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https://www.readbyqxmd.com/read/29457377/pseudohalide-induced-2d-ch-3-nh-3-2-pbi-2-scn-2-perovskite-for-ternary-resistive-memory-with-high-performance
#1
Xue-Feng Cheng, Xiang Hou, Jin Zhou, Bi-Jun Gao, Jing-Hui He, Hua Li, Qing-Feng Xu, Na-Jun Li, Dong-Yun Chen, Jian-Mei Lu
Recently, organic-inorganic hybrid perovskites (OIHP) are studied in memory devices, but ternary resistive memory with three states based on OIHP is not achieved yet. In this work, ternary resistive memory based on hybrid perovskite is achieved with a high device yield (75%), much higher than most organic ternary resistive memories. The pseudohalide-induced 2D (CH3 NH3 )2 PbI2 (SCN)2 perovskite thin film is prepared by using a one-step solution method and fabricated into Al/perovskite film/indium-tin oxide (glass substrate as well as flexible polyethylene terephthalate substrate) random resistive access memory (RRAM) devices...
February 19, 2018: Small
https://www.readbyqxmd.com/read/29456652/analysis-of-the-levels-of-th9-cells-and-cytokines-in-the-peripheral-blood-of-mice-with-bronchial-asthma
#2
Ruifang Tong, Liping Xu, Lihong Liang, Han Huang, Rui Wang, Yinghui Zhang
The purpose of the study was to detect the level of T-helper type 9 (Th9) cells and the cytokine interleukin-9 (IL-9) in peripheral blood of mice with bronchial asthma, and to explore the relationship between the expression of Th9 cells and the pathogenesis of asthma. Thirty female-specific pathogen-free (SPF) Bagg' albino (BALB)/c mice were selected and randomly divided into the control group (n=15) and the bronchial observation group (n=15). Mice in the bronchial observation group were treated with ovalbumin (OVA) for sensitization and induction of a mouse model of asthma...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29456176/comment-on-acid-and-nonacid-gastroesophageal-reflux-after-single-anastomosis-gastric-bypass-an-objective-assessment-using-24-hour-multichannel-intraluminal-impedance-ph-metry
#3
EDITORIAL
Kenneth B Jones
No abstract text is available yet for this article.
January 31, 2018: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/29455984/hyaluronate-coating-enhances-the-delivery-and-biocompatibility-of-gold-nanoparticles
#4
Bedia Begum Karakocak, Jue Liang, Pratim Biswas, Nathan Ravi
For targeted delivery with nanoparticles (NPs) as drug carriers, it is imperative that the NPs are internalized into the targeted cell. Surface properties of NPs influence their interactions with cells. We examined the responses of retinal pigment epithelial cells, NIH 3T3 fibroblast cells, and Chinese hamster ovary cells to gold nanoparticles (Au NPs) in their nascent form as well as coated with end-thiolated hyaluronate (HS-HA). The grafting density of HS-HA on Au NPs was calculated based on total organic carbon measurements and thermal gravimetric analysis...
April 15, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29455656/the-e3-ubiquitin-ligase-nedd4-mediates-cell-migration-signaling-of-egfr-in-lung-cancer-cells
#5
Genbao Shao, Ranran Wang, Aiqin Sun, Jing Wei, Ke Peng, Qian Dai, Wannian Yang, Qiong Lin
BACKGROUND: EGFR-dependent cell migration plays an important role in lung cancer progression. Our previous study observed that the HECT E3 ubiquitin ligase NEDD4 is significantly correlated with tumor metastasis and required for migration and invasion signaling of EGFR in gastric cancer cells. However, how NEDD4 promotes the EGFR-dependent lung cancer cell migration is unknown. This study is to elucidate the mechanism by which NEDD4 mediates the EGFR lung cancer migration signaling. METHODS: Lentiviral vector-loaded NEDD4 shRNA was used to deplete endogenous NEDD4 in lung cancer cell lines...
