bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cookies elaborated with oat and common bean flours improved serum markers in diabetic rats
Authors: Pérez‐Ramírez Iza F , Becerril‐Ocampo Laura J , Reynoso‐Camacho Rosalía , Herrera Mayra D , Guzmán‐Maldonado S Horacio , Cruz‐Bravo Raquel K 
Published: July 2017

AbstractBACKGROUNDCommon beans have been associated with anti‐diabetic effects, due to its high content of bioactive compounds. Nevertheless, its consumption has decreased worldwide. Therefore, there is an increasing interest in the development of novel functional foods elaborated with common beans. The aim of this study was to evaluate the anti‐diabetic effect of oat–bean flour cookies, and to analyze its bioactive composition, using commercial oat–wheat cookies for comparative purposes.RESULTSOat‐bean cookies (1.2 g kg−1) slightly decreased serum glucose levels (∼1.1‐fold) and increased insulin levels (∼1.2‐fold) in diabetic rats, reducing the hyperglycemic peak in healthy rats (∼1.1‐fold). Oat–bean cookies (0.8 and 1.2 g kg−1) exerted a greater hypolipidemic effect than commercial oat–wheat cookies (1.2 g kg−1), as observed in decreased serum triglycerides and low‐density lipoprotein cholesterol. Furthermore, the supplementation with 1.2 g kg−1 oat–bean cookies decreased atherogenic index and serum C‐reactive protein levels, suggesting their cardioprotective potential. The beneficial effect of oat–bean cookies was associated with their high content of dietary fiber and galacto oligosaccharides, as well as chlorogenic acid, rutin, protocatechuic acid, β‐sitosterol and soyasaponins.CONCLUSIONThese results suggest that common beans can be used as functional ingredients for the elaboration of cookies with anti‐diabetic effects. © 2017 Society of Chemical Industry
Effects of short‐term heat stress at the grain formation stage on physicochemical properties of waxy maize starch
Authors: Gu Xiaotian , Huang Tianqi , Ding Mengqiu , Lu Weiping , Lu Dalei 
Published: July 2017

AbstractBACKGROUNDWaxy maize (Zea mays L. sinensis Kulesh) suffers short‐term exposure to high temperature during grain filling in southern China. The effects of such exposure are poorly understood.RESULTSStarch granule size was increased by 5 days' short‐term heat stress (35.0 °C) and the increase was higher when the stress was introduced early. Heat stress increased the iodine binding capacity of starches and no difference was observed among the three stages. Starch relative crystallinity was increased and swelling power was decreased only when heat stress was introduced early. Heat stress also increased the pasting viscosity, and this effect became more pronounced with later applications of stress. Heat stress reduced starch gelatinization enthalpy, and the reduction gradually increased with later exposures. Heat stress increased the gelatinization temperature and retrogradation enthalpy and percentage of the samples, with the increases being largest with earlier introduction of high temperature.CONCLUSIONHeat stress increased the pasting viscosities and retrogradation percentage of starch by causing change in granule size, amylopectin chain length distribution and crystallinity, and the effects observed were more severe with earlier introduction of heat stress after pollination. © 2017 Society of Chemical Industry
Determination of seven drugs of abuse and their metabolites in surface and wastewater using solid‐phase extraction coupled to liquid chromatography with high‐resolution mass spectrometry
Authors: Prosen Helena , Fontanals Núria , Borrull Francesc , Marcé Rosa Maria 
Published: July 2017

AbstractA method based on liquid chromatography with electrospray ionization high‐resolution mass spectrometry (Exactive Orbitrap) combined with solid‐phase extraction using a strong cationic exchange mixed‐mode sorbent has been developed for the determination of seven drugs of abuse, including two synthetic cathinones, as well as some of their metabolites in environmental water samples. The method provides low detection limits and a high confirmation power thanks to the diagnostic and two fragment ions monitored for each compound in high‐resolution mass spectrometry, providing six identification points for each analyte. The clean‐up step based on methanol in the extraction step adequately decreased the matrix effect, mainly for river and effluent water, and provided suitable process efficiency. Method detection and quantitation limits for environmental waters were at low nanogram per liter. The method was applied to analyze the samples of influent and effluent wastewater, as well as surface water. Codeine, methadone, and its metabolite were determined in all samples of wastewater and the metabolite of cocaine, benzoylecgonine, was found at the highest concentration.
Interactive regulations by viruses and dissolved organic matter on the bacterial community
Authors: Liu Hongbin , Tan Shangjin , Xu Jie , Guo Wang , Xia Xiaomin , Yan Cheung Shun 
Published: July 2017

