keyword
MENU ▼
Read by QxMD icon Read
search

Modified

keyword
https://www.readbyqxmd.com/read/28088122/a-comparative-study-on-the-effects-of-ultrathin-luminescent-graphene-oxide-quantum-dot-goqd-and-graphene-oxide-go-nanosheets-on-the-interfacial-interactions-and-mechanical-properties-of-an-epoxy-composite
#1
B Karimi, B Ramezanzadeh
The reinforcement effect of graphene oxide nanosheets on the mechanical properties of an epoxy coating has been extensively studied. However, the effect of graphene oxide quantum dot (GOQD) as a new unique carbon based nanomaterial (with lateral dimension of 5-6nm and thickness of one carbon atom) on the mechanical properties of epoxy coating has not been reported and compared with GO yet. So this study aims at fabrication of a high-performance polymer composite with unique mechanical properties using GOQD nanosheets...
January 5, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28088117/adsorption-of-phosphate-from-aqueous-solution-using-iron-zirconium-modified-activated-carbon-nanofiber-performance-and-mechanism
#2
Weiping Xiong, Jing Tong, Zhaohui Yang, Guangming Zeng, Yaoyu Zhou, Dongbo Wang, Peipei Song, Rui Xu, Chen Zhang, Min Cheng
Phosphate (P) removal is significant for the prevention of eutrophication in natural waters. In this paper, a novel adsorbent for the removal of P from aqueous solution was synthesized by loading zirconium oxide and iron oxide onto activated carbon nanofiber (ACF-ZrFe) simultaneously. The adsorbent was characterized by scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy and X-ray photoelectron spectroscopy (XPS). The results showed that P adsorption was highly pH dependent and the optimum pH was found to be 4...
January 7, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28088116/upconversion-color-tuning-in-ce-3-doped-liyf4-yb-3-ho-3-liyf4-nanoparticles-towards-ratiometric-fluorescence-detection-of-chromium-iii
#3
Shijiang Liu, Yangjie Li, Cheng Zhang, Liang Yang, Tingting Zhao, Ruilong Zhang, Changlong Jiang
Ratiometric fluorescence sensor exhibits advantages of sensitive response, high anti-interference ability and naked eye visualization owing to multiple independent emission peaks utilized for results analysis. To achieve such multi-emission probe, the traditional methods have involved simple mixing of two emitters or tedious synthesis processes of hybrid material. However, these probes often have problems of inconstant emission strength ratio, low light-stability, and complicated synthetic process, which limit their applications in practical field...
January 7, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28088103/chemically-enzymatic-synthesis-of-photosensitive-dna
#4
Kinga Westphal, Magdalena Zdrowowicz, Agnieszka Zylicz-Stachula, Janusz Rak
The sensitizing propensity of radio-/photosensitizing nucleoside depends on DNA sequence surrounding a sensitizer. Therefore, in order to compare sensitizers with regard to their ability to induce a DNA damage one has to study the sequence dependence of damage yield. However, chemical synthesis of oligonucleotides labeled with sensitizing nucleosides is hindered due to the fact that a limited number of such nucleoside phosphoramidites are accessible. Here, we report on a chemically-enzymatic method, employing a DNA polymerase and ligase, that enables a modified nucleoside, in the form of its 5'-triphosphate, to be incorporated into DNA fragment in a pre-determined site...
January 5, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28088046/application-of-acid-modified-polyurethane-foam-surface-for-detection-and-removing-of-organochlorine-pesticides-from-wastewater
#5
E A Moawed, A M Radwan
The commercial polyurethane foam was acid modified to get an inexpensive adsorbent (AM-PUF) has highly surface polarity and sorption capacity. The elemental analysis, scanning electron microscopy, thermal analysis, ultraviolet/visible/infrared spectroscopies and X-ray diffraction were used for characterization of AM-PUF. The surface of AM-PUF has amorphous character (broadband at 2θ, 21.75°) and contains several active sites e.g. NH, OH, CO, CC and COC groups. The electrical conductivity (σ), iodine value and methylene blue index of AM-PUF are 1...
