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https://www.readbyqxmd.com/read/29787034/critical-preparation-and-readiness-to-support-future-change
#1
Elizabeth Curtis, Emma Duffy, Frank O'Rourke, Sylvia Huntley-Moore, Annabel Walsh, Ken Coogan, Catherine Comiskey
The challenging nature of change is well documented and adequate preparation before implementing a change initiative is critical to reducing resistance and increasing its chances of success. This article describes a service review conducted in preparation for possible change and improvement at an internationally ranked school of nursing and midwifery in an Irish tertiary education institution. The purpose of the review was to examine organisational structures and work activities, including pressures facing the administrative team that supports the school, and to establish whether operations were fit for purpose and capable of continuing to support the international ranking...
May 22, 2018: Nursing Management (Harrow)
https://www.readbyqxmd.com/read/29786970/density-functional-theory-calculations-revealing-metal-like-band-structures-for-ultrathin-ge-111-and-211-surface-layers
#2
Chih-Shan Tan, Michael Hsuan-Yi Huang
To find out if germanium should also possess facet-dependent electrical conductivity properties, surface state density functional theory (DFT) calculations were performed on 1-6 layers of Ge (100), (110), (111), and (211) planes. Tunable Ge (100) and (110) planes always present the same semiconducting band structure with a band gap of 0.67 eV expected of bulk germanium. In contrast, 1, 2, 4, and 5 layers of Ge (111) and (211) plane models show metal-like band structures with continuous density of states (DOS) throughout the entire band...
May 21, 2018: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/29786968/p62-mediated-autophagy-affects-nutrition-dependent-insulin-receptor-substrate-1-dynamics-in-3t3-l1-preadipocytes
#3
Hirobumi Igawa, Akihiro Kikuchi, Hirofumi Misu, Kiyo-Aki Ishii, Shuichi Kaneko, Toshinari Takamura
AIMS/INTRODUCTION: Previous studies have shown that the organism's nutritional status changes the protein levels of insulin receptor substrate 1 (IRS-1) in a tissue-specific manner. Although the mechanisms underlying the regulation of IRS-1 in the nutrient-rich conditions associated with diabetes and insulin resistance have been well studied, those under nutrient-poor conditions remain unknown. The aim of this study was to investigate how IRS-1 protein levels change depending on the nutritional status of 3T3-L1 preadipocytes...
May 22, 2018: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/29786966/controlled-selectivity-of-co-2-reduction-on-copper-by-pulsing-the-electrochemical-potential
#4
Kevin W Kimura, Kevin E Fritz, Jiyoon Kim, Jin Suntivich, Héctor D Abruña, Tobias Hanrath
We demonstrate a simple strategy to enhance the CO2 reduction reaction (CO2 RR) selectivity by applying a pulsed electrochemical potential to a polycrystalline copper electrode. By controlling the pulse duration, we show that the hydrogen evolution reaction (HER) is highly suppressed to a fraction of the original value (<5 % faradaic efficiency) and selectivity for the CO2 RR dramatically improves (>75 % CH4 and >50 % CO faradaic efficiency). We attribute the improved CO2 RR selectivity to a dynamically rearranging surface coverage of hydrogen and intermediate species during the pulsing...
May 22, 2018: ChemSusChem
https://www.readbyqxmd.com/read/29786959/assessment-of-the-drug-interaction-potential-of-ertugliflozin-with-sitagliptin-metformin-glimepiride-or-simvastatin-in-healthy-subjects
#5
Vikas Kumar Dawra, David L Cutler, Susan Zhou, Rajesh Krishna, Haihong Shi, Yali Liang, Christine Alvey, Anne Hickman, Didier Saur, Steven G Terra, Vaishali Sahasrabudhe
Ertugliflozin, a sodium-glucose cotransporter 2 inhibitor for the treatment of adults with type 2 diabetes mellitus, is expected to be coadministered with sitagliptin, metformin, glimepiride, and/or simvastatin. Four separate open-label, randomized, single-dose, crossover studies were conducted in healthy adults to assess the potential pharmacokinetic interactions between ertugliflozin 15 mg and sitagliptin 100 mg (n = 12), metformin 1000 mg (n = 18), glimepiride 1 mg (n = 18), or simvastatin 40 mg (n = 18)...
