfectants and even corticosteroids or drug additives may also be the cause in rare cases. The most important aim is therefore the identification of the responsible drug, for which a near-time allergological diagnosis should be carried out within the first 4 weeks to 6 months after the reaction. At the end of the examinations, the patient receives a structured allergy passport, which includes information on the drug reaction, the triggers and alternative medicines, as well as possible preventive measures for future surgical procedures. It should be noted, however, that the latter are not a guarantee that, upon renewed exposure to the causative medicinal product, there will be no, possibly even heavier, anaphylactic reaction.

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#29050020   2017/10/19 Save this To Up

Root Surface Caries - Rationale Behind Good Diagnostic Practice.

Root surfaces, which with increasing age become exposed to dental biofilms, will react to the intermittent pH fluctuations at the interface between the biofilm and the cementum/dentin surface. If dental biofilm is left undisturbed in stagnation sites in the dentition, the underlying mineral surfaces may gradually develop dental caries characterized by a subsurface loss of mineral. In root surfaces, the demineralization is accompanied by microbial invasion of the cementum and dentin resulting in a pulpo-dentinal defense reaction. Most lesions progress slowly and experimental in situ studies as well as clinical studies document that the daily removal of the biofilm using fluoride toothpaste can arrest lesion progression. By applying this caries control measure, caries lesions can thus be transformed from active lesions to inactive lesions. The diagnostic characteristics of these types of lesions are mandatory to apply in daily clinical practice to avoid unnecessary restorative and antimicrobial treatments.

2865 related Products with: Root Surface Caries - Rationale Behind Good Diagnostic Practice.

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#29049992   2017/10/19 Save this To Up

Iridoids with Genipin Stem Nucleus Inhibit Lipopolysaccharide-Induced Inflammation and Oxidative Stress by Blocking the NF-κB Pathway in Polycystic Ovary Syndrome.

Polycystic ovary syndrome (PCOS) is a common endocrine disorder in women, and it is usually characterized by chronic inflammation, oxidative stress, and altered microRNA expression. The aim of this study is to investigate how the effects of iridoids with genipin stem nucleus inhibit PCOS complications. The interactions between iridoids were investigated, as well.

1826 related Products with: Iridoids with Genipin Stem Nucleus Inhibit Lipopolysaccharide-Induced Inflammation and Oxidative Stress by Blocking the NF-κB Pathway in Polycystic Ovary Syndrome.

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#29049983   2017/10/19 Save this To Up

Investigation on biomass nitrogen-enriched pyrolysis: Influence of temperature.

Biomass (bamboo waste) nitrogen-enriched pyrolysis was carried out in a fixed bed with NH3 atmosphere at 400-800 °C, and formation mechanism of N-containing species was explored in depth. Results showed that N-enriched pyrolysis greatly increased bio-oil and gas yields. H2 yield increased sharply to 130 mL/g (32.93 vol%) and became the main composition at higher temperature, while CH4 and CO yields deceased, and the lower heating value of gas reached ∼14 MJ/Nm(3). For bio-oil, the content of phenols (main compositions) and N-containing species increased significantly, and the maximums reached 61.33% and 11.47%, respectively. While that of acetic acid (disappeared), O-containing species (aldehydes/ketones/furans/esters) and aromatics decreased largely accordingly. For biochar, Nitrogen content increased, and it contained abundant pyridininc-N, pyrrolic-N, quaternary-N, and pyridone-N-oxide. Possible reaction pathways of biomass N-enriched pyrolysis was proposed based on products evolution. In conclusion, biomass N-enriched pyrolysis could obtain high-valued N-containing chemical species and functional biochar.

2196 related Products with: Investigation on biomass nitrogen-enriched pyrolysis: Influence of temperature.

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#29049982   2017/10/19 Save this To Up

Characterization of soluble microbial products in a partial nitrification sequencing batch biofilm reactor treating high ammonia nitrogen wastewater.

In present study, the characterization of soluble microbial products (SMP) was evaluated in a partial nitrification sequencing batch biofilm reactor (SBBR). During the stable operation of SBBR, the NH4(+)-N removal efficiency and nitrite accumulation ratio were 96.70±0.41% and 93.77±1.04%, respectively. According to excitation-emission matrix (EEM), the intensities of protein-like substances were reduced under anoxic and aerobic phases, whereas humic-like substances had little change during the whole cycle. Parallel factor analysis (PARAFAC) further indentified two components and their fluorescence intensity scores were both reduced. Synchronous fluorescence spectra revealed that the fluorescence intensity of protein-like fraction decreased with reaction time. Two-dimensional correlation spectroscopy (2D-COS) further demonstrated that protein-like fraction might decrease earlier than the other fractions. The information obtained in present study is of fundamental significance for understanding the key components in SMP and their changes in partial nitrification system by using a spectral approach.