January 7, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28088010/challenges-and-opportunities-for-improving-food-quality-and-nutrition-through-plant-biotechnology
#6
REVIEW
David Francis, John J Finer, Erich Grotewold
Plant biotechnology has been around since the advent of humankind, resulting in tremendous improvements in plant cultivation through crop domestication, breeding and selection. The emergence of transgenic approaches involving the introduction of defined DNA sequences into plants by humans has rapidly changed the surface of our planet by further expanding the gene pool used by plant breeders for plant improvement. Transgenic approaches in food plants have raised concerns on the merits, social implications, ecological risks and true benefits of plant biotechnology...
January 11, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/28087990/the-modification-of-onsager-reaction-field-and-its-application-on-spectral-parameters
#7
Xinyu Wang, Rina Dao, Jia Yao, De Peng, Haoran Li
Solvent polarity is an important solvent property. The Onsager's theory of reaction field was the most classic model to describe the solvent effects and was widely used in relating dielectric constant and other solvent polarity parameters. In this study, a modified semi-empirical reaction field was presented to relate electron transition energies or hyperfine coupling constants with the dielectric constants of solvents. In previous works, this relationship was well established by traditional Onsager reaction field for non-hydrogen bonding systems but failed for hydrogen bonding systems...
January 14, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28087880/direct-synthesis-of-highly-designable-hybrid-metal-hydroxide-nanosheets-using-tripodal-ligands-as-one-size-fits-all-modifiers
#8
Yoshiyuki Kuroda, Tatsuyuki Koichi, Keisuke Muramatsu, Kazuya Yamaguchi, Noritaka Mizuno, Atsushi Shimojima, Hiroaki Wada, Kazuyuki Kuroda
Brucite-type layered metal hydroxides are prepared from diverse metallic elements and have outstanding functions; however, their poor intercalation ability significantly limits their chemical designability and the use of their potentially ultrahigh surface areas and unique properties as two-dimensional nanosheets. Here, we demonstrate that tripodal ligands (R-C(CH2OH)3, R = NH2, CH2OH, or NHC2H4SO3H) are useful as "one-size-fits-all" modifiers for the direct synthesis of hybrid metal hydroxide nanosheets with various constituent metallic elements (M = Mg, Mn, Fe, Co, Ni, or Cu) and surface functional groups...
January 14, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28087864/drug-induced-weight-gain-rethinking-our-choices
#9
REVIEW
Katherine H Saunders, Leon I Igel, Alpana P Shukla, Louis J Aronne
Weight gain secondary to medications is a potentially modifiable risk. Here's how to optimize drug choices for patients with several common conditions.
November 2016: Journal of Family Practice
https://www.readbyqxmd.com/read/28087823/prognosis-of-carotid-dissecting-aneurysms-results-from-cadiss-and-a-systematic-review
#10
Susanna C Larsson, Alice King, Jeremy Madigan, Christopher Levi, John W Norris, Hugh S Markus
OBJECTIVE: To determine the natural history of dissecting aneurysm (DA) and whether DA is associated with an increased recurrent stroke risk and whether type of antithrombotic drugs (antiplatelets vs anticoagulants) modifies the persistence or development of DA. METHODS: We included 264 patients with extracranial cervical artery dissection (CAD) from the Cervical Artery Dissection in Stroke Study (CADISS), a multicenter prospective study that compared antiplatelet with anticoagulation therapy...
January 13, 2017: Neurology
https://www.readbyqxmd.com/read/28087821/selection-of-first-line-therapy-in-multiple-sclerosis-using-risk-benefit-decision-analysis
#11
David Bargiela, Matthew T Bianchi, M Brandon Westover, Lori B Chibnik, Brian C Healy, Philip L De Jager, Zongqi Xia
OBJECTIVE: To integrate long-term measures of disease-modifying drug efficacy and risk to guide selection of first-line treatment of multiple sclerosis. METHODS: We created a Markov decision model to evaluate disability worsening and progressive multifocal leukoencephalopathy (PML) risk in patients receiving natalizumab (NTZ), fingolimod (FGL), or glatiramer acetate (GA) over 30 years. Leveraging publicly available data, we integrated treatment utility, disability worsening, and risk of PML into quality-adjusted life-years (QALYs)...