May 22, 2018: Clinical Pharmacology in Drug Development
https://www.readbyqxmd.com/read/29786956/rho-kinase-and-protein-kinase-c-pathways-are-responsible-for-enhanced-carbachol-contraction-in-permeabilized-detrusor-in-a-rat-model-of-cystitis
#6
Merve Denizalti, N Tugba Durlu-Kandilci, G Simsek, T Emrah Bozkurt, Inci Sahin-Erdemli
Interstitial cystitis is a syndrome characterized by detrusor overactivity and chronic inflammation of the bladder. The mechanisms responsible for the altered smooth muscle contractility remain poorly understood. The aim of the study was to investigate the role of intracellular signalling pathways in carbachol-induced detrusor contraction in a rat model of interstitial cystitis. Cyclophosphamide (150 mg/kg, dissolved in saline) was injected to rats (Sprague-Dawley, female, 200-250 g) intraperitoneally once a day on days 1, 4 and 7 to induce interstitial cystitis...
May 22, 2018: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29786939/an-update-on-enzymatic-cocktails-for-lignocellulose-breakdown
#7
REVIEW
Andreza de Mello Lopes, Edivaldo Ximenes Ferreira Filho, Leonora Rios de Souza Moreira
Alternative energy sources have received increasing attention in recent years. The possibility of adding value to agricultural wastes, by producing biofuels and other products with economic value from lignocellulosic biomass by enzymatic hydrolysis, has been widely explored. Lignocellulosic biomass, as well as being an abundant residue, is a complex recalcitrant structure that requires a consortium of enzymes for its complete degradation. Pools of enzymes with different specificities acting together usually produce an increase in hydrolysis yield...
May 22, 2018: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/29786930/an-unexpected-%C3%AE-oxidation-of-cyclic-ketones-with-1-4-benzoquinone-via-enol-catalysis
#8
Benjamin List, Grigory A Shevchenko, Barry Oppelaar
The single electron oxidation of enamines is a well-established activation mode for organocatalytic enantioselective α-functionalizations of simple aldehydes and ketones.[1] Due to the intrinsic limitations of enamine catalysis, the oxidation of the corresponding α-branched ketones has so far not been reported. Herein we disclose the first direct and asymmetric α-aryloxylation of cyclic ketones via enol catalysis, using quinones as the reaction partner. Catalytic amounts of a phosphoric acid promote the exclusive formation of α,α-disubstituted ketones from the corresponding α-substituted ketones in good yields and enantioselectivities (up to 96...
May 22, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29786924/reproductive-ecology-of-ocotea-catharinensis-an-endangered-tree-species
#9
Tiago Montagna, Juliano Zago da Silva, Tiago Georg Pickart, Maurício Sedrez Dos Reis
Ocotea catharinensis (Lauraceae) is an endangered tree species from the Brazilian Atlantic Rainforest. Currently, little is known about the reproductive ecology of this species. Aiming to propose conservation measures, we described aspects related to phenology, floral biology, pollination, seed dispersal, and mating system of O. catharinensis. We conducted phenological observations in 62 individuals for two years. In one reproductive event, we evaluated nectar production, stigmatic receptivity, and pollen viability...
May 22, 2018: Plant Biology
https://www.readbyqxmd.com/read/29786917/a-strategy-of-self-isolated-enhanced-emission-to-achieve-highly-emissive-dual-state-emission-for-organic-luminescent-materials
#10
Yanzi Xu, Lin Ren, Dongfeng Dang, Ying Zhi, Xiaochi Wang, Lingjie Meng
Currently, the commonly developed organic luminescent materials (OLMs) usually exhibit poor luminescent performance in aggregated solid states compared with their well-dissolved solution states, making it a tough goal to achieve the highly emissive dual-state emission. To overcome this limitation, "Self-Isolated Enhanced Emission" (SIEE) strategy through flexible alkyl chains to suppress the emission-quenched π-π stacking in solids is proposed here and based on this guideline, remarkable emission efficiency with photoluminescence quantum yields up to 99...
May 22, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29786916/herbal-medicine-as-a-promising-therapeutic-approach-for-the-management-of-vascular-dementia-a-systematic-literature-review
#11
REVIEW
Adel Ghorani-Azam, Samaneh Sepahi, Elham Khodaverdi, Seyed Ahmad Mohajeri
Vascular dementia (VaD) generally refers to memory deficits and cognitive abnormalities that are resulted from vascular disease. In this study, we aimed to systematically review the literature wherein therapeutic effects of medicinal plants have been studied on VaD. A systematic literature search was performed in the PubMed, Scopus, Web of Science, Google Scholar, and other databases using VaD, and medicinal plants as key terms. No strict inclusion criteria were defined, and almost all clinical studies were included...