AbstractViruses and dissolved organic matter (DOM) are major top–down and bottom–up factors, respectively, which control the abundance and diversity of bacterial communities. However, the relative strength and interaction between these two regulators in different marine ecosystems are not fully understood. We applied viral reduction and cross‐transplantation of eutrophic estuarine and pristine coastal waters to examine the separate and combined effects of viruses and DOM on the bacterial community composition. We showed that bacteria were more abundant in the virus‐depleted groups, particularly in those from the eutrophic estuarine water (i.e., > 7 times higher, when compared with the virus‐rich groups). Cluster analyses showed that the bacterial communities in the virus‐rich groups were most similar to the in situ populations. Bacterial community richness, evenness and diversity were reduced at high DOM concentrations but were sustained by viruses. This allowed bacteria that were less vulnerable to viral infection to thrive (such as those in the families Alteromonadaceae, Rhodobacteraceae, Flavobacteriaceae, and SAR11), while suppressing those capable of fast growth at elevated DOM concentrations but which were more vulnerable to viral attack (such as those from the family Vibrionaceae). Our results showed that viral regulation occurring at the strain level can affect the bacterial community structure at higher phylogenetic levels. In addition, some less abundant groups, such as Vibrio and Alteromonas, might actually win the competition for resources, providing viral control is removed. Our results also showed that the population dynamics of certain bacterial groups was controlled by viruses, and the strength of such control was modulated by the concentration of DOM. We suggest that the composition of the bacterial community in aquatic environments results from the interactive regulation by DOM and viruses among other regulators.
What is targeted proteomics? A concise revision of targeted acquisition and targeted data analysis in mass spectrometry
Authors: Borràs Eva , Sabidó Eduard 
Published: July 2017

AbstractTargeted proteomics has gained significant popularity in mass spectrometry‐based protein quantification as a method to detect proteins of interest with high sensitivity, quantitative accuracy and reproducibility. However, with the emergence of a wide variety of targeted proteomics methods, some of them with high‐throughput capabilities, it is easy to overlook the essence of each method and to determine what makes each of them a targeted proteomics method. In this viewpoint, we revisit the main targeted proteomics methods and classify them in four categories differentiating those methods that perform targeted data acquisition from targeted data analysis, and those methods that are based on peptide ion data (MS1 targeted methods) from those that rely on the peptide fragments (MS2 targeted methods).
Insecticide resistance of adults and nymphs of Asian citrus psyllid populations from Apatzingán Valley, Mexico
Authors: Pardo Saúl , Martínez Ana M , Figueroa José I , Chavarrieta Juan M , Viñuela Elisa , Rebollar‐Alviter Ángel , Miranda Mario A , Valle Javier , Pineda Samuel 
Published: July 2017

AbstractBACKGROUNDControl of the Asian citrus psyllid Diaphorina citri Kuwayama, the most important pest of citrus worldwide, is based on the use of insecticides, though unsatisfactory results have recently been reported. In this study, insecticide resistance of D. citri to three insecticides (bifenthrin, malathion, and chlorpyrifos) was examined.RESULTSThree populations (designated Dci‐CParácuaro, Dci‐El Junco, and Dci‐Antúnez) of both adults and fourth‐instar D. citri individuals were collected in 2014 at two different times and on one occasion, respectively, from three locations (Crucero de Parácuaro, El Junco, and Antúnez). These locations represent the major commercial Mexican lemon production areas in the Apatzingán Valley in the state of Michoacán, Mexico. The three populations of D. citri adults and fourth‐instar nymphs at the different collection times showed low levels of resistance (≤7‐fold) to bifenthrin, but were very resistant to malathion (≤345‐ and ≤432‐fold for adults and fourth instars, respectively) and chlorpyrifos (≤2435‐ and ≤1424‐fold for adults and fourth instars, respectively).CONCLUSIONResistance levels to the tested insecticides were highly variable but homogeneous among seasons and localities. Resistance management programmes that include crop sanitation, use of biological and cultural control practices, and rotation of insecticide classes should be established, particularly in areas where D. citri has developed resistance to malathion and chlorpyrifos. © 2017 Society of Chemical Industry
EyeSLAM: Real‐time simultaneous localization and mapping of retinal vessels during intraocular microsurgery
Authors: Braun Daniel , Yang Sungwook , Martel Joseph N. , Riviere Cameron N. , Becker Brian C. 
Published: July 2017