January 13, 2017: Neurology
https://www.readbyqxmd.com/read/28087763/circadian-kinetics-of-cell-cycle-progression-in-adult-neurogenic-niches-of-a-diurnal-vertebrate
#12
Veronica Akle, Alexander J Stankiewicz, Vasili Kharchenko, Lili Yu, Peter V Kharchenko, Irina V Zhdanova
: The circadian system may regulate adult neurogenesis via intracellular molecular clock mechanisms or by modifying the environment of neurogenic niches, with daily variation in growth factors or nutrients depending on the animal's diurnal or nocturnal life-style. In a diurnal vertebrate, zebrafish, we studied circadian distribution of immunohistochemical markers of the cell division cycle (CDC) in five of the sixteen neurogenic niches of adult brain, the dorsal telencephalon, habenula, preoptic area, hypothalamus and cerebellum...
January 13, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28087720/a-liminal-stage-after-predictive-testing-for-huntington-disease
#13
Marcela Gargiulo, Sophie Tezenas du Montcel, Marie France Jutras, Ariane Herson, Cecile Cazeneuve, Alexandra Durr
BACKGROUND: Following predictive testing for Huntington disease (HD), knowledge of one's carrier status may have consequences on disease onset. Our study aimed to address two questions. First, does knowledge of being a carrier of the pathological HD mutation trigger onset of the disease? Second, does this knowledge influence self-awareness and allow carriers to identify signs and symptoms of disease onset? METHODS: Between 2012 and 2015, 75 HD mutation carriers were examined using the Unified Huntington's Disease Rating Scale (UHDRS) motor score...
January 13, 2017: Journal of Medical Genetics
https://www.readbyqxmd.com/read/28087710/targeting-argonaute-to-chromatin
#14
Jered M Wendte, Craig S Pikaard
In many eukaryotes, siRNAs bound to Argonaute proteins guide chromatin-modifying enzymes to complementary loci, resulting in transcriptional gene silencing. Multiple lines of evidence indicate that siRNAs base-pair with longer RNAs produced at target loci, but the possibility that siRNAs base-pair directly with DNA remains an attractive hypothesis. In a recent study, Shimada et al. (pp. 2571-2580) conducted experiments that address these alternative hypotheses, yielding additional evidence that fission yeast siRNA-Argonaute silencing complexes are recruited to target loci exclusively via interactions with nascent transcripts...
December 15, 2016: Genes & Development
https://www.readbyqxmd.com/read/28087697/development-of-high-affinity-and-high-specificity-inhibitors-of-metalloproteinase-14-through-computational-design-and-directed-evolution
#15
Valeria Arkadash, Gal Yosef, Jason Shirian, Itay Cohen, Yuval Horev, Moran Grossman, Irit Sagi, Evette S Radisky, Julia M Shifman, Niv Papo
Degradation of the extracellular matrices in the human body is controlled by matrix metalloproteinases (MMPs), a family of more than 20 homologous enzymes. Imbalance in MMP activity can result in many diseases, such as arthritis, cardiovascular diseases, neurological disorders, fibrosis, and cancers. Thus, MMPs present attractive targets for drug design and have been a focus for inhibitor design for as long as three decades. Yet, to date, all MMP inhibitors have failed in clinical trials because of their broad activity against numerous MMP family members and the serious side effects of the proposed treatment...
January 13, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28087661/disturbance-by-an-endemic-rodent-in-an-arid-shrubland-is-a-habitat-filter-effects-on-plant-invasion-and-taxonomical-functional-and-phylogenetic-community-structure
#16
Víctor M Escobedo, Rodrigo S Rios, Cristian Salgado-Luarte, Gisela C Stotz, Ernesto Gianoli
BACKGROUND AND AIMS: Disturbance often drives plant invasion and may modify community assembly. However, little is known about how these modifications of community patterns occur in terms of taxonomic, functional and phylogenetic structure. This study evaluated in an arid shrubland the influence of disturbance by an endemic rodent on community functional divergence and phylogenetic structure as well as on plant invasion. It was expected that disturbance would operate as a habitat filter favouring exotic species with short life cycles...