May 22, 2018: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/29786911/esipt-modulated-emission-of-lanthanide-complexes-different-energy-transfer-pathway-and-multi-responses
#12
Si-Si Sun, Zheng Wang, Xiang Wen Wu, Jian-Hua Zhang, Chao-Jie Li, Shao-Yun Yin, Ling Chen, Mei Pan, Cheng-Yong Su
Two series of isostructural lanthanide coordination complexes, namely, LIFM-42(Ln), Ln = Eu, Tb, Gd, and LIFM-43(Ln), Ln = Er, Yb) were synthesized through the self-assembly of an ESIPT (excited-state intramolecular proton transfer) ligand, H2hpi2cf (5-(2-(5-fluoro-2-hydroxyphenyl)-4,5-bis(4-fluorophenyl)-1H-imidazol-1-yl)isophthalic acid) with different lanthanide ions. In the coordination structures linked by the ligands and oxo-bridged LnIII2 clusters (for LIFM-42(Ln) series) or isolated LnIII ions (for LIFM-43(Ln) series), the ESIPT ligand can serve as both the host and antenna for protecting and sensitizing the photoluminescence (PL) of LnIII ions...
May 22, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29786903/copper-catalyzed-allylic-c-h-alkynylation-via-cross-dehydrogenative-coupling
#13
Ahmad A Almasalma, Esteban Mejía
C-H bond functionalization is a well-developed concept that has been thoroughly studied and gives entry to rather complex molecules without the need of previous derivatization of the substrates, although the use of copper complexes for allylic C-H bond functionalization under oxidative conditions as an alternative to the well-established palladium-based methodologies remains largely underdeveloped. Here we show for the first time a selective cross-dehydrogenative coupling reaction between underivatized allylic substrates and terminal alkynes to produce 1,4-enynes in high yields in a single step, using an in situ synthesized copper catalyst and an oxidant...
May 22, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29786900/avian-demographic-responses-to-drought-and-fire-a-community-level-perspective
#14
James F Saracco, Stephen M Fettig, George L San Miguel, David W Mehlman, Steven K Albert
Drought stress is an important consideration for wildlife in arid and semi-arid regions under climate change. Drought can impact plant and animal populations directly, through effects on their physiology, as well as indirectly through effects on vegetation productivity and resource availability, and by creating conditions conducive to secondary disturbance, such as wildfire. We implemented a novel approach to understanding community-level demographic responses of birds and their habitats to these stressors in the context of climate change at 14 study sites in the Four Corners region of the southwestern United States...
May 22, 2018: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/29786899/improved-stable-indocyanine-green-icg-mediated-cancer-optotheranostics-with-naturalized-hepatitis-b-core-particles
#15
Wenjun Shan, Ronghe Chen, Qiang Zhang, Jie Zhao, Binbin Chen, Xi Zhou, Shefang Ye, Shengli Bi, Liming Nie, Lei Ren
In recent years, hepatitis B core protein virus-like particle (HBc VLP) is an impressive biomaterial, which has attracted considerable attention due to favorable properties such as structural stability, high uptake efficiency, and biocompatibility in biomedical applications. Heretofore, only a few attempts have been made to apply it in physical, chemical, and biological therapy for cancer. In this study, a tumor-targeting RGD-HBc VLP is first fabricated through genetic engineering. For image-guided cancer phototherapy, indocyanine green (ICG) is loaded into RGD-HBc VLP via a disassembly/reassembly pathway and electrostatic attraction with high efficiency...
May 22, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29786892/association-between-initial-age-of-exposure-to-childhood-abuse-and-cognitive-control-preliminary-evidence
#16
Kristen L Mackiewicz Seghete, Anne P DePrince, Marie T Banich
Cognitive control, which relies on the protracted development of frontal-parietal regions into adolescence, is a brain process that may be particularly vulnerable to the impact of childhood abuse. In this study, we used functional magnetic resonance imaging (fMRI) to examine associations between the age of onset of childhood abuse and alterations to the neural mechanisms supporting cognitive control in early adulthood, which have not been previously examined. During fMRI scanning, participants completed hybrid block/event-related versions of a classic color-word Stroop task as well as emotional Stroop tasks (threat and positive words)...
