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https://www.readbyqxmd.com/read/29775818/carbon-aerogel-based-supercapacitors-modified-by-hummers-oxidation-method
#1
Yuelong Xu, Bin Ren, Shasha Wang, Lihui Zhang, Zhenfa Liu
Carbon aerogels of an inter-connected three-dimensional (3D) structure are a potential carbon material for supercapacitors. We report a new oxidation modification method to prepare a series of modified carbon aerogels (OM-CA) by Hummers oxidation method. Oxidation-modified carbon aerogels (OM-CA) are obtained from carbon aerogel powders oxidized by Hummers method. Sulfuric acid stoichiometry is studied in order to investigate the effect of the surface oxygen group on surface area and electrochemical performance...
May 14, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29757679/teaching-slaughter-mapping-changes-in-emotions-in-veterinary-students-during-training-in-humane-slaughter
#2
Michiel H Hulsbergen, Petra Y Dop, Johannes C M Vernooij, Sara A Burt
As part of their training, Dutch veterinary students learn how to carry out the humane slaughter of livestock, which many students consider emotionally challenging. The aims of this study were to plot changes in self-reported emotions in veterinary students at different time points during an educational program on humane slaughter using emotion cards and to assess the change in reported emotions after adding a video and a short period of self-reflection to the program. Emotions were mapped in five groups of students at the beginning, middle, and end of the program by asking them to select from 40 cards depicting emotions in photo and text...
May 14, 2018: Journal of Veterinary Medical Education
https://www.readbyqxmd.com/read/29741284/novel-approach-to-estimate-osteoarthritis-progression-use-of-the-reliable-change-index-in-the-evaluation-of-joint-space-loss
#3
Camille Parsons, Andrew Judge, Kirsten Leyland, Olivier Bruyère, Florence Petit Dop, Roland Chapurlat, Jean-Yves Reginster, Mark Edwards, Elaine Dennison, Cyrus Cooper, Hazel Inskip
OBJECTIVE: Osteoarthritis-related changes in joint space measurements over time are small and sensitive to measurement error. The Reliable Change (RC) index determines whether the magnitude of change observed in an individual can be attributed to true change. This study aimed to examine the RC index as a novel approach to estimating osteoarthritis progression. METHODS: Data from 167 men and 392 women with knee osteoarthritis (diagnosed using the ACR criteria) randomised to the placebo arm of the 3-year Strontium Ranelate Efficacy in Knee Osteoarthritis triAl (SEKOIA) and assessed annually...
May 9, 2018: Arthritis Care & Research
https://www.readbyqxmd.com/read/29734787/production-of-antigen-binding-fragment-against-o-o-diethyl-organophosphorus-pesticides-and-molecular-dynamics-simulations-of-antibody-recognition
#4
Zi-Jian Chen, Xuan Zhang, Bing-Feng Wang, Mei-Fang Rao, Hong Wang, Hong-Tao Lei, Hui Liu, Yan Zhang, Yuan-Ming Sun, Zhen-Lin Xu
Immunoassay for pesticides is an emerging analytical method since it is rapid, efficient, sensitive, and inexpensive. In this study, a recombinant antigen-binding fragment (Fab) against a broad set of O , O -diethyl organophosphorus pesticides (DOPs) was produced and characterized. The κ chain and Fd fragment were amplified via PCR and inserted into the vector pComb3XSS and the soluble Fab on phagemid pComb3XSS was induced by isopropyl β -d-thiogalactoside in E. coli TOP 10F’. SDS-PAGE, Western blotting, and indirect competitive ELISA results indicated that Fab maintained the good characteristics of the parental mAb...
May 6, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29724338/significant-activities-of-extracellular-enzymes-from-a-brown-tide-in-the-coastal-waters-of-qinhuangdao-china
#5
Linjian Ou, Xiaohong Liu, Jingjing Li, Xianling Qin, Lei Cui, Songhui Lu
Brown tides of Aureococcus anophagefferens have occurred annually in the coastal waters of Qinhuangdao since 2009. High levels of dissolved organic matter (DOM) are always measured during bloom periods. Study focusing on the effect of DOM on the occurrences of brown tides in this area is scare by far. To analyze the efficiency of DOM hydrolysis by different groups of microorganisms and the possible influence of DOM on the formation of brown tides, extracellular enzymes such as α, β-glucosidases (α, β-GLUs), leucine aminopeptidase (LAP) and alkaline phosphatase (AP) as well as other environmental parameters were analyzed during a pre-bloom period of A...