AbstractBackgroundFast and accurate mapping and localization of the retinal vasculature is critical to increasing the effectiveness and clinical utility of robot‐assisted intraocular microsurgery such as laser photocoagulation and retinal vessel cannulation.MethodsThe proposed EyeSLAM algorithm delivers 30 Hz real‐time simultaneous localization and mapping of the human retina and vasculature during intraocular surgery, combining fast vessel detection with 2D scan‐matching techniques to build and localize a probabilistic map of the vasculature.ResultsIn the harsh imaging environment of retinal surgery with high magnification, quick shaky motions, textureless retina background, variable lighting and tool occlusion, EyeSLAM can map 75% of the vessels within two seconds of initialization and localize the retina in real time with a root mean squared (RMS) error of under 5.0 pixels (translation) and 1° (rotation).ConclusionsEyeSLAM robustly provides retinal maps and registration that enable intelligent surgical micromanipulators to aid surgeons in simulated retinal vessel tracing and photocoagulation tasks.
Constrained extremum seeking stabilization of systems not affine in control
Authors: Scheinker Alexander , Scheinker David 
Published: July 2017

SummaryRecently, a form of extremum seeking for control (ESC) was developed for the stabilization of uncertain nonlinear systems. In ESC, the extremum seeker itself directly controls the systems through feedback rather than fine tuning a controller. The ESC results, and other related results, apply only to systems affine in control. However, in most physical systems, the control effort enters the system's dynamics through a nonlinear function, such as an input with deadzone and saturation. In this work, we use our previous results on ESC to develop constrained extremum seeking stabilizing controllers for systems of practical interest that are nonaffine in control. Considering that any odd function can be approximated arbitrarily well by an odd polynomial, we present analytic results for designing controllers for systems in which control enters the system dynamics through an odd polynomial. Furthermore, we study the robustness of the scheme to uncertainty in the odd polynomial degree as well as robustness to even‐powered perturbations.
Influence of artefacts in marine digital terrain models on habitat maps and species distribution models: a multiscale assessment
Authors: Lecours Vincent , Devillers Rodolphe , Edinger Evan N. , Brown Craig J. , Lucieer Vanessa L. 
Published: July 2017

AbstractRemote sensing techniques are currently the main methods providing elevation data used to produce Digital Terrain Models (DTM). Terrain attributes (e.g. slope, orientation, rugosity) derived from DTMs are commonly used as surrogates of species or habitat distribution in ecological studies. While DTMs’ errors are known to propagate to terrain attributes, their impact on ecological analyses is however rarely documented. This study assessed the impact of data acquisition artefacts on habitat maps and species distribution models. DTMs of German Bank (off Nova Scotia, Canada) at five different spatial scales were altered to artificially introduce different levels of common data acquisition artefacts. These data were used in 615 unsupervised classifications to map potential habitat types based on biophysical characteristics of the area, and in 615 supervised classifications (MaxEnt) to predict sea scallop distribution across the area. Differences between maps and models built from altered data and reference maps and models were assessed. Roll artefacts decreased map accuracy (up to 14% lower) and artificially increased models’ performances. Impacts from other types of artefacts were not consistent, either decreasing or increasing accuracy and performance measures. The spatial distribution of habitats and spatial predictions of sea scallop distributions were always affected by data quality (i.e. artefacts), spatial scale of the data, and the selection of variables used in the classifications. This research demonstrates the importance of these three factors in building a study design, and highlights the need for error quantification protocols that can assist when maps and models are used in decision‐making, for instance in conservation and management.
Synthesis and Electrochemical Study of New P3 Type Layered Na0.6Ni0.25Mn0.5Co0.25O2 for Sodium‐Ion Batteries
Authors: Maddukuri Satyanarayana , Valerie Pralong , Upadhyayula Varadaraju V. 
Published: July 2017