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Anti 3 DG imidazolone Mon Apoptosis antibody array Cell cycle antibody array Cytokine antibody array i Signal transduction antib AKT Phospho-Specific Arra AKT PKB Signaling Phospho AMPK Signaling Phospho-Sp Apoptosis Phospho-Specifi Cancer Apoptosis Phospho- Cell Cycle Control Phosph Cell Cycle Phospho-Specif

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#29049972   2017/10/19 Save this To Up

Noble metals decorated hierarchical maghemite magnetic tubes as an efficient recyclable catalyst.

The noble metal nanocatalysts on high surface area magnetic material supports have huge technological importance in the field of catalysis. The green synthesis of magnetic-noble metal hybrid material has another technological importance. In this study, we report a novel, efficient, and sustainable synthesis methodology for Au nanoparticles (NPs) deposited hierarchical magnetic maghemite (γ-Fe2O3) tubes. In this methodology, the green tea extract was used as a reducing agent for both iron oxide and Au NPs synthesis. The natural cotton fibers were used as a sacrificial template to obtain porous and high surface area (90m(2)/g) magnetic γ-Fe2O3 tubes. Further, the Au NPs (7±2nm) were in situ deposited onto the tubes surface after reduction of Au salt by green tea extract. The XPS spectra was confirmed the presence of negatively charged Au on the iron oxide supports due to charge transfer process and strong metal-support material electronic interaction. The Au NPs decorated γ-Fe2O3 tubes were possessed 18emu/g saturation magnetization at room temperature which is large enough for the magnetic separation. The synthesized material was showed very good catalytic activity for the hydrogenation reaction of 4-nitrophenol to aminophenol conversion. As the catalyst has very good magnetic property, the reusability of catalyst was checked after magnetic separation and found only 0.29% reduction in catalytic activity after the sixth cycle. Further, the Ag and Pd NPs decorated γ-Fe2O3 tubes were also synthesized and tested for the same catalytic reaction and found the highest activity for Pd.

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#29049893   2017/10/19 Save this To Up

Fecal microbiota analysis of children with small intestinal bacterial overgrowth among residents of an urban slum in Brazil.

To analyze the fecal microbiota composition of children living in an urban slum in Brazil, with or without small intestinal bacterial overgrowth, and to investigate the occurrence of stunting and anemia.

2952 related Products with: Fecal microbiota analysis of children with small intestinal bacterial overgrowth among residents of an urban slum in Brazil.

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#29049884   2017/10/19 Save this To Up

A Highly Efficient and Robust Cation Ordered Perovskite Oxides as a Bi-Functional Catalyst for Rechargeable Zinc-Air Batteries.

Of the various catalysts that have been developed to date for high performance and low cost, perovskite oxides have attracted the attention due to their inherent catalytic activity as well as structural and structural flexibility. Especially, high amount of Pr substitution of the cation ordered perovskite oxide originated from the state-of-the-art Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) electrode could be a good electrode or catalyst because of its high oxygen kinetics, electrical conductivity, oxygen capacity and structural stability. However, even though it has many favorable intrinsic properties, the conventional high temperature treatment for perovskite synthesis, such as solid-state reaction and combustion process, leads the particle size increase which gives rise to the decrease of surface area and the mass activity. Therefore, we prepared mesoporous nano-fibers of various cation-ordered PrBa0.5Sr0.5Co2-xFexO5+δ (x = 0, 0.5, 1, 1.5, and 2) perovskites via electrospinning. The well controlled B-site metal ratio and large surface area (~20 m(2) g(-1)) of mesoporous nanofiber result high performance of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), and stability in Zn-air battery.

1776 related Products with: A Highly Efficient and Robust Cation Ordered Perovskite Oxides as a Bi-Functional Catalyst for Rechargeable Zinc-Air Batteries.

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#29049882   2017/10/19 Save this To Up

Plasmonic Nanochemistry Based on Nanohole Array.

We show that the growth of Ag nanoparticles (NPs) follows the areas of maximum plasmonic field in nanohole arrays (NAs). We thus obtain Ag NP rings not connected to the metallic rim of the nanoholes. The photocatalytic effect resulting from the enhanced E-field of NAs boosts the reaction and is responsible for the site-selectivity. The strategy, using plasmonics to control a chemical reaction, can be expanded to organic reactions, e.g., synthesis of polypyrrole. After removing the NA film, ordered ring-shaped Ag NPs are easily obtained, inspiring a facile micropatterning method. Overall, the results reported in this work will contribute to the control of chemical reactions at the nanoscale and are promising to inspire a facile way to pursue patterned chemical reactions.

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