February 19, 2018: Molecular Cancer
https://www.readbyqxmd.com/read/29455534/rate-limiting-o-o-bond-formation-pathways-for-water-oxidation-on-hematite-photoanode
#6
Yuchao Zhang, Hongna Zhang, Anan Liu, Chuncheng Chen, Wenjing Song, Jincai Zhao
Photoelectrochemical (PEC) water oxidation has attracted heightened interest in solar fuel production. It is well accepted that water oxidation on hematite is mediated by surface trapped holes, characterized to be the high valent -Fe═O species. However, the mechanism of the subsequent rate-limiting O-O bond formation step is still a missing piece. Herein we investigate the reaction order of interfacial hole transfer by rate law analysis based on electrochemical impedance spectroscopy (EIS) measurement and probe the reaction intermediates by operando Fourier-transform infrared (FT-IR) spectroscopy...
February 21, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29455356/a-novel-electrocatalytic-approach-for-effective-degradation-of-rh-b-in-water-using-carbon-nanotubes-and-agarose
#7
Haiyang Liu, Miao Ren, Zhaocheng Zhang, Jiao Qu, Ying Ma, Nan Lu
Carbon nanotubes (CNTs)/agarose (AG) membrane on the ITO (indium tin oxide) conductive glass, with high efficiency of electrocatalytic degradation for rhodamine B (Rh-B) in water, was prepared using an easy and green method. The prepared CNTs/AG membrane was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive spectra (EDS), infrared spectroscopy (IR), and electrochemical impedance spectroscopy (EIS). The results revealed that CNTs were dispersed in the AG membrane...
February 18, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29455352/electrokinetic-fenton-remediation-of-organochlorine-pesticides-from-historically-polluted-soil
#8
Maofei Ni, Shulei Tian, Qifei Huang, Yanmei Yang
Soil contamination by persistent organic pollutants (POPs) poses a great threat to historically polluted soil worldwide. In this study, soils were characterized, and organochlorine pesticides contained in the soils were identified and quantified. Individual electrokinetic (IE), EK-Fenton-coupled technologies (EF), and enhanced EK-Fenton treatment (E-1, E-2, and E-3) were applied to remediate soils contaminated with hexachloro-cyclohexane soprocide (HCH) and dichloro-diphenyl-trichloroethane (DDT). Variation of pH, electrical conductivity, and electroosmotic flow was evaluated during the EK-Fenton process...
February 17, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29454941/characterization-and-electrochemical-response-of-dna-functionalized-2nm-gold-nanoparticles-confined-in-a-nanochannel-array
#9
Ana S Peinetti, Helena Ceretti, Martín Mizrahi, Graciela A González, Silvana A Ramírez, Félix G Requejo, Javier M Montserrat, Fernando Battaglini
Polyvalent gold nanoparticle oligonucleotide conjugates are subject of intense research. Even though 2nm diameter AuNPs have been previously modified with DNA, little is known about their structure and electrochemical behavior. In this work, we examine the influence of different surface modification strategies on the interplay between the meso-organization and the molecular recognition properties of a 27-mer DNA strand. This DNA strand is functionalized with different sulfur-containing moieties and immobilized on 2nm gold nanoparticles confined on a nanoporous alumina, working the whole system as an electrode array...
February 9, 2018: Bioelectrochemistry
https://www.readbyqxmd.com/read/29454742/tumor-target-amplification-implications-for-nano-drug-delivery-systems
#10
REVIEW
Khaled Seidi, Heidi A Neubauer, Richard Moriggl, Rana Jahanban-Esfahlan, Tahereh Javaheri
Tumor cells overexpress surface markers which are absent from normal cells. These tumor-restricted antigenic signatures are a fundamental basis for distinguishing on-target from off-target cells for ligand-directed targeting of cancer cells. Unfortunately, tumor heterogeneity impedes the establishment of a solid expression pattern for a given target marker, leading to drastic changes in quality (availability) and quantity (number) of the target. Consequently, a subset of cancer cells remains untargeted during the course of treatment, which subsequently promotes drug-resistance and cancer relapse...