AbstractThe room temperature stable P3 type Na0.6Ni0.25Mn0.5Co0.25O2 phase was studied as an interaction material for Na ion batteries. The phase was synthesized by mixed hydroxide co‐precipitation method followed by heating at 750 °C in air. The phase purity was analyzed by means of Rietveld refinement using GSAS software. X‐ray photoelectron spectroscopy (XPS) analysis showed that Co, and Mn are in oxidation states of 3+ and 4+, respectively, and Ni is in 2+ and 3+ oxidation states. The electrochemical properties of this layered material as a cathode delivered the reversible discharge capacity of 105 and 130 mAh/g at C/10 rate in the voltage window of 1.5‐3.6 and 1.5‐4.0 V vs. Na+/Na, respectively. The good capacity retention and nearly 99 % of coloumbic efficiency was observed. The Na insertion and de‐insertion was occurred by reversible phase transitions as evidenced by ex‐situ powder X‐ray diffration. With increasing cutoff voltage to 4.4 V, the ex‐situ powder X‐ray diffration pattern indicated that the existence of P3 phase at high Na de‐insertion.
Structural Diversity in Zn(II) Coordination Polymers Constructed by Linear N,N′‐Donor Linker and Different Pseudohalides: Sorption Study and Luminescent Properties
Authors: Halder Arijit , Bhattacharya Biswajit , Sen Riti , Ghoshal Debajyoti 
Published: July 2017

AbstractReaction of a linear N,N′‐donor ligand, (4‐bpdh) with Zn(NO3)2⋅6H2O and four different pseudohalides [NCS−, NCO−, N3− and N(CN)2−]; afforded five complexes, namely {Zn(4‐bpdh)(H‐4‐bpdh)(SCN)3]}n (1), {Zn(4‐bpdh)(CNO)2]}n (2), {Zn(4‐bpdh)(N3)2]}n (3), {Zn3(4‐bpdh)3(N3)6(H2O)]⋅(4‐bpdh)0.5 (H2O)4}n (4) and {[Zn(4‐bpdh)2(N(CN)2)](N(CN)2) ⋅x(H2O)}n (5). All the complexes 1–5 were characterized by single crystal X‐ray analysis and other physicochemical methods. From X‐ray structural analysis, 1 is a discrete zero dimensional monomer, extended to a one dimensional supramolecular structure by H‐bonding and C−H⋅⋅⋅π interactions. Isostructural 2–3 are showing one dimensional chain structure. On the other hand, 4 shows a two dimensional structure linked by both bridging azide, and 4‐bpdh, whereas 5 forms a two‐fold interpenetrated α‐polonium type three‐dimensional network having two different types of channels occupied by the water molecule and free dicyanamide. The sorption study was performed for compound 2, 4 and 5 with different gases and vapors. Both 2 and 4 shows surface adsorption for the gases but evacuated framework of 5 selectively adsorbs CO2 over N2 and H2. Both 4 and 5 also exhibit interesting sorption behavior for the vapors. Solid state luminescence studies of all the complexes have also been performed at room temperature which shows ligand based emission in all the cases.
Nanotitania‐Supported Rhodium(0) Nanoparticles: Superb Catalyst in Dehydrogenation of Dimethylamine Borane
Authors: Tanyildizi Seda , Morkan İzzet , Özkar Saim 
Published: July 2017

AbstractRhodium(0) nanoparticles, in situ formed from the reduction of rhodium(II) octanoate in toluene solution, are active catalyst in dehydrogenation of dimethylamine borane, however not very stable. When the same nanoparticle formation reaction is performed in the presence of nanotitania it yields the supported rhodium(0) nanoparticles (Rh(0)/nanoTiO2) with an average size of 3.17 ± 0.52 nm, which can be isolated and characterized by a combination of analytical techniques including inductively coupled plasma optical emission spectrometry (ICP‐OES), X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X‐ray (EDX), Brunauer‐Emmett‐Teller (BET) surface area measurement. Rh(0)/nanoTiO2 is highly active and long lived catalyst providing 9700 turnovers in releasing 1 equivalent H2 from dimethylamine borane over 27 h before deactivation and a record initial turnover frequency (TOF) value of 2900 h−1 in H2 generation at 60.0 ± 0.5 °C, which is the highest TOF value ever reported for dehydrogenation of dimethylamine borane using homogeneous or heterogeneous catalyst. Rh(0)/nanoTiO2 is also quite reusable catalyst preserving 57 % of the initial catalytic activity even after the fourth run of dehydrogenation reaction. This report also includes the results of kinetic study on the catalytic dehydrogenation of dimethylamine borane depending on the temperature and catalyst concentration.
Facile Hydrothermal Synthesis of MnWO4 Nanorods for Non‐Enzymatic Glucose Sensing and Supercapacitor Properties with Insights from Density Functional Theory Simulations
Authors: Naik Kusha Kumar , Gangan Abhijeet Sadashiv , Pathak Alok , Chakraborty Brahmananda , Nayak Saroj K. , Rout Chandra Sekhar 
Published: July 2017