April 2018: Harmful Algae
https://www.readbyqxmd.com/read/29715585/on-the-interaction-of-the-highly-charged-peptides-casocidins-with-biomimetic-membranes
#6
Lucia Becucci, Giovanni Aloisi, Andrea Scaloni, Simonetta Caira, Rolando Guidelli
Casocidin I and II (CI and CII) are structurally related antimicrobial peptides made of 39 and 31 amino acids, respectively, which derive from natural proteolytic processing of αs2 -casein and adopt an ordered α-helical structure in biomimetic membranes. Their putative membrane-permeabilizing activity was investigated at Hg-supported self-assembled monolayers (SAMs) and at tethered bilayer lipid membranes (tBLMs); the latter consisted of a monolayer of 2,3,di-O-phytanyl-sn-glycerol-1-tetraethylene-glycol-d,l-α lipoic acid ester thiolipid (DPTL), with a dioleoylphosphatidylcholine (DOPC) or dioleoylphosphatidylserine (DOPS) monolayer on top of it...
April 19, 2018: Bioelectrochemistry
https://www.readbyqxmd.com/read/29694868/vesicle-adhesion-and-fusion-studied-by-small-angle-x-ray-scattering
#7
Karlo Komorowski, Annalena Salditt, Yihui Xu, Halenur Yavuz, Martha Brennich, Reinhard Jahn, Tim Salditt
We have studied the adhesion state (also denoted by docking state) of lipid vesicles as induced by the divalent ions Ca2+ or Mg2+ at well-controlled ion concentration, lipid composition, and charge density. The bilayer structure and the interbilayer distance in the docking state were analyzed by small-angle x-ray scattering. A strong adhesion state was observed for DOPC:DOPS vesicles, indicating like-charge attraction resulting from ion correlations. The observed interbilayer separations of ∼1.6 nm agree quantitatively with the predictions of electrostatics in the strong coupling regime...
April 24, 2018: Biophysical Journal
https://www.readbyqxmd.com/read/29679156/phthalates-removal-efficiency-in-different-wastewater-treatment-technology-in-the-eastern-cape-south-africa
#8
Taofeek Salaudeen, Omobola Okoh, Foluso Agunbiade, Anthony Okoh
The removal capacity of different wastewater treatment plant (WWTP) technologies adopted in rural areas for phthalate was investigated in the Eastern Cape, South Africa. Wastewater samples collected from three selected WWTPs which use activated sludge (AS), trickling filter (TF), and oxidation pond (OP) technology were extracted using the solid-phase extraction method followed by gas chromatography-mass spectrometry (GC-MS) analysis. The six selected phthalate esters (PAEs) dimethyl phthalate (DMP), diethyl phthalate (DEP), di-n-butyl phthalate (DBP), benzyl butyl phthalate (BBP), di(2-ethyl hexyl) phthalate (DEHP), and di-n-octyl phthalate (DOP) were detected in all the samples collected from the WWTPs...
April 20, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29670910/regiospecific-analysis-of-fatty-acids-and-calculation-of-triglyceride-molecular-species-in-marine-fish-oils
#9
Huijun Zhang, Yingbin Shen, Youwei Zhang, Lirong Li, Xingguo Wang
The regiospecific distribution of fatty acids (FAs) and composition of triglyceride (TAG) molecular species of fishes were analyzed and calculated by pancreatic lipase (PL) hydrolysis and Visual Basic (VB) program. DHA was preferentially located at sn-2 position in TAG molecule, whereas EPA was almost equally distributed in each position of glycerol backbone. DOP, DPP, EPP, PoPP, PPO, and PPP were the predominant TAG species. MPP in anchovy, DDP, DOP, DPP in tuna, and EOO and OOO in salmon were the characteristic TAG molecules, which were meaningful to differentiate marine fish oils...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29626811/fate-and-impact-of-phthalates-in-activated-sludge-treated-municipal-wastewater-on-the-water-bodies-in-the-eastern-cape-south-africa
#10
Taofeek Salaudeen, Omobola Okoh, Foluso Agunbiade, Anthony Okoh
The concentration and fates of six priority phthalate esters (PAEs); dimethyl phthalate (DMP), diethyl phthalate (DEP), di-n-butyl phthalate (DBP), benzyl butyl phthalate (BBP), di (2-ethyl hexyl) phthalate (DEHP), and di-n-octyl phthalate (DOP) in wastewaters from the wastewater treatment plants (WWTPs) which adopted the activated sludge technology in the Amathole Municipality, Eastern Cape, South Africa were investigated. The six PAEs were detected in all the influents and in almost all the WWTP effluent of which DBP was the most abundant in the influent followed by DEHP...