May 22, 2018: Journal of Traumatic Stress
https://www.readbyqxmd.com/read/29786889/a-novel-conductive-mesoporous-layer-with-a-dynamic-two-step-deposition-strategy-boosts-efficiency-of-perovskite-solar-cells-to-20
#17
Haoxuan Sun, Kaimo Deng, Yayun Zhu, Min Liao, Jie Xiong, Yanrong Li, Liang Li
Lead halide perovskite solar cells (PSCs) with the high power conversion efficiency (PCE) typically use mesoporous metal oxide nanoparticles as the scaffold and electron-transport layers. However, the traditional mesoporous layer suffers from low electron conductivity and severe carrier recombination. Here, antimony-doped tin oxide nanorod arrays are proposed as novel transparent conductive mesoporous layers in PSCs. Such a mesoporous layer improves the electron transport as well as light utilization. To resolve the common problem of uneven growth of perovskite on rough surface, the dynamic two-step spin coating strategy is proposed to prepare highly smooth, dense, and crystallized perovskite films with micrometer-scale grains, largely reducing the carrier recombination ratio...
May 22, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29786888/injectable-bioresponsive-gel-depot-for-enhanced-immune-checkpoint-blockade
#18
Shuangjiang Yu, Chao Wang, Jicheng Yu, Jinqiang Wang, Yue Lu, Yuqi Zhang, Xudong Zhang, Quanyin Hu, Wujin Sun, Chaoliang He, Xuesi Chen, Zhen Gu
Although cancer immunotherapy based on immune checkpoint inhibitors holds great promise toward many types of cancers, several challenges still remain, associated with low objective response of patient rate as well as systemic side effects. Here, a combination immunotherapy strategy is developed based on a thermogelling reactive oxygen species (ROS)-responsive polypeptide gel for sustained release of anti-programmed cell death-ligand 1 antibody and dextro-1-methyl tryptophan, inhibitor of indoleamine-2,3-dioxygenase with leveraging the ROS level in the tumor microenvironment...
May 22, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29786887/perovskite-solar-cells-with-inorganic-electron-and-hole-transport-layers-exhibiting-long-term-%C3%A2-500-h-stability-at-85-%C3%A2-c-under-continuous-1-sun-illumination-in-ambient-air
#19
Seongrok Seo, Seonghwa Jeong, Changdeuck Bae, Nam-Gyu Park, Hyunjung Shin
Despite the high power conversion efficiency (PCE) of perovskite solar cells (PSCs), poor long-term stability is one of the main obstacles preventing their commercialization. Several approaches to enhance the stability of PSCs have been proposed. However, an accelerating stability test of PSCs at high temperature under the operating conditions in ambient air remains still to be demonstrated. Herein, interface-engineered stable PSCs with inorganic charge-transport layers are shown. The highly conductive Al-doped ZnO films act as efficient electron-transporting layers as well as dense passivation layers...
May 22, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29786884/bone-morbidity-and-recovery-in-children-with-acute-lymphoblastic-leukemia-results-of-a-six-year-prospective-cohort-study
#20
Leanne M Ward, Jinhui Ma, Bianca Lang, Josephine Ho, Nathalie Alos, Mary Ann Matzinger, Nazih Shenouda, Brian Lentle, Jacob L Jaremko, Beverly Wilson, David Stephure, Robert Stein, Anne Marie Sbrocchi, Celia Rodd, Victor Lewis, Sara Israels, Ronald M Grant, Conrad V Fernandez, David B Dix, Elizabeth A Cummings, Robert Couch, Elizabeth Cairney, Ronald Barr, Sharon Abish, Stephanie A Atkinson, John Hay, Frank Rauch, David Moher, Kerry Siminoski, Jacqueline Halton
Osteoporotic fractures are a significant cause of morbidity in acute lymphoblastic leukemia (ALL). Our objective was to determine the incidence and predictors of fractures and recovery from osteoporosis in pediatric ALL over 6 years following glucocorticoid initiation. Vertebral fractures (VF) and vertebral body reshaping were assessed on annual spine radiographs, low-trauma non-VF were recorded at regular intervals and spine bone mineral density (BMD) was captured every 6 months for 4 years and then annually...
May 22, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
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