February 15, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29454507/pediatric-early-warning-score-systems-nurses-perspective-a-focus-group-study
#11
EDITORIAL
Claus Sixtus Jensen, Pia Bonde Nielsen, Hanne Vebert Olesen, Hans Kirkegaard, Hanne Aagaard
PURPOSE: Pediatric early warning score (PEWS) systems are used to monitor pediatric patients' vital signs and facilitate the treatment of patients at risk of deteriorating. The aim of this study was to gain knowledge about nurses' experiences with PEWS and to highlight factors facilitating and impeding the use of PEWS tools in clinical practice. DESIGN AND METHODS: An exploratory qualitative design was chosen using focus group interviews to gain a deeper understanding of nurses' experiences with PEWS...
February 14, 2018: Journal of Pediatric Nursing
https://www.readbyqxmd.com/read/29454362/self-assembly-disassembly-hysteresis-of-nanoparticles-composed-of-marginally-soluble-short-elastin-like-polypeptides
#12
Markian S Bahniuk, Abdullah K Alshememry, Scott V Elgersma, Larry D Unsworth
BACKGROUND: Elastin-like polypeptides (ELPs) are a fascinating biomaterial that has undergone copious development for a variety of therapeutic applications including as a nanoscale drug delivery vehicle. A comprehensive understanding of ELP self-assembly is lacking and this knowledge gap impedes the advancement of ELP-based biomaterials into the clinical realm. The systematic examination of leucine-containing ELPs endeavors to expand existing knowledge about fundamental assembly-disassembly behaviours...
February 17, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29454191/show-me-the-way-rust-effector-targets-in-heterologous-plant-systems
#13
REVIEW
Cécile Lorrain, Benjamin Petre, Sébastien Duplessis
For years, the study of rust fungal effectors has been impeded by the lack of molecular genetic tools in rust pathosystems. The recent use of heterologous plants to perform effector screens (effectoromics)-including effector localisation (cellular targets) and protein interactors (molecular targets) in plant cells-has changed the game. These screens revealed that many candidate effectors from various rust fungi target specific plant cell compartments, including chloroplasts, and associate with specific plant protein complexes...
February 14, 2018: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/29453403/tailoring-of-magnetoimpedance-effect-and-magnetic-softness-of-fe-rich-glass-coated-microwires-by-stress-annealing
#14
V Zhukova, J M Blanco, M Ipatov, M Churyukanova, S Taskaev, A Zhukov
There is a pressing need for improving of the high-frequency magneto-impedance effect of cost-effective soft magnetic materials for use in high-performance sensing devices. The impact of the stress-annealing on magnetic properties and high frequency impedance of Fe-rich glass-coated microwires was studied. Hysteresis loops of Fe-rich microwires have been considerably affected by stress- annealing. In stress-annealed Fe- rich microwire we obtained drastic decreasing of coercivity and change of character of hysteresis loop from rectangular to linear...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29453366/time-dependent-enhanced-corrosion-of-ti6al4v-in-the-presence-of-h-2-o-2-and-albumin
#15
Yue Zhang, Owen Addison, Fei Yu, Brendy C Rincon Troconis, John R Scully, Alison J Davenport
There is increasing concern regarding the biological consequences of metal release from implants. However, the mechanisms underpinning implant surface degradation, especially in the absence of wear, are often poorly understood. Here the synergistic effect of albumin and H 2 O 2 on corrosion of Ti6Al4V in physiological saline is studied with electrochemical methods. It is found that albumin induces a time-dependent dissolution of Ti6Al4V in the presence of H 2 O 2 in physiology saline. Potentiostatic polarisation measurements show that albumin supresses dissolution in the presence of H 2 O 2 at short times (<24 h) but over longer time periods (120 h) it significantly accelerates corrosion, which is attributed to albumin-catalysed dissolution of the corrosion product layer resulting in formation of a thinner oxide film...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29453359/rational-construction-of-uniform-coni-based-core-shell-microspheres-with-tunable-electromagnetic-wave-absorption-properties
#16
Na Chen, Jian-Tang Jiang, Cheng-Yan Xu, Shao-Jiu Yan, Liang Zhen