March 28, 2018: Chemosphere
https://www.readbyqxmd.com/read/29614526/changes-in-scoring-of-direct-observation-of-procedural-skills-dops-forms-and-the-impact-on-competence-assessment
#11
Keith Siau, Paul Dunckley, Roland Valori, Mark Feeney, Neil D Hawkes, John T Anderson, Ian L P Beales, Christopher Wells, Siwan Thomas-Gibson, Gavin Johnson
BACKGROUND: Direct Observation of Procedural Skills (DOPS) is an established competence assessment tool in endoscopy. In July 2016, the DOPS scoring format changed from a performance-based scale to a supervision-based scale. We aimed to evaluate the impact of changes to the DOPS scale format on the distribution of scores in novice trainees and on competence assessment. METHODS: We performed a prospective, multicenter (n = 276), observational study of formative DOPS assessments in endoscopy trainees with ≤ 100 lifetime procedures...
April 3, 2018: Endoscopy
https://www.readbyqxmd.com/read/29602294/melatonin-ameliorates-brain-oxidative-stress-and-upregulates-senescence-marker-protein-30-and-osteopontin-in-a-rat-model-of-vascular-dementia
#12
I Bin-Jaliah, H F Sakr
The aim of this study was to investigate the effect of melatonin on oxidative stress and senescence marker protein-30 (SMP30) as well as osteopontin (OPN) expression in the hippocampus of rats subjected to vascular dementia (VD). A total of 72 male rats were divided into six groups (n = 12 each) as follows: (i) untreated control (CON), (ii) sham-operated group, (iii) sham-operated + melatonin, (iv) rats exposed to VD induced by permanent bilateral occlusion of the common carotid arteries (BCCAO) leading to chronic cerebral hypoperfusion, (v) rats exposed to VD + melatonin, and (vi) rats exposed to VD + donepezil (DON)...
March 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29587834/a-standard-photomap-of-ovarian-nurse-cell-chromosomes-and-inversion-polymorphism-in-anopheles-beklemishevi
#13
Gleb N Artemov, Mikhail I Gordeev, Alina A Kokhanenko, Anton V Moskaev, Alena I Velichevskaya, Vladimir N Stegniy, Igor V Sharakhov, Maria V Sharakhova
BACKGROUND: Anopheles beklemishevi is a member of the Maculipennis group of malaria mosquitoes that has the most northern distribution among other members of the group. Although a cytogenetic map for the larval salivary gland chromosomes of this species has been developed, a high-quality standard cytogenetic photomap that enables genomics and population genetics studies of this mosquito at the adult stage is still lacking. METHODS: In this study, a cytogenetic map for the polytene chromosomes of An...
March 27, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29575967/the-authors-reply-factors-influencing-the-educational-impact-of-mini-cex-and-dops
#14
Andrea Carolin Lörwald, Daniel Bauer, Felicitas-Maria Lahner, Robert Greif, Christoph Berendonk, John Norcini, Sören Huwendiek
No abstract text is available yet for this article.
March 26, 2018: Medical Teacher
https://www.readbyqxmd.com/read/29571392/distributions-of-particulate-and-dissolved-phosphorus-in-aquatic-habitats-of-peninsular-malaysia
#15
Joon Hai Lim, Choon Weng Lee, Chui Wei Bong, Yang Amri Affendi, Yii Siang Hii, Isao Kudo
Particulate phosphorus was the dominant phosphorus species and accounted for 72 ± 5% of total phosphorus in coastal habitats, 63 ± 4% in estuaries, 58 ± 6% in lakes and 80 ± 7% in aquaculture farms whereas dissolved inorganic phosphorus (DIP) and dissolved organic phosphorus (DOP) were minor components. Correlation analyses (DIP vs Chl a; R2  = 0.407, df = 31, p < 0.001) suggested phosphorus limiting conditions in lakes, which was corroborated with the highest alkaline phosphatase activity (APA) that fluctuated from 0...