AbstractHere we report a facile and novel hydrothermal method to grow MnWO4 nanorods and their electrochemical glucose sensing and supercapacitor properties have been investigated. MnWO4 nanorods exhibited good glucose sensing performance with sensitivity of 13.7 μAμM−1cm−2 in the 5–110 μM linear range and specific capacitance of 199 F/g at 2 mV/s and 256.41 F/g at 0.4 A/g. First principles simulations have also been carried out to qualitatively support our experimental observations by investigating the bonding and charge transfer mechanism of glucose on MnWO4 through demonstration of Partial Density of States and charge density distributions. Large Density of States near Fermi level and empty d states around 2 eV above Fermi level of Mn d orbital qualify MnWO4 as communicating media to transfer the charge from glucose by participating in the redox reactions. Insight into the electronic structure reveals that there is charge transfer from oxygen p orbital of glucose to d orbital of Mn. Also, the quantum capacitance of MnWO4 electrodes has been presented to justify its supercapacitor performance. The maximum quantum capacitance of 762 μF/cm2 is obtained which is mostly contributed by the d electrons of Mn. Our experimental data and theoretical insight strongly infer that MnWO4 has the potential to be tailored as efficient and high‐performance glucose sensing and energy storage devices.
Highly Selective Aqueous Phase Detection of Azinphos‐Methyl Pesticide in ppb Level Using a Cage‐Connected 3D MOF
Authors: Singha Debal Kanti , Majee Prakash , Mondal Sudip Kumar , Mahata Partha 
Published: July 2017

AbstractA new metal‐organic framework (MOF) [Cd2.5(PDA)(tz)3] {PDA= 1,4‐Phenylenediacetate and tz= 1,2,4‐triazolate},1, has been synthesized by solvothermal reaction. The structure and morphology of1was systematically characterized by Powder X‐ray diffraction (PXRD), Single crystal X‐ray diffraction (SCXRD), Thermogravimetric analysis (TGA), Infrared spectroscopy (IR) and Field emission scanning electron microscopy (FESEM). Single crystal X‐ray data of1confirmed cage connected three‐dimensional structure with three different types of Cd2+ions (square pyramidal, trigonal antiprism and octahedral geometries). Photoluminescence study of1in aqueous medium showed emission at 290 nm upon excitation at 225 nm. This emissive property was used for the highly selective and sensitive detection of azinphos‐methyl pesticide in aqueous medium through luminescence quenching. Compound1is able to detect azinphos‐methyl with a detection limit of 16 ppb and its sensitivity remains unchanged in the presence of other pesticides.
Morphology Adjustable Silica Nanosheets for Immobilization of Gold Nanoparticles
Authors: Sun Jiao , Liu Xinbang , Tang Qin , Hill Jonathan P. , Ariga Katsuhiko , Ji Qingmin 
Published: July 2017

AbstractA network of silica nanosheets composed of nanosheets of several nanometers in thickness and containing pores, whose dimensions are on the hundreds‐of‐nanometers scale, exhibits morphological self‐adjustment upon binding of nanoparticles at its surface. The loading of nanoparticles in the nanosheets caused an obvious rearrangement of the silica nanosheet network probably due to the incomplete silica framework of the nanosheets. This self‐adjustment of the structure leads to a fixing of the nanoparticles at the nanosheets’ interiors. In addition, the resulting gold nanoparticle‐loaded silica nanosheets show high performance for the catalytic reduction of nitrophenols with high conversion. The networked nanosheets described here may be used as a new supporting substrate for other metal nanoparticles and could be used for various catalytic processes.
Biocompatible Fluorescent Carbon Dots for Ratiometric Intracellular pH Sensing
Authors: Chandra Anil , Singh Neetu 
Published: July 2017

AbstractWe report here carbon dots (CDs) that can be utilized for intracellular pH sensing via fluorescence emission monitoring. The carbon dots are synthesized using a simple procedure from an economical carbon source Agaricus bisporus. Along with the excitation dependent fluorescence emission, typical to carbon dots, these CDs were found to have distinct emission maxima peaks at 450 nm and 550 nm when excited by 365 nm and 500 nm respectively. Interestingly, while the fluorescence emission at 450 nm was unaffected by pH changes in solution, the fluorescence emission intensity at 550 nm increased with decrease in pH, making these CDs a potential probe for pH sensing ratiometrically. Further, the CDs were found to be biocompatible and easily internalized in HeLa cells. We also demonstrated the utility of these CDs in sensing the changes in intracellular pH.