Core-shell particles with integration of ferromagnetic core and dielectric shell are attracting extensive attention for promising microwave absorption applications. In this work, CoNi microspheres with conical bulges were synthesized by a simple and scalable liquid-phase reduction method. Subsequent coating of dielectric materials was conducted to acquire core-shell structured CoNi@TiO 2 composite particles, in which the thickness of TiO 2 is about 40 nm. The coating of TiO 2 enables the absorption band of CoNi to effectively shift from K u to S band, and endows CoNi@TiO 2 microspheres with outstanding electromagnetic wave absorption performance along with a maximum reflection loss of 76...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29453347/reversing-coffee-ring-effect-by-laser-induced-differential-evaporation
#17
Tony M Yen, Xin Fu, Tao Wei, Roshan U Nayak, Yuesong Shi, Yu-Hwa Lo
The coffee-ring effect, ubiquitously present in the drying process of aqueous droplets, impedes the performance of a myriad of applications involving precipitation of particle suspensions in evaporating liquids on solid surfaces, such as liquid biopsy combinational analysis, microarray fabrication, and ink-jet printing, to name a few. We invented the methodology of laser-induced differential evaporation to remove the coffee-ring effect. Without any additives to the liquid or any morphology modifications of the solid surface the liquid rests on, we have eliminated the coffee-ring effect by engineering the liquid evaporation profile with a CO 2 laser irradiating the apex of the droplets...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29452560/health-care-efficiencies-consolidation-and-alternative-models-vs-health-care-and-antitrust-regulation-irreconcilable-differences
#18
Michael W King
Despite the U.S. substantially outspending peer high income nations with almost 18% of GDP dedicated to health care, on any number of statistical measurements from life expectancy to birth rates to chronic disease, 1 the U.S. achieves inferior health outcomes. In short, Americans receive a very disappointing return on investment on their health care dollars, causing economic and social strain. 2 Accordingly, the debates rage on: what is the top driver of health care spending? Among the culprits: poor communication and coordination among disparate providers, paperwork required by payors and regulations, well-intentioned physicians overprescribing treatments, drugs and devices, outright fraud and abuse, and medical malpractice litigation...
November 2017: American Journal of Law & Medicine
https://www.readbyqxmd.com/read/29452166/metformin-ameliorates-the-progression-of-atherosclerosis-via-suppressing-macrophage-infiltration-and-inflammatory-responses-in-rabbits
#19
Qiangbing Yang, Hongming Yuan, Mao Chen, Jiali Qu, He Wang, Biao Yu, Jiahuan Chen, Shengnan Sun, Xiaochun Tang, Wenzhi Ren
AIMS: The present study aimed to investigate the possible effects of metformin on the progression of atherosclerosis in a rabbit model. MAIN METHODS: Rabbits were randomly divided into three groups (n = 10): the control (Ctrl) group (fed with a chow diet), and two experimental groups, the AS group and the Met group (both received an atherogenic diet). After 2 weeks of acclimatization, the rabbits in the AS and Met groups were given a placebo and metformin, respectively, daily by gavage for 10 weeks...
February 13, 2018: Life Sciences
https://www.readbyqxmd.com/read/29452054/community-resources-support-adherence-to-treatment-for-childhood-cancer-in-el-salvador
#20
Nuria Rossell, Carmen Salaverria, Angelica Hernandez, Soad Alabi, Roberto Vasquez, Miguel Bonilla, Catherine G Lam, Raul Ribeiro, Ria Reis
OBJECTIVE: In order to reduce nonadherence and treatment abandonment of children with cancer in El Salvador, institutions located nearby the patients' homes were involved to provide support. Methodological approach: Health clinics and municipality offices in the patients' communities were asked to assist families who were not promptly located after missing hospital appointments, or those whose financial limitations were likely to impede continuation of treatment. Data was collected about the number of contacted institutions, the nature of help provided, staff's time investments, and parents' perceptions about the intervention...
February 16, 2018: Journal of Psychosocial Oncology
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