March 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29571353/aerosol-concentrations-and-atmospheric-dry-deposition-fluxes-of-nutrients-over-daya-bay-south-china-sea
#16
Yunchao Wu, Jingping Zhang, Songlin Liu, Zhijian Jiang, Xiaoping Huang
Based on one and a half years of observations (September 2015 to March 2017) in Daya Bay, we analysed the nutrient concentrations in aerosols and calculated dry deposition fluxes of nutrients. DON was the dominant species of TDN in aerosol particles, accounting for 63.3%. The mean values of DIP, DOP and DSi were 0.78, 0.61 and 2.6 nmol·m-3 , respectively. The mean fluxes of nutrients (TDN, TDP and DSi) from dry deposition during the field observation were 2150, 7.4 and 28.2 μmol·m-2 ·month-1 , respectively...
March 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29562643/poly-vinylidene-fluoride-hexafluoropropylene-porous-membrane-with-controllable-structure-and-applications-in-efficient-oil-water-separation
#17
Xinya Wang, Changfa Xiao, Hailiang Liu, Qinglin Huang, Junqiang Hao, Hao Fu
Poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) porous membranes are fabricated via thermally induced phase separation (TIPS) with mixed diluent (dibutyl phthalate (DBP)/dioctyl phthalate (DOP)). The effects of mixed diluent are discussed in detail in term of morphology, mean pore size, selective wettability, etc. The results show that the membrane structure changes from spherulitic to bicontinuous with the change of DBP/DOP ratio. It is also found that the degree of crystallization decreases with the decrease of DBP/DOP ratio in mixed diluent...
March 18, 2018: Materials
https://www.readbyqxmd.com/read/29555308/overexpression-of-dnmt1-leads-to-hypermethylation-of-h19-promoter-and-inhibition-of-erk-signaling-pathway-in-disuse-osteoporosis
#18
Bing Li, Jie Zhao, Jian-Xiong Ma, Guo-Min Li, Yang Zhang, Guo-Sheng Xing, Jun Liu, Xin-Long Ma
Disuse osteoporosis (DOP) is a common complication of the lack of mechanical loading. The precise mechanism underlying DOP remains unknown, although epigenetic modifications may be a major cause. Recently, cumulative research has revealed that DNA methyltransferase (DNMT) proteins can catalyze the conversion of cytosine to 5-methylcytosine (5mC), altering the epigenetic state of DNA. Here, we report that DNMT1 expression and lncRNA-H19 methylation are upregulated in the femoral tissues of DOP rats, accompanied with inhibited Erk signaling pathway...
March 16, 2018: Bone
https://www.readbyqxmd.com/read/29538294/a-non-cooperative-satellite-feature-point-selection-method-for-vision-based-navigation-system
#19
Mingfeng Ning, Shijie Zhang, Shiqiang Wang
The number of feature points on the surface of a non-cooperative target satellite used for monocular vision-based relative navigation affects the onboard computational load. A feature point selection method called the quasi-optimal method is proposed to select a subset of feature points with a good geometric distribution. This method, with the assumption that all of the feature points are in a plane and have the same variance, is based on the fact that the scattered feature points can provide higher accuracy than that of them grouped together...
March 14, 2018: Sensors
https://www.readbyqxmd.com/read/29532427/development-of-domperidone-solid-lipid-nanoparticles-in-vitro-and-in-vivo-characterization
#20
Gamal A Shazly, Sultan Alshehri, Mohamed A Ibrahim, Hesham M Tawfeek, Jelan A Razik, Yasser A Hassan, Faiyaz Shakeel
Domperidone (DOP) is extensively applied orally in the management of nausea and vomiting. Upon oral administration, its bioavailability is very poor due to its poor solubility in alkaline media. Therefore, the aim of this work was to investigate DOP-loaded solid lipid nanoparticles (DOP-SLNs) in order to sustain its release pattern and to enhance oral bioavailability. DOP-SLNs were prepared using four different lipids. Prepared DOP-SLNs were characterized for "polydispersity index (PDI), particle size, zeta potential, % entrapment efficiency (% EE), and drug release behavior...
March 12, 2018: AAPS PharmSciTech
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