January 12, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28087656/conspecific-aggregations-mitigate-the-effects-of-ocean-acidification-on-calcification-of-the-coral-pocillopora-verrucosa
#17
Nicolas R Evensen, Peter J Edmunds
In densely populated communities, such as coral reefs, organisms can modify the physical and chemical environment for neighbouring individuals. We tested the hypothesis that colony density (12 colonies each placed∼0.5 cm apart versus∼8 cm apart) can modulate the physiological response (measured through rates of calcification, photosynthesis, and respiration in the light and dark) of the coral Pocillopora verrucosa to pCO2 treatments (∼ 400 µatm and∼1200 µatm) by altering the seawater flow regimes experienced by colonies placed in aggregations within a flume at a single flow speed...
January 13, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28087654/effects-of-external-strain-on-the-regulation-of-microtubule-sliding-induced-by-outer-arm-dynein-of-sea-urchin-sperm-flagella
#18
Hiroshi Yoke, Chikako Shingyoji
Oscillatory bending movement of eukaryotic flagella is powered by orchestrated activity of dynein motor proteins that hydrolyze ATP and produce microtubule sliding. Although the ATP concentration within a flagellum is kept uniform at a few mmol l(-1) level, sliding activities of dyneins are dynamically coordinated along the flagellum in accordance with the phase of bending waves. Thus, at the organellar level the dynein not only generates force for bending but also modulates its motile activity by responding to bending of the flagellum...
January 13, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28087629/jmjd2c-kdm4c-facilitates-the-assembly-of-essential-enhancer-protein-complexes-at-the-onset-of-embryonic-stem-cell-differentiation
#19
Rute A Tomaz, Jennifer L Harman, Donja Karimlou, Lauren Weavers, Lauriane Fritsch, Tony Bou-Kheir, Emma Bell, Ignacio Del Valle Torres, Kathy K Niakan, Cynthia Fisher, Onkar Joshi, Hendrik G Stunnenberg, Edward Curry, Slimane Ait-Si-Ali, Helle F Jørgensen, Véronique Azuara
Jmjd2/Kdm4 H3K9-demethylases cooperate in promoting mouse embryonic stem cell (ESC) identity. However, little is known about their importance at the exit of ESC pluripotency. Here, we uncover that Jmjd2c facilitates this process by stabilizing the assembly of Mediator-Cohesin complexes at lineage-specific enhancers. Functionally, we show that Jmjd2c is required in ESCs to initiate appropriate gene expression programs upon somatic multi-lineage differentiation. In the absence of Jmjd2c, differentiation is stalled at an early post-implantation epiblast-like stage, while Jmjd2c-knockout ESCs remain capable of forming extra-embryonic endoderm derivatives...
January 13, 2017: Development
https://www.readbyqxmd.com/read/28087576/circulating-modified-metabolites-and-a-risk-of-esrd-in-patients-with-type-1-diabetes-and-chronic-kidney-disease
#20
Monika A Niewczas, Anna V Mathew, Stephanie Croall, Jaeman Byun, Melissa Major, Venkatta S Sabisetti, Adam Smiles, Joseph V Bonventre, Subramaniam Pennathur, Andrzej S Krolewski
OBJECTIVE: Patients with type 1 diabetes (T1D) with impaired renal function are at increased risk for end-stage renal disease (ESRD). Although the rate of progression varies, determinants and mechanisms of this variation are unknown. RESEARCH DESIGN AND METHODS: We examined serum metabolomic profiles associated with variation in renal function decline in participants with T1D (the Joslin Kidney Study prospective cohort). One hundred fifty-eight patients with proteinuria and chronic kidney disease stage 3 were followed for a median of 11 years to determine estimated glomerular filtration rate slopes from serial measurements of serum creatinine and to ascertain time to onset of ESRD...
January 13, 2017: Diabetes Care
keyword
keyword
38324
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"